| /* |
| * File cpu_arm.c |
| * |
| * Copyright (C) 2009 Eric Pouech |
| * Copyright (C) 2010, 2011 André Hentschel |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with this library; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA |
| */ |
| |
| #include <assert.h> |
| |
| #include "ntstatus.h" |
| #define WIN32_NO_STATUS |
| #include "dbghelp_private.h" |
| #include "winternl.h" |
| #include "wine/debug.h" |
| |
| WINE_DEFAULT_DEBUG_CHANNEL(dbghelp); |
| |
| static BOOL arm_get_addr(HANDLE hThread, const CONTEXT* ctx, |
| enum cpu_addr ca, ADDRESS64* addr) |
| { |
| addr->Mode = AddrModeFlat; |
| addr->Segment = 0; /* don't need segment */ |
| switch (ca) |
| { |
| #ifdef __arm__ |
| case cpu_addr_pc: addr->Offset = ctx->Pc; return TRUE; |
| case cpu_addr_stack: addr->Offset = ctx->Sp; return TRUE; |
| case cpu_addr_frame: addr->Offset = ctx->Fp; return TRUE; |
| #endif |
| default: addr->Mode = -1; |
| return FALSE; |
| } |
| } |
| |
| #ifdef __arm__ |
| enum st_mode {stm_start, stm_arm, 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 oldReturn = context->Lr; |
| |
| if (dwarf2_virtual_unwind(csw, curr_pc, context, &xframe)) |
| { |
| context->Sp = xframe; |
| context->Pc = oldReturn; |
| return TRUE; |
| } |
| |
| if (context->Pc == context->Lr) return FALSE; |
| context->Pc = oldReturn; |
| |
| return TRUE; |
| } |
| |
| static BOOL arm_stack_walk(struct cpu_stack_walk* csw, LPSTACKFRAME64 frame, CONTEXT* context) |
| { |
| 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" : "ARM", |
| wine_dbgstr_longlong(curr_count)); |
| |
| if (curr_mode == stm_start) |
| { |
| /* Init done */ |
| set_curr_mode(stm_arm); |
| 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->Lr; |
| frame->AddrFrame.Offset = context->Fp; |
| 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 arm_stack_walk(struct cpu_stack_walk* csw, LPSTACKFRAME64 frame, CONTEXT* context) |
| { |
| return FALSE; |
| } |
| #endif |
| |
| static unsigned arm_map_dwarf_register(unsigned regno, BOOL eh_frame) |
| { |
| if (regno <= 15) return CV_ARM_R0 + regno; |
| if (regno == 128) return CV_ARM_CPSR; |
| |
| FIXME("Don't know how to map register %d\n", regno); |
| return CV_ARM_NOREG; |
| } |
| |
| static void* arm_fetch_context_reg(CONTEXT* ctx, unsigned regno, unsigned* size) |
| { |
| #ifdef __arm__ |
| switch (regno) |
| { |
| case CV_ARM_R0 + 0: *size = sizeof(ctx->R0); return &ctx->R0; |
| case CV_ARM_R0 + 1: *size = sizeof(ctx->R1); return &ctx->R1; |
| case CV_ARM_R0 + 2: *size = sizeof(ctx->R2); return &ctx->R2; |
| case CV_ARM_R0 + 3: *size = sizeof(ctx->R3); return &ctx->R3; |
| case CV_ARM_R0 + 4: *size = sizeof(ctx->R4); return &ctx->R4; |
| case CV_ARM_R0 + 5: *size = sizeof(ctx->R5); return &ctx->R5; |
| case CV_ARM_R0 + 6: *size = sizeof(ctx->R6); return &ctx->R6; |
| case CV_ARM_R0 + 7: *size = sizeof(ctx->R7); return &ctx->R7; |
| case CV_ARM_R0 + 8: *size = sizeof(ctx->R8); return &ctx->R8; |
| case CV_ARM_R0 + 9: *size = sizeof(ctx->R9); return &ctx->R9; |
| case CV_ARM_R0 + 10: *size = sizeof(ctx->R10); return &ctx->R10; |
| case CV_ARM_R0 + 11: *size = sizeof(ctx->Fp); return &ctx->Fp; |
| case CV_ARM_R0 + 12: *size = sizeof(ctx->Ip); return &ctx->Ip; |
| |
| case CV_ARM_SP: *size = sizeof(ctx->Sp); return &ctx->Sp; |
| case CV_ARM_LR: *size = sizeof(ctx->Lr); return &ctx->Lr; |
| case CV_ARM_PC: *size = sizeof(ctx->Pc); return &ctx->Pc; |
| case CV_ARM_CPSR: *size = sizeof(ctx->Cpsr); return &ctx->Cpsr; |
| } |
| #endif |
| FIXME("Unknown register %x\n", regno); |
| return NULL; |
| } |
| |
| static const char* arm_fetch_regname(unsigned regno) |
| { |
| switch (regno) |
| { |
| case CV_ARM_R0 + 0: return "r0"; |
| case CV_ARM_R0 + 1: return "r1"; |
| case CV_ARM_R0 + 2: return "r2"; |
| case CV_ARM_R0 + 3: return "r3"; |
| case CV_ARM_R0 + 4: return "r4"; |
| case CV_ARM_R0 + 5: return "r5"; |
| case CV_ARM_R0 + 6: return "r6"; |
| case CV_ARM_R0 + 7: return "r7"; |
| case CV_ARM_R0 + 8: return "r8"; |
| case CV_ARM_R0 + 9: return "r9"; |
| case CV_ARM_R0 + 10: return "r10"; |
| case CV_ARM_R0 + 11: return "r11"; |
| case CV_ARM_R0 + 12: return "r12"; |
| |
| case CV_ARM_SP: return "sp"; |
| case CV_ARM_LR: return "lr"; |
| case CV_ARM_PC: return "pc"; |
| case CV_ARM_CPSR: return "cpsr"; |
| } |
| FIXME("Unknown register %x\n", regno); |
| return NULL; |
| } |
| |
| static BOOL arm_fetch_minidump_thread(struct dump_context* dc, unsigned index, unsigned flags, const CONTEXT* ctx) |
| { |
| if (ctx->ContextFlags && (flags & ThreadWriteInstructionWindow)) |
| { |
| /* FIXME: crop values across module boundaries, */ |
| #ifdef __arm__ |
| ULONG base = ctx->Pc <= 0x80 ? 0 : ctx->Pc - 0x80; |
| minidump_add_memory_block(dc, base, ctx->Pc + 0x80 - base, 0); |
| #endif |
| } |
| |
| return TRUE; |
| } |
| |
| static BOOL arm_fetch_minidump_module(struct dump_context* dc, unsigned index, unsigned flags) |
| { |
| /* FIXME: actually, we should probably take care of FPO data, unless it's stored in |
| * function table minidump stream |
| */ |
| return FALSE; |
| } |
| |
| DECLSPEC_HIDDEN struct cpu cpu_arm = { |
| IMAGE_FILE_MACHINE_ARMNT, |
| 4, |
| CV_ARM_R0 + 11, |
| arm_get_addr, |
| arm_stack_walk, |
| NULL, |
| arm_map_dwarf_register, |
| arm_fetch_context_reg, |
| arm_fetch_regname, |
| arm_fetch_minidump_thread, |
| arm_fetch_minidump_module, |
| }; |