Sweden-Number/dlls/ntdll/unix/signal_arm64.c

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/*
* ARM64 signal handling routines
*
* Copyright 2010-2013 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
*/
#if 0
#pragma makedep unix
#endif
#ifdef __aarch64__
#include "config.h"
#include "wine/port.h"
#include <assert.h>
#include <pthread.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
#ifdef HAVE_SYS_UCONTEXT_H
# include <sys/ucontext.h>
#endif
#ifdef HAVE_LIBUNWIND
# define UNW_LOCAL_ONLY
# include <libunwind.h>
#endif
#define NONAMELESSUNION
#define NONAMELESSSTRUCT
#include "ntstatus.h"
#define WIN32_NO_STATUS
#include "windef.h"
#include "winnt.h"
#include "winternl.h"
#include "wine/exception.h"
#include "wine/asm.h"
#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;
}
#elif defined(__APPLE__)
/* All Registers access - only for local access */
# define REG_sig(reg_name, context) ((context)->uc_mcontext->__ss.__ ## reg_name)
# define REGn_sig(reg_num, context) ((context)->uc_mcontext->__ss.__x[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(cpsr, context) /* Current State Register */
# define FP_sig(context) REG_sig(fp, context) /* Frame pointer */
# define LR_sig(context) REG_sig(lr, context) /* Link Register */
static DWORD64 get_fault_esr( ucontext_t *sigcontext )
{
return sigcontext->uc_mcontext->__es.__esr;
}
#endif /* linux */
static pthread_key_t teb_key;
struct syscall_frame
{
ULONG64 x29;
ULONG64 thunk_addr;
ULONG64 x0, x1, x2, x3, x4, x5, x6, x7, x19, x20, x21, x22, x23, x24, x25, x26, x27, x28;
ULONG64 thunk_x29;
ULONG64 ret_addr;
};
struct arm64_thread_data
{
void *exit_frame; /* 02f0 exit frame pointer */
struct syscall_frame *syscall_frame; /* 02f8 frame pointer on syscall entry */
CONTEXT *context; /* 0300 context to set with SIGUSR2 */
};
C_ASSERT( sizeof(struct arm64_thread_data) <= sizeof(((struct ntdll_thread_data *)0)->cpu_data) );
C_ASSERT( offsetof( TEB, GdiTebBatch ) + offsetof( struct arm64_thread_data, exit_frame ) == 0x2f0 );
C_ASSERT( offsetof( TEB, GdiTebBatch ) + offsetof( struct arm64_thread_data, syscall_frame ) == 0x2f8 );
static inline struct arm64_thread_data *arm64_thread_data(void)
{
return (struct arm64_thread_data *)ntdll_get_thread_data()->cpu_data;
}
void *get_syscall_frame(void)
{
return arm64_thread_data()->syscall_frame;
}
void set_syscall_frame(void *frame)
{
arm64_thread_data()->syscall_frame = frame;
}
extern void raise_func_trampoline( EXCEPTION_RECORD *rec, CONTEXT *context, void *dispatcher );
/***********************************************************************
* unwind_builtin_dll
*
* Equivalent of RtlVirtualUnwind for builtin modules.
*/
NTSTATUS CDECL unwind_builtin_dll( ULONG type, DISPATCHER_CONTEXT *dispatch, CONTEXT *context )
{
#ifdef HAVE_LIBUNWIND
ULONG_PTR ip = context->Pc;
unw_context_t unw_context;
unw_cursor_t cursor;
unw_proc_info_t info;
int rc;
#ifdef __APPLE__
rc = unw_getcontext( &unw_context );
if (rc == UNW_ESUCCESS)
rc = unw_init_local( &cursor, &unw_context );
if (rc == UNW_ESUCCESS)
{
int i;
for (i = 0; i <= 28; i++)
unw_set_reg( &cursor, UNW_ARM64_X0 + i, context->u.X[i] );
unw_set_reg( &cursor, UNW_ARM64_FP, context->u.s.Fp );
unw_set_reg( &cursor, UNW_ARM64_LR, context->u.s.Lr );
unw_set_reg( &cursor, UNW_ARM64_SP, context->Sp );
unw_set_reg( &cursor, UNW_REG_IP, context->Pc );
}
#else
memcpy( unw_context.uc_mcontext.regs, context->u.X, sizeof(context->u.X) );
unw_context.uc_mcontext.sp = context->Sp;
unw_context.uc_mcontext.pc = context->Pc;
rc = unw_init_local( &cursor, &unw_context );
#endif
if (rc != UNW_ESUCCESS)
{
WARN( "setup failed: %d\n", rc );
return STATUS_INVALID_DISPOSITION;
}
rc = unw_get_proc_info( &cursor, &info );
if (rc != UNW_ESUCCESS && rc != -UNW_ENOINFO)
{
WARN( "failed to get info: %d\n", rc );
return STATUS_INVALID_DISPOSITION;
}
if (rc == -UNW_ENOINFO || ip < info.start_ip || ip > info.end_ip)
{
TRACE( "no info found for %lx ip %lx-%lx, assuming leaf function\n",
ip, info.start_ip, info.end_ip );
dispatch->LanguageHandler = NULL;
dispatch->EstablisherFrame = context->Sp;
context->Pc = context->u.s.Lr;
context->Sp = context->Sp + sizeof(ULONG64);
context->ContextFlags |= CONTEXT_UNWOUND_TO_CALL;
return STATUS_SUCCESS;
}
TRACE( "ip %#lx function %#lx-%#lx personality %#lx lsda %#lx fde %#lx\n",
ip, (unsigned long)info.start_ip, (unsigned long)info.end_ip, (unsigned long)info.handler,
(unsigned long)info.lsda, (unsigned long)info.unwind_info );
rc = unw_step( &cursor );
if (rc < 0)
{
WARN( "failed to unwind: %d %d\n", rc, UNW_ENOINFO );
return STATUS_INVALID_DISPOSITION;
}
dispatch->LanguageHandler = (void *)info.handler;
dispatch->HandlerData = (void *)info.lsda;
dispatch->EstablisherFrame = context->Sp;
#ifdef __APPLE__
{
int i;
for (i = 0; i <= 28; i++)
unw_get_reg( &cursor, UNW_ARM64_X0 + i, (unw_word_t *)&context->u.X[i] );
}
unw_get_reg( &cursor, UNW_ARM64_FP, (unw_word_t *)&context->u.s.Fp );
unw_get_reg( &cursor, UNW_ARM64_X30, (unw_word_t *)&context->u.s.Lr );
unw_get_reg( &cursor, UNW_ARM64_SP, (unw_word_t *)&context->Sp );
#else
unw_get_reg( &cursor, UNW_AARCH64_X0, (unw_word_t *)&context->u.s.X0 );
unw_get_reg( &cursor, UNW_AARCH64_X1, (unw_word_t *)&context->u.s.X1 );
unw_get_reg( &cursor, UNW_AARCH64_X2, (unw_word_t *)&context->u.s.X2 );
unw_get_reg( &cursor, UNW_AARCH64_X3, (unw_word_t *)&context->u.s.X3 );
unw_get_reg( &cursor, UNW_AARCH64_X4, (unw_word_t *)&context->u.s.X4 );
unw_get_reg( &cursor, UNW_AARCH64_X5, (unw_word_t *)&context->u.s.X5 );
unw_get_reg( &cursor, UNW_AARCH64_X6, (unw_word_t *)&context->u.s.X6 );
unw_get_reg( &cursor, UNW_AARCH64_X7, (unw_word_t *)&context->u.s.X7 );
unw_get_reg( &cursor, UNW_AARCH64_X8, (unw_word_t *)&context->u.s.X8 );
unw_get_reg( &cursor, UNW_AARCH64_X9, (unw_word_t *)&context->u.s.X9 );
unw_get_reg( &cursor, UNW_AARCH64_X10, (unw_word_t *)&context->u.s.X10 );
unw_get_reg( &cursor, UNW_AARCH64_X11, (unw_word_t *)&context->u.s.X11 );
unw_get_reg( &cursor, UNW_AARCH64_X12, (unw_word_t *)&context->u.s.X12 );
unw_get_reg( &cursor, UNW_AARCH64_X13, (unw_word_t *)&context->u.s.X13 );
unw_get_reg( &cursor, UNW_AARCH64_X14, (unw_word_t *)&context->u.s.X14 );
unw_get_reg( &cursor, UNW_AARCH64_X15, (unw_word_t *)&context->u.s.X15 );
unw_get_reg( &cursor, UNW_AARCH64_X16, (unw_word_t *)&context->u.s.X16 );
unw_get_reg( &cursor, UNW_AARCH64_X17, (unw_word_t *)&context->u.s.X17 );
unw_get_reg( &cursor, UNW_AARCH64_X18, (unw_word_t *)&context->u.s.X18 );
unw_get_reg( &cursor, UNW_AARCH64_X19, (unw_word_t *)&context->u.s.X19 );
unw_get_reg( &cursor, UNW_AARCH64_X20, (unw_word_t *)&context->u.s.X20 );
unw_get_reg( &cursor, UNW_AARCH64_X21, (unw_word_t *)&context->u.s.X21 );
unw_get_reg( &cursor, UNW_AARCH64_X22, (unw_word_t *)&context->u.s.X22 );
unw_get_reg( &cursor, UNW_AARCH64_X23, (unw_word_t *)&context->u.s.X23 );
unw_get_reg( &cursor, UNW_AARCH64_X24, (unw_word_t *)&context->u.s.X24 );
unw_get_reg( &cursor, UNW_AARCH64_X25, (unw_word_t *)&context->u.s.X25 );
unw_get_reg( &cursor, UNW_AARCH64_X26, (unw_word_t *)&context->u.s.X26 );
unw_get_reg( &cursor, UNW_AARCH64_X27, (unw_word_t *)&context->u.s.X27 );
unw_get_reg( &cursor, UNW_AARCH64_X28, (unw_word_t *)&context->u.s.X28 );
unw_get_reg( &cursor, UNW_AARCH64_X29, (unw_word_t *)&context->u.s.Fp );
unw_get_reg( &cursor, UNW_AARCH64_X30, (unw_word_t *)&context->u.s.Lr );
unw_get_reg( &cursor, UNW_AARCH64_SP, (unw_word_t *)&context->Sp );
#endif
unw_get_reg( &cursor, UNW_REG_IP, (unw_word_t *)&context->Pc );
context->ContextFlags |= CONTEXT_UNWOUND_TO_CALL;
if (info.start_ip == (unw_word_t)raise_func_trampoline) {
/* raise_func_trampoline has a full CONTEXT stored on the stack;
* restore the original Lr value from there. The function we unwind
* to might be a leaf function that hasn't backed up its own original
* Lr value on the stack.
* We could also just restore the full context here without doing
* unw_step at all. */
const CONTEXT *next_ctx = (const CONTEXT *) dispatch->EstablisherFrame;
context->u.s.Lr = next_ctx->u.s.Lr;
}
TRACE( "next function pc=%016lx%s\n", context->Pc, rc ? "" : " (last frame)" );
TRACE(" x0=%016lx x1=%016lx x2=%016lx x3=%016lx\n",
context->u.s.X0, context->u.s.X1, context->u.s.X2, context->u.s.X3 );
TRACE(" x4=%016lx x5=%016lx x6=%016lx x7=%016lx\n",
context->u.s.X4, context->u.s.X5, context->u.s.X6, context->u.s.X7 );
TRACE(" x8=%016lx x9=%016lx x10=%016lx x11=%016lx\n",
context->u.s.X8, context->u.s.X9, context->u.s.X10, context->u.s.X11 );
TRACE(" x12=%016lx x13=%016lx x14=%016lx x15=%016lx\n",
context->u.s.X12, context->u.s.X13, context->u.s.X14, context->u.s.X15 );
TRACE(" x16=%016lx x17=%016lx x18=%016lx x19=%016lx\n",
context->u.s.X16, context->u.s.X17, context->u.s.X18, context->u.s.X19 );
TRACE(" x20=%016lx x21=%016lx x22=%016lx x23=%016lx\n",
context->u.s.X20, context->u.s.X21, context->u.s.X22, context->u.s.X23 );
TRACE(" x24=%016lx x25=%016lx x26=%016lx x27=%016lx\n",
context->u.s.X24, context->u.s.X25, context->u.s.X26, context->u.s.X27 );
TRACE(" x28=%016lx fp=%016lx lr=%016lx sp=%016lx\n",
context->u.s.X28, context->u.s.Fp, context->u.s.Lr, context->Sp );
return STATUS_SUCCESS;
#else
return STATUS_INVALID_DISPOSITION;
#endif
}
/***********************************************************************
* 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_FLOATING_POINT) |
CONTEXT_ARM64;
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 )
{
#ifdef linux
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) );
#elif defined(__APPLE__)
context->ContextFlags |= CONTEXT_FLOATING_POINT;
context->Fpcr = sigcontext->uc_mcontext->__ns.__fpcr;
context->Fpsr = sigcontext->uc_mcontext->__ns.__fpsr;
memcpy( context->V, sigcontext->uc_mcontext->__ns.__v, sizeof(context->V) );
#endif
}
/***********************************************************************
* restore_fpu
*
* Restore the FPU context to a sigcontext.
*/
static void restore_fpu( CONTEXT *context, ucontext_t *sigcontext )
{
#ifdef linux
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) );
#elif defined(__APPLE__)
sigcontext->uc_mcontext->__ns.__fpcr = context->Fpcr;
sigcontext->uc_mcontext->__ns.__fpsr = context->Fpsr;
memcpy( sigcontext->uc_mcontext->__ns.__v, context->V, sizeof(context->V) );
#endif
}
/***********************************************************************
* get_server_context_flags
*
* Convert CPU-specific flags to generic server flags
*/
static unsigned int get_server_context_flags( DWORD flags )
{
unsigned int ret = 0;
flags &= ~CONTEXT_ARM64; /* get rid of CPU id */
if (flags & CONTEXT_CONTROL) ret |= SERVER_CTX_CONTROL;
if (flags & CONTEXT_INTEGER) ret |= SERVER_CTX_INTEGER;
if (flags & CONTEXT_FLOATING_POINT) ret |= SERVER_CTX_FLOATING_POINT;
if (flags & CONTEXT_DEBUG_REGISTERS) ret |= SERVER_CTX_DEBUG_REGISTERS;
return ret;
}
/***********************************************************************
* context_to_server
*
* Convert a register context to the server format.
*/
NTSTATUS context_to_server( context_t *to, const CONTEXT *from )
{
DWORD i, flags = from->ContextFlags & ~CONTEXT_ARM64; /* get rid of CPU id */
memset( to, 0, sizeof(*to) );
to->cpu = CPU_ARM64;
if (flags & CONTEXT_CONTROL)
{
to->flags |= SERVER_CTX_CONTROL;
to->integer.arm64_regs.x[29] = from->u.s.Fp;
to->integer.arm64_regs.x[30] = from->u.s.Lr;
to->ctl.arm64_regs.sp = from->Sp;
to->ctl.arm64_regs.pc = from->Pc;
to->ctl.arm64_regs.pstate = from->Cpsr;
}
if (flags & CONTEXT_INTEGER)
{
to->flags |= SERVER_CTX_INTEGER;
for (i = 0; i <= 28; i++) to->integer.arm64_regs.x[i] = from->u.X[i];
}
if (flags & CONTEXT_FLOATING_POINT)
{
to->flags |= SERVER_CTX_FLOATING_POINT;
for (i = 0; i < 32; i++)
{
to->fp.arm64_regs.q[i].low = from->V[i].s.Low;
to->fp.arm64_regs.q[i].high = from->V[i].s.High;
}
to->fp.arm64_regs.fpcr = from->Fpcr;
to->fp.arm64_regs.fpsr = from->Fpsr;
}
if (flags & CONTEXT_DEBUG_REGISTERS)
{
to->flags |= SERVER_CTX_DEBUG_REGISTERS;
for (i = 0; i < ARM64_MAX_BREAKPOINTS; i++) to->debug.arm64_regs.bcr[i] = from->Bcr[i];
for (i = 0; i < ARM64_MAX_BREAKPOINTS; i++) to->debug.arm64_regs.bvr[i] = from->Bvr[i];
for (i = 0; i < ARM64_MAX_WATCHPOINTS; i++) to->debug.arm64_regs.wcr[i] = from->Wcr[i];
for (i = 0; i < ARM64_MAX_WATCHPOINTS; i++) to->debug.arm64_regs.wvr[i] = from->Wvr[i];
}
return STATUS_SUCCESS;
}
/***********************************************************************
* context_from_server
*
* Convert a register context from the server format.
*/
NTSTATUS context_from_server( CONTEXT *to, const context_t *from )
{
DWORD i;
if (from->cpu != CPU_ARM64) return STATUS_INVALID_PARAMETER;
to->ContextFlags = CONTEXT_ARM64;
if (from->flags & SERVER_CTX_CONTROL)
{
to->ContextFlags |= CONTEXT_CONTROL;
to->u.s.Fp = from->integer.arm64_regs.x[29];
to->u.s.Lr = from->integer.arm64_regs.x[30];
to->Sp = from->ctl.arm64_regs.sp;
to->Pc = from->ctl.arm64_regs.pc;
to->Cpsr = from->ctl.arm64_regs.pstate;
}
if (from->flags & SERVER_CTX_INTEGER)
{
to->ContextFlags |= CONTEXT_INTEGER;
for (i = 0; i <= 28; i++) to->u.X[i] = from->integer.arm64_regs.x[i];
}
if (from->flags & SERVER_CTX_FLOATING_POINT)
{
to->ContextFlags |= CONTEXT_FLOATING_POINT;
for (i = 0; i < 32; i++)
{
to->V[i].s.Low = from->fp.arm64_regs.q[i].low;
to->V[i].s.High = from->fp.arm64_regs.q[i].high;
}
to->Fpcr = from->fp.arm64_regs.fpcr;
to->Fpsr = from->fp.arm64_regs.fpsr;
}
if (from->flags & SERVER_CTX_DEBUG_REGISTERS)
{
to->ContextFlags |= CONTEXT_DEBUG_REGISTERS;
for (i = 0; i < ARM64_MAX_BREAKPOINTS; i++) to->Bcr[i] = from->debug.arm64_regs.bcr[i];
for (i = 0; i < ARM64_MAX_BREAKPOINTS; i++) to->Bvr[i] = from->debug.arm64_regs.bvr[i];
for (i = 0; i < ARM64_MAX_WATCHPOINTS; i++) to->Wcr[i] = from->debug.arm64_regs.wcr[i];
for (i = 0; i < ARM64_MAX_WATCHPOINTS; i++) to->Wvr[i] = from->debug.arm64_regs.wvr[i];
}
return STATUS_SUCCESS;
}
/***********************************************************************
* NtSetContextThread (NTDLL.@)
* ZwSetContextThread (NTDLL.@)
*/
NTSTATUS WINAPI NtSetContextThread( HANDLE handle, const CONTEXT *context )
{
NTSTATUS ret = STATUS_SUCCESS;
BOOL self = (handle == GetCurrentThread());
if (self && (context->ContextFlags & (CONTEXT_DEBUG_REGISTERS & ~CONTEXT_ARM64))) self = FALSE;
if (!self)
{
context_t server_context;
context_to_server( &server_context, context );
ret = set_thread_context( handle, &server_context, &self );
}
if (self && ret == STATUS_SUCCESS)
{
arm64_thread_data()->syscall_frame = NULL;
InterlockedExchangePointer( (void **)&arm64_thread_data()->context, (void *)context );
raise( SIGUSR2 );
}
return ret;
}
/***********************************************************************
* NtGetContextThread (NTDLL.@)
* ZwGetContextThread (NTDLL.@)
*/
NTSTATUS WINAPI NtGetContextThread( HANDLE handle, CONTEXT *context )
{
NTSTATUS ret;
struct syscall_frame *frame = arm64_thread_data()->syscall_frame;
DWORD needed_flags = context->ContextFlags & ~CONTEXT_ARM64;
BOOL self = (handle == GetCurrentThread());
if (!self)
{
context_t server_context;
unsigned int server_flags = get_server_context_flags( context->ContextFlags );
if ((ret = get_thread_context( handle, &server_context, server_flags, &self ))) return ret;
if ((ret = context_from_server( context, &server_context ))) return ret;
needed_flags &= ~context->ContextFlags;
}
if (self)
{
if (needed_flags & CONTEXT_INTEGER)
{
memset( context->u.X, 0, sizeof(context->u.X[0]) * 18 );
context->u.X[18] = (DWORD64)NtCurrentTeb();
memcpy( context->u.X + 19, &frame->x19, sizeof(context->u.X[0]) * 10 );
context->ContextFlags |= CONTEXT_INTEGER;
}
if (needed_flags & CONTEXT_CONTROL)
{
context->u.s.Fp = frame->x29;
context->u.s.Lr = frame->ret_addr;
context->Sp = (ULONG64)&frame->thunk_x29;
context->Pc = frame->thunk_addr;
context->Cpsr = 0;
context->ContextFlags |= CONTEXT_CONTROL;
}
if (needed_flags & CONTEXT_FLOATING_POINT) FIXME( "floating point not supported\n" );
if (needed_flags & CONTEXT_DEBUG_REGISTERS) FIXME( "debug registers not supported\n" );
}
return STATUS_SUCCESS;
}
/* Note, unwind_builtin_dll above has hardcoded assumptions on how this
* function stores things on the stack; if modified, modify that one in
* sync as well. */
__ASM_GLOBAL_FUNC( raise_func_trampoline,
"stp x29, x30, [sp, #-0x30]!\n\t"
__ASM_CFI(".cfi_def_cfa_offset 48\n\t")
__ASM_CFI(".cfi_offset 29, -48\n\t")
__ASM_CFI(".cfi_offset 30, -40\n\t")
"stp x0, x1, [sp, #0x10]\n\t"
"str x2, [sp, #0x20]\n\t"
"mov x29, sp\n\t"
__ASM_CFI(".cfi_def_cfa_register 29\n\t")
__ASM_CFI(".cfi_remember_state\n\t")
/* Memcpy the context onto the stack */
"sub sp, sp, #0x390\n\t"
"mov x0, sp\n\t"
"mov x2, #0x390\n\t"
"bl " __ASM_NAME("memcpy") "\n\t"
__ASM_CFI(".cfi_def_cfa 31, 0\n\t")
__ASM_CFI(".cfi_escape 0x0f,0x04,0x8f,0x80,0x02,0x06\n\t") /* CFA, DW_OP_breg31 + 0x100, DW_OP_deref */
__ASM_CFI(".cfi_escape 0x10,0x13,0x03,0x8f,0xa0,0x01\n\t") /* x19, DW_OP_breg31 + 0xA0 */
__ASM_CFI(".cfi_escape 0x10,0x14,0x03,0x8f,0xa8,0x01\n\t") /* x20 */
__ASM_CFI(".cfi_escape 0x10,0x15,0x03,0x8f,0xb0,0x01\n\t") /* x21 */
__ASM_CFI(".cfi_escape 0x10,0x16,0x03,0x8f,0xb8,0x01\n\t") /* x22 */
__ASM_CFI(".cfi_escape 0x10,0x17,0x03,0x8f,0xc0,0x01\n\t") /* x23 */
__ASM_CFI(".cfi_escape 0x10,0x18,0x03,0x8f,0xc8,0x01\n\t") /* x24 */
__ASM_CFI(".cfi_escape 0x10,0x19,0x03,0x8f,0xd0,0x01\n\t") /* x25 */
__ASM_CFI(".cfi_escape 0x10,0x1a,0x03,0x8f,0xd8,0x01\n\t") /* x26 */
__ASM_CFI(".cfi_escape 0x10,0x1b,0x03,0x8f,0xe0,0x01\n\t") /* x27 */
__ASM_CFI(".cfi_escape 0x10,0x1c,0x03,0x8f,0xe8,0x01\n\t") /* x28 */
__ASM_CFI(".cfi_escape 0x10,0x1d,0x03,0x8f,0xf0,0x01\n\t") /* x29 */
__ASM_CFI(".cfi_escape 0x10,0x1e,0x03,0x8f,0x88,0x02\n\t") /* x30 = pc */
__ASM_CFI(".cfi_escape 0x10,0x48,0x03,0x8f,0x90,0x03\n\t") /* d8 */
__ASM_CFI(".cfi_escape 0x10,0x49,0x03,0x8f,0x98,0x03\n\t") /* d9 */
__ASM_CFI(".cfi_escape 0x10,0x4a,0x03,0x8f,0xa0,0x03\n\t") /* d10 */
__ASM_CFI(".cfi_escape 0x10,0x4b,0x03,0x8f,0xa8,0x03\n\t") /* d11 */
__ASM_CFI(".cfi_escape 0x10,0x4c,0x03,0x8f,0xb0,0x03\n\t") /* d12 */
__ASM_CFI(".cfi_escape 0x10,0x4d,0x03,0x8f,0xb8,0x03\n\t") /* d13 */
__ASM_CFI(".cfi_escape 0x10,0x4e,0x03,0x8f,0xc0,0x03\n\t") /* d14 */
__ASM_CFI(".cfi_escape 0x10,0x4f,0x03,0x8f,0xc8,0x03\n\t") /* d15 */
"ldp x0, x1, [x29, #0x10]\n\t"
"ldr x2, [x29, #0x20]\n\t"
"blr x2\n\t"
__ASM_CFI(".cfi_restore_state\n\t")
"brk #1")
/***********************************************************************
* setup_exception
*
* Modify the signal context to call the exception raise function.
*/
static void setup_exception( ucontext_t *sigcontext, EXCEPTION_RECORD *rec )
{
struct
{
CONTEXT context;
EXCEPTION_RECORD rec;
void *redzone[3];
} *stack;
void *stack_ptr = (void *)(SP_sig(sigcontext) & ~15);
CONTEXT context;
NTSTATUS status;
rec->ExceptionAddress = (void *)PC_sig(sigcontext);
save_context( &context, sigcontext );
save_fpu( &context, sigcontext );
if (rec->ExceptionCode == EXCEPTION_BREAKPOINT) context.Pc += 4;
status = send_debug_event( rec, &context, TRUE );
if (status == DBG_CONTINUE || status == DBG_EXCEPTION_HANDLED)
{
restore_context( &context, sigcontext );
return;
}
stack = virtual_setup_exception( stack_ptr, (sizeof(*stack) + 15) & ~15, rec );
stack->rec = *rec;
stack->context = context;
SP_sig(sigcontext) = (ULONG_PTR)stack;
LR_sig(sigcontext) = PC_sig(sigcontext);
PC_sig(sigcontext) = (ULONG_PTR)raise_func_trampoline;
REGn_sig(0, sigcontext) = (ULONG_PTR)&stack->rec; /* first arg for KiUserExceptionDispatcher */
REGn_sig(1, sigcontext) = (ULONG_PTR)&stack->context; /* second arg for KiUserExceptionDispatcher */
REGn_sig(2, sigcontext) = (ULONG_PTR)pKiUserExceptionDispatcher; /* dispatcher arg for raise_func_trampoline */
REGn_sig(18, sigcontext) = (ULONG_PTR)NtCurrentTeb();
}
/***********************************************************************
* call_user_apc_dispatcher
*/
__ASM_GLOBAL_FUNC( call_user_apc_dispatcher,
"mov x19, x0\n\t" /* context */
"mov x20, x1\n\t" /* ctx */
"mov x21, x2\n\t" /* arg1 */
"mov x22, x3\n\t" /* arg2 */
"mov x23, x4\n\t" /* func */
"mov x24, x5\n\t" /* dispatcher */
"bl " __ASM_NAME("NtCurrentTeb") "\n\t"
"add x25, x0, #0x2f8\n\t" /* arm64_thread_data()->syscall_frame */
"cbz x19, 1f\n\t"
"ldr x0, [x19, #0x100]\n\t" /* context.Sp */
"sub x0, x0, #0x430\n\t" /* sizeof(CONTEXT) + offsetof(frame,thunk_x29) */
"str xzr, [x25]\n\t"
"mov sp, x0\n\t"
"b 2f\n"
"1:\tldr x0, [x25]\n\t"
"sub sp, x0, #0x390\n\t"
"mov w2, #0x400000\n\t" /* context.ContextFlags = CONTEXT_FULL */
"movk w2, #7\n\t"
"str w2, [sp]\n\t"
"mov x1, sp\n\t"
"mov x0, #~1\n\t"
"bl " __ASM_NAME("NtGetContextThread") "\n\t"
"mov w2, #0xc0\n\t" /* context.X0 = STATUS_USER_APC */
"str x2, [sp, #8]\n\t"
"str xzr, [x25]\n\t"
"mov x0, sp\n" /* context */
"2:\tldr lr, [x0, #0xf8]\n\t" /* context.Lr */
"mov x1, x20\n\t" /* ctx */
"mov x2, x21\n\t" /* arg1 */
"mov x3, x22\n\t" /* arg2 */
"mov x4, x23\n\t" /* func */
"br x24" )
/***********************************************************************
* call_raise_user_exception_dispatcher
*/
__ASM_GLOBAL_FUNC( call_raise_user_exception_dispatcher,
"mov x2, x0\n\t" /* dispatcher */
"b " __ASM_NAME("call_user_exception_dispatcher") )
/***********************************************************************
* call_user_exception_dispatcher
*/
__ASM_GLOBAL_FUNC( call_user_exception_dispatcher,
"mov x19, x0\n\t"
"mov x20, x1\n\t"
"mov x21, x2\n\t"
"bl " __ASM_NAME("NtCurrentTeb") "\n\t"
"add x4, x0, #0x2f8\n\t" /* arm64_thread_data()->syscall_frame */
"ldr x5, [x4]\n\t"
"str xzr, [x4]\n\t"
"mov x0, x19\n\t"
"mov x1, x20\n\t"
"mov x2, x21\n\t"
"ldp x19, x20, [x5, #80]\n\t" /* frame->x19,x20 */
"ldp x21, x22, [x5, #96]\n\t" /* frame->x21,x22 */
"ldp x23, x24, [x5, #112]\n\t" /* frame->x23,x24 */
"ldp x25, x26, [x5, #128]\n\t" /* frame->x25,x26 */
"ldp x27, x28, [x5, #144]\n\t" /* frame->x27,x28 */
"ldp x29, x30, [x5, #160]\n\t" /* frame->thunk_x29,ret_addr */
"add sp, x5, #176\n\t"
"br x2" )
/***********************************************************************
* handle_syscall_fault
*
* Handle a page fault happening during a system call.
*/
static BOOL handle_syscall_fault( ucontext_t *context, EXCEPTION_RECORD *rec )
{
struct syscall_frame *frame = arm64_thread_data()->syscall_frame;
__WINE_FRAME *wine_frame = (__WINE_FRAME *)NtCurrentTeb()->Tib.ExceptionList;
DWORD i;
if (!frame) return FALSE;
TRACE( "code=%x flags=%x addr=%p pc=%p tid=%04x\n",
rec->ExceptionCode, rec->ExceptionFlags, rec->ExceptionAddress,
(void *)PC_sig(context), GetCurrentThreadId() );
for (i = 0; i < rec->NumberParameters; i++)
TRACE( " info[%d]=%016lx\n", i, rec->ExceptionInformation[i] );
TRACE(" x0=%016lx x1=%016lx x2=%016lx x3=%016lx\n",
(DWORD64)REGn_sig(0, context), (DWORD64)REGn_sig(1, context),
(DWORD64)REGn_sig(2, context), (DWORD64)REGn_sig(3, context) );
TRACE(" x4=%016lx x5=%016lx x6=%016lx x7=%016lx\n",
(DWORD64)REGn_sig(4, context), (DWORD64)REGn_sig(5, context),
(DWORD64)REGn_sig(6, context), (DWORD64)REGn_sig(7, context) );
TRACE(" x8=%016lx x9=%016lx x10=%016lx x11=%016lx\n",
(DWORD64)REGn_sig(8, context), (DWORD64)REGn_sig(9, context),
(DWORD64)REGn_sig(10, context), (DWORD64)REGn_sig(11, context) );
TRACE(" x12=%016lx x13=%016lx x14=%016lx x15=%016lx\n",
(DWORD64)REGn_sig(12, context), (DWORD64)REGn_sig(13, context),
(DWORD64)REGn_sig(14, context), (DWORD64)REGn_sig(15, context) );
TRACE(" x16=%016lx x17=%016lx x18=%016lx x19=%016lx\n",
(DWORD64)REGn_sig(16, context), (DWORD64)REGn_sig(17, context),
(DWORD64)REGn_sig(18, context), (DWORD64)REGn_sig(19, context) );
TRACE(" x20=%016lx x21=%016lx x22=%016lx x23=%016lx\n",
(DWORD64)REGn_sig(20, context), (DWORD64)REGn_sig(21, context),
(DWORD64)REGn_sig(22, context), (DWORD64)REGn_sig(23, context) );
TRACE(" x24=%016lx x25=%016lx x26=%016lx x27=%016lx\n",
(DWORD64)REGn_sig(24, context), (DWORD64)REGn_sig(25, context),
(DWORD64)REGn_sig(26, context), (DWORD64)REGn_sig(27, context) );
TRACE(" x28=%016lx fp=%016lx lr=%016lx sp=%016lx\n",
(DWORD64)REGn_sig(28, context), (DWORD64)FP_sig(context),
(DWORD64)LR_sig(context), (DWORD64)SP_sig(context) );
if ((char *)wine_frame < (char *)frame)
{
TRACE( "returning to handler\n" );
REGn_sig(0, context) = (ULONG_PTR)&wine_frame->jmp;
REGn_sig(1, context) = 1;
PC_sig(context) = (ULONG_PTR)__wine_longjmp;
}
else
{
TRACE( "returning to user mode ip=%p ret=%08x\n", (void *)frame->ret_addr, rec->ExceptionCode );
REGn_sig(0, context) = rec->ExceptionCode;
REGn_sig(19, context) = frame->x19;
REGn_sig(20, context) = frame->x20;
REGn_sig(21, context) = frame->x21;
REGn_sig(22, context) = frame->x22;
REGn_sig(23, context) = frame->x23;
REGn_sig(24, context) = frame->x24;
REGn_sig(25, context) = frame->x25;
REGn_sig(26, context) = frame->x26;
REGn_sig(27, context) = frame->x27;
REGn_sig(28, context) = frame->x28;
FP_sig(context) = frame->x29;
LR_sig(context) = frame->ret_addr;
SP_sig(context) = (ULONG64)&frame->thunk_x29;
PC_sig(context) = frame->thunk_addr;
arm64_thread_data()->syscall_frame = NULL;
}
return TRUE;
}
/**********************************************************************
* segv_handler
*
* Handler for SIGSEGV.
*/
static void segv_handler( int signal, siginfo_t *siginfo, void *sigcontext )
{
EXCEPTION_RECORD rec = { 0 };
ucontext_t *context = sigcontext;
rec.NumberParameters = 2;
rec.ExceptionInformation[0] = (get_fault_esr( context ) & 0x40) != 0;
rec.ExceptionInformation[1] = (ULONG_PTR)siginfo->si_addr;
rec.ExceptionCode = virtual_handle_fault( siginfo->si_addr, rec.ExceptionInformation[0],
(void *)SP_sig(context) );
if (!rec.ExceptionCode) return;
if (handle_syscall_fault( context, &rec )) return;
setup_exception( context, &rec );
}
/**********************************************************************
* ill_handler
*
* Handler for SIGILL.
*/
static void ill_handler( int signal, siginfo_t *siginfo, void *sigcontext )
{
EXCEPTION_RECORD rec = { EXCEPTION_ILLEGAL_INSTRUCTION };
setup_exception( sigcontext, &rec );
}
/**********************************************************************
* bus_handler
*
* Handler for SIGBUS.
*/
static void bus_handler( int signal, siginfo_t *siginfo, void *sigcontext )
{
EXCEPTION_RECORD rec = { EXCEPTION_DATATYPE_MISALIGNMENT };
setup_exception( sigcontext, &rec );
}
/**********************************************************************
* trap_handler
*
* Handler for SIGTRAP.
*/
static void trap_handler( int signal, siginfo_t *siginfo, void *sigcontext )
{
EXCEPTION_RECORD rec = { 0 };
switch (siginfo->si_code)
{
case TRAP_TRACE:
rec.ExceptionCode = EXCEPTION_SINGLE_STEP;
break;
case TRAP_BRKPT:
default:
rec.ExceptionCode = EXCEPTION_BREAKPOINT;
rec.NumberParameters = 1;
break;
}
setup_exception( sigcontext, &rec );
}
/**********************************************************************
* fpe_handler
*
* Handler for SIGFPE.
*/
static void fpe_handler( int signal, siginfo_t *siginfo, void *sigcontext )
{
EXCEPTION_RECORD rec = { 0 };
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;
}
setup_exception( sigcontext, &rec );
}
/**********************************************************************
* int_handler
*
* Handler for SIGINT.
*/
static void int_handler( int signal, siginfo_t *siginfo, void *sigcontext )
{
EXCEPTION_RECORD rec = { CONTROL_C_EXIT };
setup_exception( sigcontext, &rec );
}
/**********************************************************************
* abrt_handler
*
* Handler for SIGABRT.
*/
static void abrt_handler( int signal, siginfo_t *siginfo, void *sigcontext )
{
EXCEPTION_RECORD rec = { EXCEPTION_WINE_ASSERTION, EH_NONCONTINUABLE };
setup_exception( sigcontext, &rec );
}
/**********************************************************************
* 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
*/
NTSTATUS get_thread_ldt_entry( HANDLE handle, void *data, ULONG len, ULONG *ret_len )
{
return STATUS_NOT_IMPLEMENTED;
}
/******************************************************************************
* NtSetLdtEntries (NTDLL.@)
* ZwSetLdtEntries (NTDLL.@)
*/
NTSTATUS WINAPI NtSetLdtEntries( ULONG sel1, LDT_ENTRY entry1, ULONG sel2, LDT_ENTRY entry2 )
{
return STATUS_NOT_IMPLEMENTED;
}
/**********************************************************************
* signal_init_threading
*/
void signal_init_threading(void)
{
pthread_key_create( &teb_key, NULL );
}
/**********************************************************************
* signal_alloc_thread
*/
NTSTATUS signal_alloc_thread( TEB *teb )
{
return STATUS_SUCCESS;
}
/**********************************************************************
* signal_free_thread
*/
void signal_free_thread( TEB *teb )
{
}
/**********************************************************************
* signal_init_thread
*/
void signal_init_thread( TEB *teb )
{
/* Win64/ARM applications expect the TEB pointer to be in the x18 platform register. */
__asm__ __volatile__( "mov x18, %0" : : "r" (teb) );
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_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;
sig_act.sa_sigaction = ill_handler;
if (sigaction( SIGILL, &sig_act, NULL ) == -1) goto error;
sig_act.sa_sigaction = bus_handler;
if (sigaction( SIGBUS, &sig_act, NULL ) == -1) goto error;
return;
error:
perror("sigaction");
exit(1);
}
/**********************************************************************
* signal_init_syscalls
*/
void *signal_init_syscalls(void)
{
return __wine_syscall_dispatcher;
}
/***********************************************************************
* init_thread_context
*/
static void init_thread_context( CONTEXT *context, LPTHREAD_START_ROUTINE entry, void *arg, TEB *teb )
{
context->u.s.X0 = (DWORD64)entry;
context->u.s.X1 = (DWORD64)arg;
context->u.s.X18 = (DWORD64)teb;
context->Sp = (DWORD64)teb->Tib.StackBase;
context->Pc = (DWORD64)pRtlUserThreadStart;
}
/***********************************************************************
* get_initial_context
*/
PCONTEXT DECLSPEC_HIDDEN get_initial_context( LPTHREAD_START_ROUTINE entry, void *arg,
BOOL suspend, TEB *teb )
{
CONTEXT *ctx;
if (suspend)
{
CONTEXT context = { CONTEXT_ALL };
init_thread_context( &context, entry, arg, teb );
wait_suspend( &context );
ctx = (CONTEXT *)((ULONG_PTR)context.Sp & ~15) - 1;
*ctx = context;
}
else
{
ctx = (CONTEXT *)teb->Tib.StackBase - 1;
init_thread_context( ctx, entry, arg, teb );
}
pthread_sigmask( SIG_UNBLOCK, &server_block_set, NULL );
ctx->ContextFlags = CONTEXT_FULL;
return ctx;
}
/***********************************************************************
* signal_start_thread
*/
__ASM_GLOBAL_FUNC( signal_start_thread,
"stp x29, x30, [sp,#-16]!\n\t"
"mov x19, x3\n\t" /* thunk */
"mov x18, x4\n\t" /* teb */
/* store exit frame */
"mov x29, sp\n\t"
"str x29, [x4, #0x2f0]\n\t" /* arm64_thread_data()->exit_frame */
/* switch to thread stack */
"ldr x5, [x4, #8]\n\t" /* teb->Tib.StackBase */
"sub sp, x5, #0x1000\n\t"
/* attach dlls */
"mov x3, x4\n\t"
"bl " __ASM_NAME("get_initial_context") "\n\t"
"mov lr, #0\n\t"
"br x19" )
extern void DECLSPEC_NORETURN call_thread_exit_func( int status, void (*func)(int), TEB *teb );
__ASM_GLOBAL_FUNC( call_thread_exit_func,
"stp x29, x30, [sp,#-16]!\n\t"
"ldr x3, [x2, #0x2f0]\n\t" /* arm64_thread_data()->exit_frame */
"str xzr, [x2, #0x2f0]\n\t"
"cbz x3, 1f\n\t"
"mov sp, x3\n"
"1:\tldp x29, x30, [sp], #16\n\t"
"br x1" )
/***********************************************************************
* signal_exit_thread
*/
void signal_exit_thread( int status, void (*func)(int) )
{
call_thread_exit_func( status, func, NtCurrentTeb() );
}
/**********************************************************************
* NtCurrentTeb (NTDLL.@)
*/
TEB * WINAPI NtCurrentTeb(void)
{
return pthread_getspecific( teb_key );
}
#endif /* __aarch64__ */