1 /* The Netwide Assembler main program module
3 * The Netwide Assembler is copyright (C) 1996 Simon Tatham and
4 * Julian Hall. All rights reserved. The software is
5 * redistributable under the licence given in the file "Licence"
6 * distributed in the NASM archive.
32 struct forwrefinfo { /* info held on forward refs. */
37 static int get_bits(char *value);
38 static uint32_t get_cpu(char *cpu_str);
39 static void parse_cmdline(int, char **);
40 static void assemble_file(char *);
41 static void register_output_formats(void);
42 static void report_error_gnu(int severity, const char *fmt, ...);
43 static void report_error_vc(int severity, const char *fmt, ...);
44 static void report_error_common(int severity, const char *fmt,
46 static int is_suppressed_warning(int severity);
47 static void usage(void);
48 static efunc report_error;
50 static int using_debug_info, opt_verbose_info;
51 bool tasm_compatible_mode = false;
56 static char inname[FILENAME_MAX];
57 static char outname[FILENAME_MAX];
58 static char listname[FILENAME_MAX];
59 static char errname[FILENAME_MAX];
60 static int globallineno; /* for forward-reference tracking */
61 /* static int pass = 0; */
62 static struct ofmt *ofmt = NULL;
64 static FILE *error_file; /* Where to write error messages */
66 static FILE *ofile = NULL;
67 int optimizing = -1; /* number of optimization passes to take */
68 static int sb, cmd_sb = 16; /* by default */
69 static uint32_t cmd_cpu = IF_PLEVEL; /* highest level by default */
70 static uint32_t cpu = IF_PLEVEL; /* passed to insn_size & assemble.c */
71 bool global_offset_changed; /* referenced in labels.c */
73 static struct location location;
74 int in_abs_seg; /* Flag we are in ABSOLUTE seg */
75 int32_t abs_seg; /* ABSOLUTE segment basis */
76 int32_t abs_offset; /* ABSOLUTE offset */
78 static struct RAA *offsets;
80 static struct SAA *forwrefs; /* keep track of forward references */
81 static const struct forwrefinfo *forwref;
83 static Preproc *preproc;
85 op_normal, /* Preprocess and assemble */
86 op_preprocess, /* Preprocess only */
87 op_depend, /* Generate dependencies */
88 op_depend_missing_ok, /* Generate dependencies, missing OK */
90 static enum op_type operating_mode;
93 * Which of the suppressible warnings are suppressed. Entry zero
94 * doesn't do anything. Initial defaults are given here.
96 static bool suppressed[1 + ERR_WARN_MAX] = {
97 0, true, true, true, false, true, false, true, true, false
101 * The option names for the suppressible warnings. As before, entry
104 static const char *suppressed_names[1 + ERR_WARN_MAX] = {
105 NULL, "macro-params", "macro-selfref", "orphan-labels",
106 "number-overflow", "gnu-elf-extensions", "float-overflow",
107 "float-denorm", "float-underflow", "float-toolong"
111 * The explanations for the suppressible warnings. As before, entry
114 static const char *suppressed_what[1 + ERR_WARN_MAX] = {
116 "macro calls with wrong no. of params",
117 "cyclic macro self-references",
118 "labels alone on lines without trailing `:'",
119 "numeric constants do not fit in 32 bits",
120 "using 8- or 16-bit relocation in ELF32, a GNU extension",
121 "floating point overflow",
122 "floating point denormal",
123 "floating point underflow",
124 "too many digits in floating-point number"
128 * This is a null preprocessor which just copies lines from input
129 * to output. It's used when someone explicitly requests that NASM
130 * not preprocess their source file.
133 static void no_pp_reset(char *, int, efunc, evalfunc, ListGen *);
134 static char *no_pp_getline(void);
135 static void no_pp_cleanup(int);
136 static Preproc no_pp = {
143 * get/set current offset...
145 #define GET_CURR_OFFS (in_abs_seg?abs_offset:\
146 raa_read(offsets,location.segment))
147 #define SET_CURR_OFFS(x) (in_abs_seg?(void)(abs_offset=(x)):\
148 (void)(offsets=raa_write(offsets,location.segment,(x))))
150 static int want_usage;
151 static int terminate_after_phase;
152 int user_nolist = 0; /* fbk 9/2/00 */
154 static void nasm_fputs(const char *line, FILE * outfile)
157 fputs(line, outfile);
158 fputc('\n', outfile);
163 int main(int argc, char **argv)
166 want_usage = terminate_after_phase = false;
167 report_error = report_error_gnu;
171 nasm_set_malloc_error(report_error);
172 offsets = raa_init();
173 forwrefs = saa_init((int32_t)sizeof(struct forwrefinfo));
176 operating_mode = op_normal;
180 register_output_formats();
182 parse_cmdline(argc, argv);
184 if (terminate_after_phase) {
190 /* If debugging info is disabled, suppress any debug calls */
191 if (!using_debug_info)
192 ofmt->current_dfmt = &null_debug_form;
195 pp_extra_stdmac(ofmt->stdmac);
196 parser_global_info(ofmt, &location);
197 eval_global_info(ofmt, lookup_label, &location);
199 /* define some macros dependent of command-line */
202 snprintf(temp, sizeof(temp), "__OUTPUT_FORMAT__=%s\n",
207 switch (operating_mode) {
208 case op_depend_missing_ok:
209 pp_include_path(NULL); /* "assume generated" */
214 preproc->reset(inname, 0, report_error, evaluate, &nasmlist);
215 if (outname[0] == '\0')
216 ofmt->filename(inname, outname, report_error);
218 fprintf(stdout, "%s: %s", outname, inname);
219 while ((line = preproc->getline()))
229 char *file_name = NULL;
230 int32_t prior_linnum = 0;
234 ofile = fopen(outname, "w");
236 report_error(ERR_FATAL | ERR_NOFILE,
237 "unable to open output file `%s'",
242 location.known = false;
245 preproc->reset(inname, 2, report_error, evaluate, &nasmlist);
246 while ((line = preproc->getline())) {
248 * We generate %line directives if needed for later programs
250 int32_t linnum = prior_linnum += lineinc;
251 int altline = src_get(&linnum, &file_name);
253 if (altline == 1 && lineinc == 1)
254 nasm_fputs("", ofile);
256 lineinc = (altline != -1 || lineinc != 1);
257 fprintf(ofile ? ofile : stdout,
258 "%%line %"PRId32"+%d %s\n", linnum, lineinc,
261 prior_linnum = linnum;
263 nasm_fputs(line, ofile);
266 nasm_free(file_name);
270 if (ofile && terminate_after_phase)
278 * We must call ofmt->filename _anyway_, even if the user
279 * has specified their own output file, because some
280 * formats (eg OBJ and COFF) use ofmt->filename to find out
281 * the name of the input file and then put that inside the
284 ofmt->filename(inname, outname, report_error);
286 ofile = fopen(outname, "wb");
288 report_error(ERR_FATAL | ERR_NOFILE,
289 "unable to open output file `%s'", outname);
293 * We must call init_labels() before ofmt->init() since
294 * some object formats will want to define labels in their
295 * init routines. (eg OS/2 defines the FLAT group)
299 ofmt->init(ofile, report_error, define_label, evaluate);
301 assemble_file(inname);
303 if (!terminate_after_phase) {
304 ofmt->cleanup(using_debug_info);
308 * We had an fclose on the output file here, but we
309 * actually do that in all the object file drivers as well,
310 * so we're leaving out the one here.
329 if (terminate_after_phase)
336 * Get a parameter for a command line option.
337 * First arg must be in the form of e.g. -f...
339 static char *get_param(char *p, char *q, int *advance)
342 if (p[2]) { /* the parameter's in the option */
352 report_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
353 "option `-%c' requires an argument", p[1]);
363 #define OPT_POSTFIX 1
364 struct textargs textopts[] = {
365 {"prefix", OPT_PREFIX},
366 {"postfix", OPT_POSTFIX},
371 static int process_arg(char *p, char *q)
379 if (p[0] == '-' && !stopoptions) {
384 case 'o': /* these parameters take values */
399 if (!(param = get_param(p, q, &advance)))
401 if (p[1] == 'o') { /* output file */
402 strcpy(outname, param);
403 } else if (p[1] == 'f') { /* output format */
404 ofmt = ofmt_find(param);
406 report_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
407 "unrecognised output format `%s' - "
408 "use -hf for a list", param);
410 ofmt->current_dfmt = ofmt->debug_formats[0];
411 } else if (p[1] == 'O') { /* Optimization level */
415 /* Naked -O == -Ox */
416 optimizing = INT_MAX >> 1; /* Almost unlimited */
420 case '0': case '1': case '2': case '3': case '4':
421 case '5': case '6': case '7': case '8': case '9':
422 opt = strtoul(param, ¶m, 10);
424 /* -O0 -> optimizing == -1, 0.98 behaviour */
425 /* -O1 -> optimizing == 0, 0.98.09 behaviour */
427 optimizing = opt - 1;
429 /* The optimizer seems to have problems with
430 < 5 passes? Hidden bug? */
431 optimizing = 5; /* 5 passes */
433 optimizing = opt; /* More than 5 passes */
439 opt_verbose_info = true;
444 optimizing = INT_MAX >> 1; /* Almost unlimited */
448 report_error(ERR_FATAL,
449 "unknown optimization option -O%c\n",
455 } else if (p[1] == 'P' || p[1] == 'p') { /* pre-include */
456 pp_pre_include(param);
457 } else if (p[1] == 'D' || p[1] == 'd') { /* pre-define */
458 pp_pre_define(param);
459 } else if (p[1] == 'U' || p[1] == 'u') { /* un-define */
460 pp_pre_undefine(param);
461 } else if (p[1] == 'I' || p[1] == 'i') { /* include search path */
462 pp_include_path(param);
463 } else if (p[1] == 'l') { /* listing file */
464 strcpy(listname, param);
465 } else if (p[1] == 'Z') { /* error messages file */
466 strcpy(errname, param);
467 } else if (p[1] == 'F') { /* specify debug format */
468 ofmt->current_dfmt = dfmt_find(ofmt, param);
469 if (!ofmt->current_dfmt) {
470 report_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
471 "unrecognized debug format `%s' for"
472 " output format `%s'",
473 param, ofmt->shortname);
475 } else if (p[1] == 'X') { /* specify error reporting format */
476 if (nasm_stricmp("vc", param) == 0)
477 report_error = report_error_vc;
478 else if (nasm_stricmp("gnu", param) == 0)
479 report_error = report_error_gnu;
481 report_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
482 "unrecognized error reporting format `%s'",
487 using_debug_info = true;
491 ("usage: nasm [-@ response file] [-o outfile] [-f format] "
493 " [options...] [--] filename\n"
494 " or nasm -v for version info\n\n"
495 " -t assemble in SciTech TASM compatible mode\n"
496 " -g generate debug information in selected format.\n");
498 (" -E (or -e) preprocess only (writes output to stdout by default)\n"
499 " -a don't preprocess (assemble only)\n"
500 " -M generate Makefile dependencies on stdout\n"
501 " -MG d:o, missing files assumed generated\n\n"
502 " -Z<file> redirect error messages to file\n"
503 " -s redirect error messages to stdout\n\n"
504 " -F format select a debugging format\n\n"
505 " -I<path> adds a pathname to the include file path\n");
507 (" -O<digit> optimize branch offsets (-O0 disables, default)\n"
508 " -P<file> pre-includes a file\n"
509 " -D<macro>[=<value>] pre-defines a macro\n"
510 " -U<macro> undefines a macro\n"
511 " -X<format> specifies error reporting format (gnu or vc)\n"
512 " -w+foo enables warnings about foo; -w-foo disables them\n"
513 "where foo can be:\n");
514 for (i = 1; i <= ERR_WARN_MAX; i++)
515 printf(" %-23s %s (default %s)\n",
516 suppressed_names[i], suppressed_what[i],
517 suppressed[i] ? "off" : "on");
519 ("\nresponse files should contain command line parameters"
520 ", one per line.\n");
522 printf("\nvalid output formats for -f are"
523 " (`*' denotes default):\n");
524 ofmt_list(ofmt, stdout);
526 printf("\nFor a list of valid output formats, use -hf.\n");
527 printf("For a list of debug formats, use -f <form> -y.\n");
529 exit(0); /* never need usage message here */
532 printf("\nvalid debug formats for '%s' output format are"
533 " ('*' denotes default):\n", ofmt->shortname);
534 dfmt_list(ofmt, stdout);
538 tasm_compatible_mode = true;
542 const char *nasm_version_string =
543 "NASM version " NASM_VER " compiled on " __DATE__
548 puts(nasm_version_string);
549 exit(0); /* never need usage message here */
552 case 'e': /* preprocess only */
554 operating_mode = op_preprocess;
556 case 'a': /* assemble only - don't preprocess */
560 if (p[2] != '+' && p[2] != '-') {
561 report_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
562 "invalid option to `-w'");
564 for (i = 1; i <= ERR_WARN_MAX; i++)
565 if (!nasm_stricmp(p + 3, suppressed_names[i]))
567 if (i <= ERR_WARN_MAX)
568 suppressed[i] = (p[2] == '-');
570 report_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
571 "invalid option to `-w'");
575 operating_mode = p[2] == 'G' ? op_depend_missing_ok : op_depend;
582 if (p[2] == 0) { /* -- => stop processing options */
586 for (s = 0; textopts[s].label; s++) {
587 if (!nasm_stricmp(p + 2, textopts[s].label)) {
598 report_error(ERR_NONFATAL | ERR_NOFILE |
600 "option `--%s' requires an argument",
604 advance = 1, param = q;
607 if (s == OPT_PREFIX) {
608 strncpy(lprefix, param, PREFIX_MAX - 1);
609 lprefix[PREFIX_MAX - 1] = 0;
612 if (s == OPT_POSTFIX) {
613 strncpy(lpostfix, param, POSTFIX_MAX - 1);
614 lpostfix[POSTFIX_MAX - 1] = 0;
621 report_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
622 "unrecognised option `--%s'", p + 2);
630 if (!ofmt->setinfo(GI_SWITCH, &p))
631 report_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
632 "unrecognised option `-%c'", p[1]);
637 report_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
638 "more than one input file specified");
646 #define ARG_BUF_DELTA 128
648 static void process_respfile(FILE * rfile)
650 char *buffer, *p, *q, *prevarg;
651 int bufsize, prevargsize;
653 bufsize = prevargsize = ARG_BUF_DELTA;
654 buffer = nasm_malloc(ARG_BUF_DELTA);
655 prevarg = nasm_malloc(ARG_BUF_DELTA);
658 while (1) { /* Loop to handle all lines in file */
661 while (1) { /* Loop to handle long lines */
662 q = fgets(p, bufsize - (p - buffer), rfile);
666 if (p > buffer && p[-1] == '\n')
668 if (p - buffer > bufsize - 10) {
671 bufsize += ARG_BUF_DELTA;
672 buffer = nasm_realloc(buffer, bufsize);
677 if (!q && p == buffer) {
679 process_arg(prevarg, NULL);
686 * Play safe: remove CRs, LFs and any spurious ^Zs, if any of
687 * them are present at the end of the line.
689 *(p = &buffer[strcspn(buffer, "\r\n\032")]) = '\0';
691 while (p > buffer && isspace(p[-1]))
698 if (process_arg(prevarg, p))
701 if ((int) strlen(p) > prevargsize - 10) {
702 prevargsize += ARG_BUF_DELTA;
703 prevarg = nasm_realloc(prevarg, prevargsize);
709 /* Function to process args from a string of args, rather than the
710 * argv array. Used by the environment variable and response file
713 static void process_args(char *args)
715 char *p, *q, *arg, *prevarg;
716 char separator = ' ';
724 while (*p && *p != separator)
726 while (*p == separator)
730 if (process_arg(prevarg, arg))
734 process_arg(arg, NULL);
737 static void parse_cmdline(int argc, char **argv)
740 char *envreal, *envcopy = NULL, *p, *arg;
742 *inname = *outname = *listname = *errname = '\0';
745 * First, process the NASMENV environment variable.
747 envreal = getenv("NASMENV");
750 envcopy = nasm_strdup(envreal);
751 process_args(envcopy);
756 * Now process the actual command line.
761 if (argv[0][0] == '@') {
762 /* We have a response file, so process this as a set of
763 * arguments like the environment variable. This allows us
764 * to have multiple arguments on a single line, which is
765 * different to the -@resp file processing below for regular
768 char *str = malloc(2048);
769 FILE *f = fopen(&argv[0][1], "r");
771 printf("out of memory");
775 while (fgets(str, 2048, f)) {
784 if (!stopoptions && argv[0][0] == '-' && argv[0][1] == '@') {
785 p = get_param(argv[0], argc > 1 ? argv[1] : NULL, &i);
787 rfile = fopen(p, "r");
789 process_respfile(rfile);
792 report_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
793 "unable to open response file `%s'", p);
796 i = process_arg(argv[0], argc > 1 ? argv[1] : NULL);
797 argv += i, argc -= i;
801 report_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
802 "no input file specified");
804 /* Look for basic command line typos. This definitely doesn't
805 catch all errors, but it might help cases of fumbled fingers. */
806 if (!strcmp(inname, errname) || !strcmp(inname, outname) ||
807 !strcmp(inname, listname))
808 report_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
809 "file `%s' is both input and output file",
813 error_file = fopen(errname, "w");
815 error_file = stderr; /* Revert to default! */
816 report_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
817 "cannot open file `%s' for error messages",
823 /* List of directives */
825 D_NONE, D_ABSOLUTE, D_BITS, D_COMMON, D_CPU, D_DEBUG, D_DEFAULT,
826 D_EXTERN, D_FLOAT, D_GLOBAL, D_LIST, D_SECTION, D_SEGMENT, D_WARNING
828 static const char *directives[] = {
829 "", "absolute", "bits", "common", "cpu", "debug", "default",
830 "extern", "float", "global", "list", "section", "segment", "warning"
832 static enum directives getkw(char **directive, char **value);
834 static void assemble_file(char *fname)
836 char *directive, *value, *p, *q, *special, *line, debugid[80];
841 struct tokenval tokval;
844 int pass_cnt = 0; /* count actual passes */
846 if (cmd_sb == 32 && cmd_cpu < IF_386)
847 report_error(ERR_FATAL, "command line: "
848 "32-bit segment size requires a higher cpu");
850 pass_max = (optimizing > 0 ? optimizing : 0) + 2; /* passes 1, optimizing, then 2 */
851 pass0 = !(optimizing > 0); /* start at 1 if not optimizing */
852 for (pass = 1; pass <= pass_max && pass0 <= 2; pass++) {
856 pass1 = pass < pass_max ? 1 : 2; /* seq is 1, 1, 1,..., 1, 2 */
857 pass2 = pass > 1 ? 2 : 1; /* seq is 1, 2, 2,..., 2, 2 */
858 /* pass0 seq is 0, 0, 0,..., 1, 2 */
860 def_label = pass > 1 ? redefine_label : define_label;
862 globalbits = sb = cmd_sb; /* set 'bits' to command line default */
866 nasmlist.init(listname, report_error);
869 global_offset_changed = false; /* set by redefine_label */
870 location.segment = ofmt->section(NULL, pass2, &sb);
873 saa_rewind(forwrefs);
874 forwref = saa_rstruct(forwrefs);
876 offsets = raa_init();
878 preproc->reset(fname, pass1, report_error, evaluate, &nasmlist);
881 location.known = true;
882 location.offset = offs = GET_CURR_OFFS;
884 while ((line = preproc->getline())) {
888 /* here we parse our directives; this is not handled by the 'real'
891 d = getkw(&directive, &value);
896 case D_SEGMENT: /* [SEGMENT n] */
898 seg = ofmt->section(value, pass2, &sb);
900 report_error(pass1 == 1 ? ERR_NONFATAL : ERR_PANIC,
901 "segment name `%s' not recognized",
905 location.segment = seg;
908 case D_EXTERN: /* [EXTERN label:special] */
910 value++; /* skip initial $ if present */
913 while (*q && *q != ':')
917 ofmt->symdef(value, 0L, 0L, 3, q);
919 } else if (pass == 1) { /* pass == 1 */
924 while (*q && *q != ':') {
930 report_error(ERR_NONFATAL,
931 "identifier expected after EXTERN");
939 if (!is_extern(value)) { /* allow re-EXTERN to be ignored */
941 pass0 = 1; /* fake pass 1 in labels.c */
942 declare_as_global(value, special,
944 define_label(value, seg_alloc(), 0L, NULL,
945 false, true, ofmt, report_error);
948 } /* else pass0 == 1 */
950 case D_BITS: /* [BITS bits] */
951 globalbits = sb = get_bits(value);
953 case D_GLOBAL: /* [GLOBAL symbol:special] */
955 value++; /* skip initial $ if present */
956 if (pass0 == 2) { /* pass 2 */
958 while (*q && *q != ':')
962 ofmt->symdef(value, 0L, 0L, 3, q);
964 } else if (pass2 == 1) { /* pass == 1 */
969 while (*q && *q != ':') {
975 report_error(ERR_NONFATAL,
976 "identifier expected after GLOBAL");
984 declare_as_global(value, special, report_error);
987 case D_COMMON: /* [COMMON symbol size:special] */
989 value++; /* skip initial $ if present */
995 while (*p && !isspace(*p)) {
1001 report_error(ERR_NONFATAL,
1002 "identifier expected after COMMON");
1008 while (*p && isspace(*p))
1011 while (*q && *q != ':')
1018 size = readnum(p, &rn_error);
1020 report_error(ERR_NONFATAL,
1021 "invalid size specified"
1022 " in COMMON declaration");
1024 define_common(value, seg_alloc(), size,
1025 special, ofmt, report_error);
1027 report_error(ERR_NONFATAL,
1028 "no size specified in"
1029 " COMMON declaration");
1030 } else if (pass0 == 2) { /* pass == 2 */
1032 while (*q && *q != ':') {
1039 ofmt->symdef(value, 0L, 0L, 3, q);
1043 case D_ABSOLUTE: /* [ABSOLUTE address] */
1045 stdscan_bufptr = value;
1046 tokval.t_type = TOKEN_INVALID;
1047 e = evaluate(stdscan, NULL, &tokval, NULL, pass2,
1048 report_error, NULL);
1051 report_error(pass0 ==
1052 1 ? ERR_NONFATAL : ERR_PANIC,
1053 "cannot use non-relocatable expression as "
1054 "ABSOLUTE address");
1056 abs_seg = reloc_seg(e);
1057 abs_offset = reloc_value(e);
1059 } else if (pass == 1)
1060 abs_offset = 0x100; /* don't go near zero in case of / */
1062 report_error(ERR_PANIC, "invalid ABSOLUTE address "
1065 location.segment = NO_SEG;
1067 case D_DEBUG: /* [DEBUG] */
1073 while (*p && !isspace(*p)) {
1080 report_error(pass == 1 ? ERR_NONFATAL : ERR_PANIC,
1081 "identifier expected after DEBUG");
1084 while (*p && isspace(*p))
1086 if (pass == pass_max)
1087 ofmt->current_dfmt->debug_directive(debugid, p);
1089 case D_WARNING: /* [WARNING {+|-}warn-name] */
1091 while (*value && isspace(*value))
1094 if (*value == '+' || *value == '-') {
1095 validid = (*value == '-') ? true : false;
1100 for (i = 1; i <= ERR_WARN_MAX; i++)
1101 if (!nasm_stricmp(value, suppressed_names[i]))
1103 if (i <= ERR_WARN_MAX)
1104 suppressed[i] = validid;
1106 report_error(ERR_NONFATAL,
1107 "invalid warning id in WARNING directive");
1110 case D_CPU: /* [CPU] */
1111 cpu = get_cpu(value);
1113 case D_LIST: /* [LIST {+|-}] */
1114 while (*value && isspace(*value))
1117 if (*value == '+') {
1120 if (*value == '-') {
1127 case D_DEFAULT: /* [DEFAULT] */
1129 stdscan_bufptr = value;
1130 tokval.t_type = TOKEN_INVALID;
1131 if (stdscan(NULL, &tokval) == TOKEN_SPECIAL) {
1132 switch ((int)tokval.t_integer) {
1148 if (float_option(value)) {
1149 report_error(pass1 == 1 ? ERR_NONFATAL : ERR_PANIC,
1150 "unknown 'float' directive: %s",
1155 if (!ofmt->directive(directive, value, pass2))
1156 report_error(pass1 == 1 ? ERR_NONFATAL : ERR_PANIC,
1157 "unrecognised directive [%s]",
1161 report_error(ERR_NONFATAL,
1162 "invalid parameter to [%s] directive",
1165 } else { /* it isn't a directive */
1167 parse_line(pass1, line, &output_ins,
1168 report_error, evaluate, def_label);
1170 if (!(optimizing > 0) && pass == 2) {
1171 if (forwref != NULL && globallineno == forwref->lineno) {
1172 output_ins.forw_ref = true;
1174 output_ins.oprs[forwref->operand].opflags |=
1176 forwref = saa_rstruct(forwrefs);
1177 } while (forwref != NULL
1178 && forwref->lineno == globallineno);
1180 output_ins.forw_ref = false;
1183 if (!(optimizing > 0) && output_ins.forw_ref) {
1185 for (i = 0; i < output_ins.operands; i++) {
1186 if (output_ins.oprs[i].
1187 opflags & OPFLAG_FORWARD) {
1188 struct forwrefinfo *fwinf =
1189 (struct forwrefinfo *)
1190 saa_wstruct(forwrefs);
1191 fwinf->lineno = globallineno;
1195 } else { /* pass == 2 */
1197 * Hack to prevent phase error in the code
1201 * If the second operand is a forward reference,
1202 * the UNITY property of the number 1 in that
1203 * operand is cancelled. Otherwise the above
1204 * sequence will cause a phase error.
1206 * This hack means that the above code will
1207 * generate 286+ code.
1209 * The forward reference will mean that the
1210 * operand will not have the UNITY property on
1211 * the first pass, so the pass behaviours will
1215 if (output_ins.operands >= 2 &&
1216 (output_ins.oprs[1].opflags & OPFLAG_FORWARD) &&
1217 !(IMMEDIATE & ~output_ins.oprs[1].type))
1219 /* Remove special properties bits */
1220 output_ins.oprs[1].type &= ~REG_SMASK;
1228 if (output_ins.opcode == I_EQU) {
1231 * Special `..' EQUs get processed in pass two,
1232 * except `..@' macro-processor EQUs which are done
1233 * in the normal place.
1235 if (!output_ins.label)
1236 report_error(ERR_NONFATAL,
1237 "EQU not preceded by label");
1239 else if (output_ins.label[0] != '.' ||
1240 output_ins.label[1] != '.' ||
1241 output_ins.label[2] == '@') {
1242 if (output_ins.operands == 1 &&
1243 (output_ins.oprs[0].type & IMMEDIATE) &&
1244 output_ins.oprs[0].wrt == NO_SEG) {
1247 opflags & OPFLAG_EXTERN;
1248 def_label(output_ins.label,
1249 output_ins.oprs[0].segment,
1250 output_ins.oprs[0].offset, NULL,
1253 } else if (output_ins.operands == 2
1254 && (output_ins.oprs[0].
1256 && (output_ins.oprs[0].type & COLON)
1257 && output_ins.oprs[0].segment ==
1259 && output_ins.oprs[0].wrt == NO_SEG
1260 && (output_ins.oprs[1].
1262 && output_ins.oprs[1].segment ==
1264 && output_ins.oprs[1].wrt ==
1266 def_label(output_ins.label,
1269 output_ins.oprs[1].offset, NULL,
1273 report_error(ERR_NONFATAL,
1274 "bad syntax for EQU");
1276 } else { /* pass == 2 */
1278 * Special `..' EQUs get processed here, except
1279 * `..@' macro processor EQUs which are done above.
1281 if (output_ins.label[0] == '.' &&
1282 output_ins.label[1] == '.' &&
1283 output_ins.label[2] != '@') {
1284 if (output_ins.operands == 1 &&
1285 (output_ins.oprs[0].type & IMMEDIATE)) {
1286 define_label(output_ins.label,
1287 output_ins.oprs[0].segment,
1288 output_ins.oprs[0].offset,
1289 NULL, false, false, ofmt,
1291 } else if (output_ins.operands == 2
1292 && (output_ins.oprs[0].
1294 && (output_ins.oprs[0].type & COLON)
1295 && output_ins.oprs[0].segment ==
1297 && (output_ins.oprs[1].
1299 && output_ins.oprs[1].segment ==
1301 define_label(output_ins.label,
1304 output_ins.oprs[1].offset,
1305 NULL, false, false, ofmt,
1308 report_error(ERR_NONFATAL,
1309 "bad syntax for EQU");
1312 } else { /* instruction isn't an EQU */
1316 int32_t l = insn_size(location.segment, offs, sb, cpu,
1317 &output_ins, report_error);
1319 /* if (using_debug_info) && output_ins.opcode != -1) */
1320 if (using_debug_info)
1321 { /* fbk 03/25/01 */
1322 /* this is done here so we can do debug type info */
1324 TYS_ELEMENTS(output_ins.operands);
1325 switch (output_ins.opcode) {
1328 TYS_ELEMENTS(output_ins.oprs[0].
1333 TYS_ELEMENTS(output_ins.oprs[0].
1338 TYS_ELEMENTS(output_ins.oprs[0].
1343 TYS_ELEMENTS(output_ins.oprs[0].
1348 TYS_ELEMENTS(output_ins.oprs[0].
1352 typeinfo |= TY_BYTE;
1355 typeinfo |= TY_WORD;
1358 if (output_ins.eops_float)
1359 typeinfo |= TY_FLOAT;
1361 typeinfo |= TY_DWORD;
1364 typeinfo |= TY_QWORD;
1367 typeinfo |= TY_TBYTE;
1370 typeinfo |= TY_OWORD;
1373 typeinfo = TY_LABEL;
1377 ofmt->current_dfmt->debug_typevalue(typeinfo);
1382 SET_CURR_OFFS(offs);
1385 * else l == -1 => invalid instruction, which will be
1386 * flagged as an error on pass 2
1389 } else { /* pass == 2 */
1390 offs += assemble(location.segment, offs, sb, cpu,
1391 &output_ins, ofmt, report_error,
1393 SET_CURR_OFFS(offs);
1397 cleanup_insn(&output_ins);
1400 location.offset = offs = GET_CURR_OFFS;
1401 } /* end while (line = preproc->getline... */
1403 if (pass1 == 2 && global_offset_changed)
1404 report_error(ERR_NONFATAL,
1405 "phase error detected at end of assembly.");
1408 preproc->cleanup(1);
1410 if (pass1 == 1 && terminate_after_phase) {
1418 if (pass > 1 && !global_offset_changed) {
1421 pass = pass_max - 1;
1422 } else if (!(optimizing > 0))
1425 } /* for (pass=1; pass<=2; pass++) */
1427 preproc->cleanup(0);
1430 if (optimizing > 0 && opt_verbose_info) /* -On and -Ov switches */
1432 "info:: assembly required 1+%d+1 passes\n", pass_cnt - 2);
1434 } /* exit from assemble_file (...) */
1436 static enum directives getkw(char **directive, char **value)
1442 /* allow leading spaces or tabs */
1443 while (*buf == ' ' || *buf == '\t')
1451 while (*p && *p != ']')
1459 while (*p && *p != ';') {
1466 *directive = p = buf + 1;
1467 while (*buf && *buf != ' ' && *buf != ']' && *buf != '\t')
1474 while (isspace(*buf))
1475 buf++; /* beppu - skip leading whitespace */
1482 return bsii(*directive, directives, elements(directives));
1486 * gnu style error reporting
1487 * This function prints an error message to error_file in the
1488 * style used by GNU. An example would be:
1489 * file.asm:50: error: blah blah blah
1490 * where file.asm is the name of the file, 50 is the line number on
1491 * which the error occurs (or is detected) and "error:" is one of
1492 * the possible optional diagnostics -- it can be "error" or "warning"
1493 * or something else. Finally the line terminates with the actual
1496 * @param severity the severity of the warning or error
1497 * @param fmt the printf style format string
1499 static void report_error_gnu(int severity, const char *fmt, ...)
1503 if (is_suppressed_warning(severity))
1506 if (severity & ERR_NOFILE)
1507 fputs("nasm: ", error_file);
1509 char *currentfile = NULL;
1511 src_get(&lineno, ¤tfile);
1512 fprintf(error_file, "%s:%"PRId32": ", currentfile, lineno);
1513 nasm_free(currentfile);
1516 report_error_common(severity, fmt, ap);
1521 * MS style error reporting
1522 * This function prints an error message to error_file in the
1523 * style used by Visual C and some other Microsoft tools. An example
1525 * file.asm(50) : error: blah blah blah
1526 * where file.asm is the name of the file, 50 is the line number on
1527 * which the error occurs (or is detected) and "error:" is one of
1528 * the possible optional diagnostics -- it can be "error" or "warning"
1529 * or something else. Finally the line terminates with the actual
1532 * @param severity the severity of the warning or error
1533 * @param fmt the printf style format string
1535 static void report_error_vc(int severity, const char *fmt, ...)
1539 if (is_suppressed_warning(severity))
1542 if (severity & ERR_NOFILE)
1543 fputs("nasm: ", error_file);
1545 char *currentfile = NULL;
1547 src_get(&lineno, ¤tfile);
1548 fprintf(error_file, "%s(%"PRId32") : ", currentfile, lineno);
1549 nasm_free(currentfile);
1552 report_error_common(severity, fmt, ap);
1557 * check for supressed warning
1558 * checks for suppressed warning or pass one only warning and we're
1561 * @param severity the severity of the warning or error
1562 * @return true if we should abort error/warning printing
1564 static int is_suppressed_warning(int severity)
1567 * See if it's a suppressed warning.
1569 return ((severity & ERR_MASK) == ERR_WARNING &&
1570 (severity & ERR_WARN_MASK) != 0 &&
1571 suppressed[(severity & ERR_WARN_MASK) >> ERR_WARN_SHR]) ||
1573 * See if it's a pass-one only warning and we're not in pass one.
1575 ((severity & ERR_PASS1) && pass0 == 2);
1579 * common error reporting
1580 * This is the common back end of the error reporting schemes currently
1581 * implemented. It prints the nature of the warning and then the
1582 * specific error message to error_file and may or may not return. It
1583 * doesn't return if the error severity is a "panic" or "debug" type.
1585 * @param severity the severity of the warning or error
1586 * @param fmt the printf style format string
1588 static void report_error_common(int severity, const char *fmt,
1591 switch (severity & ERR_MASK) {
1593 fputs("warning: ", error_file);
1596 fputs("error: ", error_file);
1599 fputs("fatal: ", error_file);
1602 fputs("panic: ", error_file);
1605 fputs("debug: ", error_file);
1609 vfprintf(error_file, fmt, args);
1610 fputc('\n', error_file);
1612 if (severity & ERR_USAGE)
1615 switch (severity & ERR_MASK) {
1618 /* no further action, by definition */
1621 /* hack enables listing(!) on errors */
1622 terminate_after_phase = true;
1631 exit(1); /* instantly die */
1632 break; /* placate silly compilers */
1635 /* abort(); *//* halt, catch fire, and dump core */
1641 static void usage(void)
1643 fputs("type `nasm -h' for help\n", error_file);
1646 static void register_output_formats(void)
1648 ofmt = ofmt_register(report_error);
1651 #define BUF_DELTA 512
1653 static FILE *no_pp_fp;
1654 static efunc no_pp_err;
1655 static ListGen *no_pp_list;
1656 static int32_t no_pp_lineinc;
1658 static void no_pp_reset(char *file, int pass, efunc error, evalfunc eval,
1661 src_set_fname(nasm_strdup(file));
1665 no_pp_fp = fopen(file, "r");
1667 no_pp_err(ERR_FATAL | ERR_NOFILE,
1668 "unable to open input file `%s'", file);
1669 no_pp_list = listgen;
1670 (void)pass; /* placate compilers */
1671 (void)eval; /* placate compilers */
1674 static char *no_pp_getline(void)
1676 char *buffer, *p, *q;
1679 bufsize = BUF_DELTA;
1680 buffer = nasm_malloc(BUF_DELTA);
1681 src_set_linnum(src_get_linnum() + no_pp_lineinc);
1683 while (1) { /* Loop to handle %line */
1686 while (1) { /* Loop to handle long lines */
1687 q = fgets(p, bufsize - (p - buffer), no_pp_fp);
1691 if (p > buffer && p[-1] == '\n')
1693 if (p - buffer > bufsize - 10) {
1695 offset = p - buffer;
1696 bufsize += BUF_DELTA;
1697 buffer = nasm_realloc(buffer, bufsize);
1698 p = buffer + offset;
1702 if (!q && p == buffer) {
1708 * Play safe: remove CRs, LFs and any spurious ^Zs, if any of
1709 * them are present at the end of the line.
1711 buffer[strcspn(buffer, "\r\n\032")] = '\0';
1713 if (!nasm_strnicmp(buffer, "%line", 5)) {
1716 char *nm = nasm_malloc(strlen(buffer));
1717 if (sscanf(buffer + 5, "%"PRId32"+%d %s", &ln, &li, nm) == 3) {
1718 nasm_free(src_set_fname(nm));
1728 no_pp_list->line(LIST_READ, buffer);
1733 static void no_pp_cleanup(int pass)
1735 (void)pass; /* placate GCC */
1739 static uint32_t get_cpu(char *value)
1741 if (!strcmp(value, "8086"))
1743 if (!strcmp(value, "186"))
1745 if (!strcmp(value, "286"))
1747 if (!strcmp(value, "386"))
1749 if (!strcmp(value, "486"))
1751 if (!strcmp(value, "586") || !nasm_stricmp(value, "pentium"))
1753 if (!strcmp(value, "686") ||
1754 !nasm_stricmp(value, "ppro") ||
1755 !nasm_stricmp(value, "pentiumpro") || !nasm_stricmp(value, "p2"))
1757 if (!nasm_stricmp(value, "p3") || !nasm_stricmp(value, "katmai"))
1759 if (!nasm_stricmp(value, "p4") || /* is this right? -- jrc */
1760 !nasm_stricmp(value, "willamette"))
1761 return IF_WILLAMETTE;
1762 if (!nasm_stricmp(value, "prescott"))
1764 if (!nasm_stricmp(value, "x64") ||
1765 !nasm_stricmp(value, "x86-64"))
1767 if (!nasm_stricmp(value, "ia64") ||
1768 !nasm_stricmp(value, "ia-64") ||
1769 !nasm_stricmp(value, "itanium") ||
1770 !nasm_stricmp(value, "itanic") || !nasm_stricmp(value, "merced"))
1773 report_error(pass0 < 2 ? ERR_NONFATAL : ERR_FATAL,
1774 "unknown 'cpu' type");
1776 return IF_PLEVEL; /* the maximum level */
1779 static int get_bits(char *value)
1783 if ((i = atoi(value)) == 16)
1784 return i; /* set for a 16-bit segment */
1787 report_error(ERR_NONFATAL,
1788 "cannot specify 32-bit segment on processor below a 386");
1791 } else if (i == 64) {
1792 if (cpu < IF_X86_64) {
1793 report_error(ERR_NONFATAL,
1794 "cannot specify 64-bit segment on processor below an x86-64");
1798 report_error(ERR_NONFATAL,
1799 "%s output format does not support 64-bit code",
1804 report_error(pass0 < 2 ? ERR_NONFATAL : ERR_FATAL,
1805 "`%s' is not a valid segment size; must be 16, 32 or 64",