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Sweden-Number/dlls/ntdll/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
*/
#ifdef __aarch64__
#include <assert.h>
#include <signal.h>
#include <stdlib.h>
#include <stdarg.h>
#include <stdio.h>
#define NONAMELESSUNION
#define NONAMELESSSTRUCT
#include "ntstatus.h"
#define WIN32_NO_STATUS
#include "windef.h"
#include "winternl.h"
#include "wine/exception.h"
#include "ntdll_misc.h"
#include "wine/debug.h"
#include "winnt.h"
WINE_DEFAULT_DEBUG_CHANNEL(seh);
typedef struct _SCOPE_TABLE
{
ULONG Count;
struct
{
ULONG BeginAddress;
ULONG EndAddress;
ULONG HandlerAddress;
ULONG JumpTarget;
} ScopeRecord[1];
} SCOPE_TABLE, *PSCOPE_TABLE;
/* layering violation: the setjmp buffer is defined in msvcrt, but used by RtlUnwindEx */
struct MSVCRT_JUMP_BUFFER
{
unsigned __int64 Frame;
unsigned __int64 Reserved;
unsigned __int64 X19;
unsigned __int64 X20;
unsigned __int64 X21;
unsigned __int64 X22;
unsigned __int64 X23;
unsigned __int64 X24;
unsigned __int64 X25;
unsigned __int64 X26;
unsigned __int64 X27;
unsigned __int64 X28;
unsigned __int64 Fp;
unsigned __int64 Lr;
unsigned __int64 Sp;
ULONG Fpcr;
ULONG Fpsr;
double D[8];
};
static void dump_scope_table( ULONG64 base, const SCOPE_TABLE *table )
{
unsigned int i;
TRACE( "scope table at %p\n", table );
for (i = 0; i < table->Count; i++)
TRACE( " %u: %lx-%lx handler %lx target %lx\n", i,
base + table->ScopeRecord[i].BeginAddress,
base + table->ScopeRecord[i].EndAddress,
base + table->ScopeRecord[i].HandlerAddress,
base + table->ScopeRecord[i].JumpTarget );
}
/*******************************************************************
* is_valid_frame
*/
static inline BOOL is_valid_frame( ULONG_PTR frame )
{
if (frame & 7) return FALSE;
return ((void *)frame >= NtCurrentTeb()->Tib.StackLimit &&
(void **)frame < (void **)NtCurrentTeb()->Tib.StackBase - 1);
}
/**************************************************************************
* __chkstk (NTDLL.@)
*
* Supposed to touch all the stack pages, but we shouldn't need that.
*/
__ASM_GLOBAL_FUNC( __chkstk, "ret")
/***********************************************************************
* RtlCaptureContext (NTDLL.@)
*/
__ASM_STDCALL_FUNC( RtlCaptureContext, 8,
"str x0, [x0, #0x8]\n\t" /* context->X0 */
"stp x1, x2, [x0, #0x10]\n\t" /* context->X1,X2 */
"stp x3, x4, [x0, #0x20]\n\t" /* context->X3,X4 */
"stp x5, x6, [x0, #0x30]\n\t" /* context->X5,X6 */
"stp x7, x8, [x0, #0x40]\n\t" /* context->X7,X8 */
"stp x9, x10, [x0, #0x50]\n\t" /* context->X9,X10 */
"stp x11, x12, [x0, #0x60]\n\t" /* context->X11,X12 */
"stp x13, x14, [x0, #0x70]\n\t" /* context->X13,X14 */
"stp x15, x16, [x0, #0x80]\n\t" /* context->X15,X16 */
"stp x17, x18, [x0, #0x90]\n\t" /* context->X17,X18 */
"stp x19, x20, [x0, #0xa0]\n\t" /* context->X19,X20 */
"stp x21, x22, [x0, #0xb0]\n\t" /* context->X21,X22 */
"stp x23, x24, [x0, #0xc0]\n\t" /* context->X23,X24 */
"stp x25, x26, [x0, #0xd0]\n\t" /* context->X25,X26 */
"stp x27, x28, [x0, #0xe0]\n\t" /* context->X27,X28 */
"stp x29, x30, [x0, #0xf0]\n\t" /* context->Fp,Lr */
"mov x1, sp\n\t"
"stp x1, x30, [x0, #0x100]\n\t" /* context->Sp,Pc */
"stp q0, q1, [x0, #0x110]\n\t" /* context->V[0-1] */
"stp q2, q3, [x0, #0x130]\n\t" /* context->V[2-3] */
"stp q4, q5, [x0, #0x150]\n\t" /* context->V[4-5] */
"stp q6, q7, [x0, #0x170]\n\t" /* context->V[6-7] */
"stp q8, q9, [x0, #0x190]\n\t" /* context->V[8-9] */
"stp q10, q11, [x0, #0x1a0]\n\t" /* context->V[10-11] */
"stp q12, q13, [x0, #0x1c0]\n\t" /* context->V[12-13] */
"stp q14, q15, [x0, #0x1e0]\n\t" /* context->V[14-15] */
"stp q16, q17, [x0, #0x210]\n\t" /* context->V[16-17] */
"stp q18, q19, [x0, #0x230]\n\t" /* context->V[18-19] */
"stp q20, q21, [x0, #0x250]\n\t" /* context->V[20-21] */
"stp q22, q23, [x0, #0x270]\n\t" /* context->V[22-23] */
"stp q24, q25, [x0, #0x290]\n\t" /* context->V[24-25] */
"stp q26, q27, [x0, #0x2a0]\n\t" /* context->V[26-27] */
"stp q28, q29, [x0, #0x2c0]\n\t" /* context->V[28-29] */
"stp q30, q31, [x0, #0x2e0]\n\t" /* context->V[30-31] */
"mov w1, #0x400000\n\t" /* CONTEXT_ARM64 */
"movk w1, #0x7\n\t" /* CONTEXT_FULL */
"str w1, [x0]\n\t" /* context->ContextFlags */
"mrs x1, NZCV\n\t"
"str w1, [x0, #0x4]\n\t" /* context->Cpsr */
"ret" )
/**********************************************************************
* virtual_unwind
*/
static NTSTATUS virtual_unwind( ULONG type, DISPATCHER_CONTEXT *dispatch, CONTEXT *context )
{
LDR_DATA_TABLE_ENTRY *module;
NTSTATUS status;
dispatch->ImageBase = 0;
dispatch->ScopeIndex = 0;
dispatch->EstablisherFrame = 0;
dispatch->ControlPc = context->Pc;
/*
* TODO: CONTEXT_UNWOUND_TO_CALL should be cleared if unwound past a
* signal frame.
*/
dispatch->ControlPcIsUnwound = (context->ContextFlags & CONTEXT_UNWOUND_TO_CALL) != 0;
/* first look for PE exception information */
if ((dispatch->FunctionEntry = lookup_function_info(
context->Pc - (dispatch->ControlPcIsUnwound ? 4 : 0),
&dispatch->ImageBase, &module )))
{
dispatch->LanguageHandler = RtlVirtualUnwind( type, dispatch->ImageBase, context->Pc,
dispatch->FunctionEntry, context,
&dispatch->HandlerData, &dispatch->EstablisherFrame,
NULL );
return STATUS_SUCCESS;
}
/* then look for host system exception information */
if (!module || (module->Flags & LDR_WINE_INTERNAL))
{
status = unix_funcs->unwind_builtin_dll( type, dispatch, context );
if (status != STATUS_SUCCESS) return status;
if (dispatch->EstablisherFrame)
{
dispatch->FunctionEntry = NULL;
if (dispatch->LanguageHandler && !module)
{
FIXME( "calling personality routine in system library not supported yet\n" );
dispatch->LanguageHandler = NULL;
}
return STATUS_SUCCESS;
}
}
else
{
status = context->Pc != context->u.s.Lr ?
STATUS_SUCCESS : STATUS_INVALID_DISPOSITION;
WARN( "exception data not found in %s for %p, LR %p, status %x\n",
debugstr_w(module->BaseDllName.Buffer), (void*) context->Pc,
(void*) context->u.s.Lr, status );
dispatch->EstablisherFrame = context->Sp;
dispatch->LanguageHandler = NULL;
context->Pc = context->u.s.Lr;
context->ContextFlags |= CONTEXT_UNWOUND_TO_CALL;
return status;
}
dispatch->EstablisherFrame = context->u.s.Fp;
dispatch->LanguageHandler = NULL;
context->Pc = context->u.s.Lr;
context->ContextFlags |= CONTEXT_UNWOUND_TO_CALL;
return STATUS_SUCCESS;
}
struct unwind_exception_frame
{
EXCEPTION_REGISTRATION_RECORD frame;
DISPATCHER_CONTEXT *dispatch;
};
/**********************************************************************
* unwind_exception_handler
*
* Handler for exceptions happening while calling an unwind handler.
*/
static DWORD __cdecl unwind_exception_handler( EXCEPTION_RECORD *rec, EXCEPTION_REGISTRATION_RECORD *frame,
CONTEXT *context, EXCEPTION_REGISTRATION_RECORD **dispatcher )
{
struct unwind_exception_frame *unwind_frame = (struct unwind_exception_frame *)frame;
DISPATCHER_CONTEXT *dispatch = (DISPATCHER_CONTEXT *)dispatcher;
/* copy the original dispatcher into the current one, except for the TargetIp */
dispatch->ControlPc = unwind_frame->dispatch->ControlPc;
dispatch->ImageBase = unwind_frame->dispatch->ImageBase;
dispatch->FunctionEntry = unwind_frame->dispatch->FunctionEntry;
dispatch->EstablisherFrame = unwind_frame->dispatch->EstablisherFrame;
dispatch->ContextRecord = unwind_frame->dispatch->ContextRecord;
dispatch->LanguageHandler = unwind_frame->dispatch->LanguageHandler;
dispatch->HandlerData = unwind_frame->dispatch->HandlerData;
dispatch->HistoryTable = unwind_frame->dispatch->HistoryTable;
dispatch->ScopeIndex = unwind_frame->dispatch->ScopeIndex;
TRACE( "detected collided unwind\n" );
return ExceptionCollidedUnwind;
}
/**********************************************************************
* call_unwind_handler
*
* Call a single unwind handler.
*/
static DWORD call_unwind_handler( EXCEPTION_RECORD *rec, DISPATCHER_CONTEXT *dispatch )
{
struct unwind_exception_frame frame;
DWORD res;
frame.frame.Handler = unwind_exception_handler;
frame.dispatch = dispatch;
__wine_push_frame( &frame.frame );
TRACE( "calling handler %p (rec=%p, frame=0x%lx context=%p, dispatch=%p)\n",
dispatch->LanguageHandler, rec, dispatch->EstablisherFrame, dispatch->ContextRecord, dispatch );
res = dispatch->LanguageHandler( rec, (void *)dispatch->EstablisherFrame, dispatch->ContextRecord, dispatch );
TRACE( "handler %p returned %x\n", dispatch->LanguageHandler, res );
__wine_pop_frame( &frame.frame );
switch (res)
{
case ExceptionContinueSearch:
case ExceptionCollidedUnwind:
break;
default:
raise_status( STATUS_INVALID_DISPOSITION, rec );
break;
}
return res;
}
/**********************************************************************
* call_teb_unwind_handler
*
* Call a single unwind handler from the TEB chain.
*/
static DWORD call_teb_unwind_handler( EXCEPTION_RECORD *rec, DISPATCHER_CONTEXT *dispatch,
EXCEPTION_REGISTRATION_RECORD *teb_frame )
{
DWORD res;
TRACE( "calling TEB handler %p (rec=%p, frame=%p context=%p, dispatch=%p)\n",
teb_frame->Handler, rec, teb_frame, dispatch->ContextRecord, dispatch );
res = teb_frame->Handler( rec, teb_frame, dispatch->ContextRecord, (EXCEPTION_REGISTRATION_RECORD**)dispatch );
TRACE( "handler at %p returned %u\n", teb_frame->Handler, res );
switch (res)
{
case ExceptionContinueSearch:
case ExceptionCollidedUnwind:
break;
default:
raise_status( STATUS_INVALID_DISPOSITION, rec );
break;
}
return res;
}
static DWORD __cdecl nested_exception_handler( EXCEPTION_RECORD *rec, EXCEPTION_REGISTRATION_RECORD *frame,
CONTEXT *context, EXCEPTION_REGISTRATION_RECORD **dispatcher )
{
if (!(rec->ExceptionFlags & (EH_UNWINDING | EH_EXIT_UNWIND)))
rec->ExceptionFlags |= EH_NESTED_CALL;
return ExceptionContinueSearch;
}
/**********************************************************************
* call_handler
*
* Call a single exception handler.
* FIXME: Handle nested exceptions.
*/
static DWORD call_handler( EXCEPTION_RECORD *rec, CONTEXT *context, DISPATCHER_CONTEXT *dispatch )
{
EXCEPTION_REGISTRATION_RECORD frame;
DWORD res;
frame.Handler = nested_exception_handler;
__wine_push_frame( &frame );
TRACE( "calling handler %p (rec=%p, frame=0x%lx context=%p, dispatch=%p)\n",
dispatch->LanguageHandler, rec, dispatch->EstablisherFrame, dispatch->ContextRecord, dispatch );
res = dispatch->LanguageHandler( rec, (void *)dispatch->EstablisherFrame, context, dispatch );
TRACE( "handler at %p returned %u\n", dispatch->LanguageHandler, res );
rec->ExceptionFlags &= EH_NONCONTINUABLE;
__wine_pop_frame( &frame );
return res;
}
/**********************************************************************
* call_teb_handler
*
* Call a single exception handler from the TEB chain.
* FIXME: Handle nested exceptions.
*/
static DWORD call_teb_handler( EXCEPTION_RECORD *rec, CONTEXT *context, DISPATCHER_CONTEXT *dispatch,
EXCEPTION_REGISTRATION_RECORD *teb_frame )
{
DWORD res;
TRACE( "calling TEB handler %p (rec=%p, frame=%p context=%p, dispatch=%p)\n",
teb_frame->Handler, rec, teb_frame, dispatch->ContextRecord, dispatch );
res = teb_frame->Handler( rec, teb_frame, context, (EXCEPTION_REGISTRATION_RECORD**)dispatch );
TRACE( "handler at %p returned %u\n", teb_frame->Handler, res );
return res;
}
/**********************************************************************
* call_function_handlers
*
* Call the per-function handlers.
*/
static NTSTATUS call_function_handlers( EXCEPTION_RECORD *rec, CONTEXT *orig_context )
{
EXCEPTION_REGISTRATION_RECORD *teb_frame = NtCurrentTeb()->Tib.ExceptionList;
UNWIND_HISTORY_TABLE table;
DISPATCHER_CONTEXT dispatch;
CONTEXT context, prev_context;
NTSTATUS status;
context = *orig_context;
dispatch.TargetPc = 0;
dispatch.ContextRecord = &context;
dispatch.HistoryTable = &table;
prev_context = context;
dispatch.NonVolatileRegisters = (BYTE *)&prev_context.u.s.X19;
for (;;)
{
status = virtual_unwind( UNW_FLAG_EHANDLER, &dispatch, &context );
if (status != STATUS_SUCCESS) return status;
unwind_done:
if (!dispatch.EstablisherFrame) break;
if (!is_valid_frame( dispatch.EstablisherFrame ))
{
ERR( "invalid frame %lx (%p-%p)\n", dispatch.EstablisherFrame,
NtCurrentTeb()->Tib.StackLimit, NtCurrentTeb()->Tib.StackBase );
rec->ExceptionFlags |= EH_STACK_INVALID;
break;
}
if (dispatch.LanguageHandler)
{
switch (call_handler( rec, orig_context, &dispatch ))
{
case ExceptionContinueExecution:
if (rec->ExceptionFlags & EH_NONCONTINUABLE) return STATUS_NONCONTINUABLE_EXCEPTION;
return STATUS_SUCCESS;
case ExceptionContinueSearch:
break;
case ExceptionNestedException:
FIXME( "nested exception\n" );
break;
case ExceptionCollidedUnwind: {
ULONG64 frame;
context = *dispatch.ContextRecord;
dispatch.ContextRecord = &context;
RtlVirtualUnwind( UNW_FLAG_NHANDLER, dispatch.ImageBase,
dispatch.ControlPc, dispatch.FunctionEntry,
&context, &dispatch.HandlerData, &frame, NULL );
goto unwind_done;
}
default:
return STATUS_INVALID_DISPOSITION;
}
}
/* hack: call wine handlers registered in the tib list */
else while ((ULONG64)teb_frame < context.Sp)
{
TRACE( "found wine frame %p rsp %lx handler %p\n",
teb_frame, context.Sp, teb_frame->Handler );
dispatch.EstablisherFrame = (ULONG64)teb_frame;
switch (call_teb_handler( rec, orig_context, &dispatch, teb_frame ))
{
case ExceptionContinueExecution:
if (rec->ExceptionFlags & EH_NONCONTINUABLE) return STATUS_NONCONTINUABLE_EXCEPTION;
return STATUS_SUCCESS;
case ExceptionContinueSearch:
break;
case ExceptionNestedException:
FIXME( "nested exception\n" );
break;
case ExceptionCollidedUnwind: {
ULONG64 frame;
context = *dispatch.ContextRecord;
dispatch.ContextRecord = &context;
RtlVirtualUnwind( UNW_FLAG_NHANDLER, dispatch.ImageBase,
dispatch.ControlPc, dispatch.FunctionEntry,
&context, &dispatch.HandlerData, &frame, NULL );
teb_frame = teb_frame->Prev;
goto unwind_done;
}
default:
return STATUS_INVALID_DISPOSITION;
}
teb_frame = teb_frame->Prev;
}
if (context.Sp == (ULONG64)NtCurrentTeb()->Tib.StackBase) break;
prev_context = context;
}
return STATUS_UNHANDLED_EXCEPTION;
}
/*******************************************************************
* KiUserExceptionDispatcher (NTDLL.@)
*/
NTSTATUS WINAPI KiUserExceptionDispatcher( EXCEPTION_RECORD *rec, CONTEXT *context )
{
NTSTATUS status;
DWORD c;
TRACE( "code=%x flags=%x addr=%p pc=%lx tid=%04x\n",
rec->ExceptionCode, rec->ExceptionFlags, rec->ExceptionAddress,
context->Pc, GetCurrentThreadId() );
for (c = 0; c < rec->NumberParameters; c++)
TRACE( " info[%d]=%016lx\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(" 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 );
}
if (call_vectored_handlers( rec, context ) == EXCEPTION_CONTINUE_EXECUTION)
NtContinue( context, FALSE );
if ((status = call_function_handlers( rec, context )) == STATUS_SUCCESS)
NtContinue( context, FALSE );
if (status != STATUS_UNHANDLED_EXCEPTION) RtlRaiseStatus( status );
return NtRaiseException( rec, context, FALSE );
}
/*******************************************************************
* KiUserApcDispatcher (NTDLL.@)
*/
void WINAPI KiUserApcDispatcher( CONTEXT *context, ULONG_PTR ctx, ULONG_PTR arg1, ULONG_PTR arg2,
PNTAPCFUNC func )
{
func( ctx, arg1, arg2 );
NtContinue( context, TRUE );
}
/***********************************************************************
* Definitions for Win32 unwind tables
*/
struct unwind_info
{
DWORD function_length : 18;
DWORD version : 2;
DWORD x : 1;
DWORD e : 1;
DWORD epilog : 5;
DWORD codes : 5;
};
struct unwind_info_ext
{
WORD epilog;
BYTE codes;
BYTE reserved;
};
struct unwind_info_epilog
{
DWORD offset : 18;
DWORD res : 4;
DWORD index : 10;
};
static const BYTE unwind_code_len[256] =
{
/* 00 */ 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
/* 20 */ 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
/* 40 */ 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
/* 60 */ 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
/* 80 */ 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
/* a0 */ 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
/* c0 */ 2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,
/* e0 */ 4,1,2,1,1,1,1,2,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1
};
/***********************************************************************
* get_sequence_len
*/
static unsigned int get_sequence_len( BYTE *ptr, BYTE *end )
{
unsigned int ret = 0;
while (ptr < end)
{
if (*ptr == 0xe4 || *ptr == 0xe5) break;
ptr += unwind_code_len[*ptr];
ret++;
}
return ret;
}
/***********************************************************************
* restore_regs
*/
static void restore_regs( int reg, int count, int pos, CONTEXT *context,
KNONVOLATILE_CONTEXT_POINTERS *ptrs )
{
int i, offset = max( 0, pos );
for (i = 0; i < count; i++)
{
if (ptrs && reg + i >= 19) (&ptrs->X19)[reg + i - 19] = (DWORD64 *)context->Sp + i + offset;
context->u.X[reg + i] = ((DWORD64 *)context->Sp)[i + offset];
}
if (pos < 0) context->Sp += -8 * pos;
}
/***********************************************************************
* restore_fpregs
*/
static void restore_fpregs( int reg, int count, int pos, CONTEXT *context,
KNONVOLATILE_CONTEXT_POINTERS *ptrs )
{
int i, offset = max( 0, pos );
for (i = 0; i < count; i++)
{
if (ptrs && reg + i >= 8) (&ptrs->D8)[reg + i - 8] = (DWORD64 *)context->Sp + i + offset;
context->V[reg + i].D[0] = ((double *)context->Sp)[i + offset];
}
if (pos < 0) context->Sp += -8 * pos;
}
/***********************************************************************
* process_unwind_codes
*/
static void process_unwind_codes( BYTE *ptr, BYTE *end, CONTEXT *context,
KNONVOLATILE_CONTEXT_POINTERS *ptrs, int skip )
{
unsigned int val, len, save_next = 2;
/* skip codes */
while (ptr < end && skip)
{
if (*ptr == 0xe4 || *ptr == 0xe5) break;
ptr += unwind_code_len[*ptr];
skip--;
}
while (ptr < end)
{
if ((len = unwind_code_len[*ptr]) > 1)
{
if (ptr + len > end) break;
val = ptr[0] * 0x100 + ptr[1];
}
else val = *ptr;
if (*ptr < 0x20) /* alloc_s */
context->Sp += 16 * (val & 0x1f);
else if (*ptr < 0x40) /* save_r19r20_x */
restore_regs( 19, save_next, -(val & 0x1f), context, ptrs );
else if (*ptr < 0x80) /* save_fplr */
restore_regs( 29, 2, val & 0x3f, context, ptrs );
else if (*ptr < 0xc0) /* save_fplr_x */
restore_regs( 29, 2, -(val & 0x3f) - 1, context, ptrs );
else if (*ptr < 0xc8) /* alloc_m */
context->Sp += 16 * (val & 0x7ff);
else if (*ptr < 0xcc) /* save_regp */
restore_regs( 19 + ((val >> 6) & 0xf), save_next, val & 0x3f, context, ptrs );
else if (*ptr < 0xd0) /* save_regp_x */
restore_regs( 19 + ((val >> 6) & 0xf), save_next, -(val & 0x3f) - 1, context, ptrs );
else if (*ptr < 0xd4) /* save_reg */
restore_regs( 19 + ((val >> 6) & 0xf), 1, val & 0x3f, context, ptrs );
else if (*ptr < 0xd6) /* save_reg_x */
restore_regs( 19 + ((val >> 5) & 0xf), 1, -(val & 0x1f) - 1, context, ptrs );
else if (*ptr < 0xd8) /* save_lrpair */
{
restore_regs( 19 + 2 * ((val >> 6) & 0x7), 1, val & 0x3f, context, ptrs );
restore_regs( 30, 1, (val & 0x3f) + 1, context, ptrs );
}
else if (*ptr < 0xda) /* save_fregp */
restore_fpregs( 8 + ((val >> 6) & 0x7), save_next, val & 0x3f, context, ptrs );
else if (*ptr < 0xdc) /* save_fregp_x */
restore_fpregs( 8 + ((val >> 6) & 0x7), save_next, -(val & 0x3f) - 1, context, ptrs );
else if (*ptr < 0xde) /* save_freg */
restore_fpregs( 8 + ((val >> 6) & 0x7), 1, val & 0x3f, context, ptrs );
else if (*ptr == 0xde) /* save_freg_x */
restore_fpregs( 8 + ((val >> 5) & 0x7), 1, -(val & 0x3f) - 1, context, ptrs );
else if (*ptr == 0xe0) /* alloc_l */
context->Sp += 16 * ((ptr[1] << 16) + (ptr[2] << 8) + ptr[3]);
else if (*ptr == 0xe1) /* set_fp */
context->Sp = context->u.s.Fp;
else if (*ptr == 0xe2) /* add_fp */
context->Sp = context->u.s.Fp - 8 * (val & 0xff);
else if (*ptr == 0xe3) /* nop */
/* nop */ ;
else if (*ptr == 0xe4) /* end */
break;
else if (*ptr == 0xe5) /* end_c */
break;
else if (*ptr == 0xe6) /* save_next */
{
save_next += 2;
ptr += len;
continue;
}
else if (*ptr == 0xe9) /* MSFT_OP_MACHINE_FRAME */
{
context->Pc = ((DWORD64 *)context->Sp)[1];
context->Sp = ((DWORD64 *)context->Sp)[0];
}
else if (*ptr == 0xea) /* MSFT_OP_CONTEXT */
{
memcpy( context, (DWORD64 *)context->Sp, sizeof(CONTEXT) );
}
else
{
WARN( "unsupported code %02x\n", *ptr );
return;
}
save_next = 2;
ptr += len;
}
}
/***********************************************************************
* unwind_packed_data
*/
static void *unwind_packed_data( ULONG_PTR base, ULONG_PTR pc, RUNTIME_FUNCTION *func,
CONTEXT *context, KNONVOLATILE_CONTEXT_POINTERS *ptrs )
{
int i;
unsigned int len, offset, skip = 0;
unsigned int int_size = func->u.s.RegI * 8, fp_size = func->u.s.RegF * 8, regsave, local_size;
unsigned int int_regs, fp_regs, saved_regs, local_size_regs;
TRACE( "function %lx-%lx: len=%#x flag=%x regF=%u regI=%u H=%u CR=%u frame=%x\n",
base + func->BeginAddress, base + func->BeginAddress + func->u.s.FunctionLength * 4,
func->u.s.FunctionLength, func->u.s.Flag, func->u.s.RegF, func->u.s.RegI,
func->u.s.H, func->u.s.CR, func->u.s.FrameSize );
if (func->u.s.CR == 1) int_size += 8;
if (func->u.s.RegF) fp_size += 8;
regsave = ((int_size + fp_size + 8 * 8 * func->u.s.H) + 0xf) & ~0xf;
local_size = func->u.s.FrameSize * 16 - regsave;
int_regs = int_size / 8;
fp_regs = fp_size / 8;
saved_regs = regsave / 8;
local_size_regs = local_size / 8;
/* check for prolog/epilog */
if (func->u.s.Flag == 1)
{
offset = ((pc - base) - func->BeginAddress) / 4;
if (offset < 17 || offset >= func->u.s.FunctionLength - 15)
{
len = (int_size + 8) / 16 + (fp_size + 8) / 16;
switch (func->u.s.CR)
{
case 3:
len++; /* mov x29,sp */
len++; /* stp x29,lr,[sp,0] */
if (local_size <= 512) break;
/* fall through */
case 0:
case 1:
if (local_size) len++; /* sub sp,sp,#local_size */
if (local_size > 4088) len++; /* sub sp,sp,#4088 */
break;
}
len += 4 * func->u.s.H;
if (offset < len) /* prolog */
{
skip = len - offset;
}
else if (offset >= func->u.s.FunctionLength - (len + 1)) /* epilog */
{
skip = offset - (func->u.s.FunctionLength - (len + 1));
}
}
}
if (!skip)
{
if (func->u.s.CR == 3)
{
DWORD64 *fp = (DWORD64 *) context->u.s.Fp; /* u.X[29] */
context->Sp = context->u.s.Fp;
context->u.X[29] = fp[0];
context->u.X[30] = fp[1];
}
context->Sp += local_size;
if (fp_size) restore_fpregs( 8, fp_regs, int_regs, context, ptrs );
if (func->u.s.CR == 1) restore_regs( 30, 1, int_regs - 1, context, ptrs );
restore_regs( 19, func->u.s.RegI, -saved_regs, context, ptrs );
}
else
{
unsigned int pos = 0;
switch (func->u.s.CR)
{
case 3:
/* mov x29,sp */
if (pos++ >= skip) context->Sp = context->u.s.Fp;
if (local_size <= 512)
{
/* stp x29,lr,[sp,-#local_size]! */
if (pos++ >= skip) restore_regs( 29, 2, -local_size_regs, context, ptrs );
break;
}
/* stp x29,lr,[sp,0] */
if (pos++ >= skip) restore_regs( 29, 2, 0, context, ptrs );
/* fall through */
case 0:
case 1:
if (!local_size) break;
/* sub sp,sp,#local_size */
if (pos++ >= skip) context->Sp += (local_size - 1) % 4088 + 1;
if (local_size > 4088 && pos++ >= skip) context->Sp += 4088;
break;
}
if (func->u.s.H) pos += 4;
if (fp_size)
{
if (func->u.s.RegF % 2 == 0 && pos++ >= skip)
/* str d%u,[sp,#fp_size] */
restore_fpregs( 8 + func->u.s.RegF, 1, int_regs + fp_regs - 1, context, ptrs );
for (i = (func->u.s.RegF + 1) / 2 - 1; i >= 0; i--)
{
if (pos++ < skip) continue;
if (!i && !int_size)
/* stp d8,d9,[sp,-#regsave]! */
restore_fpregs( 8, 2, -saved_regs, context, ptrs );
else
/* stp dn,dn+1,[sp,#offset] */
restore_fpregs( 8 + 2 * i, 2, int_regs + 2 * i, context, ptrs );
}
}
if (func->u.s.RegI % 2)
{
if (pos++ >= skip)
{
/* stp xn,lr,[sp,#offset] */
if (func->u.s.CR == 1) restore_regs( 30, 1, int_regs - 1, context, ptrs );
/* str xn,[sp,#offset] */
restore_regs( 18 + func->u.s.RegI, 1,
(func->u.s.RegI > 1) ? func->u.s.RegI - 1 : -saved_regs,
context, ptrs );
}
}
else if (func->u.s.CR == 1)
{
/* str lr,[sp,#offset] */
if (pos++ >= skip) restore_regs( 30, 1, func->u.s.RegI ? int_regs - 1 : -saved_regs, context, ptrs );
}
for (i = func->u.s.RegI/ 2 - 1; i >= 0; i--)
{
if (pos++ < skip) continue;
if (i)
/* stp xn,xn+1,[sp,#offset] */
restore_regs( 19 + 2 * i, 2, 2 * i, context, ptrs );
else
/* stp x19,x20,[sp,-#regsave]! */
restore_regs( 19, 2, -saved_regs, context, ptrs );
}
}
return NULL;
}
/***********************************************************************
* unwind_full_data
*/
static void *unwind_full_data( ULONG_PTR base, ULONG_PTR pc, RUNTIME_FUNCTION *func,
CONTEXT *context, PVOID *handler_data, KNONVOLATILE_CONTEXT_POINTERS *ptrs )
{
struct unwind_info *info;
struct unwind_info_epilog *info_epilog;
unsigned int i, codes, epilogs, len, offset;
void *data;
BYTE *end;
info = (struct unwind_info *)((char *)base + func->u.UnwindData);
data = info + 1;
epilogs = info->epilog;
codes = info->codes;
if (!codes && !epilogs)
{
struct unwind_info_ext *infoex = data;
codes = infoex->codes;
epilogs = infoex->epilog;
data = infoex + 1;
}
info_epilog = data;
if (!info->e) data = info_epilog + epilogs;
offset = ((pc - base) - func->BeginAddress) / 4;
end = (BYTE *)data + codes * 4;
TRACE( "function %lx-%lx: len=%#x ver=%u X=%u E=%u epilogs=%u codes=%u\n",
base + func->BeginAddress, base + func->BeginAddress + info->function_length * 4,
info->function_length, info->version, info->x, info->e, epilogs, codes * 4 );
/* check for prolog */
if (offset < codes * 4)
{
len = get_sequence_len( data, end );
if (offset < len)
{
process_unwind_codes( data, end, context, ptrs, len - offset );
return NULL;
}
}
/* check for epilog */
if (!info->e)
{
for (i = 0; i < epilogs; i++)
{
if (offset < info_epilog[i].offset) break;
if (offset - info_epilog[i].offset < codes * 4 - info_epilog[i].index)
{
BYTE *ptr = (BYTE *)data + info_epilog[i].index;
len = get_sequence_len( ptr, end );
if (offset <= info_epilog[i].offset + len)
{
process_unwind_codes( ptr, end, context, ptrs, offset - info_epilog[i].offset );
return NULL;
}
}
}
}
else if (info->function_length - offset <= codes * 4 - epilogs)
{
BYTE *ptr = (BYTE *)data + epilogs;
len = get_sequence_len( ptr, end ) + 1;
if (offset >= info->function_length - len)
{
process_unwind_codes( ptr, end, context, ptrs, offset - (info->function_length - len) );
return NULL;
}
}
process_unwind_codes( data, end, context, ptrs, 0 );
/* get handler since we are inside the main code */
if (info->x)
{
DWORD *handler_rva = (DWORD *)data + codes;
*handler_data = handler_rva + 1;
return (char *)base + *handler_rva;
}
return NULL;
}
/**********************************************************************
* RtlVirtualUnwind (NTDLL.@)
*/
PVOID WINAPI RtlVirtualUnwind( ULONG type, ULONG_PTR base, ULONG_PTR pc,
RUNTIME_FUNCTION *func, CONTEXT *context,
PVOID *handler_data, ULONG_PTR *frame_ret,
KNONVOLATILE_CONTEXT_POINTERS *ctx_ptr )
{
void *handler;
TRACE( "type %x pc %lx sp %lx func %lx\n", type, pc, context->Sp, base + func->BeginAddress );
*handler_data = NULL;
context->Pc = 0;
if (func->u.s.Flag)
handler = unwind_packed_data( base, pc, func, context, ctx_ptr );
else
handler = unwind_full_data( base, pc, func, context, handler_data, ctx_ptr );
TRACE( "ret: lr=%lx sp=%lx handler=%p\n", context->u.s.Lr, context->Sp, handler );
if (!context->Pc)
context->Pc = context->u.s.Lr;
context->ContextFlags |= CONTEXT_UNWOUND_TO_CALL;
*frame_ret = context->Sp;
return handler;
}
/**********************************************************************
* call_consolidate_callback
*
* Wrapper function to call a consolidate callback from a fake frame.
* If the callback executes RtlUnwindEx (like for example done in C++ handlers),
* we have to skip all frames which were already processed. To do that we
* trick the unwinding functions into thinking the call came from somewhere
* else. All CFI instructions are either DW_CFA_def_cfa_expression or
* DW_CFA_expression, and the expressions have the following format:
*
* DW_OP_breg31; sleb128 <OFFSET> | Load x31 + struct member offset
* [DW_OP_deref] | Dereference, only for CFA
*/
extern void * WINAPI call_consolidate_callback( CONTEXT *context,
void *(CALLBACK *callback)(EXCEPTION_RECORD *),
EXCEPTION_RECORD *rec,
TEB *teb );
__ASM_GLOBAL_FUNC( call_consolidate_callback,
"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")
__ASM_SEH(".seh_nop\n\t")
"stp x1, x2, [sp, #0x10]\n\t"
__ASM_SEH(".seh_nop\n\t")
"str x3, [sp, #0x20]\n\t"
__ASM_SEH(".seh_nop\n\t")
"mov x29, sp\n\t"
__ASM_CFI(".cfi_def_cfa_register 29\n\t")
__ASM_SEH(".seh_nop\n\t")
__ASM_CFI(".cfi_remember_state\n\t")
/* Memcpy the context onto the stack */
"sub sp, sp, #0x390\n\t"
__ASM_SEH(".seh_nop\n\t")
"mov x1, x0\n\t"
__ASM_SEH(".seh_nop\n\t")
"mov x0, sp\n\t"
__ASM_SEH(".seh_nop\n\t")
"mov x2, #0x390\n\t"
__ASM_SEH(".seh_nop\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,0xf8,0x01\n\t") /* x30 */
__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 */
__ASM_SEH(".seh_context\n\t")
__ASM_SEH(".seh_endprologue\n\t")
"ldp x1, x2, [x29, #0x10]\n\t"
"ldr x18, [x29, #0x20]\n\t"
"mov x0, x2\n\t"
"blr x1\n\t"
"mov sp, x29\n\t"
__ASM_CFI(".cfi_restore_state\n\t")
"ldp x29, x30, [sp], #48\n\t"
__ASM_CFI(".cfi_restore 30\n\t")
__ASM_CFI(".cfi_restore 29\n\t")
__ASM_CFI(".cfi_def_cfa 31, 0\n\t")
"ret")
/*******************************************************************
* RtlRestoreContext (NTDLL.@)
*/
void CDECL RtlRestoreContext( CONTEXT *context, EXCEPTION_RECORD *rec )
{
EXCEPTION_REGISTRATION_RECORD *teb_frame = NtCurrentTeb()->Tib.ExceptionList;
if (rec && rec->ExceptionCode == STATUS_LONGJUMP && rec->NumberParameters >= 1)
{
struct MSVCRT_JUMP_BUFFER *jmp = (struct MSVCRT_JUMP_BUFFER *)rec->ExceptionInformation[0];
int i;
context->u.s.X19 = jmp->X19;
context->u.s.X20 = jmp->X20;
context->u.s.X21 = jmp->X21;
context->u.s.X22 = jmp->X22;
context->u.s.X23 = jmp->X23;
context->u.s.X24 = jmp->X24;
context->u.s.X25 = jmp->X25;
context->u.s.X26 = jmp->X26;
context->u.s.X27 = jmp->X27;
context->u.s.X28 = jmp->X28;
context->u.s.Fp = jmp->Fp;
context->u.s.Lr = jmp->Lr;
context->Sp = jmp->Sp;
context->Fpcr = jmp->Fpcr;
context->Fpsr = jmp->Fpsr;
for (i = 0; i < 8; i++)
context->V[8+i].D[0] = jmp->D[i];
}
else if (rec && rec->ExceptionCode == STATUS_UNWIND_CONSOLIDATE && rec->NumberParameters >= 1)
{
PVOID (CALLBACK *consolidate)(EXCEPTION_RECORD *) = (void *)rec->ExceptionInformation[0];
TRACE( "calling consolidate callback %p (rec=%p)\n", consolidate, rec );
rec->ExceptionInformation[10] = (ULONG_PTR)&context->u.s.X19;
context->Pc = (ULONG64)call_consolidate_callback( context, consolidate, rec, NtCurrentTeb() );
}
/* hack: remove no longer accessible TEB frames */
while ((ULONG64)teb_frame < context->Sp)
{
TRACE( "removing TEB frame: %p\n", teb_frame );
teb_frame = __wine_pop_frame( teb_frame );
}
TRACE( "returning to %lx stack %lx\n", context->Pc, context->Sp );
NtSetContextThread( GetCurrentThread(), context );
}
/*******************************************************************
* RtlUnwindEx (NTDLL.@)
*/
void WINAPI RtlUnwindEx( PVOID end_frame, PVOID target_ip, EXCEPTION_RECORD *rec,
PVOID retval, CONTEXT *context, UNWIND_HISTORY_TABLE *table )
{
EXCEPTION_REGISTRATION_RECORD *teb_frame = NtCurrentTeb()->Tib.ExceptionList;
EXCEPTION_RECORD record;
DISPATCHER_CONTEXT dispatch;
CONTEXT new_context;
NTSTATUS status;
DWORD i;
RtlCaptureContext( context );
new_context = *context;
/* build an exception record, if we do not have one */
if (!rec)
{
record.ExceptionCode = STATUS_UNWIND;
record.ExceptionFlags = 0;
record.ExceptionRecord = NULL;
record.ExceptionAddress = (void *)context->Pc;
record.NumberParameters = 0;
rec = &record;
}
rec->ExceptionFlags |= EH_UNWINDING | (end_frame ? 0 : EH_EXIT_UNWIND);
TRACE( "code=%x flags=%x end_frame=%p target_ip=%p pc=%016lx\n",
rec->ExceptionCode, rec->ExceptionFlags, end_frame, target_ip, context->Pc );
for (i = 0; i < min( EXCEPTION_MAXIMUM_PARAMETERS, rec->NumberParameters ); i++)
TRACE( " info[%d]=%016lx\n", i, rec->ExceptionInformation[i] );
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 );
dispatch.TargetPc = (ULONG64)target_ip;
dispatch.ContextRecord = context;
dispatch.HistoryTable = table;
dispatch.NonVolatileRegisters = (BYTE *)&context->u.s.X19;
for (;;)
{
status = virtual_unwind( UNW_FLAG_UHANDLER, &dispatch, &new_context );
if (status != STATUS_SUCCESS) raise_status( status, rec );
unwind_done:
if (!dispatch.EstablisherFrame) break;
if (!is_valid_frame( dispatch.EstablisherFrame ))
{
ERR( "invalid frame %lx (%p-%p)\n", dispatch.EstablisherFrame,
NtCurrentTeb()->Tib.StackLimit, NtCurrentTeb()->Tib.StackBase );
rec->ExceptionFlags |= EH_STACK_INVALID;
break;
}
if (dispatch.LanguageHandler)
{
if (end_frame && (dispatch.EstablisherFrame > (ULONG64)end_frame))
{
ERR( "invalid end frame %lx/%p\n", dispatch.EstablisherFrame, end_frame );
raise_status( STATUS_INVALID_UNWIND_TARGET, rec );
}
if (dispatch.EstablisherFrame == (ULONG64)end_frame) rec->ExceptionFlags |= EH_TARGET_UNWIND;
if (call_unwind_handler( rec, &dispatch ) == ExceptionCollidedUnwind)
{
ULONG64 frame;
*context = new_context = *dispatch.ContextRecord;
dispatch.ContextRecord = context;
RtlVirtualUnwind( UNW_FLAG_NHANDLER, dispatch.ImageBase,
dispatch.ControlPc, dispatch.FunctionEntry,
&new_context, &dispatch.HandlerData, &frame,
NULL );
rec->ExceptionFlags |= EH_COLLIDED_UNWIND;
goto unwind_done;
}
rec->ExceptionFlags &= ~EH_COLLIDED_UNWIND;
}
else /* hack: call builtin handlers registered in the tib list */
{
DWORD64 backup_frame = dispatch.EstablisherFrame;
while ((ULONG64)teb_frame < new_context.Sp && (ULONG64)teb_frame < (ULONG64)end_frame)
{
TRACE( "found builtin frame %p handler %p\n", teb_frame, teb_frame->Handler );
dispatch.EstablisherFrame = (ULONG64)teb_frame;
if (call_teb_unwind_handler( rec, &dispatch, teb_frame ) == ExceptionCollidedUnwind)
{
ULONG64 frame;
teb_frame = __wine_pop_frame( teb_frame );
*context = new_context = *dispatch.ContextRecord;
dispatch.ContextRecord = context;
RtlVirtualUnwind( UNW_FLAG_NHANDLER, dispatch.ImageBase,
dispatch.ControlPc, dispatch.FunctionEntry,
&new_context, &dispatch.HandlerData,
&frame, NULL );
rec->ExceptionFlags |= EH_COLLIDED_UNWIND;
goto unwind_done;
}
teb_frame = __wine_pop_frame( teb_frame );
}
if ((ULONG64)teb_frame == (ULONG64)end_frame && (ULONG64)end_frame < new_context.Sp) break;
dispatch.EstablisherFrame = backup_frame;
}
if (dispatch.EstablisherFrame == (ULONG64)end_frame) break;
*context = new_context;
}
context->u.s.X0 = (ULONG64)retval;
context->Pc = (ULONG64)target_ip;
RtlRestoreContext(context, rec);
}
/***********************************************************************
* RtlUnwind (NTDLL.@)
*/
void WINAPI RtlUnwind( void *frame, void *target_ip, EXCEPTION_RECORD *rec, void *retval )
{
CONTEXT context;
RtlUnwindEx( frame, target_ip, rec, retval, &context, NULL );
}
/*******************************************************************
* _local_unwind (NTDLL.@)
*/
void WINAPI _local_unwind( void *frame, void *target_ip )
{
CONTEXT context;
RtlUnwindEx( frame, target_ip, NULL, NULL, &context, NULL );
}
extern LONG __C_ExecuteExceptionFilter(PEXCEPTION_POINTERS ptrs, PVOID frame,
PEXCEPTION_FILTER filter,
PUCHAR nonvolatile);
__ASM_GLOBAL_FUNC( __C_ExecuteExceptionFilter,
"stp x29, x30, [sp, #-96]!\n\t"
__ASM_SEH(".seh_save_fplr_x 96\n\t")
"stp x19, x20, [sp, #16]\n\t"
__ASM_SEH(".seh_save_regp x19, 16\n\t")
"stp x21, x22, [sp, #32]\n\t"
__ASM_SEH(".seh_save_regp x21, 32\n\t")
"stp x23, x24, [sp, #48]\n\t"
__ASM_SEH(".seh_save_regp x23, 48\n\t")
"stp x25, x26, [sp, #64]\n\t"
__ASM_SEH(".seh_save_regp x25, 64\n\t")
"stp x27, x28, [sp, #80]\n\t"
__ASM_SEH(".seh_save_regp x27, 80\n\t")
"mov x29, sp\n\t"
__ASM_SEH(".seh_set_fp\n\t")
__ASM_SEH(".seh_endprologue\n\t")
__ASM_CFI(".cfi_def_cfa x29, 96\n\t")
__ASM_CFI(".cfi_offset x29, -96\n\t")
__ASM_CFI(".cfi_offset x30, -88\n\t")
__ASM_CFI(".cfi_offset x19, -80\n\t")
__ASM_CFI(".cfi_offset x20, -72\n\t")
__ASM_CFI(".cfi_offset x21, -64\n\t")
__ASM_CFI(".cfi_offset x22, -56\n\t")
__ASM_CFI(".cfi_offset x23, -48\n\t")
__ASM_CFI(".cfi_offset x24, -40\n\t")
__ASM_CFI(".cfi_offset x25, -32\n\t")
__ASM_CFI(".cfi_offset x26, -24\n\t")
__ASM_CFI(".cfi_offset x27, -16\n\t")
__ASM_CFI(".cfi_offset x28, -8\n\t")
"ldp x19, x20, [x3, #0]\n\t"
"ldp x21, x22, [x3, #16]\n\t"
"ldp x23, x24, [x3, #32]\n\t"
"ldp x25, x26, [x3, #48]\n\t"
"ldp x27, x28, [x3, #64]\n\t"
/* Overwrite the frame parameter with Fp from the
* nonvolatile regs */
"ldr x1, [x3, #80]\n\t"
"blr x2\n\t"
"ldp x19, x20, [sp, #16]\n\t"
"ldp x21, x22, [sp, #32]\n\t"
"ldp x23, x24, [sp, #48]\n\t"
"ldp x25, x26, [sp, #64]\n\t"
"ldp x27, x28, [sp, #80]\n\t"
"ldp x29, x30, [sp], #96\n\t"
"ret")
extern void __C_ExecuteTerminationHandler(BOOL abnormal, PVOID frame,
PTERMINATION_HANDLER handler,
PUCHAR nonvolatile);
/* This is, implementation wise, identical to __C_ExecuteExceptionFilter. */
__ASM_GLOBAL_FUNC( __C_ExecuteTerminationHandler,
"b " __ASM_NAME("__C_ExecuteExceptionFilter") "\n\t");
/*******************************************************************
* __C_specific_handler (NTDLL.@)
*/
EXCEPTION_DISPOSITION WINAPI __C_specific_handler( EXCEPTION_RECORD *rec,
void *frame,
CONTEXT *context,
struct _DISPATCHER_CONTEXT *dispatch )
{
SCOPE_TABLE *table = dispatch->HandlerData;
ULONG i;
DWORD64 ControlPc = dispatch->ControlPc;
TRACE( "%p %p %p %p\n", rec, frame, context, dispatch );
if (TRACE_ON(seh)) dump_scope_table( dispatch->ImageBase, table );
if (dispatch->ControlPcIsUnwound)
ControlPc -= 4;
if (rec->ExceptionFlags & (EH_UNWINDING | EH_EXIT_UNWIND))
{
for (i = dispatch->ScopeIndex; i < table->Count; i++)
{
if (ControlPc >= dispatch->ImageBase + table->ScopeRecord[i].BeginAddress &&
ControlPc < dispatch->ImageBase + table->ScopeRecord[i].EndAddress)
{
PTERMINATION_HANDLER handler;
if (table->ScopeRecord[i].JumpTarget) continue;
if (rec->ExceptionFlags & EH_TARGET_UNWIND &&
dispatch->TargetPc >= dispatch->ImageBase + table->ScopeRecord[i].BeginAddress &&
dispatch->TargetPc < dispatch->ImageBase + table->ScopeRecord[i].EndAddress)
{
break;
}
handler = (PTERMINATION_HANDLER)(dispatch->ImageBase + table->ScopeRecord[i].HandlerAddress);
dispatch->ScopeIndex = i+1;
TRACE( "calling __finally %p frame %p\n", handler, frame );
__C_ExecuteTerminationHandler( TRUE, frame, handler,
dispatch->NonVolatileRegisters );
}
}
return ExceptionContinueSearch;
}
for (i = dispatch->ScopeIndex; i < table->Count; i++)
{
if (ControlPc >= dispatch->ImageBase + table->ScopeRecord[i].BeginAddress &&
ControlPc < dispatch->ImageBase + table->ScopeRecord[i].EndAddress)
{
if (!table->ScopeRecord[i].JumpTarget) continue;
if (table->ScopeRecord[i].HandlerAddress != EXCEPTION_EXECUTE_HANDLER)
{
EXCEPTION_POINTERS ptrs;
PEXCEPTION_FILTER filter;
filter = (PEXCEPTION_FILTER)(dispatch->ImageBase + table->ScopeRecord[i].HandlerAddress);
ptrs.ExceptionRecord = rec;
ptrs.ContextRecord = context;
TRACE( "calling filter %p ptrs %p frame %p\n", filter, &ptrs, frame );
switch (__C_ExecuteExceptionFilter( &ptrs, frame, filter,
dispatch->NonVolatileRegisters ))
{
case EXCEPTION_EXECUTE_HANDLER:
break;
case EXCEPTION_CONTINUE_SEARCH:
continue;
case EXCEPTION_CONTINUE_EXECUTION:
return ExceptionContinueExecution;
}
}
TRACE( "unwinding to target %lx\n", dispatch->ImageBase + table->ScopeRecord[i].JumpTarget );
RtlUnwindEx( frame, (char *)dispatch->ImageBase + table->ScopeRecord[i].JumpTarget,
rec, 0, dispatch->ContextRecord, dispatch->HistoryTable );
}
}
return ExceptionContinueSearch;
}
/***********************************************************************
* RtlRaiseException (NTDLL.@)
*/
__ASM_STDCALL_FUNC( RtlRaiseException, 4,
"sub sp, sp, #0x3b0\n\t" /* 0x390 (context) + 0x20 */
"stp x29, x30, [sp]\n\t"
__ASM_SEH(".seh_stackalloc 0x3b0\n\t")
__ASM_SEH(".seh_save_fplr 0\n\t")
__ASM_SEH(".seh_endprologue\n\t")
__ASM_CFI(".cfi_def_cfa x29, 944\n\t")
__ASM_CFI(".cfi_offset x30, -936\n\t")
__ASM_CFI(".cfi_offset x29, -944\n\t")
"mov x29, sp\n\t"
"str x0, [sp, #0x10]\n\t"
"add x0, sp, #0x20\n\t"
"bl " __ASM_NAME("RtlCaptureContext") "\n\t"
"add x1, sp, #0x20\n\t" /* context pointer */
"add x2, sp, #0x3b0\n\t" /* orig stack pointer */
"str x2, [x1, #0x100]\n\t" /* context->Sp */
"ldr x0, [sp, #0x10]\n\t" /* original first parameter */
"str x0, [x1, #0x08]\n\t" /* context->X0 */
"ldp x4, x5, [sp]\n\t" /* frame pointer, return address */
"stp x4, x5, [x1, #0xf0]\n\t" /* context->Fp, Lr */
"str x5, [x1, #0x108]\n\t" /* context->Pc */
"str x5, [x0, #0x10]\n\t" /* rec->ExceptionAddress */
"mov x2, #1\n\t"
"bl " __ASM_NAME("NtRaiseException") "\n\t"
"bl " __ASM_NAME("RtlRaiseStatus") /* does not return */ );
/*************************************************************************
* 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;
}
/***********************************************************************
* signal_start_thread
*/
__ASM_GLOBAL_FUNC( signal_start_thread,
"mov sp, x0\n\t" /* context */
"mov x1, #1\n\t"
"b " __ASM_NAME("NtContinue") )
/**********************************************************************
* DbgBreakPoint (NTDLL.@)
*/
__ASM_STDCALL_FUNC( DbgBreakPoint, 0, "brk #0; ret"
"\n\tnop; nop; nop; nop; nop; nop; nop; nop"
"\n\tnop; nop; nop; nop; nop; nop" );
/**********************************************************************
* DbgUserBreakPoint (NTDLL.@)
*/
__ASM_STDCALL_FUNC( DbgUserBreakPoint, 0, "brk #0; ret"
"\n\tnop; nop; nop; nop; nop; nop; nop; nop"
"\n\tnop; nop; nop; nop; nop; nop" );
/**********************************************************************
* NtCurrentTeb (NTDLL.@)
*/
TEB * WINAPI NtCurrentTeb(void)
{
return unix_funcs->NtCurrentTeb();
}
#endif /* __aarch64__ */
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