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Add xchg_eax_r32(0x91~0x97) instruction

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tuz358
2018-03-06 10:00:07 +09:00
parent 35addee260
commit 1caebfc67e
2 changed files with 12 additions and 0 deletions
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11
instructions.cpp
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@@ -58,6 +58,9 @@ void Instructions::init_instructions(){
this->instructions[0x83] = &Instructions::opcode_83;
this->instructions[0x89] = &Instructions::mov_rm32_r32;
this->instructions[0x90] = &Instructions::nop;
for(int i=0;i<7;i++){
this->instructions[0x91+i] = &Instructions::xchg_eax_r32;
}
this->instructions[0xb8] = &Instructions::mov_eax_imm32;
this->instructions[0xb9] = &Instructions::mov_ecx_imm32;
this->instructions[0xba] = &Instructions::mov_edx_imm32;
@@ -448,6 +451,14 @@ void Instructions::nop(){
//printf("nop called.\n");
}
void Instructions::xchg_eax_r32(){
//printf("xchg_eax_r32 called.\n");
uint8_t opcode = memory.read_uint8(this->eip - 1);
this->registers[0] ^= this->registers[opcode - 0x90];
this->registers[opcode - 0x90] ^= this->registers[0];
this->registers[0] ^= this->registers[opcode - 0x90];
}
void Instructions::mov_eax_imm32(){
//printf("mov_eax_imm32 called.\n");