diff options
| author | Raymaekers Luca <luca@spacehb.net> | 2025-10-24 12:58:52 +0200 |
|---|---|---|
| committer | Raymaekers Luca <luca@spacehb.net> | 2025-10-24 12:58:52 +0200 |
| commit | 856fd58549e5bf50e800a665f9deb27d967df2fb (patch) | |
| tree | 6950210e5ae3618b501a7045f10f8fc06dd903df /src/code/reference_decoder/sim86_instruction_table.inl | |
| parent | d8b3ca9d02377cf04a09e0f518a3385b7324bc4d (diff) | |
checkpoint
Diffstat (limited to 'src/code/reference_decoder/sim86_instruction_table.inl')
| -rw-r--r-- | src/code/reference_decoder/sim86_instruction_table.inl | 250 |
1 files changed, 0 insertions, 250 deletions
diff --git a/src/code/reference_decoder/sim86_instruction_table.inl b/src/code/reference_decoder/sim86_instruction_table.inl deleted file mode 100644 index 576c0f6..0000000 --- a/src/code/reference_decoder/sim86_instruction_table.inl +++ /dev/null @@ -1,250 +0,0 @@ -/* ======================================================================== - - (C) Copyright 2023 by Molly Rocket, Inc., All Rights Reserved. - - This software is provided 'as-is', without any express or implied - warranty. In no event will the authors be held liable for any damages - arising from the use of this software. - - Please see https://computerenhance.com for more information - - ======================================================================== */ - -/* - NOTE(casey): This instruction table is a direct translation of table 4-12 in the Intel 8086 manual. - The macros are designed to allow direct transcription, without changing the order or manner - of specification in the table in any way. Additional "implicit" versions of the macros are provided - so that hard-coded fields can be supplied uniformly. - - The table is also designed to allow you to include it multiple times to "pull out" other things - from the table, such as opcode mnemonics as strings or enums, etc. -*/ - -#ifndef INST -#define INST(Mnemonic, ...) {Op_##Mnemonic, __VA_ARGS__}, -#endif - -#ifndef INSTALT -#define INSTALT INST -#endif - -#define B(Bits) {Bits_Literal, sizeof(#Bits)-1, 0, 0b##Bits} -#define D {Bits_D, 1} -#define S {Bits_S, 1} -#define W {Bits_W, 1} -#define V {Bits_V, 1} -#define Z {Bits_Z, 1} - -#define XXX {Bits_Data, 3, 0} -#define YYY {Bits_Data, 3, 3} -#define RM {Bits_RM, 3} -#define MOD {Bits_MOD, 2} -#define REG {Bits_REG, 3} -#define SR {Bits_SR, 2} - -#define ImpW(Value) {Bits_W, 0, 0, Value} -#define ImpREG(Value) {Bits_REG, 0, 0, Value} -#define ImpMOD(Value) {Bits_MOD, 0, 0, Value} -#define ImpRM(Value) {Bits_RM, 0, 0, Value} -#define ImpD(Value) {Bits_D, 0, 0, Value} -#define ImpS(Value) {Bits_S, 0, 0, Value} - -#define DISP {Bits_Disp, 0, 0, 0} -#define ADDR {Bits_Disp, 0, 0, 0}, {Bits_DispAlwaysW, 0, 0, 1} -#define DATA {Bits_Data, 0, 0, 0} -#define DATA_IF_W {Bits_WMakesDataW, 0, 0, 1} -#define Flags(F) {F, 0, 0, 1} - -INST(mov, {B(100010), D, W, MOD, REG, RM}) -INSTALT(mov, {B(1100011), W, MOD, B(000), RM, DATA, DATA_IF_W, ImpD(0)}) -INSTALT(mov, {B(1011), W, REG, DATA, DATA_IF_W, ImpD(1)}) -INSTALT(mov, {B(1010000), W, ADDR, ImpREG(0), ImpMOD(0), ImpRM(0b110), ImpD(1)}) -INSTALT(mov, {B(1010001), W, ADDR, ImpREG(0), ImpMOD(0), ImpRM(0b110), ImpD(0)}) -INSTALT(mov, {B(100011), D, B(0), MOD, B(0), SR, RM, ImpW(1)}) // NOTE(casey): This collapses 2 entries in the 8086 table by adding an explicit D bit - -INST(push, {B(11111111), MOD, B(110), RM, ImpW(1), ImpD(1)}) -INSTALT(push, {B(01010), REG, ImpW(1), ImpD(1)}) -INSTALT(push, {B(000), SR, B(110), ImpW(1), ImpD(1)}) - -INST(pop, {B(10001111), MOD, B(000), RM, ImpW(1), ImpD(1)}) -INSTALT(pop, {B(01011), REG, ImpW(1), ImpD(1)}) -INSTALT(pop, {B(000), SR, B(111), ImpW(1), ImpD(1)}) - -INST(xchg, {B(1000011), W, MOD, REG, RM, ImpD(1)}) -INSTALT(xchg, {B(10010), REG, ImpMOD(0b11), ImpW(1), ImpRM(0)}) - -INST(in, {B(1110010), W, DATA, ImpREG(0), ImpD(1)}) -INSTALT(in, {B(1110110), W, ImpREG(0), ImpD(1), ImpMOD(0b11), ImpRM(2), Flags(Bits_RMRegAlwaysW)}) -INST(out, {B(1110011), W, DATA, ImpREG(0), ImpD(0)}) -INSTALT(out, {B(1110111), W, ImpREG(0), ImpD(0), ImpMOD(0b11), ImpRM(2), Flags(Bits_RMRegAlwaysW)}) - -INST(xlat, {B(11010111)}) -INST(lea, {B(10001101), MOD, REG, RM, ImpD(1), ImpW(1)}) -INST(lds, {B(11000101), MOD, REG, RM, ImpD(1), ImpW(1)}) -INST(les, {B(11000100), MOD, REG, RM, ImpD(1), ImpW(1)}) -INST(lahf, {B(10011111)}) -INST(sahf, {B(10011110)}) -INST(pushf, {B(10011100)}) -INST(popf, {B(10011101)}) - -INST(add, {B(000000), D, W, MOD, REG, RM}) -INSTALT(add, {B(100000), S, W, MOD, B(000), RM, DATA, DATA_IF_W}) -INSTALT(add, {B(0000010), W, DATA, DATA_IF_W, ImpREG(0), ImpD(1)}) - -INST(adc, {B(000100), D, W, MOD, REG, RM}) -INSTALT(adc, {B(100000), S, W, MOD, B(010), RM, DATA, DATA_IF_W}) -INSTALT(adc, {B(0001010), W, DATA, DATA_IF_W, ImpREG(0), ImpD(1)}) - -INST(inc, {B(1111111), W, MOD, B(000), RM, ImpD(1)}) -INSTALT(inc, {B(01000), REG, ImpW(1), ImpD(1)}) - -INST(aaa, {B(00110111)}) -INST(daa, {B(00100111)}) - -INST(sub, {B(001010), D, W, MOD, REG, RM}) -INSTALT(sub, {B(100000), S, W, MOD, B(101), RM, DATA, DATA_IF_W}) -INSTALT(sub, {B(0010110), W, DATA, DATA_IF_W, ImpREG(0), ImpD(1)}) - -INST(sbb, {B(000110), D, W, MOD, REG, RM}) -INSTALT(sbb, {B(100000), S, W, MOD, B(011), RM, DATA, DATA_IF_W}) -INSTALT(sbb, {B(0001110), W, DATA, DATA_IF_W, ImpREG(0), ImpD(1)}) - -INST(dec, {B(1111111), W, MOD, B(001), RM, ImpD(1)}) -INSTALT(dec, {B(01001), REG, ImpW(1), ImpD(1)}) - -INST(neg, {B(1111011), W, MOD, B(011), RM}) - -INST(cmp, {B(001110), D, W, MOD, REG, RM}) -INSTALT(cmp, {B(100000), S, W, MOD, B(111), RM, DATA, DATA_IF_W}) -INSTALT(cmp, {B(0011110), W, DATA, DATA_IF_W, ImpREG(0), ImpD(1)}) // NOTE(casey): The manual table suggests this data is only 8-bit, but wouldn't it be 16 as well? - -INST(aas, {B(00111111)}) -INST(das, {B(00101111)}) -INST(mul, {B(1111011), W, MOD, B(100), RM, ImpS(0)}) -INST(imul, {B(1111011), W, MOD, B(101), RM, ImpS(1)}) -INST(aam, {B(11010100), B(00001010)}) // NOTE(casey): The manual says this has a DISP... but how could it? What for?? -INST(div, {B(1111011), W, MOD, B(110), RM, ImpS(0)}) -INST(idiv, {B(1111011), W, MOD, B(111), RM, ImpS(1)}) -INST(aad, {B(11010101), B(00001010)}) -INST(cbw, {B(10011000)}) -INST(cwd, {B(10011001)}) - -INST(not, {B(1111011), W, MOD, B(010), RM}) -INST(shl, {B(110100), V, W, MOD, B(100), RM}) -INST(shr, {B(110100), V, W, MOD, B(101), RM}) -INST(sar, {B(110100), V, W, MOD, B(111), RM}) -INST(rol, {B(110100), V, W, MOD, B(000), RM}) -INST(ror, {B(110100), V, W, MOD, B(001), RM}) -INST(rcl, {B(110100), V, W, MOD, B(010), RM}) -INST(rcr, {B(110100), V, W, MOD, B(011), RM}) - -INST(and, {B(001000), D, W, MOD, REG, RM}) -INSTALT(and, {B(1000000), W, MOD, B(100), RM, DATA, DATA_IF_W}) -INSTALT(and, {B(0010010), W, DATA, DATA_IF_W, ImpREG(0), ImpD(1)}) - -INST(test, {B(1000010), W, MOD, REG, RM}) // NOTE(casey): The manual suggests there is a D flag here, but it doesn't appear to be true (it would conflict with xchg if it did) -INSTALT(test, {B(1111011), W, MOD, B(000), RM, DATA, DATA_IF_W}) -INSTALT(test, {B(1010100), W, DATA, DATA_IF_W, ImpREG(0), ImpD(1)}) // NOTE(casey): The manual table suggests this data is only 8-bit, but it seems like it could be 16 too? - -INST(or, {B(000010), D, W, MOD, REG, RM}) -INSTALT(or, {B(1000000), W, MOD, B(001), RM, DATA, DATA_IF_W}) -INSTALT(or, {B(0000110), W, DATA, DATA_IF_W, ImpREG(0), ImpD(1)}) - -INST(xor, {B(001100), D, W, MOD, REG, RM}) -INSTALT(xor, {B(1000000), W, MOD, B(110), RM, DATA, DATA_IF_W}) // NOTE(casey): The manual has conflicting information about this encoding, but I believe this is the correct binary pattern. -INSTALT(xor, {B(0011010), W, DATA, DATA_IF_W, ImpREG(0), ImpD(1)}) - -INST(rep, {B(1111001), Z}) -INST(movs, {B(1010010), W}) -INST(cmps, {B(1010011), W}) -INST(scas, {B(1010111), W}) -INST(lods, {B(1010110), W}) -INST(stos, {B(1010101), W}) - -INST(call, {B(11101000), ADDR, Flags(Bits_RelJMPDisp)}) -INSTALT(call, {B(11111111), MOD, B(010), RM, ImpW(1)}) -INSTALT(call, {B(10011010), ADDR, DATA, DATA_IF_W, ImpW(1), Flags(Bits_Far)}) -INSTALT(call, {B(11111111), MOD, B(011), RM, ImpW(1), Flags(Bits_Far)}) - -INST(jmp, {B(11101001), ADDR, Flags(Bits_RelJMPDisp)}) -INSTALT(jmp, {B(11101011), DISP, Flags(Bits_RelJMPDisp)}) -INSTALT(jmp, {B(11111111), MOD, B(100), RM, ImpW(1)}) -INSTALT(jmp, {B(11101010), ADDR, DATA, DATA_IF_W, ImpW(1), Flags(Bits_Far)}) -INSTALT(jmp, {B(11111111), MOD, B(101), RM, ImpW(1), Flags(Bits_Far)}) - -// NOTE(casey): The actual Intel manual does not distinguish mnemonics RET and RETF, -// but NASM needs this to reassemble properly, so we do. -INST(ret, {B(11000011)}) -INSTALT(ret, {B(11000010), DATA, DATA_IF_W, ImpW(1)}) -INST(retf, {B(11001011), Flags(Bits_Far)}) -INSTALT(retf, {B(11001010), DATA, DATA_IF_W, ImpW(1), Flags(Bits_Far)}) - -INST(je, {B(01110100), DISP, Flags(Bits_RelJMPDisp)}) -INST(jl, {B(01111100), DISP, Flags(Bits_RelJMPDisp)}) -INST(jle, {B(01111110), DISP, Flags(Bits_RelJMPDisp)}) -INST(jb, {B(01110010), DISP, Flags(Bits_RelJMPDisp)}) -INST(jbe, {B(01110110), DISP, Flags(Bits_RelJMPDisp)}) -INST(jp, {B(01111010), DISP, Flags(Bits_RelJMPDisp)}) -INST(jo, {B(01110000), DISP, Flags(Bits_RelJMPDisp)}) -INST(js, {B(01111000), DISP, Flags(Bits_RelJMPDisp)}) -INST(jne, {B(01110101), DISP, Flags(Bits_RelJMPDisp)}) -INST(jnl, {B(01111101), DISP, Flags(Bits_RelJMPDisp)}) -INST(jg, {B(01111111), DISP, Flags(Bits_RelJMPDisp)}) -INST(jnb, {B(01110011), DISP, Flags(Bits_RelJMPDisp)}) -INST(ja, {B(01110111), DISP, Flags(Bits_RelJMPDisp)}) -INST(jnp, {B(01111011), DISP, Flags(Bits_RelJMPDisp)}) -INST(jno, {B(01110001), DISP, Flags(Bits_RelJMPDisp)}) -INST(jns, {B(01111001), DISP, Flags(Bits_RelJMPDisp)}) -INST(loop, {B(11100010), DISP, Flags(Bits_RelJMPDisp)}) -INST(loopz, {B(11100001), DISP, Flags(Bits_RelJMPDisp)}) -INST(loopnz, {B(11100000), DISP, Flags(Bits_RelJMPDisp)}) -INST(jcxz, {B(11100011), DISP, Flags(Bits_RelJMPDisp)}) - -INST(int, {B(11001101), DATA}) -INST(int3, {B(11001100)}) // TODO(casey): The manual does not suggest that this intrinsic has an "int3" mnemonic, but NASM thinks so - -INST(into, {B(11001110)}) -INST(iret, {B(11001111)}) - -INST(clc, {B(11111000)}) -INST(cmc, {B(11110101)}) -INST(stc, {B(11111001)}) -INST(cld, {B(11111100)}) -INST(std, {B(11111101)}) -INST(cli, {B(11111010)}) -INST(sti, {B(11111011)}) -INST(hlt, {B(11110100)}) -INST(wait, {B(10011011)}) -INST(esc, {B(11011), XXX, MOD, YYY, RM}) -INST(lock, {B(11110000)}) -INST(segment, {B(001), SR, B(110)}) - -#undef INST -#undef INSTALT - -#undef B -#undef D -#undef S -#undef W -#undef V -#undef Z - -#undef XXX -#undef YYY -#undef RM -#undef MOD -#undef REG -#undef SR - -#undef ImpW -#undef ImpREG -#undef ImpMOD -#undef ImpRM -#undef ImpD -#undef ImpS - -#undef DISP -#undef ADDR -#undef DATA -#undef DATA_IF_W -#undef Flags |
