408 lines
11 KiB
C++
408 lines
11 KiB
C++
//: jump to 8-bit offset
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//:: jump
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:(before "End Initialize Op Names")
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put_new(Name, "eb", "jump disp8 bytes away (jmp)");
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:(code)
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void test_jump_disp8() {
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run(
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"== code 0x1\n"
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// op ModR/M SIB displacement immediate
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" eb 05 \n" // skip 1 instruction
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" 05 00 00 00 01 \n"
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" 05 00 00 00 02 \n"
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);
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CHECK_TRACE_CONTENTS(
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"run: 0x00000001 opcode: eb\n"
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"run: jump 5\n"
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"run: 0x00000008 opcode: 05\n"
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);
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CHECK_TRACE_DOESNT_CONTAIN("run: 0x00000003 opcode: 05");
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}
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:(before "End Single-Byte Opcodes")
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case 0xeb: { // jump disp8
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int8_t offset = static_cast<int>(next());
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trace(Callstack_depth+1, "run") << "jump " << NUM(offset) << end();
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EIP += offset;
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break;
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}
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//:: jump if equal/zero
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:(before "End Initialize Op Names")
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put_new(Name, "74", "jump disp8 bytes away if equal, if ZF is set (jcc/jz/je)");
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:(code)
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void test_je_disp8_success() {
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ZF = true;
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run(
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"== code 0x1\n"
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// op ModR/M SIB displacement immediate
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" 74 05 \n" // skip 1 instruction
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" 05 00 00 00 01 \n"
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" 05 00 00 00 02 \n"
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);
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CHECK_TRACE_CONTENTS(
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"run: 0x00000001 opcode: 74\n"
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"run: jump 5\n"
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"run: 0x00000008 opcode: 05\n"
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);
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CHECK_TRACE_DOESNT_CONTAIN("run: 0x00000003 opcode: 05");
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}
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:(before "End Single-Byte Opcodes")
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case 0x74: { // jump disp8 if ZF
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const int8_t offset = static_cast<int>(next());
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if (ZF) {
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trace(Callstack_depth+1, "run") << "jump " << NUM(offset) << end();
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EIP += offset;
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}
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break;
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}
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:(code)
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void test_je_disp8_fail() {
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ZF = false;
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run(
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"== code 0x1\n"
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// op ModR/M SIB displacement immediate
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" 74 05 \n" // skip 1 instruction
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" 05 00 00 00 01 \n"
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" 05 00 00 00 02 \n"
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);
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CHECK_TRACE_CONTENTS(
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"run: 0x00000001 opcode: 74\n"
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"run: 0x00000003 opcode: 05\n"
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"run: 0x00000008 opcode: 05\n"
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);
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CHECK_TRACE_DOESNT_CONTAIN("run: jump 5");
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}
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//:: jump if not equal/not zero
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:(before "End Initialize Op Names")
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put_new(Name, "75", "jump disp8 bytes away if not equal, if ZF is not set (jcc/jnz/jne)");
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:(code)
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void test_jne_disp8_success() {
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ZF = false;
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run(
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"== code 0x1\n"
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// op ModR/M SIB displacement immediate
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" 75 05 \n" // skip 1 instruction
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" 05 00 00 00 01 \n"
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" 05 00 00 00 02 \n"
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);
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CHECK_TRACE_CONTENTS(
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"run: 0x00000001 opcode: 75\n"
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"run: jump 5\n"
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"run: 0x00000008 opcode: 05\n"
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);
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CHECK_TRACE_DOESNT_CONTAIN("run: 0x00000003 opcode: 05");
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}
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:(before "End Single-Byte Opcodes")
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case 0x75: { // jump disp8 if !ZF
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const int8_t offset = static_cast<int>(next());
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if (!ZF) {
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trace(Callstack_depth+1, "run") << "jump " << NUM(offset) << end();
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EIP += offset;
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}
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break;
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}
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:(code)
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void test_jne_disp8_fail() {
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ZF = true;
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run(
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"== code 0x1\n"
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// op ModR/M SIB displacement immediate
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" 75 05 \n" // skip 1 instruction
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" 05 00 00 00 01 \n"
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" 05 00 00 00 02 \n"
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);
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CHECK_TRACE_CONTENTS(
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"run: 0x00000001 opcode: 75\n"
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"run: 0x00000003 opcode: 05\n"
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"run: 0x00000008 opcode: 05\n"
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);
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CHECK_TRACE_DOESNT_CONTAIN("run: jump 5");
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}
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//:: jump if greater
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:(before "End Initialize Op Names")
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put_new(Name, "7f", "jump disp8 bytes away if greater (signed), if ZF is unset and SF == OF (jcc/jg/jnle)");
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put_new(Name, "77", "jump disp8 bytes away if greater (unsigned), if ZF is unset and CF is unset (jcc/ja/jnbe)");
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:(code)
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void test_jg_disp8_success() {
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ZF = false;
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SF = false;
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OF = false;
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run(
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"== code 0x1\n"
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// op ModR/M SIB displacement immediate
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" 7f 05 \n" // skip 1 instruction
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" 05 00 00 00 01 \n"
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" 05 00 00 00 02 \n"
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);
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CHECK_TRACE_CONTENTS(
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"run: 0x00000001 opcode: 7f\n"
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"run: jump 5\n"
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"run: 0x00000008 opcode: 05\n"
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);
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CHECK_TRACE_DOESNT_CONTAIN("run: 0x00000003 opcode: 05");
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}
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:(before "End Single-Byte Opcodes")
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case 0x7f: { // jump disp8 if SF == OF and !ZF
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const int8_t offset = static_cast<int>(next());
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if (SF == OF && !ZF) {
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trace(Callstack_depth+1, "run") << "jump " << NUM(offset) << end();
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EIP += offset;
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}
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break;
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}
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case 0x77: { // jump disp8 if !CF and !ZF
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const int8_t offset = static_cast<int>(next());
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if (!CF && !ZF) {
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trace(Callstack_depth+1, "run") << "jump " << NUM(offset) << end();
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EIP += offset;
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}
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break;
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}
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:(code)
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void test_jg_disp8_fail() {
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ZF = false;
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SF = true;
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OF = false;
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run(
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"== code 0x1\n"
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// op ModR/M SIB displacement immediate
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" 7f 05 \n" // skip 1 instruction
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" 05 00 00 00 01 \n"
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" 05 00 00 00 02 \n"
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);
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CHECK_TRACE_CONTENTS(
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"run: 0x00000001 opcode: 7f\n"
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"run: 0x00000003 opcode: 05\n"
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"run: 0x00000008 opcode: 05\n"
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);
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CHECK_TRACE_DOESNT_CONTAIN("run: jump 5");
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}
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//:: jump if greater or equal
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:(before "End Initialize Op Names")
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put_new(Name, "7d", "jump disp8 bytes away if greater or equal (signed), if SF == OF (jcc/jge/jnl)");
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put_new(Name, "73", "jump disp8 bytes away if greater or equal (unsigned), if CF is unset (jcc/jae/jnb)");
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:(code)
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void test_jge_disp8_success() {
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SF = false;
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OF = false;
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run(
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"== code 0x1\n"
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// op ModR/M SIB displacement immediate
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" 7d 05 \n" // skip 1 instruction
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" 05 00 00 00 01 \n"
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" 05 00 00 00 02 \n"
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);
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CHECK_TRACE_CONTENTS(
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"run: 0x00000001 opcode: 7d\n"
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"run: jump 5\n"
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"run: 0x00000008 opcode: 05\n"
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);
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CHECK_TRACE_DOESNT_CONTAIN("run: 0x00000003 opcode: 05");
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}
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:(before "End Single-Byte Opcodes")
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case 0x7d: { // jump disp8 if SF == OF
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const int8_t offset = static_cast<int>(next());
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if (SF == OF) {
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trace(Callstack_depth+1, "run") << "jump " << NUM(offset) << end();
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EIP += offset;
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}
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break;
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}
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case 0x73: { // jump disp8 if !CF
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const int8_t offset = static_cast<int>(next());
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if (!CF) {
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trace(Callstack_depth+1, "run") << "jump " << NUM(offset) << end();
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EIP += offset;
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}
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break;
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}
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:(code)
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void test_jge_disp8_fail() {
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SF = true;
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OF = false;
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run(
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"== code 0x1\n"
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// op ModR/M SIB displacement immediate
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" 7d 05 \n" // skip 1 instruction
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" 05 00 00 00 01 \n"
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" 05 00 00 00 02 \n"
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);
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CHECK_TRACE_CONTENTS(
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"run: 0x00000001 opcode: 7d\n"
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"run: 0x00000003 opcode: 05\n"
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"run: 0x00000008 opcode: 05\n"
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);
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CHECK_TRACE_DOESNT_CONTAIN("run: jump 5");
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}
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//:: jump if lesser
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:(before "End Initialize Op Names")
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put_new(Name, "7c", "jump disp8 bytes away if lesser (signed), if SF != OF (jcc/jl/jnge)");
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put_new(Name, "72", "jump disp8 bytes away if lesser (unsigned), if CF is set (jcc/jb/jnae)");
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:(code)
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void test_jl_disp8_success() {
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ZF = false;
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SF = true;
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OF = false;
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run(
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"== code 0x1\n"
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// op ModR/M SIB displacement immediate
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" 7c 05 \n" // skip 1 instruction
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" 05 00 00 00 01 \n"
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" 05 00 00 00 02 \n"
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);
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CHECK_TRACE_CONTENTS(
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"run: 0x00000001 opcode: 7c\n"
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"run: jump 5\n"
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"run: 0x00000008 opcode: 05\n"
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);
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CHECK_TRACE_DOESNT_CONTAIN("run: 0x00000003 opcode: 05");
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}
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:(before "End Single-Byte Opcodes")
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case 0x7c: { // jump disp8 if SF != OF
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const int8_t offset = static_cast<int>(next());
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if (SF != OF) {
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trace(Callstack_depth+1, "run") << "jump " << NUM(offset) << end();
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EIP += offset;
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}
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break;
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}
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case 0x72: { // jump disp8 if CF
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const int8_t offset = static_cast<int>(next());
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if (CF) {
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trace(Callstack_depth+1, "run") << "jump " << NUM(offset) << end();
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EIP += offset;
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}
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break;
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}
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:(code)
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void test_jl_disp8_fail() {
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ZF = false;
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SF = false;
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OF = false;
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run(
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"== code 0x1\n"
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// op ModR/M SIB displacement immediate
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" 7c 05 \n" // skip 1 instruction
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" 05 00 00 00 01 \n"
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" 05 00 00 00 02 \n"
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);
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CHECK_TRACE_CONTENTS(
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"run: 0x00000001 opcode: 7c\n"
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"run: 0x00000003 opcode: 05\n"
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"run: 0x00000008 opcode: 05\n"
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);
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CHECK_TRACE_DOESNT_CONTAIN("run: jump 5");
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}
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//:: jump if lesser or equal
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:(before "End Initialize Op Names")
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put_new(Name, "7e", "jump disp8 bytes away if lesser or equal (signed), if ZF is set or SF != OF (jcc/jle/jng)");
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put_new(Name, "76", "jump disp8 bytes away if lesser or equal (unsigned), if ZF is set or CF is set (jcc/jbe/jna)");
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:(code)
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void test_jle_disp8_equal() {
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ZF = true;
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SF = false;
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OF = false;
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run(
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"== code 0x1\n"
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// op ModR/M SIB displacement immediate
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" 7e 05 \n" // skip 1 instruction
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" 05 00 00 00 01 \n"
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" 05 00 00 00 02 \n"
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);
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CHECK_TRACE_CONTENTS(
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"run: 0x00000001 opcode: 7e\n"
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"run: jump 5\n"
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"run: 0x00000008 opcode: 05\n"
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);
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CHECK_TRACE_DOESNT_CONTAIN("run: 0x00000003 opcode: 05");
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}
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:(code)
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void test_jle_disp8_lesser() {
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ZF = false;
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SF = true;
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OF = false;
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run(
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"== code 0x1\n"
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// op ModR/M SIB displacement immediate
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" 7e 05 \n" // skip 1 instruction
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" 05 00 00 00 01 \n"
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" 05 00 00 00 02 \n"
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);
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CHECK_TRACE_CONTENTS(
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"run: 0x00000001 opcode: 7e\n"
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"run: jump 5\n"
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"run: 0x00000008 opcode: 05\n"
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);
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CHECK_TRACE_DOESNT_CONTAIN("run: 0x00000003 opcode: 05");
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}
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:(before "End Single-Byte Opcodes")
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case 0x7e: { // jump disp8 if ZF or SF != OF
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const int8_t offset = static_cast<int>(next());
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if (ZF || SF != OF) {
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trace(Callstack_depth+1, "run") << "jump " << NUM(offset) << end();
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EIP += offset;
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}
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break;
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}
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case 0x76: { // jump disp8 if ZF or CF
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const int8_t offset = static_cast<int>(next());
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if (ZF || CF) {
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trace(Callstack_depth+1, "run") << "jump " << NUM(offset) << end();
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EIP += offset;
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}
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break;
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}
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:(code)
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void test_jle_disp8_greater() {
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ZF = false;
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SF = false;
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OF = false;
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run(
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"== code 0x1\n"
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// op ModR/M SIB displacement immediate
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" 7e 05 \n" // skip 1 instruction
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" 05 00 00 00 01 \n"
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" 05 00 00 00 02 \n"
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);
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CHECK_TRACE_CONTENTS(
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"run: 0x00000001 opcode: 7e\n"
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"run: 0x00000003 opcode: 05\n"
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"run: 0x00000008 opcode: 05\n"
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);
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CHECK_TRACE_DOESNT_CONTAIN("run: jump 5");
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}
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