mirror of
https://github.com/libretro/ppsspp.git
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137 lines
3.8 KiB
C++
137 lines
3.8 KiB
C++
// Copyright (c) 2012- PPSSPP Project.
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, version 2.0 or later versions.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License 2.0 for more details.
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// A copy of the GPL 2.0 should have been included with the program.
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// If not, see http://www.gnu.org/licenses/
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// Official git repository and contact information can be found at
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// https://github.com/hrydgard/ppsspp and http://www.ppsspp.org/.
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#include <stdlib.h>
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#include "JitCommon.h"
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#include "Common/StringUtils.h"
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#include "ext/disarm.h"
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#include "ext/udis86/udis86.h"
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namespace MIPSComp {
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#if defined(ARM)
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ArmJit *jit;
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#else
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Jit *jit;
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#endif
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}
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// We compile this for x86 as well because it may be useful when developing the ARM JIT on a PC.
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std::vector<std::string> DisassembleArm2(const u8 *data, int size) {
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std::vector<std::string> lines;
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char temp[256];
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int bkpt_count = 0;
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for (int i = 0; i < size; i += 4) {
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const u32 *codePtr = (const u32 *)(data + i);
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u32 inst = codePtr[0];
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u32 next = (i < size - 4) ? codePtr[1] : 0;
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// MAGIC SPECIAL CASE for MOVW/MOVT readability!
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if ((inst & 0x0FF00000) == 0x03000000 && (next & 0x0FF00000) == 0x03400000) {
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u32 low = ((inst & 0x000F0000) >> 4) | (inst & 0x0FFF);
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u32 hi = ((next & 0x000F0000) >> 4) | (next & 0x0FFF);
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int reg0 = (inst & 0x0000F000) >> 12;
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int reg1 = (next & 0x0000F000) >> 12;
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if (reg0 == reg1) {
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snprintf(temp, sizeof(temp), "MOV32 %s, %04x%04x", ArmRegName(reg0), hi, low);
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lines.push_back(temp);
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i += 4;
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continue;
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}
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}
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ArmDis((u32)(intptr_t)codePtr, inst, temp, sizeof(temp), false);
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std::string buf = temp;
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if (buf == "BKPT 1") {
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bkpt_count++;
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} else {
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if (bkpt_count) {
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lines.push_back(StringFromFormat("BKPT 1 (x%i)", bkpt_count));
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bkpt_count = 0;
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}
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lines.push_back(buf);
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}
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}
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if (bkpt_count) {
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lines.push_back(StringFromFormat("BKPT 1 (x%i)", bkpt_count));
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}
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return lines;
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}
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#ifndef ARM
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const char *ppsspp_resolver(struct ud*,
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uint64_t addr,
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int64_t *offset) {
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// For some reason these two don't seem to trigger..
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if (addr >= (uint64_t)(¤tMIPS->r[0]) && addr < (uint64_t)¤tMIPS->r[32]) {
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*offset = addr - (uint64_t)(¤tMIPS->r[0]);
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return "mips.r";
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}
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if (addr >= (uint64_t)(¤tMIPS->v[0]) && addr < (uint64_t)¤tMIPS->v[128]) {
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*offset = addr - (uint64_t)(¤tMIPS->v[0]);
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return "mips.v";
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}
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// But these do.
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if (MIPSComp::jit->IsInSpace((u8 *)(intptr_t)addr)) {
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*offset = addr - (uint64_t)MIPSComp::jit->GetBasePtr();
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return "jitcode";
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}
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if (MIPSComp::jit->Asm().IsInSpace((u8 *)(intptr_t)addr)) {
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*offset = addr - (uint64_t)MIPSComp::jit->Asm().GetBasePtr();
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return "dispatcher";
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}
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return NULL;
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}
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std::vector<std::string> DisassembleX86(const u8 *data, int size) {
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std::vector<std::string> lines;
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ud_t ud_obj;
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ud_init(&ud_obj);
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#ifdef _M_X64
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ud_set_mode(&ud_obj, 64);
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#else
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ud_set_mode(&ud_obj, 32);
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#endif
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ud_set_pc(&ud_obj, (intptr_t)data);
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ud_set_vendor(&ud_obj, UD_VENDOR_ANY);
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ud_set_syntax(&ud_obj, UD_SYN_INTEL);
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ud_set_sym_resolver(&ud_obj, &ppsspp_resolver);
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ud_set_input_buffer(&ud_obj, data, size);
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int int3_count = 0;
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while (ud_disassemble(&ud_obj) != 0) {
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std::string str = ud_insn_asm(&ud_obj);
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if (str == "int3") {
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int3_count++;
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} else {
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if (int3_count) {
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lines.push_back(StringFromFormat("int3 (x%i)", int3_count));
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int3_count = 0;
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}
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lines.push_back(str);
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}
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}
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if (int3_count) {
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lines.push_back(StringFromFormat("int3 (x%i)", int3_count));
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}
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return lines;
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}
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#endif |