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@ -3,7 +3,9 @@
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#include <string>
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#include <unordered_set>
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#include "common/common_types.h"
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#include "common/string_util.h"
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#include "core/arm/disassembler/arm_disasm.h"
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#include "core/arm/skyeye_common/armsupp.h"
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@ -215,11 +217,11 @@ static const char *shift_names[] = {
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"ROR"
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};
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static const char* cond_to_str(uint32_t cond) {
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static const char* cond_to_str(u32 cond) {
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return cond_names[cond];
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}
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std::string ARM_Disasm::Disassemble(uint32_t addr, uint32_t insn)
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std::string ARM_Disasm::Disassemble(u32 addr, u32 insn)
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{
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Opcode opcode = Decode(insn);
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switch (opcode) {
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@ -400,22 +402,22 @@ std::string ARM_Disasm::Disassemble(uint32_t addr, uint32_t insn)
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return NULL;
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}
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std::string ARM_Disasm::DisassembleALU(Opcode opcode, uint32_t insn)
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std::string ARM_Disasm::DisassembleALU(Opcode opcode, u32 insn)
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{
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static const uint8_t kNoOperand1 = 1;
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static const uint8_t kNoDest = 2;
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static const uint8_t kNoSbit = 4;
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static const u8 kNoOperand1 = 1;
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static const u8 kNoDest = 2;
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static const u8 kNoSbit = 4;
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std::string rn_str;
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std::string rd_str;
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uint8_t flags = 0;
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uint8_t cond = (insn >> 28) & 0xf;
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uint8_t is_immed = (insn >> 25) & 0x1;
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uint8_t bit_s = (insn >> 20) & 1;
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uint8_t rn = (insn >> 16) & 0xf;
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uint8_t rd = (insn >> 12) & 0xf;
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uint8_t immed = insn & 0xff;
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u8 flags = 0;
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u8 cond = (insn >> 28) & 0xf;
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u8 is_immed = (insn >> 25) & 0x1;
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u8 bit_s = (insn >> 20) & 1;
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u8 rn = (insn >> 16) & 0xf;
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u8 rd = (insn >> 12) & 0xf;
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u8 immed = insn & 0xff;
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const char* opname = opcode_names[opcode];
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switch (opcode) {
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@ -455,14 +457,14 @@ std::string ARM_Disasm::DisassembleALU(Opcode opcode, uint32_t insn)
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opname, cond_to_str(cond), sbit_str, rd_str.c_str(), rn_str.c_str(), immed, immed);
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}
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uint8_t shift_is_reg = (insn >> 4) & 1;
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uint8_t rotate = (insn >> 8) & 0xf;
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uint8_t rm = insn & 0xf;
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uint8_t shift_type = (insn >> 5) & 0x3;
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uint8_t rs = (insn >> 8) & 0xf;
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uint8_t shift_amount = (insn >> 7) & 0x1f;
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uint32_t rotated_val = immed;
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uint8_t rotate2 = rotate << 1;
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u8 shift_is_reg = (insn >> 4) & 1;
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u8 rotate = (insn >> 8) & 0xf;
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u8 rm = insn & 0xf;
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u8 shift_type = (insn >> 5) & 0x3;
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u8 rs = (insn >> 8) & 0xf;
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u8 shift_amount = (insn >> 7) & 0x1f;
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u32 rotated_val = immed;
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u8 rotate2 = rotate << 1;
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rotated_val = (rotated_val >> rotate2) | (rotated_val << (32 - rotate2));
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if (!shift_is_reg && shift_type == 0 && shift_amount == 0) {
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@ -488,10 +490,10 @@ std::string ARM_Disasm::DisassembleALU(Opcode opcode, uint32_t insn)
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shift_name, shift_amount);
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}
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std::string ARM_Disasm::DisassembleBranch(uint32_t addr, Opcode opcode, uint32_t insn)
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std::string ARM_Disasm::DisassembleBranch(u32 addr, Opcode opcode, u32 insn)
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{
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uint8_t cond = (insn >> 28) & 0xf;
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uint32_t offset = insn & 0xffffff;
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u8 cond = (insn >> 28) & 0xf;
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u32 offset = insn & 0xffffff;
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// Sign-extend the 24-bit offset
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if ((offset >> 23) & 1)
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offset |= 0xff000000;
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@ -504,35 +506,35 @@ std::string ARM_Disasm::DisassembleBranch(uint32_t addr, Opcode opcode, uint32_t
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return Common::StringFromFormat("%s%s\t0x%x", opname, cond_to_str(cond), addr);
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}
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std::string ARM_Disasm::DisassembleBX(uint32_t insn)
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std::string ARM_Disasm::DisassembleBX(u32 insn)
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{
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uint8_t cond = (insn >> 28) & 0xf;
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uint8_t rn = insn & 0xf;
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u8 cond = (insn >> 28) & 0xf;
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u8 rn = insn & 0xf;
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return Common::StringFromFormat("bx%s\tr%d", cond_to_str(cond), rn);
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}
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std::string ARM_Disasm::DisassembleBKPT(uint32_t insn)
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std::string ARM_Disasm::DisassembleBKPT(u32 insn)
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{
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uint8_t cond = (insn >> 28) & 0xf;
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uint32_t immed = (((insn >> 8) & 0xfff) << 4) | (insn & 0xf);
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u8 cond = (insn >> 28) & 0xf;
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u32 immed = (((insn >> 8) & 0xfff) << 4) | (insn & 0xf);
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return Common::StringFromFormat("bkpt%s\t#%d", cond_to_str(cond), immed);
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}
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std::string ARM_Disasm::DisassembleCLZ(uint32_t insn)
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std::string ARM_Disasm::DisassembleCLZ(u32 insn)
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{
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uint8_t cond = (insn >> 28) & 0xf;
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uint8_t rd = (insn >> 12) & 0xf;
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uint8_t rm = insn & 0xf;
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u8 cond = (insn >> 28) & 0xf;
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u8 rd = (insn >> 12) & 0xf;
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u8 rm = insn & 0xf;
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return Common::StringFromFormat("clz%s\tr%d, r%d", cond_to_str(cond), rd, rm);
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}
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std::string ARM_Disasm::DisassembleMediaMulDiv(Opcode opcode, uint32_t insn) {
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uint32_t cond = BITS(insn, 28, 31);
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uint32_t rd = BITS(insn, 16, 19);
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uint32_t ra = BITS(insn, 12, 15);
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uint32_t rm = BITS(insn, 8, 11);
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uint32_t m = BIT(insn, 5);
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uint32_t rn = BITS(insn, 0, 3);
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std::string ARM_Disasm::DisassembleMediaMulDiv(Opcode opcode, u32 insn) {
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u32 cond = BITS(insn, 28, 31);
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u32 rd = BITS(insn, 16, 19);
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u32 ra = BITS(insn, 12, 15);
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u32 rm = BITS(insn, 8, 11);
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u32 m = BIT(insn, 5);
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u32 rn = BITS(insn, 0, 3);
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std::string cross = "";
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if (m) {
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@ -558,17 +560,17 @@ std::string ARM_Disasm::DisassembleMediaMulDiv(Opcode opcode, uint32_t insn) {
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ext_reg.c_str());
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}
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std::string ARM_Disasm::DisassembleMemblock(Opcode opcode, uint32_t insn)
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std::string ARM_Disasm::DisassembleMemblock(Opcode opcode, u32 insn)
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{
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std::string tmp_list;
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uint8_t cond = (insn >> 28) & 0xf;
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uint8_t write_back = (insn >> 21) & 0x1;
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uint8_t bit_s = (insn >> 22) & 0x1;
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uint8_t is_up = (insn >> 23) & 0x1;
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uint8_t is_pre = (insn >> 24) & 0x1;
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uint8_t rn = (insn >> 16) & 0xf;
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uint16_t reg_list = insn & 0xffff;
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u8 cond = (insn >> 28) & 0xf;
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u8 write_back = (insn >> 21) & 0x1;
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u8 bit_s = (insn >> 22) & 0x1;
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u8 is_up = (insn >> 23) & 0x1;
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u8 is_pre = (insn >> 24) & 0x1;
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u8 rn = (insn >> 16) & 0xf;
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u16 reg_list = insn & 0xffff;
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const char *opname = opcode_names[opcode];
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@ -608,18 +610,18 @@ std::string ARM_Disasm::DisassembleMemblock(Opcode opcode, uint32_t insn)
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opname, cond_to_str(cond), addr_mode, rn, bang, tmp_list.c_str(), carret);
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}
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std::string ARM_Disasm::DisassembleMem(uint32_t insn)
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std::string ARM_Disasm::DisassembleMem(u32 insn)
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{
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uint8_t cond = (insn >> 28) & 0xf;
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uint8_t is_reg = (insn >> 25) & 0x1;
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uint8_t is_load = (insn >> 20) & 0x1;
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uint8_t write_back = (insn >> 21) & 0x1;
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uint8_t is_byte = (insn >> 22) & 0x1;
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uint8_t is_up = (insn >> 23) & 0x1;
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uint8_t is_pre = (insn >> 24) & 0x1;
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uint8_t rn = (insn >> 16) & 0xf;
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uint8_t rd = (insn >> 12) & 0xf;
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uint16_t offset = insn & 0xfff;
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u8 cond = (insn >> 28) & 0xf;
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u8 is_reg = (insn >> 25) & 0x1;
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u8 is_load = (insn >> 20) & 0x1;
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u8 write_back = (insn >> 21) & 0x1;
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u8 is_byte = (insn >> 22) & 0x1;
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u8 is_up = (insn >> 23) & 0x1;
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u8 is_pre = (insn >> 24) & 0x1;
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u8 rn = (insn >> 16) & 0xf;
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u8 rd = (insn >> 12) & 0xf;
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u16 offset = insn & 0xfff;
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const char *opname = "ldr";
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if (!is_load)
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@ -656,9 +658,9 @@ std::string ARM_Disasm::DisassembleMem(uint32_t insn)
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}
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}
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uint8_t rm = insn & 0xf;
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uint8_t shift_type = (insn >> 5) & 0x3;
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uint8_t shift_amount = (insn >> 7) & 0x1f;
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u8 rm = insn & 0xf;
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u8 shift_type = (insn >> 5) & 0x3;
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u8 shift_amount = (insn >> 7) & 0x1f;
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const char *shift_name = shift_names[shift_type];
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@ -700,19 +702,19 @@ std::string ARM_Disasm::DisassembleMem(uint32_t insn)
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shift_name, shift_amount);
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}
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std::string ARM_Disasm::DisassembleMemHalf(uint32_t insn)
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std::string ARM_Disasm::DisassembleMemHalf(u32 insn)
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{
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uint8_t cond = (insn >> 28) & 0xf;
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uint8_t is_load = (insn >> 20) & 0x1;
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uint8_t write_back = (insn >> 21) & 0x1;
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uint8_t is_immed = (insn >> 22) & 0x1;
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uint8_t is_up = (insn >> 23) & 0x1;
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uint8_t is_pre = (insn >> 24) & 0x1;
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uint8_t rn = (insn >> 16) & 0xf;
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uint8_t rd = (insn >> 12) & 0xf;
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uint8_t bits_65 = (insn >> 5) & 0x3;
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uint8_t rm = insn & 0xf;
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uint8_t offset = (((insn >> 8) & 0xf) << 4) | (insn & 0xf);
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u8 cond = (insn >> 28) & 0xf;
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u8 is_load = (insn >> 20) & 0x1;
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u8 write_back = (insn >> 21) & 0x1;
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u8 is_immed = (insn >> 22) & 0x1;
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u8 is_up = (insn >> 23) & 0x1;
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u8 is_pre = (insn >> 24) & 0x1;
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u8 rn = (insn >> 16) & 0xf;
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u8 rd = (insn >> 12) & 0xf;
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u8 bits_65 = (insn >> 5) & 0x3;
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u8 rm = insn & 0xf;
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u8 offset = (((insn >> 8) & 0xf) << 4) | (insn & 0xf);
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const char *opname = "ldr";
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if (is_load == 0)
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@ -756,78 +758,78 @@ std::string ARM_Disasm::DisassembleMemHalf(uint32_t insn)
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}
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}
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std::string ARM_Disasm::DisassembleMCR(Opcode opcode, uint32_t insn)
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std::string ARM_Disasm::DisassembleMCR(Opcode opcode, u32 insn)
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{
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uint8_t cond = (insn >> 28) & 0xf;
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uint8_t crn = (insn >> 16) & 0xf;
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uint8_t crd = (insn >> 12) & 0xf;
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uint8_t cpnum = (insn >> 8) & 0xf;
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uint8_t opcode2 = (insn >> 5) & 0x7;
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uint8_t crm = insn & 0xf;
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u8 cond = (insn >> 28) & 0xf;
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u8 crn = (insn >> 16) & 0xf;
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u8 crd = (insn >> 12) & 0xf;
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u8 cpnum = (insn >> 8) & 0xf;
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u8 opcode2 = (insn >> 5) & 0x7;
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u8 crm = insn & 0xf;
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const char *opname = opcode_names[opcode];
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return Common::StringFromFormat("%s%s\t%d, 0, r%d, cr%d, cr%d, {%d}",
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opname, cond_to_str(cond), cpnum, crd, crn, crm, opcode2);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
std::string ARM_Disasm::DisassembleMLA(Opcode opcode, uint32_t insn)
|
|
|
|
|
std::string ARM_Disasm::DisassembleMLA(Opcode opcode, u32 insn)
|
|
|
|
|
{
|
|
|
|
|
uint8_t cond = (insn >> 28) & 0xf;
|
|
|
|
|
uint8_t rd = (insn >> 16) & 0xf;
|
|
|
|
|
uint8_t rn = (insn >> 12) & 0xf;
|
|
|
|
|
uint8_t rs = (insn >> 8) & 0xf;
|
|
|
|
|
uint8_t rm = insn & 0xf;
|
|
|
|
|
uint8_t bit_s = (insn >> 20) & 1;
|
|
|
|
|
u8 cond = (insn >> 28) & 0xf;
|
|
|
|
|
u8 rd = (insn >> 16) & 0xf;
|
|
|
|
|
u8 rn = (insn >> 12) & 0xf;
|
|
|
|
|
u8 rs = (insn >> 8) & 0xf;
|
|
|
|
|
u8 rm = insn & 0xf;
|
|
|
|
|
u8 bit_s = (insn >> 20) & 1;
|
|
|
|
|
|
|
|
|
|
const char *opname = opcode_names[opcode];
|
|
|
|
|
return Common::StringFromFormat("%s%s%s\tr%d, r%d, r%d, r%d",
|
|
|
|
|
opname, cond_to_str(cond), bit_s ? "s" : "", rd, rm, rs, rn);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
std::string ARM_Disasm::DisassembleUMLAL(Opcode opcode, uint32_t insn)
|
|
|
|
|
std::string ARM_Disasm::DisassembleUMLAL(Opcode opcode, u32 insn)
|
|
|
|
|
{
|
|
|
|
|
uint8_t cond = (insn >> 28) & 0xf;
|
|
|
|
|
uint8_t rdhi = (insn >> 16) & 0xf;
|
|
|
|
|
uint8_t rdlo = (insn >> 12) & 0xf;
|
|
|
|
|
uint8_t rs = (insn >> 8) & 0xf;
|
|
|
|
|
uint8_t rm = insn & 0xf;
|
|
|
|
|
uint8_t bit_s = (insn >> 20) & 1;
|
|
|
|
|
u8 cond = (insn >> 28) & 0xf;
|
|
|
|
|
u8 rdhi = (insn >> 16) & 0xf;
|
|
|
|
|
u8 rdlo = (insn >> 12) & 0xf;
|
|
|
|
|
u8 rs = (insn >> 8) & 0xf;
|
|
|
|
|
u8 rm = insn & 0xf;
|
|
|
|
|
u8 bit_s = (insn >> 20) & 1;
|
|
|
|
|
|
|
|
|
|
const char *opname = opcode_names[opcode];
|
|
|
|
|
return Common::StringFromFormat("%s%s%s\tr%d, r%d, r%d, r%d",
|
|
|
|
|
opname, cond_to_str(cond), bit_s ? "s" : "", rdlo, rdhi, rm, rs);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
std::string ARM_Disasm::DisassembleMUL(Opcode opcode, uint32_t insn)
|
|
|
|
|
std::string ARM_Disasm::DisassembleMUL(Opcode opcode, u32 insn)
|
|
|
|
|
{
|
|
|
|
|
uint8_t cond = (insn >> 28) & 0xf;
|
|
|
|
|
uint8_t rd = (insn >> 16) & 0xf;
|
|
|
|
|
uint8_t rs = (insn >> 8) & 0xf;
|
|
|
|
|
uint8_t rm = insn & 0xf;
|
|
|
|
|
uint8_t bit_s = (insn >> 20) & 1;
|
|
|
|
|
u8 cond = (insn >> 28) & 0xf;
|
|
|
|
|
u8 rd = (insn >> 16) & 0xf;
|
|
|
|
|
u8 rs = (insn >> 8) & 0xf;
|
|
|
|
|
u8 rm = insn & 0xf;
|
|
|
|
|
u8 bit_s = (insn >> 20) & 1;
|
|
|
|
|
|
|
|
|
|
const char *opname = opcode_names[opcode];
|
|
|
|
|
return Common::StringFromFormat("%s%s%s\tr%d, r%d, r%d",
|
|
|
|
|
opname, cond_to_str(cond), bit_s ? "s" : "", rd, rm, rs);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
std::string ARM_Disasm::DisassembleMRS(uint32_t insn)
|
|
|
|
|
std::string ARM_Disasm::DisassembleMRS(u32 insn)
|
|
|
|
|
{
|
|
|
|
|
uint8_t cond = (insn >> 28) & 0xf;
|
|
|
|
|
uint8_t rd = (insn >> 12) & 0xf;
|
|
|
|
|
uint8_t ps = (insn >> 22) & 1;
|
|
|
|
|
u8 cond = (insn >> 28) & 0xf;
|
|
|
|
|
u8 rd = (insn >> 12) & 0xf;
|
|
|
|
|
u8 ps = (insn >> 22) & 1;
|
|
|
|
|
|
|
|
|
|
return Common::StringFromFormat("mrs%s\tr%d, %s", cond_to_str(cond), rd, ps ? "spsr" : "cpsr");
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
std::string ARM_Disasm::DisassembleMSR(uint32_t insn)
|
|
|
|
|
std::string ARM_Disasm::DisassembleMSR(u32 insn)
|
|
|
|
|
{
|
|
|
|
|
char flags[8];
|
|
|
|
|
int flag_index = 0;
|
|
|
|
|
uint8_t cond = (insn >> 28) & 0xf;
|
|
|
|
|
uint8_t is_immed = (insn >> 25) & 0x1;
|
|
|
|
|
uint8_t pd = (insn >> 22) & 1;
|
|
|
|
|
uint8_t mask = (insn >> 16) & 0xf;
|
|
|
|
|
u8 cond = (insn >> 28) & 0xf;
|
|
|
|
|
u8 is_immed = (insn >> 25) & 0x1;
|
|
|
|
|
u8 pd = (insn >> 22) & 1;
|
|
|
|
|
u8 mask = (insn >> 16) & 0xf;
|
|
|
|
|
|
|
|
|
|
if (mask & 1)
|
|
|
|
|
flags[flag_index++] = 'c';
|
|
|
|
@ -840,44 +842,44 @@ std::string ARM_Disasm::DisassembleMSR(uint32_t insn)
|
|
|
|
|
flags[flag_index] = 0;
|
|
|
|
|
|
|
|
|
|
if (is_immed) {
|
|
|
|
|
uint32_t immed = insn & 0xff;
|
|
|
|
|
uint8_t rotate = (insn >> 8) & 0xf;
|
|
|
|
|
uint8_t rotate2 = rotate << 1;
|
|
|
|
|
uint32_t rotated_val = (immed >> rotate2) | (immed << (32 - rotate2));
|
|
|
|
|
u32 immed = insn & 0xff;
|
|
|
|
|
u8 rotate = (insn >> 8) & 0xf;
|
|
|
|
|
u8 rotate2 = rotate << 1;
|
|
|
|
|
u32 rotated_val = (immed >> rotate2) | (immed << (32 - rotate2));
|
|
|
|
|
return Common::StringFromFormat("msr%s\t%s_%s, #0x%x",
|
|
|
|
|
cond_to_str(cond), pd ? "spsr" : "cpsr", flags, rotated_val);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
uint8_t rm = insn & 0xf;
|
|
|
|
|
u8 rm = insn & 0xf;
|
|
|
|
|
|
|
|
|
|
return Common::StringFromFormat("msr%s\t%s_%s, r%d",
|
|
|
|
|
cond_to_str(cond), pd ? "spsr" : "cpsr", flags, rm);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
std::string ARM_Disasm::DisassembleNoOperands(Opcode opcode, uint32_t insn)
|
|
|
|
|
std::string ARM_Disasm::DisassembleNoOperands(Opcode opcode, u32 insn)
|
|
|
|
|
{
|
|
|
|
|
uint32_t cond = BITS(insn, 28, 31);
|
|
|
|
|
u32 cond = BITS(insn, 28, 31);
|
|
|
|
|
return Common::StringFromFormat("%s%s", opcode_names[opcode], cond_to_str(cond));
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
std::string ARM_Disasm::DisassembleParallelAddSub(Opcode opcode, uint32_t insn) {
|
|
|
|
|
uint32_t cond = BITS(insn, 28, 31);
|
|
|
|
|
uint32_t rn = BITS(insn, 16, 19);
|
|
|
|
|
uint32_t rd = BITS(insn, 12, 15);
|
|
|
|
|
uint32_t rm = BITS(insn, 0, 3);
|
|
|
|
|
std::string ARM_Disasm::DisassembleParallelAddSub(Opcode opcode, u32 insn) {
|
|
|
|
|
u32 cond = BITS(insn, 28, 31);
|
|
|
|
|
u32 rn = BITS(insn, 16, 19);
|
|
|
|
|
u32 rd = BITS(insn, 12, 15);
|
|
|
|
|
u32 rm = BITS(insn, 0, 3);
|
|
|
|
|
|
|
|
|
|
return Common::StringFromFormat("%s%s\tr%u, r%u, r%u", opcode_names[opcode], cond_to_str(cond),
|
|
|
|
|
rd, rn, rm);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
std::string ARM_Disasm::DisassemblePKH(uint32_t insn)
|
|
|
|
|
std::string ARM_Disasm::DisassemblePKH(u32 insn)
|
|
|
|
|
{
|
|
|
|
|
uint32_t cond = BITS(insn, 28, 31);
|
|
|
|
|
uint32_t rn = BITS(insn, 16, 19);
|
|
|
|
|
uint32_t rd = BITS(insn, 12, 15);
|
|
|
|
|
uint32_t imm5 = BITS(insn, 7, 11);
|
|
|
|
|
uint32_t tb = BIT(insn, 6);
|
|
|
|
|
uint32_t rm = BITS(insn, 0, 3);
|
|
|
|
|
u32 cond = BITS(insn, 28, 31);
|
|
|
|
|
u32 rn = BITS(insn, 16, 19);
|
|
|
|
|
u32 rd = BITS(insn, 12, 15);
|
|
|
|
|
u32 imm5 = BITS(insn, 7, 11);
|
|
|
|
|
u32 tb = BIT(insn, 6);
|
|
|
|
|
u32 rm = BITS(insn, 0, 3);
|
|
|
|
|
|
|
|
|
|
std::string suffix = tb ? "tb" : "bt";
|
|
|
|
|
std::string shift = "";
|
|
|
|
@ -894,22 +896,22 @@ std::string ARM_Disasm::DisassemblePKH(uint32_t insn)
|
|
|
|
|
rd, rn, rm, shift.c_str());
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
std::string ARM_Disasm::DisassemblePLD(uint32_t insn)
|
|
|
|
|
std::string ARM_Disasm::DisassemblePLD(u32 insn)
|
|
|
|
|
{
|
|
|
|
|
uint8_t is_reg = (insn >> 25) & 0x1;
|
|
|
|
|
uint8_t is_up = (insn >> 23) & 0x1;
|
|
|
|
|
uint8_t rn = (insn >> 16) & 0xf;
|
|
|
|
|
u8 is_reg = (insn >> 25) & 0x1;
|
|
|
|
|
u8 is_up = (insn >> 23) & 0x1;
|
|
|
|
|
u8 rn = (insn >> 16) & 0xf;
|
|
|
|
|
|
|
|
|
|
const char *minus = "";
|
|
|
|
|
if (is_up == 0)
|
|
|
|
|
minus = "-";
|
|
|
|
|
|
|
|
|
|
if (is_reg) {
|
|
|
|
|
uint8_t rm = insn & 0xf;
|
|
|
|
|
u8 rm = insn & 0xf;
|
|
|
|
|
return Common::StringFromFormat("pld\t[r%d, %sr%d]", rn, minus, rm);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
uint16_t offset = insn & 0xfff;
|
|
|
|
|
u16 offset = insn & 0xfff;
|
|
|
|
|
if (offset == 0) {
|
|
|
|
|
return Common::StringFromFormat("pld\t[r%d]", rn);
|
|
|
|
|
} else {
|
|
|
|
@ -917,20 +919,20 @@ std::string ARM_Disasm::DisassemblePLD(uint32_t insn)
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
std::string ARM_Disasm::DisassembleREV(Opcode opcode, uint32_t insn) {
|
|
|
|
|
uint32_t cond = BITS(insn, 28, 31);
|
|
|
|
|
uint32_t rd = BITS(insn, 12, 15);
|
|
|
|
|
uint32_t rm = BITS(insn, 0, 3);
|
|
|
|
|
std::string ARM_Disasm::DisassembleREV(Opcode opcode, u32 insn) {
|
|
|
|
|
u32 cond = BITS(insn, 28, 31);
|
|
|
|
|
u32 rd = BITS(insn, 12, 15);
|
|
|
|
|
u32 rm = BITS(insn, 0, 3);
|
|
|
|
|
|
|
|
|
|
return Common::StringFromFormat("%s%s\tr%u, r%u", opcode_names[opcode], cond_to_str(cond),
|
|
|
|
|
rd, rm);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
std::string ARM_Disasm::DisassembleREX(Opcode opcode, uint32_t insn) {
|
|
|
|
|
uint32_t rn = BITS(insn, 16, 19);
|
|
|
|
|
uint32_t rd = BITS(insn, 12, 15);
|
|
|
|
|
uint32_t rt = BITS(insn, 0, 3);
|
|
|
|
|
uint32_t cond = BITS(insn, 28, 31);
|
|
|
|
|
std::string ARM_Disasm::DisassembleREX(Opcode opcode, u32 insn) {
|
|
|
|
|
u32 rn = BITS(insn, 16, 19);
|
|
|
|
|
u32 rd = BITS(insn, 12, 15);
|
|
|
|
|
u32 rt = BITS(insn, 0, 3);
|
|
|
|
|
u32 cond = BITS(insn, 28, 31);
|
|
|
|
|
|
|
|
|
|
switch (opcode) {
|
|
|
|
|
case OP_STREX:
|
|
|
|
@ -956,13 +958,13 @@ std::string ARM_Disasm::DisassembleREX(Opcode opcode, uint32_t insn) {
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
std::string ARM_Disasm::DisassembleSAT(Opcode opcode, uint32_t insn) {
|
|
|
|
|
uint32_t cond = BITS(insn, 28, 31);
|
|
|
|
|
uint32_t sat_imm = BITS(insn, 16, 20);
|
|
|
|
|
uint32_t rd = BITS(insn, 12, 15);
|
|
|
|
|
uint32_t imm5 = BITS(insn, 7, 11);
|
|
|
|
|
uint32_t sh = BIT(insn, 6);
|
|
|
|
|
uint32_t rn = BITS(insn, 0, 3);
|
|
|
|
|
std::string ARM_Disasm::DisassembleSAT(Opcode opcode, u32 insn) {
|
|
|
|
|
u32 cond = BITS(insn, 28, 31);
|
|
|
|
|
u32 sat_imm = BITS(insn, 16, 20);
|
|
|
|
|
u32 rd = BITS(insn, 12, 15);
|
|
|
|
|
u32 imm5 = BITS(insn, 7, 11);
|
|
|
|
|
u32 sh = BIT(insn, 6);
|
|
|
|
|
u32 rn = BITS(insn, 0, 3);
|
|
|
|
|
|
|
|
|
|
std::string shift_part = "";
|
|
|
|
|
bool opcode_has_shift = (opcode == OP_SSAT) || (opcode == OP_USAT);
|
|
|
|
@ -984,42 +986,42 @@ std::string ARM_Disasm::DisassembleSAT(Opcode opcode, uint32_t insn) {
|
|
|
|
|
sat_imm, rn, shift_part.c_str());
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
std::string ARM_Disasm::DisassembleSEL(uint32_t insn) {
|
|
|
|
|
uint32_t cond = BITS(insn, 28, 31);
|
|
|
|
|
uint32_t rn = BITS(insn, 16, 19);
|
|
|
|
|
uint32_t rd = BITS(insn, 12, 15);
|
|
|
|
|
uint32_t rm = BITS(insn, 0, 3);
|
|
|
|
|
std::string ARM_Disasm::DisassembleSEL(u32 insn) {
|
|
|
|
|
u32 cond = BITS(insn, 28, 31);
|
|
|
|
|
u32 rn = BITS(insn, 16, 19);
|
|
|
|
|
u32 rd = BITS(insn, 12, 15);
|
|
|
|
|
u32 rm = BITS(insn, 0, 3);
|
|
|
|
|
|
|
|
|
|
return Common::StringFromFormat("%s%s\tr%u, r%u, r%u", opcode_names[OP_SEL], cond_to_str(cond),
|
|
|
|
|
rd, rn, rm);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
std::string ARM_Disasm::DisassembleSWI(uint32_t insn)
|
|
|
|
|
std::string ARM_Disasm::DisassembleSWI(u32 insn)
|
|
|
|
|
{
|
|
|
|
|
uint8_t cond = (insn >> 28) & 0xf;
|
|
|
|
|
uint32_t sysnum = insn & 0x00ffffff;
|
|
|
|
|
u8 cond = (insn >> 28) & 0xf;
|
|
|
|
|
u32 sysnum = insn & 0x00ffffff;
|
|
|
|
|
|
|
|
|
|
return Common::StringFromFormat("swi%s 0x%x", cond_to_str(cond), sysnum);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
std::string ARM_Disasm::DisassembleSWP(Opcode opcode, uint32_t insn)
|
|
|
|
|
std::string ARM_Disasm::DisassembleSWP(Opcode opcode, u32 insn)
|
|
|
|
|
{
|
|
|
|
|
uint8_t cond = (insn >> 28) & 0xf;
|
|
|
|
|
uint8_t rn = (insn >> 16) & 0xf;
|
|
|
|
|
uint8_t rd = (insn >> 12) & 0xf;
|
|
|
|
|
uint8_t rm = insn & 0xf;
|
|
|
|
|
u8 cond = (insn >> 28) & 0xf;
|
|
|
|
|
u8 rn = (insn >> 16) & 0xf;
|
|
|
|
|
u8 rd = (insn >> 12) & 0xf;
|
|
|
|
|
u8 rm = insn & 0xf;
|
|
|
|
|
|
|
|
|
|
const char *opname = opcode_names[opcode];
|
|
|
|
|
return Common::StringFromFormat("%s%s\tr%d, r%d, [r%d]", opname, cond_to_str(cond), rd, rm, rn);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
std::string ARM_Disasm::DisassembleXT(Opcode opcode, uint32_t insn)
|
|
|
|
|
std::string ARM_Disasm::DisassembleXT(Opcode opcode, u32 insn)
|
|
|
|
|
{
|
|
|
|
|
uint32_t cond = BITS(insn, 28, 31);
|
|
|
|
|
uint32_t rn = BITS(insn, 16, 19);
|
|
|
|
|
uint32_t rd = BITS(insn, 12, 15);
|
|
|
|
|
uint32_t rotate = BITS(insn, 10, 11);
|
|
|
|
|
uint32_t rm = BITS(insn, 0, 3);
|
|
|
|
|
u32 cond = BITS(insn, 28, 31);
|
|
|
|
|
u32 rn = BITS(insn, 16, 19);
|
|
|
|
|
u32 rd = BITS(insn, 12, 15);
|
|
|
|
|
u32 rotate = BITS(insn, 10, 11);
|
|
|
|
|
u32 rm = BITS(insn, 0, 3);
|
|
|
|
|
|
|
|
|
|
std::string rn_part = "";
|
|
|
|
|
static std::unordered_set<Opcode, std::hash<int>> extend_with_add = {
|
|
|
|
@ -1037,8 +1039,8 @@ std::string ARM_Disasm::DisassembleXT(Opcode opcode, uint32_t insn)
|
|
|
|
|
rd, rn_part.c_str(), rm, rotate_part.c_str());
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
Opcode ARM_Disasm::Decode(uint32_t insn) {
|
|
|
|
|
uint32_t bits27_26 = (insn >> 26) & 0x3;
|
|
|
|
|
Opcode ARM_Disasm::Decode(u32 insn) {
|
|
|
|
|
u32 bits27_26 = (insn >> 26) & 0x3;
|
|
|
|
|
switch (bits27_26) {
|
|
|
|
|
case 0x0:
|
|
|
|
|
return Decode00(insn);
|
|
|
|
@ -1052,9 +1054,9 @@ Opcode ARM_Disasm::Decode(uint32_t insn) {
|
|
|
|
|
return OP_INVALID;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
Opcode ARM_Disasm::Decode00(uint32_t insn) {
|
|
|
|
|
uint8_t bit25 = (insn >> 25) & 0x1;
|
|
|
|
|
uint8_t bit4 = (insn >> 4) & 0x1;
|
|
|
|
|
Opcode ARM_Disasm::Decode00(u32 insn) {
|
|
|
|
|
u8 bit25 = (insn >> 25) & 0x1;
|
|
|
|
|
u8 bit4 = (insn >> 4) & 0x1;
|
|
|
|
|
if (bit25 == 0 && bit4 == 1) {
|
|
|
|
|
if ((insn & 0x0ffffff0) == 0x012fff10) {
|
|
|
|
|
// Bx instruction
|
|
|
|
@ -1068,9 +1070,9 @@ Opcode ARM_Disasm::Decode00(uint32_t insn) {
|
|
|
|
|
// Bkpt instruction
|
|
|
|
|
return OP_BKPT;
|
|
|
|
|
}
|
|
|
|
|
uint32_t bits7_4 = (insn >> 4) & 0xf;
|
|
|
|
|
u32 bits7_4 = (insn >> 4) & 0xf;
|
|
|
|
|
if (bits7_4 == 0x9) {
|
|
|
|
|
uint32_t bit24 = BIT(insn, 24);
|
|
|
|
|
u32 bit24 = BIT(insn, 24);
|
|
|
|
|
if (bit24) {
|
|
|
|
|
return DecodeSyncPrimitive(insn);
|
|
|
|
|
}
|
|
|
|
@ -1078,14 +1080,14 @@ Opcode ARM_Disasm::Decode00(uint32_t insn) {
|
|
|
|
|
return DecodeMUL(insn);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
uint8_t bit7 = (insn >> 7) & 0x1;
|
|
|
|
|
u8 bit7 = (insn >> 7) & 0x1;
|
|
|
|
|
if (bit7 == 1) {
|
|
|
|
|
// One of the load/store halfword/byte instructions
|
|
|
|
|
return DecodeLDRH(insn);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
uint32_t op1 = BITS(insn, 20, 24);
|
|
|
|
|
u32 op1 = BITS(insn, 20, 24);
|
|
|
|
|
if (bit25 && (op1 == 0x12 || op1 == 0x16)) {
|
|
|
|
|
// One of the MSR (immediate) and hints instructions
|
|
|
|
|
return DecodeMSRImmAndHints(insn);
|
|
|
|
@ -1095,13 +1097,13 @@ Opcode ARM_Disasm::Decode00(uint32_t insn) {
|
|
|
|
|
return DecodeALU(insn);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
Opcode ARM_Disasm::Decode01(uint32_t insn) {
|
|
|
|
|
uint8_t is_reg = (insn >> 25) & 0x1;
|
|
|
|
|
uint8_t bit4 = (insn >> 4) & 0x1;
|
|
|
|
|
Opcode ARM_Disasm::Decode01(u32 insn) {
|
|
|
|
|
u8 is_reg = (insn >> 25) & 0x1;
|
|
|
|
|
u8 bit4 = (insn >> 4) & 0x1;
|
|
|
|
|
if (is_reg == 1 && bit4 == 1)
|
|
|
|
|
return DecodeMedia(insn);
|
|
|
|
|
uint8_t is_load = (insn >> 20) & 0x1;
|
|
|
|
|
uint8_t is_byte = (insn >> 22) & 0x1;
|
|
|
|
|
u8 is_load = (insn >> 20) & 0x1;
|
|
|
|
|
u8 is_byte = (insn >> 22) & 0x1;
|
|
|
|
|
if ((insn & 0xfd70f000) == 0xf550f000) {
|
|
|
|
|
// Pre-load
|
|
|
|
|
return OP_PLD;
|
|
|
|
@ -1126,11 +1128,11 @@ Opcode ARM_Disasm::Decode01(uint32_t insn) {
|
|
|
|
|
return OP_STR;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
Opcode ARM_Disasm::Decode10(uint32_t insn) {
|
|
|
|
|
uint8_t bit25 = (insn >> 25) & 0x1;
|
|
|
|
|
Opcode ARM_Disasm::Decode10(u32 insn) {
|
|
|
|
|
u8 bit25 = (insn >> 25) & 0x1;
|
|
|
|
|
if (bit25 == 0) {
|
|
|
|
|
// LDM/STM
|
|
|
|
|
uint8_t is_load = (insn >> 20) & 0x1;
|
|
|
|
|
u8 is_load = (insn >> 20) & 0x1;
|
|
|
|
|
if (is_load)
|
|
|
|
|
return OP_LDM;
|
|
|
|
|
return OP_STM;
|
|
|
|
@ -1143,11 +1145,11 @@ Opcode ARM_Disasm::Decode10(uint32_t insn) {
|
|
|
|
|
return OP_B;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
Opcode ARM_Disasm::Decode11(uint32_t insn) {
|
|
|
|
|
uint8_t bit25 = (insn >> 25) & 0x1;
|
|
|
|
|
Opcode ARM_Disasm::Decode11(u32 insn) {
|
|
|
|
|
u8 bit25 = (insn >> 25) & 0x1;
|
|
|
|
|
if (bit25 == 0) {
|
|
|
|
|
// LDC, SDC
|
|
|
|
|
uint8_t is_load = (insn >> 20) & 0x1;
|
|
|
|
|
u8 is_load = (insn >> 20) & 0x1;
|
|
|
|
|
if (is_load) {
|
|
|
|
|
// LDC
|
|
|
|
|
return OP_LDC;
|
|
|
|
@ -1156,18 +1158,18 @@ Opcode ARM_Disasm::Decode11(uint32_t insn) {
|
|
|
|
|
return OP_STC;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
uint8_t bit24 = (insn >> 24) & 0x1;
|
|
|
|
|
u8 bit24 = (insn >> 24) & 0x1;
|
|
|
|
|
if (bit24 == 0x1) {
|
|
|
|
|
// SWI
|
|
|
|
|
return OP_SWI;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
uint8_t bit4 = (insn >> 4) & 0x1;
|
|
|
|
|
uint8_t cpnum = (insn >> 8) & 0xf;
|
|
|
|
|
u8 bit4 = (insn >> 4) & 0x1;
|
|
|
|
|
u8 cpnum = (insn >> 8) & 0xf;
|
|
|
|
|
|
|
|
|
|
if (cpnum == 15) {
|
|
|
|
|
// Special case for coprocessor 15
|
|
|
|
|
uint8_t opcode = (insn >> 21) & 0x7;
|
|
|
|
|
u8 opcode = (insn >> 21) & 0x7;
|
|
|
|
|
if (bit4 == 0 || opcode != 0) {
|
|
|
|
|
// This is an unexpected bit pattern. Create an undefined
|
|
|
|
|
// instruction in case this is ever executed.
|
|
|
|
@ -1175,7 +1177,7 @@ Opcode ARM_Disasm::Decode11(uint32_t insn) {
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// MRC, MCR
|
|
|
|
|
uint8_t is_mrc = (insn >> 20) & 0x1;
|
|
|
|
|
u8 is_mrc = (insn >> 20) & 0x1;
|
|
|
|
|
if (is_mrc)
|
|
|
|
|
return OP_MRC;
|
|
|
|
|
return OP_MCR;
|
|
|
|
@ -1186,15 +1188,15 @@ Opcode ARM_Disasm::Decode11(uint32_t insn) {
|
|
|
|
|
return OP_CDP;
|
|
|
|
|
}
|
|
|
|
|
// MRC, MCR
|
|
|
|
|
uint8_t is_mrc = (insn >> 20) & 0x1;
|
|
|
|
|
u8 is_mrc = (insn >> 20) & 0x1;
|
|
|
|
|
if (is_mrc)
|
|
|
|
|
return OP_MRC;
|
|
|
|
|
return OP_MCR;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
Opcode ARM_Disasm::DecodeSyncPrimitive(uint32_t insn) {
|
|
|
|
|
uint32_t op = BITS(insn, 20, 23);
|
|
|
|
|
uint32_t bit22 = BIT(insn, 22);
|
|
|
|
|
Opcode ARM_Disasm::DecodeSyncPrimitive(u32 insn) {
|
|
|
|
|
u32 op = BITS(insn, 20, 23);
|
|
|
|
|
u32 bit22 = BIT(insn, 22);
|
|
|
|
|
switch (op) {
|
|
|
|
|
case 0x0:
|
|
|
|
|
if (bit22)
|
|
|
|
@ -1221,10 +1223,10 @@ Opcode ARM_Disasm::DecodeSyncPrimitive(uint32_t insn) {
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
Opcode ARM_Disasm::DecodeParallelAddSub(uint32_t insn) {
|
|
|
|
|
uint32_t op1 = BITS(insn, 20, 21);
|
|
|
|
|
uint32_t op2 = BITS(insn, 5, 7);
|
|
|
|
|
uint32_t is_unsigned = BIT(insn, 22);
|
|
|
|
|
Opcode ARM_Disasm::DecodeParallelAddSub(u32 insn) {
|
|
|
|
|
u32 op1 = BITS(insn, 20, 21);
|
|
|
|
|
u32 op2 = BITS(insn, 5, 7);
|
|
|
|
|
u32 is_unsigned = BIT(insn, 22);
|
|
|
|
|
|
|
|
|
|
if (op1 == 0x0 || op2 == 0x5 || op2 == 0x6)
|
|
|
|
|
return OP_UNDEFINED;
|
|
|
|
@ -1260,14 +1262,14 @@ Opcode ARM_Disasm::DecodeParallelAddSub(uint32_t insn) {
|
|
|
|
|
OP_SHSUB8, OP_UHSUB8
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
uint32_t opcode_index = op1 * 12 + op2 * 2 + is_unsigned;
|
|
|
|
|
u32 opcode_index = op1 * 12 + op2 * 2 + is_unsigned;
|
|
|
|
|
return opcodes[opcode_index];
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
Opcode ARM_Disasm::DecodePackingSaturationReversal(uint32_t insn) {
|
|
|
|
|
uint32_t op1 = BITS(insn, 20, 22);
|
|
|
|
|
uint32_t a = BITS(insn, 16, 19);
|
|
|
|
|
uint32_t op2 = BITS(insn, 5, 7);
|
|
|
|
|
Opcode ARM_Disasm::DecodePackingSaturationReversal(u32 insn) {
|
|
|
|
|
u32 op1 = BITS(insn, 20, 22);
|
|
|
|
|
u32 a = BITS(insn, 16, 19);
|
|
|
|
|
u32 op2 = BITS(insn, 5, 7);
|
|
|
|
|
|
|
|
|
|
switch (op1) {
|
|
|
|
|
case 0x0:
|
|
|
|
@ -1335,16 +1337,16 @@ Opcode ARM_Disasm::DecodePackingSaturationReversal(uint32_t insn) {
|
|
|
|
|
return OP_UNDEFINED;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
Opcode ARM_Disasm::DecodeMUL(uint32_t insn) {
|
|
|
|
|
uint8_t bit24 = (insn >> 24) & 0x1;
|
|
|
|
|
Opcode ARM_Disasm::DecodeMUL(u32 insn) {
|
|
|
|
|
u8 bit24 = (insn >> 24) & 0x1;
|
|
|
|
|
if (bit24 != 0) {
|
|
|
|
|
// This is an unexpected bit pattern. Create an undefined
|
|
|
|
|
// instruction in case this is ever executed.
|
|
|
|
|
return OP_UNDEFINED;
|
|
|
|
|
}
|
|
|
|
|
uint8_t bit23 = (insn >> 23) & 0x1;
|
|
|
|
|
uint8_t bit22_U = (insn >> 22) & 0x1;
|
|
|
|
|
uint8_t bit21_A = (insn >> 21) & 0x1;
|
|
|
|
|
u8 bit23 = (insn >> 23) & 0x1;
|
|
|
|
|
u8 bit22_U = (insn >> 22) & 0x1;
|
|
|
|
|
u8 bit21_A = (insn >> 21) & 0x1;
|
|
|
|
|
if (bit23 == 0) {
|
|
|
|
|
// 32-bit multiply
|
|
|
|
|
if (bit22_U != 0) {
|
|
|
|
@ -1369,10 +1371,10 @@ Opcode ARM_Disasm::DecodeMUL(uint32_t insn) {
|
|
|
|
|
return OP_SMLAL;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
Opcode ARM_Disasm::DecodeMSRImmAndHints(uint32_t insn) {
|
|
|
|
|
uint32_t op = BIT(insn, 22);
|
|
|
|
|
uint32_t op1 = BITS(insn, 16, 19);
|
|
|
|
|
uint32_t op2 = BITS(insn, 0, 7);
|
|
|
|
|
Opcode ARM_Disasm::DecodeMSRImmAndHints(u32 insn) {
|
|
|
|
|
u32 op = BIT(insn, 22);
|
|
|
|
|
u32 op1 = BITS(insn, 16, 19);
|
|
|
|
|
u32 op2 = BITS(insn, 0, 7);
|
|
|
|
|
|
|
|
|
|
if (op == 0 && op1 == 0) {
|
|
|
|
|
switch (op2) {
|
|
|
|
@ -1394,10 +1396,10 @@ Opcode ARM_Disasm::DecodeMSRImmAndHints(uint32_t insn) {
|
|
|
|
|
return OP_MSR;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
Opcode ARM_Disasm::DecodeMediaMulDiv(uint32_t insn) {
|
|
|
|
|
uint32_t op1 = BITS(insn, 20, 22);
|
|
|
|
|
uint32_t op2_h = BITS(insn, 6, 7);
|
|
|
|
|
uint32_t a = BITS(insn, 12, 15);
|
|
|
|
|
Opcode ARM_Disasm::DecodeMediaMulDiv(u32 insn) {
|
|
|
|
|
u32 op1 = BITS(insn, 20, 22);
|
|
|
|
|
u32 op2_h = BITS(insn, 6, 7);
|
|
|
|
|
u32 a = BITS(insn, 12, 15);
|
|
|
|
|
|
|
|
|
|
switch (op1) {
|
|
|
|
|
case 0x0:
|
|
|
|
@ -1436,10 +1438,10 @@ Opcode ARM_Disasm::DecodeMediaMulDiv(uint32_t insn) {
|
|
|
|
|
return OP_UNDEFINED;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
Opcode ARM_Disasm::DecodeMedia(uint32_t insn) {
|
|
|
|
|
uint32_t op1 = BITS(insn, 20, 24);
|
|
|
|
|
uint32_t rd = BITS(insn, 12, 15);
|
|
|
|
|
uint32_t op2 = BITS(insn, 5, 7);
|
|
|
|
|
Opcode ARM_Disasm::DecodeMedia(u32 insn) {
|
|
|
|
|
u32 op1 = BITS(insn, 20, 24);
|
|
|
|
|
u32 rd = BITS(insn, 12, 15);
|
|
|
|
|
u32 op2 = BITS(insn, 5, 7);
|
|
|
|
|
|
|
|
|
|
switch (BITS(op1, 3, 4)) {
|
|
|
|
|
case 0x0:
|
|
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@ -1464,9 +1466,9 @@ Opcode ARM_Disasm::DecodeMedia(uint32_t insn) {
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return OP_UNDEFINED;
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}
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Opcode ARM_Disasm::DecodeLDRH(uint32_t insn) {
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uint8_t is_load = (insn >> 20) & 0x1;
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uint8_t bits_65 = (insn >> 5) & 0x3;
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Opcode ARM_Disasm::DecodeLDRH(u32 insn) {
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u8 is_load = (insn >> 20) & 0x1;
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u8 bits_65 = (insn >> 5) & 0x3;
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if (is_load) {
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if (bits_65 == 0x1) {
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// Load unsigned halfword
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@ -1494,12 +1496,12 @@ Opcode ARM_Disasm::DecodeLDRH(uint32_t insn) {
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return OP_STRH;
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}
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Opcode ARM_Disasm::DecodeALU(uint32_t insn) {
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uint8_t is_immed = (insn >> 25) & 0x1;
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uint8_t opcode = (insn >> 21) & 0xf;
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uint8_t bit_s = (insn >> 20) & 1;
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uint8_t shift_is_reg = (insn >> 4) & 1;
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uint8_t bit7 = (insn >> 7) & 1;
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Opcode ARM_Disasm::DecodeALU(u32 insn) {
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u8 is_immed = (insn >> 25) & 0x1;
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u8 opcode = (insn >> 21) & 0xf;
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u8 bit_s = (insn >> 20) & 1;
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u8 shift_is_reg = (insn >> 4) & 1;
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u8 bit7 = (insn >> 7) & 1;
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if (!is_immed && shift_is_reg && (bit7 != 0)) {
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// This is an unexpected bit pattern. Create an undefined
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// instruction in case this is ever executed.
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