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Merge pull request #95 from lioncash/disassembler

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core: Make the ARM disassembler use std::string internally
This commit is contained in:
bunnei 2014-09-08 00:10:13 -04:00
commit 335082e74e
5 changed files with 147 additions and 195 deletions
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2
src/citra_qt/debugger/callstack.cpp
View File

@ -37,7 +37,7 @@ void CallstackWidget::OnCPUStepped()
/* TODO (mattvail) clean me, move to debugger interface */ /* TODO (mattvail) clean me, move to debugger interface */
u32 insn = Memory::Read32(call_addr); u32 insn = Memory::Read32(call_addr);
if (disasm->decode(insn) == OP_BL) if (disasm->Decode(insn) == OP_BL)
{ {
std::string name; std::string name;
// ripped from disasm // ripped from disasm

8
src/citra_qt/debugger/disassembler.cpp
View File

@ -36,22 +36,20 @@ QVariant DisassemblerModel::data(const QModelIndex& index, int role) const {
switch (role) { switch (role) {
case Qt::DisplayRole: case Qt::DisplayRole:
{ {
static char result[255];
u32 address = base_address + index.row() * 4; u32 address = base_address + index.row() * 4;
u32 instr = Memory::Read32(address); u32 instr = Memory::Read32(address);
ARM_Disasm::disasm(address, instr, result); std::string disassembly = ARM_Disasm::Disassemble(address, instr);
if (index.column() == 0) { if (index.column() == 0) {
return QString("0x%1").arg((uint)(address), 8, 16, QLatin1Char('0')); return QString("0x%1").arg((uint)(address), 8, 16, QLatin1Char('0'));
} else if (index.column() == 1) { } else if (index.column() == 1) {
return QString::fromLatin1(result); return QString::fromStdString(disassembly);
} else if (index.column() == 2) { } else if (index.column() == 2) {
if(Symbols::HasSymbol(address)) { if(Symbols::HasSymbol(address)) {
TSymbol symbol = Symbols::GetSymbol(address); TSymbol symbol = Symbols::GetSymbol(address);
return QString("%1 - Size:%2").arg(QString::fromStdString(symbol.name)) return QString("%1 - Size:%2").arg(QString::fromStdString(symbol.name))
.arg(symbol.size / 4); // divide by 4 to get instruction count .arg(symbol.size / 4); // divide by 4 to get instruction count
} else if (ARM_Disasm::decode(instr) == OP_BL) { } else if (ARM_Disasm::Decode(instr) == OP_BL) {
u32 offset = instr & 0xFFFFFF; u32 offset = instr & 0xFFFFFF;
// Sign-extend the 24-bit offset // Sign-extend the 24-bit offset

258
src/core/arm/disassembler/arm_disasm.cpp
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@ -1,8 +1,8 @@
// Copyright 2006 The Android Open Source Project // Copyright 2006 The Android Open Source Project
#include <stdio.h> #include <string>
#include <string.h>
#include "common/string_util.h"
#include "core/arm/disassembler/arm_disasm.h" #include "core/arm/disassembler/arm_disasm.h"
static const char *cond_names[] = { static const char *cond_names[] = {
@ -135,20 +135,14 @@ static const char* cond_to_str(int cond) {
return cond_names[cond]; return cond_names[cond];
} }
char *ARM_Disasm::disasm(uint32_t addr, uint32_t insn, char *result) std::string ARM_Disasm::Disassemble(uint32_t addr, uint32_t insn)
{ {
static char buf[80]; Opcode opcode = Decode(insn);
char *ptr;
ptr = result ? result : buf;
Opcode opcode = decode(insn);
switch (opcode) { switch (opcode) {
case OP_INVALID: case OP_INVALID:
sprintf(ptr, "Invalid"); return "Invalid";
return ptr;
case OP_UNDEFINED: case OP_UNDEFINED:
sprintf(ptr, "Undefined"); return "Undefined";
return ptr;
case OP_ADC: case OP_ADC:
case OP_ADD: case OP_ADD:
case OP_AND: case OP_AND:
@ -165,28 +159,26 @@ char *ARM_Disasm::disasm(uint32_t addr, uint32_t insn, char *result)
case OP_SUB: case OP_SUB:
case OP_TEQ: case OP_TEQ:
case OP_TST: case OP_TST:
return disasm_alu(opcode, insn, ptr); return DisassembleALU(opcode, insn);
case OP_B: case OP_B:
case OP_BL: case OP_BL:
return disasm_branch(addr, opcode, insn, ptr); return DisassembleBranch(addr, opcode, insn);
case OP_BKPT: case OP_BKPT:
return disasm_bkpt(insn, ptr); return DisassembleBKPT(insn);
case OP_BLX: case OP_BLX:
// not supported yet // not supported yet
break; break;
case OP_BX: case OP_BX:
return disasm_bx(insn, ptr); return DisassembleBX(insn);
case OP_CDP: case OP_CDP:
sprintf(ptr, "cdp"); return "cdp";
return ptr;
case OP_CLZ: case OP_CLZ:
return disasm_clz(insn, ptr); return DisassembleCLZ(insn);
case OP_LDC: case OP_LDC:
sprintf(ptr, "ldc"); return "ldc";
return ptr;
case OP_LDM: case OP_LDM:
case OP_STM: case OP_STM:
return disasm_memblock(opcode, insn, ptr); return DisassembleMemblock(opcode, insn);
case OP_LDR: case OP_LDR:
case OP_LDRB: case OP_LDRB:
case OP_LDRBT: case OP_LDRBT:
@ -195,53 +187,52 @@ char *ARM_Disasm::disasm(uint32_t addr, uint32_t insn, char *result)
case OP_STRB: case OP_STRB:
case OP_STRBT: case OP_STRBT:
case OP_STRT: case OP_STRT:
return disasm_mem(insn, ptr); return DisassembleMem(insn);
case OP_LDRH: case OP_LDRH:
case OP_LDRSB: case OP_LDRSB:
case OP_LDRSH: case OP_LDRSH:
case OP_STRH: case OP_STRH:
return disasm_memhalf(insn, ptr); return DisassembleMemHalf(insn);
case OP_MCR: case OP_MCR:
case OP_MRC: case OP_MRC:
return disasm_mcr(opcode, insn, ptr); return DisassembleMCR(opcode, insn);
case OP_MLA: case OP_MLA:
return disasm_mla(opcode, insn, ptr); return DisassembleMLA(opcode, insn);
case OP_MRS: case OP_MRS:
return disasm_mrs(insn, ptr); return DisassembleMRS(insn);
case OP_MSR: case OP_MSR:
return disasm_msr(insn, ptr); return DisassembleMSR(insn);
case OP_MUL: case OP_MUL:
return disasm_mul(opcode, insn, ptr); return DisassembleMUL(opcode, insn);
case OP_PLD: case OP_PLD:
return disasm_pld(insn, ptr); return DisassemblePLD(insn);
case OP_STC: case OP_STC:
sprintf(ptr, "stc"); return "stc";
return ptr;
case OP_SWI: case OP_SWI:
return disasm_swi(insn, ptr); return DisassembleSWI(insn);
case OP_SWP: case OP_SWP:
case OP_SWPB: case OP_SWPB:
return disasm_swp(opcode, insn, ptr); return DisassembleSWP(opcode, insn);
case OP_UMLAL: case OP_UMLAL:
case OP_UMULL: case OP_UMULL:
case OP_SMLAL: case OP_SMLAL:
case OP_SMULL: case OP_SMULL:
return disasm_umlal(opcode, insn, ptr); return DisassembleUMLAL(opcode, insn);
default: default:
sprintf(ptr, "Error"); return "Error";
return ptr;
} }
return NULL; return NULL;
} }
char *ARM_Disasm::disasm_alu(Opcode opcode, uint32_t insn, char *ptr) std::string ARM_Disasm::DisassembleALU(Opcode opcode, uint32_t insn)
{ {
static const uint8_t kNoOperand1 = 1; static const uint8_t kNoOperand1 = 1;
static const uint8_t kNoDest = 2; static const uint8_t kNoDest = 2;
static const uint8_t kNoSbit = 4; static const uint8_t kNoSbit = 4;
char rn_str[20]; std::string rn_str;
char rd_str[20]; std::string rd_str;
uint8_t flags = 0; uint8_t flags = 0;
uint8_t cond = (insn >> 28) & 0xf; uint8_t cond = (insn >> 28) & 0xf;
uint8_t is_immed = (insn >> 25) & 0x1; uint8_t is_immed = (insn >> 25) & 0x1;
@ -269,14 +260,14 @@ char *ARM_Disasm::disasm_alu(Opcode opcode, uint32_t insn, char *ptr)
// The "mov" instruction ignores the first operand (rn). // The "mov" instruction ignores the first operand (rn).
rn_str[0] = 0; rn_str[0] = 0;
if ((flags & kNoOperand1) == 0) { if ((flags & kNoOperand1) == 0) {
sprintf(rn_str, "r%d, ", rn); rn_str = StringFromFormat("r%d, ", rn);
} }
// The following instructions do not write the result register (rd): // The following instructions do not write the result register (rd):
// tst, teq, cmp, cmn. // tst, teq, cmp, cmn.
rd_str[0] = 0; rd_str[0] = 0;
if ((flags & kNoDest) == 0) { if ((flags & kNoDest) == 0) {
sprintf(rd_str, "r%d, ", rd); rd_str = StringFromFormat("r%d, ", rd);
} }
const char *sbit_str = ""; const char *sbit_str = "";
@ -284,9 +275,8 @@ char *ARM_Disasm::disasm_alu(Opcode opcode, uint32_t insn, char *ptr)
sbit_str = "s"; sbit_str = "s";
if (is_immed) { if (is_immed) {
sprintf(ptr, "%s%s%s\t%s%s#%u ; 0x%x", return StringFromFormat("%s%s%s\t%s%s#%u ; 0x%x",
opname, cond_to_str(cond), sbit_str, rd_str, rn_str, immed, immed); opname, cond_to_str(cond), sbit_str, rd_str.c_str(), rn_str.c_str(), immed, immed);
return ptr;
} }
uint8_t shift_is_reg = (insn >> 4) & 1; uint8_t shift_is_reg = (insn >> 4) & 1;
@ -300,33 +290,29 @@ char *ARM_Disasm::disasm_alu(Opcode opcode, uint32_t insn, char *ptr)
rotated_val = (rotated_val >> rotate2) | (rotated_val << (32 - rotate2)); rotated_val = (rotated_val >> rotate2) | (rotated_val << (32 - rotate2));
if (!shift_is_reg && shift_type == 0 && shift_amount == 0) { if (!shift_is_reg && shift_type == 0 && shift_amount == 0) {
sprintf(ptr, "%s%s%s\t%s%sr%d", return StringFromFormat("%s%s%s\t%s%sr%d",
opname, cond_to_str(cond), sbit_str, rd_str, rn_str, rm); opname, cond_to_str(cond), sbit_str, rd_str.c_str(), rn_str.c_str(), rm);
return ptr;
} }
const char *shift_name = shift_names[shift_type]; const char *shift_name = shift_names[shift_type];
if (shift_is_reg) { if (shift_is_reg) {
sprintf(ptr, "%s%s%s\t%s%sr%d, %s r%d", return StringFromFormat("%s%s%s\t%s%sr%d, %s r%d",
opname, cond_to_str(cond), sbit_str, rd_str, rn_str, rm, opname, cond_to_str(cond), sbit_str, rd_str.c_str(), rn_str.c_str(), rm,
shift_name, rs); shift_name, rs);
return ptr;
} }
if (shift_amount == 0) { if (shift_amount == 0) {
if (shift_type == 3) { if (shift_type == 3) {
sprintf(ptr, "%s%s%s\t%s%sr%d, RRX", return StringFromFormat("%s%s%s\t%s%sr%d, RRX",
opname, cond_to_str(cond), sbit_str, rd_str, rn_str, rm); opname, cond_to_str(cond), sbit_str, rd_str.c_str(), rn_str.c_str(), rm);
return ptr;
} }
shift_amount = 32; shift_amount = 32;
} }
sprintf(ptr, "%s%s%s\t%s%sr%d, %s #%u", return StringFromFormat("%s%s%s\t%s%sr%d, %s #%u",
opname, cond_to_str(cond), sbit_str, rd_str, rn_str, rm, opname, cond_to_str(cond), sbit_str, rd_str.c_str(), rn_str.c_str(), rm,
shift_name, shift_amount); shift_name, shift_amount);
return ptr;
} }
char *ARM_Disasm::disasm_branch(uint32_t addr, Opcode opcode, uint32_t insn, char *ptr) std::string ARM_Disasm::DisassembleBranch(uint32_t addr, Opcode opcode, uint32_t insn)
{ {
uint8_t cond = (insn >> 28) & 0xf; uint8_t cond = (insn >> 28) & 0xf;
uint32_t offset = insn & 0xffffff; uint32_t offset = insn & 0xffffff;
@ -339,37 +325,34 @@ char *ARM_Disasm::disasm_branch(uint32_t addr, Opcode opcode, uint32_t insn, cha
offset += 8; offset += 8;
addr += offset; addr += offset;
const char *opname = opcode_names[opcode]; const char *opname = opcode_names[opcode];
sprintf(ptr, "%s%s\t0x%x", opname, cond_to_str(cond), addr); return StringFromFormat("%s%s\t0x%x", opname, cond_to_str(cond), addr);
return ptr;
} }
char *ARM_Disasm::disasm_bx(uint32_t insn, char *ptr) std::string ARM_Disasm::DisassembleBX(uint32_t insn)
{ {
uint8_t cond = (insn >> 28) & 0xf; uint8_t cond = (insn >> 28) & 0xf;
uint8_t rn = insn & 0xf; uint8_t rn = insn & 0xf;
sprintf(ptr, "bx%s\tr%d", cond_to_str(cond), rn); return StringFromFormat("bx%s\tr%d", cond_to_str(cond), rn);
return ptr;
} }
char *ARM_Disasm::disasm_bkpt(uint32_t insn, char *ptr) std::string ARM_Disasm::DisassembleBKPT(uint32_t insn)
{ {
uint32_t immed = (((insn >> 8) & 0xfff) << 4) | (insn & 0xf); uint32_t immed = (((insn >> 8) & 0xfff) << 4) | (insn & 0xf);
sprintf(ptr, "bkpt\t#%d", immed); return StringFromFormat("bkpt\t#%d", immed);
return ptr;
} }
char *ARM_Disasm::disasm_clz(uint32_t insn, char *ptr) std::string ARM_Disasm::DisassembleCLZ(uint32_t insn)
{ {
uint8_t cond = (insn >> 28) & 0xf; uint8_t cond = (insn >> 28) & 0xf;
uint8_t rd = (insn >> 12) & 0xf; uint8_t rd = (insn >> 12) & 0xf;
uint8_t rm = insn & 0xf; uint8_t rm = insn & 0xf;
sprintf(ptr, "clz%s\tr%d, r%d", cond_to_str(cond), rd, rm); return StringFromFormat("clz%s\tr%d, r%d", cond_to_str(cond), rd, rm);
return ptr;
} }
char *ARM_Disasm::disasm_memblock(Opcode opcode, uint32_t insn, char *ptr) std::string ARM_Disasm::DisassembleMemblock(Opcode opcode, uint32_t insn)
{ {
char tmp_reg[10], tmp_list[80]; std::string tmp_reg;
std::string tmp_list;
uint8_t cond = (insn >> 28) & 0xf; uint8_t cond = (insn >> 28) & 0xf;
uint8_t write_back = (insn >> 21) & 0x1; uint8_t write_back = (insn >> 21) & 0x1;
@ -393,8 +376,7 @@ char *ARM_Disasm::disasm_memblock(Opcode opcode, uint32_t insn, char *ptr)
tmp_list[0] = 0; tmp_list[0] = 0;
for (int ii = 0; ii < 16; ++ii) { for (int ii = 0; ii < 16; ++ii) {
if (reg_list & (1 << ii)) { if (reg_list & (1 << ii)) {
sprintf(tmp_reg, "%sr%d", comma, ii); tmp_list += StringFromFormat("%sr%d", comma, ii);
strcat(tmp_list, tmp_reg);
comma = ","; comma = ",";
} }
} }
@ -414,12 +396,11 @@ char *ARM_Disasm::disasm_memblock(Opcode opcode, uint32_t insn, char *ptr)
} }
} }
sprintf(ptr, "%s%s%s\tr%d%s, {%s}%s", return StringFromFormat("%s%s%s\tr%d%s, {%s}%s",
opname, cond_to_str(cond), addr_mode, rn, bang, tmp_list, carret); opname, cond_to_str(cond), addr_mode, rn, bang, tmp_list.c_str(), carret);
return ptr;
} }
char *ARM_Disasm::disasm_mem(uint32_t insn, char *ptr) std::string ARM_Disasm::DisassembleMem(uint32_t insn)
{ {
uint8_t cond = (insn >> 28) & 0xf; uint8_t cond = (insn >> 28) & 0xf;
uint8_t is_reg = (insn >> 25) & 0x1; uint8_t is_reg = (insn >> 25) & 0x1;
@ -451,20 +432,20 @@ char *ARM_Disasm::disasm_mem(uint32_t insn, char *ptr)
if (is_reg == 0) { if (is_reg == 0) {
if (is_pre) { if (is_pre) {
if (offset == 0) { if (offset == 0) {
sprintf(ptr, "%s%s%s\tr%d, [r%d]", return StringFromFormat("%s%s%s\tr%d, [r%d]",
opname, cond_to_str(cond), byte, rd, rn); opname, cond_to_str(cond), byte, rd, rn);
} else { } else {
sprintf(ptr, "%s%s%s\tr%d, [r%d, #%s%u]%s", return StringFromFormat("%s%s%s\tr%d, [r%d, #%s%u]%s",
opname, cond_to_str(cond), byte, rd, rn, minus, offset, bang); opname, cond_to_str(cond), byte, rd, rn, minus, offset, bang);
} }
} else { } else {
const char *transfer = ""; const char *transfer = "";
if (write_back) if (write_back)
transfer = "t"; transfer = "t";
sprintf(ptr, "%s%s%s%s\tr%d, [r%d], #%s%u",
return StringFromFormat("%s%s%s%s\tr%d, [r%d], #%s%u",
opname, cond_to_str(cond), byte, transfer, rd, rn, minus, offset); opname, cond_to_str(cond), byte, transfer, rd, rn, minus, offset);
} }
return ptr;
} }
uint8_t rm = insn & 0xf; uint8_t rm = insn & 0xf;
@ -476,21 +457,18 @@ char *ARM_Disasm::disasm_mem(uint32_t insn, char *ptr)
if (is_pre) { if (is_pre) {
if (shift_amount == 0) { if (shift_amount == 0) {
if (shift_type == 0) { if (shift_type == 0) {
sprintf(ptr, "%s%s%s\tr%d, [r%d, %sr%d]%s", return StringFromFormat("%s%s%s\tr%d, [r%d, %sr%d]%s",
opname, cond_to_str(cond), byte, rd, rn, minus, rm, bang); opname, cond_to_str(cond), byte, rd, rn, minus, rm, bang);
return ptr;
} }
if (shift_type == 3) { if (shift_type == 3) {
sprintf(ptr, "%s%s%s\tr%d, [r%d, %sr%d, RRX]%s", return StringFromFormat("%s%s%s\tr%d, [r%d, %sr%d, RRX]%s",
opname, cond_to_str(cond), byte, rd, rn, minus, rm, bang); opname, cond_to_str(cond), byte, rd, rn, minus, rm, bang);
return ptr;
} }
shift_amount = 32; shift_amount = 32;
} }
sprintf(ptr, "%s%s%s\tr%d, [r%d, %sr%d, %s #%u]%s", return StringFromFormat("%s%s%s\tr%d, [r%d, %sr%d, %s #%u]%s",
opname, cond_to_str(cond), byte, rd, rn, minus, rm, opname, cond_to_str(cond), byte, rd, rn, minus, rm,
shift_name, shift_amount, bang); shift_name, shift_amount, bang);
return ptr;
} }
const char *transfer = ""; const char *transfer = "";
@ -499,25 +477,22 @@ char *ARM_Disasm::disasm_mem(uint32_t insn, char *ptr)
if (shift_amount == 0) { if (shift_amount == 0) {
if (shift_type == 0) { if (shift_type == 0) {
sprintf(ptr, "%s%s%s%s\tr%d, [r%d], %sr%d", return StringFromFormat("%s%s%s%s\tr%d, [r%d], %sr%d",
opname, cond_to_str(cond), byte, transfer, rd, rn, minus, rm); opname, cond_to_str(cond), byte, transfer, rd, rn, minus, rm);
return ptr;
} }
if (shift_type == 3) { if (shift_type == 3) {
sprintf(ptr, "%s%s%s%s\tr%d, [r%d], %sr%d, RRX", return StringFromFormat("%s%s%s%s\tr%d, [r%d], %sr%d, RRX",
opname, cond_to_str(cond), byte, transfer, rd, rn, minus, rm); opname, cond_to_str(cond), byte, transfer, rd, rn, minus, rm);
return ptr;
} }
shift_amount = 32; shift_amount = 32;
} }
sprintf(ptr, "%s%s%s%s\tr%d, [r%d], %sr%d, %s #%u", return StringFromFormat("%s%s%s%s\tr%d, [r%d], %sr%d, %s #%u",
opname, cond_to_str(cond), byte, transfer, rd, rn, minus, rm, opname, cond_to_str(cond), byte, transfer, rd, rn, minus, rm,
shift_name, shift_amount); shift_name, shift_amount);
return ptr;
} }
char *ARM_Disasm::disasm_memhalf(uint32_t insn, char *ptr) std::string ARM_Disasm::DisassembleMemHalf(uint32_t insn)
{ {
uint8_t cond = (insn >> 28) & 0xf; uint8_t cond = (insn >> 28) & 0xf;
uint8_t is_load = (insn >> 20) & 0x1; uint8_t is_load = (insn >> 20) & 0x1;
@ -553,29 +528,27 @@ char *ARM_Disasm::disasm_memhalf(uint32_t insn, char *ptr)
if (is_immed) { if (is_immed) {
if (is_pre) { if (is_pre) {
if (offset == 0) { if (offset == 0) {
sprintf(ptr, "%s%sh\tr%d, [r%d]", opname, cond_to_str(cond), rd, rn); return StringFromFormat("%s%sh\tr%d, [r%d]", opname, cond_to_str(cond), rd, rn);
} else { } else {
sprintf(ptr, "%s%sh\tr%d, [r%d, #%s%u]%s", return StringFromFormat("%s%sh\tr%d, [r%d, #%s%u]%s",
opname, cond_to_str(cond), rd, rn, minus, offset, bang); opname, cond_to_str(cond), rd, rn, minus, offset, bang);
} }
} else { } else {
sprintf(ptr, "%s%sh\tr%d, [r%d], #%s%u", return StringFromFormat("%s%sh\tr%d, [r%d], #%s%u",
opname, cond_to_str(cond), rd, rn, minus, offset); opname, cond_to_str(cond), rd, rn, minus, offset);
} }
return ptr;
} }
if (is_pre) { if (is_pre) {
sprintf(ptr, "%s%sh\tr%d, [r%d, %sr%d]%s", return StringFromFormat("%s%sh\tr%d, [r%d, %sr%d]%s",
opname, cond_to_str(cond), rd, rn, minus, rm, bang); opname, cond_to_str(cond), rd, rn, minus, rm, bang);
} else { } else {
sprintf(ptr, "%s%sh\tr%d, [r%d], %sr%d", return StringFromFormat("%s%sh\tr%d, [r%d], %sr%d",
opname, cond_to_str(cond), rd, rn, minus, rm); opname, cond_to_str(cond), rd, rn, minus, rm);
} }
return ptr;
} }
char *ARM_Disasm::disasm_mcr(Opcode opcode, uint32_t insn, char *ptr) std::string ARM_Disasm::DisassembleMCR(Opcode opcode, uint32_t insn)
{ {
uint8_t cond = (insn >> 28) & 0xf; uint8_t cond = (insn >> 28) & 0xf;
uint8_t crn = (insn >> 16) & 0xf; uint8_t crn = (insn >> 16) & 0xf;
@ -585,12 +558,11 @@ char *ARM_Disasm::disasm_mcr(Opcode opcode, uint32_t insn, char *ptr)
uint8_t crm = insn & 0xf; uint8_t crm = insn & 0xf;
const char *opname = opcode_names[opcode]; const char *opname = opcode_names[opcode];
sprintf(ptr, "%s%s\t%d, 0, r%d, cr%d, cr%d, {%d}", return StringFromFormat("%s%s\t%d, 0, r%d, cr%d, cr%d, {%d}",
opname, cond_to_str(cond), cpnum, crd, crn, crm, opcode2); opname, cond_to_str(cond), cpnum, crd, crn, crm, opcode2);
return ptr;
} }
char *ARM_Disasm::disasm_mla(Opcode opcode, uint32_t insn, char *ptr) std::string ARM_Disasm::DisassembleMLA(Opcode opcode, uint32_t insn)
{ {
uint8_t cond = (insn >> 28) & 0xf; uint8_t cond = (insn >> 28) & 0xf;
uint8_t rd = (insn >> 16) & 0xf; uint8_t rd = (insn >> 16) & 0xf;
@ -600,12 +572,11 @@ char *ARM_Disasm::disasm_mla(Opcode opcode, uint32_t insn, char *ptr)
uint8_t bit_s = (insn >> 20) & 1; uint8_t bit_s = (insn >> 20) & 1;
const char *opname = opcode_names[opcode]; const char *opname = opcode_names[opcode];
sprintf(ptr, "%s%s%s\tr%d, r%d, r%d, r%d", return StringFromFormat("%s%s%s\tr%d, r%d, r%d, r%d",
opname, cond_to_str(cond), bit_s ? "s" : "", rd, rm, rs, rn); opname, cond_to_str(cond), bit_s ? "s" : "", rd, rm, rs, rn);
return ptr;
} }
char *ARM_Disasm::disasm_umlal(Opcode opcode, uint32_t insn, char *ptr) std::string ARM_Disasm::DisassembleUMLAL(Opcode opcode, uint32_t insn)
{ {
uint8_t cond = (insn >> 28) & 0xf; uint8_t cond = (insn >> 28) & 0xf;
uint8_t rdhi = (insn >> 16) & 0xf; uint8_t rdhi = (insn >> 16) & 0xf;
@ -615,12 +586,11 @@ char *ARM_Disasm::disasm_umlal(Opcode opcode, uint32_t insn, char *ptr)
uint8_t bit_s = (insn >> 20) & 1; uint8_t bit_s = (insn >> 20) & 1;
const char *opname = opcode_names[opcode]; const char *opname = opcode_names[opcode];
sprintf(ptr, "%s%s%s\tr%d, r%d, r%d, r%d", return StringFromFormat("%s%s%s\tr%d, r%d, r%d, r%d",
opname, cond_to_str(cond), bit_s ? "s" : "", rdlo, rdhi, rm, rs); opname, cond_to_str(cond), bit_s ? "s" : "", rdlo, rdhi, rm, rs);
return ptr;
} }
char *ARM_Disasm::disasm_mul(Opcode opcode, uint32_t insn, char *ptr) std::string ARM_Disasm::DisassembleMUL(Opcode opcode, uint32_t insn)
{ {
uint8_t cond = (insn >> 28) & 0xf; uint8_t cond = (insn >> 28) & 0xf;
uint8_t rd = (insn >> 16) & 0xf; uint8_t rd = (insn >> 16) & 0xf;
@ -629,22 +599,20 @@ char *ARM_Disasm::disasm_mul(Opcode opcode, uint32_t insn, char *ptr)
uint8_t bit_s = (insn >> 20) & 1; uint8_t bit_s = (insn >> 20) & 1;
const char *opname = opcode_names[opcode]; const char *opname = opcode_names[opcode];
sprintf(ptr, "%s%s%s\tr%d, r%d, r%d", return StringFromFormat("%s%s%s\tr%d, r%d, r%d",
opname, cond_to_str(cond), bit_s ? "s" : "", rd, rm, rs); opname, cond_to_str(cond), bit_s ? "s" : "", rd, rm, rs);
return ptr;
} }
char *ARM_Disasm::disasm_mrs(uint32_t insn, char *ptr) std::string ARM_Disasm::DisassembleMRS(uint32_t insn)
{ {
uint8_t cond = (insn >> 28) & 0xf; uint8_t cond = (insn >> 28) & 0xf;
uint8_t rd = (insn >> 12) & 0xf; uint8_t rd = (insn >> 12) & 0xf;
uint8_t ps = (insn >> 22) & 1; uint8_t ps = (insn >> 22) & 1;
sprintf(ptr, "mrs%s\tr%d, %s", cond_to_str(cond), rd, ps ? "spsr" : "cpsr"); return StringFromFormat("mrs%s\tr%d, %s", cond_to_str(cond), rd, ps ? "spsr" : "cpsr");
return ptr;
} }
char *ARM_Disasm::disasm_msr(uint32_t insn, char *ptr) std::string ARM_Disasm::DisassembleMSR(uint32_t insn)
{ {
char flags[8]; char flags[8];
int flag_index = 0; int flag_index = 0;
@ -668,19 +636,17 @@ char *ARM_Disasm::disasm_msr(uint32_t insn, char *ptr)
uint8_t rotate = (insn >> 8) & 0xf; uint8_t rotate = (insn >> 8) & 0xf;
uint8_t rotate2 = rotate << 1; uint8_t rotate2 = rotate << 1;
uint32_t rotated_val = (immed >> rotate2) | (immed << (32 - rotate2)); uint32_t rotated_val = (immed >> rotate2) | (immed << (32 - rotate2));
sprintf(ptr, "msr%s\t%s_%s, #0x%x", return StringFromFormat("msr%s\t%s_%s, #0x%x",
cond_to_str(cond), pd ? "spsr" : "cpsr", flags, rotated_val); cond_to_str(cond), pd ? "spsr" : "cpsr", flags, rotated_val);
return ptr;
} }
uint8_t rm = insn & 0xf; uint8_t rm = insn & 0xf;
sprintf(ptr, "msr%s\t%s_%s, r%d", return StringFromFormat("msr%s\t%s_%s, r%d",
cond_to_str(cond), pd ? "spsr" : "cpsr", flags, rm); cond_to_str(cond), pd ? "spsr" : "cpsr", flags, rm);
return ptr;
} }
char *ARM_Disasm::disasm_pld(uint32_t insn, char *ptr) std::string ARM_Disasm::DisassemblePLD(uint32_t insn)
{ {
uint8_t is_reg = (insn >> 25) & 0x1; uint8_t is_reg = (insn >> 25) & 0x1;
uint8_t is_up = (insn >> 23) & 0x1; uint8_t is_up = (insn >> 23) & 0x1;
@ -692,29 +658,26 @@ char *ARM_Disasm::disasm_pld(uint32_t insn, char *ptr)
if (is_reg) { if (is_reg) {
uint8_t rm = insn & 0xf; uint8_t rm = insn & 0xf;
sprintf(ptr, "pld\t[r%d, %sr%d]", rn, minus, rm); return StringFromFormat("pld\t[r%d, %sr%d]", rn, minus, rm);
return ptr;
} }
uint16_t offset = insn & 0xfff; uint16_t offset = insn & 0xfff;
if (offset == 0) { if (offset == 0) {
sprintf(ptr, "pld\t[r%d]", rn); return StringFromFormat("pld\t[r%d]", rn);
} else { } else {
sprintf(ptr, "pld\t[r%d, #%s%u]", rn, minus, offset); return StringFromFormat("pld\t[r%d, #%s%u]", rn, minus, offset);
} }
return ptr;
} }
char *ARM_Disasm::disasm_swi(uint32_t insn, char *ptr) std::string ARM_Disasm::DisassembleSWI(uint32_t insn)
{ {
uint8_t cond = (insn >> 28) & 0xf; uint8_t cond = (insn >> 28) & 0xf;
uint32_t sysnum = insn & 0x00ffffff; uint32_t sysnum = insn & 0x00ffffff;
sprintf(ptr, "swi%s 0x%x", cond_to_str(cond), sysnum); return StringFromFormat("swi%s 0x%x", cond_to_str(cond), sysnum);
return ptr;
} }
char *ARM_Disasm::disasm_swp(Opcode opcode, uint32_t insn, char *ptr) std::string ARM_Disasm::DisassembleSWP(Opcode opcode, uint32_t insn)
{ {
uint8_t cond = (insn >> 28) & 0xf; uint8_t cond = (insn >> 28) & 0xf;
uint8_t rn = (insn >> 16) & 0xf; uint8_t rn = (insn >> 16) & 0xf;
@ -722,26 +685,25 @@ char *ARM_Disasm::disasm_swp(Opcode opcode, uint32_t insn, char *ptr)
uint8_t rm = insn & 0xf; uint8_t rm = insn & 0xf;
const char *opname = opcode_names[opcode]; const char *opname = opcode_names[opcode];
sprintf(ptr, "%s%s\tr%d, r%d, [r%d]", opname, cond_to_str(cond), rd, rm, rn); return StringFromFormat("%s%s\tr%d, r%d, [r%d]", opname, cond_to_str(cond), rd, rm, rn);
return ptr;
} }
Opcode ARM_Disasm::decode(uint32_t insn) { Opcode ARM_Disasm::Decode(uint32_t insn) {
uint32_t bits27_26 = (insn >> 26) & 0x3; uint32_t bits27_26 = (insn >> 26) & 0x3;
switch (bits27_26) { switch (bits27_26) {
case 0x0: case 0x0:
return decode00(insn); return Decode00(insn);
case 0x1: case 0x1:
return decode01(insn); return Decode01(insn);
case 0x2: case 0x2:
return decode10(insn); return Decode10(insn);
case 0x3: case 0x3:
return decode11(insn); return Decode11(insn);
} }
return OP_INVALID; return OP_INVALID;
} }
Opcode ARM_Disasm::decode00(uint32_t insn) { Opcode ARM_Disasm::Decode00(uint32_t insn) {
uint8_t bit25 = (insn >> 25) & 0x1; uint8_t bit25 = (insn >> 25) & 0x1;
uint8_t bit4 = (insn >> 4) & 0x1; uint8_t bit4 = (insn >> 4) & 0x1;
if (bit25 == 0 && bit4 == 1) { if (bit25 == 0 && bit4 == 1) {
@ -767,21 +729,21 @@ Opcode ARM_Disasm::decode00(uint32_t insn) {
return OP_SWP; return OP_SWP;
} }
// One of the multiply instructions // One of the multiply instructions
return decode_mul(insn); return DecodeMUL(insn);
} }
uint8_t bit7 = (insn >> 7) & 0x1; uint8_t bit7 = (insn >> 7) & 0x1;
if (bit7 == 1) { if (bit7 == 1) {
// One of the load/store halfword/byte instructions // One of the load/store halfword/byte instructions
return decode_ldrh(insn); return DecodeLDRH(insn);
} }
} }
// One of the data processing instructions // One of the data processing instructions
return decode_alu(insn); return DecodeALU(insn);
} }
Opcode ARM_Disasm::decode01(uint32_t insn) { Opcode ARM_Disasm::Decode01(uint32_t insn) {
uint8_t is_reg = (insn >> 25) & 0x1; uint8_t is_reg = (insn >> 25) & 0x1;
uint8_t bit4 = (insn >> 4) & 0x1; uint8_t bit4 = (insn >> 4) & 0x1;
if (is_reg == 1 && bit4 == 1) if (is_reg == 1 && bit4 == 1)
@ -808,7 +770,7 @@ Opcode ARM_Disasm::decode01(uint32_t insn) {
return OP_STR; return OP_STR;
} }
Opcode ARM_Disasm::decode10(uint32_t insn) { Opcode ARM_Disasm::Decode10(uint32_t insn) {
uint8_t bit25 = (insn >> 25) & 0x1; uint8_t bit25 = (insn >> 25) & 0x1;
if (bit25 == 0) { if (bit25 == 0) {
// LDM/STM // LDM/STM
@ -833,7 +795,7 @@ Opcode ARM_Disasm::decode10(uint32_t insn) {
return OP_BL; return OP_BL;
} }
Opcode ARM_Disasm::decode11(uint32_t insn) { Opcode ARM_Disasm::Decode11(uint32_t insn) {
uint8_t bit25 = (insn >> 25) & 0x1; uint8_t bit25 = (insn >> 25) & 0x1;
if (bit25 == 0) { if (bit25 == 0) {
// LDC, SDC // LDC, SDC
@ -882,7 +844,7 @@ Opcode ARM_Disasm::decode11(uint32_t insn) {
return OP_MCR; return OP_MCR;
} }
Opcode ARM_Disasm::decode_mul(uint32_t insn) { Opcode ARM_Disasm::DecodeMUL(uint32_t insn) {
uint8_t bit24 = (insn >> 24) & 0x1; uint8_t bit24 = (insn >> 24) & 0x1;
if (bit24 != 0) { if (bit24 != 0) {
// This is an unexpected bit pattern. Create an undefined // This is an unexpected bit pattern. Create an undefined
@ -916,7 +878,7 @@ Opcode ARM_Disasm::decode_mul(uint32_t insn) {
return OP_SMLAL; return OP_SMLAL;
} }
Opcode ARM_Disasm::decode_ldrh(uint32_t insn) { Opcode ARM_Disasm::DecodeLDRH(uint32_t insn) {
uint8_t is_load = (insn >> 20) & 0x1; uint8_t is_load = (insn >> 20) & 0x1;
uint8_t bits_65 = (insn >> 5) & 0x3; uint8_t bits_65 = (insn >> 5) & 0x3;
if (is_load) { if (is_load) {
@ -946,7 +908,7 @@ Opcode ARM_Disasm::decode_ldrh(uint32_t insn) {
return OP_STRH; return OP_STRH;
} }
Opcode ARM_Disasm::decode_alu(uint32_t insn) { Opcode ARM_Disasm::DecodeALU(uint32_t insn) {
uint8_t is_immed = (insn >> 25) & 0x1; uint8_t is_immed = (insn >> 25) & 0x1;
uint8_t opcode = (insn >> 21) & 0xf; uint8_t opcode = (insn >> 21) & 0xf;
uint8_t bit_s = (insn >> 20) & 1; uint8_t bit_s = (insn >> 20) & 1;

63
src/core/arm/disassembler/arm_disasm.h
View File

@ -1,9 +1,9 @@
// Copyright 2006 The Android Open Source Project // Copyright 2006 The Android Open Source Project
#ifndef ARMDIS_H #pragma once
#define ARMDIS_H
#include <stdint.h> #include <cstdint>
#include <string>
// Note: this list of opcodes must match the list used to initialize // Note: this list of opcodes must match the list used to initialize
// the opflags[] array in opcode.cpp. // the opflags[] array in opcode.cpp.
@ -109,38 +109,33 @@ enum Opcode {
class ARM_Disasm { class ARM_Disasm {
public: public:
static char *disasm(uint32_t addr, uint32_t insn, char *buffer); static std::string Disassemble(uint32_t addr, uint32_t insn);
static Opcode decode(uint32_t insn); static Opcode Decode(uint32_t insn);
private: private:
static Opcode decode00(uint32_t insn); static Opcode Decode00(uint32_t insn);
static Opcode decode01(uint32_t insn); static Opcode Decode01(uint32_t insn);
static Opcode decode10(uint32_t insn); static Opcode Decode10(uint32_t insn);
static Opcode decode11(uint32_t insn); static Opcode Decode11(uint32_t insn);
static Opcode decode_mul(uint32_t insn); static Opcode DecodeMUL(uint32_t insn);
static Opcode decode_ldrh(uint32_t insn); static Opcode DecodeLDRH(uint32_t insn);
static Opcode decode_alu(uint32_t insn); static Opcode DecodeALU(uint32_t insn);
static char *disasm_alu(Opcode opcode, uint32_t insn, char *ptr); static std::string DisassembleALU(Opcode opcode, uint32_t insn);
static char *disasm_branch(uint32_t addr, Opcode opcode, uint32_t insn, char *ptr); static std::string DisassembleBranch(uint32_t addr, Opcode opcode, uint32_t insn);
static char *disasm_bx(uint32_t insn, char *ptr); static std::string DisassembleBX(uint32_t insn);
static char *disasm_bkpt(uint32_t insn, char *ptr); static std::string DisassembleBKPT(uint32_t insn);
static char *disasm_clz(uint32_t insn, char *ptr); static std::string DisassembleCLZ(uint32_t insn);
static char *disasm_memblock(Opcode opcode, uint32_t insn, char *ptr); static std::string DisassembleMemblock(Opcode opcode, uint32_t insn);
static char *disasm_mem(uint32_t insn, char *ptr); static std::string DisassembleMem(uint32_t insn);
static char *disasm_memhalf(uint32_t insn, char *ptr); static std::string DisassembleMemHalf(uint32_t insn);
static char *disasm_mcr(Opcode opcode, uint32_t insn, char *ptr); static std::string DisassembleMCR(Opcode opcode, uint32_t insn);
static char *disasm_mla(Opcode opcode, uint32_t insn, char *ptr); static std::string DisassembleMLA(Opcode opcode, uint32_t insn);
static char *disasm_umlal(Opcode opcode, uint32_t insn, char *ptr); static std::string DisassembleUMLAL(Opcode opcode, uint32_t insn);
static char *disasm_mul(Opcode opcode, uint32_t insn, char *ptr); static std::string DisassembleMUL(Opcode opcode, uint32_t insn);
static char *disasm_mrs(uint32_t insn, char *ptr); static std::string DisassembleMRS(uint32_t insn);
static char *disasm_msr(uint32_t insn, char *ptr); static std::string DisassembleMSR(uint32_t insn);
static char *disasm_pld(uint32_t insn, char *ptr); static std::string DisassemblePLD(uint32_t insn);
static char *disasm_swi(uint32_t insn, char *ptr); static std::string DisassembleSWI(uint32_t insn);
static char *disasm_swp(Opcode opcode, uint32_t insn, char *ptr); static std::string DisassembleSWP(Opcode opcode, uint32_t insn);
}; };
extern char *disasm_insn_thumb(uint32_t pc, uint32_t insn1, uint32_t insn2, char *result);
extern Opcode decode_insn_thumb(uint32_t given);
#endif /* ARMDIS_H */

9
src/core/arm/interpreter/armsupp.cpp
View File

@ -17,6 +17,7 @@
//#include <util.h> //#include <util.h>
#include <string>
#include "core/arm/interpreter/armdefs.h" #include "core/arm/interpreter/armdefs.h"
#include "core/arm/interpreter/armemu.h" #include "core/arm/interpreter/armemu.h"
#include "core/hle/coprocessor.h" #include "core/hle/coprocessor.h"
@ -870,12 +871,8 @@ ARMul_CDP (ARMul_State * state, ARMword instr)
void void
ARMul_UndefInstr (ARMul_State * state, ARMword instr) ARMul_UndefInstr (ARMul_State * state, ARMword instr)
{ {
/*SKYEYE_LOG_IN_CLR(RED, "In %s, line = %d, undef instr: 0x%x\n", std::string disasm = ARM_Disasm::Disassemble(state->pc, instr);
__func__, __LINE__, instr);*/ ERROR_LOG(ARM11, "Undefined instruction!! Disasm: %s Opcode: 0x%x", disasm.c_str(), instr);
char buff[512];
ARM_Disasm disasm = ARM_Disasm();
disasm.disasm(state->pc, instr, buff);
ERROR_LOG(ARM11, "Undefined instruction!! Disasm: %s Opcode: 0x%x", buff, instr);
ARMul_Abort (state, ARMul_UndefinedInstrV); ARMul_Abort (state, ARMul_UndefinedInstrV);
} }