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Add jne_imm8(0x75) instruction

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tuz358
2018-03-05 11:50:25 +09:00
parent 4b84c23d92
commit 23831ad03b
2 changed files with 12 additions and 0 deletions
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1
include/instructions.h
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@@ -30,6 +30,7 @@ public:
void add_rm32_r32(); // 0x01 void add_rm32_r32(); // 0x01
void xor_rm32_r32(); // 0x31 void xor_rm32_r32(); // 0x31
void dec_ecx(); // 0x49 void dec_ecx(); // 0x49
void jne_imm8(); // 0x75
void opcode_83(); // 0x83 void opcode_83(); // 0x83
void mov_rm32_r32(); // 0x89 void mov_rm32_r32(); // 0x89
void nop(); // 0x90 void nop(); // 0x90

11
instructions.cpp
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@@ -23,6 +23,7 @@ void Instructions::init_instructions(){
this->instructions[0x01] = &Instructions::add_rm32_r32; this->instructions[0x01] = &Instructions::add_rm32_r32;
this->instructions[0x31] = &Instructions::xor_rm32_r32; this->instructions[0x31] = &Instructions::xor_rm32_r32;
this->instructions[0x49] = &Instructions::dec_ecx; this->instructions[0x49] = &Instructions::dec_ecx;
this->instructions[0x75] = &Instructions::jne_imm8;
this->instructions[0x83] = &Instructions::opcode_83; this->instructions[0x83] = &Instructions::opcode_83;
this->instructions[0x89] = &Instructions::mov_rm32_r32; this->instructions[0x89] = &Instructions::mov_rm32_r32;
this->instructions[0x90] = &Instructions::nop; this->instructions[0x90] = &Instructions::nop;
@@ -154,6 +155,16 @@ void Instructions::dec_ecx(){
this->registers[1]--; this->registers[1]--;
} }
void Instructions::jne_imm8(){
printf("jne_imm8 called.\n");
this->eip++;
imm8 = memory.read_uint8(this->eip);
int zero_flag = this->get_flag(ZF);
if (!zero_flag) this->eip += imm8;
}
void Instructions::opcode_83(){ void Instructions::opcode_83(){
printf("opcode_83 called.\n"); printf("opcode_83 called.\n");