ppsspp/Core/MIPS/JitCommon/JitCommon.cpp

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// Copyright (c) 2012- PPSSPP Project.
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, version 2.0 or later versions.
// This program 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 General Public License 2.0 for more details.
// A copy of the GPL 2.0 should have been included with the program.
// If not, see http://www.gnu.org/licenses/
// Official git repository and contact information can be found at
// https://github.com/hrydgard/ppsspp and http://www.ppsspp.org/.
#include <stdlib.h>
#include "JitCommon.h"
#include "Common/StringUtils.h"
#include "ext/disarm.h"
#include "ext/udis86/udis86.h"
namespace MIPSComp {
Jit *jit;
}
// We compile this for x86 as well because it may be useful when developing the ARM JIT on a PC.
std::vector<std::string> DisassembleArm2(const u8 *data, int size) {
std::vector<std::string> lines;
char temp[256];
int bkpt_count = 0;
for (int i = 0; i < size; i += 4) {
const u32 *codePtr = (const u32 *)(data + i);
u32 inst = codePtr[0];
u32 next = (i < size - 4) ? codePtr[1] : 0;
// MAGIC SPECIAL CASE for MOVW/MOVT readability!
if ((inst & 0x0FF00000) == 0x03000000 && (next & 0x0FF00000) == 0x03400000) {
u32 low = ((inst & 0x000F0000) >> 4) | (inst & 0x0FFF);
u32 hi = ((next & 0x000F0000) >> 4) | (next & 0x0FFF);
int reg0 = (inst & 0x0000F000) >> 12;
int reg1 = (next & 0x0000F000) >> 12;
if (reg0 == reg1) {
snprintf(temp, sizeof(temp), "MOV32 %s, %04x%04x", ArmRegName(reg0), hi, low);
// sprintf(temp, "%08x MOV32? %s, %04x%04x", (u32)inst, ArmRegName(reg0), hi, low);
lines.push_back(temp);
i += 4;
continue;
}
}
ArmDis((u32)(intptr_t)codePtr, inst, temp, sizeof(temp), false);
std::string buf = temp;
if (buf == "BKPT 1") {
bkpt_count++;
} else {
if (bkpt_count) {
lines.push_back(StringFromFormat("BKPT 1 (x%i)", bkpt_count));
bkpt_count = 0;
}
lines.push_back(buf);
}
}
if (bkpt_count) {
lines.push_back(StringFromFormat("BKPT 1 (x%i)", bkpt_count));
}
return lines;
}
#ifndef ARM
std::vector<std::string> DisassembleX86(const u8 *data, int size) {
std::vector<std::string> lines;
ud_t ud_obj;
ud_init(&ud_obj);
#ifdef _M_X64
ud_set_mode(&ud_obj, 64);
#else
ud_set_mode(&ud_obj, 32);
#endif
ud_set_pc(&ud_obj, (intptr_t)data);
ud_set_vendor(&ud_obj, UD_VENDOR_ANY);
ud_set_syntax(&ud_obj, UD_SYN_INTEL);
ud_set_input_buffer(&ud_obj, data, size);
int int3_count = 0;
while (ud_disassemble(&ud_obj) != 0) {
std::string str = ud_insn_asm(&ud_obj);
if (str == "int3") {
int3_count++;
} else {
if (int3_count) {
lines.push_back(StringFromFormat("int3 (x%i)", int3_count));
int3_count = 0;
}
lines.push_back(str);
}
}
if (int3_count) {
lines.push_back(StringFromFormat("int3 (x%i)", int3_count));
}
return lines;
}
#endif