1 /* ----------------------------------------------------------------------- *
3 * Copyright 1996-2009 The NASM Authors - All Rights Reserved
4 * See the file AUTHORS included with the NASM distribution for
5 * the specific copyright holders.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following
11 * * Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * * Redistributions in binary form must reproduce the above
14 * copyright notice, this list of conditions and the following
15 * disclaimer in the documentation and/or other materials provided
16 * with the distribution.
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
19 * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
20 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
21 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
22 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
23 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
26 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
29 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
30 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32 * ----------------------------------------------------------------------- */
35 * The Netwide Assembler main program module
61 #include "output/outform.h"
64 struct forwrefinfo { /* info held on forward refs. */
69 static int get_bits(char *value);
70 static uint32_t get_cpu(char *cpu_str);
71 static void parse_cmdline(int, char **);
72 static void assemble_file(char *, StrList **);
73 static void nasm_verror_gnu(int severity, const char *fmt, va_list args);
74 static void nasm_verror_vc(int severity, const char *fmt, va_list args);
75 static void nasm_verror_common(int severity, const char *fmt, va_list args);
76 static bool is_suppressed_warning(int severity);
77 static void usage(void);
79 static int using_debug_info, opt_verbose_info;
80 bool tasm_compatible_mode = false;
85 static time_t official_compile_time;
87 static char inname[FILENAME_MAX];
88 static char outname[FILENAME_MAX];
89 static char listname[FILENAME_MAX];
90 static char errname[FILENAME_MAX];
91 static int globallineno; /* for forward-reference tracking */
92 /* static int pass = 0; */
93 struct ofmt *ofmt = &OF_DEFAULT;
94 const struct dfmt *dfmt;
96 static FILE *error_file; /* Where to write error messages */
99 int optimizing = -1; /* number of optimization passes to take */
100 static int sb, cmd_sb = 16; /* by default */
101 static uint32_t cmd_cpu = IF_PLEVEL; /* highest level by default */
102 static uint32_t cpu = IF_PLEVEL; /* passed to insn_size & assemble.c */
103 int64_t global_offset_changed; /* referenced in labels.c */
104 int64_t prev_offset_changed;
107 static struct location location;
108 int in_abs_seg; /* Flag we are in ABSOLUTE seg */
109 int32_t abs_seg; /* ABSOLUTE segment basis */
110 int32_t abs_offset; /* ABSOLUTE offset */
112 static struct RAA *offsets;
114 static struct SAA *forwrefs; /* keep track of forward references */
115 static const struct forwrefinfo *forwref;
117 static Preproc *preproc;
119 op_normal, /* Preprocess and assemble */
120 op_preprocess, /* Preprocess only */
121 op_depend, /* Generate dependencies */
123 static enum op_type operating_mode;
124 /* Dependency flags */
125 static bool depend_emit_phony = false;
126 static bool depend_missing_ok = false;
127 static const char *depend_target = NULL;
128 static const char *depend_file = NULL;
131 * Which of the suppressible warnings are suppressed. Entry zero
132 * isn't an actual warning, but it used for -w+error/-Werror.
135 static bool warning_on[ERR_WARN_MAX+1]; /* Current state */
136 static bool warning_on_global[ERR_WARN_MAX+1]; /* Command-line state */
138 static const struct warning {
142 } warnings[ERR_WARN_MAX+1] = {
143 {"error", "treat warnings as errors", false},
144 {"macro-params", "macro calls with wrong parameter count", true},
145 {"macro-selfref", "cyclic macro references", false},
146 {"macro-defaults", "macros with more default than optional parameters", true},
147 {"orphan-labels", "labels alone on lines without trailing `:'", true},
148 {"number-overflow", "numeric constant does not fit", true},
149 {"gnu-elf-extensions", "using 8- or 16-bit relocation in ELF32, a GNU extension", false},
150 {"float-overflow", "floating point overflow", true},
151 {"float-denorm", "floating point denormal", false},
152 {"float-underflow", "floating point underflow", false},
153 {"float-toolong", "too many digits in floating-point number", true},
154 {"user", "%warning directives", true},
158 * This is a null preprocessor which just copies lines from input
159 * to output. It's used when someone explicitly requests that NASM
160 * not preprocess their source file.
163 static void no_pp_reset(char *, int, ListGen *, StrList **);
164 static char *no_pp_getline(void);
165 static void no_pp_cleanup(int);
166 static Preproc no_pp = {
173 * get/set current offset...
175 #define GET_CURR_OFFS (in_abs_seg?abs_offset:\
176 raa_read(offsets,location.segment))
177 #define SET_CURR_OFFS(x) (in_abs_seg?(void)(abs_offset=(x)):\
178 (void)(offsets=raa_write(offsets,location.segment,(x))))
180 static bool want_usage;
181 static bool terminate_after_phase;
182 int user_nolist = 0; /* fbk 9/2/00 */
184 static void nasm_fputs(const char *line, FILE * outfile)
187 fputs(line, outfile);
193 /* Convert a struct tm to a POSIX-style time constant */
194 static int64_t posix_mktime(struct tm *tm)
197 int64_t y = tm->tm_year;
199 /* See IEEE 1003.1:2004, section 4.14 */
201 t = (y-70)*365 + (y-69)/4 - (y-1)/100 + (y+299)/400;
213 static void define_macros_early(void)
216 struct tm lt, *lt_p, gm, *gm_p;
219 lt_p = localtime(&official_compile_time);
223 strftime(temp, sizeof temp, "__DATE__=\"%Y-%m-%d\"", <);
225 strftime(temp, sizeof temp, "__DATE_NUM__=%Y%m%d", <);
227 strftime(temp, sizeof temp, "__TIME__=\"%H:%M:%S\"", <);
229 strftime(temp, sizeof temp, "__TIME_NUM__=%H%M%S", <);
233 gm_p = gmtime(&official_compile_time);
237 strftime(temp, sizeof temp, "__UTC_DATE__=\"%Y-%m-%d\"", &gm);
239 strftime(temp, sizeof temp, "__UTC_DATE_NUM__=%Y%m%d", &gm);
241 strftime(temp, sizeof temp, "__UTC_TIME__=\"%H:%M:%S\"", &gm);
243 strftime(temp, sizeof temp, "__UTC_TIME_NUM__=%H%M%S", &gm);
248 posix_time = posix_mktime(&gm);
250 posix_time = posix_mktime(<);
255 snprintf(temp, sizeof temp, "__POSIX_TIME__=%"PRId64, posix_time);
260 static void define_macros_late(void)
264 snprintf(temp, sizeof(temp), "__OUTPUT_FORMAT__=%s\n",
269 static void emit_dependencies(StrList *list)
275 if (depend_file && strcmp(depend_file, "-")) {
276 deps = fopen(depend_file, "w");
278 nasm_error(ERR_NONFATAL|ERR_NOFILE|ERR_USAGE,
279 "unable to write dependency file `%s'", depend_file);
286 linepos = fprintf(deps, "%s:", depend_target);
287 list_for_each(l, list) {
288 len = strlen(l->str);
289 if (linepos + len > 62) {
290 fprintf(deps, " \\\n ");
293 fprintf(deps, " %s", l->str);
296 fprintf(deps, "\n\n");
298 list_for_each_safe(l, nl, list) {
299 if (depend_emit_phony)
300 fprintf(deps, "%s:\n\n", l->str);
308 int main(int argc, char **argv)
310 StrList *depend_list = NULL, **depend_ptr;
312 time(&official_compile_time);
315 want_usage = terminate_after_phase = false;
316 nasm_set_verror(nasm_verror_gnu);
322 nasm_init_malloc_error();
323 offsets = raa_init();
324 forwrefs = saa_init((int32_t)sizeof(struct forwrefinfo));
327 operating_mode = op_normal;
331 /* Define some macros dependent on the runtime, but not
332 on the command line. */
333 define_macros_early();
335 parse_cmdline(argc, argv);
337 if (terminate_after_phase) {
343 /* If debugging info is disabled, suppress any debug calls */
344 if (!using_debug_info)
345 ofmt->current_dfmt = &null_debug_form;
348 pp_extra_stdmac(ofmt->stdmac);
349 parser_global_info(&location);
350 eval_global_info(ofmt, lookup_label, &location);
352 /* define some macros dependent of command-line */
353 define_macros_late();
355 depend_ptr = (depend_file || (operating_mode == op_depend))
356 ? &depend_list : NULL;
358 depend_target = outname;
360 switch (operating_mode) {
365 if (depend_missing_ok)
366 pp_include_path(NULL); /* "assume generated" */
368 preproc->reset(inname, 0, &nasmlist, depend_ptr);
369 if (outname[0] == '\0')
370 ofmt->filename(inname, outname);
372 while ((line = preproc->getline()))
381 char *file_name = NULL;
382 int32_t prior_linnum = 0;
386 ofile = fopen(outname, "w");
388 nasm_error(ERR_FATAL | ERR_NOFILE,
389 "unable to open output file `%s'",
394 location.known = false;
397 preproc->reset(inname, 3, &nasmlist, depend_ptr);
399 while ((line = preproc->getline())) {
401 * We generate %line directives if needed for later programs
403 int32_t linnum = prior_linnum += lineinc;
404 int altline = src_get(&linnum, &file_name);
406 if (altline == 1 && lineinc == 1)
407 nasm_fputs("", ofile);
409 lineinc = (altline != -1 || lineinc != 1);
410 fprintf(ofile ? ofile : stdout,
411 "%%line %"PRId32"+%d %s\n", linnum, lineinc,
414 prior_linnum = linnum;
416 nasm_fputs(line, ofile);
419 nasm_free(file_name);
423 if (ofile && terminate_after_phase)
432 * We must call ofmt->filename _anyway_, even if the user
433 * has specified their own output file, because some
434 * formats (eg OBJ and COFF) use ofmt->filename to find out
435 * the name of the input file and then put that inside the
438 ofmt->filename(inname, outname);
440 ofile = fopen(outname, (ofmt->flags & OFMT_TEXT) ? "w" : "wb");
442 nasm_error(ERR_FATAL | ERR_NOFILE,
443 "unable to open output file `%s'", outname);
447 * We must call init_labels() before ofmt->init() since
448 * some object formats will want to define labels in their
449 * init routines. (eg OS/2 defines the FLAT group)
454 dfmt = ofmt->current_dfmt;
457 assemble_file(inname, depend_ptr);
459 if (!terminate_after_phase) {
460 ofmt->cleanup(using_debug_info);
464 nasm_error(ERR_NONFATAL|ERR_NOFILE,
465 "write error on output file `%s'", outname);
471 if (terminate_after_phase)
479 if (depend_list && !terminate_after_phase)
480 emit_dependencies(depend_list);
490 return terminate_after_phase;
494 * Get a parameter for a command line option.
495 * First arg must be in the form of e.g. -f...
497 static char *get_param(char *p, char *q, bool *advance)
500 if (p[2]) { /* the parameter's in the option */
502 while (nasm_isspace(*p))
510 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
511 "option `-%c' requires an argument", p[1]);
518 static void copy_filename(char *dst, const char *src)
520 size_t len = strlen(src);
522 if (len >= (size_t)FILENAME_MAX) {
523 nasm_error(ERR_FATAL | ERR_NOFILE, "file name too long");
526 strncpy(dst, src, FILENAME_MAX);
530 * Convert a string to Make-safe form
532 static char *quote_for_make(const char *str)
537 size_t n = 1; /* Terminating zero */
543 for (p = str; *p; p++) {
547 /* Convert N backslashes + ws -> 2N+1 backslashes + ws */
567 /* Convert N backslashes at the end of filename to 2N backslashes */
571 os = q = nasm_malloc(n);
574 for (p = str; *p; p++) {
617 #define OPT_POSTFIX 1
618 struct textargs textopts[] = {
619 {"prefix", OPT_PREFIX},
620 {"postfix", OPT_POSTFIX},
624 static bool stopoptions = false;
625 static bool process_arg(char *p, char *q)
629 bool advance = false;
635 if (p[0] == '-' && !stopoptions) {
636 if (strchr("oOfpPdDiIlFXuUZwW", p[1])) {
637 /* These parameters take values */
638 if (!(param = get_param(p, q, &advance)))
647 case 'o': /* output file */
648 copy_filename(outname, param);
651 case 'f': /* output format */
652 ofmt = ofmt_find(param);
654 nasm_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
655 "unrecognised output format `%s' - "
656 "use -hf for a list", param);
660 case 'O': /* Optimization level */
665 /* Naked -O == -Ox */
666 optimizing = INT_MAX >> 1; /* Almost unlimited */
670 case '0': case '1': case '2': case '3': case '4':
671 case '5': case '6': case '7': case '8': case '9':
672 opt = strtoul(param, ¶m, 10);
674 /* -O0 -> optimizing == -1, 0.98 behaviour */
675 /* -O1 -> optimizing == 0, 0.98.09 behaviour */
677 optimizing = opt - 1;
685 opt_verbose_info = true;
690 optimizing = INT_MAX >> 1; /* Almost unlimited */
694 nasm_error(ERR_FATAL,
695 "unknown optimization option -O%c\n",
704 case 'p': /* pre-include */
706 pp_pre_include(param);
709 case 'd': /* pre-define */
711 pp_pre_define(param);
714 case 'u': /* un-define */
716 pp_pre_undefine(param);
719 case 'i': /* include search path */
721 pp_include_path(param);
724 case 'l': /* listing file */
725 copy_filename(listname, param);
728 case 'Z': /* error messages file */
729 strcpy(errname, param);
732 case 'F': /* specify debug format */
733 ofmt->current_dfmt = dfmt_find(ofmt, param);
734 if (!ofmt->current_dfmt) {
735 nasm_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
736 "unrecognized debug format `%s' for"
737 " output format `%s'",
738 param, ofmt->shortname);
740 using_debug_info = true;
743 case 'X': /* specify error reporting format */
744 if (nasm_stricmp("vc", param) == 0)
745 nasm_set_verror(nasm_verror_vc);
746 else if (nasm_stricmp("gnu", param) == 0)
747 nasm_set_verror(nasm_verror_gnu);
749 nasm_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
750 "unrecognized error reporting format `%s'",
755 using_debug_info = true;
760 ("usage: nasm [-@ response file] [-o outfile] [-f format] "
762 " [options...] [--] filename\n"
763 " or nasm -v for version info\n\n"
764 " -t assemble in SciTech TASM compatible mode\n"
765 " -g generate debug information in selected format\n");
767 (" -E (or -e) preprocess only (writes output to stdout by default)\n"
768 " -a don't preprocess (assemble only)\n"
769 " -M generate Makefile dependencies on stdout\n"
770 " -MG d:o, missing files assumed generated\n"
771 " -MF <file> set Makefile dependency file\n"
772 " -MD <file> assemble and generate dependencies\n"
773 " -MT <file> dependency target name\n"
774 " -MQ <file> dependency target name (quoted)\n"
775 " -MP emit phony target\n\n"
776 " -Z<file> redirect error messages to file\n"
777 " -s redirect error messages to stdout\n\n"
778 " -F format select a debugging format\n\n"
779 " -I<path> adds a pathname to the include file path\n");
781 (" -O<digit> optimize branch offsets\n"
782 " -O0: No optimization (default)\n"
783 " -O1: Minimal optimization\n"
784 " -Ox: Multipass optimization (recommended)\n\n"
785 " -P<file> pre-includes a file\n"
786 " -D<macro>[=<value>] pre-defines a macro\n"
787 " -U<macro> undefines a macro\n"
788 " -X<format> specifies error reporting format (gnu or vc)\n"
789 " -w+foo enables warning foo (equiv. -Wfoo)\n"
790 " -w-foo disable warning foo (equiv. -Wno-foo)\n\n"
791 "--prefix,--postfix\n"
792 " this options prepend or append the given argument to all\n"
793 " extern and global variables\n\n"
795 for (i = 0; i <= ERR_WARN_MAX; i++)
796 printf(" %-23s %s (default %s)\n",
797 warnings[i].name, warnings[i].help,
798 warnings[i].enabled ? "on" : "off");
800 ("\nresponse files should contain command line parameters"
801 ", one per line.\n");
803 printf("\nvalid output formats for -f are"
804 " (`*' denotes default):\n");
805 ofmt_list(ofmt, stdout);
807 printf("\nFor a list of valid output formats, use -hf.\n");
808 printf("For a list of debug formats, use -f <form> -y.\n");
810 exit(0); /* never need usage message here */
814 printf("\nvalid debug formats for '%s' output format are"
815 " ('*' denotes default):\n", ofmt->shortname);
816 dfmt_list(ofmt, stdout);
821 tasm_compatible_mode = true;
825 printf("NASM version %s compiled on %s%s\n",
826 nasm_version, nasm_date, nasm_compile_options);
827 exit(0); /* never need usage message here */
830 case 'e': /* preprocess only */
832 operating_mode = op_preprocess;
835 case 'a': /* assemble only - don't preprocess */
840 if (param[0] == 'n' && param[1] == 'o' && param[2] == '-') {
849 if (param[0] != '+' && param[0] != '-') {
850 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
851 "invalid option to `-w'");
854 do_warn = (param[0] == '+');
858 for (i = 0; i <= ERR_WARN_MAX; i++)
859 if (!nasm_stricmp(param, warnings[i].name))
861 if (i <= ERR_WARN_MAX)
862 warning_on_global[i] = do_warn;
863 else if (!nasm_stricmp(param, "all"))
864 for (i = 1; i <= ERR_WARN_MAX; i++)
865 warning_on_global[i] = do_warn;
866 else if (!nasm_stricmp(param, "none"))
867 for (i = 1; i <= ERR_WARN_MAX; i++)
868 warning_on_global[i] = !do_warn;
870 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
871 "invalid warning `%s'", param);
877 operating_mode = op_depend;
880 operating_mode = op_depend;
881 depend_missing_ok = true;
884 depend_emit_phony = true;
895 depend_target = quote_for_make(q);
899 nasm_error(ERR_NONFATAL|ERR_NOFILE|ERR_USAGE,
900 "unknown dependency option `-M%c'", p[2]);
903 if (advance && (!q || !q[0])) {
904 nasm_error(ERR_NONFATAL|ERR_NOFILE|ERR_USAGE,
905 "option `-M%c' requires a parameter", p[2]);
914 if (p[2] == 0) { /* -- => stop processing options */
918 for (s = 0; textopts[s].label; s++) {
919 if (!nasm_stricmp(p + 2, textopts[s].label)) {
930 nasm_error(ERR_NONFATAL | ERR_NOFILE |
932 "option `--%s' requires an argument",
936 advance = 1, param = q;
939 if (s == OPT_PREFIX) {
940 strncpy(lprefix, param, PREFIX_MAX - 1);
941 lprefix[PREFIX_MAX - 1] = 0;
944 if (s == OPT_POSTFIX) {
945 strncpy(lpostfix, param, POSTFIX_MAX - 1);
946 lpostfix[POSTFIX_MAX - 1] = 0;
953 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
954 "unrecognised option `--%s'", p + 2);
962 if (!ofmt->setinfo(GI_SWITCH, &p))
963 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
964 "unrecognised option `-%c'", p[1]);
969 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
970 "more than one input file specified");
972 copy_filename(inname, p);
979 #define ARG_BUF_DELTA 128
981 static void process_respfile(FILE * rfile)
983 char *buffer, *p, *q, *prevarg;
984 int bufsize, prevargsize;
986 bufsize = prevargsize = ARG_BUF_DELTA;
987 buffer = nasm_malloc(ARG_BUF_DELTA);
988 prevarg = nasm_malloc(ARG_BUF_DELTA);
991 while (1) { /* Loop to handle all lines in file */
993 while (1) { /* Loop to handle long lines */
994 q = fgets(p, bufsize - (p - buffer), rfile);
998 if (p > buffer && p[-1] == '\n')
1000 if (p - buffer > bufsize - 10) {
1002 offset = p - buffer;
1003 bufsize += ARG_BUF_DELTA;
1004 buffer = nasm_realloc(buffer, bufsize);
1005 p = buffer + offset;
1009 if (!q && p == buffer) {
1011 process_arg(prevarg, NULL);
1018 * Play safe: remove CRs, LFs and any spurious ^Zs, if any of
1019 * them are present at the end of the line.
1021 *(p = &buffer[strcspn(buffer, "\r\n\032")]) = '\0';
1023 while (p > buffer && nasm_isspace(p[-1]))
1027 while (nasm_isspace(*p))
1030 if (process_arg(prevarg, p))
1033 if ((int) strlen(p) > prevargsize - 10) {
1034 prevargsize += ARG_BUF_DELTA;
1035 prevarg = nasm_realloc(prevarg, prevargsize);
1037 strncpy(prevarg, p, prevargsize);
1041 /* Function to process args from a string of args, rather than the
1042 * argv array. Used by the environment variable and response file
1045 static void process_args(char *args)
1047 char *p, *q, *arg, *prevarg;
1048 char separator = ' ';
1051 if (*p && *p != '-')
1056 while (*p && *p != separator)
1058 while (*p == separator)
1062 if (process_arg(prevarg, arg))
1066 process_arg(arg, NULL);
1069 static void process_response_file(const char *file)
1072 FILE *f = fopen(file, "r");
1077 while (fgets(str, sizeof str, f)) {
1083 static void parse_cmdline(int argc, char **argv)
1086 char *envreal, *envcopy = NULL, *p, *arg;
1089 *inname = *outname = *listname = *errname = '\0';
1090 for (i = 0; i <= ERR_WARN_MAX; i++)
1091 warning_on_global[i] = warnings[i].enabled;
1094 * First, process the NASMENV environment variable.
1096 envreal = getenv("NASMENV");
1099 envcopy = nasm_strdup(envreal);
1100 process_args(envcopy);
1105 * Now process the actual command line.
1110 if (argv[0][0] == '@') {
1111 /* We have a response file, so process this as a set of
1112 * arguments like the environment variable. This allows us
1113 * to have multiple arguments on a single line, which is
1114 * different to the -@resp file processing below for regular
1117 process_response_file(argv[0]+1);
1121 if (!stopoptions && argv[0][0] == '-' && argv[0][1] == '@') {
1122 p = get_param(argv[0], argc > 1 ? argv[1] : NULL, &advance);
1124 rfile = fopen(p, "r");
1126 process_respfile(rfile);
1129 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
1130 "unable to open response file `%s'", p);
1133 advance = process_arg(argv[0], argc > 1 ? argv[1] : NULL);
1134 argv += advance, argc -= advance;
1137 /* Look for basic command line typos. This definitely doesn't
1138 catch all errors, but it might help cases of fumbled fingers. */
1140 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
1141 "no input file specified");
1142 else if (!strcmp(inname, errname) ||
1143 !strcmp(inname, outname) ||
1144 !strcmp(inname, listname) ||
1145 (depend_file && !strcmp(inname, depend_file)))
1146 nasm_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
1147 "file `%s' is both input and output file",
1151 error_file = fopen(errname, "w");
1153 error_file = stderr; /* Revert to default! */
1154 nasm_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
1155 "cannot open file `%s' for error messages",
1161 static enum directives getkw(char **directive, char **value);
1163 static void assemble_file(char *fname, StrList **depend_ptr)
1165 char *directive, *value, *p, *q, *special, *line;
1171 struct tokenval tokval;
1175 if (cmd_sb == 32 && cmd_cpu < IF_386)
1176 nasm_error(ERR_FATAL, "command line: "
1177 "32-bit segment size requires a higher cpu");
1179 pass_max = prev_offset_changed = (INT_MAX >> 1) + 2; /* Almost unlimited */
1180 for (passn = 1; pass0 <= 2; passn++) {
1184 pass1 = pass0 == 2 ? 2 : 1; /* 1, 1, 1, ..., 1, 2 */
1185 pass2 = passn > 1 ? 2 : 1; /* 1, 2, 2, ..., 2, 2 */
1186 /* pass0 0, 0, 0, ..., 1, 2 */
1188 def_label = passn > 1 ? redefine_label : define_label;
1190 globalbits = sb = cmd_sb; /* set 'bits' to command line default */
1194 nasmlist.init(listname, nasm_error);
1197 global_offset_changed = 0; /* set by redefine_label */
1198 location.segment = ofmt->section(NULL, pass2, &sb);
1201 saa_rewind(forwrefs);
1202 forwref = saa_rstruct(forwrefs);
1204 offsets = raa_init();
1206 preproc->reset(fname, pass1, &nasmlist,
1207 pass1 == 2 ? depend_ptr : NULL);
1208 memcpy(warning_on, warning_on_global, (ERR_WARN_MAX+1) * sizeof(bool));
1212 location.known = true;
1213 location.offset = offs = GET_CURR_OFFS;
1215 while ((line = preproc->getline())) {
1220 * Here we parse our directives; this is not handled by the
1221 * 'real' parser. This really should be a separate function.
1224 d = getkw(&directive, &value);
1229 case D_SEGMENT: /* [SEGMENT n] */
1231 seg = ofmt->section(value, pass2, &sb);
1232 if (seg == NO_SEG) {
1233 nasm_error(pass1 == 1 ? ERR_NONFATAL : ERR_PANIC,
1234 "segment name `%s' not recognized",
1238 location.segment = seg;
1241 case D_EXTERN: /* [EXTERN label:special] */
1243 value++; /* skip initial $ if present */
1246 while (*q && *q != ':')
1250 ofmt->symdef(value, 0L, 0L, 3, q);
1252 } else if (passn == 1) {
1257 while (*q && *q != ':') {
1263 nasm_error(ERR_NONFATAL,
1264 "identifier expected after EXTERN");
1272 if (!is_extern(value)) { /* allow re-EXTERN to be ignored */
1274 pass0 = 1; /* fake pass 1 in labels.c */
1275 declare_as_global(value, special);
1276 define_label(value, seg_alloc(), 0L, NULL,
1280 } /* else pass0 == 1 */
1282 case D_BITS: /* [BITS bits] */
1283 globalbits = sb = get_bits(value);
1285 case D_GLOBAL: /* [GLOBAL symbol:special] */
1287 value++; /* skip initial $ if present */
1288 if (pass0 == 2) { /* pass 2 */
1290 while (*q && *q != ':')
1294 ofmt->symdef(value, 0L, 0L, 3, q);
1296 } else if (pass2 == 1) { /* pass == 1 */
1301 while (*q && *q != ':') {
1307 nasm_error(ERR_NONFATAL,
1308 "identifier expected after GLOBAL");
1316 declare_as_global(value, special);
1319 case D_COMMON: /* [COMMON symbol size:special] */
1324 value++; /* skip initial $ if present */
1329 while (*p && !nasm_isspace(*p)) {
1335 nasm_error(ERR_NONFATAL,
1336 "identifier expected after COMMON");
1340 while (*p && nasm_isspace(*p))
1343 while (*q && *q != ':')
1351 size = readnum(p, &rn_error);
1353 nasm_error(ERR_NONFATAL,
1354 "invalid size specified"
1355 " in COMMON declaration");
1359 nasm_error(ERR_NONFATAL,
1360 "no size specified in"
1361 " COMMON declaration");
1366 define_common(value, seg_alloc(), size, special);
1367 } else if (pass0 == 2) {
1369 ofmt->symdef(value, 0L, 0L, 3, special);
1373 case D_ABSOLUTE: /* [ABSOLUTE address] */
1375 stdscan_bufptr = value;
1376 tokval.t_type = TOKEN_INVALID;
1377 e = evaluate(stdscan, NULL, &tokval, NULL, pass2,
1382 1 ? ERR_NONFATAL : ERR_PANIC,
1383 "cannot use non-relocatable expression as "
1384 "ABSOLUTE address");
1386 abs_seg = reloc_seg(e);
1387 abs_offset = reloc_value(e);
1389 } else if (passn == 1)
1390 abs_offset = 0x100; /* don't go near zero in case of / */
1392 nasm_error(ERR_PANIC, "invalid ABSOLUTE address "
1395 location.segment = NO_SEG;
1397 case D_DEBUG: /* [DEBUG] */
1400 bool badid, overlong;
1404 badid = overlong = false;
1405 if (!isidstart(*p)) {
1408 while (*p && !nasm_isspace(*p)) {
1409 if (q >= debugid + sizeof debugid - 1) {
1420 nasm_error(passn == 1 ? ERR_NONFATAL : ERR_PANIC,
1421 "identifier expected after DEBUG");
1425 nasm_error(passn == 1 ? ERR_NONFATAL : ERR_PANIC,
1426 "DEBUG identifier too long");
1429 while (*p && nasm_isspace(*p))
1432 dfmt->debug_directive(debugid, p);
1435 case D_WARNING: /* [WARNING {+|-|*}warn-name] */
1436 while (*value && nasm_isspace(*value))
1440 case '-': validid = 0; value++; break;
1441 case '+': validid = 1; value++; break;
1442 case '*': validid = 2; value++; break;
1443 default: validid = 1; break;
1446 for (i = 1; i <= ERR_WARN_MAX; i++)
1447 if (!nasm_stricmp(value, warnings[i].name))
1449 if (i <= ERR_WARN_MAX) {
1452 warning_on[i] = false;
1455 warning_on[i] = true;
1458 warning_on[i] = warning_on_global[i];
1463 nasm_error(ERR_NONFATAL,
1464 "invalid warning id in WARNING directive");
1466 case D_CPU: /* [CPU] */
1467 cpu = get_cpu(value);
1469 case D_LIST: /* [LIST {+|-}] */
1470 while (*value && nasm_isspace(*value))
1473 if (*value == '+') {
1476 if (*value == '-') {
1483 case D_DEFAULT: /* [DEFAULT] */
1485 stdscan_bufptr = value;
1486 tokval.t_type = TOKEN_INVALID;
1487 if (stdscan(NULL, &tokval) == TOKEN_SPECIAL) {
1488 switch ((int)tokval.t_integer) {
1504 if (float_option(value)) {
1505 nasm_error(pass1 == 1 ? ERR_NONFATAL : ERR_PANIC,
1506 "unknown 'float' directive: %s",
1511 if (!d || !ofmt->directive(d, value, pass2))
1512 nasm_error(pass1 == 1 ? ERR_NONFATAL : ERR_PANIC,
1513 "unrecognised directive [%s]",
1518 nasm_error(ERR_NONFATAL,
1519 "invalid parameter to [%s] directive",
1522 } else { /* it isn't a directive */
1523 parse_line(pass1, line, &output_ins, def_label);
1525 if (optimizing > 0) {
1526 if (forwref != NULL && globallineno == forwref->lineno) {
1527 output_ins.forw_ref = true;
1529 output_ins.oprs[forwref->operand].opflags |=
1531 forwref = saa_rstruct(forwrefs);
1532 } while (forwref != NULL
1533 && forwref->lineno == globallineno);
1535 output_ins.forw_ref = false;
1537 if (output_ins.forw_ref) {
1539 for (i = 0; i < output_ins.operands; i++) {
1540 if (output_ins.oprs[i].
1541 opflags & OPFLAG_FORWARD) {
1542 struct forwrefinfo *fwinf =
1543 (struct forwrefinfo *)
1544 saa_wstruct(forwrefs);
1545 fwinf->lineno = globallineno;
1554 if (output_ins.opcode == I_EQU) {
1557 * Special `..' EQUs get processed in pass two,
1558 * except `..@' macro-processor EQUs which are done
1559 * in the normal place.
1561 if (!output_ins.label)
1562 nasm_error(ERR_NONFATAL,
1563 "EQU not preceded by label");
1565 else if (output_ins.label[0] != '.' ||
1566 output_ins.label[1] != '.' ||
1567 output_ins.label[2] == '@') {
1568 if (output_ins.operands == 1 &&
1569 (output_ins.oprs[0].type & IMMEDIATE) &&
1570 output_ins.oprs[0].wrt == NO_SEG) {
1571 bool isext = !!(output_ins.oprs[0].opflags
1573 def_label(output_ins.label,
1574 output_ins.oprs[0].segment,
1575 output_ins.oprs[0].offset, NULL,
1577 } else if (output_ins.operands == 2
1578 && (output_ins.oprs[0].type & IMMEDIATE)
1579 && (output_ins.oprs[0].type & COLON)
1580 && output_ins.oprs[0].segment == NO_SEG
1581 && output_ins.oprs[0].wrt == NO_SEG
1582 && (output_ins.oprs[1].type & IMMEDIATE)
1583 && output_ins.oprs[1].segment == NO_SEG
1584 && output_ins.oprs[1].wrt == NO_SEG) {
1585 def_label(output_ins.label,
1586 output_ins.oprs[0].offset | SEG_ABS,
1587 output_ins.oprs[1].offset,
1588 NULL, false, false);
1590 nasm_error(ERR_NONFATAL,
1591 "bad syntax for EQU");
1595 * Special `..' EQUs get processed here, except
1596 * `..@' macro processor EQUs which are done above.
1598 if (output_ins.label[0] == '.' &&
1599 output_ins.label[1] == '.' &&
1600 output_ins.label[2] != '@') {
1601 if (output_ins.operands == 1 &&
1602 (output_ins.oprs[0].type & IMMEDIATE)) {
1603 define_label(output_ins.label,
1604 output_ins.oprs[0].segment,
1605 output_ins.oprs[0].offset,
1606 NULL, false, false);
1607 } else if (output_ins.operands == 2
1608 && (output_ins.oprs[0].
1610 && (output_ins.oprs[0].type & COLON)
1611 && output_ins.oprs[0].segment ==
1613 && (output_ins.oprs[1].
1615 && output_ins.oprs[1].segment ==
1617 define_label(output_ins.label,
1620 output_ins.oprs[1].offset,
1621 NULL, false, false);
1623 nasm_error(ERR_NONFATAL,
1624 "bad syntax for EQU");
1627 } else { /* instruction isn't an EQU */
1631 int64_t l = insn_size(location.segment, offs, sb, cpu,
1632 &output_ins, nasm_error);
1634 /* if (using_debug_info) && output_ins.opcode != -1) */
1635 if (using_debug_info)
1636 { /* fbk 03/25/01 */
1637 /* this is done here so we can do debug type info */
1639 TYS_ELEMENTS(output_ins.operands);
1640 switch (output_ins.opcode) {
1643 TYS_ELEMENTS(output_ins.oprs[0].
1648 TYS_ELEMENTS(output_ins.oprs[0].
1653 TYS_ELEMENTS(output_ins.oprs[0].
1658 TYS_ELEMENTS(output_ins.oprs[0].
1663 TYS_ELEMENTS(output_ins.oprs[0].
1668 TYS_ELEMENTS(output_ins.oprs[0].
1673 TYS_ELEMENTS(output_ins.oprs[0].
1677 typeinfo |= TY_BYTE;
1680 typeinfo |= TY_WORD;
1683 if (output_ins.eops_float)
1684 typeinfo |= TY_FLOAT;
1686 typeinfo |= TY_DWORD;
1689 typeinfo |= TY_QWORD;
1692 typeinfo |= TY_TBYTE;
1695 typeinfo |= TY_OWORD;
1698 typeinfo |= TY_YWORD;
1701 typeinfo = TY_LABEL;
1705 dfmt->debug_typevalue(typeinfo);
1709 SET_CURR_OFFS(offs);
1712 * else l == -1 => invalid instruction, which will be
1713 * flagged as an error on pass 2
1717 offs += assemble(location.segment, offs, sb, cpu,
1718 &output_ins, ofmt, nasm_error,
1720 SET_CURR_OFFS(offs);
1724 cleanup_insn(&output_ins);
1727 location.offset = offs = GET_CURR_OFFS;
1728 } /* end while (line = preproc->getline... */
1730 if (pass0 == 2 && global_offset_changed && !terminate_after_phase)
1731 nasm_error(ERR_NONFATAL,
1732 "phase error detected at end of assembly.");
1735 preproc->cleanup(1);
1737 if ((passn > 1 && !global_offset_changed) || pass0 == 2) {
1739 } else if (global_offset_changed &&
1740 global_offset_changed < prev_offset_changed) {
1741 prev_offset_changed = global_offset_changed;
1747 if (terminate_after_phase)
1750 if ((stall_count > 997) || (passn >= pass_max)) {
1751 /* We get here if the labels don't converge
1752 * Example: FOO equ FOO + 1
1754 nasm_error(ERR_NONFATAL,
1755 "Can't find valid values for all labels "
1756 "after %d passes, giving up.", passn);
1757 nasm_error(ERR_NONFATAL,
1758 "Possible causes: recursive EQUs, macro abuse.");
1763 preproc->cleanup(0);
1765 if (!terminate_after_phase && opt_verbose_info) {
1766 /* -On and -Ov switches */
1767 fprintf(stdout, "info: assembly required 1+%d+1 passes\n", passn-3);
1771 static enum directives getkw(char **directive, char **value)
1775 buf = nasm_skip_spaces(*directive);
1777 /* it should be enclosed in [ ] */
1780 q = strchr(buf, ']');
1784 /* stip off the comments */
1785 p = strchr(buf, ';');
1787 if (p < q) /* ouch! somwhere inside */
1792 /* no brace, no trailing spaces */
1794 nasm_zap_spaces_rev(--q);
1797 p = nasm_skip_spaces(++buf);
1798 q = nasm_skip_word(p);
1800 return D_NONE; /* sigh... no value there */
1804 /* and value finally */
1805 p = nasm_skip_spaces(++q);
1808 return find_directive(*directive);
1812 * gnu style error reporting
1813 * This function prints an error message to error_file in the
1814 * style used by GNU. An example would be:
1815 * file.asm:50: error: blah blah blah
1816 * where file.asm is the name of the file, 50 is the line number on
1817 * which the error occurs (or is detected) and "error:" is one of
1818 * the possible optional diagnostics -- it can be "error" or "warning"
1819 * or something else. Finally the line terminates with the actual
1822 * @param severity the severity of the warning or error
1823 * @param fmt the printf style format string
1825 static void nasm_verror_gnu(int severity, const char *fmt, va_list ap)
1827 char *currentfile = NULL;
1830 if (is_suppressed_warning(severity))
1833 if (!(severity & ERR_NOFILE))
1834 src_get(&lineno, ¤tfile);
1837 fprintf(error_file, "%s:%"PRId32": ", currentfile, lineno);
1838 nasm_free(currentfile);
1840 fputs("nasm: ", error_file);
1843 nasm_verror_common(severity, fmt, ap);
1847 * MS style error reporting
1848 * This function prints an error message to error_file in the
1849 * style used by Visual C and some other Microsoft tools. An example
1851 * file.asm(50) : error: blah blah blah
1852 * where file.asm is the name of the file, 50 is the line number on
1853 * which the error occurs (or is detected) and "error:" is one of
1854 * the possible optional diagnostics -- it can be "error" or "warning"
1855 * or something else. Finally the line terminates with the actual
1858 * @param severity the severity of the warning or error
1859 * @param fmt the printf style format string
1861 static void nasm_verror_vc(int severity, const char *fmt, va_list ap)
1863 char *currentfile = NULL;
1866 if (is_suppressed_warning(severity))
1869 if (!(severity & ERR_NOFILE))
1870 src_get(&lineno, ¤tfile);
1873 fprintf(error_file, "%s(%"PRId32") : ", currentfile, lineno);
1874 nasm_free(currentfile);
1876 fputs("nasm: ", error_file);
1879 nasm_verror_common(severity, fmt, ap);
1883 * check for supressed warning
1884 * checks for suppressed warning or pass one only warning and we're
1887 * @param severity the severity of the warning or error
1888 * @return true if we should abort error/warning printing
1890 static bool is_suppressed_warning(int severity)
1893 * See if it's a suppressed warning.
1895 return (severity & ERR_MASK) == ERR_WARNING &&
1896 (((severity & ERR_WARN_MASK) != 0 &&
1897 !warning_on[(severity & ERR_WARN_MASK) >> ERR_WARN_SHR]) ||
1898 /* See if it's a pass-one only warning and we're not in pass one. */
1899 ((severity & ERR_PASS1) && pass0 != 1) ||
1900 ((severity & ERR_PASS2) && pass0 != 2));
1904 * common error reporting
1905 * This is the common back end of the error reporting schemes currently
1906 * implemented. It prints the nature of the warning and then the
1907 * specific error message to error_file and may or may not return. It
1908 * doesn't return if the error severity is a "panic" or "debug" type.
1910 * @param severity the severity of the warning or error
1911 * @param fmt the printf style format string
1913 static void nasm_verror_common(int severity, const char *fmt, va_list args)
1918 switch (severity & (ERR_MASK|ERR_NO_SEVERITY)) {
1939 vsnprintf(msg, sizeof msg, fmt, args);
1941 fprintf(error_file, "%s%s\n", pfx, msg);
1944 nasmlist.error(severity, pfx, msg);
1946 if (severity & ERR_USAGE)
1949 switch (severity & ERR_MASK) {
1951 /* no further action, by definition */
1954 if (warning_on[0]) /* Treat warnings as errors */
1955 terminate_after_phase = true;
1958 terminate_after_phase = true;
1968 exit(1); /* instantly die */
1969 break; /* placate silly compilers */
1972 /* abort(); *//* halt, catch fire, and dump core */
1978 static void usage(void)
1980 fputs("type `nasm -h' for help\n", error_file);
1983 #define BUF_DELTA 512
1985 static FILE *no_pp_fp;
1986 static ListGen *no_pp_list;
1987 static int32_t no_pp_lineinc;
1989 static void no_pp_reset(char *file, int pass, ListGen * listgen,
1992 src_set_fname(nasm_strdup(file));
1995 no_pp_fp = fopen(file, "r");
1997 nasm_error(ERR_FATAL | ERR_NOFILE,
1998 "unable to open input file `%s'", file);
1999 no_pp_list = listgen;
2000 (void)pass; /* placate compilers */
2003 StrList *sl = nasm_malloc(strlen(file)+1+sizeof sl->next);
2005 strcpy(sl->str, file);
2010 static char *no_pp_getline(void)
2012 char *buffer, *p, *q;
2015 bufsize = BUF_DELTA;
2016 buffer = nasm_malloc(BUF_DELTA);
2017 src_set_linnum(src_get_linnum() + no_pp_lineinc);
2019 while (1) { /* Loop to handle %line */
2022 while (1) { /* Loop to handle long lines */
2023 q = fgets(p, bufsize - (p - buffer), no_pp_fp);
2027 if (p > buffer && p[-1] == '\n')
2029 if (p - buffer > bufsize - 10) {
2031 offset = p - buffer;
2032 bufsize += BUF_DELTA;
2033 buffer = nasm_realloc(buffer, bufsize);
2034 p = buffer + offset;
2038 if (!q && p == buffer) {
2044 * Play safe: remove CRs, LFs and any spurious ^Zs, if any of
2045 * them are present at the end of the line.
2047 buffer[strcspn(buffer, "\r\n\032")] = '\0';
2049 if (!nasm_strnicmp(buffer, "%line", 5)) {
2052 char *nm = nasm_malloc(strlen(buffer));
2053 if (sscanf(buffer + 5, "%"PRId32"+%d %s", &ln, &li, nm) == 3) {
2054 nasm_free(src_set_fname(nm));
2064 no_pp_list->line(LIST_READ, buffer);
2069 static void no_pp_cleanup(int pass)
2071 (void)pass; /* placate GCC */
2075 static uint32_t get_cpu(char *value)
2077 if (!strcmp(value, "8086"))
2079 if (!strcmp(value, "186"))
2081 if (!strcmp(value, "286"))
2083 if (!strcmp(value, "386"))
2085 if (!strcmp(value, "486"))
2087 if (!strcmp(value, "586") || !nasm_stricmp(value, "pentium"))
2089 if (!strcmp(value, "686") ||
2090 !nasm_stricmp(value, "ppro") ||
2091 !nasm_stricmp(value, "pentiumpro") || !nasm_stricmp(value, "p2"))
2093 if (!nasm_stricmp(value, "p3") || !nasm_stricmp(value, "katmai"))
2095 if (!nasm_stricmp(value, "p4") || /* is this right? -- jrc */
2096 !nasm_stricmp(value, "willamette"))
2097 return IF_WILLAMETTE;
2098 if (!nasm_stricmp(value, "prescott"))
2100 if (!nasm_stricmp(value, "x64") ||
2101 !nasm_stricmp(value, "x86-64"))
2103 if (!nasm_stricmp(value, "ia64") ||
2104 !nasm_stricmp(value, "ia-64") ||
2105 !nasm_stricmp(value, "itanium") ||
2106 !nasm_stricmp(value, "itanic") || !nasm_stricmp(value, "merced"))
2109 nasm_error(pass0 < 2 ? ERR_NONFATAL : ERR_FATAL,
2110 "unknown 'cpu' type");
2112 return IF_PLEVEL; /* the maximum level */
2115 static int get_bits(char *value)
2119 if ((i = atoi(value)) == 16)
2120 return i; /* set for a 16-bit segment */
2123 nasm_error(ERR_NONFATAL,
2124 "cannot specify 32-bit segment on processor below a 386");
2127 } else if (i == 64) {
2128 if (cpu < IF_X86_64) {
2129 nasm_error(ERR_NONFATAL,
2130 "cannot specify 64-bit segment on processor below an x86-64");
2134 nasm_error(ERR_NONFATAL,
2135 "%s output format does not support 64-bit code",
2140 nasm_error(pass0 < 2 ? ERR_NONFATAL : ERR_FATAL,
2141 "`%s' is not a valid segment size; must be 16, 32 or 64",