diff options
Diffstat (limited to 'subx/opcodes')
| -rw-r--r-- | subx/opcodes | 106 |
1 files changed, 0 insertions, 106 deletions
diff --git a/subx/opcodes b/subx/opcodes deleted file mode 100644 index bebf3052..00000000 --- a/subx/opcodes +++ /dev/null @@ -1,106 +0,0 @@ -Opcodes currently supported by SubX: - 01: add r32 to rm32 (add) - 03: add rm32 to r32 (add) - 05: add imm32 to EAX (add) - 09: rm32 = bitwise OR of r32 with rm32 (or) - 0b: r32 = bitwise OR of r32 with rm32 (or) - 0d: EAX = bitwise OR of imm32 with EAX (or) - 21: rm32 = bitwise AND of r32 with rm32 (and) - 23: r32 = bitwise AND of r32 with rm32 (and) - 25: EAX = bitwise AND of imm32 with EAX (and) - 29: subtract r32 from rm32 (sub) - 2b: subtract rm32 from r32 (sub) - 2d: subtract imm32 from EAX (sub) - 31: rm32 = bitwise XOR of r32 with rm32 (xor) - 33: r32 = bitwise XOR of r32 with rm32 (xor) - 35: EAX = bitwise XOR of imm32 with EAX (xor) - 39: compare: set SF if rm32 < r32 (cmp) - 3b: compare: set SF if r32 < rm32 (cmp) - 3d: compare: set SF if EAX < imm32 (cmp) - 40: increment EAX (inc) - 41: increment ECX (inc) - 42: increment EDX (inc) - 43: increment EBX (inc) - 44: increment ESP (inc) - 45: increment EBP (inc) - 46: increment ESI (inc) - 47: increment EDI (inc) - 48: decrement EAX (dec) - 49: decrement ECX (dec) - 4a: decrement EDX (dec) - 4b: decrement EBX (dec) - 4c: decrement ESP (dec) - 4d: decrement EBP (dec) - 4e: decrement ESI (dec) - 4f: decrement EDI (dec) - 50: push EAX to stack (push) - 51: push ECX to stack (push) - 52: push EDX to stack (push) - 53: push EBX to stack (push) - 54: push ESP to stack (push) - 55: push EBP to stack (push) - 56: push ESI to stack (push) - 57: push EDI to stack (push) - 58: pop top of stack to EAX (pop) - 59: pop top of stack to ECX (pop) - 5a: pop top of stack to EDX (pop) - 5b: pop top of stack to EBX (pop) - 5c: pop top of stack to ESP (pop) - 5d: pop top of stack to EBP (pop) - 5e: pop top of stack to ESI (pop) - 5f: pop top of stack to EDI (pop) - 68: push imm32 to stack (push) - 72: jump disp8 bytes away if lesser (unsigned), if CF is set (jcc/jb/jnae) - 73: jump disp8 bytes away if greater or equal (unsigned), if CF is unset (jcc/jae/jnb) - 74: jump disp8 bytes away if equal, if ZF is set (jcc/jz/je) - 75: jump disp8 bytes away if not equal, if ZF is not set (jcc/jnz/jne) - 76: jump disp8 bytes away if lesser or equal (unsigned), if ZF is set or CF is set (jcc/jbe/jna) - 77: jump disp8 bytes away if greater (unsigned), if ZF is unset and CF is unset (jcc/ja/jnbe) - 7c: jump disp8 bytes away if lesser (signed), if SF != OF (jcc/jl/jnge) - 7d: jump disp8 bytes away if greater or equal (signed), if SF == OF (jcc/jge/jnl) - 7e: jump disp8 bytes away if lesser or equal (signed), if ZF is set or SF != OF (jcc/jle/jng) - 7f: jump disp8 bytes away if greater (signed), if ZF is unset and SF == OF (jcc/jg/jnle) - 81: combine rm32 with imm32 based on subop (add/sub/and/or/xor/cmp) - 87: swap the contents of r32 and rm32 (xchg) - 88: copy r8 to r8/m8-at-r32 - 89: copy r32 to rm32 (mov) - 8a: copy r8/m8-at-r32 to r8 - 8b: copy rm32 to r32 (mov) - 8d: copy address in rm32 into r32 (lea) - 8f: pop top of stack to rm32 (pop) - 99: sign-extend EAX into EDX (cdq) - b8: copy imm32 to EAX (mov) - b9: copy imm32 to ECX (mov) - ba: copy imm32 to EDX (mov) - bb: copy imm32 to EBX (mov) - bc: copy imm32 to ESP (mov) - bd: copy imm32 to EBP (mov) - be: copy imm32 to ESI (mov) - bf: copy imm32 to EDI (mov) - c1: shift rm32 by imm8 bits depending on subop (sal/sar/shl/shr) - c3: return from most recent unfinished call (ret) - c6: copy imm8 to r8/m8-at-r32 (mov) - c7: copy imm32 to rm32 (mov) - cd: software interrupt (int) - d3: shift rm32 by CL bits depending on subop (sal/sar/shl/shr) - e8: call disp32 (call) - e9: jump disp32 bytes away (jmp) - eb: jump disp8 bytes away (jmp) - f4: halt (hlt) - f7: negate/multiply/divide rm32 (with EAX and EDX if necessary) depending on subop (neg/mul/idiv) - ff: increment/decrement/jump/push/call rm32 based on subop (inc/dec/jmp/push/call) - 0f 82: jump disp32 bytes away if lesser (unsigned), if CF is set (jcc/jb/jnae) - 0f 83: jump disp32 bytes away if greater or equal (unsigned), if CF is unset (jcc/jae/jnb) - 0f 84: jump disp32 bytes away if equal, if ZF is set (jcc/jz/je) - 0f 85: jump disp32 bytes away if not equal, if ZF is not set (jcc/jnz/jne) - 0f 86: jump disp8 bytes away if lesser or equal (unsigned), if ZF is set or CF is set (jcc/jbe/jna) - 0f 87: jump disp32 bytes away if greater (unsigned), if ZF is unset and CF is unset (jcc/ja/jnbe) - 0f 8c: jump disp32 bytes away if lesser (signed), if SF != OF (jcc/jl/jnge) - 0f 8d: jump disp32 bytes away if greater or equal (signed), if SF == OF (jcc/jge/jnl) - 0f 8e: jump disp32 bytes away if lesser or equal (signed), if ZF is set or SF != OF (jcc/jle/jng) - 0f 8f: jump disp32 bytes away if greater (signed), if ZF is unset and SF == OF (jcc/jg/jnle) - 0f af: multiply rm32 into r32 (imul) -Run `subx help instructions` for details on words like 'r32' and 'disp8'. -For complete details on these instructions, consult the IA-32 manual (volume 2). -There's various versions of it online, such as https://c9x.me/x86. -The mnemonics in brackets will help you locate each instruction. |