diff options
Diffstat (limited to 'parse.c')
| -rw-r--r-- | parse.c | 133 |
1 files changed, 125 insertions, 8 deletions
@@ -86,24 +86,135 @@ static String decodestring(char *s) { return (String){.kind = ASM_STRING, .len = len, .data = data}; } -#define INSTR1(V, A1) \ +static int needsmovabs(Imm *imm) { + int64_t mask, maskedc; + + if (imm->v.l) + return 1; + + mask = 0xffffffff80000000; + maskedc = (uint64_t)imm->v.c & mask; + return (maskedc != mask && maskedc != 0); +} + +#define OP(OPCODE) \ + (Parsev) { \ + .instr = (Instr) { \ + .kind = ASM_INSTR, .encoder = ENCODER_OP, .prefix = -1, \ + .opcode = OPCODE, \ + } \ + } + +#define OPREG(PREFIX, REX, OPCODE, REG, A1) \ + (Parsev) { \ + .instr = (Instr) { \ + .kind = ASM_INSTR, .encoder = ENCODER_OPREG, .prefix = PREFIX, \ + .rex = REX, .fixedreg = REG, .opcode = OPCODE, .arg1 = internparsev(&A1) \ + } \ + } + +#define OPMEM(PREFIX, REX, OPCODE, REG, A1) \ + (Parsev) { \ + .instr = (Instr) { \ + .kind = ASM_INSTR, .encoder = ENCODER_OPMEM, .prefix = PREFIX, \ + .rex = REX, .fixedreg = REG, .opcode = OPCODE, .arg1 = internparsev(&A1) \ + } \ + } + +#define R(PREFIX, REX, OPCODE, A1) \ + (Parsev) { \ + .instr = (Instr) { \ + .kind = ASM_INSTR, .encoder = ENCODER_R, .prefix = PREFIX, \ + .opcode = OPCODE, .rex = REX, .arg1 = internparsev(&A1), \ + } \ + } + +#define IMM(PREFIX, REX, OPCODE, A1, A2) \ (Parsev) { \ .instr = (Instr) { \ - .kind = 0, .variant = V, .arg1 = internparsev(&A1), .arg2 = NULL, \ - .arg3 = NULL \ + .kind = ASM_INSTR, .encoder = ENCODER_IMM, .prefix = PREFIX, \ + .opcode = OPCODE, .rex = REX, .arg1 = internparsev(&A1), \ + .arg2 = internparsev(&A2) \ } \ } -#define INSTR2(V, A1, A2) \ + +#define RIMM(PREFIX, REX, OPCODE, A1, A2) \ + (Parsev) { \ + .instr = (Instr) { \ + .kind = ASM_INSTR, .encoder = ENCODER_RIMM, .prefix = PREFIX, \ + .opcode = OPCODE, .rex = REX, .arg1 = internparsev(&A1), \ + .arg2 = internparsev(&A2) \ + } \ + } + +#define IMMREG(PREFIX, REX, OPCODE, IMMREG, A1, A2) \ (Parsev) { \ .instr = (Instr) { \ - .kind = 0, .variant = V, .arg1 = internparsev(&A1), \ - .arg2 = internparsev(&A2), .arg3 = NULL \ + .kind = ASM_INSTR, .encoder = ENCODER_IMMREG, .prefix = PREFIX, \ + .opcode = OPCODE, .rex = REX, .fixedreg = IMMREG, \ + .arg1 = internparsev(&A1), .arg2 = internparsev(&A2) \ } \ } -#define INSTR3(V, A1, A2, A3) \ + +#define IMMMEM(PREFIX, REX, OPCODE, IMMREG, A1, A2) \ (Parsev) { \ .instr = (Instr) { \ - .kind = 0, .variant = V, .arg1 = internparsev(&A1), \ + .kind = ASM_INSTR, .encoder = ENCODER_IMMMEM, .prefix = PREFIX, \ + .opcode = OPCODE, .rex = REX, .fixedreg = IMMREG, \ + .arg1 = internparsev(&A1), .arg2 = internparsev(&A2) \ + } \ + } + +#define REGMEM(PREFIX, REX, OPCODE, A1, A2) \ + (Parsev) { \ + .instr = (Instr) { \ + .kind = ASM_INSTR, .encoder = ENCODER_REGMEM, .prefix = PREFIX, \ + .opcode = OPCODE, .rex = REX, .arg1 = internparsev(&A1), \ + .arg2 = internparsev(&A2) \ + } \ + } + +#define MEMREG(PREFIX, REX, OPCODE, A1, A2) \ + (Parsev) { \ + .instr = (Instr) { \ + .kind = ASM_INSTR, .encoder = ENCODER_MEMREG, .prefix = PREFIX, \ + .opcode = OPCODE, .rex = REX, .arg1 = internparsev(&A1), \ + .arg2 = internparsev(&A2) \ + } \ + } + +#define REGREG(PREFIX, REX, OPCODE, A1, A2) \ + (Parsev) { \ + .instr = (Instr) { \ + .kind = ASM_INSTR, .encoder = ENCODER_REGREG, .prefix = PREFIX, \ + .opcode = OPCODE, .rex = REX, .arg1 = internparsev(&A1), \ + .arg2 = internparsev(&A2) \ + } \ + } + +#define REGREG2(PREFIX, REX, OPCODE, A1, A2) \ + (Parsev) { \ + .instr = (Instr) { \ + .kind = ASM_INSTR, .encoder = ENCODER_REGREG2, .prefix = PREFIX, \ + .opcode = OPCODE, .rex = REX, .arg1 = internparsev(&A1), \ + .arg2 = internparsev(&A2) \ + } \ + } + +#define IMMREGREG2(PREFIX, REX, OPCODE, A1, A2, A3) \ + (Parsev) { \ + .instr = (Instr) { \ + .kind = ASM_INSTR, .encoder = ENCODER_IMMREGREG2, .prefix = PREFIX, \ + .opcode = OPCODE, .rex = REX, .arg1 = internparsev(&A1), \ + .arg2 = internparsev(&A2), .arg3 = internparsev(&A3) \ + } \ + } + +#define IMMMEMREG(PREFIX, REX, OPCODE, A1, A2, A3) \ + (Parsev) { \ + .instr = (Instr) { \ + .kind = ASM_INSTR, .encoder = ENCODER_IMMMEMREG, .prefix = PREFIX, \ + .opcode = OPCODE, .rex = REX, .arg1 = internparsev(&A1), \ .arg2 = internparsev(&A2), .arg3 = internparsev(&A3) \ } \ } @@ -111,6 +222,12 @@ static String decodestring(char *s) { #define REG(K) \ (Parsev) { .kind = ASM_##K } +static uint8_t cc2setop[30] = { + 0x94, 0x98, 0x9b, 0x9a, 0x9a, 0x90, 0x95, 0x99, 0x9b, 0x91, + 0x9f, 0x9d, 0x9c, 0x9e, 0x95, 0x93, 0x97, 0x93, 0x92, 0x96, + 0x9e, 0x9c, 0x9d, 0x9f, 0x94, 0x92, 0x96, 0x92, 0x93, 0x97, +}; + #define YYSTYPE Parsev #define YY_CTX_LOCAL #define YY_CTX_MEMBERS Parsev v; |