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Diffstat (limited to 'deps/lightrec/disassembler.h')
| -rw-r--r-- | deps/lightrec/disassembler.h | 212 |
1 files changed, 212 insertions, 0 deletions
diff --git a/deps/lightrec/disassembler.h b/deps/lightrec/disassembler.h new file mode 100644 index 0000000..e4c4403 --- /dev/null +++ b/deps/lightrec/disassembler.h @@ -0,0 +1,212 @@ +/* + * Copyright (C) 2014 Paul Cercueil <paul@crapouillou.net> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + */ + +#ifndef __DISASSEMBLER_H__ +#define __DISASSEMBLER_H__ + +#include "debug.h" +#include "lightrec.h" + +#ifndef __packed +#define __packed __attribute__((packed)) +#endif + +#define LIGHTREC_DIRECT_IO (1 << 0) +#define LIGHTREC_NO_INVALIDATE (1 << 1) +#define LIGHTREC_NO_DS (1 << 2) +#define LIGHTREC_SMC (1 << 3) +#define LIGHTREC_EMULATE_BRANCH (1 << 4) +#define LIGHTREC_LOCAL_BRANCH (1 << 5) +#define LIGHTREC_HW_IO (1 << 6) +#define LIGHTREC_MULT32 (1 << 7) + +struct block; + +enum standard_opcodes { + OP_SPECIAL = 0x00, + OP_REGIMM = 0x01, + OP_J = 0x02, + OP_JAL = 0x03, + OP_BEQ = 0x04, + OP_BNE = 0x05, + OP_BLEZ = 0x06, + OP_BGTZ = 0x07, + OP_ADDI = 0x08, + OP_ADDIU = 0x09, + OP_SLTI = 0x0a, + OP_SLTIU = 0x0b, + OP_ANDI = 0x0c, + OP_ORI = 0x0d, + OP_XORI = 0x0e, + OP_LUI = 0x0f, + OP_CP0 = 0x10, + OP_CP2 = 0x12, + OP_LB = 0x20, + OP_LH = 0x21, + OP_LWL = 0x22, + OP_LW = 0x23, + OP_LBU = 0x24, + OP_LHU = 0x25, + OP_LWR = 0x26, + OP_SB = 0x28, + OP_SH = 0x29, + OP_SWL = 0x2a, + OP_SW = 0x2b, + OP_SWR = 0x2e, + OP_LWC2 = 0x32, + OP_SWC2 = 0x3a, + + OP_META_REG_UNLOAD = 0x11, + + OP_META_BEQZ = 0x14, + OP_META_BNEZ = 0x15, + + OP_META_MOV = 0x16, + OP_META_SYNC = 0x17, +}; + +enum special_opcodes { + OP_SPECIAL_SLL = 0x00, + OP_SPECIAL_SRL = 0x02, + OP_SPECIAL_SRA = 0x03, + OP_SPECIAL_SLLV = 0x04, + OP_SPECIAL_SRLV = 0x06, + OP_SPECIAL_SRAV = 0x07, + OP_SPECIAL_JR = 0x08, + OP_SPECIAL_JALR = 0x09, + OP_SPECIAL_SYSCALL = 0x0c, + OP_SPECIAL_BREAK = 0x0d, + OP_SPECIAL_MFHI = 0x10, + OP_SPECIAL_MTHI = 0x11, + OP_SPECIAL_MFLO = 0x12, + OP_SPECIAL_MTLO = 0x13, + OP_SPECIAL_MULT = 0x18, + OP_SPECIAL_MULTU = 0x19, + OP_SPECIAL_DIV = 0x1a, + OP_SPECIAL_DIVU = 0x1b, + OP_SPECIAL_ADD = 0x20, + OP_SPECIAL_ADDU = 0x21, + OP_SPECIAL_SUB = 0x22, + OP_SPECIAL_SUBU = 0x23, + OP_SPECIAL_AND = 0x24, + OP_SPECIAL_OR = 0x25, + OP_SPECIAL_XOR = 0x26, + OP_SPECIAL_NOR = 0x27, + OP_SPECIAL_SLT = 0x2a, + OP_SPECIAL_SLTU = 0x2b, +}; + +enum regimm_opcodes { + OP_REGIMM_BLTZ = 0x00, + OP_REGIMM_BGEZ = 0x01, + OP_REGIMM_BLTZAL = 0x10, + OP_REGIMM_BGEZAL = 0x11, +}; + +enum cp0_opcodes { + OP_CP0_MFC0 = 0x00, + OP_CP0_CFC0 = 0x02, + OP_CP0_MTC0 = 0x04, + OP_CP0_CTC0 = 0x06, + OP_CP0_RFE = 0x10, +}; + +enum cp2_opcodes { + OP_CP2_BASIC = 0x00, +}; + +enum cp2_basic_opcodes { + OP_CP2_BASIC_MFC2 = 0x00, + OP_CP2_BASIC_CFC2 = 0x02, + OP_CP2_BASIC_MTC2 = 0x04, + OP_CP2_BASIC_CTC2 = 0x06, +}; + +struct opcode_r { +#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ + u32 zero :6; + u32 rs :5; + u32 rt :5; + u32 rd :5; + u32 imm :5; + u32 op :6; +#else + u32 op :6; + u32 imm :5; + u32 rd :5; + u32 rt :5; + u32 rs :5; + u32 zero :6; +#endif +} __packed; + +struct opcode_i { +#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ + u32 op :6; + u32 rs :5; + u32 rt :5; + u32 imm :16; +#else + u32 imm :16; + u32 rt :5; + u32 rs :5; + u32 op :6; +#endif +} __packed; + +struct opcode_j { +#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ + u32 op :6; + u32 imm :26; +#else + u32 imm :26; + u32 op :6; +#endif +} __packed; + +union code { + /* Keep in sync with struct opcode */ + u32 opcode; + struct opcode_r r; + struct opcode_i i; + struct opcode_j j; +}; + +struct opcode { + /* Keep this union at the first position */ + union { + union code c; + + /* Keep in sync with union code */ + u32 opcode; + struct opcode_r r; + struct opcode_i i; + struct opcode_j j; + }; + u16 flags; + u16 offset; + struct opcode *next; +}; + +struct opcode * lightrec_disassemble(struct lightrec_state *state, + const u32 *src, unsigned int *len); +void lightrec_free_opcode_list(struct lightrec_state *state, + struct opcode *list); + +unsigned int lightrec_cycles_of_opcode(union code code); + +void lightrec_print_disassembly(const struct block *block, + const u32 *code, unsigned int length); + +#endif /* __DISASSEMBLER_H__ */ |