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ntdll: Move signal handlers to the Unix library. 

Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Alexandre Julliard 2020-06-09 12:32:41 +02:00
parent fd1be205ba
commit 2333099c52
22 changed files with 3582 additions and 4153 deletions
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71
dlls/ntdll/exception.c
View File

@ -104,77 +104,6 @@ static ULONG remove_vectored_handler( struct list *handler_list, VECTORED_HANDLE
}
/**********************************************************************
* wait_suspend
*
* Wait until the thread is no longer suspended.
*/
void wait_suspend( CONTEXT *context )
{
int saved_errno = errno;
/* wait with 0 timeout, will only return once the thread is no longer suspended */
unix_funcs->server_select( NULL, 0, SELECT_INTERRUPTIBLE, 0, context, NULL, NULL );
errno = saved_errno;
}
/**********************************************************************
* send_debug_event
*
* Send an EXCEPTION_DEBUG_EVENT event to the debugger.
*/
NTSTATUS send_debug_event( EXCEPTION_RECORD *rec, int first_chance, CONTEXT *context )
{
NTSTATUS ret;
DWORD i;
obj_handle_t handle = 0;
client_ptr_t params[EXCEPTION_MAXIMUM_PARAMETERS];
CONTEXT exception_context = *context;
select_op_t select_op;
sigset_t old_set;
if (!NtCurrentTeb()->Peb->BeingDebugged) return 0; /* no debugger present */
pthread_sigmask( SIG_BLOCK, &server_block_set, &old_set );
for (i = 0; i < min( rec->NumberParameters, EXCEPTION_MAXIMUM_PARAMETERS ); i++)
params[i] = rec->ExceptionInformation[i];
SERVER_START_REQ( queue_exception_event )
{
req->first = first_chance;
req->code = rec->ExceptionCode;
req->flags = rec->ExceptionFlags;
req->record = wine_server_client_ptr( rec->ExceptionRecord );
req->address = wine_server_client_ptr( rec->ExceptionAddress );
req->len = i * sizeof(params[0]);
wine_server_add_data( req, params, req->len );
if (!(ret = wine_server_call( req ))) handle = reply->handle;
}
SERVER_END_REQ;
if (handle)
{
select_op.wait.op = SELECT_WAIT;
select_op.wait.handles[0] = handle;
unix_funcs->server_select( &select_op, offsetof( select_op_t, wait.handles[1] ), SELECT_INTERRUPTIBLE, TIMEOUT_INFINITE, &exception_context, NULL, NULL );
SERVER_START_REQ( get_exception_status )
{
req->handle = handle;
ret = wine_server_call( req );
}
SERVER_END_REQ;
if (ret >= 0) *context = exception_context;
}
pthread_sigmask( SIG_SETMASK, &old_set, NULL );
return ret;
}
/**********************************************************************
* call_vectored_handlers
*

5
dlls/ntdll/loader.c
View File

@ -3826,8 +3826,6 @@ void WINAPI LdrInitializeThunk( CONTEXT *context, void **entry, ULONG_PTR unknow
WINE_MODREF *wm;
LPCWSTR load_path = NtCurrentTeb()->Peb->ProcessParameters->DllPath.Buffer;
pthread_sigmask( SIG_UNBLOCK, &server_block_set, NULL );
if (process_detaching) return;
RtlEnterCriticalSection( &loader_section );
@ -4359,6 +4357,7 @@ void __wine_process_init(void)
static const WCHAR kernel32W[] = {'\\','?','?','\\','C',':','\\','w','i','n','d','o','w','s','\\',
's','y','s','t','e','m','3','2','\\',
'k','e','r','n','e','l','3','2','.','d','l','l',0};
void (WINAPI *kernel32_start_process)(LPTHREAD_START_ROUTINE,void*) = NULL;
RTL_USER_PROCESS_PARAMETERS *params;
WINE_MODREF *wm;
NTSTATUS status;
@ -4467,7 +4466,7 @@ void __wine_process_init(void)
teb->Tib.StackLimit = stack.StackLimit;
teb->DeallocationStack = stack.DeallocationStack;
server_init_process_done();
unix_funcs->server_init_process_done( kernel32_start_process );
}
/***********************************************************************

18
dlls/ntdll/ntdll_misc.h
View File

@ -58,8 +58,6 @@ extern NTSTATUS close_handle( HANDLE ) DECLSPEC_HIDDEN;
extern ULONG_PTR get_system_affinity_mask(void) DECLSPEC_HIDDEN;
/* exceptions */
extern void wait_suspend( CONTEXT *context ) DECLSPEC_HIDDEN;
extern NTSTATUS send_debug_event( EXCEPTION_RECORD *rec, int first_chance, CONTEXT *context ) DECLSPEC_HIDDEN;
extern LONG call_vectored_handlers( EXCEPTION_RECORD *rec, CONTEXT *context ) DECLSPEC_HIDDEN;
extern void DECLSPEC_NORETURN raise_status( NTSTATUS status, EXCEPTION_RECORD *rec ) DECLSPEC_HIDDEN;
extern NTSTATUS set_thread_context( HANDLE handle, const context_t *context, BOOL *self ) DECLSPEC_HIDDEN;
@ -75,14 +73,10 @@ extern LPCSTR debugstr_us( const UNICODE_STRING *str ) DECLSPEC_HIDDEN;
extern LPCSTR debugstr_ObjectAttributes(const OBJECT_ATTRIBUTES *oa) DECLSPEC_HIDDEN;
/* init routines */
extern SIZE_T signal_stack_size DECLSPEC_HIDDEN;
extern SIZE_T signal_stack_mask DECLSPEC_HIDDEN;
extern void signal_init_process(void) DECLSPEC_HIDDEN;
extern void version_init(void) DECLSPEC_HIDDEN;
extern void debug_init(void) DECLSPEC_HIDDEN;
extern TEB *thread_init( SIZE_T *info_size, BOOL *suspend ) DECLSPEC_HIDDEN;
extern void actctx_init(void) DECLSPEC_HIDDEN;
extern void virtual_init(void) DECLSPEC_HIDDEN;
extern void fill_cpu_info(void) DECLSPEC_HIDDEN;
extern void heap_set_debug_flags( HANDLE handle ) DECLSPEC_HIDDEN;
extern void init_unix_codepage(void) DECLSPEC_HIDDEN;
@ -102,17 +96,6 @@ extern const char *config_dir DECLSPEC_HIDDEN;
extern timeout_t server_start_time DECLSPEC_HIDDEN;
extern unsigned int server_cpus DECLSPEC_HIDDEN;
extern BOOL is_wow64 DECLSPEC_HIDDEN;
extern NTSTATUS exec_wineloader( char **argv, int socketfd, const pe_image_info_t *pe_info ) DECLSPEC_HIDDEN;
extern void server_init_process(void) DECLSPEC_HIDDEN;
extern void server_init_process_done(void) DECLSPEC_HIDDEN;
extern sigset_t server_block_set DECLSPEC_HIDDEN;
extern void server_enter_uninterrupted_section( RTL_CRITICAL_SECTION *cs, sigset_t *sigset ) DECLSPEC_HIDDEN;
extern void server_leave_uninterrupted_section( RTL_CRITICAL_SECTION *cs, sigset_t *sigset ) DECLSPEC_HIDDEN;
extern unsigned int server_select( const select_op_t *select_op, data_size_t size, UINT flags,
timeout_t abs_timeout, CONTEXT *context, RTL_CRITICAL_SECTION *cs, user_apc_t *user_apc ) DECLSPEC_HIDDEN;
extern unsigned int server_wait( const select_op_t *select_op, data_size_t size,
UINT flags, const LARGE_INTEGER *timeout ) DECLSPEC_HIDDEN;
extern unsigned int server_queue_process_apc( HANDLE process, const apc_call_t *call, apc_result_t *result ) DECLSPEC_HIDDEN;
extern NTSTATUS alloc_object_attributes( const OBJECT_ATTRIBUTES *attr, struct object_attributes **ret,
data_size_t *ret_len ) DECLSPEC_HIDDEN;
extern NTSTATUS validate_open_object_attributes( const OBJECT_ATTRIBUTES *attr ) DECLSPEC_HIDDEN;
@ -130,7 +113,6 @@ extern const WCHAR system_dir[] DECLSPEC_HIDDEN;
extern const WCHAR syswow64_dir[] DECLSPEC_HIDDEN;
extern const struct unix_funcs *unix_funcs DECLSPEC_HIDDEN;
extern void (WINAPI *kernel32_start_process)(LPTHREAD_START_ROUTINE,void*) DECLSPEC_HIDDEN;
/* Device IO */
extern NTSTATUS CDROM_DeviceIoControl(HANDLE hDevice,

153
dlls/ntdll/server.c
View File

@ -23,87 +23,18 @@
#include <assert.h>
#include <ctype.h>
#ifdef HAVE_DIRENT_H
# include <dirent.h>
#endif
#include <errno.h>
#include <fcntl.h>
#ifdef HAVE_LWP_H
#include <lwp.h>
#endif
#ifdef HAVE_PTHREAD_NP_H
# include <pthread_np.h>
#endif
#ifdef HAVE_PWD_H
# include <pwd.h>
#endif
#include <signal.h>
#include <stdarg.h>
#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#ifdef HAVE_SYS_SOCKET_H
# include <sys/socket.h>
#endif
#ifdef HAVE_SYS_WAIT_H
#include <sys/wait.h>
#endif
#ifdef HAVE_SYS_UN_H
#include <sys/un.h>
#endif
#ifdef HAVE_SYS_MMAN_H
#include <sys/mman.h>
#endif
#ifdef HAVE_SYS_PRCTL_H
# include <sys/prctl.h>
#endif
#ifdef HAVE_SYS_STAT_H
# include <sys/stat.h>
#endif
#ifdef HAVE_SYS_SYSCALL_H
# include <sys/syscall.h>
#endif
#ifdef HAVE_SYS_UIO_H
#include <sys/uio.h>
#endif
#ifdef HAVE_SYS_UCONTEXT_H
# include <sys/ucontext.h>
#endif
#ifdef HAVE_SYS_THR_H
#include <sys/thr.h>
#endif
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#ifdef __APPLE__
#include <crt_externs.h>
#include <spawn.h>
#ifndef _POSIX_SPAWN_DISABLE_ASLR
#define _POSIX_SPAWN_DISABLE_ASLR 0x0100
#endif
#endif
#include "ntstatus.h"
#define WIN32_NO_STATUS
#include "windef.h"
#include "winnt.h"
#include "wine/library.h"
#include "wine/server.h"
#include "wine/debug.h"
#include "ntdll_misc.h"
#include "ddk/wdm.h"
/* Some versions of glibc don't define this */
#ifndef SCM_RIGHTS
#define SCM_RIGHTS 1
#endif
#ifndef MSG_CMSG_CLOEXEC
#define MSG_CMSG_CLOEXEC 0
#endif
#define SOCKETNAME "socket" /* name of the socket file */
#define LOCKNAME "lock" /* name of the lock file */
const char *build_dir = NULL;
const char *data_dir = NULL;
@ -114,8 +45,6 @@ BOOL is_wow64 = FALSE;
timeout_t server_start_time = 0; /* time of server startup */
sigset_t server_block_set; /* signals to block during server calls */
/***********************************************************************
* wine_server_call (NTDLL.@)
*
@ -144,26 +73,6 @@ unsigned int CDECL wine_server_call( void *req_ptr )
}
/***********************************************************************
* server_enter_uninterrupted_section
*/
void server_enter_uninterrupted_section( RTL_CRITICAL_SECTION *cs, sigset_t *sigset )
{
pthread_sigmask( SIG_BLOCK, &server_block_set, sigset );
RtlEnterCriticalSection( cs );
}
/***********************************************************************
* server_leave_uninterrupted_section
*/
void server_leave_uninterrupted_section( RTL_CRITICAL_SECTION *cs, sigset_t *sigset )
{
RtlLeaveCriticalSection( cs );
pthread_sigmask( SIG_SETMASK, sigset, NULL );
}
/***********************************************************************
* wine_server_send_fd (NTDLL.@)
*
@ -238,65 +147,3 @@ void CDECL wine_server_release_fd( HANDLE handle, int unix_fd )
{
unix_funcs->server_release_fd( handle, unix_fd );
}
/***********************************************************************
* server_init_process
*
* Start the server and create the initial socket pair.
*/
void server_init_process(void)
{
/* setup the signal mask */
sigemptyset( &server_block_set );
sigaddset( &server_block_set, SIGALRM );
sigaddset( &server_block_set, SIGIO );
sigaddset( &server_block_set, SIGINT );
sigaddset( &server_block_set, SIGHUP );
sigaddset( &server_block_set, SIGUSR1 );
sigaddset( &server_block_set, SIGUSR2 );
sigaddset( &server_block_set, SIGCHLD );
}
/***********************************************************************
* server_init_process_done
*/
void server_init_process_done(void)
{
#ifdef __i386__
extern struct ldt_copy *__wine_ldt_copy;
#endif
PEB *peb = NtCurrentTeb()->Peb;
IMAGE_NT_HEADERS *nt = RtlImageNtHeader( peb->ImageBaseAddress );
void *entry = (char *)peb->ImageBaseAddress + nt->OptionalHeader.AddressOfEntryPoint;
NTSTATUS status;
int suspend;
unix_funcs->server_init_process_done();
/* Install signal handlers; this cannot be done earlier, since we cannot
* send exceptions to the debugger before the create process event that
* is sent by REQ_INIT_PROCESS_DONE.
* We do need the handlers in place by the time the request is over, so
* we set them up here. If we segfault between here and the server call
* something is very wrong... */
signal_init_process();
/* Signal the parent process to continue */
SERVER_START_REQ( init_process_done )
{
req->module = wine_server_client_ptr( peb->ImageBaseAddress );
#ifdef __i386__
req->ldt_copy = wine_server_client_ptr( __wine_ldt_copy );
#endif
req->entry = wine_server_client_ptr( entry );
req->gui = (nt->OptionalHeader.Subsystem != IMAGE_SUBSYSTEM_WINDOWS_CUI);
status = wine_server_call( req );
suspend = reply->suspend;
}
SERVER_END_REQ;
assert( !status );
unix_funcs->start_process( entry, suspend, kernel32_start_process );
}

587
dlls/ntdll/signal_arm.c
View File

@ -32,22 +32,6 @@
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#ifdef HAVE_SYS_PARAM_H
# include <sys/param.h>
#endif
#ifdef HAVE_SYSCALL_H
# include <syscall.h>
#else
# ifdef HAVE_SYS_SYSCALL_H
# include <sys/syscall.h>
# endif
#endif
#ifdef HAVE_SYS_SIGNAL_H
# include <sys/signal.h>
#endif
#ifdef HAVE_SYS_UCONTEXT_H
# include <sys/ucontext.h>
#endif
#define NONAMELESSUNION
#define NONAMELESSSTRUCT
@ -62,104 +46,6 @@
WINE_DEFAULT_DEBUG_CHANNEL(seh);
/***********************************************************************
* signal context platform-specific definitions
*/
#ifdef linux
#if defined(__ANDROID__) && !defined(HAVE_SYS_UCONTEXT_H)
typedef struct ucontext
{
unsigned long uc_flags;
struct ucontext *uc_link;
stack_t uc_stack;
struct sigcontext uc_mcontext;
sigset_t uc_sigmask;
unsigned long uc_regspace[128] __attribute__((__aligned__(8)));
} ucontext_t;
#endif
/* All Registers access - only for local access */
# define REG_sig(reg_name, context) ((context)->uc_mcontext.reg_name)
# define REGn_sig(reg_num, context) ((context)->uc_mcontext.arm_r##reg_num)
/* Special Registers access */
# define SP_sig(context) REG_sig(arm_sp, context) /* Stack pointer */
# define LR_sig(context) REG_sig(arm_lr, context) /* Link register */
# define PC_sig(context) REG_sig(arm_pc, context) /* Program counter */
# define CPSR_sig(context) REG_sig(arm_cpsr, context) /* Current State Register */
# define IP_sig(context) REG_sig(arm_ip, context) /* Intra-Procedure-call scratch register */
# define FP_sig(context) REG_sig(arm_fp, context) /* Frame pointer */
/* Exceptions */
# define ERROR_sig(context) REG_sig(error_code, context)
# define TRAP_sig(context) REG_sig(trap_no, context)
#elif defined(__FreeBSD__)
/* All Registers access - only for local access */
# define REGn_sig(reg_num, context) ((context)->uc_mcontext.__gregs[reg_num])
/* Special Registers access */
# define SP_sig(context) REGn_sig(_REG_SP, context) /* Stack pointer */
# define LR_sig(context) REGn_sig(_REG_LR, context) /* Link register */
# define PC_sig(context) REGn_sig(_REG_PC, context) /* Program counter */
# define CPSR_sig(context) REGn_sig(_REG_CPSR, context) /* Current State Register */
# define IP_sig(context) REGn_sig(_REG_R12, context) /* Intra-Procedure-call scratch register */
# define FP_sig(context) REGn_sig(_REG_FP, context) /* Frame pointer */
#endif /* linux */
enum arm_trap_code
{
TRAP_ARM_UNKNOWN = -1, /* Unknown fault (TRAP_sig not defined) */
TRAP_ARM_PRIVINFLT = 6, /* Invalid opcode exception */
TRAP_ARM_PAGEFLT = 14, /* Page fault */
TRAP_ARM_ALIGNFLT = 17, /* Alignment check exception */
};
typedef void (WINAPI *raise_func)( EXCEPTION_RECORD *rec, CONTEXT *context );
/***********************************************************************
* get_trap_code
*
* Get the trap code for a signal.
*/
static inline enum arm_trap_code get_trap_code( int signal, const ucontext_t *sigcontext )
{
#ifdef TRAP_sig
enum arm_trap_code trap = TRAP_sig(sigcontext);
if (trap)
return trap;
#endif
switch (signal)
{
case SIGILL:
return TRAP_ARM_PRIVINFLT;
case SIGSEGV:
return TRAP_ARM_PAGEFLT;
case SIGBUS:
return TRAP_ARM_ALIGNFLT;
default:
return TRAP_ARM_UNKNOWN;
}
}
/***********************************************************************
* get_error_code
*
* Get the error code for a signal.
*/
static inline WORD get_error_code( const ucontext_t *sigcontext )
{
#ifdef ERROR_sig
return ERROR_sig(sigcontext);
#else
return 0;
#endif
}
/*******************************************************************
* is_valid_frame
@ -171,69 +57,6 @@ static inline BOOL is_valid_frame( void *frame )
(void **)frame < (void **)NtCurrentTeb()->Tib.StackBase - 1);
}
/***********************************************************************
* save_context
*
* Set the register values from a sigcontext.
*/
static void save_context( CONTEXT *context, const ucontext_t *sigcontext )
{
#define C(x) context->R##x = REGn_sig(x,sigcontext)
/* Save normal registers */
C(0); C(1); C(2); C(3); C(4); C(5); C(6); C(7); C(8); C(9); C(10);
#undef C
context->ContextFlags = CONTEXT_FULL;
context->Sp = SP_sig(sigcontext); /* Stack pointer */
context->Lr = LR_sig(sigcontext); /* Link register */
context->Pc = PC_sig(sigcontext); /* Program Counter */
context->Cpsr = CPSR_sig(sigcontext); /* Current State Register */
context->R11 = FP_sig(sigcontext); /* Frame pointer */
context->R12 = IP_sig(sigcontext); /* Intra-Procedure-call scratch register */
}
/***********************************************************************
* restore_context
*
* Build a sigcontext from the register values.
*/
static void restore_context( const CONTEXT *context, ucontext_t *sigcontext )
{
#define C(x) REGn_sig(x,sigcontext) = context->R##x
/* Restore normal registers */
C(0); C(1); C(2); C(3); C(4); C(5); C(6); C(7); C(8); C(9); C(10);
#undef C
SP_sig(sigcontext) = context->Sp; /* Stack pointer */
LR_sig(sigcontext) = context->Lr ; /* Link register */
PC_sig(sigcontext) = context->Pc; /* Program Counter */
CPSR_sig(sigcontext) = context->Cpsr; /* Current State Register */
FP_sig(sigcontext) = context->R11; /* Frame pointer */
IP_sig(sigcontext) = context->R12; /* Intra-Procedure-call scratch register */
}
/***********************************************************************
* save_fpu
*
* Set the FPU context from a sigcontext.
*/
static inline void save_fpu( CONTEXT *context, const ucontext_t *sigcontext )
{
FIXME("not implemented\n");
}
/***********************************************************************
* restore_fpu
*
* Restore the FPU context to a sigcontext.
*/
static inline void restore_fpu( CONTEXT *context, const ucontext_t *sigcontext )
{
FIXME("not implemented\n");
}
/**************************************************************************
* __chkstk (NTDLL.@)
@ -283,81 +106,6 @@ __ASM_GLOBAL_FUNC( set_cpu_context,
"pop {pc}" )
extern void raise_func_trampoline_thumb( EXCEPTION_RECORD *rec, CONTEXT *context, raise_func func );
__ASM_GLOBAL_FUNC( raise_func_trampoline_thumb,
".thumb\n\t"
"blx r2\n\t"
"bkpt")
extern void raise_func_trampoline_arm( EXCEPTION_RECORD *rec, CONTEXT *context, raise_func func );
__ASM_GLOBAL_FUNC( raise_func_trampoline_arm,
".arm\n\t"
"blx r2\n\t"
"bkpt")
/***********************************************************************
* setup_exception_record
*
* Setup the exception record and context on the thread stack.
*/
static EXCEPTION_RECORD *setup_exception( ucontext_t *sigcontext, raise_func func )
{
struct stack_layout
{
CONTEXT context;
EXCEPTION_RECORD rec;
} *stack;
DWORD exception_code = 0;
stack = (struct stack_layout *)(SP_sig(sigcontext) & ~3);
stack--; /* push the stack_layout structure */
stack->rec.ExceptionRecord = NULL;
stack->rec.ExceptionCode = exception_code;
stack->rec.ExceptionFlags = EXCEPTION_CONTINUABLE;
stack->rec.ExceptionAddress = (LPVOID)PC_sig(sigcontext);
stack->rec.NumberParameters = 0;
save_context( &stack->context, sigcontext );
/* now modify the sigcontext to return to the raise function */
SP_sig(sigcontext) = (DWORD)stack;
if (CPSR_sig(sigcontext) & 0x20)
PC_sig(sigcontext) = (DWORD)raise_func_trampoline_thumb;
else
PC_sig(sigcontext) = (DWORD)raise_func_trampoline_arm;
REGn_sig(0, sigcontext) = (DWORD)&stack->rec; /* first arg for raise_func */
REGn_sig(1, sigcontext) = (DWORD)&stack->context; /* second arg for raise_func */
REGn_sig(2, sigcontext) = (DWORD)func; /* the raise_func as third arg for the trampoline */
return &stack->rec;
}
/**********************************************************************
* raise_segv_exception
*/
static void WINAPI raise_segv_exception( EXCEPTION_RECORD *rec, CONTEXT *context )
{
NTSTATUS status;
switch(rec->ExceptionCode)
{
case EXCEPTION_ACCESS_VIOLATION:
if (rec->NumberParameters == 2)
{
if (!(rec->ExceptionCode = unix_funcs->virtual_handle_fault( (void *)rec->ExceptionInformation[1],
rec->ExceptionInformation[0], FALSE )))
goto done;
}
break;
}
status = NtRaiseException( rec, context, TRUE );
if (status) raise_status( status, rec );
done:
set_cpu_context( context );
}
/**********************************************************************
* call_stack_handlers
*
@ -412,74 +160,6 @@ static NTSTATUS call_stack_handlers( EXCEPTION_RECORD *rec, CONTEXT *context )
}
/*******************************************************************
* raise_exception
*
* Implementation of NtRaiseException.
*/
static NTSTATUS raise_exception( EXCEPTION_RECORD *rec, CONTEXT *context, BOOL first_chance )
{
NTSTATUS status;
if (first_chance)
{
DWORD c;
TRACE( "code=%x flags=%x addr=%p pc=%08x tid=%04x\n",
rec->ExceptionCode, rec->ExceptionFlags, rec->ExceptionAddress,
context->Pc, GetCurrentThreadId() );
for (c = 0; c < rec->NumberParameters; c++)
TRACE( " info[%d]=%08lx\n", c, rec->ExceptionInformation[c] );
if (rec->ExceptionCode == EXCEPTION_WINE_STUB)
{
if (rec->ExceptionInformation[1] >> 16)
MESSAGE( "wine: Call from %p to unimplemented function %s.%s, aborting\n",
rec->ExceptionAddress,
(char*)rec->ExceptionInformation[0], (char*)rec->ExceptionInformation[1] );
else
MESSAGE( "wine: Call from %p to unimplemented function %s.%ld, aborting\n",
rec->ExceptionAddress,
(char*)rec->ExceptionInformation[0], rec->ExceptionInformation[1] );
}
else
{
TRACE( " r0=%08x r1=%08x r2=%08x r3=%08x r4=%08x r5=%08x\n",
context->R0, context->R1, context->R2, context->R3, context->R4, context->R5 );
TRACE( " r6=%08x r7=%08x r8=%08x r9=%08x r10=%08x r11=%08x\n",
context->R6, context->R7, context->R8, context->R9, context->R10, context->R11 );
TRACE( " r12=%08x sp=%08x lr=%08x pc=%08x cpsr=%08x\n",
context->R12, context->Sp, context->Lr, context->Pc, context->Cpsr );
}
status = send_debug_event( rec, TRUE, context );
if (status == DBG_CONTINUE || status == DBG_EXCEPTION_HANDLED)
return STATUS_SUCCESS;
if (call_vectored_handlers( rec, context ) == EXCEPTION_CONTINUE_EXECUTION)
return STATUS_SUCCESS;
if ((status = call_stack_handlers( rec, context )) != STATUS_UNHANDLED_EXCEPTION)
return status;
}
/* last chance exception */
status = send_debug_event( rec, FALSE, context );
if (status != DBG_CONTINUE)
{
if (rec->ExceptionFlags & EH_STACK_INVALID)
ERR("Exception frame is not in stack limits => unable to dispatch exception.\n");
else if (rec->ExceptionCode == STATUS_NONCONTINUABLE_EXCEPTION)
ERR("Process attempted to continue execution after noncontinuable exception.\n");
else
ERR("Unhandled exception code %x flags %x addr %p\n",
rec->ExceptionCode, rec->ExceptionFlags, rec->ExceptionAddress );
NtTerminateProcess( NtCurrentProcess(), rec->ExceptionCode );
}
return STATUS_SUCCESS;
}
/*******************************************************************
* KiUserExceptionDispatcher (NTDLL.@)
*/
@ -526,273 +206,6 @@ NTSTATUS WINAPI KiUserExceptionDispatcher( EXCEPTION_RECORD *rec, CONTEXT *conte
}
/**********************************************************************
* segv_handler
*
* Handler for SIGSEGV and related errors.
*/
static void segv_handler( int signal, siginfo_t *info, void *ucontext )
{
EXCEPTION_RECORD *rec;
ucontext_t *context = ucontext;
/* check for page fault inside the thread stack */
if (get_trap_code(signal, context) == TRAP_ARM_PAGEFLT)
{
switch (unix_funcs->virtual_handle_stack_fault( info->si_addr ))
{
case 1: /* handled */
return;
case -1: /* overflow */
rec = setup_exception( context, raise_segv_exception );
rec->ExceptionCode = EXCEPTION_STACK_OVERFLOW;
return;
}
}
rec = setup_exception( context, raise_segv_exception );
if (rec->ExceptionCode == EXCEPTION_STACK_OVERFLOW) return;
switch(get_trap_code(signal, context))
{
case TRAP_ARM_PRIVINFLT: /* Invalid opcode exception */
rec->ExceptionCode = EXCEPTION_ILLEGAL_INSTRUCTION;
break;
case TRAP_ARM_PAGEFLT: /* Page fault */
rec->ExceptionCode = EXCEPTION_ACCESS_VIOLATION;
rec->NumberParameters = 2;
rec->ExceptionInformation[0] = (get_error_code(context) & 0x800) != 0;
rec->ExceptionInformation[1] = (ULONG_PTR)info->si_addr;
break;
case TRAP_ARM_ALIGNFLT: /* Alignment check exception */
rec->ExceptionCode = EXCEPTION_DATATYPE_MISALIGNMENT;
break;
case TRAP_ARM_UNKNOWN: /* Unknown fault code */
rec->ExceptionCode = EXCEPTION_ACCESS_VIOLATION;
rec->NumberParameters = 2;
rec->ExceptionInformation[0] = 0;
rec->ExceptionInformation[1] = 0xffffffff;
break;
default:
ERR("Got unexpected trap %d\n", get_trap_code(signal, context));
rec->ExceptionCode = EXCEPTION_ILLEGAL_INSTRUCTION;
break;
}
}
/**********************************************************************
* trap_handler
*
* Handler for SIGTRAP.
*/
static void trap_handler( int signal, siginfo_t *info, void *ucontext )
{
EXCEPTION_RECORD rec;
CONTEXT context;
NTSTATUS status;
switch ( info->si_code )
{
case TRAP_TRACE:
rec.ExceptionCode = EXCEPTION_SINGLE_STEP;
break;
case TRAP_BRKPT:
default:
rec.ExceptionCode = EXCEPTION_BREAKPOINT;
break;
}
save_context( &context, ucontext );
rec.ExceptionFlags = EXCEPTION_CONTINUABLE;
rec.ExceptionRecord = NULL;
rec.ExceptionAddress = (LPVOID)context.Pc;
rec.NumberParameters = 0;
status = raise_exception( &rec, &context, TRUE );
if (status) raise_status( status, &rec );
restore_context( &context, ucontext );
}
/**********************************************************************
* fpe_handler
*
* Handler for SIGFPE.
*/
static void fpe_handler( int signal, siginfo_t *siginfo, void *sigcontext )
{
EXCEPTION_RECORD rec;
CONTEXT context;
NTSTATUS status;
save_fpu( &context, sigcontext );
save_context( &context, sigcontext );
switch (siginfo->si_code & 0xffff )
{
#ifdef FPE_FLTSUB
case FPE_FLTSUB:
rec.ExceptionCode = EXCEPTION_ARRAY_BOUNDS_EXCEEDED;
break;
#endif
#ifdef FPE_INTDIV
case FPE_INTDIV:
rec.ExceptionCode = EXCEPTION_INT_DIVIDE_BY_ZERO;
break;
#endif
#ifdef FPE_INTOVF
case FPE_INTOVF:
rec.ExceptionCode = EXCEPTION_INT_OVERFLOW;
break;
#endif
#ifdef FPE_FLTDIV
case FPE_FLTDIV:
rec.ExceptionCode = EXCEPTION_FLT_DIVIDE_BY_ZERO;
break;
#endif
#ifdef FPE_FLTOVF
case FPE_FLTOVF:
rec.ExceptionCode = EXCEPTION_FLT_OVERFLOW;
break;
#endif
#ifdef FPE_FLTUND
case FPE_FLTUND:
rec.ExceptionCode = EXCEPTION_FLT_UNDERFLOW;
break;
#endif
#ifdef FPE_FLTRES
case FPE_FLTRES:
rec.ExceptionCode = EXCEPTION_FLT_INEXACT_RESULT;
break;
#endif
#ifdef FPE_FLTINV
case FPE_FLTINV:
#endif
default:
rec.ExceptionCode = EXCEPTION_FLT_INVALID_OPERATION;
break;
}
rec.ExceptionFlags = EXCEPTION_CONTINUABLE;
rec.ExceptionRecord = NULL;
rec.ExceptionAddress = (LPVOID)context.Pc;
rec.NumberParameters = 0;
status = raise_exception( &rec, &context, TRUE );
if (status) raise_status( status, &rec );
restore_context( &context, sigcontext );
restore_fpu( &context, sigcontext );
}
/**********************************************************************
* int_handler
*
* Handler for SIGINT.
*/
static void int_handler( int signal, siginfo_t *siginfo, void *sigcontext )
{
EXCEPTION_RECORD rec;
CONTEXT context;
NTSTATUS status;
save_context( &context, sigcontext );
rec.ExceptionCode = CONTROL_C_EXIT;
rec.ExceptionFlags = EXCEPTION_CONTINUABLE;
rec.ExceptionRecord = NULL;
rec.ExceptionAddress = (LPVOID)context.Pc;
rec.NumberParameters = 0;
status = raise_exception( &rec, &context, TRUE );
if (status) raise_status( status, &rec );
restore_context( &context, sigcontext );
}
/**********************************************************************
* abrt_handler
*
* Handler for SIGABRT.
*/
static void abrt_handler( int signal, siginfo_t *siginfo, void *sigcontext )
{
EXCEPTION_RECORD rec;
CONTEXT context;
NTSTATUS status;
save_context( &context, sigcontext );
rec.ExceptionCode = EXCEPTION_WINE_ASSERTION;
rec.ExceptionFlags = EH_NONCONTINUABLE;
rec.ExceptionRecord = NULL;
rec.ExceptionAddress = (LPVOID)context.Pc;
rec.NumberParameters = 0;
status = raise_exception( &rec, &context, TRUE );
if (status) raise_status( status, &rec );
restore_context( &context, sigcontext );
}
/**********************************************************************
* quit_handler
*
* Handler for SIGQUIT.
*/
static void quit_handler( int signal, siginfo_t *siginfo, void *sigcontext )
{
unix_funcs->abort_thread(0);
}
/**********************************************************************
* usr1_handler
*
* Handler for SIGUSR1, used to signal a thread that it got suspended.
*/
static void usr1_handler( int signal, siginfo_t *siginfo, void *sigcontext )
{
CONTEXT context;
save_context( &context, sigcontext );
wait_suspend( &context );
restore_context( &context, sigcontext );
}
/**********************************************************************
* signal_init_process
*/
void signal_init_process(void)
{
struct sigaction sig_act;
sig_act.sa_mask = server_block_set;
sig_act.sa_flags = SA_RESTART | SA_SIGINFO;
sig_act.sa_sigaction = int_handler;
if (sigaction( SIGINT, &sig_act, NULL ) == -1) goto error;
sig_act.sa_sigaction = fpe_handler;
if (sigaction( SIGFPE, &sig_act, NULL ) == -1) goto error;
sig_act.sa_sigaction = abrt_handler;
if (sigaction( SIGABRT, &sig_act, NULL ) == -1) goto error;
sig_act.sa_sigaction = quit_handler;
if (sigaction( SIGQUIT, &sig_act, NULL ) == -1) goto error;
sig_act.sa_sigaction = usr1_handler;
if (sigaction( SIGUSR1, &sig_act, NULL ) == -1) goto error;
sig_act.sa_sigaction = segv_handler;
if (sigaction( SIGSEGV, &sig_act, NULL ) == -1) goto error;
if (sigaction( SIGILL, &sig_act, NULL ) == -1) goto error;
#ifdef SIGBUS
if (sigaction( SIGBUS, &sig_act, NULL ) == -1) goto error;
#endif
#ifdef SIGTRAP
sig_act.sa_sigaction = trap_handler;
if (sigaction( SIGTRAP, &sig_act, NULL ) == -1) goto error;
#endif
return;
error:
perror("sigaction");
exit(1);
}
/***********************************************************************
* RtlUnwind (NTDLL.@)
*/

458
dlls/ntdll/signal_arm64.c
View File

@ -88,59 +88,6 @@ struct MSVCRT_JUMP_BUFFER
double D[8];
};
/***********************************************************************
* signal context platform-specific definitions
*/
#ifdef linux
/* All Registers access - only for local access */
# define REG_sig(reg_name, context) ((context)->uc_mcontext.reg_name)
# define REGn_sig(reg_num, context) ((context)->uc_mcontext.regs[reg_num])
/* Special Registers access */
# define SP_sig(context) REG_sig(sp, context) /* Stack pointer */
# define PC_sig(context) REG_sig(pc, context) /* Program counter */
# define PSTATE_sig(context) REG_sig(pstate, context) /* Current State Register */
# define FP_sig(context) REGn_sig(29, context) /* Frame pointer */
# define LR_sig(context) REGn_sig(30, context) /* Link Register */
static struct _aarch64_ctx *get_extended_sigcontext( ucontext_t *sigcontext, unsigned int magic )
{
struct _aarch64_ctx *ctx = (struct _aarch64_ctx *)sigcontext->uc_mcontext.__reserved;
while ((char *)ctx < (char *)(&sigcontext->uc_mcontext + 1) && ctx->magic && ctx->size)
{
if (ctx->magic == magic) return ctx;
ctx = (struct _aarch64_ctx *)((char *)ctx + ctx->size);
}
return NULL;
}
static struct fpsimd_context *get_fpsimd_context( ucontext_t *sigcontext )
{
return (struct fpsimd_context *)get_extended_sigcontext( sigcontext, FPSIMD_MAGIC );
}
static DWORD64 get_fault_esr( ucontext_t *sigcontext )
{
struct esr_context *esr = (struct esr_context *)get_extended_sigcontext( sigcontext, ESR_MAGIC );
if (esr) return esr->esr;
return 0;
}
#endif /* linux */
static const size_t teb_size = 0x2000; /* we reserve two pages for the TEB */
typedef void (*raise_func)( EXCEPTION_RECORD *rec, CONTEXT *context );
/* stack layout when calling an exception raise function */
struct stack_layout
{
CONTEXT context;
EXCEPTION_RECORD rec;
void *redzone[2];
};
struct arm64_thread_data
{
void *exit_frame; /* exit frame pointer */
@ -155,15 +102,6 @@ static inline struct arm64_thread_data *arm64_thread_data(void)
return (struct arm64_thread_data *)NtCurrentTeb()->SystemReserved2;
}
/***********************************************************************
* get_signal_stack
*
* Get the base of the signal stack for the current thread.
*/
static inline void *get_signal_stack(void)
{
return (char *)NtCurrentTeb() + teb_size;
}
/*******************************************************************
* is_valid_frame
@ -175,85 +113,6 @@ static inline BOOL is_valid_frame( ULONG_PTR frame )
(void **)frame < (void **)NtCurrentTeb()->Tib.StackBase - 1);
}
/***********************************************************************
* is_inside_signal_stack
*
* Check if pointer is inside the signal stack.
*/
static inline BOOL is_inside_signal_stack( void *ptr )
{
return ((char *)ptr >= (char *)get_signal_stack() &&
(char *)ptr < (char *)get_signal_stack() + signal_stack_size);
}
/***********************************************************************
* save_context
*
* Set the register values from a sigcontext.
*/
static void save_context( CONTEXT *context, const ucontext_t *sigcontext )
{
DWORD i;
context->ContextFlags = CONTEXT_FULL;
context->u.s.Fp = FP_sig(sigcontext); /* Frame pointer */
context->u.s.Lr = LR_sig(sigcontext); /* Link register */
context->Sp = SP_sig(sigcontext); /* Stack pointer */
context->Pc = PC_sig(sigcontext); /* Program Counter */
context->Cpsr = PSTATE_sig(sigcontext); /* Current State Register */
for (i = 0; i <= 28; i++) context->u.X[i] = REGn_sig( i, sigcontext );
}
/***********************************************************************
* restore_context
*
* Build a sigcontext from the register values.
*/
static void restore_context( const CONTEXT *context, ucontext_t *sigcontext )
{
DWORD i;
FP_sig(sigcontext) = context->u.s.Fp; /* Frame pointer */
LR_sig(sigcontext) = context->u.s.Lr; /* Link register */
SP_sig(sigcontext) = context->Sp; /* Stack pointer */
PC_sig(sigcontext) = context->Pc; /* Program Counter */
PSTATE_sig(sigcontext) = context->Cpsr; /* Current State Register */
for (i = 0; i <= 28; i++) REGn_sig( i, sigcontext ) = context->u.X[i];
}
/***********************************************************************
* save_fpu
*
* Set the FPU context from a sigcontext.
*/
static void save_fpu( CONTEXT *context, ucontext_t *sigcontext )
{
struct fpsimd_context *fp = get_fpsimd_context( sigcontext );
if (!fp) return;
context->ContextFlags |= CONTEXT_FLOATING_POINT;
context->Fpcr = fp->fpcr;
context->Fpsr = fp->fpsr;
memcpy( context->V, fp->vregs, sizeof(context->V) );
}
/***********************************************************************
* restore_fpu
*
* Restore the FPU context to a sigcontext.
*/
static void restore_fpu( CONTEXT *context, ucontext_t *sigcontext )
{
struct fpsimd_context *fp = get_fpsimd_context( sigcontext );
if (!fp) return;
fp->fpcr = context->Fpcr;
fp->fpsr = context->Fpsr;
memcpy( fp->vregs, context->V, sizeof(fp->vregs) );
}
/***********************************************************************
* RtlCaptureContext (NTDLL.@)
@ -779,316 +638,6 @@ NTSTATUS WINAPI KiUserExceptionDispatcher( EXCEPTION_RECORD *rec, CONTEXT *conte
return NtRaiseException( rec, context, FALSE );
}
/***********************************************************************
* setup_exception
*
* Setup the exception record and context on the thread stack.
*/
static struct stack_layout *setup_exception( ucontext_t *sigcontext )
{
struct stack_layout *stack;
DWORD exception_code = 0;
/* push the stack_layout structure */
stack = (struct stack_layout *)((SP_sig(sigcontext) - sizeof(*stack)) & ~15);
stack->rec.ExceptionRecord = NULL;
stack->rec.ExceptionCode = exception_code;
stack->rec.ExceptionFlags = EXCEPTION_CONTINUABLE;
stack->rec.ExceptionAddress = (LPVOID)PC_sig(sigcontext);
stack->rec.NumberParameters = 0;
save_context( &stack->context, sigcontext );
save_fpu( &stack->context, sigcontext );
return stack;
}
extern void raise_func_trampoline( EXCEPTION_RECORD *rec, CONTEXT *context, raise_func func, void *sp );
__ASM_GLOBAL_FUNC( raise_func_trampoline,
__ASM_CFI(".cfi_signal_frame\n\t")
"stp x29, x30, [sp, #-0x20]!\n\t"
__ASM_CFI(".cfi_def_cfa_offset 32\n\t")
__ASM_CFI(".cfi_offset 29, -32\n\t")
__ASM_CFI(".cfi_offset 30, -24\n\t")
"mov x29, sp\n\t"
__ASM_CFI(".cfi_def_cfa_register 29\n\t")
"str x3, [sp, 0x10]\n\t"
__ASM_CFI(".cfi_remember_state\n\t")
__ASM_CFI(".cfi_escape 0x0f,0x03,0x8d,0x10,0x06\n\t") /* CFA */
__ASM_CFI(".cfi_escape 0x10,0x1d,0x02,0x8d,0x00\n\t") /* x29 */
__ASM_CFI(".cfi_escape 0x10,0x1e,0x02,0x8d,0x08\n\t") /* x30 */
"blr x2\n\t"
__ASM_CFI(".cfi_restore_state\n\t")
"brk #1")
/***********************************************************************
* setup_raise_exception
*
* Modify the signal context to call the exception raise function.
*/
static void setup_raise_exception( ucontext_t *sigcontext, struct stack_layout *stack )
{
NTSTATUS status = send_debug_event( &stack->rec, TRUE, &stack->context );
if (status == DBG_CONTINUE || status == DBG_EXCEPTION_HANDLED)
{
restore_context( &stack->context, sigcontext );
return;
}
REGn_sig(3, sigcontext) = SP_sig(sigcontext); /* original stack pointer, fourth arg for raise_func_trampoline */
SP_sig(sigcontext) = (ULONG_PTR)stack;
LR_sig(sigcontext) = PC_sig(sigcontext);
PC_sig(sigcontext) = (ULONG_PTR)raise_func_trampoline; /* raise_generic_exception; */
REGn_sig(0, sigcontext) = (ULONG_PTR)&stack->rec; /* first arg for raise_generic_exception */
REGn_sig(1, sigcontext) = (ULONG_PTR)&stack->context; /* second arg for raise_generic_exception */
REGn_sig(2, sigcontext) = (ULONG_PTR)KiUserExceptionDispatcher; /* third arg for raise_func_trampoline */
REGn_sig(18, sigcontext) = (ULONG_PTR)NtCurrentTeb();
}
/**********************************************************************
* segv_handler
*
* Handler for SIGSEGV and related errors.
*/
static void segv_handler( int signal, siginfo_t *info, void *ucontext )
{
struct stack_layout *stack;
ucontext_t *context = ucontext;
/* check for page fault inside the thread stack */
if (signal == SIGSEGV)
{
switch (unix_funcs->virtual_handle_stack_fault( info->si_addr ))
{
case 1: /* handled */
return;
case -1: /* overflow */
stack = setup_exception( context );
stack->rec.ExceptionCode = EXCEPTION_STACK_OVERFLOW;
goto done;
}
}
stack = setup_exception( context );
if (stack->rec.ExceptionCode == EXCEPTION_STACK_OVERFLOW) goto done;
switch(signal)
{
case SIGILL: /* Invalid opcode exception */
stack->rec.ExceptionCode = EXCEPTION_ILLEGAL_INSTRUCTION;
break;
case SIGSEGV: /* Segmentation fault */
stack->rec.NumberParameters = 2;
stack->rec.ExceptionInformation[0] = (get_fault_esr( context ) & 0x40) != 0;
stack->rec.ExceptionInformation[1] = (ULONG_PTR)info->si_addr;
if (!(stack->rec.ExceptionCode = unix_funcs->virtual_handle_fault( (void *)stack->rec.ExceptionInformation[1],
stack->rec.ExceptionInformation[0], FALSE )))
return;
break;
case SIGBUS: /* Alignment check exception */
stack->rec.ExceptionCode = EXCEPTION_DATATYPE_MISALIGNMENT;
break;
default:
ERR("Got unexpected signal %i\n", signal);
stack->rec.ExceptionCode = EXCEPTION_ILLEGAL_INSTRUCTION;
break;
}
done:
setup_raise_exception( context, stack );
}
/**********************************************************************
* trap_handler
*
* Handler for SIGTRAP.
*/
static void trap_handler( int signal, siginfo_t *info, void *ucontext )
{
ucontext_t *context = ucontext;
struct stack_layout *stack = setup_exception( context );
switch (info->si_code)
{
case TRAP_TRACE:
stack->rec.ExceptionCode = EXCEPTION_SINGLE_STEP;
break;
case TRAP_BRKPT:
default:
stack->rec.ExceptionCode = EXCEPTION_BREAKPOINT;
stack->context.Pc += 4;
break;
}
setup_raise_exception( context, stack );
}
/**********************************************************************
* fpe_handler
*
* Handler for SIGFPE.
*/
static void fpe_handler( int signal, siginfo_t *siginfo, void *sigcontext )
{
struct stack_layout *stack = setup_exception( sigcontext );
switch (siginfo->si_code & 0xffff )
{
#ifdef FPE_FLTSUB
case FPE_FLTSUB:
stack->rec.ExceptionCode = EXCEPTION_ARRAY_BOUNDS_EXCEEDED;
break;
#endif
#ifdef FPE_INTDIV
case FPE_INTDIV:
stack->rec.ExceptionCode = EXCEPTION_INT_DIVIDE_BY_ZERO;
break;
#endif
#ifdef FPE_INTOVF
case FPE_INTOVF:
stack->rec.ExceptionCode = EXCEPTION_INT_OVERFLOW;
break;
#endif
#ifdef FPE_FLTDIV
case FPE_FLTDIV:
stack->rec.ExceptionCode = EXCEPTION_FLT_DIVIDE_BY_ZERO;
break;
#endif
#ifdef FPE_FLTOVF
case FPE_FLTOVF:
stack->rec.ExceptionCode = EXCEPTION_FLT_OVERFLOW;
break;
#endif
#ifdef FPE_FLTUND
case FPE_FLTUND:
stack->rec.ExceptionCode = EXCEPTION_FLT_UNDERFLOW;
break;
#endif
#ifdef FPE_FLTRES
case FPE_FLTRES:
stack->rec.ExceptionCode = EXCEPTION_FLT_INEXACT_RESULT;
break;
#endif
#ifdef FPE_FLTINV
case FPE_FLTINV:
#endif
default:
stack->rec.ExceptionCode = EXCEPTION_FLT_INVALID_OPERATION;
break;
}
setup_raise_exception( sigcontext, stack );
}
/**********************************************************************
* int_handler
*
* Handler for SIGINT.
*/
static void int_handler( int signal, siginfo_t *siginfo, void *sigcontext )
{
struct stack_layout *stack = setup_exception( sigcontext );
stack->rec.ExceptionCode = CONTROL_C_EXIT;
setup_raise_exception( sigcontext, stack );
}
/**********************************************************************
* abrt_handler
*
* Handler for SIGABRT.
*/
static void abrt_handler( int signal, siginfo_t *siginfo, void *sigcontext )
{
struct stack_layout *stack = setup_exception( sigcontext );
stack->rec.ExceptionCode = EXCEPTION_WINE_ASSERTION;
stack->rec.ExceptionFlags = EH_NONCONTINUABLE;
setup_raise_exception( sigcontext, stack );
}
/**********************************************************************
* quit_handler
*
* Handler for SIGQUIT.
*/
static void quit_handler( int signal, siginfo_t *siginfo, void *sigcontext )
{
unix_funcs->abort_thread(0);
}
/**********************************************************************
* usr1_handler
*
* Handler for SIGUSR1, used to signal a thread that it got suspended.
*/
static void usr1_handler( int signal, siginfo_t *siginfo, void *sigcontext )
{
CONTEXT context;
save_context( &context, sigcontext );
wait_suspend( &context );
restore_context( &context, sigcontext );
}
/**********************************************************************
* usr2_handler
*
* Handler for SIGUSR2, used to set a thread context.
*/
static void usr2_handler( int signal, siginfo_t *siginfo, void *sigcontext )
{
CONTEXT *context = InterlockedExchangePointer( (void **)&arm64_thread_data()->context, NULL );
if (!context) return;
if ((context->ContextFlags & ~CONTEXT_ARM64) & CONTEXT_FLOATING_POINT)
restore_fpu( context, sigcontext );
restore_context( context, sigcontext );
}
/**********************************************************************
* signal_init_process
*/
void signal_init_process(void)
{
struct sigaction sig_act;
sig_act.sa_mask = server_block_set;
sig_act.sa_flags = SA_RESTART | SA_SIGINFO | SA_ONSTACK;
sig_act.sa_sigaction = int_handler;
if (sigaction( SIGINT, &sig_act, NULL ) == -1) goto error;
sig_act.sa_sigaction = fpe_handler;
if (sigaction( SIGFPE, &sig_act, NULL ) == -1) goto error;
sig_act.sa_sigaction = abrt_handler;
if (sigaction( SIGABRT, &sig_act, NULL ) == -1) goto error;
sig_act.sa_sigaction = quit_handler;
if (sigaction( SIGQUIT, &sig_act, NULL ) == -1) goto error;
sig_act.sa_sigaction = usr1_handler;
if (sigaction( SIGUSR1, &sig_act, NULL ) == -1) goto error;
sig_act.sa_sigaction = usr2_handler;
if (sigaction( SIGUSR2, &sig_act, NULL ) == -1) goto error;
sig_act.sa_sigaction = segv_handler;
if (sigaction( SIGSEGV, &sig_act, NULL ) == -1) goto error;
if (sigaction( SIGILL, &sig_act, NULL ) == -1) goto error;
#ifdef SIGBUS
if (sigaction( SIGBUS, &sig_act, NULL ) == -1) goto error;
#endif
#ifdef SIGTRAP
sig_act.sa_sigaction = trap_handler;
if (sigaction( SIGTRAP, &sig_act, NULL ) == -1) goto error;
#endif
return;
error:
perror("sigaction");
exit(1);
}
/***********************************************************************
* Definitions for Win32 unwind tables
*/
@ -1691,13 +1240,6 @@ void WINAPI RtlUnwindEx( PVOID end_frame, PVOID target_ip, EXCEPTION_RECORD *rec
unwind_done:
if (!dispatch.EstablisherFrame) break;
if (is_inside_signal_stack( (void *)dispatch.EstablisherFrame ))
{
TRACE( "frame %lx is inside signal stack (%p-%p)\n", dispatch.EstablisherFrame,
get_signal_stack(), (char *)get_signal_stack() + signal_stack_size );
*context = new_context;
continue;
}
if (!is_valid_frame( dispatch.EstablisherFrame ))
{
ERR( "invalid frame %lx (%p-%p)\n", dispatch.EstablisherFrame,

1489
dlls/ntdll/signal_i386.c
View File

File diff suppressed because it is too large Load Diff

580
dlls/ntdll/signal_powerpc.c
View File

@ -32,22 +32,6 @@
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#ifdef HAVE_SYS_PARAM_H
# include <sys/param.h>
#endif
#ifdef HAVE_SYSCALL_H
# include <syscall.h>
#else
# ifdef HAVE_SYS_SYSCALL_H
# include <sys/syscall.h>
# endif
#endif
#ifdef HAVE_SYS_SIGNAL_H
# include <sys/signal.h>
#endif
#ifdef HAVE_SYS_UCONTEXT_H
# include <sys/ucontext.h>
#endif
#include "ntstatus.h"
#define WIN32_NO_STATUS
@ -59,181 +43,6 @@
WINE_DEFAULT_DEBUG_CHANNEL(seh);
/***********************************************************************
* signal context platform-specific definitions
*/
#ifdef linux
/* All Registers access - only for local access */
# define REG_sig(reg_name, context) ((context)->uc_mcontext.regs->reg_name)
/* Gpr Registers access */
# define GPR_sig(reg_num, context) REG_sig(gpr[reg_num], context)
# define IAR_sig(context) REG_sig(nip, context) /* Program counter */
# define MSR_sig(context) REG_sig(msr, context) /* Machine State Register (Supervisor) */
# define CTR_sig(context) REG_sig(ctr, context) /* Count register */
# define XER_sig(context) REG_sig(xer, context) /* User's integer exception register */
# define LR_sig(context) REG_sig(link, context) /* Link register */
# define CR_sig(context) REG_sig(ccr, context) /* Condition register */
/* Float Registers access */
# define FLOAT_sig(reg_num, context) (((double*)((char*)((context)->uc_mcontext.regs+48*4)))[reg_num])
# define FPSCR_sig(context) (*(int*)((char*)((context)->uc_mcontext.regs+(48+32*2)*4)))
/* Exception Registers access */
# define DAR_sig(context) REG_sig(dar, context)
# define DSISR_sig(context) REG_sig(dsisr, context)
# define TRAP_sig(context) REG_sig(trap, context)
#endif /* linux */
#ifdef __APPLE__
/* All Registers access - only for local access */
# define REG_sig(reg_name, context) ((context)->uc_mcontext->ss.reg_name)
# define FLOATREG_sig(reg_name, context) ((context)->uc_mcontext->fs.reg_name)
# define EXCEPREG_sig(reg_name, context) ((context)->uc_mcontext->es.reg_name)
# define VECREG_sig(reg_name, context) ((context)->uc_mcontext->vs.reg_name)
/* Gpr Registers access */
# define GPR_sig(reg_num, context) REG_sig(r##reg_num, context)
# define IAR_sig(context) REG_sig(srr0, context) /* Program counter */
# define MSR_sig(context) REG_sig(srr1, context) /* Machine State Register (Supervisor) */
# define CTR_sig(context) REG_sig(ctr, context)
# define XER_sig(context) REG_sig(xer, context) /* Link register */
# define LR_sig(context) REG_sig(lr, context) /* User's integer exception register */
# define CR_sig(context) REG_sig(cr, context) /* Condition register */
/* Float Registers access */
# define FLOAT_sig(reg_num, context) FLOATREG_sig(fpregs[reg_num], context)
# define FPSCR_sig(context) FLOATREG_sig(fpscr, context)
/* Exception Registers access */
# define DAR_sig(context) EXCEPREG_sig(dar, context) /* Fault registers for coredump */
# define DSISR_sig(context) EXCEPREG_sig(dsisr, context)
# define TRAP_sig(context) EXCEPREG_sig(exception, context) /* number of powerpc exception taken */
/* Signal defs : Those are undefined on darwin
SIGBUS
#undef BUS_ADRERR
#undef BUS_OBJERR
SIGILL
#undef ILL_ILLOPN
#undef ILL_ILLTRP
#undef ILL_ILLADR
#undef ILL_COPROC
#undef ILL_PRVREG
#undef ILL_BADSTK
SIGTRAP
#undef TRAP_BRKPT
#undef TRAP_TRACE
SIGFPE
*/
#endif /* __APPLE__ */
/***********************************************************************
* save_context
*
* Set the register values from a sigcontext.
*/
static void save_context( CONTEXT *context, const ucontext_t *sigcontext )
{
#define C(x) context->Gpr##x = GPR_sig(x,sigcontext)
/* Save Gpr registers */
C(0); C(1); C(2); C(3); C(4); C(5); C(6); C(7); C(8); C(9); C(10);
C(11); C(12); C(13); C(14); C(15); C(16); C(17); C(18); C(19); C(20);
C(21); C(22); C(23); C(24); C(25); C(26); C(27); C(28); C(29); C(30);
C(31);
#undef C
context->Iar = IAR_sig(sigcontext); /* Program Counter */
context->Msr = MSR_sig(sigcontext); /* Machine State Register (Supervisor) */
context->Ctr = CTR_sig(sigcontext);
context->Xer = XER_sig(sigcontext);
context->Lr = LR_sig(sigcontext);
context->Cr = CR_sig(sigcontext);
/* Saving Exception regs */
context->Dar = DAR_sig(sigcontext);
context->Dsisr = DSISR_sig(sigcontext);
context->Trap = TRAP_sig(sigcontext);
}
/***********************************************************************
* restore_context
*
* Build a sigcontext from the register values.
*/
static void restore_context( const CONTEXT *context, ucontext_t *sigcontext )
{
#define C(x) GPR_sig(x,sigcontext) = context->Gpr##x
C(0); C(1); C(2); C(3); C(4); C(5); C(6); C(7); C(8); C(9); C(10);
C(11); C(12); C(13); C(14); C(15); C(16); C(17); C(18); C(19); C(20);
C(21); C(22); C(23); C(24); C(25); C(26); C(27); C(28); C(29); C(30);
C(31);
#undef C
IAR_sig(sigcontext) = context->Iar; /* Program Counter */
MSR_sig(sigcontext) = context->Msr; /* Machine State Register (Supervisor) */
CTR_sig(sigcontext) = context->Ctr;
XER_sig(sigcontext) = context->Xer;
LR_sig(sigcontext) = context->Lr;
CR_sig(sigcontext) = context->Cr;
/* Setting Exception regs */
DAR_sig(sigcontext) = context->Dar;
DSISR_sig(sigcontext) = context->Dsisr;
TRAP_sig(sigcontext) = context->Trap;
}
/***********************************************************************
* save_fpu
*
* Set the FPU context from a sigcontext.
*/
static inline void save_fpu( CONTEXT *context, const ucontext_t *sigcontext )
{
#define C(x) context->Fpr##x = FLOAT_sig(x,sigcontext)
C(0); C(1); C(2); C(3); C(4); C(5); C(6); C(7); C(8); C(9); C(10);
C(11); C(12); C(13); C(14); C(15); C(16); C(17); C(18); C(19); C(20);
C(21); C(22); C(23); C(24); C(25); C(26); C(27); C(28); C(29); C(30);
C(31);
#undef C
context->Fpscr = FPSCR_sig(sigcontext);
}
/***********************************************************************
* restore_fpu
*
* Restore the FPU context to a sigcontext.
*/
static inline void restore_fpu( CONTEXT *context, const ucontext_t *sigcontext )
{
#define C(x) FLOAT_sig(x,sigcontext) = context->Fpr##x
C(0); C(1); C(2); C(3); C(4); C(5); C(6); C(7); C(8); C(9); C(10);
C(11); C(12); C(13); C(14); C(15); C(16); C(17); C(18); C(19); C(20);
C(21); C(22); C(23); C(24); C(25); C(26); C(27); C(28); C(29); C(30);
C(31);
#undef C
FPSCR_sig(sigcontext) = context->Fpscr;
}
/***********************************************************************
* RtlCaptureContext (NTDLL.@)
@ -264,69 +73,6 @@ static NTSTATUS call_stack_handlers( EXCEPTION_RECORD *rec, CONTEXT *context )
}
/*******************************************************************
* raise_exception
*
* Implementation of NtRaiseException.
*/
static NTSTATUS raise_exception( EXCEPTION_RECORD *rec, CONTEXT *context, BOOL first_chance )
{
NTSTATUS status;
if (first_chance)
{
DWORD c;
TRACE( "code=%x flags=%x addr=%p ip=%x tid=%04x\n",
rec->ExceptionCode, rec->ExceptionFlags, rec->ExceptionAddress,
context->Iar, GetCurrentThreadId() );
for (c = 0; c < rec->NumberParameters; c++)
TRACE( " info[%d]=%08lx\n", c, rec->ExceptionInformation[c] );
if (rec->ExceptionCode == EXCEPTION_WINE_STUB)
{
if (rec->ExceptionInformation[1] >> 16)
MESSAGE( "wine: Call from %p to unimplemented function %s.%s, aborting\n",
rec->ExceptionAddress,
(char*)rec->ExceptionInformation[0], (char*)rec->ExceptionInformation[1] );
else
MESSAGE( "wine: Call from %p to unimplemented function %s.%ld, aborting\n",
rec->ExceptionAddress,
(char*)rec->ExceptionInformation[0], rec->ExceptionInformation[1] );
}
else
{
/* FIXME: dump context */
}
status = send_debug_event( rec, TRUE, context );
if (status == DBG_CONTINUE || status == DBG_EXCEPTION_HANDLED)
return STATUS_SUCCESS;
if (call_vectored_handlers( rec, context ) == EXCEPTION_CONTINUE_EXECUTION)
return STATUS_SUCCESS;
if ((status = call_stack_handlers( rec, context )) != STATUS_UNHANDLED_EXCEPTION)
return status;
}
/* last chance exception */
status = send_debug_event( rec, FALSE, context );
if (status != DBG_CONTINUE)
{
if (rec->ExceptionFlags & EH_STACK_INVALID)
ERR("Exception frame is not in stack limits => unable to dispatch exception.\n");
else if (rec->ExceptionCode == STATUS_NONCONTINUABLE_EXCEPTION)
ERR("Process attempted to continue execution after noncontinuable exception.\n");
else
ERR("Unhandled exception code %x flags %x addr %p\n",
rec->ExceptionCode, rec->ExceptionFlags, rec->ExceptionAddress );
NtTerminateProcess( NtCurrentProcess(), rec->ExceptionCode );
}
return STATUS_SUCCESS;
}
/*******************************************************************
* KiUserExceptionDispatcher (NTDLL.@)
*/
@ -368,328 +114,6 @@ NTSTATUS WINAPI KiUserExceptionDispatcher( EXCEPTION_RECORD *rec, CONTEXT *conte
}
/**********************************************************************
* segv_handler
*
* Handler for SIGSEGV and related errors.
*/
static void segv_handler( int signal, siginfo_t *siginfo, void *sigcontext )
{
EXCEPTION_RECORD rec;
CONTEXT context;
NTSTATUS status;
save_context( &context, sigcontext );
rec.ExceptionRecord = NULL;
rec.ExceptionFlags = EXCEPTION_CONTINUABLE;
rec.ExceptionAddress = (LPVOID)context.Iar;
rec.NumberParameters = 0;
switch (signal)
{
case SIGSEGV:
switch (siginfo->si_code & 0xffff)
{
case SEGV_MAPERR:
case SEGV_ACCERR:
rec.NumberParameters = 2;
rec.ExceptionInformation[0] = 0; /* FIXME ? */
rec.ExceptionInformation[1] = (ULONG_PTR)siginfo->si_addr;
if (!(rec.ExceptionCode = unix_funcs->virtual_handle_fault(siginfo->si_addr, rec.ExceptionInformation[0], FALSE)))
goto done;
break;
default:
FIXME("Unhandled SIGSEGV/%x\n",siginfo->si_code);
break;
}
break;
case SIGBUS:
switch (siginfo->si_code & 0xffff)
{
case BUS_ADRALN:
rec.ExceptionCode = EXCEPTION_DATATYPE_MISALIGNMENT;
break;
#ifdef BUS_ADRERR
case BUS_ADRERR:
#endif
#ifdef BUS_OBJERR
case BUS_OBJERR:
/* FIXME: correct for all cases ? */
rec.NumberParameters = 2;
rec.ExceptionInformation[0] = 0; /* FIXME ? */
rec.ExceptionInformation[1] = (ULONG_PTR)siginfo->si_addr;
if (!(rec.ExceptionCode = unix_funcs->virtual_handle_fault(siginfo->si_addr, rec.ExceptionInformation[0], FALSE)))
goto done;
break;
#endif
default:
FIXME("Unhandled SIGBUS/%x\n",siginfo->si_code);
break;
}
break;
case SIGILL:
switch (siginfo->si_code & 0xffff)
{
case ILL_ILLOPC: /* illegal opcode */
#ifdef ILL_ILLOPN
case ILL_ILLOPN: /* illegal operand */
#endif
#ifdef ILL_ILLADR
case ILL_ILLADR: /* illegal addressing mode */
#endif
#ifdef ILL_ILLTRP
case ILL_ILLTRP: /* illegal trap */
#endif
#ifdef ILL_COPROC
case ILL_COPROC: /* coprocessor error */
#endif
rec.ExceptionCode = EXCEPTION_ILLEGAL_INSTRUCTION;
break;
case ILL_PRVOPC: /* privileged opcode */
#ifdef ILL_PRVREG
case ILL_PRVREG: /* privileged register */
#endif
rec.ExceptionCode = EXCEPTION_PRIV_INSTRUCTION;
break;
#ifdef ILL_BADSTK
case ILL_BADSTK: /* internal stack error */
rec.ExceptionCode = EXCEPTION_STACK_OVERFLOW;
break;
#endif
default:
FIXME("Unhandled SIGILL/%x\n", siginfo->si_code);
break;
}
break;
}
status = raise_exception( &rec, &context, TRUE );
if (status) raise_status( status, &rec );
done:
restore_context( &context, sigcontext );
}
/**********************************************************************
* trap_handler
*
* Handler for SIGTRAP.
*/
static void trap_handler( int signal, siginfo_t *siginfo, void *sigcontext )
{
EXCEPTION_RECORD rec;
CONTEXT context;
NTSTATUS status;
save_context( &context, sigcontext );
rec.ExceptionFlags = EXCEPTION_CONTINUABLE;
rec.ExceptionRecord = NULL;
rec.ExceptionAddress = (LPVOID)context.Iar;
rec.NumberParameters = 0;
/* FIXME: check if we might need to modify PC */
switch (siginfo->si_code & 0xffff)
{
#ifdef TRAP_BRKPT
case TRAP_BRKPT:
rec.ExceptionCode = EXCEPTION_BREAKPOINT;
break;
#endif
#ifdef TRAP_TRACE
case TRAP_TRACE:
rec.ExceptionCode = EXCEPTION_SINGLE_STEP;
break;
#endif
default:
FIXME("Unhandled SIGTRAP/%x\n", siginfo->si_code);
break;
}
status = raise_exception( &rec, &context, TRUE );
if (status) raise_status( status, &rec );
restore_context( &context, sigcontext );
}
/**********************************************************************
* fpe_handler
*
* Handler for SIGFPE.
*/
static void fpe_handler( int signal, siginfo_t *siginfo, void *sigcontext )
{
EXCEPTION_RECORD rec;
CONTEXT context;
NTSTATUS status;
save_fpu( &context, sigcontext );
save_context( &context, sigcontext );
switch (siginfo->si_code & 0xffff )
{
#ifdef FPE_FLTSUB
case FPE_FLTSUB:
rec.ExceptionCode = EXCEPTION_ARRAY_BOUNDS_EXCEEDED;
break;
#endif
#ifdef FPE_INTDIV
case FPE_INTDIV:
rec.ExceptionCode = EXCEPTION_INT_DIVIDE_BY_ZERO;
break;
#endif
#ifdef FPE_INTOVF
case FPE_INTOVF:
rec.ExceptionCode = EXCEPTION_INT_OVERFLOW;
break;
#endif
#ifdef FPE_FLTDIV
case FPE_FLTDIV:
rec.ExceptionCode = EXCEPTION_FLT_DIVIDE_BY_ZERO;
break;
#endif
#ifdef FPE_FLTOVF
case FPE_FLTOVF:
rec.ExceptionCode = EXCEPTION_FLT_OVERFLOW;
break;
#endif
#ifdef FPE_FLTUND
case FPE_FLTUND:
rec.ExceptionCode = EXCEPTION_FLT_UNDERFLOW;
break;
#endif
#ifdef FPE_FLTRES
case FPE_FLTRES:
rec.ExceptionCode = EXCEPTION_FLT_INEXACT_RESULT;
break;
#endif
#ifdef FPE_FLTINV
case FPE_FLTINV:
#endif
default:
rec.ExceptionCode = EXCEPTION_FLT_INVALID_OPERATION;
break;
}
rec.ExceptionFlags = EXCEPTION_CONTINUABLE;
rec.ExceptionRecord = NULL;
rec.ExceptionAddress = (LPVOID)context.Iar;
rec.NumberParameters = 0;
status = raise_exception( &rec, &context, TRUE );
if (status) raise_status( status, &rec );
restore_context( &context, sigcontext );
restore_fpu( &context, sigcontext );
}
/**********************************************************************
* int_handler
*
* Handler for SIGINT.
*/
static void int_handler( int signal, siginfo_t *siginfo, void *sigcontext )
{
EXCEPTION_RECORD rec;
CONTEXT context;
NTSTATUS status;
save_context( &context, sigcontext );
rec.ExceptionCode = CONTROL_C_EXIT;
rec.ExceptionFlags = EXCEPTION_CONTINUABLE;
rec.ExceptionRecord = NULL;
rec.ExceptionAddress = (LPVOID)context.Iar;
rec.NumberParameters = 0;
status = raise_exception( &rec, &context, TRUE );
if (status) raise_status( status, &rec );
restore_context( &context, sigcontext );
}
/**********************************************************************
* abrt_handler
*
* Handler for SIGABRT.
*/
static void abrt_handler( int signal, siginfo_t *siginfo, void *sigcontext )
{
EXCEPTION_RECORD rec;
CONTEXT context;
NTSTATUS status;
save_context( &context, sigcontext );
rec.ExceptionCode = EXCEPTION_WINE_ASSERTION;
rec.ExceptionFlags = EH_NONCONTINUABLE;
rec.ExceptionRecord = NULL;
rec.ExceptionAddress = (LPVOID)context.Iar;
rec.NumberParameters = 0;
status = raise_exception( &rec, &context, TRUE );
if (status) raise_status( status, &rec );
restore_context( &context, sigcontext );
}
/**********************************************************************
* quit_handler
*
* Handler for SIGQUIT.
*/
static void quit_handler( int signal, siginfo_t *siginfo, void *sigcontext )
{
unix_funcs->abort_thread(0);
}
/**********************************************************************
* usr1_handler
*
* Handler for SIGUSR1, used to signal a thread that it got suspended.
*/
static void usr1_handler( int signal, siginfo_t *siginfo, void *sigcontext )
{
CONTEXT context;
save_context( &context, sigcontext );
wait_suspend( &context );
restore_context( &context, sigcontext );
}
/**********************************************************************
* signal_init_process
*/
void signal_init_process(void)
{
struct sigaction sig_act;
sig_act.sa_mask = server_block_set;
sig_act.sa_flags = SA_RESTART | SA_SIGINFO;
sig_act.sa_sigaction = int_handler;
if (sigaction( SIGINT, &sig_act, NULL ) == -1) goto error;
sig_act.sa_sigaction = fpe_handler;
if (sigaction( SIGFPE, &sig_act, NULL ) == -1) goto error;
sig_act.sa_sigaction = abrt_handler;
if (sigaction( SIGABRT, &sig_act, NULL ) == -1) goto error;
sig_act.sa_sigaction = quit_handler;
if (sigaction( SIGQUIT, &sig_act, NULL ) == -1) goto error;
sig_act.sa_sigaction = usr1_handler;
if (sigaction( SIGUSR1, &sig_act, NULL ) == -1) goto error;
sig_act.sa_sigaction = segv_handler;
if (sigaction( SIGSEGV, &sig_act, NULL ) == -1) goto error;
if (sigaction( SIGILL, &sig_act, NULL ) == -1) goto error;
#ifdef SIGBUS
if (sigaction( SIGBUS, &sig_act, NULL ) == -1) goto error;
#endif
#ifdef SIGTRAP
sig_act.sa_sigaction = trap_handler;
if (sigaction( SIGTRAP, &sig_act, NULL ) == -1) goto error;
#endif
return;
error:
perror("sigaction");
exit(1);
}
/***********************************************************************
* RtlUnwind (NTDLL.@)
*/
@ -704,12 +128,10 @@ void WINAPI RtlUnwind( PVOID pEndFrame, PVOID targetIp, PEXCEPTION_RECORD pRecor
void WINAPI RtlRaiseException( EXCEPTION_RECORD *rec )
{
CONTEXT context;
NTSTATUS status;
RtlCaptureContext( &context );
rec->ExceptionAddress = (void *)context.Iar;
status = raise_exception( rec, &context, TRUE );
if (status) raise_status( status, rec );
RtlRaiseStatus( NtRaiseException( rec, &context, TRUE ));
}
/*************************************************************************

718
dlls/ntdll/signal_x86_64.c
View File

@ -252,46 +252,6 @@ struct MSVCRT_JUMP_BUFFER
#error You must define the signal context functions for your platform
#endif
enum i386_trap_code
{
TRAP_x86_UNKNOWN = -1, /* Unknown fault (TRAP_sig not defined) */
TRAP_x86_DIVIDE = 0, /* Division by zero exception */
TRAP_x86_TRCTRAP = 1, /* Single-step exception */
TRAP_x86_NMI = 2, /* NMI interrupt */
TRAP_x86_BPTFLT = 3, /* Breakpoint exception */
TRAP_x86_OFLOW = 4, /* Overflow exception */
TRAP_x86_BOUND = 5, /* Bound range exception */
TRAP_x86_PRIVINFLT = 6, /* Invalid opcode exception */
TRAP_x86_DNA = 7, /* Device not available exception */
TRAP_x86_DOUBLEFLT = 8, /* Double fault exception */
TRAP_x86_FPOPFLT = 9, /* Coprocessor segment overrun */
TRAP_x86_TSSFLT = 10, /* Invalid TSS exception */
TRAP_x86_SEGNPFLT = 11, /* Segment not present exception */
TRAP_x86_STKFLT = 12, /* Stack fault */
TRAP_x86_PROTFLT = 13, /* General protection fault */
TRAP_x86_PAGEFLT = 14, /* Page fault */
TRAP_x86_ARITHTRAP = 16, /* Floating point exception */
TRAP_x86_ALIGNFLT = 17, /* Alignment check exception */
TRAP_x86_MCHK = 18, /* Machine check exception */
TRAP_x86_CACHEFLT = 19 /* Cache flush exception */
};
static const size_t teb_size = 0x2000; /* we reserve two pages for the TEB */
typedef void (*raise_func)( EXCEPTION_RECORD *rec, CONTEXT *context );
/* stack layout when calling an exception raise function */
struct stack_layout
{
CONTEXT context;
EXCEPTION_RECORD rec;
ULONG64 rsi;
ULONG64 rdi;
ULONG64 rbp;
ULONG64 rip;
ULONG64 red_zone[16];
};
struct amd64_thread_data
{
DWORD_PTR dr0; /* debug registers */
@ -311,40 +271,6 @@ static inline struct amd64_thread_data *amd64_thread_data(void)
return (struct amd64_thread_data *)NtCurrentTeb()->SystemReserved2;
}
static inline void set_sigcontext( const CONTEXT *context, ucontext_t *sigcontext )
{
RAX_sig(sigcontext) = context->Rax;
RCX_sig(sigcontext) = context->Rcx;
RDX_sig(sigcontext) = context->Rdx;
RBX_sig(sigcontext) = context->Rbx;
RSP_sig(sigcontext) = context->Rsp;
RBP_sig(sigcontext) = context->Rbp;
RSI_sig(sigcontext) = context->Rsi;
RDI_sig(sigcontext) = context->Rdi;
R8_sig(sigcontext) = context->R8;
R9_sig(sigcontext) = context->R9;
R10_sig(sigcontext) = context->R10;
R11_sig(sigcontext) = context->R11;
R12_sig(sigcontext) = context->R12;
R13_sig(sigcontext) = context->R13;
R14_sig(sigcontext) = context->R14;
R15_sig(sigcontext) = context->R15;
RIP_sig(sigcontext) = context->Rip;
CS_sig(sigcontext) = context->SegCs;
FS_sig(sigcontext) = context->SegFs;
GS_sig(sigcontext) = context->SegGs;
EFL_sig(sigcontext) = context->EFlags;
#ifdef DS_sig
DS_sig(sigcontext) = context->SegDs;
#endif
#ifdef ES_sig
ES_sig(sigcontext) = context->SegEs;
#endif
#ifdef SS_sig
SS_sig(sigcontext) = context->SegSs;
#endif
}
/***********************************************************************
* Definitions for Win32 unwind tables
@ -1489,7 +1415,27 @@ static NTSTATUS libunwind_virtual_unwind( ULONG64 ip, BOOL* got_info, ULONG64 *f
unw_set_reg( &cursor, UNW_X86_64_R15, context->R15 );
}
#else
set_sigcontext( context, &unw_context );
RAX_sig(&unw_context) = context->Rax;
RCX_sig(&unw_context) = context->Rcx;
RDX_sig(&unw_context) = context->Rdx;
RBX_sig(&unw_context) = context->Rbx;
RSP_sig(&unw_context) = context->Rsp;
RBP_sig(&unw_context) = context->Rbp;
RSI_sig(&unw_context) = context->Rsi;
RDI_sig(&unw_context) = context->Rdi;
R8_sig(&unw_context) = context->R8;
R9_sig(&unw_context) = context->R9;
R10_sig(&unw_context) = context->R10;
R11_sig(&unw_context) = context->R11;
R12_sig(&unw_context) = context->R12;
R13_sig(&unw_context) = context->R13;
R14_sig(&unw_context) = context->R14;
R15_sig(&unw_context) = context->R15;
RIP_sig(&unw_context) = context->Rip;
CS_sig(&unw_context) = context->SegCs;
FS_sig(&unw_context) = context->SegFs;
GS_sig(&unw_context) = context->SegGs;
EFL_sig(&unw_context) = context->EFlags;
rc = unw_init_local( &cursor, &unw_context );
#endif
if (rc != UNW_ESUCCESS)
@ -1630,103 +1576,6 @@ static NTSTATUS virtual_unwind( ULONG type, DISPATCHER_CONTEXT *dispatch, CONTEX
return STATUS_SUCCESS;
}
/***********************************************************************
* get_signal_stack
*
* Get the base of the signal stack for the current thread.
*/
static inline void *get_signal_stack(void)
{
return (char *)NtCurrentTeb() + teb_size;
}
/***********************************************************************
* is_inside_signal_stack
*
* Check if pointer is inside the signal stack.
*/
static inline BOOL is_inside_signal_stack( void *ptr )
{
return ((char *)ptr >= (char *)get_signal_stack() &&
(char *)ptr < (char *)get_signal_stack() + signal_stack_size);
}
/***********************************************************************
* save_context
*
* Set the register values from a sigcontext.
*/
static void save_context( CONTEXT *context, const ucontext_t *sigcontext )
{
context->ContextFlags = CONTEXT_CONTROL | CONTEXT_INTEGER | CONTEXT_SEGMENTS | CONTEXT_DEBUG_REGISTERS;
context->Rax = RAX_sig(sigcontext);
context->Rcx = RCX_sig(sigcontext);
context->Rdx = RDX_sig(sigcontext);
context->Rbx = RBX_sig(sigcontext);
context->Rsp = RSP_sig(sigcontext);
context->Rbp = RBP_sig(sigcontext);
context->Rsi = RSI_sig(sigcontext);
context->Rdi = RDI_sig(sigcontext);
context->R8 = R8_sig(sigcontext);
context->R9 = R9_sig(sigcontext);
context->R10 = R10_sig(sigcontext);
context->R11 = R11_sig(sigcontext);
context->R12 = R12_sig(sigcontext);
context->R13 = R13_sig(sigcontext);
context->R14 = R14_sig(sigcontext);
context->R15 = R15_sig(sigcontext);
context->Rip = RIP_sig(sigcontext);
context->SegCs = CS_sig(sigcontext);
context->SegFs = FS_sig(sigcontext);
context->SegGs = GS_sig(sigcontext);
context->EFlags = EFL_sig(sigcontext);
#ifdef DS_sig
context->SegDs = DS_sig(sigcontext);
#else
__asm__("movw %%ds,%0" : "=m" (context->SegDs));
#endif
#ifdef ES_sig
context->SegEs = ES_sig(sigcontext);
#else
__asm__("movw %%es,%0" : "=m" (context->SegEs));
#endif
#ifdef SS_sig
context->SegSs = SS_sig(sigcontext);
#else
__asm__("movw %%ss,%0" : "=m" (context->SegSs));
#endif
context->Dr0 = amd64_thread_data()->dr0;
context->Dr1 = amd64_thread_data()->dr1;
context->Dr2 = amd64_thread_data()->dr2;
context->Dr3 = amd64_thread_data()->dr3;
context->Dr6 = amd64_thread_data()->dr6;
context->Dr7 = amd64_thread_data()->dr7;
if (FPU_sig(sigcontext))
{
context->ContextFlags |= CONTEXT_FLOATING_POINT;
context->u.FltSave = *FPU_sig(sigcontext);
context->MxCsr = context->u.FltSave.MxCsr;
}
}
/***********************************************************************
* restore_context
*
* Build a sigcontext from the register values.
*/
static void restore_context( const CONTEXT *context, ucontext_t *sigcontext )
{
amd64_thread_data()->dr0 = context->Dr0;
amd64_thread_data()->dr1 = context->Dr1;
amd64_thread_data()->dr2 = context->Dr2;
amd64_thread_data()->dr3 = context->Dr3;
amd64_thread_data()->dr6 = context->Dr6;
amd64_thread_data()->dr7 = context->Dr7;
set_sigcontext( context, sigcontext );
if (FPU_sig(sigcontext)) *FPU_sig(sigcontext) = context->u.FltSave;
}
/**************************************************************************
* __chkstk (NTDLL.@)
@ -2261,523 +2110,6 @@ NTSTATUS WINAPI KiUserExceptionDispatcher( EXCEPTION_RECORD *rec, CONTEXT *conte
}
extern void CDECL raise_func_trampoline( EXCEPTION_RECORD *rec, CONTEXT *context, raise_func func );
__ASM_GLOBAL_FUNC( raise_func_trampoline,
__ASM_CFI(".cfi_signal_frame\n\t")
__ASM_CFI(".cfi_def_cfa %rbp,160\n\t") /* red zone + rip + rbp + rdi + rsi */
__ASM_CFI(".cfi_rel_offset %rip,24\n\t")
__ASM_CFI(".cfi_rel_offset %rbp,16\n\t")
__ASM_CFI(".cfi_rel_offset %rdi,8\n\t")
__ASM_CFI(".cfi_rel_offset %rsi,0\n\t")
"call *%r8\n\t"
"int $3")
/***********************************************************************
* setup_exception
*
* Setup a proper stack frame for the raise function, and modify the
* sigcontext so that the return from the signal handler will call
* the raise function.
*/
static struct stack_layout *setup_exception( ucontext_t *sigcontext )
{
struct stack_layout *stack;
DWORD exception_code = 0;
stack = (struct stack_layout *)(RSP_sig(sigcontext) & ~15);
/* stack sanity checks */
if (is_inside_signal_stack( stack ))
{
ERR( "nested exception on signal stack in thread %04x eip %016lx esp %016lx stack %p-%p\n",
GetCurrentThreadId(), (ULONG_PTR)RIP_sig(sigcontext), (ULONG_PTR)RSP_sig(sigcontext),
NtCurrentTeb()->Tib.StackLimit, NtCurrentTeb()->Tib.StackBase );
unix_funcs->abort_thread(1);
}
if (stack - 1 > stack || /* check for overflow in subtraction */
(char *)stack <= (char *)NtCurrentTeb()->DeallocationStack ||
(char *)stack > (char *)NtCurrentTeb()->Tib.StackBase)
{
WARN( "exception outside of stack limits in thread %04x eip %016lx esp %016lx stack %p-%p\n",
GetCurrentThreadId(), (ULONG_PTR)RIP_sig(sigcontext), (ULONG_PTR)RSP_sig(sigcontext),
NtCurrentTeb()->Tib.StackLimit, NtCurrentTeb()->Tib.StackBase );
}
else if ((char *)(stack - 1) < (char *)NtCurrentTeb()->DeallocationStack + 4096)
{
/* stack overflow on last page, unrecoverable */
UINT diff = (char *)NtCurrentTeb()->DeallocationStack + 4096 - (char *)(stack - 1);
ERR( "stack overflow %u bytes in thread %04x eip %016lx esp %016lx stack %p-%p-%p\n",
diff, GetCurrentThreadId(), (ULONG_PTR)RIP_sig(sigcontext),
(ULONG_PTR)RSP_sig(sigcontext), NtCurrentTeb()->DeallocationStack,
NtCurrentTeb()->Tib.StackLimit, NtCurrentTeb()->Tib.StackBase );
unix_funcs->abort_thread(1);
}
else if ((char *)(stack - 1) < (char *)NtCurrentTeb()->Tib.StackLimit)
{
/* stack access below stack limit, may be recoverable */
switch (unix_funcs->virtual_handle_stack_fault( stack - 1 ))
{
case 0: /* not handled */
{
UINT diff = (char *)NtCurrentTeb()->Tib.StackLimit - (char *)(stack - 1);
ERR( "stack overflow %u bytes in thread %04x eip %016lx esp %016lx stack %p-%p-%p\n",
diff, GetCurrentThreadId(), (ULONG_PTR)RIP_sig(sigcontext),
(ULONG_PTR)RSP_sig(sigcontext), NtCurrentTeb()->DeallocationStack,
NtCurrentTeb()->Tib.StackLimit, NtCurrentTeb()->Tib.StackBase );
unix_funcs->abort_thread(1);
}
case -1: /* overflow */
exception_code = EXCEPTION_STACK_OVERFLOW;
break;
}
}
stack--; /* push the stack_layout structure */
#if defined(VALGRIND_MAKE_MEM_UNDEFINED)
VALGRIND_MAKE_MEM_UNDEFINED(stack, sizeof(*stack));
#elif defined(VALGRIND_MAKE_WRITABLE)
VALGRIND_MAKE_WRITABLE(stack, sizeof(*stack));
#endif
stack->rec.ExceptionRecord = NULL;
stack->rec.ExceptionCode = exception_code;
stack->rec.ExceptionFlags = EXCEPTION_CONTINUABLE;
stack->rec.ExceptionAddress = (void *)RIP_sig(sigcontext);
stack->rec.NumberParameters = 0;
save_context( &stack->context, sigcontext );
return stack;
}
static void setup_raise_exception( ucontext_t *sigcontext, struct stack_layout *stack )
{
ULONG64 *rsp_ptr;
NTSTATUS status;
if (stack->rec.ExceptionCode == EXCEPTION_SINGLE_STEP)
{
/* when single stepping can't tell whether this is a hw bp or a
* single step interrupt. try to avoid as much overhead as possible
* and only do a server call if there is any hw bp enabled. */
if (!(stack->context.EFlags & 0x100) || (stack->context.Dr7 & 0xff))
{
/* (possible) hardware breakpoint, fetch the debug registers */
DWORD saved_flags = stack->context.ContextFlags;
stack->context.ContextFlags = CONTEXT_DEBUG_REGISTERS;
NtGetContextThread(GetCurrentThread(), &stack->context);
stack->context.ContextFlags |= saved_flags; /* restore flags */
}
stack->context.EFlags &= ~0x100; /* clear single-step flag */
}
status = send_debug_event( &stack->rec, TRUE, &stack->context );
if (status == DBG_CONTINUE || status == DBG_EXCEPTION_HANDLED)
{
restore_context( &stack->context, sigcontext );
return;
}
/* store return address and %rbp without aligning, so that the offset is fixed */
rsp_ptr = (ULONG64 *)RSP_sig(sigcontext) - 16;
*(--rsp_ptr) = stack->context.Rip;
*(--rsp_ptr) = stack->context.Rbp;
*(--rsp_ptr) = stack->context.Rdi;
*(--rsp_ptr) = stack->context.Rsi;
/* now modify the sigcontext to return to the raise function */
RIP_sig(sigcontext) = (ULONG_PTR)raise_func_trampoline;
RCX_sig(sigcontext) = (ULONG_PTR)&stack->rec;
RDX_sig(sigcontext) = (ULONG_PTR)&stack->context;
R8_sig(sigcontext) = (ULONG_PTR)KiUserExceptionDispatcher;
RBP_sig(sigcontext) = (ULONG_PTR)rsp_ptr;
RSP_sig(sigcontext) = (ULONG_PTR)stack;
/* clear single-step, direction, and align check flag */
EFL_sig(sigcontext) &= ~(0x100|0x400|0x40000);
}
/***********************************************************************
* is_privileged_instr
*
* Check if the fault location is a privileged instruction.
*/
static inline DWORD is_privileged_instr( CONTEXT *context )
{
BYTE instr[16];
unsigned int i, prefix_count = 0;
unsigned int len = unix_funcs->virtual_uninterrupted_read_memory( (BYTE *)context->Rip, instr, sizeof(instr) );
for (i = 0; i < len; i++) switch (instr[i])
{
/* instruction prefixes */
case 0x2e: /* %cs: */
case 0x36: /* %ss: */
case 0x3e: /* %ds: */
case 0x26: /* %es: */
case 0x40: /* rex */
case 0x41: /* rex */
case 0x42: /* rex */
case 0x43: /* rex */
case 0x44: /* rex */
case 0x45: /* rex */
case 0x46: /* rex */
case 0x47: /* rex */
case 0x48: /* rex */
case 0x49: /* rex */
case 0x4a: /* rex */
case 0x4b: /* rex */
case 0x4c: /* rex */
case 0x4d: /* rex */
case 0x4e: /* rex */
case 0x4f: /* rex */
case 0x64: /* %fs: */
case 0x65: /* %gs: */
case 0x66: /* opcode size */
case 0x67: /* addr size */
case 0xf0: /* lock */
case 0xf2: /* repne */
case 0xf3: /* repe */
if (++prefix_count >= 15) return EXCEPTION_ILLEGAL_INSTRUCTION;
continue;
case 0x0f: /* extended instruction */
if (i == len - 1) return 0;
switch (instr[i + 1])
{
case 0x06: /* clts */
case 0x08: /* invd */
case 0x09: /* wbinvd */
case 0x20: /* mov crX, reg */
case 0x21: /* mov drX, reg */
case 0x22: /* mov reg, crX */
case 0x23: /* mov reg drX */
return EXCEPTION_PRIV_INSTRUCTION;
}
return 0;
case 0x6c: /* insb (%dx) */
case 0x6d: /* insl (%dx) */
case 0x6e: /* outsb (%dx) */
case 0x6f: /* outsl (%dx) */
case 0xcd: /* int $xx */
case 0xe4: /* inb al,XX */
case 0xe5: /* in (e)ax,XX */
case 0xe6: /* outb XX,al */
case 0xe7: /* out XX,(e)ax */
case 0xec: /* inb (%dx),%al */
case 0xed: /* inl (%dx),%eax */
case 0xee: /* outb %al,(%dx) */
case 0xef: /* outl %eax,(%dx) */
case 0xf4: /* hlt */
case 0xfa: /* cli */
case 0xfb: /* sti */
return EXCEPTION_PRIV_INSTRUCTION;
default:
return 0;
}
return 0;
}
/***********************************************************************
* handle_interrupt
*
* Handle an interrupt.
*/
static inline BOOL handle_interrupt( ucontext_t *sigcontext, struct stack_layout *stack )
{
switch (ERROR_sig(sigcontext) >> 3)
{
case 0x2c:
stack->rec.ExceptionCode = STATUS_ASSERTION_FAILURE;
break;
case 0x2d:
switch (stack->context.Rax)
{
case 1: /* BREAKPOINT_PRINT */
case 3: /* BREAKPOINT_LOAD_SYMBOLS */
case 4: /* BREAKPOINT_UNLOAD_SYMBOLS */
case 5: /* BREAKPOINT_COMMAND_STRING (>= Win2003) */
RIP_sig(sigcontext) += 3;
return TRUE;
}
stack->context.Rip += 3;
stack->rec.ExceptionCode = EXCEPTION_BREAKPOINT;
stack->rec.ExceptionAddress = (void *)stack->context.Rip;
stack->rec.NumberParameters = 1;
stack->rec.ExceptionInformation[0] = stack->context.Rax;
break;
default:
return FALSE;
}
setup_raise_exception( sigcontext, stack );
return TRUE;
}
/**********************************************************************
* segv_handler
*
* Handler for SIGSEGV and related errors.
*/
static void segv_handler( int signal, siginfo_t *siginfo, void *sigcontext )
{
struct stack_layout *stack;
ucontext_t *ucontext = sigcontext;
stack = (struct stack_layout *)(RSP_sig(ucontext) & ~15);
/* check for exceptions on the signal stack caused by write watches */
if (TRAP_sig(ucontext) == TRAP_x86_PAGEFLT && is_inside_signal_stack( stack ) &&
!unix_funcs->virtual_handle_fault( siginfo->si_addr, (ERROR_sig(ucontext) >> 1) & 0x09, TRUE ))
{
return;
}
/* check for page fault inside the thread stack */
if (TRAP_sig(ucontext) == TRAP_x86_PAGEFLT)
{
switch (unix_funcs->virtual_handle_stack_fault( siginfo->si_addr ))
{
case 1: /* handled */
return;
case -1: /* overflow */
stack = setup_exception( sigcontext );
stack->rec.ExceptionCode = EXCEPTION_STACK_OVERFLOW;
goto done;
}
}
stack = setup_exception( sigcontext );
if (stack->rec.ExceptionCode == EXCEPTION_STACK_OVERFLOW) goto done;
switch(TRAP_sig(ucontext))
{
case TRAP_x86_OFLOW: /* Overflow exception */
stack->rec.ExceptionCode = EXCEPTION_INT_OVERFLOW;
break;
case TRAP_x86_BOUND: /* Bound range exception */
stack->rec.ExceptionCode = EXCEPTION_ARRAY_BOUNDS_EXCEEDED;
break;
case TRAP_x86_PRIVINFLT: /* Invalid opcode exception */
stack->rec.ExceptionCode = EXCEPTION_ILLEGAL_INSTRUCTION;
break;
case TRAP_x86_STKFLT: /* Stack fault */
stack->rec.ExceptionCode = EXCEPTION_STACK_OVERFLOW;
break;
case TRAP_x86_SEGNPFLT: /* Segment not present exception */
case TRAP_x86_PROTFLT: /* General protection fault */
case TRAP_x86_UNKNOWN: /* Unknown fault code */
{
WORD err = ERROR_sig(ucontext);
if (!err && (stack->rec.ExceptionCode = is_privileged_instr( &stack->context ))) break;
if ((err & 7) == 2 && handle_interrupt( ucontext, stack )) return;
stack->rec.ExceptionCode = EXCEPTION_ACCESS_VIOLATION;
stack->rec.NumberParameters = 2;
stack->rec.ExceptionInformation[0] = 0;
stack->rec.ExceptionInformation[1] = 0xffffffffffffffff;
}
break;
case TRAP_x86_PAGEFLT: /* Page fault */
stack->rec.NumberParameters = 2;
stack->rec.ExceptionInformation[0] = (ERROR_sig(ucontext) >> 1) & 0x09;
stack->rec.ExceptionInformation[1] = (ULONG_PTR)siginfo->si_addr;
if (!(stack->rec.ExceptionCode = unix_funcs->virtual_handle_fault((void *)stack->rec.ExceptionInformation[1],
stack->rec.ExceptionInformation[0], FALSE )))
return;
break;
case TRAP_x86_ALIGNFLT: /* Alignment check exception */
stack->rec.ExceptionCode = EXCEPTION_DATATYPE_MISALIGNMENT;
break;
default:
ERR( "Got unexpected trap %ld\n", (ULONG_PTR)TRAP_sig(ucontext) );
/* fall through */
case TRAP_x86_NMI: /* NMI interrupt */
case TRAP_x86_DNA: /* Device not available exception */
case TRAP_x86_DOUBLEFLT: /* Double fault exception */
case TRAP_x86_TSSFLT: /* Invalid TSS exception */
case TRAP_x86_MCHK: /* Machine check exception */
case TRAP_x86_CACHEFLT: /* Cache flush exception */
stack->rec.ExceptionCode = EXCEPTION_ILLEGAL_INSTRUCTION;
break;
}
done:
setup_raise_exception( sigcontext, stack );
}
/**********************************************************************
* trap_handler
*
* Handler for SIGTRAP.
*/
static void trap_handler( int signal, siginfo_t *siginfo, void *sigcontext )
{
struct stack_layout *stack = setup_exception( sigcontext );
switch (siginfo->si_code)
{
case TRAP_TRACE: /* Single-step exception */
case 4 /* TRAP_HWBKPT */: /* Hardware breakpoint exception */
stack->rec.ExceptionCode = EXCEPTION_SINGLE_STEP;
break;
case TRAP_BRKPT: /* Breakpoint exception */
#ifdef SI_KERNEL
case SI_KERNEL:
#endif
/* Check if this is actually icebp instruction */
if (((unsigned char *)stack->rec.ExceptionAddress)[-1] == 0xF1)
{
stack->rec.ExceptionCode = EXCEPTION_SINGLE_STEP;
break;
}
stack->rec.ExceptionAddress = (char *)stack->rec.ExceptionAddress - 1; /* back up over the int3 instruction */
/* fall through */
default:
stack->rec.ExceptionCode = EXCEPTION_BREAKPOINT;
stack->rec.NumberParameters = 1;
stack->rec.ExceptionInformation[0] = 0;
break;
}
setup_raise_exception( sigcontext, stack );
}
/**********************************************************************
* fpe_handler
*
* Handler for SIGFPE.
*/
static void fpe_handler( int signal, siginfo_t *siginfo, void *sigcontext )
{
struct stack_layout *stack = setup_exception( sigcontext );
switch (siginfo->si_code)
{
case FPE_FLTSUB:
stack->rec.ExceptionCode = EXCEPTION_ARRAY_BOUNDS_EXCEEDED;
break;
case FPE_INTDIV:
stack->rec.ExceptionCode = EXCEPTION_INT_DIVIDE_BY_ZERO;
break;
case FPE_INTOVF:
stack->rec.ExceptionCode = EXCEPTION_INT_OVERFLOW;
break;
case FPE_FLTDIV:
stack->rec.ExceptionCode = EXCEPTION_FLT_DIVIDE_BY_ZERO;
break;
case FPE_FLTOVF:
stack->rec.ExceptionCode = EXCEPTION_FLT_OVERFLOW;
break;
case FPE_FLTUND:
stack->rec.ExceptionCode = EXCEPTION_FLT_UNDERFLOW;
break;
case FPE_FLTRES:
stack->rec.ExceptionCode = EXCEPTION_FLT_INEXACT_RESULT;
break;
case FPE_FLTINV:
default:
stack->rec.ExceptionCode = EXCEPTION_FLT_INVALID_OPERATION;
break;
}
setup_raise_exception( sigcontext, stack );
}
/**********************************************************************
* int_handler
*
* Handler for SIGINT.
*/
static void int_handler( int signal, siginfo_t *siginfo, void *sigcontext )
{
struct stack_layout *stack = setup_exception( sigcontext );
stack->rec.ExceptionCode = CONTROL_C_EXIT;
setup_raise_exception( sigcontext, stack );
}
/**********************************************************************
* abrt_handler
*
* Handler for SIGABRT.
*/
static void abrt_handler( int signal, siginfo_t *siginfo, void *sigcontext )
{
struct stack_layout *stack = setup_exception( sigcontext );
stack->rec.ExceptionCode = EXCEPTION_WINE_ASSERTION;
stack->rec.ExceptionFlags = EH_NONCONTINUABLE;
setup_raise_exception( sigcontext, stack );
}
/**********************************************************************
* quit_handler
*
* Handler for SIGQUIT.
*/
static void quit_handler( int signal, siginfo_t *siginfo, void *ucontext )
{
unix_funcs->abort_thread(0);
}
/**********************************************************************
* usr1_handler
*
* Handler for SIGUSR1, used to signal a thread that it got suspended.
*/
static void usr1_handler( int signal, siginfo_t *siginfo, void *ucontext )
{
CONTEXT context;
save_context( &context, ucontext );
wait_suspend( &context );
restore_context( &context, ucontext );
}
/**********************************************************************
* signal_init_process
*/
void signal_init_process(void)
{
struct sigaction sig_act;
sig_act.sa_mask = server_block_set;
sig_act.sa_flags = SA_RESTART | SA_SIGINFO | SA_ONSTACK;
sig_act.sa_sigaction = int_handler;
if (sigaction( SIGINT, &sig_act, NULL ) == -1) goto error;
sig_act.sa_sigaction = fpe_handler;
if (sigaction( SIGFPE, &sig_act, NULL ) == -1) goto error;
sig_act.sa_sigaction = abrt_handler;
if (sigaction( SIGABRT, &sig_act, NULL ) == -1) goto error;
sig_act.sa_sigaction = quit_handler;
if (sigaction( SIGQUIT, &sig_act, NULL ) == -1) goto error;
sig_act.sa_sigaction = usr1_handler;
if (sigaction( SIGUSR1, &sig_act, NULL ) == -1) goto error;
sig_act.sa_sigaction = segv_handler;
if (sigaction( SIGSEGV, &sig_act, NULL ) == -1) goto error;
if (sigaction( SIGILL, &sig_act, NULL ) == -1) goto error;
#ifdef SIGBUS
if (sigaction( SIGBUS, &sig_act, NULL ) == -1) goto error;
#endif
#ifdef SIGTRAP
sig_act.sa_sigaction = trap_handler;
if (sigaction( SIGTRAP, &sig_act, NULL ) == -1) goto error;
#endif
return;
error:
perror("sigaction");
exit(1);
}
static ULONG64 get_int_reg( CONTEXT *context, int reg )
{
return *(&context->Rax + reg);
@ -3325,14 +2657,6 @@ void WINAPI RtlUnwindEx( PVOID end_frame, PVOID target_ip, EXCEPTION_RECORD *rec
unwind_done:
if (!dispatch.EstablisherFrame) break;
if (is_inside_signal_stack( (void *)dispatch.EstablisherFrame ))
{
TRACE( "frame %lx is inside signal stack (%p-%p)\n", dispatch.EstablisherFrame,
get_signal_stack(), (char *)get_signal_stack() + signal_stack_size );
*context = new_context;
continue;
}
if ((dispatch.EstablisherFrame & 7) ||
dispatch.EstablisherFrame < (ULONG64)NtCurrentTeb()->Tib.StackLimit ||
dispatch.EstablisherFrame > (ULONG64)NtCurrentTeb()->Tib.StackBase)

12
dlls/ntdll/thread.c
View File

@ -39,7 +39,6 @@
#include "ntstatus.h"
#define WIN32_NO_STATUS
#include "winternl.h"
#include "wine/library.h"
#include "wine/server.h"
#include "wine/debug.h"
#include "ntdll_misc.h"
@ -51,8 +50,6 @@ WINE_DECLARE_DEBUG_CHANNEL(relay);
struct _KUSER_SHARED_DATA *user_shared_data = (void *)0x7ffe0000;
void (WINAPI *kernel32_start_process)(LPTHREAD_START_ROUTINE,void*) = NULL;
static PEB *peb;
static PEB_LDR_DATA ldr;
static RTL_BITMAP tls_bitmap;
@ -183,12 +180,8 @@ int __cdecl __wine_dbg_output( const char *str )
*/
TEB *thread_init( SIZE_T *info_size, BOOL *suspend )
{
TEB *teb;
virtual_init();
teb = unix_funcs->init_threading( &nb_threads, &__wine_ldt_copy, info_size, suspend, &server_cpus,
&is_wow64, &server_start_time );
TEB *teb = unix_funcs->init_threading( &nb_threads, &__wine_ldt_copy, info_size, suspend, &server_cpus,
&is_wow64, &server_start_time );
peb = teb->Peb;
peb->FastPebLock = &peb_lock;
@ -222,7 +215,6 @@ TEB *thread_init( SIZE_T *info_size, BOOL *suspend )
unix_funcs->get_paths( &build_dir, &data_dir, &config_dir );
fill_cpu_info();
server_init_process();
return teb;
}

6
dlls/ntdll/unix/loader.c
View File

@ -1052,22 +1052,16 @@ static struct unix_funcs unix_funcs =
virtual_get_system_info,
virtual_create_builtin_view,
virtual_alloc_thread_stack,
virtual_handle_fault,
virtual_locked_server_call,
virtual_locked_read,
virtual_locked_pread,
virtual_locked_recvmsg,
virtual_is_valid_code_address,
virtual_handle_stack_fault,
virtual_check_buffer_for_read,
virtual_check_buffer_for_write,
virtual_uninterrupted_read_memory,
virtual_uninterrupted_write_memory,
virtual_set_force_exec,
virtual_release_address_space,
virtual_set_large_address_space,
init_threading,
start_process,
abort_thread,
exit_thread,
exit_process,

33
dlls/ntdll/unix/server.c
View File

@ -1473,11 +1473,42 @@ void server_init_process(void)
/***********************************************************************
* server_init_process_done
*/
void CDECL server_init_process_done(void)
void CDECL server_init_process_done( void *relay )
{
#ifdef __i386__
extern struct ldt_copy __wine_ldt_copy;
#endif
PEB *peb = NtCurrentTeb()->Peb;
IMAGE_NT_HEADERS *nt = RtlImageNtHeader( peb->ImageBaseAddress );
void *entry = (char *)peb->ImageBaseAddress + nt->OptionalHeader.AddressOfEntryPoint;
NTSTATUS status;
int suspend;
#ifdef __APPLE__
send_server_task_port();
#endif
/* Install signal handlers; this cannot be done earlier, since we cannot
* send exceptions to the debugger before the create process event that
* is sent by init_process_done */
signal_init_process();
/* Signal the parent process to continue */
SERVER_START_REQ( init_process_done )
{
req->module = wine_server_client_ptr( peb->ImageBaseAddress );
#ifdef __i386__
req->ldt_copy = wine_server_client_ptr( &__wine_ldt_copy );
#endif
req->entry = wine_server_client_ptr( entry );
req->gui = (nt->OptionalHeader.Subsystem != IMAGE_SUBSYSTEM_WINDOWS_CUI);
status = wine_server_call( req );
suspend = reply->suspend;
}
SERVER_END_REQ;
assert( !status );
signal_start_thread( entry, peb, suspend, relay, NtCurrentTeb() );
}

508
dlls/ntdll/unix/signal_arm.c
View File

@ -66,9 +66,177 @@
#include "unix_private.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(seh);
static pthread_key_t teb_key;
/***********************************************************************
* signal context platform-specific definitions
*/
#ifdef linux
#if defined(__ANDROID__) && !defined(HAVE_SYS_UCONTEXT_H)
typedef struct ucontext
{
unsigned long uc_flags;
struct ucontext *uc_link;
stack_t uc_stack;
struct sigcontext uc_mcontext;
sigset_t uc_sigmask;
unsigned long uc_regspace[128] __attribute__((__aligned__(8)));
} ucontext_t;
#endif
/* All Registers access - only for local access */
# define REG_sig(reg_name, context) ((context)->uc_mcontext.reg_name)
# define REGn_sig(reg_num, context) ((context)->uc_mcontext.arm_r##reg_num)
/* Special Registers access */
# define SP_sig(context) REG_sig(arm_sp, context) /* Stack pointer */
# define LR_sig(context) REG_sig(arm_lr, context) /* Link register */
# define PC_sig(context) REG_sig(arm_pc, context) /* Program counter */
# define CPSR_sig(context) REG_sig(arm_cpsr, context) /* Current State Register */
# define IP_sig(context) REG_sig(arm_ip, context) /* Intra-Procedure-call scratch register */
# define FP_sig(context) REG_sig(arm_fp, context) /* Frame pointer */
/* Exceptions */
# define ERROR_sig(context) REG_sig(error_code, context)
# define TRAP_sig(context) REG_sig(trap_no, context)
#elif defined(__FreeBSD__)
/* All Registers access - only for local access */
# define REGn_sig(reg_num, context) ((context)->uc_mcontext.__gregs[reg_num])
/* Special Registers access */
# define SP_sig(context) REGn_sig(_REG_SP, context) /* Stack pointer */
# define LR_sig(context) REGn_sig(_REG_LR, context) /* Link register */
# define PC_sig(context) REGn_sig(_REG_PC, context) /* Program counter */
# define CPSR_sig(context) REGn_sig(_REG_CPSR, context) /* Current State Register */
# define IP_sig(context) REGn_sig(_REG_R12, context) /* Intra-Procedure-call scratch register */
# define FP_sig(context) REGn_sig(_REG_FP, context) /* Frame pointer */
#endif /* linux */
enum arm_trap_code
{
TRAP_ARM_UNKNOWN = -1, /* Unknown fault (TRAP_sig not defined) */
TRAP_ARM_PRIVINFLT = 6, /* Invalid opcode exception */
TRAP_ARM_PAGEFLT = 14, /* Page fault */
TRAP_ARM_ALIGNFLT = 17, /* Alignment check exception */
};
typedef void (WINAPI *raise_func)( EXCEPTION_RECORD *rec, CONTEXT *context );
/***********************************************************************
* get_trap_code
*
* Get the trap code for a signal.
*/
static inline enum arm_trap_code get_trap_code( int signal, const ucontext_t *sigcontext )
{
#ifdef TRAP_sig
enum arm_trap_code trap = TRAP_sig(sigcontext);
if (trap)
return trap;
#endif
switch (signal)
{
case SIGILL:
return TRAP_ARM_PRIVINFLT;
case SIGSEGV:
return TRAP_ARM_PAGEFLT;
case SIGBUS:
return TRAP_ARM_ALIGNFLT;
default:
return TRAP_ARM_UNKNOWN;
}
}
/***********************************************************************
* get_error_code
*
* Get the error code for a signal.
*/
static inline WORD get_error_code( const ucontext_t *sigcontext )
{
#ifdef ERROR_sig
return ERROR_sig(sigcontext);
#else
return 0;
#endif
}
/***********************************************************************
* save_context
*
* Set the register values from a sigcontext.
*/
static void save_context( CONTEXT *context, const ucontext_t *sigcontext )
{
#define C(x) context->R##x = REGn_sig(x,sigcontext)
/* Save normal registers */
C(0); C(1); C(2); C(3); C(4); C(5); C(6); C(7); C(8); C(9); C(10);
#undef C
context->ContextFlags = CONTEXT_FULL;
context->Sp = SP_sig(sigcontext); /* Stack pointer */
context->Lr = LR_sig(sigcontext); /* Link register */
context->Pc = PC_sig(sigcontext); /* Program Counter */
context->Cpsr = CPSR_sig(sigcontext); /* Current State Register */
context->R11 = FP_sig(sigcontext); /* Frame pointer */
context->R12 = IP_sig(sigcontext); /* Intra-Procedure-call scratch register */
}
/***********************************************************************
* restore_context
*
* Build a sigcontext from the register values.
*/
static void restore_context( const CONTEXT *context, ucontext_t *sigcontext )
{
#define C(x) REGn_sig(x,sigcontext) = context->R##x
/* Restore normal registers */
C(0); C(1); C(2); C(3); C(4); C(5); C(6); C(7); C(8); C(9); C(10);
#undef C
SP_sig(sigcontext) = context->Sp; /* Stack pointer */
LR_sig(sigcontext) = context->Lr ; /* Link register */
PC_sig(sigcontext) = context->Pc; /* Program Counter */
CPSR_sig(sigcontext) = context->Cpsr; /* Current State Register */
FP_sig(sigcontext) = context->R11; /* Frame pointer */
IP_sig(sigcontext) = context->R12; /* Intra-Procedure-call scratch register */
}
/***********************************************************************
* save_fpu
*
* Set the FPU context from a sigcontext.
*/
static inline void save_fpu( CONTEXT *context, const ucontext_t *sigcontext )
{
FIXME("not implemented\n");
}
/***********************************************************************
* restore_fpu
*
* Restore the FPU context to a sigcontext.
*/
static inline void restore_fpu( CONTEXT *context, const ucontext_t *sigcontext )
{
FIXME("not implemented\n");
}
/***********************************************************************
* set_cpu_context
*
@ -305,6 +473,311 @@ NTSTATUS WINAPI NtGetContextThread( HANDLE handle, CONTEXT *context )
}
extern void raise_func_trampoline_thumb( EXCEPTION_RECORD *rec, CONTEXT *context, raise_func func );
__ASM_GLOBAL_FUNC( raise_func_trampoline_thumb,
".thumb\n\t"
"blx r2\n\t"
"bkpt")
extern void raise_func_trampoline_arm( EXCEPTION_RECORD *rec, CONTEXT *context, raise_func func );
__ASM_GLOBAL_FUNC( raise_func_trampoline_arm,
".arm\n\t"
"blx r2\n\t"
"bkpt")
/***********************************************************************
* setup_exception_record
*
* Setup the exception record and context on the thread stack.
*/
static EXCEPTION_RECORD *setup_exception( ucontext_t *sigcontext, raise_func func )
{
struct stack_layout
{
CONTEXT context;
EXCEPTION_RECORD rec;
} *stack;
DWORD exception_code = 0;
stack = (struct stack_layout *)(SP_sig(sigcontext) & ~3);
stack--; /* push the stack_layout structure */
stack->rec.ExceptionRecord = NULL;
stack->rec.ExceptionCode = exception_code;
stack->rec.ExceptionFlags = EXCEPTION_CONTINUABLE;
stack->rec.ExceptionAddress = (LPVOID)PC_sig(sigcontext);
stack->rec.NumberParameters = 0;
save_context( &stack->context, sigcontext );
/* now modify the sigcontext to return to the raise function */
SP_sig(sigcontext) = (DWORD)stack;
if (CPSR_sig(sigcontext) & 0x20)
PC_sig(sigcontext) = (DWORD)raise_func_trampoline_thumb;
else
PC_sig(sigcontext) = (DWORD)raise_func_trampoline_arm;
REGn_sig(0, sigcontext) = (DWORD)&stack->rec; /* first arg for raise_func */
REGn_sig(1, sigcontext) = (DWORD)&stack->context; /* second arg for raise_func */
REGn_sig(2, sigcontext) = (DWORD)func; /* the raise_func as third arg for the trampoline */
return &stack->rec;
}
/**********************************************************************
* raise_segv_exception
*/
static void WINAPI raise_segv_exception( EXCEPTION_RECORD *rec, CONTEXT *context )
{
NTSTATUS status;
switch(rec->ExceptionCode)
{
case EXCEPTION_ACCESS_VIOLATION:
if (rec->NumberParameters == 2)
{
if (!(rec->ExceptionCode = virtual_handle_fault( (void *)rec->ExceptionInformation[1],
rec->ExceptionInformation[0], FALSE )))
goto done;
}
break;
}
status = NtRaiseException( rec, context, TRUE );
if (status) RtlRaiseStatus( status );
done:
set_cpu_context( context );
}
/**********************************************************************
* segv_handler
*
* Handler for SIGSEGV and related errors.
*/
static void segv_handler( int signal, siginfo_t *info, void *ucontext )
{
EXCEPTION_RECORD *rec;
ucontext_t *context = ucontext;
/* check for page fault inside the thread stack */
if (get_trap_code(signal, context) == TRAP_ARM_PAGEFLT)
{
switch (virtual_handle_stack_fault( info->si_addr ))
{
case 1: /* handled */
return;
case -1: /* overflow */
rec = setup_exception( context, raise_segv_exception );
rec->ExceptionCode = EXCEPTION_STACK_OVERFLOW;
return;
}
}
rec = setup_exception( context, raise_segv_exception );
if (rec->ExceptionCode == EXCEPTION_STACK_OVERFLOW) return;
switch(get_trap_code(signal, context))
{
case TRAP_ARM_PRIVINFLT: /* Invalid opcode exception */
rec->ExceptionCode = EXCEPTION_ILLEGAL_INSTRUCTION;
break;
case TRAP_ARM_PAGEFLT: /* Page fault */
rec->ExceptionCode = EXCEPTION_ACCESS_VIOLATION;
rec->NumberParameters = 2;
rec->ExceptionInformation[0] = (get_error_code(context) & 0x800) != 0;
rec->ExceptionInformation[1] = (ULONG_PTR)info->si_addr;
break;
case TRAP_ARM_ALIGNFLT: /* Alignment check exception */
rec->ExceptionCode = EXCEPTION_DATATYPE_MISALIGNMENT;
break;
case TRAP_ARM_UNKNOWN: /* Unknown fault code */
rec->ExceptionCode = EXCEPTION_ACCESS_VIOLATION;
rec->NumberParameters = 2;
rec->ExceptionInformation[0] = 0;
rec->ExceptionInformation[1] = 0xffffffff;
break;
default:
ERR("Got unexpected trap %d\n", get_trap_code(signal, context));
rec->ExceptionCode = EXCEPTION_ILLEGAL_INSTRUCTION;
break;
}
}
/**********************************************************************
* trap_handler
*
* Handler for SIGTRAP.
*/
static void trap_handler( int signal, siginfo_t *info, void *ucontext )
{
EXCEPTION_RECORD rec;
CONTEXT context;
NTSTATUS status;
switch ( info->si_code )
{
case TRAP_TRACE:
rec.ExceptionCode = EXCEPTION_SINGLE_STEP;
break;
case TRAP_BRKPT:
default:
rec.ExceptionCode = EXCEPTION_BREAKPOINT;
break;
}
save_context( &context, ucontext );
rec.ExceptionFlags = EXCEPTION_CONTINUABLE;
rec.ExceptionRecord = NULL;
rec.ExceptionAddress = (LPVOID)context.Pc;
rec.NumberParameters = 0;
status = NtRaiseException( &rec, &context, TRUE );
if (status) RtlRaiseStatus( status );
restore_context( &context, ucontext );
}
/**********************************************************************
* fpe_handler
*
* Handler for SIGFPE.
*/
static void fpe_handler( int signal, siginfo_t *siginfo, void *sigcontext )
{
EXCEPTION_RECORD rec;
CONTEXT context;
NTSTATUS status;
save_fpu( &context, sigcontext );
save_context( &context, sigcontext );
switch (siginfo->si_code & 0xffff )
{
#ifdef FPE_FLTSUB
case FPE_FLTSUB:
rec.ExceptionCode = EXCEPTION_ARRAY_BOUNDS_EXCEEDED;
break;
#endif
#ifdef FPE_INTDIV
case FPE_INTDIV:
rec.ExceptionCode = EXCEPTION_INT_DIVIDE_BY_ZERO;
break;
#endif
#ifdef FPE_INTOVF
case FPE_INTOVF:
rec.ExceptionCode = EXCEPTION_INT_OVERFLOW;
break;
#endif
#ifdef FPE_FLTDIV
case FPE_FLTDIV:
rec.ExceptionCode = EXCEPTION_FLT_DIVIDE_BY_ZERO;
break;
#endif
#ifdef FPE_FLTOVF
case FPE_FLTOVF:
rec.ExceptionCode = EXCEPTION_FLT_OVERFLOW;
break;
#endif
#ifdef FPE_FLTUND
case FPE_FLTUND:
rec.ExceptionCode = EXCEPTION_FLT_UNDERFLOW;
break;
#endif
#ifdef FPE_FLTRES
case FPE_FLTRES:
rec.ExceptionCode = EXCEPTION_FLT_INEXACT_RESULT;
break;
#endif
#ifdef FPE_FLTINV
case FPE_FLTINV:
#endif
default:
rec.ExceptionCode = EXCEPTION_FLT_INVALID_OPERATION;
break;
}
rec.ExceptionFlags = EXCEPTION_CONTINUABLE;
rec.ExceptionRecord = NULL;
rec.ExceptionAddress = (LPVOID)context.Pc;
rec.NumberParameters = 0;
status = NtRaiseException( &rec, &context, TRUE );
if (status) RtlRaiseStatus( status );
restore_context( &context, sigcontext );
restore_fpu( &context, sigcontext );
}
/**********************************************************************
* int_handler
*
* Handler for SIGINT.
*/
static void int_handler( int signal, siginfo_t *siginfo, void *sigcontext )
{
EXCEPTION_RECORD rec;
CONTEXT context;
NTSTATUS status;
save_context( &context, sigcontext );
rec.ExceptionCode = CONTROL_C_EXIT;
rec.ExceptionFlags = EXCEPTION_CONTINUABLE;
rec.ExceptionRecord = NULL;
rec.ExceptionAddress = (LPVOID)context.Pc;
rec.NumberParameters = 0;
status = NtRaiseException( &rec, &context, TRUE );
if (status) RtlRaiseStatus( status );
restore_context( &context, sigcontext );
}
/**********************************************************************
* abrt_handler
*
* Handler for SIGABRT.
*/
static void abrt_handler( int signal, siginfo_t *siginfo, void *sigcontext )
{
EXCEPTION_RECORD rec;
CONTEXT context;
NTSTATUS status;
save_context( &context, sigcontext );
rec.ExceptionCode = EXCEPTION_WINE_ASSERTION;
rec.ExceptionFlags = EH_NONCONTINUABLE;
rec.ExceptionRecord = NULL;
rec.ExceptionAddress = (LPVOID)context.Pc;
rec.NumberParameters = 0;
status = NtRaiseException( &rec, &context, TRUE );
if (status) RtlRaiseStatus( status );
restore_context( &context, sigcontext );
}
/**********************************************************************
* quit_handler
*
* Handler for SIGQUIT.
*/
static void quit_handler( int signal, siginfo_t *siginfo, void *sigcontext )
{
abort_thread(0);
}
/**********************************************************************
* usr1_handler
*
* Handler for SIGUSR1, used to signal a thread that it got suspended.
*/
static void usr1_handler( int signal, siginfo_t *siginfo, void *sigcontext )
{
CONTEXT context;
save_context( &context, sigcontext );
wait_suspend( &context );
restore_context( &context, sigcontext );
}
/**********************************************************************
* get_thread_ldt_entry
*/
@ -363,6 +836,40 @@ void signal_init_thread( TEB *teb )
}
/**********************************************************************
* signal_init_process
*/
void signal_init_process(void)
{
struct sigaction sig_act;
sig_act.sa_mask = server_block_set;
sig_act.sa_flags = SA_RESTART | SA_SIGINFO;
sig_act.sa_sigaction = int_handler;
if (sigaction( SIGINT, &sig_act, NULL ) == -1) goto error;
sig_act.sa_sigaction = fpe_handler;
if (sigaction( SIGFPE, &sig_act, NULL ) == -1) goto error;
sig_act.sa_sigaction = abrt_handler;
if (sigaction( SIGABRT, &sig_act, NULL ) == -1) goto error;
sig_act.sa_sigaction = quit_handler;
if (sigaction( SIGQUIT, &sig_act, NULL ) == -1) goto error;
sig_act.sa_sigaction = usr1_handler;
if (sigaction( SIGUSR1, &sig_act, NULL ) == -1) goto error;
sig_act.sa_sigaction = trap_handler;
if (sigaction( SIGTRAP, &sig_act, NULL ) == -1) goto error;
sig_act.sa_sigaction = segv_handler;
if (sigaction( SIGSEGV, &sig_act, NULL ) == -1) goto error;
if (sigaction( SIGILL, &sig_act, NULL ) == -1) goto error;
if (sigaction( SIGBUS, &sig_act, NULL ) == -1) goto error;
return;
error:
perror("sigaction");
exit(1);
}
/***********************************************************************
* init_thread_context
*/
@ -397,6 +904,7 @@ PCONTEXT DECLSPEC_HIDDEN attach_thread( LPTHREAD_START_ROUTINE entry, void *arg,
ctx = (CONTEXT *)NtCurrentTeb()->Tib.StackBase - 1;
init_thread_context( ctx, entry, arg, relay );
}
pthread_sigmask( SIG_UNBLOCK, &server_block_set, NULL );
ctx->ContextFlags = CONTEXT_FULL;
LdrInitializeThunk( ctx, (void **)&ctx->R0, 0, 0 );
return ctx;

431
dlls/ntdll/unix/signal_arm64.c
View File

@ -69,10 +69,63 @@
#include "unix_private.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(seh);
/***********************************************************************
* signal context platform-specific definitions
*/
#ifdef linux
/* All Registers access - only for local access */
# define REG_sig(reg_name, context) ((context)->uc_mcontext.reg_name)
# define REGn_sig(reg_num, context) ((context)->uc_mcontext.regs[reg_num])
/* Special Registers access */
# define SP_sig(context) REG_sig(sp, context) /* Stack pointer */
# define PC_sig(context) REG_sig(pc, context) /* Program counter */
# define PSTATE_sig(context) REG_sig(pstate, context) /* Current State Register */
# define FP_sig(context) REGn_sig(29, context) /* Frame pointer */
# define LR_sig(context) REGn_sig(30, context) /* Link Register */
static struct _aarch64_ctx *get_extended_sigcontext( ucontext_t *sigcontext, unsigned int magic )
{
struct _aarch64_ctx *ctx = (struct _aarch64_ctx *)sigcontext->uc_mcontext.__reserved;
while ((char *)ctx < (char *)(&sigcontext->uc_mcontext + 1) && ctx->magic && ctx->size)
{
if (ctx->magic == magic) return ctx;
ctx = (struct _aarch64_ctx *)((char *)ctx + ctx->size);
}
return NULL;
}
static struct fpsimd_context *get_fpsimd_context( ucontext_t *sigcontext )
{
return (struct fpsimd_context *)get_extended_sigcontext( sigcontext, FPSIMD_MAGIC );
}
static DWORD64 get_fault_esr( ucontext_t *sigcontext )
{
struct esr_context *esr = (struct esr_context *)get_extended_sigcontext( sigcontext, ESR_MAGIC );
if (esr) return esr->esr;
return 0;
}
#endif /* linux */
static pthread_key_t teb_key;
static const size_t teb_size = 0x2000; /* we reserve two pages for the TEB */
typedef void (*raise_func)( EXCEPTION_RECORD *rec, CONTEXT *context );
/* stack layout when calling an exception raise function */
struct stack_layout
{
CONTEXT context;
EXCEPTION_RECORD rec;
void *redzone[2];
};
struct arm64_thread_data
{
void *exit_frame; /* exit frame pointer */
@ -88,6 +141,76 @@ static inline struct arm64_thread_data *arm64_thread_data(void)
}
/***********************************************************************
* save_context
*
* Set the register values from a sigcontext.
*/
static void save_context( CONTEXT *context, const ucontext_t *sigcontext )
{
DWORD i;
context->ContextFlags = CONTEXT_FULL;
context->u.s.Fp = FP_sig(sigcontext); /* Frame pointer */
context->u.s.Lr = LR_sig(sigcontext); /* Link register */
context->Sp = SP_sig(sigcontext); /* Stack pointer */
context->Pc = PC_sig(sigcontext); /* Program Counter */
context->Cpsr = PSTATE_sig(sigcontext); /* Current State Register */
for (i = 0; i <= 28; i++) context->u.X[i] = REGn_sig( i, sigcontext );
}
/***********************************************************************
* restore_context
*
* Build a sigcontext from the register values.
*/
static void restore_context( const CONTEXT *context, ucontext_t *sigcontext )
{
DWORD i;
FP_sig(sigcontext) = context->u.s.Fp; /* Frame pointer */
LR_sig(sigcontext) = context->u.s.Lr; /* Link register */
SP_sig(sigcontext) = context->Sp; /* Stack pointer */
PC_sig(sigcontext) = context->Pc; /* Program Counter */
PSTATE_sig(sigcontext) = context->Cpsr; /* Current State Register */
for (i = 0; i <= 28; i++) REGn_sig( i, sigcontext ) = context->u.X[i];
}
/***********************************************************************
* save_fpu
*
* Set the FPU context from a sigcontext.
*/
static void save_fpu( CONTEXT *context, ucontext_t *sigcontext )
{
struct fpsimd_context *fp = get_fpsimd_context( sigcontext );
if (!fp) return;
context->ContextFlags |= CONTEXT_FLOATING_POINT;
context->Fpcr = fp->fpcr;
context->Fpsr = fp->fpsr;
memcpy( context->V, fp->vregs, sizeof(context->V) );
}
/***********************************************************************
* restore_fpu
*
* Restore the FPU context to a sigcontext.
*/
static void restore_fpu( CONTEXT *context, ucontext_t *sigcontext )
{
struct fpsimd_context *fp = get_fpsimd_context( sigcontext );
if (!fp) return;
fp->fpcr = context->Fpcr;
fp->fpsr = context->Fpsr;
memcpy( fp->vregs, context->V, sizeof(fp->vregs) );
}
/***********************************************************************
* get_server_context_flags
*
@ -297,6 +420,278 @@ NTSTATUS WINAPI NtGetContextThread( HANDLE handle, CONTEXT *context )
}
/***********************************************************************
* setup_exception
*
* Setup the exception record and context on the thread stack.
*/
static struct stack_layout *setup_exception( ucontext_t *sigcontext )
{
struct stack_layout *stack;
DWORD exception_code = 0;
/* push the stack_layout structure */
stack = (struct stack_layout *)((SP_sig(sigcontext) - sizeof(*stack)) & ~15);
stack->rec.ExceptionRecord = NULL;
stack->rec.ExceptionCode = exception_code;
stack->rec.ExceptionFlags = EXCEPTION_CONTINUABLE;
stack->rec.ExceptionAddress = (LPVOID)PC_sig(sigcontext);
stack->rec.NumberParameters = 0;
save_context( &stack->context, sigcontext );
save_fpu( &stack->context, sigcontext );
return stack;
}
extern void raise_func_trampoline( EXCEPTION_RECORD *rec, CONTEXT *context, raise_func func, void *sp );
__ASM_GLOBAL_FUNC( raise_func_trampoline,
__ASM_CFI(".cfi_signal_frame\n\t")
"stp x29, x30, [sp, #-0x20]!\n\t"
__ASM_CFI(".cfi_def_cfa_offset 32\n\t")
__ASM_CFI(".cfi_offset 29, -32\n\t")
__ASM_CFI(".cfi_offset 30, -24\n\t")
"mov x29, sp\n\t"
__ASM_CFI(".cfi_def_cfa_register 29\n\t")
"str x3, [sp, 0x10]\n\t"
__ASM_CFI(".cfi_remember_state\n\t")
__ASM_CFI(".cfi_escape 0x0f,0x03,0x8d,0x10,0x06\n\t") /* CFA */
__ASM_CFI(".cfi_escape 0x10,0x1d,0x02,0x8d,0x00\n\t") /* x29 */
__ASM_CFI(".cfi_escape 0x10,0x1e,0x02,0x8d,0x08\n\t") /* x30 */
"blr x2\n\t"
__ASM_CFI(".cfi_restore_state\n\t")
"brk #1")
/***********************************************************************
* setup_raise_exception
*
* Modify the signal context to call the exception raise function.
*/
static void setup_raise_exception( ucontext_t *sigcontext, struct stack_layout *stack )
{
NTSTATUS status = send_debug_event( &stack->rec, &stack->context, TRUE );
if (status == DBG_CONTINUE || status == DBG_EXCEPTION_HANDLED)
{
restore_context( &stack->context, sigcontext );
return;
}
REGn_sig(3, sigcontext) = SP_sig(sigcontext); /* original stack pointer, fourth arg for raise_func_trampoline */
SP_sig(sigcontext) = (ULONG_PTR)stack;
LR_sig(sigcontext) = PC_sig(sigcontext);
PC_sig(sigcontext) = (ULONG_PTR)raise_func_trampoline; /* raise_generic_exception; */
REGn_sig(0, sigcontext) = (ULONG_PTR)&stack->rec; /* first arg for raise_generic_exception */
REGn_sig(1, sigcontext) = (ULONG_PTR)&stack->context; /* second arg for raise_generic_exception */
REGn_sig(2, sigcontext) = (ULONG_PTR)KiUserExceptionDispatcher; /* third arg for raise_func_trampoline */
REGn_sig(18, sigcontext) = (ULONG_PTR)NtCurrentTeb();
}
/**********************************************************************
* segv_handler
*
* Handler for SIGSEGV and related errors.
*/
static void segv_handler( int signal, siginfo_t *info, void *ucontext )
{
struct stack_layout *stack;
ucontext_t *context = ucontext;
/* check for page fault inside the thread stack */
if (signal == SIGSEGV)
{
switch (virtual_handle_stack_fault( info->si_addr ))
{
case 1: /* handled */
return;
case -1: /* overflow */
stack = setup_exception( context );
stack->rec.ExceptionCode = EXCEPTION_STACK_OVERFLOW;
goto done;
}
}
stack = setup_exception( context );
if (stack->rec.ExceptionCode == EXCEPTION_STACK_OVERFLOW) goto done;
switch(signal)
{
case SIGILL: /* Invalid opcode exception */
stack->rec.ExceptionCode = EXCEPTION_ILLEGAL_INSTRUCTION;
break;
case SIGSEGV: /* Segmentation fault */
stack->rec.NumberParameters = 2;
stack->rec.ExceptionInformation[0] = (get_fault_esr( context ) & 0x40) != 0;
stack->rec.ExceptionInformation[1] = (ULONG_PTR)info->si_addr;
if (!(stack->rec.ExceptionCode = virtual_handle_fault( (void *)stack->rec.ExceptionInformation[1],
stack->rec.ExceptionInformation[0], FALSE )))
return;
break;
case SIGBUS: /* Alignment check exception */
stack->rec.ExceptionCode = EXCEPTION_DATATYPE_MISALIGNMENT;
break;
default:
ERR("Got unexpected signal %i\n", signal);
stack->rec.ExceptionCode = EXCEPTION_ILLEGAL_INSTRUCTION;
break;
}
done:
setup_raise_exception( context, stack );
}
/**********************************************************************
* trap_handler
*
* Handler for SIGTRAP.
*/
static void trap_handler( int signal, siginfo_t *info, void *ucontext )
{
ucontext_t *context = ucontext;
struct stack_layout *stack = setup_exception( context );
switch (info->si_code)
{
case TRAP_TRACE:
stack->rec.ExceptionCode = EXCEPTION_SINGLE_STEP;
break;
case TRAP_BRKPT:
default:
stack->rec.ExceptionCode = EXCEPTION_BREAKPOINT;
stack->context.Pc += 4;
break;
}
setup_raise_exception( context, stack );
}
/**********************************************************************
* fpe_handler
*
* Handler for SIGFPE.
*/
static void fpe_handler( int signal, siginfo_t *siginfo, void *sigcontext )
{
struct stack_layout *stack = setup_exception( sigcontext );
switch (siginfo->si_code & 0xffff )
{
#ifdef FPE_FLTSUB
case FPE_FLTSUB:
stack->rec.ExceptionCode = EXCEPTION_ARRAY_BOUNDS_EXCEEDED;
break;
#endif
#ifdef FPE_INTDIV
case FPE_INTDIV:
stack->rec.ExceptionCode = EXCEPTION_INT_DIVIDE_BY_ZERO;
break;
#endif
#ifdef FPE_INTOVF
case FPE_INTOVF:
stack->rec.ExceptionCode = EXCEPTION_INT_OVERFLOW;
break;
#endif
#ifdef FPE_FLTDIV
case FPE_FLTDIV:
stack->rec.ExceptionCode = EXCEPTION_FLT_DIVIDE_BY_ZERO;
break;
#endif
#ifdef FPE_FLTOVF
case FPE_FLTOVF:
stack->rec.ExceptionCode = EXCEPTION_FLT_OVERFLOW;
break;
#endif
#ifdef FPE_FLTUND
case FPE_FLTUND:
stack->rec.ExceptionCode = EXCEPTION_FLT_UNDERFLOW;
break;
#endif
#ifdef FPE_FLTRES
case FPE_FLTRES:
stack->rec.ExceptionCode = EXCEPTION_FLT_INEXACT_RESULT;
break;
#endif
#ifdef FPE_FLTINV
case FPE_FLTINV:
#endif
default:
stack->rec.ExceptionCode = EXCEPTION_FLT_INVALID_OPERATION;
break;
}
setup_raise_exception( sigcontext, stack );
}
/**********************************************************************
* int_handler
*
* Handler for SIGINT.
*/
static void int_handler( int signal, siginfo_t *siginfo, void *sigcontext )
{
struct stack_layout *stack = setup_exception( sigcontext );
stack->rec.ExceptionCode = CONTROL_C_EXIT;
setup_raise_exception( sigcontext, stack );
}
/**********************************************************************
* abrt_handler
*
* Handler for SIGABRT.
*/
static void abrt_handler( int signal, siginfo_t *siginfo, void *sigcontext )
{
struct stack_layout *stack = setup_exception( sigcontext );
stack->rec.ExceptionCode = EXCEPTION_WINE_ASSERTION;
stack->rec.ExceptionFlags = EH_NONCONTINUABLE;
setup_raise_exception( sigcontext, stack );
}
/**********************************************************************
* quit_handler
*
* Handler for SIGQUIT.
*/
static void quit_handler( int signal, siginfo_t *siginfo, void *sigcontext )
{
abort_thread(0);
}
/**********************************************************************
* usr1_handler
*
* Handler for SIGUSR1, used to signal a thread that it got suspended.
*/
static void usr1_handler( int signal, siginfo_t *siginfo, void *sigcontext )
{
CONTEXT context;
save_context( &context, sigcontext );
wait_suspend( &context );
restore_context( &context, sigcontext );
}
/**********************************************************************
* usr2_handler
*
* Handler for SIGUSR2, used to set a thread context.
*/
static void usr2_handler( int signal, siginfo_t *siginfo, void *sigcontext )
{
CONTEXT *context = InterlockedExchangePointer( (void **)&arm64_thread_data()->context, NULL );
if (!context) return;
if ((context->ContextFlags & ~CONTEXT_ARM64) & CONTEXT_FLOATING_POINT)
restore_fpu( context, sigcontext );
restore_context( context, sigcontext );
}
/**********************************************************************
* get_thread_ldt_entry
*/
@ -361,6 +756,41 @@ void signal_init_thread( TEB *teb )
}
/**********************************************************************
* signal_init_process
*/
void signal_init_process(void)
{
struct sigaction sig_act;
sig_act.sa_mask = server_block_set;
sig_act.sa_flags = SA_SIGINFO | SA_RESTART | SA_ONSTACK;
sig_act.sa_sigaction = int_handler;
if (sigaction( SIGINT, &sig_act, NULL ) == -1) goto error;
sig_act.sa_sigaction = fpe_handler;
if (sigaction( SIGFPE, &sig_act, NULL ) == -1) goto error;
sig_act.sa_sigaction = abrt_handler;
if (sigaction( SIGABRT, &sig_act, NULL ) == -1) goto error;
sig_act.sa_sigaction = quit_handler;
if (sigaction( SIGQUIT, &sig_act, NULL ) == -1) goto error;
sig_act.sa_sigaction = usr1_handler;
if (sigaction( SIGUSR1, &sig_act, NULL ) == -1) goto error;
sig_act.sa_sigaction = usr2_handler;
if (sigaction( SIGUSR2, &sig_act, NULL ) == -1) goto error;
sig_act.sa_sigaction = trap_handler;
if (sigaction( SIGTRAP, &sig_act, NULL ) == -1) goto error;
sig_act.sa_sigaction = segv_handler;
if (sigaction( SIGSEGV, &sig_act, NULL ) == -1) goto error;
if (sigaction( SIGILL, &sig_act, NULL ) == -1) goto error;
if (sigaction( SIGBUS, &sig_act, NULL ) == -1) goto error;
return;
error:
perror("sigaction");
exit(1);
}
/***********************************************************************
* init_thread_context
*/
@ -396,6 +826,7 @@ PCONTEXT DECLSPEC_HIDDEN attach_thread( LPTHREAD_START_ROUTINE entry, void *arg,
ctx = (CONTEXT *)NtCurrentTeb()->Tib.StackBase - 1;
init_thread_context( ctx, entry, arg, relay );
}
pthread_sigmask( SIG_UNBLOCK, &server_block_set, NULL );
ctx->ContextFlags = CONTEXT_FULL;
LdrInitializeThunk( ctx, (void **)&ctx->u.s.X0, 0, 0 );
return ctx;

1310
dlls/ntdll/unix/signal_i386.c
View File

File diff suppressed because it is too large Load Diff

488
dlls/ntdll/unix/signal_powerpc.c
View File

@ -63,9 +63,181 @@
#include "unix_private.h"
#include "wine/debug.h"
/***********************************************************************
* signal context platform-specific definitions
*/
#ifdef linux
/* All Registers access - only for local access */
# define REG_sig(reg_name, context) ((context)->uc_mcontext.regs->reg_name)
/* Gpr Registers access */
# define GPR_sig(reg_num, context) REG_sig(gpr[reg_num], context)
# define IAR_sig(context) REG_sig(nip, context) /* Program counter */
# define MSR_sig(context) REG_sig(msr, context) /* Machine State Register (Supervisor) */
# define CTR_sig(context) REG_sig(ctr, context) /* Count register */
# define XER_sig(context) REG_sig(xer, context) /* User's integer exception register */
# define LR_sig(context) REG_sig(link, context) /* Link register */
# define CR_sig(context) REG_sig(ccr, context) /* Condition register */
/* Float Registers access */
# define FLOAT_sig(reg_num, context) (((double*)((char*)((context)->uc_mcontext.regs+48*4)))[reg_num])
# define FPSCR_sig(context) (*(int*)((char*)((context)->uc_mcontext.regs+(48+32*2)*4)))
/* Exception Registers access */
# define DAR_sig(context) REG_sig(dar, context)
# define DSISR_sig(context) REG_sig(dsisr, context)
# define TRAP_sig(context) REG_sig(trap, context)
#endif /* linux */
#ifdef __APPLE__
/* All Registers access - only for local access */
# define REG_sig(reg_name, context) ((context)->uc_mcontext->ss.reg_name)
# define FLOATREG_sig(reg_name, context) ((context)->uc_mcontext->fs.reg_name)
# define EXCEPREG_sig(reg_name, context) ((context)->uc_mcontext->es.reg_name)
# define VECREG_sig(reg_name, context) ((context)->uc_mcontext->vs.reg_name)
/* Gpr Registers access */
# define GPR_sig(reg_num, context) REG_sig(r##reg_num, context)
# define IAR_sig(context) REG_sig(srr0, context) /* Program counter */
# define MSR_sig(context) REG_sig(srr1, context) /* Machine State Register (Supervisor) */
# define CTR_sig(context) REG_sig(ctr, context)
# define XER_sig(context) REG_sig(xer, context) /* Link register */
# define LR_sig(context) REG_sig(lr, context) /* User's integer exception register */
# define CR_sig(context) REG_sig(cr, context) /* Condition register */
/* Float Registers access */
# define FLOAT_sig(reg_num, context) FLOATREG_sig(fpregs[reg_num], context)
# define FPSCR_sig(context) FLOATREG_sig(fpscr, context)
/* Exception Registers access */
# define DAR_sig(context) EXCEPREG_sig(dar, context) /* Fault registers for coredump */
# define DSISR_sig(context) EXCEPREG_sig(dsisr, context)
# define TRAP_sig(context) EXCEPREG_sig(exception, context) /* number of powerpc exception taken */
/* Signal defs : Those are undefined on darwin
SIGBUS
#undef BUS_ADRERR
#undef BUS_OBJERR
SIGILL
#undef ILL_ILLOPN
#undef ILL_ILLTRP
#undef ILL_ILLADR
#undef ILL_COPROC
#undef ILL_PRVREG
#undef ILL_BADSTK
SIGTRAP
#undef TRAP_BRKPT
#undef TRAP_TRACE
SIGFPE
*/
#endif /* __APPLE__ */
static pthread_key_t teb_key;
/***********************************************************************
* save_context
*
* Set the register values from a sigcontext.
*/
static void save_context( CONTEXT *context, const ucontext_t *sigcontext )
{
#define C(x) context->Gpr##x = GPR_sig(x,sigcontext)
/* Save Gpr registers */
C(0); C(1); C(2); C(3); C(4); C(5); C(6); C(7); C(8); C(9); C(10);
C(11); C(12); C(13); C(14); C(15); C(16); C(17); C(18); C(19); C(20);
C(21); C(22); C(23); C(24); C(25); C(26); C(27); C(28); C(29); C(30);
C(31);
#undef C
context->Iar = IAR_sig(sigcontext); /* Program Counter */
context->Msr = MSR_sig(sigcontext); /* Machine State Register (Supervisor) */
context->Ctr = CTR_sig(sigcontext);
context->Xer = XER_sig(sigcontext);
context->Lr = LR_sig(sigcontext);
context->Cr = CR_sig(sigcontext);
/* Saving Exception regs */
context->Dar = DAR_sig(sigcontext);
context->Dsisr = DSISR_sig(sigcontext);
context->Trap = TRAP_sig(sigcontext);
}
/***********************************************************************
* restore_context
*
* Build a sigcontext from the register values.
*/
static void restore_context( const CONTEXT *context, ucontext_t *sigcontext )
{
#define C(x) GPR_sig(x,sigcontext) = context->Gpr##x
C(0); C(1); C(2); C(3); C(4); C(5); C(6); C(7); C(8); C(9); C(10);
C(11); C(12); C(13); C(14); C(15); C(16); C(17); C(18); C(19); C(20);
C(21); C(22); C(23); C(24); C(25); C(26); C(27); C(28); C(29); C(30);
C(31);
#undef C
IAR_sig(sigcontext) = context->Iar; /* Program Counter */
MSR_sig(sigcontext) = context->Msr; /* Machine State Register (Supervisor) */
CTR_sig(sigcontext) = context->Ctr;
XER_sig(sigcontext) = context->Xer;
LR_sig(sigcontext) = context->Lr;
CR_sig(sigcontext) = context->Cr;
/* Setting Exception regs */
DAR_sig(sigcontext) = context->Dar;
DSISR_sig(sigcontext) = context->Dsisr;
TRAP_sig(sigcontext) = context->Trap;
}
/***********************************************************************
* save_fpu
*
* Set the FPU context from a sigcontext.
*/
static inline void save_fpu( CONTEXT *context, const ucontext_t *sigcontext )
{
#define C(x) context->Fpr##x = FLOAT_sig(x,sigcontext)
C(0); C(1); C(2); C(3); C(4); C(5); C(6); C(7); C(8); C(9); C(10);
C(11); C(12); C(13); C(14); C(15); C(16); C(17); C(18); C(19); C(20);
C(21); C(22); C(23); C(24); C(25); C(26); C(27); C(28); C(29); C(30);
C(31);
#undef C
context->Fpscr = FPSCR_sig(sigcontext);
}
/***********************************************************************
* restore_fpu
*
* Restore the FPU context to a sigcontext.
*/
static inline void restore_fpu( CONTEXT *context, const ucontext_t *sigcontext )
{
#define C(x) FLOAT_sig(x,sigcontext) = context->Fpr##x
C(0); C(1); C(2); C(3); C(4); C(5); C(6); C(7); C(8); C(9); C(10);
C(11); C(12); C(13); C(14); C(15); C(16); C(17); C(18); C(19); C(20);
C(21); C(22); C(23); C(24); C(25); C(26); C(27); C(28); C(29); C(30);
C(31);
#undef C
FPSCR_sig(sigcontext) = context->Fpscr;
}
/***********************************************************************
* set_cpu_context
*
@ -437,6 +609,288 @@ NTSTATUS WINAPI NtGetContextThread( HANDLE handle, CONTEXT *context )
}
/**********************************************************************
* segv_handler
*
* Handler for SIGSEGV and related errors.
*/
static void segv_handler( int signal, siginfo_t *siginfo, void *sigcontext )
{
EXCEPTION_RECORD rec;
CONTEXT context;
NTSTATUS status;
save_context( &context, sigcontext );
rec.ExceptionRecord = NULL;
rec.ExceptionFlags = EXCEPTION_CONTINUABLE;
rec.ExceptionAddress = (LPVOID)context.Iar;
rec.NumberParameters = 0;
switch (signal)
{
case SIGSEGV:
switch (siginfo->si_code & 0xffff)
{
case SEGV_MAPERR:
case SEGV_ACCERR:
rec.NumberParameters = 2;
rec.ExceptionInformation[0] = 0; /* FIXME ? */
rec.ExceptionInformation[1] = (ULONG_PTR)siginfo->si_addr;
if (!(rec.ExceptionCode = unix_funcs->virtual_handle_fault(siginfo->si_addr, rec.ExceptionInformation[0], FALSE)))
goto done;
break;
default:
FIXME("Unhandled SIGSEGV/%x\n",siginfo->si_code);
break;
}
break;
case SIGBUS:
switch (siginfo->si_code & 0xffff)
{
case BUS_ADRALN:
rec.ExceptionCode = EXCEPTION_DATATYPE_MISALIGNMENT;
break;
#ifdef BUS_ADRERR
case BUS_ADRERR:
#endif
#ifdef BUS_OBJERR
case BUS_OBJERR:
/* FIXME: correct for all cases ? */
rec.NumberParameters = 2;
rec.ExceptionInformation[0] = 0; /* FIXME ? */
rec.ExceptionInformation[1] = (ULONG_PTR)siginfo->si_addr;
if (!(rec.ExceptionCode = unix_funcs->virtual_handle_fault(siginfo->si_addr, rec.ExceptionInformation[0], FALSE)))
goto done;
break;
#endif
default:
FIXME("Unhandled SIGBUS/%x\n",siginfo->si_code);
break;
}
break;
case SIGILL:
switch (siginfo->si_code & 0xffff)
{
case ILL_ILLOPC: /* illegal opcode */
#ifdef ILL_ILLOPN
case ILL_ILLOPN: /* illegal operand */
#endif
#ifdef ILL_ILLADR
case ILL_ILLADR: /* illegal addressing mode */
#endif
#ifdef ILL_ILLTRP
case ILL_ILLTRP: /* illegal trap */
#endif
#ifdef ILL_COPROC
case ILL_COPROC: /* coprocessor error */
#endif
rec.ExceptionCode = EXCEPTION_ILLEGAL_INSTRUCTION;
break;
case ILL_PRVOPC: /* privileged opcode */
#ifdef ILL_PRVREG
case ILL_PRVREG: /* privileged register */
#endif
rec.ExceptionCode = EXCEPTION_PRIV_INSTRUCTION;
break;
#ifdef ILL_BADSTK
case ILL_BADSTK: /* internal stack error */
rec.ExceptionCode = EXCEPTION_STACK_OVERFLOW;
break;
#endif
default:
FIXME("Unhandled SIGILL/%x\n", siginfo->si_code);
break;
}
break;
}
status = NtRaiseException( &rec, &context, TRUE );
if (status) RtlRaiseStatus( status );
done:
restore_context( &context, sigcontext );
}
/**********************************************************************
* trap_handler
*
* Handler for SIGTRAP.
*/
static void trap_handler( int signal, siginfo_t *siginfo, void *sigcontext )
{
EXCEPTION_RECORD rec;
CONTEXT context;
NTSTATUS status;
save_context( &context, sigcontext );
rec.ExceptionFlags = EXCEPTION_CONTINUABLE;
rec.ExceptionRecord = NULL;
rec.ExceptionAddress = (LPVOID)context.Iar;
rec.NumberParameters = 0;
/* FIXME: check if we might need to modify PC */
switch (siginfo->si_code & 0xffff)
{
#ifdef TRAP_BRKPT
case TRAP_BRKPT:
rec.ExceptionCode = EXCEPTION_BREAKPOINT;
break;
#endif
#ifdef TRAP_TRACE
case TRAP_TRACE:
rec.ExceptionCode = EXCEPTION_SINGLE_STEP;
break;
#endif
default:
FIXME("Unhandled SIGTRAP/%x\n", siginfo->si_code);
break;
}
status = NtRaiseException( &rec, &context, TRUE );
if (status) RtlRaiseStatus( status );
restore_context( &context, sigcontext );
}
/**********************************************************************
* fpe_handler
*
* Handler for SIGFPE.
*/
static void fpe_handler( int signal, siginfo_t *siginfo, void *sigcontext )
{
EXCEPTION_RECORD rec;
CONTEXT context;
NTSTATUS status;
save_fpu( &context, sigcontext );
save_context( &context, sigcontext );
switch (siginfo->si_code & 0xffff )
{
#ifdef FPE_FLTSUB
case FPE_FLTSUB:
rec.ExceptionCode = EXCEPTION_ARRAY_BOUNDS_EXCEEDED;
break;
#endif
#ifdef FPE_INTDIV
case FPE_INTDIV:
rec.ExceptionCode = EXCEPTION_INT_DIVIDE_BY_ZERO;
break;
#endif
#ifdef FPE_INTOVF
case FPE_INTOVF:
rec.ExceptionCode = EXCEPTION_INT_OVERFLOW;
break;
#endif
#ifdef FPE_FLTDIV
case FPE_FLTDIV:
rec.ExceptionCode = EXCEPTION_FLT_DIVIDE_BY_ZERO;
break;
#endif
#ifdef FPE_FLTOVF
case FPE_FLTOVF:
rec.ExceptionCode = EXCEPTION_FLT_OVERFLOW;
break;
#endif
#ifdef FPE_FLTUND
case FPE_FLTUND:
rec.ExceptionCode = EXCEPTION_FLT_UNDERFLOW;
break;
#endif
#ifdef FPE_FLTRES
case FPE_FLTRES:
rec.ExceptionCode = EXCEPTION_FLT_INEXACT_RESULT;
break;
#endif
#ifdef FPE_FLTINV
case FPE_FLTINV:
#endif
default:
rec.ExceptionCode = EXCEPTION_FLT_INVALID_OPERATION;
break;
}
rec.ExceptionFlags = EXCEPTION_CONTINUABLE;
rec.ExceptionRecord = NULL;
rec.ExceptionAddress = (LPVOID)context.Iar;
rec.NumberParameters = 0;
status = NtRaiseException( &rec, &context, TRUE );
if (status) RtlRaiseStatus( status );
restore_context( &context, sigcontext );
restore_fpu( &context, sigcontext );
}
/**********************************************************************
* int_handler
*
* Handler for SIGINT.
*/
static void int_handler( int signal, siginfo_t *siginfo, void *sigcontext )
{
EXCEPTION_RECORD rec;
CONTEXT context;
NTSTATUS status;
save_context( &context, sigcontext );
rec.ExceptionCode = CONTROL_C_EXIT;
rec.ExceptionFlags = EXCEPTION_CONTINUABLE;
rec.ExceptionRecord = NULL;
rec.ExceptionAddress = (LPVOID)context.Iar;
rec.NumberParameters = 0;
status = NtRaiseException( &rec, &context, TRUE );
if (status) RtlRaiseStatus( status );
restore_context( &context, sigcontext );
}
/**********************************************************************
* abrt_handler
*
* Handler for SIGABRT.
*/
static void abrt_handler( int signal, siginfo_t *siginfo, void *sigcontext )
{
EXCEPTION_RECORD rec;
CONTEXT context;
NTSTATUS status;
save_context( &context, sigcontext );
rec.ExceptionCode = EXCEPTION_WINE_ASSERTION;
rec.ExceptionFlags = EH_NONCONTINUABLE;
rec.ExceptionRecord = NULL;
rec.ExceptionAddress = (LPVOID)context.Iar;
rec.NumberParameters = 0;
status = NtRaiseException( &rec, &context, TRUE );
if (status) RtlRaiseStatus( status );
restore_context( &context, sigcontext );
}
/**********************************************************************
* quit_handler
*
* Handler for SIGQUIT.
*/
static void quit_handler( int signal, siginfo_t *siginfo, void *sigcontext )
{
unix_funcs->abort_thread(0);
}
/**********************************************************************
* usr1_handler
*
* Handler for SIGUSR1, used to signal a thread that it got suspended.
*/
static void usr1_handler( int signal, siginfo_t *siginfo, void *sigcontext )
{
CONTEXT context;
save_context( &context, sigcontext );
wait_suspend( &context );
restore_context( &context, sigcontext );
}
/**********************************************************************
* get_thread_ldt_entry
*/
@ -491,6 +945,40 @@ void signal_init_thread( TEB *teb )
}
/**********************************************************************
* signal_init_process
*/
void signal_init_process(void)
{
struct sigaction sig_act;
sig_act.sa_mask = server_block_set;
sig_act.sa_flags = SA_RESTART | SA_SIGINFO;
sig_act.sa_sigaction = int_handler;
if (sigaction( SIGINT, &sig_act, NULL ) == -1) goto error;
sig_act.sa_sigaction = fpe_handler;
if (sigaction( SIGFPE, &sig_act, NULL ) == -1) goto error;
sig_act.sa_sigaction = abrt_handler;
if (sigaction( SIGABRT, &sig_act, NULL ) == -1) goto error;
sig_act.sa_sigaction = quit_handler;
if (sigaction( SIGQUIT, &sig_act, NULL ) == -1) goto error;
sig_act.sa_sigaction = usr1_handler;
if (sigaction( SIGUSR1, &sig_act, NULL ) == -1) goto error;
sig_act.sa_sigaction = trap_handler;
if (sigaction( SIGTRAP, &sig_act, NULL ) == -1) goto error;
sig_act.sa_sigaction = segv_handler;
if (sigaction( SIGSEGV, &sig_act, NULL ) == -1) goto error;
if (sigaction( SIGILL, &sig_act, NULL ) == -1) goto error;
if (sigaction( SIGBUS, &sig_act, NULL ) == -1) goto error;
return;
error:
perror("sigaction");
exit(1);
}
/***********************************************************************
* signal_exit_thread
*/

778
dlls/ntdll/unix/signal_x86_64.c
View File

@ -86,11 +86,124 @@ WINE_DEFAULT_DEBUG_CHANNEL(seh);
#include <asm/prctl.h>
static inline int arch_prctl( int func, void *ptr ) { return syscall( __NR_arch_prctl, func, ptr ); }
#define RAX_sig(context) ((context)->uc_mcontext.gregs[REG_RAX])
#define RBX_sig(context) ((context)->uc_mcontext.gregs[REG_RBX])
#define RCX_sig(context) ((context)->uc_mcontext.gregs[REG_RCX])
#define RDX_sig(context) ((context)->uc_mcontext.gregs[REG_RDX])
#define RSI_sig(context) ((context)->uc_mcontext.gregs[REG_RSI])
#define RDI_sig(context) ((context)->uc_mcontext.gregs[REG_RDI])
#define RBP_sig(context) ((context)->uc_mcontext.gregs[REG_RBP])
#define R8_sig(context) ((context)->uc_mcontext.gregs[REG_R8])
#define R9_sig(context) ((context)->uc_mcontext.gregs[REG_R9])
#define R10_sig(context) ((context)->uc_mcontext.gregs[REG_R10])
#define R11_sig(context) ((context)->uc_mcontext.gregs[REG_R11])
#define R12_sig(context) ((context)->uc_mcontext.gregs[REG_R12])
#define R13_sig(context) ((context)->uc_mcontext.gregs[REG_R13])
#define R14_sig(context) ((context)->uc_mcontext.gregs[REG_R14])
#define R15_sig(context) ((context)->uc_mcontext.gregs[REG_R15])
#define CS_sig(context) (*((WORD *)&(context)->uc_mcontext.gregs[REG_CSGSFS] + 0))
#define GS_sig(context) (*((WORD *)&(context)->uc_mcontext.gregs[REG_CSGSFS] + 1))
#define FS_sig(context) (*((WORD *)&(context)->uc_mcontext.gregs[REG_CSGSFS] + 2))
#define RSP_sig(context) ((context)->uc_mcontext.gregs[REG_RSP])
#define RIP_sig(context) ((context)->uc_mcontext.gregs[REG_RIP])
#define EFL_sig(context) ((context)->uc_mcontext.gregs[REG_EFL])
#define TRAP_sig(context) ((context)->uc_mcontext.gregs[REG_TRAPNO])
#define ERROR_sig(context) ((context)->uc_mcontext.gregs[REG_ERR])
#define FPU_sig(context) ((XMM_SAVE_AREA32 *)((context)->uc_mcontext.fpregs))
#elif defined(__FreeBSD__) || defined (__FreeBSD_kernel__)
#define RAX_sig(context) ((context)->uc_mcontext.mc_rax)
#define RBX_sig(context) ((context)->uc_mcontext.mc_rbx)
#define RCX_sig(context) ((context)->uc_mcontext.mc_rcx)
#define RDX_sig(context) ((context)->uc_mcontext.mc_rdx)
#define RSI_sig(context) ((context)->uc_mcontext.mc_rsi)
#define RDI_sig(context) ((context)->uc_mcontext.mc_rdi)
#define RBP_sig(context) ((context)->uc_mcontext.mc_rbp)
#define R8_sig(context) ((context)->uc_mcontext.mc_r8)
#define R9_sig(context) ((context)->uc_mcontext.mc_r9)
#define R10_sig(context) ((context)->uc_mcontext.mc_r10)
#define R11_sig(context) ((context)->uc_mcontext.mc_r11)
#define R12_sig(context) ((context)->uc_mcontext.mc_r12)
#define R13_sig(context) ((context)->uc_mcontext.mc_r13)
#define R14_sig(context) ((context)->uc_mcontext.mc_r14)
#define R15_sig(context) ((context)->uc_mcontext.mc_r15)
#define CS_sig(context) ((context)->uc_mcontext.mc_cs)
#define DS_sig(context) ((context)->uc_mcontext.mc_ds)
#define ES_sig(context) ((context)->uc_mcontext.mc_es)
#define FS_sig(context) ((context)->uc_mcontext.mc_fs)
#define GS_sig(context) ((context)->uc_mcontext.mc_gs)
#define SS_sig(context) ((context)->uc_mcontext.mc_ss)
#define EFL_sig(context) ((context)->uc_mcontext.mc_rflags)
#define RIP_sig(context) ((context)->uc_mcontext.mc_rip)
#define RSP_sig(context) ((context)->uc_mcontext.mc_rsp)
#define TRAP_sig(context) ((context)->uc_mcontext.mc_trapno)
#define ERROR_sig(context) ((context)->uc_mcontext.mc_err)
#define FPU_sig(context) ((XMM_SAVE_AREA32 *)((context)->uc_mcontext.mc_fpstate))
#elif defined(__NetBSD__)
#define RAX_sig(context) ((context)->uc_mcontext.__gregs[_REG_RAX])
#define RBX_sig(context) ((context)->uc_mcontext.__gregs[_REG_RBX])
#define RCX_sig(context) ((context)->uc_mcontext.__gregs[_REG_RCX])
#define RDX_sig(context) ((context)->uc_mcontext.__gregs[_REG_RDX])
#define RSI_sig(context) ((context)->uc_mcontext.__gregs[_REG_RSI])
#define RDI_sig(context) ((context)->uc_mcontext.__gregs[_REG_RDI])
#define RBP_sig(context) ((context)->uc_mcontext.__gregs[_REG_RBP])
#define R8_sig(context) ((context)->uc_mcontext.__gregs[_REG_R8])
#define R9_sig(context) ((context)->uc_mcontext.__gregs[_REG_R9])
#define R10_sig(context) ((context)->uc_mcontext.__gregs[_REG_R10])
#define R11_sig(context) ((context)->uc_mcontext.__gregs[_REG_R11])
#define R12_sig(context) ((context)->uc_mcontext.__gregs[_REG_R12])
#define R13_sig(context) ((context)->uc_mcontext.__gregs[_REG_R13])
#define R14_sig(context) ((context)->uc_mcontext.__gregs[_REG_R14])
#define R15_sig(context) ((context)->uc_mcontext.__gregs[_REG_R15])
#define CS_sig(context) ((context)->uc_mcontext.__gregs[_REG_CS])
#define DS_sig(context) ((context)->uc_mcontext.__gregs[_REG_DS])
#define ES_sig(context) ((context)->uc_mcontext.__gregs[_REG_ES])
#define FS_sig(context) ((context)->uc_mcontext.__gregs[_REG_FS])
#define GS_sig(context) ((context)->uc_mcontext.__gregs[_REG_GS])
#define SS_sig(context) ((context)->uc_mcontext.__gregs[_REG_SS])
#define EFL_sig(context) ((context)->uc_mcontext.__gregs[_REG_RFL])
#define RIP_sig(context) (*((unsigned long*)&(context)->uc_mcontext.__gregs[_REG_RIP]))
#define RSP_sig(context) (*((unsigned long*)&(context)->uc_mcontext.__gregs[_REG_URSP]))
#define TRAP_sig(context) ((context)->uc_mcontext.__gregs[_REG_TRAPNO])
#define ERROR_sig(context) ((context)->uc_mcontext.__gregs[_REG_ERR])
#define FPU_sig(context) ((XMM_SAVE_AREA32 *)((context)->uc_mcontext.__fpregs))
#elif defined (__APPLE__)
#define RAX_sig(context) ((context)->uc_mcontext->__ss.__rax)
#define RBX_sig(context) ((context)->uc_mcontext->__ss.__rbx)
#define RCX_sig(context) ((context)->uc_mcontext->__ss.__rcx)
#define RDX_sig(context) ((context)->uc_mcontext->__ss.__rdx)
#define RSI_sig(context) ((context)->uc_mcontext->__ss.__rsi)
#define RDI_sig(context) ((context)->uc_mcontext->__ss.__rdi)
#define RBP_sig(context) ((context)->uc_mcontext->__ss.__rbp)
#define R8_sig(context) ((context)->uc_mcontext->__ss.__r8)
#define R9_sig(context) ((context)->uc_mcontext->__ss.__r9)
#define R10_sig(context) ((context)->uc_mcontext->__ss.__r10)
#define R11_sig(context) ((context)->uc_mcontext->__ss.__r11)
#define R12_sig(context) ((context)->uc_mcontext->__ss.__r12)
#define R13_sig(context) ((context)->uc_mcontext->__ss.__r13)
#define R14_sig(context) ((context)->uc_mcontext->__ss.__r14)
#define R15_sig(context) ((context)->uc_mcontext->__ss.__r15)
#define CS_sig(context) ((context)->uc_mcontext->__ss.__cs)
#define FS_sig(context) ((context)->uc_mcontext->__ss.__fs)
#define GS_sig(context) ((context)->uc_mcontext->__ss.__gs)
#define EFL_sig(context) ((context)->uc_mcontext->__ss.__rflags)
#define RIP_sig(context) (*((unsigned long*)&(context)->uc_mcontext->__ss.__rip))
#define RSP_sig(context) (*((unsigned long*)&(context)->uc_mcontext->__ss.__rsp))
#define TRAP_sig(context) ((context)->uc_mcontext->__es.__trapno)
#define ERROR_sig(context) ((context)->uc_mcontext->__es.__err)
#define FPU_sig(context) ((XMM_SAVE_AREA32 *)&(context)->uc_mcontext->__fs.__fpu_fcw)
#else
#error You must define the signal context functions for your platform
#endif
enum i386_trap_code
{
TRAP_x86_UNKNOWN = -1, /* Unknown fault (TRAP_sig not defined) */
TRAP_x86_DIVIDE = 0, /* Division by zero exception */
TRAP_x86_TRCTRAP = 1, /* Single-step exception */
TRAP_x86_NMI = 2, /* NMI interrupt */
@ -114,6 +227,20 @@ enum i386_trap_code
static const size_t teb_size = 0x2000; /* we reserve two pages for the TEB */
typedef void (*raise_func)( EXCEPTION_RECORD *rec, CONTEXT *context );
/* stack layout when calling an exception raise function */
struct stack_layout
{
CONTEXT context;
EXCEPTION_RECORD rec;
ULONG64 rsi;
ULONG64 rdi;
ULONG64 rbp;
ULONG64 rip;
ULONG64 red_zone[16];
};
struct amd64_thread_data
{
DWORD_PTR dr0; /* debug registers */
@ -134,6 +261,141 @@ static inline struct amd64_thread_data *amd64_thread_data(void)
}
static inline void set_sigcontext( const CONTEXT *context, ucontext_t *sigcontext )
{
RAX_sig(sigcontext) = context->Rax;
RCX_sig(sigcontext) = context->Rcx;
RDX_sig(sigcontext) = context->Rdx;
RBX_sig(sigcontext) = context->Rbx;
RSP_sig(sigcontext) = context->Rsp;
RBP_sig(sigcontext) = context->Rbp;
RSI_sig(sigcontext) = context->Rsi;
RDI_sig(sigcontext) = context->Rdi;
R8_sig(sigcontext) = context->R8;
R9_sig(sigcontext) = context->R9;
R10_sig(sigcontext) = context->R10;
R11_sig(sigcontext) = context->R11;
R12_sig(sigcontext) = context->R12;
R13_sig(sigcontext) = context->R13;
R14_sig(sigcontext) = context->R14;
R15_sig(sigcontext) = context->R15;
RIP_sig(sigcontext) = context->Rip;
CS_sig(sigcontext) = context->SegCs;
FS_sig(sigcontext) = context->SegFs;
GS_sig(sigcontext) = context->SegGs;
EFL_sig(sigcontext) = context->EFlags;
#ifdef DS_sig
DS_sig(sigcontext) = context->SegDs;
#endif
#ifdef ES_sig
ES_sig(sigcontext) = context->SegEs;
#endif
#ifdef SS_sig
SS_sig(sigcontext) = context->SegSs;
#endif
}
/***********************************************************************
* get_signal_stack
*
* Get the base of the signal stack for the current thread.
*/
static inline void *get_signal_stack(void)
{
return (char *)NtCurrentTeb() + teb_size;
}
/***********************************************************************
* is_inside_signal_stack
*
* Check if pointer is inside the signal stack.
*/
static inline BOOL is_inside_signal_stack( void *ptr )
{
return ((char *)ptr >= (char *)get_signal_stack() &&
(char *)ptr < (char *)get_signal_stack() + signal_stack_size);
}
/***********************************************************************
* save_context
*
* Set the register values from a sigcontext.
*/
static void save_context( CONTEXT *context, const ucontext_t *sigcontext )
{
context->ContextFlags = CONTEXT_CONTROL | CONTEXT_INTEGER | CONTEXT_SEGMENTS | CONTEXT_DEBUG_REGISTERS;
context->Rax = RAX_sig(sigcontext);
context->Rcx = RCX_sig(sigcontext);
context->Rdx = RDX_sig(sigcontext);
context->Rbx = RBX_sig(sigcontext);
context->Rsp = RSP_sig(sigcontext);
context->Rbp = RBP_sig(sigcontext);
context->Rsi = RSI_sig(sigcontext);
context->Rdi = RDI_sig(sigcontext);
context->R8 = R8_sig(sigcontext);
context->R9 = R9_sig(sigcontext);
context->R10 = R10_sig(sigcontext);
context->R11 = R11_sig(sigcontext);
context->R12 = R12_sig(sigcontext);
context->R13 = R13_sig(sigcontext);
context->R14 = R14_sig(sigcontext);
context->R15 = R15_sig(sigcontext);
context->Rip = RIP_sig(sigcontext);
context->SegCs = CS_sig(sigcontext);
context->SegFs = FS_sig(sigcontext);
context->SegGs = GS_sig(sigcontext);
context->EFlags = EFL_sig(sigcontext);
#ifdef DS_sig
context->SegDs = DS_sig(sigcontext);
#else
__asm__("movw %%ds,%0" : "=m" (context->SegDs));
#endif
#ifdef ES_sig
context->SegEs = ES_sig(sigcontext);
#else
__asm__("movw %%es,%0" : "=m" (context->SegEs));
#endif
#ifdef SS_sig
context->SegSs = SS_sig(sigcontext);
#else
__asm__("movw %%ss,%0" : "=m" (context->SegSs));
#endif
context->Dr0 = amd64_thread_data()->dr0;
context->Dr1 = amd64_thread_data()->dr1;
context->Dr2 = amd64_thread_data()->dr2;
context->Dr3 = amd64_thread_data()->dr3;
context->Dr6 = amd64_thread_data()->dr6;
context->Dr7 = amd64_thread_data()->dr7;
if (FPU_sig(sigcontext))
{
context->ContextFlags |= CONTEXT_FLOATING_POINT;
context->u.FltSave = *FPU_sig(sigcontext);
context->MxCsr = context->u.FltSave.MxCsr;
}
}
/***********************************************************************
* restore_context
*
* Build a sigcontext from the register values.
*/
static void restore_context( const CONTEXT *context, ucontext_t *sigcontext )
{
amd64_thread_data()->dr0 = context->Dr0;
amd64_thread_data()->dr1 = context->Dr1;
amd64_thread_data()->dr2 = context->Dr2;
amd64_thread_data()->dr3 = context->Dr3;
amd64_thread_data()->dr6 = context->Dr6;
amd64_thread_data()->dr7 = context->Dr7;
set_sigcontext( context, sigcontext );
if (FPU_sig(sigcontext)) *FPU_sig(sigcontext) = context->u.FltSave;
}
/***********************************************************************
* set_full_cpu_context
*
@ -501,6 +763,485 @@ NTSTATUS WINAPI NtGetContextThread( HANDLE handle, CONTEXT *context )
}
extern void CDECL raise_func_trampoline( EXCEPTION_RECORD *rec, CONTEXT *context, raise_func func );
__ASM_GLOBAL_FUNC( raise_func_trampoline,
__ASM_CFI(".cfi_signal_frame\n\t")
__ASM_CFI(".cfi_def_cfa %rbp,160\n\t") /* red zone + rip + rbp + rdi + rsi */
__ASM_CFI(".cfi_rel_offset %rip,24\n\t")
__ASM_CFI(".cfi_rel_offset %rbp,16\n\t")
__ASM_CFI(".cfi_rel_offset %rdi,8\n\t")
__ASM_CFI(".cfi_rel_offset %rsi,0\n\t")
"call *%r8\n\t"
"int $3")
/***********************************************************************
* setup_exception
*
* Setup a proper stack frame for the raise function, and modify the
* sigcontext so that the return from the signal handler will call
* the raise function.
*/
static struct stack_layout *setup_exception( ucontext_t *sigcontext )
{
struct stack_layout *stack;
DWORD exception_code = 0;
stack = (struct stack_layout *)(RSP_sig(sigcontext) & ~15);
/* stack sanity checks */
if (is_inside_signal_stack( stack ))
{
ERR( "nested exception on signal stack in thread %04x eip %016lx esp %016lx stack %p-%p\n",
GetCurrentThreadId(), (ULONG_PTR)RIP_sig(sigcontext), (ULONG_PTR)RSP_sig(sigcontext),
NtCurrentTeb()->Tib.StackLimit, NtCurrentTeb()->Tib.StackBase );
abort_thread(1);
}
if (stack - 1 > stack || /* check for overflow in subtraction */
(char *)stack <= (char *)NtCurrentTeb()->DeallocationStack ||
(char *)stack > (char *)NtCurrentTeb()->Tib.StackBase)
{
WARN( "exception outside of stack limits in thread %04x eip %016lx esp %016lx stack %p-%p\n",
GetCurrentThreadId(), (ULONG_PTR)RIP_sig(sigcontext), (ULONG_PTR)RSP_sig(sigcontext),
NtCurrentTeb()->Tib.StackLimit, NtCurrentTeb()->Tib.StackBase );
}
else if ((char *)(stack - 1) < (char *)NtCurrentTeb()->DeallocationStack + 4096)
{
/* stack overflow on last page, unrecoverable */
UINT diff = (char *)NtCurrentTeb()->DeallocationStack + 4096 - (char *)(stack - 1);
ERR( "stack overflow %u bytes in thread %04x eip %016lx esp %016lx stack %p-%p-%p\n",
diff, GetCurrentThreadId(), (ULONG_PTR)RIP_sig(sigcontext),
(ULONG_PTR)RSP_sig(sigcontext), NtCurrentTeb()->DeallocationStack,
NtCurrentTeb()->Tib.StackLimit, NtCurrentTeb()->Tib.StackBase );
abort_thread(1);
}
else if ((char *)(stack - 1) < (char *)NtCurrentTeb()->Tib.StackLimit)
{
/* stack access below stack limit, may be recoverable */
switch (virtual_handle_stack_fault( stack - 1 ))
{
case 0: /* not handled */
{
UINT diff = (char *)NtCurrentTeb()->Tib.StackLimit - (char *)(stack - 1);
ERR( "stack overflow %u bytes in thread %04x eip %016lx esp %016lx stack %p-%p-%p\n",
diff, GetCurrentThreadId(), (ULONG_PTR)RIP_sig(sigcontext),
(ULONG_PTR)RSP_sig(sigcontext), NtCurrentTeb()->DeallocationStack,
NtCurrentTeb()->Tib.StackLimit, NtCurrentTeb()->Tib.StackBase );
abort_thread(1);
}
case -1: /* overflow */
exception_code = EXCEPTION_STACK_OVERFLOW;
break;
}
}
stack--; /* push the stack_layout structure */
#if defined(VALGRIND_MAKE_MEM_UNDEFINED)
VALGRIND_MAKE_MEM_UNDEFINED(stack, sizeof(*stack));
#elif defined(VALGRIND_MAKE_WRITABLE)
VALGRIND_MAKE_WRITABLE(stack, sizeof(*stack));
#endif
stack->rec.ExceptionRecord = NULL;
stack->rec.ExceptionCode = exception_code;
stack->rec.ExceptionFlags = EXCEPTION_CONTINUABLE;
stack->rec.ExceptionAddress = (void *)RIP_sig(sigcontext);
stack->rec.NumberParameters = 0;
save_context( &stack->context, sigcontext );
return stack;
}
static void setup_raise_exception( ucontext_t *sigcontext, struct stack_layout *stack )
{
ULONG64 *rsp_ptr;
NTSTATUS status;
if (stack->rec.ExceptionCode == EXCEPTION_SINGLE_STEP)
{
/* when single stepping can't tell whether this is a hw bp or a
* single step interrupt. try to avoid as much overhead as possible
* and only do a server call if there is any hw bp enabled. */
if (!(stack->context.EFlags & 0x100) || (stack->context.Dr7 & 0xff))
{
/* (possible) hardware breakpoint, fetch the debug registers */
DWORD saved_flags = stack->context.ContextFlags;
stack->context.ContextFlags = CONTEXT_DEBUG_REGISTERS;
NtGetContextThread(GetCurrentThread(), &stack->context);
stack->context.ContextFlags |= saved_flags; /* restore flags */
}
stack->context.EFlags &= ~0x100; /* clear single-step flag */
}
status = send_debug_event( &stack->rec, &stack->context, TRUE );
if (status == DBG_CONTINUE || status == DBG_EXCEPTION_HANDLED)
{
restore_context( &stack->context, sigcontext );
return;
}
/* store return address and %rbp without aligning, so that the offset is fixed */
rsp_ptr = (ULONG64 *)RSP_sig(sigcontext) - 16;
*(--rsp_ptr) = stack->context.Rip;
*(--rsp_ptr) = stack->context.Rbp;
*(--rsp_ptr) = stack->context.Rdi;
*(--rsp_ptr) = stack->context.Rsi;
/* now modify the sigcontext to return to the raise function */
RIP_sig(sigcontext) = (ULONG_PTR)raise_func_trampoline;
RCX_sig(sigcontext) = (ULONG_PTR)&stack->rec;
RDX_sig(sigcontext) = (ULONG_PTR)&stack->context;
R8_sig(sigcontext) = (ULONG_PTR)KiUserExceptionDispatcher;
RBP_sig(sigcontext) = (ULONG_PTR)rsp_ptr;
RSP_sig(sigcontext) = (ULONG_PTR)stack;
/* clear single-step, direction, and align check flag */
EFL_sig(sigcontext) &= ~(0x100|0x400|0x40000);
}
/***********************************************************************
* is_privileged_instr
*
* Check if the fault location is a privileged instruction.
*/
static inline DWORD is_privileged_instr( CONTEXT *context )
{
BYTE instr[16];
unsigned int i, prefix_count = 0;
unsigned int len = virtual_uninterrupted_read_memory( (BYTE *)context->Rip, instr, sizeof(instr) );
for (i = 0; i < len; i++) switch (instr[i])
{
/* instruction prefixes */
case 0x2e: /* %cs: */
case 0x36: /* %ss: */
case 0x3e: /* %ds: */
case 0x26: /* %es: */
case 0x40: /* rex */
case 0x41: /* rex */
case 0x42: /* rex */
case 0x43: /* rex */
case 0x44: /* rex */
case 0x45: /* rex */
case 0x46: /* rex */
case 0x47: /* rex */
case 0x48: /* rex */
case 0x49: /* rex */
case 0x4a: /* rex */
case 0x4b: /* rex */
case 0x4c: /* rex */
case 0x4d: /* rex */
case 0x4e: /* rex */
case 0x4f: /* rex */
case 0x64: /* %fs: */
case 0x65: /* %gs: */
case 0x66: /* opcode size */
case 0x67: /* addr size */
case 0xf0: /* lock */
case 0xf2: /* repne */
case 0xf3: /* repe */
if (++prefix_count >= 15) return EXCEPTION_ILLEGAL_INSTRUCTION;
continue;
case 0x0f: /* extended instruction */
if (i == len - 1) return 0;
switch (instr[i + 1])
{
case 0x06: /* clts */
case 0x08: /* invd */
case 0x09: /* wbinvd */
case 0x20: /* mov crX, reg */
case 0x21: /* mov drX, reg */
case 0x22: /* mov reg, crX */
case 0x23: /* mov reg drX */
return EXCEPTION_PRIV_INSTRUCTION;
}
return 0;
case 0x6c: /* insb (%dx) */
case 0x6d: /* insl (%dx) */
case 0x6e: /* outsb (%dx) */
case 0x6f: /* outsl (%dx) */
case 0xcd: /* int $xx */
case 0xe4: /* inb al,XX */
case 0xe5: /* in (e)ax,XX */
case 0xe6: /* outb XX,al */
case 0xe7: /* out XX,(e)ax */
case 0xec: /* inb (%dx),%al */
case 0xed: /* inl (%dx),%eax */
case 0xee: /* outb %al,(%dx) */
case 0xef: /* outl %eax,(%dx) */
case 0xf4: /* hlt */
case 0xfa: /* cli */
case 0xfb: /* sti */
return EXCEPTION_PRIV_INSTRUCTION;
default:
return 0;
}
return 0;
}
/***********************************************************************
* handle_interrupt
*
* Handle an interrupt.
*/
static inline BOOL handle_interrupt( ucontext_t *sigcontext, struct stack_layout *stack )
{
switch (ERROR_sig(sigcontext) >> 3)
{
case 0x2c:
stack->rec.ExceptionCode = STATUS_ASSERTION_FAILURE;
break;
case 0x2d:
switch (stack->context.Rax)
{
case 1: /* BREAKPOINT_PRINT */
case 3: /* BREAKPOINT_LOAD_SYMBOLS */
case 4: /* BREAKPOINT_UNLOAD_SYMBOLS */
case 5: /* BREAKPOINT_COMMAND_STRING (>= Win2003) */
RIP_sig(sigcontext) += 3;
return TRUE;
}
stack->context.Rip += 3;
stack->rec.ExceptionCode = EXCEPTION_BREAKPOINT;
stack->rec.ExceptionAddress = (void *)stack->context.Rip;
stack->rec.NumberParameters = 1;
stack->rec.ExceptionInformation[0] = stack->context.Rax;
break;
default:
return FALSE;
}
setup_raise_exception( sigcontext, stack );
return TRUE;
}
/**********************************************************************
* segv_handler
*
* Handler for SIGSEGV and related errors.
*/
static void segv_handler( int signal, siginfo_t *siginfo, void *sigcontext )
{
struct stack_layout *stack;
ucontext_t *ucontext = sigcontext;
stack = (struct stack_layout *)(RSP_sig(ucontext) & ~15);
/* check for exceptions on the signal stack caused by write watches */
if (TRAP_sig(ucontext) == TRAP_x86_PAGEFLT && is_inside_signal_stack( stack ) &&
!virtual_handle_fault( siginfo->si_addr, (ERROR_sig(ucontext) >> 1) & 0x09, TRUE ))
{
return;
}
/* check for page fault inside the thread stack */
if (TRAP_sig(ucontext) == TRAP_x86_PAGEFLT)
{
switch (virtual_handle_stack_fault( siginfo->si_addr ))
{
case 1: /* handled */
return;
case -1: /* overflow */
stack = setup_exception( sigcontext );
stack->rec.ExceptionCode = EXCEPTION_STACK_OVERFLOW;
goto done;
}
}
stack = setup_exception( sigcontext );
if (stack->rec.ExceptionCode == EXCEPTION_STACK_OVERFLOW) goto done;
switch(TRAP_sig(ucontext))
{
case TRAP_x86_OFLOW: /* Overflow exception */
stack->rec.ExceptionCode = EXCEPTION_INT_OVERFLOW;
break;
case TRAP_x86_BOUND: /* Bound range exception */
stack->rec.ExceptionCode = EXCEPTION_ARRAY_BOUNDS_EXCEEDED;
break;
case TRAP_x86_PRIVINFLT: /* Invalid opcode exception */
stack->rec.ExceptionCode = EXCEPTION_ILLEGAL_INSTRUCTION;
break;
case TRAP_x86_STKFLT: /* Stack fault */
stack->rec.ExceptionCode = EXCEPTION_STACK_OVERFLOW;
break;
case TRAP_x86_SEGNPFLT: /* Segment not present exception */
case TRAP_x86_PROTFLT: /* General protection fault */
{
WORD err = ERROR_sig(ucontext);
if (!err && (stack->rec.ExceptionCode = is_privileged_instr( &stack->context ))) break;
if ((err & 7) == 2 && handle_interrupt( ucontext, stack )) return;
stack->rec.ExceptionCode = EXCEPTION_ACCESS_VIOLATION;
stack->rec.NumberParameters = 2;
stack->rec.ExceptionInformation[0] = 0;
stack->rec.ExceptionInformation[1] = 0xffffffffffffffff;
}
break;
case TRAP_x86_PAGEFLT: /* Page fault */
stack->rec.NumberParameters = 2;
stack->rec.ExceptionInformation[0] = (ERROR_sig(ucontext) >> 1) & 0x09;
stack->rec.ExceptionInformation[1] = (ULONG_PTR)siginfo->si_addr;
if (!(stack->rec.ExceptionCode = virtual_handle_fault((void *)stack->rec.ExceptionInformation[1],
stack->rec.ExceptionInformation[0], FALSE )))
return;
break;
case TRAP_x86_ALIGNFLT: /* Alignment check exception */
stack->rec.ExceptionCode = EXCEPTION_DATATYPE_MISALIGNMENT;
break;
default:
ERR( "Got unexpected trap %ld\n", (ULONG_PTR)TRAP_sig(ucontext) );
/* fall through */
case TRAP_x86_NMI: /* NMI interrupt */
case TRAP_x86_DNA: /* Device not available exception */
case TRAP_x86_DOUBLEFLT: /* Double fault exception */
case TRAP_x86_TSSFLT: /* Invalid TSS exception */
case TRAP_x86_MCHK: /* Machine check exception */
case TRAP_x86_CACHEFLT: /* Cache flush exception */
stack->rec.ExceptionCode = EXCEPTION_ILLEGAL_INSTRUCTION;
break;
}
done:
setup_raise_exception( sigcontext, stack );
}
/**********************************************************************
* trap_handler
*
* Handler for SIGTRAP.
*/
static void trap_handler( int signal, siginfo_t *siginfo, void *sigcontext )
{
struct stack_layout *stack = setup_exception( sigcontext );
switch (siginfo->si_code)
{
case TRAP_TRACE: /* Single-step exception */
case 4 /* TRAP_HWBKPT */: /* Hardware breakpoint exception */
stack->rec.ExceptionCode = EXCEPTION_SINGLE_STEP;
break;
case TRAP_BRKPT: /* Breakpoint exception */
#ifdef SI_KERNEL
case SI_KERNEL:
#endif
/* Check if this is actually icebp instruction */
if (((unsigned char *)stack->rec.ExceptionAddress)[-1] == 0xF1)
{
stack->rec.ExceptionCode = EXCEPTION_SINGLE_STEP;
break;
}
stack->rec.ExceptionAddress = (char *)stack->rec.ExceptionAddress - 1; /* back up over the int3 instruction */
/* fall through */
default:
stack->rec.ExceptionCode = EXCEPTION_BREAKPOINT;
stack->rec.NumberParameters = 1;
stack->rec.ExceptionInformation[0] = 0;
break;
}
setup_raise_exception( sigcontext, stack );
}
/**********************************************************************
* fpe_handler
*
* Handler for SIGFPE.
*/
static void fpe_handler( int signal, siginfo_t *siginfo, void *sigcontext )
{
struct stack_layout *stack = setup_exception( sigcontext );
switch (siginfo->si_code)
{
case FPE_FLTSUB:
stack->rec.ExceptionCode = EXCEPTION_ARRAY_BOUNDS_EXCEEDED;
break;
case FPE_INTDIV:
stack->rec.ExceptionCode = EXCEPTION_INT_DIVIDE_BY_ZERO;
break;
case FPE_INTOVF:
stack->rec.ExceptionCode = EXCEPTION_INT_OVERFLOW;
break;
case FPE_FLTDIV:
stack->rec.ExceptionCode = EXCEPTION_FLT_DIVIDE_BY_ZERO;
break;
case FPE_FLTOVF:
stack->rec.ExceptionCode = EXCEPTION_FLT_OVERFLOW;
break;
case FPE_FLTUND:
stack->rec.ExceptionCode = EXCEPTION_FLT_UNDERFLOW;
break;
case FPE_FLTRES:
stack->rec.ExceptionCode = EXCEPTION_FLT_INEXACT_RESULT;
break;
case FPE_FLTINV:
default:
stack->rec.ExceptionCode = EXCEPTION_FLT_INVALID_OPERATION;
break;
}
setup_raise_exception( sigcontext, stack );
}
/**********************************************************************
* int_handler
*
* Handler for SIGINT.
*/
static void int_handler( int signal, siginfo_t *siginfo, void *sigcontext )
{
struct stack_layout *stack = setup_exception( sigcontext );
stack->rec.ExceptionCode = CONTROL_C_EXIT;
setup_raise_exception( sigcontext, stack );
}
/**********************************************************************
* abrt_handler
*
* Handler for SIGABRT.
*/
static void abrt_handler( int signal, siginfo_t *siginfo, void *sigcontext )
{
struct stack_layout *stack = setup_exception( sigcontext );
stack->rec.ExceptionCode = EXCEPTION_WINE_ASSERTION;
stack->rec.ExceptionFlags = EH_NONCONTINUABLE;
setup_raise_exception( sigcontext, stack );
}
/**********************************************************************
* quit_handler
*
* Handler for SIGQUIT.
*/
static void quit_handler( int signal, siginfo_t *siginfo, void *ucontext )
{
abort_thread(0);
}
/**********************************************************************
* usr1_handler
*
* Handler for SIGUSR1, used to signal a thread that it got suspended.
*/
static void usr1_handler( int signal, siginfo_t *siginfo, void *ucontext )
{
CONTEXT context;
save_context( &context, ucontext );
wait_suspend( &context );
restore_context( &context, ucontext );
}
/**********************************************************************
* get_thread_ldt_entry
*/
@ -641,6 +1382,40 @@ void signal_init_thread( TEB *teb )
}
/**********************************************************************
* signal_init_process
*/
void signal_init_process(void)
{
struct sigaction sig_act;
sig_act.sa_mask = server_block_set;
sig_act.sa_flags = SA_SIGINFO | SA_RESTART | SA_ONSTACK;
sig_act.sa_sigaction = int_handler;
if (sigaction( SIGINT, &sig_act, NULL ) == -1) goto error;
sig_act.sa_sigaction = fpe_handler;
if (sigaction( SIGFPE, &sig_act, NULL ) == -1) goto error;
sig_act.sa_sigaction = abrt_handler;
if (sigaction( SIGABRT, &sig_act, NULL ) == -1) goto error;
sig_act.sa_sigaction = quit_handler;
if (sigaction( SIGQUIT, &sig_act, NULL ) == -1) goto error;
sig_act.sa_sigaction = usr1_handler;
if (sigaction( SIGUSR1, &sig_act, NULL ) == -1) goto error;
sig_act.sa_sigaction = trap_handler;
if (sigaction( SIGTRAP, &sig_act, NULL ) == -1) goto error;
sig_act.sa_sigaction = segv_handler;
if (sigaction( SIGSEGV, &sig_act, NULL ) == -1) goto error;
if (sigaction( SIGILL, &sig_act, NULL ) == -1) goto error;
if (sigaction( SIGBUS, &sig_act, NULL ) == -1) goto error;
return;
error:
perror("sigaction");
exit(1);
}
/***********************************************************************
* init_thread_context
*/
@ -681,6 +1456,7 @@ PCONTEXT DECLSPEC_HIDDEN attach_thread( LPTHREAD_START_ROUTINE entry, void *arg,
ctx = (CONTEXT *)((char *)NtCurrentTeb()->Tib.StackBase - 0x30) - 1;
init_thread_context( ctx, entry, arg, relay );
}
pthread_sigmask( SIG_UNBLOCK, &server_block_set, NULL );
ctx->ContextFlags = CONTEXT_FULL;
LdrInitializeThunk( ctx, (void **)&ctx->Rcx, 0, 0 );
return ctx;

11
dlls/ntdll/unix/thread.c
View File

@ -320,15 +320,6 @@ done:
}
/***********************************************************************
* start_process
*/
void CDECL start_process( PRTL_THREAD_START_ROUTINE entry, BOOL suspend, void *relay )
{
signal_start_thread( entry, NtCurrentTeb()->Peb, suspend, relay, NtCurrentTeb() );
}
/***********************************************************************
* abort_thread
*/
@ -394,7 +385,7 @@ void wait_suspend( CONTEXT *context )
*
* Send an EXCEPTION_DEBUG_EVENT event to the debugger.
*/
static NTSTATUS send_debug_event( EXCEPTION_RECORD *rec, CONTEXT *context, BOOL first_chance )
NTSTATUS send_debug_event( EXCEPTION_RECORD *rec, CONTEXT *context, BOOL first_chance )
{
NTSTATUS ret;
DWORD i;

15
dlls/ntdll/unix/unix_private.h
View File

@ -68,17 +68,12 @@ extern NTSTATUS CDECL virtual_map_section( HANDLE handle, PVOID *addr_ptr, unsig
extern void CDECL virtual_get_system_info( SYSTEM_BASIC_INFORMATION *info ) DECLSPEC_HIDDEN;
extern NTSTATUS CDECL virtual_create_builtin_view( void *module ) DECLSPEC_HIDDEN;
extern NTSTATUS CDECL virtual_alloc_thread_stack( INITIAL_TEB *stack, SIZE_T reserve_size, SIZE_T commit_size, SIZE_T *pthread_size ) DECLSPEC_HIDDEN;
extern NTSTATUS CDECL virtual_handle_fault( LPCVOID addr, DWORD err, BOOL on_signal_stack ) DECLSPEC_HIDDEN;
extern unsigned int CDECL virtual_locked_server_call( void *req_ptr ) DECLSPEC_HIDDEN;
extern ssize_t CDECL virtual_locked_read( int fd, void *addr, size_t size ) DECLSPEC_HIDDEN;
extern ssize_t CDECL virtual_locked_pread( int fd, void *addr, size_t size, off_t offset ) DECLSPEC_HIDDEN;
extern ssize_t CDECL virtual_locked_recvmsg( int fd, struct msghdr *hdr, int flags ) DECLSPEC_HIDDEN;
extern BOOL CDECL virtual_is_valid_code_address( const void *addr, SIZE_T size ) DECLSPEC_HIDDEN;
extern int CDECL virtual_handle_stack_fault( void *addr ) DECLSPEC_HIDDEN;
extern BOOL CDECL virtual_check_buffer_for_read( const void *ptr, SIZE_T size ) DECLSPEC_HIDDEN;
extern BOOL CDECL virtual_check_buffer_for_write( void *ptr, SIZE_T size ) DECLSPEC_HIDDEN;
extern SIZE_T CDECL virtual_uninterrupted_read_memory( const void *addr, void *buffer, SIZE_T size ) DECLSPEC_HIDDEN;
extern NTSTATUS CDECL virtual_uninterrupted_write_memory( void *addr, const void *buffer, SIZE_T size ) DECLSPEC_HIDDEN;
extern void CDECL virtual_set_force_exec( BOOL enable ) DECLSPEC_HIDDEN;
extern void CDECL virtual_release_address_space(void) DECLSPEC_HIDDEN;
extern void CDECL virtual_set_large_address_space(void) DECLSPEC_HIDDEN;
@ -97,11 +92,10 @@ extern NTSTATUS CDECL server_fd_to_handle( int fd, unsigned int access, unsigned
extern NTSTATUS CDECL server_handle_to_fd( HANDLE handle, unsigned int access, int *unix_fd,
unsigned int *options ) DECLSPEC_HIDDEN;
extern void CDECL server_release_fd( HANDLE handle, int unix_fd ) DECLSPEC_HIDDEN;
extern void CDECL server_init_process_done(void) DECLSPEC_HIDDEN;
extern void CDECL server_init_process_done( void *relay ) DECLSPEC_HIDDEN;
extern TEB * CDECL init_threading( int *nb_threads_ptr, struct ldt_copy **ldt_copy, SIZE_T *size,
BOOL *suspend, unsigned int *cpus, BOOL *wow64,
timeout_t *start_time ) DECLSPEC_HIDDEN;
extern void CDECL DECLSPEC_NORETURN start_process( PRTL_THREAD_START_ROUTINE entry, BOOL suspend, void *relay ) DECLSPEC_HIDDEN;
extern void CDECL DECLSPEC_NORETURN abort_thread( int status ) DECLSPEC_HIDDEN;
extern void CDECL DECLSPEC_NORETURN exit_thread( int status ) DECLSPEC_HIDDEN;
extern void CDECL DECLSPEC_NORETURN exit_process( int status ) DECLSPEC_HIDDEN;
@ -129,6 +123,7 @@ extern int server_pipe( int fd[2] ) DECLSPEC_HIDDEN;
extern NTSTATUS context_to_server( context_t *to, const CONTEXT *from ) DECLSPEC_HIDDEN;
extern NTSTATUS context_from_server( CONTEXT *to, const context_t *from ) DECLSPEC_HIDDEN;
extern void wait_suspend( CONTEXT *context ) DECLSPEC_HIDDEN;
extern NTSTATUS send_debug_event( EXCEPTION_RECORD *rec, CONTEXT *context, BOOL first_chance ) DECLSPEC_HIDDEN;
extern NTSTATUS set_thread_context( HANDLE handle, const context_t *context, BOOL *self ) DECLSPEC_HIDDEN;
extern NTSTATUS get_thread_context( HANDLE handle, context_t *context, unsigned int flags, BOOL *self ) DECLSPEC_HIDDEN;
extern unsigned int server_queue_process_apc( HANDLE process, const apc_call_t *call,
@ -141,11 +136,17 @@ extern TEB *virtual_alloc_first_teb(void) DECLSPEC_HIDDEN;
extern NTSTATUS virtual_alloc_teb( TEB **ret_teb ) DECLSPEC_HIDDEN;
extern void virtual_free_teb( TEB *teb ) DECLSPEC_HIDDEN;
extern void virtual_map_user_shared_data(void) DECLSPEC_HIDDEN;
extern NTSTATUS virtual_handle_fault( LPCVOID addr, DWORD err, BOOL on_signal_stack ) DECLSPEC_HIDDEN;
extern BOOL virtual_is_valid_code_address( const void *addr, SIZE_T size ) DECLSPEC_HIDDEN;
extern int virtual_handle_stack_fault( void *addr ) DECLSPEC_HIDDEN;
extern SIZE_T virtual_uninterrupted_read_memory( const void *addr, void *buffer, SIZE_T size ) DECLSPEC_HIDDEN;
extern NTSTATUS virtual_uninterrupted_write_memory( void *addr, const void *buffer, SIZE_T size ) DECLSPEC_HIDDEN;
extern void signal_init_threading(void) DECLSPEC_HIDDEN;
extern NTSTATUS signal_alloc_thread( TEB *teb ) DECLSPEC_HIDDEN;
extern void signal_free_thread( TEB *teb ) DECLSPEC_HIDDEN;
extern void signal_init_thread( TEB *teb ) DECLSPEC_HIDDEN;
extern void signal_init_process(void) DECLSPEC_HIDDEN;
extern void DECLSPEC_NORETURN signal_start_thread( PRTL_THREAD_START_ROUTINE entry, void *arg,
BOOL suspend, void *relay, TEB *teb ) DECLSPEC_HIDDEN;
extern void DECLSPEC_NORETURN signal_exit_thread( int status, void (*func)(int) ) DECLSPEC_HIDDEN;

10
dlls/ntdll/unix/virtual.c
View File

@ -2780,7 +2780,7 @@ void virtual_map_user_shared_data(void)
/***********************************************************************
* virtual_handle_fault
*/
NTSTATUS CDECL virtual_handle_fault( LPCVOID addr, DWORD err, BOOL on_signal_stack )
NTSTATUS virtual_handle_fault( LPCVOID addr, DWORD err, BOOL on_signal_stack )
{
NTSTATUS ret = STATUS_ACCESS_VIOLATION;
void *page = ROUND_ADDR( addr, page_mask );
@ -2947,7 +2947,7 @@ ssize_t CDECL virtual_locked_recvmsg( int fd, struct msghdr *hdr, int flags )
/***********************************************************************
* virtual_is_valid_code_address
*/
BOOL CDECL virtual_is_valid_code_address( const void *addr, SIZE_T size )
BOOL virtual_is_valid_code_address( const void *addr, SIZE_T size )
{
struct file_view *view;
BOOL ret = FALSE;
@ -2968,7 +2968,7 @@ BOOL CDECL virtual_is_valid_code_address( const void *addr, SIZE_T size )
* Return 1 if safely handled, -1 if handled into the overflow space.
* Called from inside a signal handler.
*/
int CDECL virtual_handle_stack_fault( void *addr )
int virtual_handle_stack_fault( void *addr )
{
int ret = 0;
@ -3076,7 +3076,7 @@ BOOL CDECL virtual_check_buffer_for_write( void *ptr, SIZE_T size )
* permissions are checked before accessing each page, to ensure that no
* exceptions can happen.
*/
SIZE_T CDECL virtual_uninterrupted_read_memory( const void *addr, void *buffer, SIZE_T size )
SIZE_T virtual_uninterrupted_read_memory( const void *addr, void *buffer, SIZE_T size )
{
struct file_view *view;
sigset_t sigset;
@ -3112,7 +3112,7 @@ SIZE_T CDECL virtual_uninterrupted_read_memory( const void *addr, void *buffer,
* permissions are checked before accessing each page, to ensure that no
* exceptions can happen.
*/
NTSTATUS CDECL virtual_uninterrupted_write_memory( void *addr, const void *buffer, SIZE_T size )
NTSTATUS virtual_uninterrupted_write_memory( void *addr, const void *buffer, SIZE_T size )
{
BOOL has_write_watch = FALSE;
sigset_t sigset;

10
dlls/ntdll/unixlib.h
View File

@ -28,7 +28,7 @@ struct ldt_copy;
struct msghdr;
/* increment this when you change the function table */
#define NTDLL_UNIXLIB_VERSION 32
#define NTDLL_UNIXLIB_VERSION 33
struct unix_funcs
{
@ -157,17 +157,12 @@ struct unix_funcs
void (CDECL *virtual_get_system_info)( SYSTEM_BASIC_INFORMATION *info );
NTSTATUS (CDECL *virtual_create_builtin_view)( void *module );
NTSTATUS (CDECL *virtual_alloc_thread_stack)( INITIAL_TEB *stack, SIZE_T reserve_size, SIZE_T commit_size, SIZE_T *pthread_size );
NTSTATUS (CDECL *virtual_handle_fault)( LPCVOID addr, DWORD err, BOOL on_signal_stack );
unsigned int (CDECL *virtual_locked_server_call)( void *req_ptr );
ssize_t (CDECL *virtual_locked_read)( int fd, void *addr, size_t size );
ssize_t (CDECL *virtual_locked_pread)( int fd, void *addr, size_t size, off_t offset );
ssize_t (CDECL *virtual_locked_recvmsg)( int fd, struct msghdr *hdr, int flags );
BOOL (CDECL *virtual_is_valid_code_address)( const void *addr, SIZE_T size );
int (CDECL *virtual_handle_stack_fault)( void *addr );
BOOL (CDECL *virtual_check_buffer_for_read)( const void *ptr, SIZE_T size );
BOOL (CDECL *virtual_check_buffer_for_write)( void *ptr, SIZE_T size );
SIZE_T (CDECL *virtual_uninterrupted_read_memory)( const void *addr, void *buffer, SIZE_T size );
NTSTATUS (CDECL *virtual_uninterrupted_write_memory)( void *addr, const void *buffer, SIZE_T size );
void (CDECL *virtual_set_force_exec)( BOOL enable );
void (CDECL *virtual_release_address_space)(void);
void (CDECL *virtual_set_large_address_space)(void);
@ -175,7 +170,6 @@ struct unix_funcs
/* thread/process functions */
TEB * (CDECL *init_threading)( int *nb_threads_ptr, struct ldt_copy **ldt_copy, SIZE_T *size,
BOOL *suspend, unsigned int *cpus, BOOL *wow64, timeout_t *start_time );
void (CDECL *start_process)( PRTL_THREAD_START_ROUTINE entry, BOOL suspend, void *relay );
void (CDECL *abort_thread)( int status );
void (CDECL *exit_thread)( int status );
void (CDECL *exit_process)( int status );
@ -196,7 +190,7 @@ struct unix_funcs
NTSTATUS (CDECL *server_handle_to_fd)( HANDLE handle, unsigned int access, int *unix_fd,
unsigned int *options );
void (CDECL *server_release_fd)( HANDLE handle, int unix_fd );
void (CDECL *server_init_process_done)(void);
void (CDECL *server_init_process_done)( void *relay );
/* debugging functions */
unsigned char (CDECL *dbg_get_channel_flags)( struct __wine_debug_channel *channel );

44
dlls/ntdll/virtual.c
View File

@ -31,47 +31,19 @@
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <signal.h>
#include <sys/types.h>
#ifdef HAVE_SYS_SOCKET_H
# include <sys/socket.h>
#endif
#ifdef HAVE_SYS_STAT_H
# include <sys/stat.h>
#endif
#ifdef HAVE_SYS_MMAN_H
# include <sys/mman.h>
#endif
#ifdef HAVE_SYS_SYSINFO_H
# include <sys/sysinfo.h>
#endif
#ifdef HAVE_VALGRIND_VALGRIND_H
# include <valgrind/valgrind.h>
#endif
#include "ntstatus.h"
#define WIN32_NO_STATUS
#define NONAMELESSUNION
#include "windef.h"
#include "winternl.h"
#include "wine/library.h"
#include "wine/server.h"
#include "wine/exception.h"
#include "wine/rbtree.h"
#include "wine/debug.h"
#include "ntdll_misc.h"
WINE_DEFAULT_DEBUG_CHANNEL(virtual);
static const UINT page_shift = 12;
static const UINT_PTR page_mask = 0xfff;
SIZE_T signal_stack_size = 0;
SIZE_T signal_stack_mask = 0;
static SIZE_T signal_stack_align;
#define ROUND_SIZE(addr,size) \
(((SIZE_T)(size) + ((UINT_PTR)(addr) & page_mask) + page_mask) & ~page_mask)
/**********************************************************************
* RtlCreateUserStack (NTDLL.@)
@ -111,20 +83,6 @@ void WINAPI RtlFreeUserStack( void *stack )
NtFreeVirtualMemory( NtCurrentProcess(), &stack, &size, MEM_RELEASE );
}
/***********************************************************************
* virtual_init
*/
void virtual_init(void)
{
size_t size = ROUND_SIZE( 0, sizeof(TEB) ) + max( MINSIGSTKSZ, 8192 );
/* find the first power of two not smaller than size */
signal_stack_align = page_shift;
while ((1u << signal_stack_align) < size) signal_stack_align++;
signal_stack_mask = (1 << signal_stack_align) - 1;
signal_stack_size = (1 << signal_stack_align) - ROUND_SIZE( 0, sizeof(TEB) );
}
/***********************************************************************
* __wine_locked_recvmsg
*/
@ -162,7 +120,7 @@ NTSTATUS WINAPI NtFreeVirtualMemory( HANDLE process, PVOID *addr_ptr, SIZE_T *si
NTSTATUS WINAPI DECLSPEC_HOTPATCH NtProtectVirtualMemory( HANDLE process, PVOID *addr_ptr, SIZE_T *size_ptr,
ULONG new_prot, ULONG *old_prot )
{
return unix_funcs-> NtProtectVirtualMemory( process, addr_ptr, size_ptr, new_prot, old_prot );
return unix_funcs->NtProtectVirtualMemory( process, addr_ptr, size_ptr, new_prot, old_prot );
}