999 lines
31 KiB
C
999 lines
31 KiB
C
/*
|
|
* ARM signal handling routines
|
|
*
|
|
* Copyright 2002 Marcus Meissner, SuSE Linux AG
|
|
* Copyright 2010, 2011 André Hentschel
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
|
|
*/
|
|
|
|
#ifdef __arm__
|
|
|
|
#include "config.h"
|
|
#include "wine/port.h"
|
|
|
|
#include <assert.h>
|
|
#include <signal.h>
|
|
#include <stdlib.h>
|
|
#include <stdarg.h>
|
|
#include <stdio.h>
|
|
#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
|
|
|
|
#include "ntstatus.h"
|
|
#define WIN32_NO_STATUS
|
|
#include "windef.h"
|
|
#include "winternl.h"
|
|
#include "wine/library.h"
|
|
#include "wine/exception.h"
|
|
#include "ntdll_misc.h"
|
|
#include "wine/debug.h"
|
|
#include "winnt.h"
|
|
|
|
WINE_DEFAULT_DEBUG_CHANNEL(seh);
|
|
|
|
static pthread_key_t teb_key;
|
|
|
|
/***********************************************************************
|
|
* signal context platform-specific definitions
|
|
*/
|
|
#ifdef linux
|
|
|
|
typedef ucontext_t SIGCONTEXT;
|
|
|
|
/* 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 FAULT_sig(context) REG_sig(fault_address, context)
|
|
# define TRAP_sig(context) REG_sig(trap_no, context)
|
|
|
|
#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 );
|
|
typedef int (*wine_signal_handler)(unsigned int sig);
|
|
|
|
static wine_signal_handler handlers[256];
|
|
|
|
/***********************************************************************
|
|
* dispatch_signal
|
|
*/
|
|
static inline int dispatch_signal(unsigned int sig)
|
|
{
|
|
if (handlers[sig] == NULL) return 0;
|
|
return handlers[sig](sig);
|
|
}
|
|
|
|
/*******************************************************************
|
|
* is_valid_frame
|
|
*/
|
|
static inline BOOL is_valid_frame( void *frame )
|
|
{
|
|
if ((ULONG_PTR)frame & 3) return FALSE;
|
|
return (frame >= NtCurrentTeb()->Tib.StackLimit &&
|
|
(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->Ip = IP_sig(sigcontext); /* Intra-Procedure-call scratch register */
|
|
context->Fp = FP_sig(sigcontext); /* Frame pointer */
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* 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 */
|
|
IP_sig(sigcontext) = context->Ip; /* Intra-Procedure-call scratch register */
|
|
FP_sig(sigcontext) = context->Fp; /* Frame pointer */
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* 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");
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* RtlCaptureContext (NTDLL.@)
|
|
*/
|
|
/* FIXME: Use the Stack instead of the actual register values */
|
|
__ASM_STDCALL_FUNC( RtlCaptureContext, 4,
|
|
".arm\n\t"
|
|
"stmfd SP!, {r1}\n\t"
|
|
"mov r1, #0x40\n\t" /* CONTEXT_ARM */
|
|
"add r1, r1, #0x3\n\t" /* CONTEXT_FULL */
|
|
"str r1, [r0]\n\t" /* context->ContextFlags */
|
|
"ldmfd SP!, {r1}\n\t"
|
|
"str r0, [r0, #0x4]\n\t" /* context->R0 */
|
|
"str r1, [r0, #0x8]\n\t" /* context->R1 */
|
|
"str r2, [r0, #0xc]\n\t" /* context->R2 */
|
|
"str r3, [r0, #0x10]\n\t" /* context->R3 */
|
|
"str r4, [r0, #0x14]\n\t" /* context->R4 */
|
|
"str r5, [r0, #0x18]\n\t" /* context->R5 */
|
|
"str r6, [r0, #0x1c]\n\t" /* context->R6 */
|
|
"str r7, [r0, #0x20]\n\t" /* context->R7 */
|
|
"str r8, [r0, #0x24]\n\t" /* context->R8 */
|
|
"str r9, [r0, #0x28]\n\t" /* context->R9 */
|
|
"str r10, [r0, #0x2c]\n\t" /* context->R10 */
|
|
"str r11, [r0, #0x30]\n\t" /* context->Fp */
|
|
"str IP, [r0, #0x34]\n\t" /* context->Ip */
|
|
"str SP, [r0, #0x38]\n\t" /* context->Sp */
|
|
"str LR, [r0, #0x3c]\n\t" /* context->Lr */
|
|
"str LR, [r0, #0x40]\n\t" /* context->Pc */
|
|
"mrs r1, CPSR\n\t"
|
|
"str r1, [r0, #0x44]\n\t" /* context->Cpsr */
|
|
"mov PC, LR\n"
|
|
)
|
|
|
|
|
|
/***********************************************************************
|
|
* set_cpu_context
|
|
*
|
|
* Set the new CPU context.
|
|
*/
|
|
/* FIXME: What about the CPSR? */
|
|
__ASM_GLOBAL_FUNC( set_cpu_context,
|
|
"mov IP, r0\n\t"
|
|
"ldr r0, [IP, #0x4]\n\t" /* context->R0 */
|
|
"ldr r1, [IP, #0x8]\n\t" /* context->R1 */
|
|
"ldr r2, [IP, #0xc]\n\t" /* context->R2 */
|
|
"ldr r3, [IP, #0x10]\n\t" /* context->R3 */
|
|
"ldr r4, [IP, #0x14]\n\t" /* context->R4 */
|
|
"ldr r5, [IP, #0x18]\n\t" /* context->R5 */
|
|
"ldr r6, [IP, #0x1c]\n\t" /* context->R6 */
|
|
"ldr r7, [IP, #0x20]\n\t" /* context->R7 */
|
|
"ldr r8, [IP, #0x24]\n\t" /* context->R8 */
|
|
"ldr r9, [IP, #0x28]\n\t" /* context->R9 */
|
|
"ldr r10, [IP, #0x2c]\n\t" /* context->R10 */
|
|
"ldr r11, [IP, #0x30]\n\t" /* context->Fp */
|
|
"ldr SP, [IP, #0x38]\n\t" /* context->Sp */
|
|
"ldr LR, [IP, #0x3c]\n\t" /* context->Lr */
|
|
"ldr PC, [IP, #0x40]\n\t" /* context->Pc */
|
|
)
|
|
|
|
|
|
/***********************************************************************
|
|
* copy_context
|
|
*
|
|
* Copy a register context according to the flags.
|
|
*/
|
|
void copy_context( CONTEXT *to, const CONTEXT *from, DWORD flags )
|
|
{
|
|
flags &= ~CONTEXT_ARM; /* get rid of CPU id */
|
|
if (flags & CONTEXT_CONTROL)
|
|
{
|
|
to->Sp = from->Sp;
|
|
to->Lr = from->Lr;
|
|
to->Pc = from->Pc;
|
|
to->Cpsr = from->Cpsr;
|
|
}
|
|
if (flags & CONTEXT_INTEGER)
|
|
{
|
|
to->R0 = from->R0;
|
|
to->R1 = from->R1;
|
|
to->R2 = from->R2;
|
|
to->R3 = from->R3;
|
|
to->R4 = from->R4;
|
|
to->R5 = from->R5;
|
|
to->R6 = from->R6;
|
|
to->R7 = from->R7;
|
|
to->R8 = from->R8;
|
|
to->R9 = from->R9;
|
|
to->R10 = from->R10;
|
|
to->Ip = from->Ip;
|
|
to->Fp = from->Fp;
|
|
}
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* context_to_server
|
|
*
|
|
* Convert a register context to the server format.
|
|
*/
|
|
NTSTATUS context_to_server( context_t *to, const CONTEXT *from )
|
|
{
|
|
DWORD flags = from->ContextFlags & ~CONTEXT_ARM; /* get rid of CPU id */
|
|
|
|
memset( to, 0, sizeof(*to) );
|
|
to->cpu = CPU_ARM;
|
|
|
|
if (flags & CONTEXT_CONTROL)
|
|
{
|
|
to->flags |= SERVER_CTX_CONTROL;
|
|
to->ctl.arm_regs.sp = from->Sp;
|
|
to->ctl.arm_regs.lr = from->Lr;
|
|
to->ctl.arm_regs.pc = from->Pc;
|
|
to->ctl.arm_regs.cpsr = from->Cpsr;
|
|
}
|
|
if (flags & CONTEXT_INTEGER)
|
|
{
|
|
to->flags |= SERVER_CTX_INTEGER;
|
|
to->integer.arm_regs.r[0] = from->R0;
|
|
to->integer.arm_regs.r[1] = from->R1;
|
|
to->integer.arm_regs.r[2] = from->R2;
|
|
to->integer.arm_regs.r[3] = from->R3;
|
|
to->integer.arm_regs.r[4] = from->R4;
|
|
to->integer.arm_regs.r[5] = from->R5;
|
|
to->integer.arm_regs.r[6] = from->R6;
|
|
to->integer.arm_regs.r[7] = from->R7;
|
|
to->integer.arm_regs.r[8] = from->R8;
|
|
to->integer.arm_regs.r[9] = from->R9;
|
|
to->integer.arm_regs.r[10] = from->R10;
|
|
to->integer.arm_regs.r[11] = from->Fp;
|
|
to->integer.arm_regs.r[12] = from->Ip;
|
|
}
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* context_from_server
|
|
*
|
|
* Convert a register context from the server format.
|
|
*/
|
|
NTSTATUS context_from_server( CONTEXT *to, const context_t *from )
|
|
{
|
|
if (from->cpu != CPU_ARM) return STATUS_INVALID_PARAMETER;
|
|
|
|
to->ContextFlags = CONTEXT_ARM;
|
|
if (from->flags & SERVER_CTX_CONTROL)
|
|
{
|
|
to->ContextFlags |= CONTEXT_CONTROL;
|
|
to->Sp = from->ctl.arm_regs.sp;
|
|
to->Lr = from->ctl.arm_regs.lr;
|
|
to->Pc = from->ctl.arm_regs.pc;
|
|
to->Cpsr = from->ctl.arm_regs.cpsr;
|
|
}
|
|
if (from->flags & SERVER_CTX_INTEGER)
|
|
{
|
|
to->ContextFlags |= CONTEXT_INTEGER;
|
|
to->R0 = from->integer.arm_regs.r[0];
|
|
to->R1 = from->integer.arm_regs.r[1];
|
|
to->R2 = from->integer.arm_regs.r[2];
|
|
to->R3 = from->integer.arm_regs.r[3];
|
|
to->R4 = from->integer.arm_regs.r[4];
|
|
to->R5 = from->integer.arm_regs.r[5];
|
|
to->R6 = from->integer.arm_regs.r[6];
|
|
to->R7 = from->integer.arm_regs.r[7];
|
|
to->R8 = from->integer.arm_regs.r[8];
|
|
to->R9 = from->integer.arm_regs.r[9];
|
|
to->R10 = from->integer.arm_regs.r[10];
|
|
to->Fp = from->integer.arm_regs.r[11];
|
|
to->Ip = from->integer.arm_regs.r[12];
|
|
}
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
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( SIGCONTEXT *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] )))
|
|
goto done;
|
|
}
|
|
break;
|
|
}
|
|
status = NtRaiseException( rec, context, TRUE );
|
|
if (status) raise_status( status, rec );
|
|
done:
|
|
set_cpu_context( context );
|
|
}
|
|
|
|
/**********************************************************************
|
|
* call_stack_handlers
|
|
*
|
|
* Call the stack handlers chain.
|
|
*/
|
|
static NTSTATUS call_stack_handlers( EXCEPTION_RECORD *rec, CONTEXT *context )
|
|
{
|
|
EXCEPTION_REGISTRATION_RECORD *frame, *dispatch, *nested_frame;
|
|
DWORD res;
|
|
|
|
frame = NtCurrentTeb()->Tib.ExceptionList;
|
|
nested_frame = NULL;
|
|
while (frame != (EXCEPTION_REGISTRATION_RECORD*)~0UL)
|
|
{
|
|
/* Check frame address */
|
|
if (!is_valid_frame( frame ))
|
|
{
|
|
rec->ExceptionFlags |= EH_STACK_INVALID;
|
|
break;
|
|
}
|
|
|
|
/* Call handler */
|
|
TRACE( "calling handler at %p code=%x flags=%x\n",
|
|
frame->Handler, rec->ExceptionCode, rec->ExceptionFlags );
|
|
res = frame->Handler( rec, frame, context, &dispatch );
|
|
TRACE( "handler at %p returned %x\n", frame->Handler, res );
|
|
|
|
if (frame == nested_frame)
|
|
{
|
|
/* no longer nested */
|
|
nested_frame = NULL;
|
|
rec->ExceptionFlags &= ~EH_NESTED_CALL;
|
|
}
|
|
|
|
switch(res)
|
|
{
|
|
case ExceptionContinueExecution:
|
|
if (!(rec->ExceptionFlags & EH_NONCONTINUABLE)) return STATUS_SUCCESS;
|
|
return STATUS_NONCONTINUABLE_EXCEPTION;
|
|
case ExceptionContinueSearch:
|
|
break;
|
|
case ExceptionNestedException:
|
|
if (nested_frame < dispatch) nested_frame = dispatch;
|
|
rec->ExceptionFlags |= EH_NESTED_CALL;
|
|
break;
|
|
default:
|
|
return STATUS_INVALID_DISPOSITION;
|
|
}
|
|
frame = frame->Prev;
|
|
}
|
|
return STATUS_UNHANDLED_EXCEPTION;
|
|
}
|
|
|
|
|
|
/*******************************************************************
|
|
* raise_exception
|
|
*
|
|
* Implementation of NtRaiseException.
|
|
*/
|
|
static NTSTATUS raise_exception( EXCEPTION_RECORD *rec, CONTEXT *context, BOOL first_chance )
|
|
{
|
|
NTSTATUS status;
|
|
|
|
if (first_chance)
|
|
{
|
|
DWORD c;
|
|
|
|
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(" Pc:%04x Sp:%04x Lr:%04x Cpsr:%04x r0:%04x r1:%04x r2:%04x r3:%04x\n",
|
|
context->Pc, context->Sp, context->Lr, context->Cpsr,
|
|
context->R0, context->R1, context->R2, context->R3);
|
|
TRACE(" r4:%04x r5:%04x r6:%04x r7:%04x r8:%04x r9:%04x r10:%04x Fp:%04x Ip:%04x\n",
|
|
context->R4, context->R5, context->R6, context->R7, context->R8,
|
|
context->R9, context->R10, context->Fp, context->Ip );
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* segv_handler
|
|
*
|
|
* Handler for SIGSEGV and related errors.
|
|
*/
|
|
static void segv_handler( int signal, siginfo_t *info, void *ucontext )
|
|
{
|
|
EXCEPTION_RECORD *rec;
|
|
SIGCONTEXT *context = ucontext;
|
|
|
|
/* check for page fault inside the thread stack */
|
|
if (TRAP_sig(context) == TRAP_ARM_PAGEFLT &&
|
|
(char *)info->si_addr >= (char *)NtCurrentTeb()->DeallocationStack &&
|
|
(char *)info->si_addr < (char *)NtCurrentTeb()->Tib.StackBase &&
|
|
virtual_handle_stack_fault( info->si_addr ))
|
|
{
|
|
/* check if this was the last guard page */
|
|
if ((char *)info->si_addr < (char *)NtCurrentTeb()->DeallocationStack + 2*4096)
|
|
{
|
|
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(TRAP_sig(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] = (ERROR_sig(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;
|
|
default:
|
|
ERR("Got unexpected trap %ld\n", TRAP_sig(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 )
|
|
{
|
|
if (!dispatch_signal(SIGINT))
|
|
{
|
|
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 )
|
|
{
|
|
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 );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* __wine_set_signal_handler (NTDLL.@)
|
|
*/
|
|
int CDECL __wine_set_signal_handler(unsigned int sig, wine_signal_handler wsh)
|
|
{
|
|
if (sig > sizeof(handlers) / sizeof(handlers[0])) return -1;
|
|
if (handlers[sig] != NULL) return -2;
|
|
handlers[sig] = wsh;
|
|
return 0;
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* signal_alloc_thread
|
|
*/
|
|
NTSTATUS signal_alloc_thread( TEB **teb )
|
|
{
|
|
static size_t sigstack_zero_bits;
|
|
SIZE_T size;
|
|
NTSTATUS status;
|
|
|
|
if (!sigstack_zero_bits)
|
|
{
|
|
size_t min_size = page_size;
|
|
/* find the first power of two not smaller than min_size */
|
|
while ((1u << sigstack_zero_bits) < min_size) sigstack_zero_bits++;
|
|
assert( sizeof(TEB) <= min_size );
|
|
}
|
|
|
|
size = 1 << sigstack_zero_bits;
|
|
*teb = NULL;
|
|
if (!(status = NtAllocateVirtualMemory( NtCurrentProcess(), (void **)teb, sigstack_zero_bits,
|
|
&size, MEM_COMMIT | MEM_TOP_DOWN, PAGE_READWRITE )))
|
|
{
|
|
(*teb)->Tib.Self = &(*teb)->Tib;
|
|
(*teb)->Tib.ExceptionList = (void *)~0UL;
|
|
}
|
|
return status;
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* signal_free_thread
|
|
*/
|
|
void signal_free_thread( TEB *teb )
|
|
{
|
|
SIZE_T size;
|
|
|
|
if (teb->DeallocationStack)
|
|
{
|
|
size = 0;
|
|
NtFreeVirtualMemory( GetCurrentProcess(), &teb->DeallocationStack, &size, MEM_RELEASE );
|
|
}
|
|
size = 0;
|
|
NtFreeVirtualMemory( NtCurrentProcess(), (void **)&teb, &size, MEM_RELEASE );
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* signal_init_thread
|
|
*/
|
|
void signal_init_thread( TEB *teb )
|
|
{
|
|
static int init_done;
|
|
|
|
if (!init_done)
|
|
{
|
|
pthread_key_create( &teb_key, NULL );
|
|
init_done = 1;
|
|
}
|
|
pthread_setspecific( teb_key, 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 = 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);
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* __wine_enter_vm86 (NTDLL.@)
|
|
*/
|
|
void __wine_enter_vm86( CONTEXT *context )
|
|
{
|
|
MESSAGE("vm86 mode not supported on this platform\n");
|
|
}
|
|
|
|
/***********************************************************************
|
|
* RtlUnwind (NTDLL.@)
|
|
*/
|
|
void WINAPI RtlUnwind( PVOID pEndFrame, PVOID targetIp, PEXCEPTION_RECORD pRecord, PVOID retval )
|
|
{
|
|
FIXME( "Not implemented on ARM\n" );
|
|
}
|
|
|
|
/*******************************************************************
|
|
* NtRaiseException (NTDLL.@)
|
|
*/
|
|
NTSTATUS WINAPI NtRaiseException( EXCEPTION_RECORD *rec, CONTEXT *context, BOOL first_chance )
|
|
{
|
|
NTSTATUS status = raise_exception( rec, context, first_chance );
|
|
if (status == STATUS_SUCCESS) NtSetContextThread( GetCurrentThread(), context );
|
|
return status;
|
|
}
|
|
|
|
/***********************************************************************
|
|
* RtlRaiseException (NTDLL.@)
|
|
*/
|
|
void WINAPI RtlRaiseException( EXCEPTION_RECORD *rec )
|
|
{
|
|
CONTEXT context;
|
|
NTSTATUS status;
|
|
|
|
RtlCaptureContext( &context );
|
|
rec->ExceptionAddress = (LPVOID)context.Pc;
|
|
status = raise_exception( rec, &context, TRUE );
|
|
if (status) raise_status( status, rec );
|
|
}
|
|
|
|
/*************************************************************************
|
|
* RtlCaptureStackBackTrace (NTDLL.@)
|
|
*/
|
|
USHORT WINAPI RtlCaptureStackBackTrace( ULONG skip, ULONG count, PVOID *buffer, ULONG *hash )
|
|
{
|
|
FIXME( "(%d, %d, %p, %p) stub!\n", skip, count, buffer, hash );
|
|
return 0;
|
|
}
|
|
|
|
/***********************************************************************
|
|
* call_thread_entry_point
|
|
*/
|
|
void call_thread_entry_point( LPTHREAD_START_ROUTINE entry, void *arg )
|
|
{
|
|
__TRY
|
|
{
|
|
exit_thread( entry( arg ));
|
|
}
|
|
__EXCEPT(unhandled_exception_filter)
|
|
{
|
|
NtTerminateThread( GetCurrentThread(), GetExceptionCode() );
|
|
}
|
|
__ENDTRY
|
|
abort(); /* should not be reached */
|
|
}
|
|
|
|
/***********************************************************************
|
|
* RtlExitUserThread (NTDLL.@)
|
|
*/
|
|
void WINAPI RtlExitUserThread( ULONG status )
|
|
{
|
|
exit_thread( status );
|
|
}
|
|
|
|
/***********************************************************************
|
|
* abort_thread
|
|
*/
|
|
void abort_thread( int status )
|
|
{
|
|
terminate_thread( status );
|
|
}
|
|
|
|
/**********************************************************************
|
|
* DbgBreakPoint (NTDLL.@)
|
|
*/
|
|
void WINAPI DbgBreakPoint(void)
|
|
{
|
|
kill(getpid(), SIGTRAP);
|
|
}
|
|
|
|
/**********************************************************************
|
|
* DbgUserBreakPoint (NTDLL.@)
|
|
*/
|
|
void WINAPI DbgUserBreakPoint(void)
|
|
{
|
|
kill(getpid(), SIGTRAP);
|
|
}
|
|
|
|
/**********************************************************************
|
|
* NtCurrentTeb (NTDLL.@)
|
|
*/
|
|
TEB * WINAPI NtCurrentTeb(void)
|
|
{
|
|
return pthread_getspecific( teb_key );
|
|
}
|
|
|
|
#endif /* __arm__ */
|