From 5101a5f981627ca794fa2967053db33e338a4597 Mon Sep 17 00:00:00 2001 From: notaz Date: Tue, 3 Dec 2013 03:33:06 +0200 Subject: [PATCH] more ops, fixes, refactoring --- tools/translate.c | 494 +++++++++++++++++++++++++++++++++------------- 1 file changed, 358 insertions(+), 136 deletions(-) diff --git a/tools/translate.c b/tools/translate.c index da1c8f6..b606ff7 100644 --- a/tools/translate.c +++ b/tools/translate.c @@ -37,6 +37,7 @@ enum op_op { OP_MOVZX, OP_MOVSX, OP_NOT, + OP_CDQ, OP_RET, OP_ADD, OP_SUB, @@ -50,8 +51,11 @@ enum op_op { OP_SBB, OP_INC, OP_DEC, + OP_NEG, OP_MUL, OP_IMUL, + OP_DIV, + OP_IDIV, OP_TEST, OP_CMP, OP_CALL, @@ -175,51 +179,35 @@ static int char_array_i(const char *array[], size_t len, const char *s) return -1; } -static int parse_reg(int *reg_out, enum opr_lenmod *reg_lmod, - int *regmask, char *s) +static void printf_number(char *buf, size_t buf_size, long number) { - char w[16]; - int reg = xUNSPEC; - int c = 0; + // output in C-friendly form + snprintf(buf, buf_size, number < 10 ? "%lu" : "0x%02lx", number); +} - while (*s != 0) { - while (my_isblank(*s) || my_issep(*s)) - s++; - s = next_idt(w, sizeof(w), s); - if (w[0] == 0) - break; - c++; - reg = char_array_i(regs_r32, ARRAY_SIZE(regs_r32), w); - if (reg >= 0) { - *reg_lmod = OPLM_DWORD; - *regmask |= 1 << reg; - continue; - } - reg = char_array_i(regs_r16, ARRAY_SIZE(regs_r16), w); - if (reg >= 0) { - *reg_lmod = OPLM_WORD; - *regmask |= 1 << reg; - continue; - } - reg = char_array_i(regs_r8h, ARRAY_SIZE(regs_r8h), w); - if (reg >= 0) { - *reg_lmod = OPLM_BYTE; - *regmask |= 1 << reg; - continue; - } - reg = char_array_i(regs_r8l, ARRAY_SIZE(regs_r8l), w); - if (reg >= 0) { - *reg_lmod = OPLM_BYTE; - *regmask |= 1 << reg; - continue; - } +static int parse_reg(enum opr_lenmod *reg_lmod, const char *s) +{ + int reg; - return -1; + reg = char_array_i(regs_r32, ARRAY_SIZE(regs_r32), s); + if (reg >= 0) { + *reg_lmod = OPLM_DWORD; + return reg; } - - if (c == 1) { - *reg_out = reg; - return 0; + reg = char_array_i(regs_r16, ARRAY_SIZE(regs_r16), s); + if (reg >= 0) { + *reg_lmod = OPLM_WORD; + return reg; + } + reg = char_array_i(regs_r8h, ARRAY_SIZE(regs_r8h), s); + if (reg >= 0) { + *reg_lmod = OPLM_BYTE; + return reg; + } + reg = char_array_i(regs_r8l, ARRAY_SIZE(regs_r8l), s); + if (reg >= 0) { + *reg_lmod = OPLM_BYTE; + return reg; } return -1; @@ -255,6 +243,58 @@ static long parse_number(const char *number) return ret; } +static int parse_indmode(char *name, int *regmask, int need_c_cvt) +{ + enum opr_lenmod lmod; + char cvtbuf[256]; + char *d = cvtbuf; + char *s = name; + char w[64]; + long number; + int reg; + int c = 0; + + *d = 0; + + while (*s != 0) { + d += strlen(d); + while (my_isblank(*s)) + s++; + for (; my_issep(*s); d++, s++) + *d = *s; + while (my_isblank(*s)) + s++; + *d = 0; + + s = next_idt(w, sizeof(w), s); + if (w[0] == 0) + break; + c++; + + reg = parse_reg(&lmod, w); + if (reg >= 0) { + *regmask |= 1 << reg; + goto pass; + } + + if ('0' <= w[0] && w[0] <= '9') { + number = parse_number(w); + printf_number(d, sizeof(cvtbuf) - (d - cvtbuf), number); + continue; + } + + // probably some label/identifier - pass + +pass: + snprintf(d, sizeof(cvtbuf) - (d - cvtbuf), "%s", w); + } + + if (need_c_cvt) + strcpy(name, cvtbuf); + + return c; +} + static int guess_lmod_from_name(struct parsed_opr *opr) { if (!strncmp(opr->name, "dword_", 6)) { @@ -272,13 +312,22 @@ static int guess_lmod_from_name(struct parsed_opr *opr) return 0; } +static void setup_reg_opr(struct parsed_opr *opr, int reg, enum opr_lenmod lmod, + int *regmask) +{ + opr->type = OPT_REG; + opr->reg = reg; + opr->lmod = lmod; + *regmask |= 1 << reg; +} + static int parse_operand(struct parsed_opr *opr, int *regmask, int *regmask_indirect, char words[16][256], int wordc, int w, unsigned int op_flags) { enum opr_lenmod tmplmod; - int tmpreg; int ret, len; + long number; int i; if (w >= wordc) @@ -343,7 +392,7 @@ static int parse_operand(struct parsed_opr *opr, if (ret != 1) aerr("[] parse failure\n"); // only need the regmask - parse_reg(&tmpreg, &tmplmod, regmask_indirect, opr->name); + parse_indmode(opr->name, regmask_indirect, 1); return wordc; } else if (strchr(words[w], '[')) { @@ -351,22 +400,22 @@ static int parse_operand(struct parsed_opr *opr, opr->type = OPT_REGMEM; if (opr->lmod == OPLM_UNSPEC) guess_lmod_from_name(opr); - parse_reg(&tmpreg, &tmplmod, regmask_indirect, - strchr(words[w], '[')); + parse_indmode(strchr(words[w], '['), regmask_indirect, 0); return wordc; } else if (('0' <= words[w][0] && words[w][0] <= '9') || words[w][0] == '-') { + number = parse_number(words[w]); opr->type = OPT_CONST; - opr->val = (unsigned int)parse_number(words[w]); + opr->val = number; + printf_number(opr->name, sizeof(opr->name), number); return wordc; } - ret = parse_reg(&opr->reg, &tmplmod, regmask, opr->name); - if (ret == 0) { - opr->type = OPT_REG; - opr->lmod = tmplmod; + ret = parse_reg(&tmplmod, opr->name); + if (ret >= 0) { + setup_reg_opr(opr, ret, tmplmod, regmask); return wordc; } @@ -395,6 +444,7 @@ static const struct { { "movzx",OP_MOVZX, 2, 2, OPF_DATA }, { "movsx",OP_MOVSX, 2, 2, OPF_DATA }, { "not", OP_NOT, 1, 1, OPF_DATA }, + { "cdq", OP_CDQ, 0, 0, OPF_DATA }, { "add", OP_ADD, 2, 2, OPF_DATA|OPF_FLAGS }, { "sub", OP_SUB, 2, 2, OPF_DATA|OPF_FLAGS }, { "and", OP_AND, 2, 2, OPF_DATA|OPF_FLAGS }, @@ -404,12 +454,15 @@ static const struct { { "shr", OP_SHR, 2, 2, OPF_DATA|OPF_FLAGS }, { "sal", OP_SHL, 2, 2, OPF_DATA|OPF_FLAGS }, { "sar", OP_SAR, 2, 2, OPF_DATA|OPF_FLAGS }, -// { "adc", OP_ADC, 2, 2, OPF_DATA|OPF_FLAGS|OPF_CC }, + { "adc", OP_ADC, 2, 2, OPF_DATA|OPF_FLAGS|OPF_CC }, { "sbb", OP_SBB, 2, 2, OPF_DATA|OPF_FLAGS|OPF_CC }, { "inc", OP_INC, 1, 1, OPF_DATA|OPF_FLAGS }, { "dec", OP_DEC, 1, 1, OPF_DATA|OPF_FLAGS }, -// { "mul", OP_MUL, 1, 1, OPF_DATA|OPF_FLAGS }, + { "neg", OP_NEG, 1, 1, OPF_DATA|OPF_FLAGS }, + { "mul", OP_MUL, 1, 1, OPF_DATA|OPF_FLAGS }, { "imul", OP_IMUL, 1, 3, OPF_DATA|OPF_FLAGS }, + { "div", OP_DIV, 1, 1, OPF_DATA|OPF_FLAGS }, + { "idiv", OP_IDIV, 1, 1, OPF_DATA|OPF_FLAGS }, { "test", OP_TEST, 2, 2, OPF_FLAGS }, { "cmp", OP_CMP, 2, 2, OPF_FLAGS }, { "retn", OP_RET, 0, 1, OPF_JMP }, @@ -443,6 +496,34 @@ static const struct { { "jng", OP_JLE, 1, 1, OPF_JMP|OPF_CC }, // 7e { "jg", OP_JG, 1, 1, OPF_JMP|OPF_CC }, // 7f ZF=0 && SF=OF { "jnle", OP_JG, 1, 1, OPF_JMP|OPF_CC }, // 7f + { "seto", OP_JO, 1, 1, OPF_DATA|OPF_CC }, + { "setno", OP_JNO, 1, 1, OPF_DATA|OPF_CC }, + { "setc", OP_JC, 1, 1, OPF_DATA|OPF_CC }, + { "setb", OP_JC, 1, 1, OPF_DATA|OPF_CC }, + { "setnc", OP_JNC, 1, 1, OPF_DATA|OPF_CC }, + { "setae", OP_JNC, 1, 1, OPF_DATA|OPF_CC }, + { "setz", OP_JZ, 1, 1, OPF_DATA|OPF_CC }, + { "sete", OP_JZ, 1, 1, OPF_DATA|OPF_CC }, + { "setnz", OP_JNZ, 1, 1, OPF_DATA|OPF_CC }, + { "setne", OP_JNZ, 1, 1, OPF_DATA|OPF_CC }, + { "setbe", OP_JBE, 1, 1, OPF_DATA|OPF_CC }, + { "setna", OP_JBE, 1, 1, OPF_DATA|OPF_CC }, + { "seta", OP_JA, 1, 1, OPF_DATA|OPF_CC }, + { "setnbe", OP_JA, 1, 1, OPF_DATA|OPF_CC }, + { "sets", OP_JS, 1, 1, OPF_DATA|OPF_CC }, + { "setns", OP_JNS, 1, 1, OPF_DATA|OPF_CC }, + { "setp", OP_JP, 1, 1, OPF_DATA|OPF_CC }, + { "setpe", OP_JP, 1, 1, OPF_DATA|OPF_CC }, + { "setnp", OP_JNP, 1, 1, OPF_DATA|OPF_CC }, + { "setpo", OP_JNP, 1, 1, OPF_DATA|OPF_CC }, + { "setl", OP_JL, 1, 1, OPF_DATA|OPF_CC }, + { "setnge", OP_JL, 1, 1, OPF_DATA|OPF_CC }, + { "setge", OP_JGE, 1, 1, OPF_DATA|OPF_CC }, + { "setnl", OP_JGE, 1, 1, OPF_DATA|OPF_CC }, + { "setle", OP_JLE, 1, 1, OPF_DATA|OPF_CC }, + { "setng", OP_JLE, 1, 1, OPF_DATA|OPF_CC }, + { "setg", OP_JG, 1, 1, OPF_DATA|OPF_CC }, + { "setnle", OP_JG, 1, 1, OPF_DATA|OPF_CC }, }; static void parse_op(struct parsed_op *op, char words[16][256], int wordc) @@ -482,11 +563,56 @@ static void parse_op(struct parsed_op *op, char words[16][256], int wordc) words, wordc, w, op->flags); } - op->operand_cnt = opr; - if (w < wordc) aerr("parse_op %s incomplete: %d/%d\n", words[0], w, wordc); + + // special cases + op->operand_cnt = opr; + if (!strncmp(op_table[i].name, "set", 3)) + op->operand[0].lmod = OPLM_BYTE; + + // ops with implicit argumets + switch (op->op) { + case OP_CDQ: + op->operand_cnt = 2; + setup_reg_opr(&op->operand[0], xDX, OPLM_DWORD, &op->regmask_dst); + setup_reg_opr(&op->operand[1], xAX, OPLM_DWORD, &op->regmask_src); + break; + + case OP_IMUL: + if (op->operand_cnt != 1) + break; + // fallthrough + case OP_MUL: + // singleop mul + op->regmask_dst = (1 << xDX) | (1 << xAX); + op->regmask_src |= (1 << xAX); + if (op->operand[0].lmod == OPLM_UNSPEC) + op->operand[0].lmod = OPLM_DWORD; + break; + + case OP_DIV: + case OP_IDIV: + // we could set up operands for edx:eax, but there is no real need to + // (see is_opr_modified()) + regmask = (1 << xDX) | (1 << xAX); + op->regmask_dst = regmask; + op->regmask_src |= regmask; + if (op->operand[0].lmod == OPLM_UNSPEC) + op->operand[0].lmod = OPLM_DWORD; + break; + + case OP_SHL: + case OP_SHR: + case OP_SAR: + if (op->operand[1].lmod == OPLM_UNSPEC) + op->operand[1].lmod = OPLM_BYTE; + break; + + default: + break; + } } static const char *op_name(enum op_op op) @@ -637,7 +763,10 @@ static char *out_src_opr(char *buf, size_t buf_size, snprintf(buf, buf_size, "(u16)%s", opr_reg_p(po, popr)); break; case OPLM_BYTE: - snprintf(buf, buf_size, "(u8)%s", opr_reg_p(po, popr)); + if (popr->name[1] == 'h') // XXX.. + snprintf(buf, buf_size, "(u8)(%s >> 8)", opr_reg_p(po, popr)); + else + snprintf(buf, buf_size, "(u8)%s", opr_reg_p(po, popr)); break; default: ferr(po, "invalid src lmod: %d\n", popr->lmod); @@ -699,7 +828,7 @@ static char *out_src_opr(char *buf, size_t buf_size, if (is_lea) ferr(po, "lea from const?\n"); - snprintf(buf, buf_size, popr->val < 10 ? "%u" : "0x%02x", popr->val); + printf_number(buf, buf_size, popr->val); break; default: @@ -724,7 +853,10 @@ static char *out_dst_opr(char *buf, size_t buf_size, break; case OPLM_BYTE: // ugh.. - snprintf(buf, buf_size, "LOBYTE(%s)", opr_reg_p(po, popr)); + if (popr->name[1] == 'h') // XXX.. + snprintf(buf, buf_size, "BYTE1(%s)", opr_reg_p(po, popr)); + else + snprintf(buf, buf_size, "LOBYTE(%s)", opr_reg_p(po, popr)); break; default: ferr(po, "invalid dst lmod: %d\n", popr->lmod); @@ -779,6 +911,14 @@ static const char *lmod_cast_s(struct parsed_op *po, } } +static const char *lmod_cast(struct parsed_op *po, + enum opr_lenmod lmod, int is_signed) +{ + return is_signed ? + lmod_cast_s(po, lmod) : + lmod_cast_u(po, lmod); +} + static enum parsed_flag_op split_cond(struct parsed_op *po, enum op_op op, int *is_neg) { @@ -852,6 +992,12 @@ static void out_test_for_cc(char *buf, size_t buf_size, cast, expr, is_neg ? "!=" : "=="); break; + case PFO_S: + case PFO_L: // SF!=OF; OF=0 + snprintf(buf, buf_size, "(%s%s %s 0)", + scast, expr, is_neg ? ">=" : "<"); + break; + case PFO_LE: // ZF=1||SF!=OF; OF=0 after test snprintf(buf, buf_size, "(%s%s %s 0)", scast, expr, is_neg ? ">" : "<="); @@ -872,23 +1018,39 @@ static void out_cmp_for_cc(char *buf, size_t buf_size, scast = lmod_cast_s(po, lmod); switch (pfo) { + case PFO_C: + // note: must be unsigned compare + snprintf(buf, buf_size, "(%s%s %s %s%s)", + cast, expr1, is_neg ? ">=" : "<", cast, expr2); + break; + case PFO_Z: snprintf(buf, buf_size, "(%s%s %s %s%s)", cast, expr1, is_neg ? "!=" : "==", cast, expr2); break; - case PFO_C: + case PFO_BE: // !a // note: must be unsigned compare snprintf(buf, buf_size, "(%s%s %s %s%s)", - cast, expr1, is_neg ? ">=" : "<", cast, expr2); + cast, expr1, is_neg ? ">" : "<=", cast, expr2); + break; + + // note: must be signed compare + case PFO_S: + snprintf(buf, buf_size, "(%s(%s - %s) %s 0)", + scast, expr1, expr2, is_neg ? ">=" : "<"); break; - case PFO_L: - // note: must be signed compare + case PFO_L: // !ge snprintf(buf, buf_size, "(%s%s %s %s%s)", scast, expr1, is_neg ? ">=" : "<", scast, expr2); break; + case PFO_LE: + snprintf(buf, buf_size, "(%s%s %s %s%s)", + scast, expr1, is_neg ? ">" : "<=", scast, expr2); + break; + default: ferr(po, "%s: unhandled parsed_flag_op: %d\n", __func__, pfo); } @@ -954,8 +1116,10 @@ static const char *op_to_c(struct parsed_op *po) switch (po->op) { case OP_ADD: + case OP_ADC: return "+"; case OP_SUB: + case OP_SBB: return "-"; case OP_AND: return "&"; @@ -1025,8 +1189,8 @@ static int scan_for_pop_ret(int i, int opcnt, const char *reg, int do_patch) return found ? 0 : -1; } -// is operand opr modified by parsed_op po? -static int is_opr_modified(struct parsed_opr *opr, +// is operand 'opr modified' by parsed_op 'po'? +static int is_opr_modified(const struct parsed_opr *opr, const struct parsed_op *po) { if ((po->flags & OPF_RMD) || !(po->flags & OPF_DATA)) @@ -1042,18 +1206,37 @@ static int is_opr_modified(struct parsed_opr *opr, return IS(po->operand[0].name, opr->name); } -// scan for provided opr modification in range given -static int scan_for_mod(struct parsed_opr *opr, int i, int opcnt) +// is any operand of parsed_op 'po_test' modified by parsed_op 'po'? +static int is_any_opr_modified(const struct parsed_op *po_test, + const struct parsed_op *po) +{ + int i; + + if ((po->flags & OPF_RMD) || !(po->flags & OPF_DATA)) + return 0; + + if (po_test->regmask_src & po->regmask_dst) + return 1; + + for (i = 0; i < po_test->operand_cnt; i++) + if (IS(po_test->operand[i].name, po->operand[0].name)) + return 1; + + return 0; +} + +// scan for po_test operand modification in range given +static int scan_for_mod(struct parsed_op *po_test, int i, int opcnt) { for (; i < opcnt; i++) { - if (is_opr_modified(opr, &ops[i])) + if (is_any_opr_modified(po_test, &ops[i])) return i; } return -1; } -static int scan_for_flag_set(int i, int opcnt) +static int scan_for_flag_set(int i) { for (; i >= 0; i--) { if (ops[i].flags & OPF_FLAGS) @@ -1068,6 +1251,22 @@ static int scan_for_flag_set(int i, int opcnt) return -1; } +// scan back for cdq, if anything modifies edx, fail +static int scan_for_cdq_edx(int i) +{ + for (; i >= 0; i--) { + if (ops[i].op == OP_CDQ) + return i; + + if (ops[i].regmask_dst & (1 << xDX)) + return -1; + if (g_labels[i][0] != 0) + return -1; + } + + return -1; +} + static void gen_func(FILE *fout, FILE *fhdr, const char *funcn, int opcnt) { struct parsed_op *po, *delayed_flag_op = NULL, *tmp_op; @@ -1080,7 +1279,6 @@ static void gen_func(FILE *fout, FILE *fhdr, const char *funcn, int opcnt) int had_decl = 0; int regmask_arg = 0; int regmask = 0; - int special_sbb = 0; int no_output; int dummy; int arg; @@ -1173,20 +1371,21 @@ static void gen_func(FILE *fout, FILE *fhdr, const char *funcn, int opcnt) if (po->flags & OPF_CC) { - ret = scan_for_flag_set(i - 1, opcnt); + ret = scan_for_flag_set(i - 1); if (ret < 0) ferr(po, "unable to trace flag setter\n"); tmp_op = &ops[ret]; // flag setter - for (j = 0; j < tmp_op->operand_cnt; j++) { - ret = scan_for_mod(&tmp_op->operand[j], tmp_op - ops + 1, i); - if (ret >= 0) { - ret = 1 << split_cond(po, po->op, &dummy); - tmp_op->pfomask |= ret; - cmp_result_vars |= ret; - po->datap = tmp_op; - } + ret = scan_for_mod(tmp_op, ret + 1, i); + if (ret >= 0) { + ret = 1 << split_cond(po, po->op, &dummy); + tmp_op->pfomask |= ret; + cmp_result_vars |= ret; + po->datap = tmp_op; } + + if (po->op == OP_ADC || po->op == OP_SBB) + cmp_result_vars |= 1 << PFO_C; } else if (po->op == OP_CALL) { @@ -1210,7 +1409,7 @@ static void gen_func(FILE *fout, FILE *fhdr, const char *funcn, int opcnt) ferr(po, "arg search interrupted by '%s'\n", g_labels[j + 1]); pp->arg[arg].datap = &ops[j]; - ret = scan_for_mod(&ops[j].operand[0], j + 1, i); + ret = scan_for_mod(&ops[j], j + 1, i); if (ret >= 0) { // mark this push as one that needs operand saving ops[j].datap = (void *)(long)(arg + 1); @@ -1305,23 +1504,6 @@ static void gen_func(FILE *fout, FILE *fhdr, const char *funcn, int opcnt) if (po->operand_cnt != n_) \ ferr(po, "operand_cnt is %d/%d\n", po->operand_cnt, n_) - // see is delayed flag stuff is still valid - if (delayed_flag_op != NULL) { - if (po->regmask_dst & delayed_flag_op->regmask_src) - delayed_flag_op = NULL; - else { - for (j = 0; j < po->operand_cnt; j++) { - if (is_opr_modified(&delayed_flag_op->operand[0], po)) - delayed_flag_op = NULL; - } - } - } - - if (last_arith_dst != NULL) { - if (is_opr_modified(last_arith_dst, po)) - last_arith_dst = NULL; - } - // conditional/flag using op? if (po->flags & OPF_CC) { @@ -1329,9 +1511,6 @@ static void gen_func(FILE *fout, FILE *fhdr, const char *funcn, int opcnt) int is_neg = 0; pfo = split_cond(po, po->op, &is_neg); - special_sbb = 0; - if (po->op == OP_SBB && IS(opr_name(po, 0), opr_name(po, 1))) - special_sbb = 1; // we go through all this trouble to avoid using parsed_flag_op, // which makes generated code much nicer @@ -1363,11 +1542,10 @@ static void gen_func(FILE *fout, FILE *fhdr, const char *funcn, int opcnt) if (po->flags & OPF_JMP) { fprintf(fout, " if %s\n", buf1); } - else if (special_sbb) { - out_dst_opr(buf2, sizeof(buf2), po, &po->operand[0]); - fprintf(fout, " %s = %s * -1;", buf2, buf1); + else if (po->op == OP_ADC || po->op == OP_SBB) { + fprintf(fout, " cond_%s = %s;\n", parsed_flag_op_names[pfo], buf1); } - else if (po->flags & OPF_JMP) { // setc + else if (po->flags & OPF_DATA) { // SETcc out_dst_opr(buf2, sizeof(buf2), po, &po->operand[0]); fprintf(fout, " %s = %s;", buf2, buf1); } @@ -1425,17 +1603,25 @@ static void gen_func(FILE *fout, FILE *fhdr, const char *funcn, int opcnt) fprintf(fout, " %s = ~%s;", buf1, buf1); break; + case OP_CDQ: + assert_operand_cnt(2); + fprintf(fout, " %s = (s32)%s >> 31;", + out_dst_opr(buf1, sizeof(buf1), po, &po->operand[0]), + out_src_opr(buf2, sizeof(buf2), po, &po->operand[1], 0)); + strcpy(g_comment, "cdq"); + break; + // arithmetic w/flags case OP_ADD: case OP_SUB: case OP_AND: case OP_OR: - case OP_XOR: + propagate_lmod(po, &po->operand[0], &po->operand[1]); + // fallthrough case OP_SHL: case OP_SHR: dualop_arith: assert_operand_cnt(2); - propagate_lmod(po, &po->operand[0], &po->operand[1]); fprintf(fout, " %s %s= %s;", out_dst_opr(buf1, sizeof(buf1), po, &po->operand[0]), op_to_c(po), @@ -1444,51 +1630,55 @@ static void gen_func(FILE *fout, FILE *fhdr, const char *funcn, int opcnt) delayed_flag_op = NULL; break; - case OP_SAR: + case OP_XOR: assert_operand_cnt(2); propagate_lmod(po, &po->operand[0], &po->operand[1]); - switch (po->operand[0].lmod) { - case OPLM_BYTE: - strcpy(buf3, "(s8)"); + if (IS(opr_name(po, 0), opr_name(po, 1))) { + // special case for XOR + fprintf(fout, " %s = 0;", + out_dst_opr(buf1, sizeof(buf1), po, &po->operand[0])); + last_arith_dst = &po->operand[0]; + delayed_flag_op = NULL; break; - case OPLM_WORD: - strcpy(buf3, "(s16)"); - break; - case OPLM_DWORD: - strcpy(buf3, "(s32)"); - break; - default: - ferr(po, "invalid dst lmod: %d\n", po->operand[0].lmod); } + goto dualop_arith; + + case OP_SAR: + assert_operand_cnt(2); out_dst_opr(buf1, sizeof(buf1), po, &po->operand[0]); - fprintf(fout, " %s = %s%s >> %s;", buf1, buf3, buf1, - out_src_opr(buf2, sizeof(buf2), po, &po->operand[1], 0)); + fprintf(fout, " %s = %s%s >> %s;", buf1, + lmod_cast_s(po, po->operand[0].lmod), buf1, + out_src_opr(buf2, sizeof(buf2), po, &po->operand[1], 0)); last_arith_dst = &po->operand[0]; delayed_flag_op = NULL; break; + case OP_ADC: case OP_SBB: - if (!special_sbb) - ferr(po, "TODO\n"); + assert_operand_cnt(2); + propagate_lmod(po, &po->operand[0], &po->operand[1]); + fprintf(fout, " %s %s= %s + cond_c;", + out_dst_opr(buf1, sizeof(buf1), po, &po->operand[0]), + op_to_c(po), + out_src_opr(buf2, sizeof(buf2), po, &po->operand[1], 0)); + last_arith_dst = &po->operand[0]; + delayed_flag_op = NULL; break; case OP_INC: case OP_DEC: out_dst_opr(buf1, sizeof(buf1), po, &po->operand[0]); strcpy(buf2, po->op == OP_INC ? "++" : "--"); - switch (po->operand[0].lmod) { - case OPLM_BYTE: - fprintf(fout, " LOBYTE(%s)%s;", buf1, buf2); - break; - case OPLM_WORD: - fprintf(fout, " LOWORD(%s)%s;", buf1, buf2); - break; - case OPLM_DWORD: - fprintf(fout, " %s%s;", buf1, buf2); - break; - default: - ferr(po, "invalid dst lmod: %d\n", po->operand[0].lmod); - } + fprintf(fout, " %s%s;", buf1, buf2); + last_arith_dst = &po->operand[0]; + delayed_flag_op = NULL; + break; + + case OP_NEG: + out_dst_opr(buf1, sizeof(buf1), po, &po->operand[0]); + out_src_opr(buf2, sizeof(buf2), po, &po->operand[0], 0); + fprintf(fout, " %s = -%s%s;", buf1, + lmod_cast_s(po, po->operand[0].lmod), buf2); last_arith_dst = &po->operand[0]; delayed_flag_op = NULL; break; @@ -1501,6 +1691,24 @@ static void gen_func(FILE *fout, FILE *fhdr, const char *funcn, int opcnt) delayed_flag_op = NULL; break; + case OP_DIV: + case OP_IDIV: + assert_operand_cnt(1); + if (po->operand[0].lmod != OPLM_DWORD) + ferr(po, "unhandled lmod %d\n", po->operand[0].lmod); + + // 32bit division is common, look for it + if (scan_for_cdq_edx(i - 1) >= 0) { + out_src_opr(buf1, sizeof(buf1), po, &po->operand[0], 0); + strcpy(buf2, lmod_cast(po, po->operand[0].lmod, + po->op == OP_IDIV)); + fprintf(fout, " edx = %seax %% %s%s;\n", buf2, buf2, buf1); + fprintf(fout, " eax = %seax / %s%s;", buf2, buf2, buf1); + } + else + ferr(po, "TODO 64bit divident\n"); + break; + case OP_TEST: case OP_CMP: propagate_lmod(po, &po->operand[0], &po->operand[1]); @@ -1520,10 +1728,9 @@ static void gen_func(FILE *fout, FILE *fhdr, const char *funcn, int opcnt) // note: we reuse OP_Jcc for SETcc, only flags differ case OP_JO ... OP_JG: - if (po->flags & OPF_CC) + if (po->flags & OPF_JMP) fprintf(fout, " goto %s;", po->operand[0].name); - else - ferr(po, "TODO SETcc\n"); + // else SETcc - should already be handled break; case OP_JMP: @@ -1531,6 +1738,10 @@ static void gen_func(FILE *fout, FILE *fhdr, const char *funcn, int opcnt) break; case OP_CALL: + assert_operand_cnt(1); + if (po->operand[0].type != OPT_LABEL) + ferr(po, "unhandled call type\n"); + pp = po->datap; if (pp == NULL) ferr(po, "NULL pp\n"); @@ -1601,6 +1812,17 @@ static void gen_func(FILE *fout, FILE *fhdr, const char *funcn, int opcnt) } if (!no_output) fprintf(fout, "\n"); + + // see is delayed flag stuff is still valid + if (delayed_flag_op != NULL && delayed_flag_op != po) { + if (is_any_opr_modified(delayed_flag_op, po)) + delayed_flag_op = NULL; + } + + if (last_arith_dst != NULL && last_arith_dst != &po->operand[0]) { + if (is_opr_modified(last_arith_dst, po)) + last_arith_dst = NULL; + } } fprintf(fout, "}\n\n"); -- 2.39.2