ref: 86bfd0331d842c7210a3a4758b71231b18193b5b
dir: /sys/src/games/gb/disasm.c/
#include <u.h>
#include <libc.h>
#include <thread.h>
#include <draw.h>
#include "dat.h"
#include "fns.h"
static char *opcodes[256] = {
[0x00] "NOP",
[0x01] "LD BC,%.4x",
[0x02] "LD (BC),A",
[0x03] "INC BC",
[0x04] "INC B",
[0x05] "DEC B",
[0x06] "LD B,%.2x",
[0x07] "RLCA ",
[0x08] "LD (%.4x),SP",
[0x09] "ADD HL,BC",
[0x0A] "LD A,(BC)",
[0x0B] "DEC BC",
[0x0C] "INC C",
[0x0D] "DEC C",
[0x0E] "LD C,%.2x",
[0x0F] "RRCA ",
[0x10] "STOP",
[0x11] "LD DE,%.4x",
[0x12] "LD (DE),A",
[0x13] "INC DE",
[0x14] "INC D",
[0x15] "DEC D",
[0x16] "LD D,%.2x",
[0x17] "RLA ",
[0x18] "JR %.2x",
[0x19] "ADD HL,DE",
[0x1A] "LD A,(DE)",
[0x1B] "DEC DE",
[0x1C] "INC E",
[0x1D] "DEC E",
[0x1E] "LD E,%.2x",
[0x1F] "RRA ",
[0x20] "JR NZ,%.2x",
[0x21] "LD HL,%.4x",
[0x22] "LD (HLI),A",
[0x23] "INC HL",
[0x24] "INC H",
[0x25] "DEC H",
[0x26] "LD H,%.2x",
[0x27] "DAA ",
[0x28] "JR Z,%.2x",
[0x29] "ADD HL,HL",
[0x2A] "LD A,(HLI)",
[0x2B] "DEC HL",
[0x2C] "INC L",
[0x2D] "DEC L",
[0x2E] "LD L,%.2x",
[0x2F] "CPL ",
[0x30] "JR NC,%.2x",
[0x31] "LD SP,%.4x",
[0x32] "LD (HLD),A",
[0x33] "INC SP",
[0x34] "INC (HL)",
[0x35] "DEC (HL)",
[0x36] "LD (HL),%.2x",
[0x37] "SCF ",
[0x38] "JR C,%.2x",
[0x39] "ADD HL,SP",
[0x3A] "LD A,(HLD)",
[0x3B] "DEC SP",
[0x3C] "INC A",
[0x3D] "DEC A",
[0x3E] "LD A,%.2x",
[0x3F] "CCF ",
[0x40] "LD B,B",
[0x41] "LD B,C",
[0x42] "LD B,D",
[0x43] "LD B,E",
[0x44] "LD B,H",
[0x45] "LD B,L",
[0x46] "LD B,(HL)",
[0x47] "LD B,A",
[0x48] "LD C,B",
[0x49] "LD C,C",
[0x4A] "LD C,D",
[0x4B] "LD C,E",
[0x4C] "LD C,H",
[0x4D] "LD C,L",
[0x4E] "LD C,(HL)",
[0x4F] "LD C,A",
[0x50] "LD D,B",
[0x51] "LD D,C",
[0x52] "LD D,D",
[0x53] "LD D,E",
[0x54] "LD D,H",
[0x55] "LD D,L",
[0x56] "LD D,(HL)",
[0x57] "LD D,A",
[0x58] "LD E,B",
[0x59] "LD E,C",
[0x5A] "LD E,D",
[0x5B] "LD E,E",
[0x5C] "LD E,H",
[0x5D] "LD E,L",
[0x5E] "LD E,(HL)",
[0x5F] "LD E,A",
[0x60] "LD H,B",
[0x61] "LD H,C",
[0x62] "LD H,D",
[0x63] "LD H,E",
[0x64] "LD H,H",
[0x65] "LD H,L",
[0x66] "LD H,(HL)",
[0x67] "LD H,A",
[0x68] "LD L,B",
[0x69] "LD L,C",
[0x6A] "LD L,D",
[0x6B] "LD L,E",
[0x6C] "LD L,H",
[0x6D] "LD L,L",
[0x6E] "LD L,(HL)",
[0x6F] "LD L,A",
[0x70] "LD (HL),B",
[0x71] "LD (HL),C",
[0x72] "LD (HL),D",
[0x73] "LD (HL),E",
[0x74] "LD (HL),H",
[0x75] "LD (HL),L",
[0x76] "HALT ",
[0x77] "LD (HL),A",
[0x78] "LD A,B",
[0x79] "LD A,C",
[0x7A] "LD A,D",
[0x7B] "LD A,E",
[0x7C] "LD A,H",
[0x7D] "LD A,L",
[0x7E] "LD A,(HL)",
[0x7F] "LD A,A",
[0x80] "ADD A,B",
[0x81] "ADD A,C",
[0x82] "ADD A,D",
[0x83] "ADD A,E",
[0x84] "ADD A,H",
[0x85] "ADD A,L",
[0x86] "ADD A,(HL)",
[0x87] "ADD A,A",
[0x88] "ADC A,B",
[0x89] "ADC A,C",
[0x8A] "ADC A,D",
[0x8B] "ADC A,E",
[0x8C] "ADC A,H",
[0x8D] "ADC A,L",
[0x8E] "ADC A,(HL)",
[0x8F] "ADC A,A",
[0x90] "SUB B",
[0x91] "SUB C",
[0x92] "SUB D",
[0x93] "SUB E",
[0x94] "SUB H",
[0x95] "SUB L",
[0x96] "SUB (HL)",
[0x97] "SUB A",
[0x98] "SBC B",
[0x99] "SBC C",
[0x9A] "SBC D",
[0x9B] "SBC E",
[0x9C] "SBC H",
[0x9D] "SBC L",
[0x9E] "SBC (HL)",
[0x9F] "SBC A",
[0xA0] "AND B",
[0xA1] "AND C",
[0xA2] "AND D",
[0xA3] "AND E",
[0xA4] "AND H",
[0xA5] "AND L",
[0xA6] "AND (HL)",
[0xA7] "AND A",
[0xA8] "XOR B",
[0xA9] "XOR C",
[0xAA] "XOR D",
[0xAB] "XOR E",
[0xAC] "XOR H",
[0xAD] "XOR L",
[0xAE] "XOR (HL)",
[0xAF] "XOR A",
[0xB0] "OR B",
[0xB1] "OR C",
[0xB2] "OR D",
[0xB3] "OR E",
[0xB4] "OR H",
[0xB5] "OR L",
[0xB6] "OR (HL)",
[0xB7] "OR A",
[0xB8] "CP B",
[0xB9] "CP C",
[0xBA] "CP D",
[0xBB] "CP E",
[0xBC] "CP H",
[0xBD] "CP L",
[0xBE] "CP (HL)",
[0xBF] "CP A",
[0xC0] "RET NZ",
[0xC1] "POP BC",
[0xC2] "JP NZ,%.4x",
[0xC3] "JP %.4x",
[0xC4] "CALL NZ,%.4x",
[0xC5] "PUSH BC",
[0xC6] "ADD A,%.2x",
[0xC7] "RST 00H",
[0xC8] "RET Z",
[0xC9] "RET ",
[0xCA] "JP Z,%.4x",
[0xCB] "#CB ",
[0xCC] "CALL Z,%.4x",
[0xCD] "CALL %.4x",
[0xCE] "ADC A,%.2x",
[0xCF] "RST 08H",
[0xD0] "RET NC",
[0xD1] "POP DE",
[0xD2] "JP NC,%.4x",
[0xD3] "---",
[0xD4] "CALL NC,%.4x",
[0xD5] "PUSH DE",
[0xD6] "SUB %.2x",
[0xD7] "RST 10H",
[0xD8] "RET C",
[0xD9] "RETI",
[0xDA] "JP C,%.4x",
[0xDB] "---",
[0xDC] "CALL C,%.4x",
[0xDD] "---",
[0xDE] "SBC A,%.2x",
[0xDF] "RST 18H",
[0xE0] "LD (ff%.2x),A",
[0xE1] "POP HL",
[0xE2] "LD (C),A",
[0xE3] "---",
[0xE4] "---",
[0xE5] "PUSH HL",
[0xE6] "AND %.2x",
[0xE7] "RST 20H",
[0xE8] "ADD SP,%.2x",
[0xE9] "JP (HL)",
[0xEA] "LD (%.4x),A",
[0xEB] "---",
[0xEC] "---",
[0xED] "#ED ",
[0xEE] "XOR %.2x",
[0xEF] "RST 28H",
[0xF0] "LD A,(ff%.2x)",
[0xF1] "POP AF",
[0xF2] "LD A, (C)",
[0xF3] "DI ",
[0xF4] "---",
[0xF5] "PUSH AF",
[0xF6] "OR %.2x",
[0xF7] "RST 30H",
[0xF8] "LDHL SP,%.2x",
[0xF9] "LD SP,HL",
[0xFA] "LD A,(%.4x)",
[0xFB] "EI ",
[0xFC] "---",
[0xFD] "---",
[0xFE] "CP %.2x",
[0xFF] "RST 38H",
};
static int operands[256] = {
[0x00] 0,
[0x01] 2,
[0x02] 0,
[0x03] 0,
[0x04] 0,
[0x05] 0,
[0x06] 1,
[0x07] 0,
[0x08] 0,
[0x09] 0,
[0x0A] 0,
[0x0B] 0,
[0x0C] 0,
[0x0D] 0,
[0x0E] 1,
[0x0F] 0,
[0x10] 0,
[0x11] 2,
[0x12] 0,
[0x13] 0,
[0x14] 0,
[0x15] 0,
[0x16] 1,
[0x17] 0,
[0x18] 1,
[0x19] 0,
[0x1A] 0,
[0x1B] 0,
[0x1C] 0,
[0x1D] 0,
[0x1E] 1,
[0x1F] 0,
[0x20] 1,
[0x21] 2,
[0x22] 0,
[0x23] 0,
[0x24] 0,
[0x25] 0,
[0x26] 1,
[0x27] 0,
[0x28] 1,
[0x29] 0,
[0x2A] 0,
[0x2B] 0,
[0x2C] 0,
[0x2D] 0,
[0x2E] 1,
[0x2F] 0,
[0x30] 1,
[0x31] 2,
[0x32] 0,
[0x33] 0,
[0x34] 0,
[0x35] 0,
[0x36] 1,
[0x37] 0,
[0x38] 1,
[0x39] 0,
[0x3A] 2,
[0x3B] 0,
[0x3C] 0,
[0x3D] 0,
[0x3E] 1,
[0x3F] 0,
[0x40] 0,
[0x41] 0,
[0x42] 0,
[0x43] 0,
[0x44] 0,
[0x45] 0,
[0x46] 0,
[0x47] 0,
[0x48] 0,
[0x49] 0,
[0x4A] 0,
[0x4B] 0,
[0x4C] 0,
[0x4D] 0,
[0x4E] 0,
[0x4F] 0,
[0x50] 0,
[0x51] 0,
[0x52] 0,
[0x53] 0,
[0x54] 0,
[0x55] 0,
[0x56] 0,
[0x57] 0,
[0x58] 0,
[0x59] 0,
[0x5A] 0,
[0x5B] 0,
[0x5C] 0,
[0x5D] 0,
[0x5E] 0,
[0x5F] 0,
[0x60] 0,
[0x61] 0,
[0x62] 0,
[0x63] 0,
[0x64] 0,
[0x65] 0,
[0x66] 0,
[0x67] 0,
[0x68] 0,
[0x69] 0,
[0x6A] 0,
[0x6B] 0,
[0x6C] 0,
[0x6D] 0,
[0x6E] 0,
[0x6F] 0,
[0x70] 0,
[0x71] 0,
[0x72] 0,
[0x73] 0,
[0x74] 0,
[0x75] 0,
[0x76] 0,
[0x77] 0,
[0x78] 0,
[0x79] 0,
[0x7A] 0,
[0x7B] 0,
[0x7C] 0,
[0x7D] 0,
[0x7E] 0,
[0x7F] 0,
[0x80] 0,
[0x81] 0,
[0x82] 0,
[0x83] 0,
[0x84] 0,
[0x85] 0,
[0x86] 0,
[0x87] 0,
[0x88] 0,
[0x89] 0,
[0x8A] 0,
[0x8B] 0,
[0x8C] 0,
[0x8D] 0,
[0x8E] 0,
[0x8F] 0,
[0x90] 0,
[0x91] 0,
[0x92] 0,
[0x93] 0,
[0x94] 0,
[0x95] 0,
[0x96] 0,
[0x97] 0,
[0x98] 0,
[0x99] 0,
[0x9A] 0,
[0x9B] 0,
[0x9C] 0,
[0x9D] 0,
[0x9E] 0,
[0x9F] 0,
[0xA0] 0,
[0xA1] 0,
[0xA2] 0,
[0xA3] 0,
[0xA4] 0,
[0xA5] 0,
[0xA6] 0,
[0xA7] 0,
[0xA8] 0,
[0xA9] 0,
[0xAA] 0,
[0xAB] 0,
[0xAC] 0,
[0xAD] 0,
[0xAE] 0,
[0xAF] 0,
[0xB0] 0,
[0xB1] 0,
[0xB2] 0,
[0xB3] 0,
[0xB4] 0,
[0xB5] 0,
[0xB6] 0,
[0xB7] 0,
[0xB8] 0,
[0xB9] 0,
[0xBA] 0,
[0xBB] 0,
[0xBC] 0,
[0xBD] 0,
[0xBE] 0,
[0xBF] 0,
[0xC0] 0,
[0xC1] 0,
[0xC2] 2,
[0xC3] 2,
[0xC4] 2,
[0xC5] 0,
[0xC6] 1,
[0xC7] 0,
[0xC8] 0,
[0xC9] 0,
[0xCA] 2,
[0xCB] 0,
[0xCC] 2,
[0xCD] 2,
[0xCE] 1,
[0xCF] 0,
[0xD0] 0,
[0xD1] 0,
[0xD2] 2,
[0xD3] 1,
[0xD4] 2,
[0xD5] 0,
[0xD6] 1,
[0xD7] 0,
[0xD8] 0,
[0xD9] 0,
[0xDA] 2,
[0xDB] 1,
[0xDC] 2,
[0xDD] 0,
[0xDE] 1,
[0xDF] 0,
[0xE0] 1,
[0xE1] 0,
[0xE2] 0,
[0xE3] 0,
[0xE4] 2,
[0xE5] 0,
[0xE6] 1,
[0xE7] 0,
[0xE8] 1,
[0xE9] 0,
[0xEA] 2,
[0xEB] 0,
[0xEC] 2,
[0xED] 0,
[0xEE] 1,
[0xEF] 0,
[0xF0] 1,
[0xF1] 0,
[0xF2] 0,
[0xF3] 0,
[0xF4] 2,
[0xF5] 0,
[0xF6] 1,
[0xF7] 0,
[0xF8] 1,
[0xF9] 0,
[0xFA] 2,
[0xFB] 0,
[0xFC] 2,
[0xFD] 0,
[0xFE] 1,
[0xFF] 0,
};
static char *cbopcodes[256] = {
[0x00] "RLC B",
[0x01] "RLC C",
[0x02] "RLC D",
[0x03] "RLC E",
[0x04] "RLC H",
[0x05] "RLC L",
[0x06] "RLC (HL)",
[0x07] "RLC A",
[0x08] "RRC B",
[0x09] "RRC C",
[0x0A] "RRC D",
[0x0B] "RRC E",
[0x0C] "RRC H",
[0x0D] "RRC L",
[0x0E] "RRC (HL)",
[0x0F] "RRC A",
[0x10] "RL B",
[0x11] "RL C",
[0x12] "RL D",
[0x13] "RL E",
[0x14] "RL H",
[0x15] "RL L",
[0x16] "RL (HL)",
[0x17] "RL A",
[0x18] "RR B",
[0x19] "RR C",
[0x1A] "RR D",
[0x1B] "RR E",
[0x1C] "RR H",
[0x1D] "RR L",
[0x1E] "RR (HL)",
[0x1F] "RR A",
[0x20] "SLA B",
[0x21] "SLA C",
[0x22] "SLA D",
[0x23] "SLA E",
[0x24] "SLA H",
[0x25] "SLA L",
[0x26] "SLA (HL)",
[0x27] "SLA A",
[0x28] "SRA B",
[0x29] "SRA C",
[0x2A] "SRA D",
[0x2B] "SRA E",
[0x2C] "SRA H",
[0x2D] "SRA L",
[0x2E] "SRA (HL)",
[0x2F] "SRA A",
[0x30] "SWAP B",
[0x31] "SWAP C",
[0x32] "SWAP D",
[0x33] "SWAP E",
[0x34] "SWAP H",
[0x35] "SWAP L",
[0x36] "SWAP (HL)",
[0x37] "SWAP A",
[0x38] "SRL B",
[0x39] "SRL C",
[0x3A] "SRL D",
[0x3B] "SRL E",
[0x3C] "SRL H",
[0x3D] "SRL L",
[0x3E] "SRL (HL)",
[0x3F] "SRL A",
[0x40] "BIT 0,B",
[0x41] "BIT 0,C",
[0x42] "BIT 0,D",
[0x43] "BIT 0,E",
[0x44] "BIT 0,H",
[0x45] "BIT 0,L",
[0x46] "BIT 0,(HL)",
[0x47] "BIT 0,A",
[0x48] "BIT 1,B",
[0x49] "BIT 1,C",
[0x4A] "BIT 1,D",
[0x4B] "BIT 1,E",
[0x4C] "BIT 1,H",
[0x4D] "BIT 1,L",
[0x4E] "BIT 1,(HL)",
[0x4F] "BIT 1,A",
[0x50] "BIT 2,B",
[0x51] "BIT 2,C",
[0x52] "BIT 2,D",
[0x53] "BIT 2,E",
[0x54] "BIT 2,H",
[0x55] "BIT 2,L",
[0x56] "BIT 2,(HL)",
[0x57] "BIT 2,A",
[0x58] "BIT 3,B",
[0x59] "BIT 3,C",
[0x5A] "BIT 3,D",
[0x5B] "BIT 3,E",
[0x5C] "BIT 3,H",
[0x5D] "BIT 3,L",
[0x5E] "BIT 3,(HL)",
[0x5F] "BIT 3,A",
[0x60] "BIT 4,B",
[0x61] "BIT 4,C",
[0x62] "BIT 4,D",
[0x63] "BIT 4,E",
[0x64] "BIT 4,H",
[0x65] "BIT 4,L",
[0x66] "BIT 4,(HL)",
[0x67] "BIT 4,A",
[0x68] "BIT 5,B",
[0x69] "BIT 5,C",
[0x6A] "BIT 5,D",
[0x6B] "BIT 5,E",
[0x6C] "BIT 5,H",
[0x6D] "BIT 5,L",
[0x6E] "BIT 5,(HL)",
[0x6F] "BIT 5,A",
[0x70] "BIT 6,B",
[0x71] "BIT 6,C",
[0x72] "BIT 6,D",
[0x73] "BIT 6,E",
[0x74] "BIT 6,H",
[0x75] "BIT 6,L",
[0x76] "BIT 6,(HL)",
[0x77] "BIT 6,A",
[0x78] "BIT 7,B",
[0x79] "BIT 7,C",
[0x7A] "BIT 7,D",
[0x7B] "BIT 7,E",
[0x7C] "BIT 7,H",
[0x7D] "BIT 7,L",
[0x7E] "BIT 7,(HL)",
[0x7F] "BIT 7,A",
[0x80] "RES 0,B",
[0x81] "RES 0,C",
[0x82] "RES 0,D",
[0x83] "RES 0,E",
[0x84] "RES 0,H",
[0x85] "RES 0,L",
[0x86] "RES 0,(HL)",
[0x87] "RES 0,A",
[0x88] "RES 1,B",
[0x89] "RES 1,C",
[0x8A] "RES 1,D",
[0x8B] "RES 1,E",
[0x8C] "RES 1,H",
[0x8D] "RES 1,L",
[0x8E] "RES 1,(HL)",
[0x8F] "RES 1,A",
[0x90] "RES 2,B",
[0x91] "RES 2,C",
[0x92] "RES 2,D",
[0x93] "RES 2,E",
[0x94] "RES 2,H",
[0x95] "RES 2,L",
[0x96] "RES 2,(HL)",
[0x97] "RES 2,A",
[0x98] "RES 3,B",
[0x99] "RES 3,C",
[0x9A] "RES 3,D",
[0x9B] "RES 3,E",
[0x9C] "RES 3,H",
[0x9D] "RES 3,L",
[0x9E] "RES 3,(HL)",
[0x9F] "RES 3,A",
[0xA0] "RES 4,B",
[0xA1] "RES 4,C",
[0xA2] "RES 4,D",
[0xA3] "RES 4,E",
[0xA4] "RES 4,H",
[0xA5] "RES 4,L",
[0xA6] "RES 4,(HL)",
[0xA7] "RES 4,A",
[0xA8] "RES 5,B",
[0xA9] "RES 5,C",
[0xAA] "RES 5,D",
[0xAB] "RES 5,E",
[0xAC] "RES 5,H",
[0xAD] "RES 5,L",
[0xAE] "RES 5,(HL)",
[0xAF] "RES 5,A",
[0xB0] "RES 6,B",
[0xB1] "RES 6,C",
[0xB2] "RES 6,D",
[0xB3] "RES 6,E",
[0xB4] "RES 6,H",
[0xB5] "RES 6,L",
[0xB6] "RES 6,(HL)",
[0xB7] "RES 6,A",
[0xB8] "RES 7,B",
[0xB9] "RES 7,C",
[0xBA] "RES 7,D",
[0xBB] "RES 7,E",
[0xBC] "RES 7,H",
[0xBD] "RES 7,L",
[0xBE] "RES 7,(HL)",
[0xBF] "RES 7,A",
[0xC0] "SET 0,B",
[0xC1] "SET 0,C",
[0xC2] "SET 0,D",
[0xC3] "SET 0,E",
[0xC4] "SET 0,H",
[0xC5] "SET 0,L",
[0xC6] "SET 0,(HL)",
[0xC7] "SET 0,A",
[0xC8] "SET 1,B",
[0xC9] "SET 1,C",
[0xCA] "SET 1,D",
[0xCB] "SET 1,E",
[0xCC] "SET 1,H",
[0xCD] "SET 1,L",
[0xCE] "SET 1,(HL)",
[0xCF] "SET 1,A",
[0xD0] "SET 2,B",
[0xD1] "SET 2,C",
[0xD2] "SET 2,D",
[0xD3] "SET 2,E",
[0xD4] "SET 2,H",
[0xD5] "SET 2,L",
[0xD6] "SET 2,(HL)",
[0xD7] "SET 2,A",
[0xD8] "SET 3,B",
[0xD9] "SET 3,C",
[0xDA] "SET 3,D",
[0xDB] "SET 3,E",
[0xDC] "SET 3,H",
[0xDD] "SET 3,L",
[0xDE] "SET 3,(HL)",
[0xDF] "SET 3,A",
[0xE0] "SET 4,B",
[0xE1] "SET 4,C",
[0xE2] "SET 4,D",
[0xE3] "SET 4,E",
[0xE4] "SET 4,H",
[0xE5] "SET 4,L",
[0xE6] "SET 4,(HL)",
[0xE7] "SET 4,A",
[0xE8] "SET 5,B",
[0xE9] "SET 5,C",
[0xEA] "SET 5,D",
[0xEB] "SET 5,E",
[0xEC] "SET 5,H",
[0xED] "SET 5,L",
[0xEE] "SET 5,(HL)",
[0xEF] "SET 5,A",
[0xF0] "SET 6,B",
[0xF1] "SET 6,C",
[0xF2] "SET 6,D",
[0xF3] "SET 6,E",
[0xF4] "SET 6,H",
[0xF5] "SET 6,L",
[0xF6] "SET 6,(HL)",
[0xF7] "SET 6,A",
[0xF8] "SET 7,B",
[0xF9] "SET 7,C",
[0xFA] "SET 7,D",
[0xFB] "SET 7,E",
[0xFC] "SET 7,H",
[0xFD] "SET 7,L",
[0xFE] "SET 7,(HL)",
[0xFF] "SET 7,A",
};
void
disasm(u16int addr)
{
u8int op;
int x;
op = memread(addr);
if(op == 0xCB){
op = memread(addr + 1);
print("%s\n", cbopcodes[op]);
return;
}
switch(operands[op]){
case 0:
print(opcodes[op]);
break;
case 1:
print(opcodes[op], (int)(memread(addr + 1)));
break;
case 2:
x = (uint)memread(addr + 2);
x <<= 8;
x |= (uint)memread(addr + 1);
print(opcodes[op], x);
}
print("\n");
}