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dbghelp: For the internal functions on x86_64 stack unwinding, only rely on CONTEXT information, and manage STACKFRAME64 updates in outer functions.

This commit is contained in:
Eric Pouech 2011-03-13 21:30:59 +01:00 committed by Alexandre Julliard
parent ab9cc3e9dc
commit b3d7643c96
1 changed files with 20 additions and 20 deletions
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40
dlls/dbghelp/cpu_x86_64.c
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@ -349,21 +349,18 @@ static BOOL is_inside_epilog(struct cpu_stack_walk* csw, DWORD64 pc)
}
}
static BOOL default_unwind(struct cpu_stack_walk* csw, LPSTACKFRAME64 frame, CONTEXT* context)
static BOOL default_unwind(struct cpu_stack_walk* csw, CONTEXT* context)
{
if (!sw_read_mem(csw, frame->AddrStack.Offset,
&frame->AddrReturn.Offset, sizeof(DWORD64)))
if (!sw_read_mem(csw, context->Rsp, &context->Rip, sizeof(DWORD64)))
{
WARN("Cannot read new frame offset %s\n", wine_dbgstr_longlong(frame->AddrStack.Offset));
WARN("Cannot read new frame offset %s\n", wine_dbgstr_longlong(context->Rsp));
return FALSE;
}
context->Rip = frame->AddrReturn.Offset;
frame->AddrStack.Offset += sizeof(DWORD64);
context->Rsp += sizeof(DWORD64);
return TRUE;
}
static BOOL interpret_function_table_entry(struct cpu_stack_walk* csw, LPSTACKFRAME64 frame,
static BOOL interpret_function_table_entry(struct cpu_stack_walk* csw,
CONTEXT* context, RUNTIME_FUNCTION* function, DWORD64 base)
{
char buffer[sizeof(UNWIND_INFO) + 256 * sizeof(UNWIND_CODE)];
@ -375,9 +372,7 @@ static BOOL interpret_function_table_entry(struct cpu_stack_walk* csw, LPSTACKFR
/* FIXME: we have some assumptions here */
assert(context);
if (context->Rsp != frame->AddrStack.Offset) FIXME("unconsistent Stack Pointer\n");
if (context->Rip != frame->AddrPC.Offset) FIXME("unconsistent Instruction Pointer\n");
dump_unwind_info(csw->hProcess, sw_module_base(csw, frame->AddrPC.Offset), frame->FuncTableEntry);
dump_unwind_info(csw->hProcess, sw_module_base(csw, context->Rip), function);
newframe = context->Rsp;
for (;;)
{
@ -399,15 +394,15 @@ static BOOL interpret_function_table_entry(struct cpu_stack_walk* csw, LPSTACKFR
newframe = get_int_reg(context, info->FrameRegister) - info->FrameOffset * 16;
/* check if in prolog */
if (frame->AddrPC.Offset >= base + function->BeginAddress &&
frame->AddrPC.Offset < base + function->BeginAddress + info->SizeOfProlog)
if (context->Rip >= base + function->BeginAddress &&
context->Rip < base + function->BeginAddress + info->SizeOfProlog)
{
prolog_offset = frame->AddrPC.Offset - base - function->BeginAddress;
prolog_offset = context->Rip - base - function->BeginAddress;
}
else
{
prolog_offset = ~0;
if (is_inside_epilog(csw, frame->AddrPC.Offset))
if (is_inside_epilog(csw, context->Rip))
{
FIXME("epilog management not fully done\n");
/* interpret_epilog((const BYTE*)frame->AddrPC.Offset, context); */
@ -470,8 +465,7 @@ static BOOL interpret_function_table_entry(struct cpu_stack_walk* csw, LPSTACKFR
&handler_data, sizeof(handler_data))) return FALSE;
function = &handler_data.chain; /* restart with the chained info */
}
frame->AddrStack.Offset = context->Rsp;
return default_unwind(csw, frame, context);
return default_unwind(csw, context);
}
static BOOL x86_64_stack_walk(struct cpu_stack_walk* csw, LPSTACKFRAME64 frame, CONTEXT* context)
@ -511,6 +505,8 @@ static BOOL x86_64_stack_walk(struct cpu_stack_walk* csw, LPSTACKFRAME64 frame,
}
else
{
if (context->Rsp != frame->AddrStack.Offset) FIXME("inconsistent Stack Pointer\n");
if (frame->AddrReturn.Offset == 0) goto done_err;
frame->AddrPC = frame->AddrReturn;
deltapc = 1;
@ -521,13 +517,12 @@ static BOOL x86_64_stack_walk(struct cpu_stack_walk* csw, LPSTACKFRAME64 frame,
frame->AddrStack.Mode = frame->AddrFrame.Mode = frame->AddrReturn.Mode = AddrModeFlat;
if (frame->FuncTableEntry)
{
if (!interpret_function_table_entry(csw, frame, context, frame->FuncTableEntry, base))
if (!interpret_function_table_entry(csw, context, frame->FuncTableEntry, base))
goto done_err;
}
else if (dwarf2_virtual_unwind(csw, frame->AddrPC.Offset - deltapc, context, &cfa))
{
frame->AddrStack.Offset = context->Rsp = cfa;
frame->AddrReturn.Offset = context->Rip;
context->Rsp = cfa;
TRACE("next function rip=%016lx\n", context->Rip);
TRACE(" rax=%016lx rbx=%016lx rcx=%016lx rdx=%016lx\n",
context->Rax, context->Rbx, context->Rcx, context->Rdx);
@ -538,10 +533,15 @@ static BOOL x86_64_stack_walk(struct cpu_stack_walk* csw, LPSTACKFRAME64 frame,
TRACE(" r12=%016lx r13=%016lx r14=%016lx r15=%016lx\n",
context->R12, context->R13, context->R14, context->R15);
}
else if (!default_unwind(csw, frame, context)) goto done_err;
else if (!default_unwind(csw, context)) goto done_err;
memset(&frame->Params, 0, sizeof(frame->Params));
/* set frame information */
frame->AddrStack.Offset = context->Rsp;
frame->AddrFrame.Offset = context->Rbp;
frame->AddrReturn.Offset = context->Rip;
frame->Far = TRUE;
frame->Virtual = TRUE;