1 /* ----------------------------------------------------------------------- *
3 * Copyright 1996-2011 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"
65 * This is the maximum number of optimization passes to do. If we ever
66 * find a case where the optimizer doesn't naturally converge, we might
67 * have to drop this value so the assembler doesn't appear to just hang.
69 #define MAX_OPTIMIZE (INT_MAX >> 1)
71 struct forwrefinfo { /* info held on forward refs. */
76 static int get_bits(char *value);
77 static uint32_t get_cpu(char *cpu_str);
78 static void parse_cmdline(int, char **);
79 static void assemble_file(char *, StrList **);
80 static void nasm_verror_gnu(int severity, const char *fmt, va_list args);
81 static void nasm_verror_vc(int severity, const char *fmt, va_list args);
82 static void nasm_verror_common(int severity, const char *fmt, va_list args);
83 static bool is_suppressed_warning(int severity);
84 static void usage(void);
86 static int using_debug_info, opt_verbose_info;
87 bool tasm_compatible_mode = false;
92 static time_t official_compile_time;
94 static char inname[FILENAME_MAX];
95 static char outname[FILENAME_MAX];
96 static char listname[FILENAME_MAX];
97 static char errname[FILENAME_MAX];
98 static int globallineno; /* for forward-reference tracking */
99 /* static int pass = 0; */
100 struct ofmt *ofmt = &OF_DEFAULT;
101 struct ofmt_alias *ofmt_alias = NULL;
102 const struct dfmt *dfmt;
104 static FILE *error_file; /* Where to write error messages */
107 int optimizing = MAX_OPTIMIZE; /* number of optimization passes to take */
108 static int sb, cmd_sb = 16; /* by default */
109 static uint32_t cmd_cpu = IF_PLEVEL; /* highest level by default */
110 static uint32_t cpu = IF_PLEVEL; /* passed to insn_size & assemble.c */
111 int64_t global_offset_changed; /* referenced in labels.c */
112 int64_t prev_offset_changed;
115 static struct location location;
116 int in_abs_seg; /* Flag we are in ABSOLUTE seg */
117 int32_t abs_seg; /* ABSOLUTE segment basis */
118 int32_t abs_offset; /* ABSOLUTE offset */
120 static struct RAA *offsets;
122 static struct SAA *forwrefs; /* keep track of forward references */
123 static const struct forwrefinfo *forwref;
125 static struct preproc_ops *preproc;
128 op_normal, /* Preprocess and assemble */
129 op_preprocess, /* Preprocess only */
130 op_depend, /* Generate dependencies */
132 static enum op_type operating_mode;
133 /* Dependency flags */
134 static bool depend_emit_phony = false;
135 static bool depend_missing_ok = false;
136 static const char *depend_target = NULL;
137 static const char *depend_file = NULL;
140 * Which of the suppressible warnings are suppressed. Entry zero
141 * isn't an actual warning, but it used for -w+error/-Werror.
144 static bool warning_on[ERR_WARN_MAX+1]; /* Current state */
145 static bool warning_on_global[ERR_WARN_MAX+1]; /* Command-line state */
147 static const struct warning {
151 } warnings[ERR_WARN_MAX+1] = {
152 {"error", "treat warnings as errors", false},
153 {"macro-params", "macro calls with wrong parameter count", true},
154 {"macro-selfref", "cyclic macro references", false},
155 {"macro-defaults", "macros with more default than optional parameters", true},
156 {"orphan-labels", "labels alone on lines without trailing `:'", true},
157 {"number-overflow", "numeric constant does not fit", true},
158 {"gnu-elf-extensions", "using 8- or 16-bit relocation in ELF32, a GNU extension", false},
159 {"float-overflow", "floating point overflow", true},
160 {"float-denorm", "floating point denormal", false},
161 {"float-underflow", "floating point underflow", false},
162 {"float-toolong", "too many digits in floating-point number", true},
163 {"user", "%warning directives", true},
167 * This is a null preprocessor which just copies lines from input
168 * to output. It's used when someone explicitly requests that NASM
169 * not preprocess their source file.
172 static void no_pp_reset(char *file, int pass, ListGen *listgen, StrList **deplist);
173 static char *no_pp_getline(void);
174 static void no_pp_cleanup(int pass);
176 static struct preproc_ops no_pp = {
183 * get/set current offset...
185 #define GET_CURR_OFFS (in_abs_seg?abs_offset:\
186 raa_read(offsets,location.segment))
187 #define SET_CURR_OFFS(x) (in_abs_seg?(void)(abs_offset=(x)):\
188 (void)(offsets=raa_write(offsets,location.segment,(x))))
190 static bool want_usage;
191 static bool terminate_after_phase;
192 int user_nolist = 0; /* fbk 9/2/00 */
194 static void nasm_fputs(const char *line, FILE * outfile)
197 fputs(line, outfile);
203 /* Convert a struct tm to a POSIX-style time constant */
204 static int64_t posix_mktime(struct tm *tm)
207 int64_t y = tm->tm_year;
209 /* See IEEE 1003.1:2004, section 4.14 */
211 t = (y-70)*365 + (y-69)/4 - (y-1)/100 + (y+299)/400;
223 static void define_macros_early(void)
226 struct tm lt, *lt_p, gm, *gm_p;
229 lt_p = localtime(&official_compile_time);
233 strftime(temp, sizeof temp, "__DATE__=\"%Y-%m-%d\"", <);
235 strftime(temp, sizeof temp, "__DATE_NUM__=%Y%m%d", <);
237 strftime(temp, sizeof temp, "__TIME__=\"%H:%M:%S\"", <);
239 strftime(temp, sizeof temp, "__TIME_NUM__=%H%M%S", <);
243 gm_p = gmtime(&official_compile_time);
247 strftime(temp, sizeof temp, "__UTC_DATE__=\"%Y-%m-%d\"", &gm);
249 strftime(temp, sizeof temp, "__UTC_DATE_NUM__=%Y%m%d", &gm);
251 strftime(temp, sizeof temp, "__UTC_TIME__=\"%H:%M:%S\"", &gm);
253 strftime(temp, sizeof temp, "__UTC_TIME_NUM__=%H%M%S", &gm);
258 posix_time = posix_mktime(&gm);
260 posix_time = posix_mktime(<);
265 snprintf(temp, sizeof temp, "__POSIX_TIME__=%"PRId64, posix_time);
270 static void define_macros_late(void)
275 * In case if output format is defined by alias
276 * we have to put shortname of the alias itself here
277 * otherwise ABI backward compatibility gets broken.
279 snprintf(temp, sizeof(temp), "__OUTPUT_FORMAT__=%s",
280 ofmt_alias ? ofmt_alias->shortname : ofmt->shortname);
284 static void emit_dependencies(StrList *list)
290 if (depend_file && strcmp(depend_file, "-")) {
291 deps = fopen(depend_file, "w");
293 nasm_error(ERR_NONFATAL|ERR_NOFILE|ERR_USAGE,
294 "unable to write dependency file `%s'", depend_file);
301 linepos = fprintf(deps, "%s:", depend_target);
302 list_for_each(l, list) {
303 len = strlen(l->str);
304 if (linepos + len > 62) {
305 fprintf(deps, " \\\n ");
308 fprintf(deps, " %s", l->str);
311 fprintf(deps, "\n\n");
313 list_for_each_safe(l, nl, list) {
314 if (depend_emit_phony)
315 fprintf(deps, "%s:\n\n", l->str);
323 int main(int argc, char **argv)
325 StrList *depend_list = NULL, **depend_ptr;
327 time(&official_compile_time);
330 want_usage = terminate_after_phase = false;
331 nasm_set_verror(nasm_verror_gnu);
337 nasm_init_malloc_error();
338 offsets = raa_init();
339 forwrefs = saa_init((int32_t)sizeof(struct forwrefinfo));
342 operating_mode = op_normal;
346 /* Define some macros dependent on the runtime, but not
347 on the command line. */
348 define_macros_early();
350 parse_cmdline(argc, argv);
352 if (terminate_after_phase) {
358 /* If debugging info is disabled, suppress any debug calls */
359 if (!using_debug_info)
360 ofmt->current_dfmt = &null_debug_form;
363 pp_extra_stdmac(ofmt->stdmac);
364 parser_global_info(&location);
365 eval_global_info(ofmt, lookup_label, &location);
367 /* define some macros dependent of command-line */
368 define_macros_late();
370 depend_ptr = (depend_file || (operating_mode == op_depend))
371 ? &depend_list : NULL;
373 depend_target = outname;
375 switch (operating_mode) {
380 if (depend_missing_ok)
381 pp_include_path(NULL); /* "assume generated" */
383 preproc->reset(inname, 0, &nasmlist, depend_ptr);
384 if (outname[0] == '\0')
385 ofmt->filename(inname, outname);
387 while ((line = preproc->getline()))
396 char *file_name = NULL;
397 int32_t prior_linnum = 0;
401 ofile = fopen(outname, "w");
403 nasm_error(ERR_FATAL | ERR_NOFILE,
404 "unable to open output file `%s'",
409 location.known = false;
412 preproc->reset(inname, 3, &nasmlist, depend_ptr);
414 while ((line = preproc->getline())) {
416 * We generate %line directives if needed for later programs
418 int32_t linnum = prior_linnum += lineinc;
419 int altline = src_get(&linnum, &file_name);
421 if (altline == 1 && lineinc == 1)
422 nasm_fputs("", ofile);
424 lineinc = (altline != -1 || lineinc != 1);
425 fprintf(ofile ? ofile : stdout,
426 "%%line %"PRId32"+%d %s\n", linnum, lineinc,
429 prior_linnum = linnum;
431 nasm_fputs(line, ofile);
434 nasm_free(file_name);
438 if (ofile && terminate_after_phase)
447 * We must call ofmt->filename _anyway_, even if the user
448 * has specified their own output file, because some
449 * formats (eg OBJ and COFF) use ofmt->filename to find out
450 * the name of the input file and then put that inside the
453 ofmt->filename(inname, outname);
455 ofile = fopen(outname, (ofmt->flags & OFMT_TEXT) ? "w" : "wb");
457 nasm_error(ERR_FATAL | ERR_NOFILE,
458 "unable to open output file `%s'", outname);
462 * We must call init_labels() before ofmt->init() since
463 * some object formats will want to define labels in their
464 * init routines. (eg OS/2 defines the FLAT group)
469 dfmt = ofmt->current_dfmt;
472 assemble_file(inname, depend_ptr);
474 if (!terminate_after_phase) {
475 ofmt->cleanup(using_debug_info);
479 nasm_error(ERR_NONFATAL|ERR_NOFILE,
480 "write error on output file `%s'", outname);
486 if (terminate_after_phase)
494 if (depend_list && !terminate_after_phase)
495 emit_dependencies(depend_list);
505 return terminate_after_phase;
509 * Get a parameter for a command line option.
510 * First arg must be in the form of e.g. -f...
512 static char *get_param(char *p, char *q, bool *advance)
515 if (p[2]) /* the parameter's in the option */
516 return nasm_skip_spaces(p + 2);
521 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
522 "option `-%c' requires an argument", p[1]);
529 static void copy_filename(char *dst, const char *src)
531 size_t len = strlen(src);
533 if (len >= (size_t)FILENAME_MAX) {
534 nasm_error(ERR_FATAL | ERR_NOFILE, "file name too long");
537 strncpy(dst, src, FILENAME_MAX);
541 * Convert a string to Make-safe form
543 static char *quote_for_make(const char *str)
548 size_t n = 1; /* Terminating zero */
554 for (p = str; *p; p++) {
558 /* Convert N backslashes + ws -> 2N+1 backslashes + ws */
578 /* Convert N backslashes at the end of filename to 2N backslashes */
582 os = q = nasm_malloc(n);
585 for (p = str; *p; p++) {
628 #define OPT_POSTFIX 1
629 struct textargs textopts[] = {
630 {"prefix", OPT_PREFIX},
631 {"postfix", OPT_POSTFIX},
635 static bool stopoptions = false;
636 static bool process_arg(char *p, char *q)
640 bool advance = false;
646 if (p[0] == '-' && !stopoptions) {
647 if (strchr("oOfpPdDiIlFXuUZwW", p[1])) {
648 /* These parameters take values */
649 if (!(param = get_param(p, q, &advance)))
658 case 'o': /* output file */
659 copy_filename(outname, param);
662 case 'f': /* output format */
663 ofmt = ofmt_find(param, &ofmt_alias);
665 nasm_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
666 "unrecognised output format `%s' - "
667 "use -hf for a list", param);
671 case 'O': /* Optimization level */
676 /* Naked -O == -Ox */
677 optimizing = MAX_OPTIMIZE;
681 case '0': case '1': case '2': case '3': case '4':
682 case '5': case '6': case '7': case '8': case '9':
683 opt = strtoul(param, ¶m, 10);
685 /* -O0 -> optimizing == -1, 0.98 behaviour */
686 /* -O1 -> optimizing == 0, 0.98.09 behaviour */
688 optimizing = opt - 1;
696 opt_verbose_info = true;
701 optimizing = MAX_OPTIMIZE;
705 nasm_error(ERR_FATAL,
706 "unknown optimization option -O%c\n",
711 if (optimizing > MAX_OPTIMIZE)
712 optimizing = MAX_OPTIMIZE;
717 case 'p': /* pre-include */
719 pp_pre_include(param);
722 case 'd': /* pre-define */
724 pp_pre_define(param);
727 case 'u': /* un-define */
729 pp_pre_undefine(param);
732 case 'i': /* include search path */
734 pp_include_path(param);
737 case 'l': /* listing file */
738 copy_filename(listname, param);
741 case 'Z': /* error messages file */
742 copy_filename(errname, param);
745 case 'F': /* specify debug format */
746 ofmt->current_dfmt = dfmt_find(ofmt, param);
747 if (!ofmt->current_dfmt) {
748 nasm_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
749 "unrecognized debug format `%s' for"
750 " output format `%s'",
751 param, ofmt->shortname);
753 using_debug_info = true;
756 case 'X': /* specify error reporting format */
757 if (nasm_stricmp("vc", param) == 0)
758 nasm_set_verror(nasm_verror_vc);
759 else if (nasm_stricmp("gnu", param) == 0)
760 nasm_set_verror(nasm_verror_gnu);
762 nasm_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
763 "unrecognized error reporting format `%s'",
768 using_debug_info = true;
773 ("usage: nasm [-@ response file] [-o outfile] [-f format] "
775 " [options...] [--] filename\n"
776 " or nasm -v for version info\n\n"
777 " -t assemble in SciTech TASM compatible mode\n"
778 " -g generate debug information in selected format\n");
780 (" -E (or -e) preprocess only (writes output to stdout by default)\n"
781 " -a don't preprocess (assemble only)\n"
782 " -M generate Makefile dependencies on stdout\n"
783 " -MG d:o, missing files assumed generated\n"
784 " -MF <file> set Makefile dependency file\n"
785 " -MD <file> assemble and generate dependencies\n"
786 " -MT <file> dependency target name\n"
787 " -MQ <file> dependency target name (quoted)\n"
788 " -MP emit phony target\n\n"
789 " -Z<file> redirect error messages to file\n"
790 " -s redirect error messages to stdout\n\n"
791 " -F format select a debugging format\n\n"
792 " -I<path> adds a pathname to the include file path\n");
794 (" -O<digit> optimize branch offsets\n"
795 " -O0: No optimization (default)\n"
796 " -O1: Minimal optimization\n"
797 " -Ox: Multipass optimization (recommended)\n\n"
798 " -P<file> pre-includes a file\n"
799 " -D<macro>[=<value>] pre-defines a macro\n"
800 " -U<macro> undefines a macro\n"
801 " -X<format> specifies error reporting format (gnu or vc)\n"
802 " -w+foo enables warning foo (equiv. -Wfoo)\n"
803 " -w-foo disable warning foo (equiv. -Wno-foo)\n\n"
804 "--prefix,--postfix\n"
805 " this options prepend or append the given argument to all\n"
806 " extern and global variables\n\n"
808 for (i = 0; i <= ERR_WARN_MAX; i++)
809 printf(" %-23s %s (default %s)\n",
810 warnings[i].name, warnings[i].help,
811 warnings[i].enabled ? "on" : "off");
813 ("\nresponse files should contain command line parameters"
814 ", one per line.\n");
816 printf("\nvalid output formats for -f are"
817 " (`*' denotes default):\n");
818 ofmt_list(ofmt, stdout);
820 printf("\nFor a list of valid output formats, use -hf.\n");
821 printf("For a list of debug formats, use -f <form> -y.\n");
823 exit(0); /* never need usage message here */
827 printf("\nvalid debug formats for '%s' output format are"
828 " ('*' denotes default):\n", ofmt->shortname);
829 dfmt_list(ofmt, stdout);
834 tasm_compatible_mode = true;
838 printf("NASM version %s compiled on %s%s\n",
839 nasm_version, nasm_date, nasm_compile_options);
840 exit(0); /* never need usage message here */
843 case 'e': /* preprocess only */
845 operating_mode = op_preprocess;
848 case 'a': /* assemble only - don't preprocess */
853 if (param[0] == 'n' && param[1] == 'o' && param[2] == '-') {
862 if (param[0] != '+' && param[0] != '-') {
863 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
864 "invalid option to `-w'");
867 do_warn = (param[0] == '+');
871 for (i = 0; i <= ERR_WARN_MAX; i++)
872 if (!nasm_stricmp(param, warnings[i].name))
874 if (i <= ERR_WARN_MAX)
875 warning_on_global[i] = do_warn;
876 else if (!nasm_stricmp(param, "all"))
877 for (i = 1; i <= ERR_WARN_MAX; i++)
878 warning_on_global[i] = do_warn;
879 else if (!nasm_stricmp(param, "none"))
880 for (i = 1; i <= ERR_WARN_MAX; i++)
881 warning_on_global[i] = !do_warn;
883 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
884 "invalid warning `%s'", param);
890 operating_mode = op_depend;
893 operating_mode = op_depend;
894 depend_missing_ok = true;
897 depend_emit_phony = true;
908 depend_target = quote_for_make(q);
912 nasm_error(ERR_NONFATAL|ERR_NOFILE|ERR_USAGE,
913 "unknown dependency option `-M%c'", p[2]);
916 if (advance && (!q || !q[0])) {
917 nasm_error(ERR_NONFATAL|ERR_NOFILE|ERR_USAGE,
918 "option `-M%c' requires a parameter", p[2]);
927 if (p[2] == 0) { /* -- => stop processing options */
931 for (s = 0; textopts[s].label; s++) {
932 if (!nasm_stricmp(p + 2, textopts[s].label)) {
943 nasm_error(ERR_NONFATAL | ERR_NOFILE |
945 "option `--%s' requires an argument",
949 advance = 1, param = q;
952 if (s == OPT_PREFIX) {
953 strncpy(lprefix, param, PREFIX_MAX - 1);
954 lprefix[PREFIX_MAX - 1] = 0;
957 if (s == OPT_POSTFIX) {
958 strncpy(lpostfix, param, POSTFIX_MAX - 1);
959 lpostfix[POSTFIX_MAX - 1] = 0;
966 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
967 "unrecognised option `--%s'", p + 2);
975 if (!ofmt->setinfo(GI_SWITCH, &p))
976 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
977 "unrecognised option `-%c'", p[1]);
982 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
983 "more than one input file specified");
985 copy_filename(inname, p);
992 #define ARG_BUF_DELTA 128
994 static void process_respfile(FILE * rfile)
996 char *buffer, *p, *q, *prevarg;
997 int bufsize, prevargsize;
999 bufsize = prevargsize = ARG_BUF_DELTA;
1000 buffer = nasm_malloc(ARG_BUF_DELTA);
1001 prevarg = nasm_malloc(ARG_BUF_DELTA);
1004 while (1) { /* Loop to handle all lines in file */
1006 while (1) { /* Loop to handle long lines */
1007 q = fgets(p, bufsize - (p - buffer), rfile);
1011 if (p > buffer && p[-1] == '\n')
1013 if (p - buffer > bufsize - 10) {
1015 offset = p - buffer;
1016 bufsize += ARG_BUF_DELTA;
1017 buffer = nasm_realloc(buffer, bufsize);
1018 p = buffer + offset;
1022 if (!q && p == buffer) {
1024 process_arg(prevarg, NULL);
1031 * Play safe: remove CRs, LFs and any spurious ^Zs, if any of
1032 * them are present at the end of the line.
1034 *(p = &buffer[strcspn(buffer, "\r\n\032")]) = '\0';
1036 while (p > buffer && nasm_isspace(p[-1]))
1039 p = nasm_skip_spaces(buffer);
1041 if (process_arg(prevarg, p))
1044 if ((int) strlen(p) > prevargsize - 10) {
1045 prevargsize += ARG_BUF_DELTA;
1046 prevarg = nasm_realloc(prevarg, prevargsize);
1048 strncpy(prevarg, p, prevargsize);
1052 /* Function to process args from a string of args, rather than the
1053 * argv array. Used by the environment variable and response file
1056 static void process_args(char *args)
1058 char *p, *q, *arg, *prevarg;
1059 char separator = ' ';
1062 if (*p && *p != '-')
1067 while (*p && *p != separator)
1069 while (*p == separator)
1073 if (process_arg(prevarg, arg))
1077 process_arg(arg, NULL);
1080 static void process_response_file(const char *file)
1083 FILE *f = fopen(file, "r");
1088 while (fgets(str, sizeof str, f)) {
1094 static void parse_cmdline(int argc, char **argv)
1097 char *envreal, *envcopy = NULL, *p, *arg;
1100 *inname = *outname = *listname = *errname = '\0';
1101 for (i = 0; i <= ERR_WARN_MAX; i++)
1102 warning_on_global[i] = warnings[i].enabled;
1105 * First, process the NASMENV environment variable.
1107 envreal = getenv("NASMENV");
1110 envcopy = nasm_strdup(envreal);
1111 process_args(envcopy);
1116 * Now process the actual command line.
1121 if (argv[0][0] == '@') {
1122 /* We have a response file, so process this as a set of
1123 * arguments like the environment variable. This allows us
1124 * to have multiple arguments on a single line, which is
1125 * different to the -@resp file processing below for regular
1128 process_response_file(argv[0]+1);
1132 if (!stopoptions && argv[0][0] == '-' && argv[0][1] == '@') {
1133 p = get_param(argv[0], argc > 1 ? argv[1] : NULL, &advance);
1135 rfile = fopen(p, "r");
1137 process_respfile(rfile);
1140 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
1141 "unable to open response file `%s'", p);
1144 advance = process_arg(argv[0], argc > 1 ? argv[1] : NULL);
1145 argv += advance, argc -= advance;
1148 /* Look for basic command line typos. This definitely doesn't
1149 catch all errors, but it might help cases of fumbled fingers. */
1151 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
1152 "no input file specified");
1153 else if (!strcmp(inname, errname) ||
1154 !strcmp(inname, outname) ||
1155 !strcmp(inname, listname) ||
1156 (depend_file && !strcmp(inname, depend_file)))
1157 nasm_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
1158 "file `%s' is both input and output file",
1162 error_file = fopen(errname, "w");
1164 error_file = stderr; /* Revert to default! */
1165 nasm_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
1166 "cannot open file `%s' for error messages",
1172 static enum directives getkw(char **directive, char **value);
1174 static void assemble_file(char *fname, StrList **depend_ptr)
1176 char *directive, *value, *p, *q, *special, *line;
1182 struct tokenval tokval;
1186 if (cmd_sb == 32 && cmd_cpu < IF_386)
1187 nasm_error(ERR_FATAL, "command line: "
1188 "32-bit segment size requires a higher cpu");
1190 pass_max = prev_offset_changed = (INT_MAX >> 1) + 2; /* Almost unlimited */
1191 for (passn = 1; pass0 <= 2; passn++) {
1195 pass1 = pass0 == 2 ? 2 : 1; /* 1, 1, 1, ..., 1, 2 */
1196 pass2 = passn > 1 ? 2 : 1; /* 1, 2, 2, ..., 2, 2 */
1197 /* pass0 0, 0, 0, ..., 1, 2 */
1199 def_label = passn > 1 ? redefine_label : define_label;
1201 globalbits = sb = cmd_sb; /* set 'bits' to command line default */
1205 nasmlist.init(listname, nasm_error);
1208 global_offset_changed = 0; /* set by redefine_label */
1209 location.segment = ofmt->section(NULL, pass2, &sb);
1212 saa_rewind(forwrefs);
1213 forwref = saa_rstruct(forwrefs);
1215 offsets = raa_init();
1217 preproc->reset(fname, pass1, &nasmlist,
1218 pass1 == 2 ? depend_ptr : NULL);
1219 memcpy(warning_on, warning_on_global, (ERR_WARN_MAX+1) * sizeof(bool));
1223 location.known = true;
1224 location.offset = offs = GET_CURR_OFFS;
1226 while ((line = preproc->getline())) {
1231 * Here we parse our directives; this is not handled by the
1232 * 'real' parser. This really should be a separate function.
1235 d = getkw(&directive, &value);
1240 case D_SEGMENT: /* [SEGMENT n] */
1242 seg = ofmt->section(value, pass2, &sb);
1243 if (seg == NO_SEG) {
1244 nasm_error(pass1 == 1 ? ERR_NONFATAL : ERR_PANIC,
1245 "segment name `%s' not recognized",
1249 location.segment = seg;
1252 case D_SECTALIGN: /* [SECTALIGN n] */
1256 tokval.t_type = TOKEN_INVALID;
1257 e = evaluate(stdscan, NULL, &tokval, NULL, pass2, nasm_error, NULL);
1259 unsigned int align = (unsigned int)e->value;
1260 if ((uint64_t)e->value > 0x7fffffff) {
1262 * FIXME: Please make some sane message here
1263 * ofmt should have some 'check' method which
1264 * would report segment alignment bounds.
1266 nasm_error(ERR_FATAL,
1267 "incorrect segment alignment `%s'", value);
1268 } else if (!is_power2(align)) {
1269 nasm_error(ERR_NONFATAL,
1270 "segment alignment `%s' is not power of two",
1273 /* callee should be able to handle all details */
1274 ofmt->sectalign(location.segment, align);
1278 case D_EXTERN: /* [EXTERN label:special] */
1280 value++; /* skip initial $ if present */
1283 while (*q && *q != ':')
1287 ofmt->symdef(value, 0L, 0L, 3, q);
1289 } else if (passn == 1) {
1294 while (*q && *q != ':') {
1300 nasm_error(ERR_NONFATAL,
1301 "identifier expected after EXTERN");
1309 if (!is_extern(value)) { /* allow re-EXTERN to be ignored */
1311 pass0 = 1; /* fake pass 1 in labels.c */
1312 declare_as_global(value, special);
1313 define_label(value, seg_alloc(), 0L, NULL,
1317 } /* else pass0 == 1 */
1319 case D_BITS: /* [BITS bits] */
1320 globalbits = sb = get_bits(value);
1322 case D_GLOBAL: /* [GLOBAL symbol:special] */
1324 value++; /* skip initial $ if present */
1325 if (pass0 == 2) { /* pass 2 */
1327 while (*q && *q != ':')
1331 ofmt->symdef(value, 0L, 0L, 3, q);
1333 } else if (pass2 == 1) { /* pass == 1 */
1338 while (*q && *q != ':') {
1344 nasm_error(ERR_NONFATAL,
1345 "identifier expected after GLOBAL");
1353 declare_as_global(value, special);
1356 case D_COMMON: /* [COMMON symbol size:special] */
1361 value++; /* skip initial $ if present */
1366 while (*p && !nasm_isspace(*p)) {
1372 nasm_error(ERR_NONFATAL,
1373 "identifier expected after COMMON");
1377 p = nasm_zap_spaces_fwd(p);
1379 while (*q && *q != ':')
1387 size = readnum(p, &rn_error);
1389 nasm_error(ERR_NONFATAL,
1390 "invalid size specified"
1391 " in COMMON declaration");
1395 nasm_error(ERR_NONFATAL,
1396 "no size specified in"
1397 " COMMON declaration");
1402 define_common(value, seg_alloc(), size, special);
1403 } else if (pass0 == 2) {
1405 ofmt->symdef(value, 0L, 0L, 3, special);
1409 case D_ABSOLUTE: /* [ABSOLUTE address] */
1412 tokval.t_type = TOKEN_INVALID;
1413 e = evaluate(stdscan, NULL, &tokval, NULL, pass2,
1418 1 ? ERR_NONFATAL : ERR_PANIC,
1419 "cannot use non-relocatable expression as "
1420 "ABSOLUTE address");
1422 abs_seg = reloc_seg(e);
1423 abs_offset = reloc_value(e);
1425 } else if (passn == 1)
1426 abs_offset = 0x100; /* don't go near zero in case of / */
1428 nasm_error(ERR_PANIC, "invalid ABSOLUTE address "
1431 location.segment = NO_SEG;
1433 case D_DEBUG: /* [DEBUG] */
1436 bool badid, overlong;
1440 badid = overlong = false;
1441 if (!isidstart(*p)) {
1444 while (*p && !nasm_isspace(*p)) {
1445 if (q >= debugid + sizeof debugid - 1) {
1456 nasm_error(passn == 1 ? ERR_NONFATAL : ERR_PANIC,
1457 "identifier expected after DEBUG");
1461 nasm_error(passn == 1 ? ERR_NONFATAL : ERR_PANIC,
1462 "DEBUG identifier too long");
1465 p = nasm_skip_spaces(p);
1467 dfmt->debug_directive(debugid, p);
1470 case D_WARNING: /* [WARNING {+|-|*}warn-name] */
1471 value = nasm_skip_spaces(value);
1473 case '-': validid = 0; value++; break;
1474 case '+': validid = 1; value++; break;
1475 case '*': validid = 2; value++; break;
1476 default: validid = 1; break;
1479 for (i = 1; i <= ERR_WARN_MAX; i++)
1480 if (!nasm_stricmp(value, warnings[i].name))
1482 if (i <= ERR_WARN_MAX) {
1485 warning_on[i] = false;
1488 warning_on[i] = true;
1491 warning_on[i] = warning_on_global[i];
1496 nasm_error(ERR_NONFATAL,
1497 "invalid warning id in WARNING directive");
1499 case D_CPU: /* [CPU] */
1500 cpu = get_cpu(value);
1502 case D_LIST: /* [LIST {+|-}] */
1503 value = nasm_skip_spaces(value);
1504 if (*value == '+') {
1507 if (*value == '-') {
1514 case D_DEFAULT: /* [DEFAULT] */
1517 tokval.t_type = TOKEN_INVALID;
1518 if (stdscan(NULL, &tokval) == TOKEN_SPECIAL) {
1519 switch ((int)tokval.t_integer) {
1535 if (float_option(value)) {
1536 nasm_error(pass1 == 1 ? ERR_NONFATAL : ERR_PANIC,
1537 "unknown 'float' directive: %s",
1542 if (ofmt->directive(d, value, pass2))
1544 /* else fall through */
1546 nasm_error(pass1 == 1 ? ERR_NONFATAL : ERR_PANIC,
1547 "unrecognised directive [%s]",
1552 nasm_error(ERR_NONFATAL,
1553 "invalid parameter to [%s] directive",
1556 } else { /* it isn't a directive */
1557 parse_line(pass1, line, &output_ins, def_label);
1559 if (optimizing > 0) {
1560 if (forwref != NULL && globallineno == forwref->lineno) {
1561 output_ins.forw_ref = true;
1563 output_ins.oprs[forwref->operand].opflags |= OPFLAG_FORWARD;
1564 forwref = saa_rstruct(forwrefs);
1565 } while (forwref != NULL
1566 && forwref->lineno == globallineno);
1568 output_ins.forw_ref = false;
1570 if (output_ins.forw_ref) {
1572 for (i = 0; i < output_ins.operands; i++) {
1573 if (output_ins.oprs[i].opflags & OPFLAG_FORWARD) {
1574 struct forwrefinfo *fwinf =
1575 (struct forwrefinfo *)
1576 saa_wstruct(forwrefs);
1577 fwinf->lineno = globallineno;
1586 if (output_ins.opcode == I_EQU) {
1589 * Special `..' EQUs get processed in pass two,
1590 * except `..@' macro-processor EQUs which are done
1591 * in the normal place.
1593 if (!output_ins.label)
1594 nasm_error(ERR_NONFATAL,
1595 "EQU not preceded by label");
1597 else if (output_ins.label[0] != '.' ||
1598 output_ins.label[1] != '.' ||
1599 output_ins.label[2] == '@') {
1600 if (output_ins.operands == 1 &&
1601 (output_ins.oprs[0].type & IMMEDIATE) &&
1602 output_ins.oprs[0].wrt == NO_SEG) {
1603 bool isext = !!(output_ins.oprs[0].opflags
1605 def_label(output_ins.label,
1606 output_ins.oprs[0].segment,
1607 output_ins.oprs[0].offset, NULL,
1609 } else if (output_ins.operands == 2
1610 && (output_ins.oprs[0].type & IMMEDIATE)
1611 && (output_ins.oprs[0].type & COLON)
1612 && output_ins.oprs[0].segment == NO_SEG
1613 && output_ins.oprs[0].wrt == NO_SEG
1614 && (output_ins.oprs[1].type & IMMEDIATE)
1615 && output_ins.oprs[1].segment == NO_SEG
1616 && output_ins.oprs[1].wrt == NO_SEG) {
1617 def_label(output_ins.label,
1618 output_ins.oprs[0].offset | SEG_ABS,
1619 output_ins.oprs[1].offset,
1620 NULL, false, false);
1622 nasm_error(ERR_NONFATAL,
1623 "bad syntax for EQU");
1627 * Special `..' EQUs get processed here, except
1628 * `..@' macro processor EQUs which are done above.
1630 if (output_ins.label[0] == '.' &&
1631 output_ins.label[1] == '.' &&
1632 output_ins.label[2] != '@') {
1633 if (output_ins.operands == 1 &&
1634 (output_ins.oprs[0].type & IMMEDIATE)) {
1635 define_label(output_ins.label,
1636 output_ins.oprs[0].segment,
1637 output_ins.oprs[0].offset,
1638 NULL, false, false);
1639 } else if (output_ins.operands == 2
1640 && (output_ins.oprs[0].type & IMMEDIATE)
1641 && (output_ins.oprs[0].type & COLON)
1642 && output_ins.oprs[0].segment == NO_SEG
1643 && (output_ins.oprs[1].type & IMMEDIATE)
1644 && output_ins.oprs[1].segment == NO_SEG) {
1645 define_label(output_ins.label,
1646 output_ins.oprs[0].offset | SEG_ABS,
1647 output_ins.oprs[1].offset,
1648 NULL, false, false);
1650 nasm_error(ERR_NONFATAL,
1651 "bad syntax for EQU");
1654 } else { /* instruction isn't an EQU */
1658 int64_t l = insn_size(location.segment, offs, sb, cpu,
1659 &output_ins, nasm_error);
1661 /* if (using_debug_info) && output_ins.opcode != -1) */
1662 if (using_debug_info)
1663 { /* fbk 03/25/01 */
1664 /* this is done here so we can do debug type info */
1666 TYS_ELEMENTS(output_ins.operands);
1667 switch (output_ins.opcode) {
1670 TYS_ELEMENTS(output_ins.oprs[0].offset) | TY_BYTE;
1674 TYS_ELEMENTS(output_ins.oprs[0].offset) | TY_WORD;
1678 TYS_ELEMENTS(output_ins.oprs[0].offset) | TY_DWORD;
1682 TYS_ELEMENTS(output_ins.oprs[0].offset) | TY_QWORD;
1686 TYS_ELEMENTS(output_ins.oprs[0].offset) | TY_TBYTE;
1690 TYS_ELEMENTS(output_ins.oprs[0].offset) | TY_OWORD;
1694 TYS_ELEMENTS(output_ins.oprs[0].offset) | TY_YWORD;
1697 typeinfo |= TY_BYTE;
1700 typeinfo |= TY_WORD;
1703 if (output_ins.eops_float)
1704 typeinfo |= TY_FLOAT;
1706 typeinfo |= TY_DWORD;
1709 typeinfo |= TY_QWORD;
1712 typeinfo |= TY_TBYTE;
1715 typeinfo |= TY_OWORD;
1718 typeinfo |= TY_YWORD;
1721 typeinfo = TY_LABEL;
1725 dfmt->debug_typevalue(typeinfo);
1729 SET_CURR_OFFS(offs);
1732 * else l == -1 => invalid instruction, which will be
1733 * flagged as an error on pass 2
1737 offs += assemble(location.segment, offs, sb, cpu,
1738 &output_ins, ofmt, nasm_error,
1740 SET_CURR_OFFS(offs);
1744 cleanup_insn(&output_ins);
1747 location.offset = offs = GET_CURR_OFFS;
1748 } /* end while (line = preproc->getline... */
1750 if (pass0 == 2 && global_offset_changed && !terminate_after_phase)
1751 nasm_error(ERR_NONFATAL,
1752 "phase error detected at end of assembly.");
1755 preproc->cleanup(1);
1757 if ((passn > 1 && !global_offset_changed) || pass0 == 2) {
1759 } else if (global_offset_changed &&
1760 global_offset_changed < prev_offset_changed) {
1761 prev_offset_changed = global_offset_changed;
1767 if (terminate_after_phase)
1770 if ((stall_count > 997) || (passn >= pass_max)) {
1771 /* We get here if the labels don't converge
1772 * Example: FOO equ FOO + 1
1774 nasm_error(ERR_NONFATAL,
1775 "Can't find valid values for all labels "
1776 "after %d passes, giving up.", passn);
1777 nasm_error(ERR_NONFATAL,
1778 "Possible causes: recursive EQUs, macro abuse.");
1783 preproc->cleanup(0);
1785 if (!terminate_after_phase && opt_verbose_info) {
1786 /* -On and -Ov switches */
1787 fprintf(stdout, "info: assembly required 1+%d+1 passes\n", passn-3);
1791 static enum directives getkw(char **directive, char **value)
1795 buf = nasm_skip_spaces(*directive);
1797 /* it should be enclosed in [ ] */
1800 q = strchr(buf, ']');
1804 /* stip off the comments */
1805 p = strchr(buf, ';');
1807 if (p < q) /* ouch! somwhere inside */
1812 /* no brace, no trailing spaces */
1814 nasm_zap_spaces_rev(--q);
1817 p = nasm_skip_spaces(++buf);
1818 q = nasm_skip_word(p);
1820 return D_none; /* sigh... no value there */
1824 /* and value finally */
1825 p = nasm_skip_spaces(++q);
1828 return find_directive(*directive);
1832 * gnu style error reporting
1833 * This function prints an error message to error_file in the
1834 * style used by GNU. An example would be:
1835 * file.asm:50: error: blah blah blah
1836 * where file.asm is the name of the file, 50 is the line number on
1837 * which the error occurs (or is detected) and "error:" is one of
1838 * the possible optional diagnostics -- it can be "error" or "warning"
1839 * or something else. Finally the line terminates with the actual
1842 * @param severity the severity of the warning or error
1843 * @param fmt the printf style format string
1845 static void nasm_verror_gnu(int severity, const char *fmt, va_list ap)
1847 char *currentfile = NULL;
1850 if (is_suppressed_warning(severity))
1853 if (!(severity & ERR_NOFILE))
1854 src_get(&lineno, ¤tfile);
1857 fprintf(error_file, "%s:%"PRId32": ", currentfile, lineno);
1858 nasm_free(currentfile);
1860 fputs("nasm: ", error_file);
1863 nasm_verror_common(severity, fmt, ap);
1867 * MS style error reporting
1868 * This function prints an error message to error_file in the
1869 * style used by Visual C and some other Microsoft tools. An example
1871 * file.asm(50) : error: blah blah blah
1872 * where file.asm is the name of the file, 50 is the line number on
1873 * which the error occurs (or is detected) and "error:" is one of
1874 * the possible optional diagnostics -- it can be "error" or "warning"
1875 * or something else. Finally the line terminates with the actual
1878 * @param severity the severity of the warning or error
1879 * @param fmt the printf style format string
1881 static void nasm_verror_vc(int severity, const char *fmt, va_list ap)
1883 char *currentfile = NULL;
1886 if (is_suppressed_warning(severity))
1889 if (!(severity & ERR_NOFILE))
1890 src_get(&lineno, ¤tfile);
1893 fprintf(error_file, "%s(%"PRId32") : ", currentfile, lineno);
1894 nasm_free(currentfile);
1896 fputs("nasm: ", error_file);
1899 nasm_verror_common(severity, fmt, ap);
1903 * check for supressed warning
1904 * checks for suppressed warning or pass one only warning and we're
1907 * @param severity the severity of the warning or error
1908 * @return true if we should abort error/warning printing
1910 static bool is_suppressed_warning(int severity)
1913 * See if it's a suppressed warning.
1915 return (severity & ERR_MASK) == ERR_WARNING &&
1916 (((severity & ERR_WARN_MASK) != 0 &&
1917 !warning_on[(severity & ERR_WARN_MASK) >> ERR_WARN_SHR]) ||
1918 /* See if it's a pass-one only warning and we're not in pass one. */
1919 ((severity & ERR_PASS1) && pass0 != 1) ||
1920 ((severity & ERR_PASS2) && pass0 != 2));
1924 * common error reporting
1925 * This is the common back end of the error reporting schemes currently
1926 * implemented. It prints the nature of the warning and then the
1927 * specific error message to error_file and may or may not return. It
1928 * doesn't return if the error severity is a "panic" or "debug" type.
1930 * @param severity the severity of the warning or error
1931 * @param fmt the printf style format string
1933 static void nasm_verror_common(int severity, const char *fmt, va_list args)
1938 switch (severity & (ERR_MASK|ERR_NO_SEVERITY)) {
1959 vsnprintf(msg, sizeof msg, fmt, args);
1961 fprintf(error_file, "%s%s\n", pfx, msg);
1964 nasmlist.error(severity, pfx, msg);
1966 if (severity & ERR_USAGE)
1969 switch (severity & ERR_MASK) {
1971 /* no further action, by definition */
1974 if (warning_on[0]) /* Treat warnings as errors */
1975 terminate_after_phase = true;
1978 terminate_after_phase = true;
1988 exit(1); /* instantly die */
1989 break; /* placate silly compilers */
1992 /* abort(); *//* halt, catch fire, and dump core */
1998 static void usage(void)
2000 fputs("type `nasm -h' for help\n", error_file);
2003 #define BUF_DELTA 512
2005 static FILE *no_pp_fp;
2006 static ListGen *no_pp_list;
2007 static int32_t no_pp_lineinc;
2009 static void no_pp_reset(char *file, int pass, ListGen * listgen,
2012 src_set_fname(nasm_strdup(file));
2015 no_pp_fp = fopen(file, "r");
2017 nasm_error(ERR_FATAL | ERR_NOFILE,
2018 "unable to open input file `%s'", file);
2019 no_pp_list = listgen;
2020 (void)pass; /* placate compilers */
2023 StrList *sl = nasm_malloc(strlen(file)+1+sizeof sl->next);
2025 strcpy(sl->str, file);
2030 static char *no_pp_getline(void)
2032 char *buffer, *p, *q;
2035 bufsize = BUF_DELTA;
2036 buffer = nasm_malloc(BUF_DELTA);
2037 src_set_linnum(src_get_linnum() + no_pp_lineinc);
2039 while (1) { /* Loop to handle %line */
2042 while (1) { /* Loop to handle long lines */
2043 q = fgets(p, bufsize - (p - buffer), no_pp_fp);
2047 if (p > buffer && p[-1] == '\n')
2049 if (p - buffer > bufsize - 10) {
2051 offset = p - buffer;
2052 bufsize += BUF_DELTA;
2053 buffer = nasm_realloc(buffer, bufsize);
2054 p = buffer + offset;
2058 if (!q && p == buffer) {
2064 * Play safe: remove CRs, LFs and any spurious ^Zs, if any of
2065 * them are present at the end of the line.
2067 buffer[strcspn(buffer, "\r\n\032")] = '\0';
2069 if (!nasm_strnicmp(buffer, "%line", 5)) {
2072 char *nm = nasm_malloc(strlen(buffer));
2073 if (sscanf(buffer + 5, "%"PRId32"+%d %s", &ln, &li, nm) == 3) {
2074 nasm_free(src_set_fname(nm));
2084 no_pp_list->line(LIST_READ, buffer);
2089 static void no_pp_cleanup(int pass)
2091 (void)pass; /* placate GCC */
2098 static uint32_t get_cpu(char *value)
2100 if (!strcmp(value, "8086"))
2102 if (!strcmp(value, "186"))
2104 if (!strcmp(value, "286"))
2106 if (!strcmp(value, "386"))
2108 if (!strcmp(value, "486"))
2110 if (!strcmp(value, "586") || !nasm_stricmp(value, "pentium"))
2112 if (!strcmp(value, "686") ||
2113 !nasm_stricmp(value, "ppro") ||
2114 !nasm_stricmp(value, "pentiumpro") || !nasm_stricmp(value, "p2"))
2116 if (!nasm_stricmp(value, "p3") || !nasm_stricmp(value, "katmai"))
2118 if (!nasm_stricmp(value, "p4") || /* is this right? -- jrc */
2119 !nasm_stricmp(value, "willamette"))
2120 return IF_WILLAMETTE;
2121 if (!nasm_stricmp(value, "prescott"))
2123 if (!nasm_stricmp(value, "x64") ||
2124 !nasm_stricmp(value, "x86-64"))
2126 if (!nasm_stricmp(value, "ia64") ||
2127 !nasm_stricmp(value, "ia-64") ||
2128 !nasm_stricmp(value, "itanium") ||
2129 !nasm_stricmp(value, "itanic") || !nasm_stricmp(value, "merced"))
2132 nasm_error(pass0 < 2 ? ERR_NONFATAL : ERR_FATAL,
2133 "unknown 'cpu' type");
2135 return IF_PLEVEL; /* the maximum level */
2138 static int get_bits(char *value)
2142 if ((i = atoi(value)) == 16)
2143 return i; /* set for a 16-bit segment */
2146 nasm_error(ERR_NONFATAL,
2147 "cannot specify 32-bit segment on processor below a 386");
2150 } else if (i == 64) {
2151 if (cpu < IF_X86_64) {
2152 nasm_error(ERR_NONFATAL,
2153 "cannot specify 64-bit segment on processor below an x86-64");
2157 nasm_error(ERR_NONFATAL,
2158 "%s output format does not support 64-bit code",
2163 nasm_error(pass0 < 2 ? ERR_NONFATAL : ERR_FATAL,
2164 "`%s' is not a valid segment size; must be 16, 32 or 64",