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Add or_r32_rm32(0x0b) instruction

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tuz358
2018-03-06 10:51:16 +09:00
parent a3fde16a49
commit 10d45e5c9e
2 changed files with 52 additions and 0 deletions
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1
include/instructions.h
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@@ -31,6 +31,7 @@ public:
void add_r32_rm32(); // 0x03 void add_r32_rm32(); // 0x03
void add_eax_imm32(); // 0x05 void add_eax_imm32(); // 0x05
void or_rm32_r32(); // 0x09 void or_rm32_r32(); // 0x09
void or_r32_rm32(); // 0x0b
void xor_rm32_r32(); // 0x31 void xor_rm32_r32(); // 0x31
void inc_eax(); // 0x40 void inc_eax(); // 0x40
void inc_ecx(); // 0x41 void inc_ecx(); // 0x41

51
instructions.cpp
View File

@@ -24,6 +24,7 @@ void Instructions::init_instructions(){
this->instructions[0x03] = &Instructions::add_r32_rm32; this->instructions[0x03] = &Instructions::add_r32_rm32;
this->instructions[0x05] = &Instructions::add_eax_imm32; this->instructions[0x05] = &Instructions::add_eax_imm32;
this->instructions[0x09] = &Instructions::or_rm32_r32; this->instructions[0x09] = &Instructions::or_rm32_r32;
this->instructions[0x0b] = &Instructions::or_r32_rm32;
this->instructions[0x31] = &Instructions::xor_rm32_r32; this->instructions[0x31] = &Instructions::xor_rm32_r32;
this->instructions[0x40] = &Instructions::inc_eax; this->instructions[0x40] = &Instructions::inc_eax;
this->instructions[0x41] = &Instructions::inc_ecx; this->instructions[0x41] = &Instructions::inc_ecx;
@@ -254,6 +255,56 @@ void Instructions::or_rm32_r32(){
} }
} }
void Instructions::or_r32_rm32(){
//printf("or_r32_rm32 called.\n");
uint32_t addr, dst, imm32;
uint8_t imm8;
this->modrm = memory.read_uint8(this->eip);
this->calc_modrm();
switch (this->mod) {
case 0:
// or R, [M]
// addr : M
this->eip++;
addr = this->registers[this->M];
// dst : data of [M]
dst = memory.read_uint32(addr);
this->registers[this->R] |= dst;
break;
case 1:
// or R, [M+imm8]
this->eip++;
imm8 = memory.read_uint8(this->eip);
// addr : M
addr = this->registers[this->M];
// dst : data of [M+imm8]
dst = memory.read_uint32(addr + imm8);
this->registers[this->R] |= dst;
this->eip++;
break;
case 2:
// or R, [M+imm32]
this->eip++;
imm32 = memory.read_uint32(this->eip);
imm32 = swap_endian32(imm32);
// addr : M
addr = this->registers[this->M];
// dst : data of [M+imm32]
dst = memory.read_uint32(addr + imm32); // error
this->registers[this->R] |= dst;
this->eip += 4;
break;
default:
// case mod == 3
// or R, M
this->eip++;
this->registers[this->R] |= this->registers[this->M];
break;
}
}
void Instructions::xor_rm32_r32(){ void Instructions::xor_rm32_r32(){
//printf("xor_rm32_r32 called.\n"); //printf("xor_rm32_r32 called.\n");
uint32_t addr, dst, imm32; uint32_t addr, dst, imm32;