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 license given in the file "LICENSE"
6 * distributed in the NASM archive.
35 struct forwrefinfo { /* info held on forward refs. */
40 static int get_bits(char *value);
41 static uint32_t get_cpu(char *cpu_str);
42 static void parse_cmdline(int, char **);
43 static void assemble_file(char *, StrList **);
44 static void register_output_formats(void);
45 static void report_error_gnu(int severity, const char *fmt, ...);
46 static void report_error_vc(int severity, const char *fmt, ...);
47 static void report_error_common(int severity, const char *fmt,
49 static bool is_suppressed_warning(int severity);
50 static void usage(void);
51 static efunc report_error;
53 static int using_debug_info, opt_verbose_info;
54 bool tasm_compatible_mode = false;
59 time_t official_compile_time;
61 static char inname[FILENAME_MAX];
62 static char outname[FILENAME_MAX];
63 static char listname[FILENAME_MAX];
64 static char errname[FILENAME_MAX];
65 static int globallineno; /* for forward-reference tracking */
66 /* static int pass = 0; */
67 static struct ofmt *ofmt = NULL;
69 static FILE *error_file; /* Where to write error messages */
71 static FILE *ofile = NULL;
72 int optimizing = -1; /* number of optimization passes to take */
73 static int sb, cmd_sb = 16; /* by default */
74 static uint32_t cmd_cpu = IF_PLEVEL; /* highest level by default */
75 static uint32_t cpu = IF_PLEVEL; /* passed to insn_size & assemble.c */
76 int64_t global_offset_changed; /* referenced in labels.c */
77 int64_t prev_offset_changed;
80 static struct location location;
81 int in_abs_seg; /* Flag we are in ABSOLUTE seg */
82 int32_t abs_seg; /* ABSOLUTE segment basis */
83 int32_t abs_offset; /* ABSOLUTE offset */
85 static struct RAA *offsets;
87 static struct SAA *forwrefs; /* keep track of forward references */
88 static const struct forwrefinfo *forwref;
90 static Preproc *preproc;
92 op_normal, /* Preprocess and assemble */
93 op_preprocess, /* Preprocess only */
94 op_depend, /* Generate dependencies */
96 static enum op_type operating_mode;
97 /* Dependency flags */
98 static bool depend_emit_phony = false;
99 static bool depend_missing_ok = false;
100 static const char *depend_target = NULL;
101 static const char *depend_file = NULL;
104 * Which of the suppressible warnings are suppressed. Entry zero
105 * isn't an actual warning, but it used for -w+error/-Werror.
108 static bool warning_on[ERR_WARN_MAX+1]; /* Current state */
109 static bool warning_on_global[ERR_WARN_MAX+1]; /* Command-line state */
111 static const struct warning {
115 } warnings[ERR_WARN_MAX+1] = {
116 {"error", "treat warnings as errors", false},
117 {"macro-params", "macro calls with wrong parameter count", true},
118 {"macro-selfref", "cyclic macro references", false},
119 {"macro-defaults", "macros with more default than optional parameters", true},
120 {"orphan-labels", "labels alone on lines without trailing `:'", true},
121 {"number-overflow", "numeric constant does not fit", true},
122 {"gnu-elf-extensions", "using 8- or 16-bit relocation in ELF32, a GNU extension", false},
123 {"float-overflow", "floating point overflow", true},
124 {"float-denorm", "floating point denormal", false},
125 {"float-underflow", "floating point underflow", false},
126 {"float-toolong", "too many digits in floating-point number", true},
127 {"user", "%warning directives", true},
131 * This is a null preprocessor which just copies lines from input
132 * to output. It's used when someone explicitly requests that NASM
133 * not preprocess their source file.
136 static void no_pp_reset(char *, int, efunc, evalfunc, ListGen *, StrList **);
137 static char *no_pp_getline(void);
138 static void no_pp_cleanup(int);
139 static Preproc no_pp = {
146 * get/set current offset...
148 #define GET_CURR_OFFS (in_abs_seg?abs_offset:\
149 raa_read(offsets,location.segment))
150 #define SET_CURR_OFFS(x) (in_abs_seg?(void)(abs_offset=(x)):\
151 (void)(offsets=raa_write(offsets,location.segment,(x))))
153 static bool want_usage;
154 static bool terminate_after_phase;
155 int user_nolist = 0; /* fbk 9/2/00 */
157 static void nasm_fputs(const char *line, FILE * outfile)
160 fputs(line, outfile);
166 /* Convert a struct tm to a POSIX-style time constant */
167 static int64_t posix_mktime(struct tm *tm)
170 int64_t y = tm->tm_year;
172 /* See IEEE 1003.1:2004, section 4.14 */
174 t = (y-70)*365 + (y-69)/4 - (y-1)/100 + (y+299)/400;
186 static void define_macros_early(void)
189 struct tm lt, *lt_p, gm, *gm_p;
192 lt_p = localtime(&official_compile_time);
196 strftime(temp, sizeof temp, "__DATE__=\"%Y-%m-%d\"", <);
198 strftime(temp, sizeof temp, "__DATE_NUM__=%Y%m%d", <);
200 strftime(temp, sizeof temp, "__TIME__=\"%H:%M:%S\"", <);
202 strftime(temp, sizeof temp, "__TIME_NUM__=%H%M%S", <);
206 gm_p = gmtime(&official_compile_time);
210 strftime(temp, sizeof temp, "__UTC_DATE__=\"%Y-%m-%d\"", &gm);
212 strftime(temp, sizeof temp, "__UTC_DATE_NUM__=%Y%m%d", &gm);
214 strftime(temp, sizeof temp, "__UTC_TIME__=\"%H:%M:%S\"", &gm);
216 strftime(temp, sizeof temp, "__UTC_TIME_NUM__=%H%M%S", &gm);
221 posix_time = posix_mktime(&gm);
223 posix_time = posix_mktime(<);
228 snprintf(temp, sizeof temp, "__POSIX_TIME__=%"PRId64, posix_time);
233 static void define_macros_late(void)
237 snprintf(temp, sizeof(temp), "__OUTPUT_FORMAT__=%s\n",
242 static void emit_dependencies(StrList *list)
248 if (depend_file && strcmp(depend_file, "-")) {
249 deps = fopen(depend_file, "w");
251 report_error(ERR_NONFATAL|ERR_NOFILE|ERR_USAGE,
252 "unable to write dependency file `%s'", depend_file);
259 linepos = fprintf(deps, "%s:", depend_target);
260 for (l = list; l; l = l->next) {
261 len = strlen(l->str);
262 if (linepos + len > 62) {
263 fprintf(deps, " \\\n ");
266 fprintf(deps, " %s", l->str);
269 fprintf(deps, "\n\n");
271 for (l = list; l; l = nl) {
272 if (depend_emit_phony)
273 fprintf(deps, "%s:\n\n", l->str);
283 int main(int argc, char **argv)
285 StrList *depend_list = NULL, **depend_ptr;
287 time(&official_compile_time);
290 want_usage = terminate_after_phase = false;
291 report_error = report_error_gnu;
297 nasm_set_malloc_error(report_error);
298 offsets = raa_init();
299 forwrefs = saa_init((int32_t)sizeof(struct forwrefinfo));
302 operating_mode = op_normal;
306 register_output_formats();
308 /* Define some macros dependent on the runtime, but not
309 on the command line. */
310 define_macros_early();
312 parse_cmdline(argc, argv);
314 if (terminate_after_phase) {
320 /* If debugging info is disabled, suppress any debug calls */
321 if (!using_debug_info)
322 ofmt->current_dfmt = &null_debug_form;
325 pp_extra_stdmac(ofmt->stdmac);
326 parser_global_info(ofmt, &location);
327 eval_global_info(ofmt, lookup_label, &location);
329 /* define some macros dependent of command-line */
330 define_macros_late();
332 depend_ptr = (depend_file || (operating_mode == op_depend))
333 ? &depend_list : NULL;
335 depend_target = outname;
337 switch (operating_mode) {
342 if (depend_missing_ok)
343 pp_include_path(NULL); /* "assume generated" */
345 preproc->reset(inname, 0, report_error, evaluate, &nasmlist,
347 if (outname[0] == '\0')
348 ofmt->filename(inname, outname, report_error);
350 while ((line = preproc->getline()))
359 char *file_name = NULL;
360 int32_t prior_linnum = 0;
364 ofile = fopen(outname, "w");
366 report_error(ERR_FATAL | ERR_NOFILE,
367 "unable to open output file `%s'",
372 location.known = false;
375 preproc->reset(inname, 3, report_error, evaluate, &nasmlist,
378 while ((line = preproc->getline())) {
380 * We generate %line directives if needed for later programs
382 int32_t linnum = prior_linnum += lineinc;
383 int altline = src_get(&linnum, &file_name);
385 if (altline == 1 && lineinc == 1)
386 nasm_fputs("", ofile);
388 lineinc = (altline != -1 || lineinc != 1);
389 fprintf(ofile ? ofile : stdout,
390 "%%line %"PRId32"+%d %s\n", linnum, lineinc,
393 prior_linnum = linnum;
395 nasm_fputs(line, ofile);
398 nasm_free(file_name);
402 if (ofile && terminate_after_phase)
410 * We must call ofmt->filename _anyway_, even if the user
411 * has specified their own output file, because some
412 * formats (eg OBJ and COFF) use ofmt->filename to find out
413 * the name of the input file and then put that inside the
416 ofmt->filename(inname, outname, report_error);
418 ofile = fopen(outname, "wb");
420 report_error(ERR_FATAL | ERR_NOFILE,
421 "unable to open output file `%s'", outname);
425 * We must call init_labels() before ofmt->init() since
426 * some object formats will want to define labels in their
427 * init routines. (eg OS/2 defines the FLAT group)
431 ofmt->init(ofile, report_error, define_label, evaluate);
433 assemble_file(inname, depend_ptr);
435 if (!terminate_after_phase) {
436 ofmt->cleanup(using_debug_info);
440 * Despite earlier comments, we need this fclose.
441 * The object output drivers only fclose on cleanup,
442 * and we just skipped that.
454 if (depend_list && !terminate_after_phase)
455 emit_dependencies(depend_list);
465 return terminate_after_phase;
469 * Get a parameter for a command line option.
470 * First arg must be in the form of e.g. -f...
472 static char *get_param(char *p, char *q, bool *advance)
475 if (p[2]) { /* the parameter's in the option */
477 while (nasm_isspace(*p))
485 report_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
486 "option `-%c' requires an argument", p[1]);
493 static void copy_filename(char *dst, const char *src)
495 size_t len = strlen(src);
497 if (len >= (size_t)FILENAME_MAX) {
498 report_error(ERR_FATAL | ERR_NOFILE, "file name too long");
501 strncpy(dst, src, FILENAME_MAX);
505 * Convert a string to Make-safe form
507 static char *quote_for_make(const char *str)
512 size_t n = 1; /* Terminating zero */
518 for (p = str; *p; p++) {
522 /* Convert N backslashes + ws -> 2N+1 backslashes + ws */
542 /* Convert N backslashes at the end of filename to 2N backslashes */
546 os = q = nasm_malloc(n);
549 for (p = str; *p; p++) {
592 #define OPT_POSTFIX 1
593 struct textargs textopts[] = {
594 {"prefix", OPT_PREFIX},
595 {"postfix", OPT_POSTFIX},
599 static bool stopoptions = false;
600 static bool process_arg(char *p, char *q)
604 bool advance = false;
610 if (p[0] == '-' && !stopoptions) {
611 if (strchr("oOfpPdDiIlFXuUZwW", p[1])) {
612 /* These parameters take values */
613 if (!(param = get_param(p, q, &advance)))
622 case 'o': /* output file */
623 copy_filename(outname, param);
626 case 'f': /* output format */
627 ofmt = ofmt_find(param);
629 report_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
630 "unrecognised output format `%s' - "
631 "use -hf for a list", param);
635 case 'O': /* Optimization level */
640 /* Naked -O == -Ox */
641 optimizing = INT_MAX >> 1; /* Almost unlimited */
645 case '0': case '1': case '2': case '3': case '4':
646 case '5': case '6': case '7': case '8': case '9':
647 opt = strtoul(param, ¶m, 10);
649 /* -O0 -> optimizing == -1, 0.98 behaviour */
650 /* -O1 -> optimizing == 0, 0.98.09 behaviour */
652 optimizing = opt - 1;
660 opt_verbose_info = true;
665 optimizing = INT_MAX >> 1; /* Almost unlimited */
669 report_error(ERR_FATAL,
670 "unknown optimization option -O%c\n",
679 case 'p': /* pre-include */
681 pp_pre_include(param);
684 case 'd': /* pre-define */
686 pp_pre_define(param);
689 case 'u': /* un-define */
691 pp_pre_undefine(param);
694 case 'i': /* include search path */
696 pp_include_path(param);
699 case 'l': /* listing file */
700 copy_filename(listname, param);
703 case 'Z': /* error messages file */
704 strcpy(errname, param);
707 case 'F': /* specify debug format */
708 ofmt->current_dfmt = dfmt_find(ofmt, param);
709 if (!ofmt->current_dfmt) {
710 report_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
711 "unrecognized debug format `%s' for"
712 " output format `%s'",
713 param, ofmt->shortname);
715 using_debug_info = true;
718 case 'X': /* specify error reporting format */
719 if (nasm_stricmp("vc", param) == 0)
720 report_error = report_error_vc;
721 else if (nasm_stricmp("gnu", param) == 0)
722 report_error = report_error_gnu;
724 report_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
725 "unrecognized error reporting format `%s'",
730 using_debug_info = true;
735 ("usage: nasm [-@ response file] [-o outfile] [-f format] "
737 " [options...] [--] filename\n"
738 " or nasm -v for version info\n\n"
739 " -t assemble in SciTech TASM compatible mode\n"
740 " -g generate debug information in selected format.\n");
742 (" -E (or -e) preprocess only (writes output to stdout by default)\n"
743 " -a don't preprocess (assemble only)\n"
744 " -M generate Makefile dependencies on stdout\n"
745 " -MG d:o, missing files assumed generated\n\n"
746 " -Z<file> redirect error messages to file\n"
747 " -s redirect error messages to stdout\n\n"
748 " -F format select a debugging format\n\n"
749 " -I<path> adds a pathname to the include file path\n");
751 (" -O<digit> optimize branch offsets (-O0 disables, default)\n"
752 " -P<file> pre-includes a file\n"
753 " -D<macro>[=<value>] pre-defines a macro\n"
754 " -U<macro> undefines a macro\n"
755 " -X<format> specifies error reporting format (gnu or vc)\n"
756 " -w+foo enables warning foo (equiv. -Wfoo)\n"
757 " -w-foo disable warning foo (equiv. -Wno-foo)\n"
759 for (i = 0; i <= ERR_WARN_MAX; i++)
760 printf(" %-23s %s (default %s)\n",
761 warnings[i].name, warnings[i].help,
762 warnings[i].enabled ? "on" : "off");
764 ("\nresponse files should contain command line parameters"
765 ", one per line.\n");
767 printf("\nvalid output formats for -f are"
768 " (`*' denotes default):\n");
769 ofmt_list(ofmt, stdout);
771 printf("\nFor a list of valid output formats, use -hf.\n");
772 printf("For a list of debug formats, use -f <form> -y.\n");
774 exit(0); /* never need usage message here */
778 printf("\nvalid debug formats for '%s' output format are"
779 " ('*' denotes default):\n", ofmt->shortname);
780 dfmt_list(ofmt, stdout);
785 tasm_compatible_mode = true;
789 printf("NASM version %s compiled on %s%s\n",
790 nasm_version, nasm_date, nasm_compile_options);
791 exit(0); /* never need usage message here */
794 case 'e': /* preprocess only */
796 operating_mode = op_preprocess;
799 case 'a': /* assemble only - don't preprocess */
804 if (param[0] == 'n' && param[1] == 'o' && param[2] == '-') {
813 if (param[0] != '+' && param[0] != '-') {
814 report_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
815 "invalid option to `-w'");
818 do_warn = (param[0] == '+');
822 for (i = 0; i <= ERR_WARN_MAX; i++)
823 if (!nasm_stricmp(param, warnings[i].name))
825 if (i <= ERR_WARN_MAX)
826 warning_on_global[i] = do_warn;
827 else if (!nasm_stricmp(param, "all"))
828 for (i = 1; i <= ERR_WARN_MAX; i++)
829 warning_on_global[i] = do_warn;
830 else if (!nasm_stricmp(param, "none"))
831 for (i = 1; i <= ERR_WARN_MAX; i++)
832 warning_on_global[i] = !do_warn;
834 report_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
835 "invalid warning `%s'", param);
841 operating_mode = op_depend;
844 operating_mode = op_depend;
845 depend_missing_ok = true;
848 depend_emit_phony = true;
859 depend_target = quote_for_make(q);
863 report_error(ERR_NONFATAL|ERR_NOFILE|ERR_USAGE,
864 "unknown dependency option `-M%c'", p[2]);
867 if (advance && (!q || !q[0])) {
868 report_error(ERR_NONFATAL|ERR_NOFILE|ERR_USAGE,
869 "option `-M%c' requires a parameter", p[2]);
878 if (p[2] == 0) { /* -- => stop processing options */
882 for (s = 0; textopts[s].label; s++) {
883 if (!nasm_stricmp(p + 2, textopts[s].label)) {
894 report_error(ERR_NONFATAL | ERR_NOFILE |
896 "option `--%s' requires an argument",
900 advance = 1, param = q;
903 if (s == OPT_PREFIX) {
904 strncpy(lprefix, param, PREFIX_MAX - 1);
905 lprefix[PREFIX_MAX - 1] = 0;
908 if (s == OPT_POSTFIX) {
909 strncpy(lpostfix, param, POSTFIX_MAX - 1);
910 lpostfix[POSTFIX_MAX - 1] = 0;
917 report_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
918 "unrecognised option `--%s'", p + 2);
926 if (!ofmt->setinfo(GI_SWITCH, &p))
927 report_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
928 "unrecognised option `-%c'", p[1]);
933 report_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
934 "more than one input file specified");
936 copy_filename(inname, p);
943 #define ARG_BUF_DELTA 128
945 static void process_respfile(FILE * rfile)
947 char *buffer, *p, *q, *prevarg;
948 int bufsize, prevargsize;
950 bufsize = prevargsize = ARG_BUF_DELTA;
951 buffer = nasm_malloc(ARG_BUF_DELTA);
952 prevarg = nasm_malloc(ARG_BUF_DELTA);
955 while (1) { /* Loop to handle all lines in file */
957 while (1) { /* Loop to handle long lines */
958 q = fgets(p, bufsize - (p - buffer), rfile);
962 if (p > buffer && p[-1] == '\n')
964 if (p - buffer > bufsize - 10) {
967 bufsize += ARG_BUF_DELTA;
968 buffer = nasm_realloc(buffer, bufsize);
973 if (!q && p == buffer) {
975 process_arg(prevarg, NULL);
982 * Play safe: remove CRs, LFs and any spurious ^Zs, if any of
983 * them are present at the end of the line.
985 *(p = &buffer[strcspn(buffer, "\r\n\032")]) = '\0';
987 while (p > buffer && nasm_isspace(p[-1]))
991 while (nasm_isspace(*p))
994 if (process_arg(prevarg, p))
997 if ((int) strlen(p) > prevargsize - 10) {
998 prevargsize += ARG_BUF_DELTA;
999 prevarg = nasm_realloc(prevarg, prevargsize);
1001 strncpy(prevarg, p, prevargsize);
1005 /* Function to process args from a string of args, rather than the
1006 * argv array. Used by the environment variable and response file
1009 static void process_args(char *args)
1011 char *p, *q, *arg, *prevarg;
1012 char separator = ' ';
1015 if (*p && *p != '-')
1020 while (*p && *p != separator)
1022 while (*p == separator)
1026 if (process_arg(prevarg, arg))
1030 process_arg(arg, NULL);
1033 static void process_response_file(const char *file)
1036 FILE *f = fopen(file, "r");
1041 while (fgets(str, sizeof str, f)) {
1047 static void parse_cmdline(int argc, char **argv)
1050 char *envreal, *envcopy = NULL, *p, *arg;
1053 *inname = *outname = *listname = *errname = '\0';
1054 for (i = 0; i <= ERR_WARN_MAX; i++)
1055 warning_on_global[i] = warnings[i].enabled;
1058 * First, process the NASMENV environment variable.
1060 envreal = getenv("NASMENV");
1063 envcopy = nasm_strdup(envreal);
1064 process_args(envcopy);
1069 * Now process the actual command line.
1074 if (argv[0][0] == '@') {
1075 /* We have a response file, so process this as a set of
1076 * arguments like the environment variable. This allows us
1077 * to have multiple arguments on a single line, which is
1078 * different to the -@resp file processing below for regular
1081 process_response_file(argv[0]+1);
1085 if (!stopoptions && argv[0][0] == '-' && argv[0][1] == '@') {
1086 p = get_param(argv[0], argc > 1 ? argv[1] : NULL, &advance);
1088 rfile = fopen(p, "r");
1090 process_respfile(rfile);
1093 report_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
1094 "unable to open response file `%s'", p);
1097 advance = process_arg(argv[0], argc > 1 ? argv[1] : NULL);
1098 argv += advance, argc -= advance;
1101 /* Look for basic command line typos. This definitely doesn't
1102 catch all errors, but it might help cases of fumbled fingers. */
1104 report_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
1105 "no input file specified");
1106 else if (!strcmp(inname, errname) ||
1107 !strcmp(inname, outname) ||
1108 !strcmp(inname, listname) ||
1109 (depend_file && !strcmp(inname, depend_file)))
1110 report_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
1111 "file `%s' is both input and output file",
1115 error_file = fopen(errname, "w");
1117 error_file = stderr; /* Revert to default! */
1118 report_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
1119 "cannot open file `%s' for error messages",
1125 /* List of directives */
1127 D_NONE, D_ABSOLUTE, D_BITS, D_COMMON, D_CPU, D_DEBUG, D_DEFAULT,
1128 D_EXTERN, D_FLOAT, D_GLOBAL, D_LIST, D_SECTION, D_SEGMENT, D_WARNING
1130 static const char *directives[] = {
1131 "", "absolute", "bits", "common", "cpu", "debug", "default",
1132 "extern", "float", "global", "list", "section", "segment", "warning"
1134 static enum directives getkw(char **directive, char **value);
1136 static void assemble_file(char *fname, StrList **depend_ptr)
1138 char *directive, *value, *p, *q, *special, *line, debugid[80];
1144 struct tokenval tokval;
1148 if (cmd_sb == 32 && cmd_cpu < IF_386)
1149 report_error(ERR_FATAL, "command line: "
1150 "32-bit segment size requires a higher cpu");
1152 pass_max = prev_offset_changed = (INT_MAX >> 1) + 2; /* Almost unlimited */
1153 for (passn = 1; pass0 <= 2; passn++) {
1157 pass1 = pass0 == 2 ? 2 : 1; /* 1, 1, 1, ..., 1, 2 */
1158 pass2 = passn > 1 ? 2 : 1; /* 1, 2, 2, ..., 2, 2 */
1159 /* pass0 0, 0, 0, ..., 1, 2 */
1161 def_label = passn > 1 ? redefine_label : define_label;
1163 globalbits = sb = cmd_sb; /* set 'bits' to command line default */
1167 nasmlist.init(listname, report_error);
1170 global_offset_changed = 0; /* set by redefine_label */
1171 location.segment = ofmt->section(NULL, pass2, &sb);
1174 saa_rewind(forwrefs);
1175 forwref = saa_rstruct(forwrefs);
1177 offsets = raa_init();
1179 preproc->reset(fname, pass1, report_error, evaluate, &nasmlist,
1180 pass1 == 2 ? depend_ptr : NULL);
1181 memcpy(warning_on, warning_on_global, (ERR_WARN_MAX+1) * sizeof(bool));
1185 location.known = true;
1186 location.offset = offs = GET_CURR_OFFS;
1188 while ((line = preproc->getline())) {
1192 /* here we parse our directives; this is not handled by the 'real'
1195 d = getkw(&directive, &value);
1200 case D_SEGMENT: /* [SEGMENT n] */
1202 seg = ofmt->section(value, pass2, &sb);
1203 if (seg == NO_SEG) {
1204 report_error(pass1 == 1 ? ERR_NONFATAL : ERR_PANIC,
1205 "segment name `%s' not recognized",
1209 location.segment = seg;
1212 case D_EXTERN: /* [EXTERN label:special] */
1214 value++; /* skip initial $ if present */
1217 while (*q && *q != ':')
1221 ofmt->symdef(value, 0L, 0L, 3, q);
1223 } else if (passn == 1) {
1228 while (*q && *q != ':') {
1234 report_error(ERR_NONFATAL,
1235 "identifier expected after EXTERN");
1243 if (!is_extern(value)) { /* allow re-EXTERN to be ignored */
1245 pass0 = 1; /* fake pass 1 in labels.c */
1246 declare_as_global(value, special,
1248 define_label(value, seg_alloc(), 0L, NULL,
1249 false, true, ofmt, report_error);
1252 } /* else pass0 == 1 */
1254 case D_BITS: /* [BITS bits] */
1255 globalbits = sb = get_bits(value);
1257 case D_GLOBAL: /* [GLOBAL symbol:special] */
1259 value++; /* skip initial $ if present */
1260 if (pass0 == 2) { /* pass 2 */
1262 while (*q && *q != ':')
1266 ofmt->symdef(value, 0L, 0L, 3, q);
1268 } else if (pass2 == 1) { /* pass == 1 */
1273 while (*q && *q != ':') {
1279 report_error(ERR_NONFATAL,
1280 "identifier expected after GLOBAL");
1288 declare_as_global(value, special, report_error);
1291 case D_COMMON: /* [COMMON symbol size:special] */
1293 value++; /* skip initial $ if present */
1299 while (*p && !nasm_isspace(*p)) {
1305 report_error(ERR_NONFATAL,
1306 "identifier expected after COMMON");
1312 while (*p && nasm_isspace(*p))
1315 while (*q && *q != ':')
1322 size = readnum(p, &rn_error);
1324 report_error(ERR_NONFATAL,
1325 "invalid size specified"
1326 " in COMMON declaration");
1328 define_common(value, seg_alloc(), size,
1329 special, ofmt, report_error);
1331 report_error(ERR_NONFATAL,
1332 "no size specified in"
1333 " COMMON declaration");
1334 } else if (pass0 == 2) { /* pass == 2 */
1336 while (*q && *q != ':') {
1337 if (nasm_isspace(*q))
1343 ofmt->symdef(value, 0L, 0L, 3, q);
1347 case D_ABSOLUTE: /* [ABSOLUTE address] */
1349 stdscan_bufptr = value;
1350 tokval.t_type = TOKEN_INVALID;
1351 e = evaluate(stdscan, NULL, &tokval, NULL, pass2,
1352 report_error, NULL);
1355 report_error(pass0 ==
1356 1 ? ERR_NONFATAL : ERR_PANIC,
1357 "cannot use non-relocatable expression as "
1358 "ABSOLUTE address");
1360 abs_seg = reloc_seg(e);
1361 abs_offset = reloc_value(e);
1363 } else if (passn == 1)
1364 abs_offset = 0x100; /* don't go near zero in case of / */
1366 report_error(ERR_PANIC, "invalid ABSOLUTE address "
1369 location.segment = NO_SEG;
1371 case D_DEBUG: /* [DEBUG] */
1377 while (*p && !nasm_isspace(*p)) {
1384 report_error(passn == 1 ? ERR_NONFATAL : ERR_PANIC,
1385 "identifier expected after DEBUG");
1388 while (*p && nasm_isspace(*p))
1391 ofmt->current_dfmt->debug_directive(debugid, p);
1393 case D_WARNING: /* [WARNING {+|-|*}warn-name] */
1394 while (*value && nasm_isspace(*value))
1398 case '-': validid = 0; value++; break;
1399 case '+': validid = 1; value++; break;
1400 case '*': validid = 2; value++; break;
1401 default: validid = 1; break;
1404 for (i = 1; i <= ERR_WARN_MAX; i++)
1405 if (!nasm_stricmp(value, warnings[i].name))
1407 if (i <= ERR_WARN_MAX) {
1410 warning_on[i] = false;
1413 warning_on[i] = true;
1416 warning_on[i] = warning_on_global[i];
1421 report_error(ERR_NONFATAL,
1422 "invalid warning id in WARNING directive");
1424 case D_CPU: /* [CPU] */
1425 cpu = get_cpu(value);
1427 case D_LIST: /* [LIST {+|-}] */
1428 while (*value && nasm_isspace(*value))
1431 if (*value == '+') {
1434 if (*value == '-') {
1441 case D_DEFAULT: /* [DEFAULT] */
1443 stdscan_bufptr = value;
1444 tokval.t_type = TOKEN_INVALID;
1445 if (stdscan(NULL, &tokval) == TOKEN_SPECIAL) {
1446 switch ((int)tokval.t_integer) {
1462 if (float_option(value)) {
1463 report_error(pass1 == 1 ? ERR_NONFATAL : ERR_PANIC,
1464 "unknown 'float' directive: %s",
1469 if (!ofmt->directive(directive, value, pass2))
1470 report_error(pass1 == 1 ? ERR_NONFATAL : ERR_PANIC,
1471 "unrecognised directive [%s]",
1475 report_error(ERR_NONFATAL,
1476 "invalid parameter to [%s] directive",
1479 } else { /* it isn't a directive */
1481 parse_line(pass1, line, &output_ins,
1482 report_error, evaluate, def_label);
1484 if (optimizing > 0) {
1485 if (forwref != NULL && globallineno == forwref->lineno) {
1486 output_ins.forw_ref = true;
1488 output_ins.oprs[forwref->operand].opflags |=
1490 forwref = saa_rstruct(forwrefs);
1491 } while (forwref != NULL
1492 && forwref->lineno == globallineno);
1494 output_ins.forw_ref = false;
1496 if (output_ins.forw_ref) {
1498 for (i = 0; i < output_ins.operands; i++) {
1499 if (output_ins.oprs[i].
1500 opflags & OPFLAG_FORWARD) {
1501 struct forwrefinfo *fwinf =
1502 (struct forwrefinfo *)
1503 saa_wstruct(forwrefs);
1504 fwinf->lineno = globallineno;
1513 if (output_ins.opcode == I_EQU) {
1516 * Special `..' EQUs get processed in pass two,
1517 * except `..@' macro-processor EQUs which are done
1518 * in the normal place.
1520 if (!output_ins.label)
1521 report_error(ERR_NONFATAL,
1522 "EQU not preceded by label");
1524 else if (output_ins.label[0] != '.' ||
1525 output_ins.label[1] != '.' ||
1526 output_ins.label[2] == '@') {
1527 if (output_ins.operands == 1 &&
1528 (output_ins.oprs[0].type & IMMEDIATE) &&
1529 output_ins.oprs[0].wrt == NO_SEG) {
1530 bool isext = !!(output_ins.oprs[0].opflags
1532 def_label(output_ins.label,
1533 output_ins.oprs[0].segment,
1534 output_ins.oprs[0].offset, NULL,
1537 } else if (output_ins.operands == 2
1538 && (output_ins.oprs[0].type & IMMEDIATE)
1539 && (output_ins.oprs[0].type & COLON)
1540 && output_ins.oprs[0].segment == NO_SEG
1541 && output_ins.oprs[0].wrt == NO_SEG
1542 && (output_ins.oprs[1].type & IMMEDIATE)
1543 && output_ins.oprs[1].segment == NO_SEG
1544 && output_ins.oprs[1].wrt == NO_SEG) {
1545 def_label(output_ins.label,
1546 output_ins.oprs[0].offset | SEG_ABS,
1547 output_ins.oprs[1].offset,
1548 NULL, false, false, ofmt,
1551 report_error(ERR_NONFATAL,
1552 "bad syntax for EQU");
1556 * Special `..' EQUs get processed here, except
1557 * `..@' macro processor EQUs which are done above.
1559 if (output_ins.label[0] == '.' &&
1560 output_ins.label[1] == '.' &&
1561 output_ins.label[2] != '@') {
1562 if (output_ins.operands == 1 &&
1563 (output_ins.oprs[0].type & IMMEDIATE)) {
1564 define_label(output_ins.label,
1565 output_ins.oprs[0].segment,
1566 output_ins.oprs[0].offset,
1567 NULL, false, false, ofmt,
1569 } else if (output_ins.operands == 2
1570 && (output_ins.oprs[0].
1572 && (output_ins.oprs[0].type & COLON)
1573 && output_ins.oprs[0].segment ==
1575 && (output_ins.oprs[1].
1577 && output_ins.oprs[1].segment ==
1579 define_label(output_ins.label,
1582 output_ins.oprs[1].offset,
1583 NULL, false, false, ofmt,
1586 report_error(ERR_NONFATAL,
1587 "bad syntax for EQU");
1590 } else { /* instruction isn't an EQU */
1594 int64_t l = insn_size(location.segment, offs, sb, cpu,
1595 &output_ins, report_error);
1597 /* if (using_debug_info) && output_ins.opcode != -1) */
1598 if (using_debug_info)
1599 { /* fbk 03/25/01 */
1600 /* this is done here so we can do debug type info */
1602 TYS_ELEMENTS(output_ins.operands);
1603 switch (output_ins.opcode) {
1606 TYS_ELEMENTS(output_ins.oprs[0].
1611 TYS_ELEMENTS(output_ins.oprs[0].
1616 TYS_ELEMENTS(output_ins.oprs[0].
1621 TYS_ELEMENTS(output_ins.oprs[0].
1626 TYS_ELEMENTS(output_ins.oprs[0].
1631 TYS_ELEMENTS(output_ins.oprs[0].
1636 TYS_ELEMENTS(output_ins.oprs[0].
1640 typeinfo |= TY_BYTE;
1643 typeinfo |= TY_WORD;
1646 if (output_ins.eops_float)
1647 typeinfo |= TY_FLOAT;
1649 typeinfo |= TY_DWORD;
1652 typeinfo |= TY_QWORD;
1655 typeinfo |= TY_TBYTE;
1658 typeinfo |= TY_OWORD;
1661 typeinfo |= TY_YWORD;
1664 typeinfo = TY_LABEL;
1668 ofmt->current_dfmt->debug_typevalue(typeinfo);
1673 SET_CURR_OFFS(offs);
1676 * else l == -1 => invalid instruction, which will be
1677 * flagged as an error on pass 2
1681 offs += assemble(location.segment, offs, sb, cpu,
1682 &output_ins, ofmt, report_error,
1684 SET_CURR_OFFS(offs);
1688 cleanup_insn(&output_ins);
1691 location.offset = offs = GET_CURR_OFFS;
1692 } /* end while (line = preproc->getline... */
1693 if (pass1 == 2 && global_offset_changed)
1694 report_error(ERR_NONFATAL,
1695 "phase error detected at end of assembly.");
1698 preproc->cleanup(1);
1700 if ((passn > 1 && !global_offset_changed) || pass0 == 2) {
1702 } else if (global_offset_changed &&
1703 global_offset_changed < prev_offset_changed) {
1704 prev_offset_changed = global_offset_changed;
1710 if (terminate_after_phase)
1713 if ((stall_count > 997) || (passn >= pass_max)) {
1714 /* We get here if the labels don't converge
1715 * Example: FOO equ FOO + 1
1717 report_error(ERR_NONFATAL,
1718 "Can't find valid values for all labels "
1719 "after %d passes, giving up.", passn);
1720 report_error(ERR_NONFATAL,
1721 "Possible causes: recursive EQUs, macro abuse.");
1722 terminate_after_phase = true;
1727 preproc->cleanup(0);
1729 if (!terminate_after_phase && opt_verbose_info) {
1730 /* -On and -Ov switches */
1731 fprintf(stdout, "info: assembly required 1+%d+1 passes\n", passn-3);
1735 static enum directives getkw(char **directive, char **value)
1741 /* allow leading spaces or tabs */
1742 while (*buf == ' ' || *buf == '\t')
1750 while (*p && *p != ']')
1758 while (*p && *p != ';') {
1759 if (!nasm_isspace(*p))
1765 *directive = p = buf + 1;
1766 while (*buf && *buf != ' ' && *buf != ']' && *buf != '\t')
1773 while (nasm_isspace(*buf))
1774 buf++; /* beppu - skip leading whitespace */
1781 return bsii(*directive, directives, elements(directives));
1785 * gnu style error reporting
1786 * This function prints an error message to error_file in the
1787 * style used by GNU. An example would be:
1788 * file.asm:50: error: blah blah blah
1789 * where file.asm is the name of the file, 50 is the line number on
1790 * which the error occurs (or is detected) and "error:" is one of
1791 * the possible optional diagnostics -- it can be "error" or "warning"
1792 * or something else. Finally the line terminates with the actual
1795 * @param severity the severity of the warning or error
1796 * @param fmt the printf style format string
1798 static void report_error_gnu(int severity, const char *fmt, ...)
1802 if (is_suppressed_warning(severity))
1805 if (severity & ERR_NOFILE)
1806 fputs("nasm: ", error_file);
1808 char *currentfile = NULL;
1810 src_get(&lineno, ¤tfile);
1811 fprintf(error_file, "%s:%"PRId32": ", currentfile, lineno);
1812 nasm_free(currentfile);
1815 report_error_common(severity, fmt, ap);
1820 * MS style error reporting
1821 * This function prints an error message to error_file in the
1822 * style used by Visual C and some other Microsoft tools. An example
1824 * file.asm(50) : error: blah blah blah
1825 * where file.asm is the name of the file, 50 is the line number on
1826 * which the error occurs (or is detected) and "error:" is one of
1827 * the possible optional diagnostics -- it can be "error" or "warning"
1828 * or something else. Finally the line terminates with the actual
1831 * @param severity the severity of the warning or error
1832 * @param fmt the printf style format string
1834 static void report_error_vc(int severity, const char *fmt, ...)
1838 if (is_suppressed_warning(severity))
1841 if (severity & ERR_NOFILE)
1842 fputs("nasm: ", error_file);
1844 char *currentfile = NULL;
1846 src_get(&lineno, ¤tfile);
1847 fprintf(error_file, "%s(%"PRId32") : ", currentfile, lineno);
1848 nasm_free(currentfile);
1851 report_error_common(severity, fmt, ap);
1856 * check for supressed warning
1857 * checks for suppressed warning or pass one only warning and we're
1860 * @param severity the severity of the warning or error
1861 * @return true if we should abort error/warning printing
1863 static bool is_suppressed_warning(int severity)
1866 * See if it's a suppressed warning.
1868 return (severity & ERR_MASK) == ERR_WARNING &&
1869 (((severity & ERR_WARN_MASK) != 0 &&
1870 !warning_on[(severity & ERR_WARN_MASK) >> ERR_WARN_SHR]) ||
1871 /* See if it's a pass-one only warning and we're not in pass one. */
1872 ((severity & ERR_PASS1) && pass0 != 1) ||
1873 ((severity & ERR_PASS2) && pass0 != 2));
1877 * common error reporting
1878 * This is the common back end of the error reporting schemes currently
1879 * implemented. It prints the nature of the warning and then the
1880 * specific error message to error_file and may or may not return. It
1881 * doesn't return if the error severity is a "panic" or "debug" type.
1883 * @param severity the severity of the warning or error
1884 * @param fmt the printf style format string
1886 static void report_error_common(int severity, const char *fmt,
1889 switch (severity & (ERR_MASK|ERR_NO_SEVERITY)) {
1891 fputs("warning: ", error_file);
1894 fputs("error: ", error_file);
1897 fputs("fatal: ", error_file);
1900 fputs("panic: ", error_file);
1903 fputs("debug: ", error_file);
1909 vfprintf(error_file, fmt, args);
1910 putc('\n', error_file);
1912 if (severity & ERR_USAGE)
1915 switch (severity & ERR_MASK) {
1917 /* no further action, by definition */
1920 if (warning_on[0]) /* Treat warnings as errors */
1921 terminate_after_phase = true;
1924 terminate_after_phase = true;
1933 exit(1); /* instantly die */
1934 break; /* placate silly compilers */
1937 /* abort(); *//* halt, catch fire, and dump core */
1943 static void usage(void)
1945 fputs("type `nasm -h' for help\n", error_file);
1948 static void register_output_formats(void)
1950 ofmt = ofmt_register(report_error);
1953 #define BUF_DELTA 512
1955 static FILE *no_pp_fp;
1956 static efunc no_pp_err;
1957 static ListGen *no_pp_list;
1958 static int32_t no_pp_lineinc;
1960 static void no_pp_reset(char *file, int pass, efunc error, evalfunc eval,
1961 ListGen * listgen, StrList **deplist)
1963 src_set_fname(nasm_strdup(file));
1967 no_pp_fp = fopen(file, "r");
1969 no_pp_err(ERR_FATAL | ERR_NOFILE,
1970 "unable to open input file `%s'", file);
1971 no_pp_list = listgen;
1972 (void)pass; /* placate compilers */
1973 (void)eval; /* placate compilers */
1976 StrList *sl = nasm_malloc(strlen(file)+1+sizeof sl->next);
1978 strcpy(sl->str, file);
1983 static char *no_pp_getline(void)
1985 char *buffer, *p, *q;
1988 bufsize = BUF_DELTA;
1989 buffer = nasm_malloc(BUF_DELTA);
1990 src_set_linnum(src_get_linnum() + no_pp_lineinc);
1992 while (1) { /* Loop to handle %line */
1995 while (1) { /* Loop to handle long lines */
1996 q = fgets(p, bufsize - (p - buffer), no_pp_fp);
2000 if (p > buffer && p[-1] == '\n')
2002 if (p - buffer > bufsize - 10) {
2004 offset = p - buffer;
2005 bufsize += BUF_DELTA;
2006 buffer = nasm_realloc(buffer, bufsize);
2007 p = buffer + offset;
2011 if (!q && p == buffer) {
2017 * Play safe: remove CRs, LFs and any spurious ^Zs, if any of
2018 * them are present at the end of the line.
2020 buffer[strcspn(buffer, "\r\n\032")] = '\0';
2022 if (!nasm_strnicmp(buffer, "%line", 5)) {
2025 char *nm = nasm_malloc(strlen(buffer));
2026 if (sscanf(buffer + 5, "%"PRId32"+%d %s", &ln, &li, nm) == 3) {
2027 nasm_free(src_set_fname(nm));
2037 no_pp_list->line(LIST_READ, buffer);
2042 static void no_pp_cleanup(int pass)
2044 (void)pass; /* placate GCC */
2048 static uint32_t get_cpu(char *value)
2050 if (!strcmp(value, "8086"))
2052 if (!strcmp(value, "186"))
2054 if (!strcmp(value, "286"))
2056 if (!strcmp(value, "386"))
2058 if (!strcmp(value, "486"))
2060 if (!strcmp(value, "586") || !nasm_stricmp(value, "pentium"))
2062 if (!strcmp(value, "686") ||
2063 !nasm_stricmp(value, "ppro") ||
2064 !nasm_stricmp(value, "pentiumpro") || !nasm_stricmp(value, "p2"))
2066 if (!nasm_stricmp(value, "p3") || !nasm_stricmp(value, "katmai"))
2068 if (!nasm_stricmp(value, "p4") || /* is this right? -- jrc */
2069 !nasm_stricmp(value, "willamette"))
2070 return IF_WILLAMETTE;
2071 if (!nasm_stricmp(value, "prescott"))
2073 if (!nasm_stricmp(value, "x64") ||
2074 !nasm_stricmp(value, "x86-64"))
2076 if (!nasm_stricmp(value, "ia64") ||
2077 !nasm_stricmp(value, "ia-64") ||
2078 !nasm_stricmp(value, "itanium") ||
2079 !nasm_stricmp(value, "itanic") || !nasm_stricmp(value, "merced"))
2082 report_error(pass0 < 2 ? ERR_NONFATAL : ERR_FATAL,
2083 "unknown 'cpu' type");
2085 return IF_PLEVEL; /* the maximum level */
2088 static int get_bits(char *value)
2092 if ((i = atoi(value)) == 16)
2093 return i; /* set for a 16-bit segment */
2096 report_error(ERR_NONFATAL,
2097 "cannot specify 32-bit segment on processor below a 386");
2100 } else if (i == 64) {
2101 if (cpu < IF_X86_64) {
2102 report_error(ERR_NONFATAL,
2103 "cannot specify 64-bit segment on processor below an x86-64");
2107 report_error(ERR_NONFATAL,
2108 "%s output format does not support 64-bit code",
2113 report_error(pass0 < 2 ? ERR_NONFATAL : ERR_FATAL,
2114 "`%s' is not a valid segment size; must be 16, 32 or 64",