diff --git a/dlls/dbghelp/cpu_arm64.c b/dlls/dbghelp/cpu_arm64.c index 26407f7e007..c816fe3947f 100644 --- a/dlls/dbghelp/cpu_arm64.c +++ b/dlls/dbghelp/cpu_arm64.c @@ -46,11 +46,109 @@ static unsigned arm64_get_addr(HANDLE hThread, const CONTEXT* ctx, } } +#ifdef __aarch64__ +enum st_mode {stm_start, stm_arm64, stm_done}; + +/* indexes in Reserved array */ +#define __CurrentModeCount 0 + +#define curr_mode (frame->Reserved[__CurrentModeCount] & 0x0F) +#define curr_count (frame->Reserved[__CurrentModeCount] >> 4) + +#define set_curr_mode(m) {frame->Reserved[__CurrentModeCount] &= ~0x0F; frame->Reserved[__CurrentModeCount] |= (m & 0x0F);} +#define inc_curr_count() (frame->Reserved[__CurrentModeCount] += 0x10) + +/* fetch_next_frame() + * + * modify (at least) context.Pc using unwind information + * either out of debug info (dwarf), or simple Lr trace + */ +static BOOL fetch_next_frame(struct cpu_stack_walk* csw, + CONTEXT* context, DWORD_PTR curr_pc) +{ + DWORD_PTR xframe; + DWORD_PTR oldReturn = context->X30; + + if (dwarf2_virtual_unwind(csw, curr_pc, context, &xframe)) + { + context->Sp = xframe; + context->Pc = oldReturn; + return TRUE; + } + + if (context->Pc == context->X30) return FALSE; + context->Pc = oldReturn; + + return TRUE; +} + static BOOL arm64_stack_walk(struct cpu_stack_walk* csw, LPSTACKFRAME64 frame, CONTEXT* context) { - FIXME("not done for ARM64\n"); + unsigned deltapc = curr_count <= 1 ? 0 : 4; + + /* sanity check */ + if (curr_mode >= stm_done) return FALSE; + + TRACE("Enter: PC=%s Frame=%s Return=%s Stack=%s Mode=%s Count=%s\n", + wine_dbgstr_addr(&frame->AddrPC), + wine_dbgstr_addr(&frame->AddrFrame), + wine_dbgstr_addr(&frame->AddrReturn), + wine_dbgstr_addr(&frame->AddrStack), + curr_mode == stm_start ? "start" : "ARM64", + wine_dbgstr_longlong(curr_count)); + + if (curr_mode == stm_start) + { + /* Init done */ + set_curr_mode(stm_arm64); + frame->AddrReturn.Mode = frame->AddrStack.Mode = AddrModeFlat; + /* don't set up AddrStack on first call. Either the caller has set it up, or + * we will get it in the next frame + */ + memset(&frame->AddrBStore, 0, sizeof(frame->AddrBStore)); + } + else + { + if (context->Sp != frame->AddrStack.Offset) FIXME("inconsistent Stack Pointer\n"); + if (context->Pc != frame->AddrPC.Offset) FIXME("inconsistent Program Counter\n"); + + if (frame->AddrReturn.Offset == 0) goto done_err; + if (!fetch_next_frame(csw, context, frame->AddrPC.Offset - deltapc)) + goto done_err; + } + + memset(&frame->Params, 0, sizeof(frame->Params)); + + /* set frame information */ + frame->AddrStack.Offset = context->Sp; + frame->AddrReturn.Offset = context->X30; + frame->AddrFrame.Offset = context->X29; + frame->AddrPC.Offset = context->Pc; + + frame->Far = TRUE; + frame->Virtual = TRUE; + inc_curr_count(); + + TRACE("Leave: PC=%s Frame=%s Return=%s Stack=%s Mode=%s Count=%s FuncTable=%p\n", + wine_dbgstr_addr(&frame->AddrPC), + wine_dbgstr_addr(&frame->AddrFrame), + wine_dbgstr_addr(&frame->AddrReturn), + wine_dbgstr_addr(&frame->AddrStack), + curr_mode == stm_start ? "start" : "ARM", + wine_dbgstr_longlong(curr_count), + frame->FuncTableEntry); + + return TRUE; +done_err: + set_curr_mode(stm_done); return FALSE; } +#else +static BOOL arm64_stack_walk(struct cpu_stack_walk* csw, LPSTACKFRAME64 frame, CONTEXT* context) +{ + return FALSE; +} +#endif static unsigned arm64_map_dwarf_register(unsigned regno) {