Mirrors/cpu-emulator
1
0
Fork 0
mirror of https://github.com/tuz358/cpu-emulator.git synced 2025-12-18 04:54:36 +03:00
Code Issues Actions Packages Projects Releases Wiki Activity

Add adc_rm32_r32(0x11) instruction

Browse Source
This commit is contained in:
tuz358
2018-03-12 12:43:36 +09:00
parent b9174cf75f
commit 584179ee7d
2 changed files with 52 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
include/instructions.h
View File

@@ -34,6 +34,7 @@ public:
void or_rm32_r32(); // 0x09
void or_r32_rm32(); // 0x0b
void or_eax_imm32(); // 0x0d
void adc_rm32_r32(); // 0x11
void and_rm32_r32(); // 0x21
void and_r32_rm32(); // 0x23
void and_eax_imm32(); // 0x25

51
instructions.cpp
View File

@@ -26,6 +26,7 @@ void Instructions::init_instructions(){
this->instructions[0x09] = &Instructions::or_rm32_r32;
this->instructions[0x0b] = &Instructions::or_r32_rm32;
this->instructions[0x0d] = &Instructions::or_eax_imm32;
this->instructions[0x11] = &Instructions::adc_rm32_r32;
this->instructions[0x21] = &Instructions::and_rm32_r32;
this->instructions[0x23] = &Instructions::and_r32_rm32;
this->instructions[0x25] = &Instructions::and_eax_imm32;
@@ -331,6 +332,56 @@ void Instructions::or_eax_imm32(){
this->registers[0] |= imm32;
}
void Instructions::adc_rm32_r32(){
//printf("adc_rm32_r32 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:
// adc [M], R
// addr : M
this->eip++;
addr = this->registers[this->M];
// dst : data of [M]
dst = memory.read_uint32(addr);
memory.write_uint32(addr, dst + this->registers[this->R] + CF);
break;
case 1:
// adc [M+imm8], R
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);
memory.write_uint32(addr + imm8, dst + this->registers[this->R] + CF);
this->eip++;
break;
case 2:
// adc [M+imm32], R
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);
memory.write_uint32(addr, dst + this->registers[this->R] + CF);
this->eip += 4;
break;
default:
// case mod == 3
// adc M, R
this->eip++;
this->registers[this->M] += this->registers[this->R] + CF;
break;
}
}
void Instructions::and_rm32_r32(){
//printf("and_rm32_r32 called.\n");
uint32_t addr, dst, imm32;