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 */
501 return nasm_skip_spaces(p + 2);
506 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
507 "option `-%c' requires an argument", p[1]);
514 static void copy_filename(char *dst, const char *src)
516 size_t len = strlen(src);
518 if (len >= (size_t)FILENAME_MAX) {
519 nasm_error(ERR_FATAL | ERR_NOFILE, "file name too long");
522 strncpy(dst, src, FILENAME_MAX);
526 * Convert a string to Make-safe form
528 static char *quote_for_make(const char *str)
533 size_t n = 1; /* Terminating zero */
539 for (p = str; *p; p++) {
543 /* Convert N backslashes + ws -> 2N+1 backslashes + ws */
563 /* Convert N backslashes at the end of filename to 2N backslashes */
567 os = q = nasm_malloc(n);
570 for (p = str; *p; p++) {
613 #define OPT_POSTFIX 1
614 struct textargs textopts[] = {
615 {"prefix", OPT_PREFIX},
616 {"postfix", OPT_POSTFIX},
620 static bool stopoptions = false;
621 static bool process_arg(char *p, char *q)
625 bool advance = false;
631 if (p[0] == '-' && !stopoptions) {
632 if (strchr("oOfpPdDiIlFXuUZwW", p[1])) {
633 /* These parameters take values */
634 if (!(param = get_param(p, q, &advance)))
643 case 'o': /* output file */
644 copy_filename(outname, param);
647 case 'f': /* output format */
648 ofmt = ofmt_find(param);
650 nasm_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
651 "unrecognised output format `%s' - "
652 "use -hf for a list", param);
656 case 'O': /* Optimization level */
661 /* Naked -O == -Ox */
662 optimizing = INT_MAX >> 1; /* Almost unlimited */
666 case '0': case '1': case '2': case '3': case '4':
667 case '5': case '6': case '7': case '8': case '9':
668 opt = strtoul(param, ¶m, 10);
670 /* -O0 -> optimizing == -1, 0.98 behaviour */
671 /* -O1 -> optimizing == 0, 0.98.09 behaviour */
673 optimizing = opt - 1;
681 opt_verbose_info = true;
686 optimizing = INT_MAX >> 1; /* Almost unlimited */
690 nasm_error(ERR_FATAL,
691 "unknown optimization option -O%c\n",
700 case 'p': /* pre-include */
702 pp_pre_include(param);
705 case 'd': /* pre-define */
707 pp_pre_define(param);
710 case 'u': /* un-define */
712 pp_pre_undefine(param);
715 case 'i': /* include search path */
717 pp_include_path(param);
720 case 'l': /* listing file */
721 copy_filename(listname, param);
724 case 'Z': /* error messages file */
725 copy_filename(errname, param);
728 case 'F': /* specify debug format */
729 ofmt->current_dfmt = dfmt_find(ofmt, param);
730 if (!ofmt->current_dfmt) {
731 nasm_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
732 "unrecognized debug format `%s' for"
733 " output format `%s'",
734 param, ofmt->shortname);
736 using_debug_info = true;
739 case 'X': /* specify error reporting format */
740 if (nasm_stricmp("vc", param) == 0)
741 nasm_set_verror(nasm_verror_vc);
742 else if (nasm_stricmp("gnu", param) == 0)
743 nasm_set_verror(nasm_verror_gnu);
745 nasm_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
746 "unrecognized error reporting format `%s'",
751 using_debug_info = true;
756 ("usage: nasm [-@ response file] [-o outfile] [-f format] "
758 " [options...] [--] filename\n"
759 " or nasm -v for version info\n\n"
760 " -t assemble in SciTech TASM compatible mode\n"
761 " -g generate debug information in selected format\n");
763 (" -E (or -e) preprocess only (writes output to stdout by default)\n"
764 " -a don't preprocess (assemble only)\n"
765 " -M generate Makefile dependencies on stdout\n"
766 " -MG d:o, missing files assumed generated\n"
767 " -MF <file> set Makefile dependency file\n"
768 " -MD <file> assemble and generate dependencies\n"
769 " -MT <file> dependency target name\n"
770 " -MQ <file> dependency target name (quoted)\n"
771 " -MP emit phony target\n\n"
772 " -Z<file> redirect error messages to file\n"
773 " -s redirect error messages to stdout\n\n"
774 " -F format select a debugging format\n\n"
775 " -I<path> adds a pathname to the include file path\n");
777 (" -O<digit> optimize branch offsets\n"
778 " -O0: No optimization (default)\n"
779 " -O1: Minimal optimization\n"
780 " -Ox: Multipass optimization (recommended)\n\n"
781 " -P<file> pre-includes a file\n"
782 " -D<macro>[=<value>] pre-defines a macro\n"
783 " -U<macro> undefines a macro\n"
784 " -X<format> specifies error reporting format (gnu or vc)\n"
785 " -w+foo enables warning foo (equiv. -Wfoo)\n"
786 " -w-foo disable warning foo (equiv. -Wno-foo)\n\n"
787 "--prefix,--postfix\n"
788 " this options prepend or append the given argument to all\n"
789 " extern and global variables\n\n"
791 for (i = 0; i <= ERR_WARN_MAX; i++)
792 printf(" %-23s %s (default %s)\n",
793 warnings[i].name, warnings[i].help,
794 warnings[i].enabled ? "on" : "off");
796 ("\nresponse files should contain command line parameters"
797 ", one per line.\n");
799 printf("\nvalid output formats for -f are"
800 " (`*' denotes default):\n");
801 ofmt_list(ofmt, stdout);
803 printf("\nFor a list of valid output formats, use -hf.\n");
804 printf("For a list of debug formats, use -f <form> -y.\n");
806 exit(0); /* never need usage message here */
810 printf("\nvalid debug formats for '%s' output format are"
811 " ('*' denotes default):\n", ofmt->shortname);
812 dfmt_list(ofmt, stdout);
817 tasm_compatible_mode = true;
821 printf("NASM version %s compiled on %s%s\n",
822 nasm_version, nasm_date, nasm_compile_options);
823 exit(0); /* never need usage message here */
826 case 'e': /* preprocess only */
828 operating_mode = op_preprocess;
831 case 'a': /* assemble only - don't preprocess */
836 if (param[0] == 'n' && param[1] == 'o' && param[2] == '-') {
845 if (param[0] != '+' && param[0] != '-') {
846 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
847 "invalid option to `-w'");
850 do_warn = (param[0] == '+');
854 for (i = 0; i <= ERR_WARN_MAX; i++)
855 if (!nasm_stricmp(param, warnings[i].name))
857 if (i <= ERR_WARN_MAX)
858 warning_on_global[i] = do_warn;
859 else if (!nasm_stricmp(param, "all"))
860 for (i = 1; i <= ERR_WARN_MAX; i++)
861 warning_on_global[i] = do_warn;
862 else if (!nasm_stricmp(param, "none"))
863 for (i = 1; i <= ERR_WARN_MAX; i++)
864 warning_on_global[i] = !do_warn;
866 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
867 "invalid warning `%s'", param);
873 operating_mode = op_depend;
876 operating_mode = op_depend;
877 depend_missing_ok = true;
880 depend_emit_phony = true;
891 depend_target = quote_for_make(q);
895 nasm_error(ERR_NONFATAL|ERR_NOFILE|ERR_USAGE,
896 "unknown dependency option `-M%c'", p[2]);
899 if (advance && (!q || !q[0])) {
900 nasm_error(ERR_NONFATAL|ERR_NOFILE|ERR_USAGE,
901 "option `-M%c' requires a parameter", p[2]);
910 if (p[2] == 0) { /* -- => stop processing options */
914 for (s = 0; textopts[s].label; s++) {
915 if (!nasm_stricmp(p + 2, textopts[s].label)) {
926 nasm_error(ERR_NONFATAL | ERR_NOFILE |
928 "option `--%s' requires an argument",
932 advance = 1, param = q;
935 if (s == OPT_PREFIX) {
936 strncpy(lprefix, param, PREFIX_MAX - 1);
937 lprefix[PREFIX_MAX - 1] = 0;
940 if (s == OPT_POSTFIX) {
941 strncpy(lpostfix, param, POSTFIX_MAX - 1);
942 lpostfix[POSTFIX_MAX - 1] = 0;
949 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
950 "unrecognised option `--%s'", p + 2);
958 if (!ofmt->setinfo(GI_SWITCH, &p))
959 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
960 "unrecognised option `-%c'", p[1]);
965 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
966 "more than one input file specified");
968 copy_filename(inname, p);
975 #define ARG_BUF_DELTA 128
977 static void process_respfile(FILE * rfile)
979 char *buffer, *p, *q, *prevarg;
980 int bufsize, prevargsize;
982 bufsize = prevargsize = ARG_BUF_DELTA;
983 buffer = nasm_malloc(ARG_BUF_DELTA);
984 prevarg = nasm_malloc(ARG_BUF_DELTA);
987 while (1) { /* Loop to handle all lines in file */
989 while (1) { /* Loop to handle long lines */
990 q = fgets(p, bufsize - (p - buffer), rfile);
994 if (p > buffer && p[-1] == '\n')
996 if (p - buffer > bufsize - 10) {
999 bufsize += ARG_BUF_DELTA;
1000 buffer = nasm_realloc(buffer, bufsize);
1001 p = buffer + offset;
1005 if (!q && p == buffer) {
1007 process_arg(prevarg, NULL);
1014 * Play safe: remove CRs, LFs and any spurious ^Zs, if any of
1015 * them are present at the end of the line.
1017 *(p = &buffer[strcspn(buffer, "\r\n\032")]) = '\0';
1019 while (p > buffer && nasm_isspace(p[-1]))
1022 p = nasm_skip_spaces(buffer);
1024 if (process_arg(prevarg, p))
1027 if ((int) strlen(p) > prevargsize - 10) {
1028 prevargsize += ARG_BUF_DELTA;
1029 prevarg = nasm_realloc(prevarg, prevargsize);
1031 strncpy(prevarg, p, prevargsize);
1035 /* Function to process args from a string of args, rather than the
1036 * argv array. Used by the environment variable and response file
1039 static void process_args(char *args)
1041 char *p, *q, *arg, *prevarg;
1042 char separator = ' ';
1045 if (*p && *p != '-')
1050 while (*p && *p != separator)
1052 while (*p == separator)
1056 if (process_arg(prevarg, arg))
1060 process_arg(arg, NULL);
1063 static void process_response_file(const char *file)
1066 FILE *f = fopen(file, "r");
1071 while (fgets(str, sizeof str, f)) {
1077 static void parse_cmdline(int argc, char **argv)
1080 char *envreal, *envcopy = NULL, *p, *arg;
1083 *inname = *outname = *listname = *errname = '\0';
1084 for (i = 0; i <= ERR_WARN_MAX; i++)
1085 warning_on_global[i] = warnings[i].enabled;
1088 * First, process the NASMENV environment variable.
1090 envreal = getenv("NASMENV");
1093 envcopy = nasm_strdup(envreal);
1094 process_args(envcopy);
1099 * Now process the actual command line.
1104 if (argv[0][0] == '@') {
1105 /* We have a response file, so process this as a set of
1106 * arguments like the environment variable. This allows us
1107 * to have multiple arguments on a single line, which is
1108 * different to the -@resp file processing below for regular
1111 process_response_file(argv[0]+1);
1115 if (!stopoptions && argv[0][0] == '-' && argv[0][1] == '@') {
1116 p = get_param(argv[0], argc > 1 ? argv[1] : NULL, &advance);
1118 rfile = fopen(p, "r");
1120 process_respfile(rfile);
1123 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
1124 "unable to open response file `%s'", p);
1127 advance = process_arg(argv[0], argc > 1 ? argv[1] : NULL);
1128 argv += advance, argc -= advance;
1131 /* Look for basic command line typos. This definitely doesn't
1132 catch all errors, but it might help cases of fumbled fingers. */
1134 nasm_error(ERR_NONFATAL | ERR_NOFILE | ERR_USAGE,
1135 "no input file specified");
1136 else if (!strcmp(inname, errname) ||
1137 !strcmp(inname, outname) ||
1138 !strcmp(inname, listname) ||
1139 (depend_file && !strcmp(inname, depend_file)))
1140 nasm_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
1141 "file `%s' is both input and output file",
1145 error_file = fopen(errname, "w");
1147 error_file = stderr; /* Revert to default! */
1148 nasm_error(ERR_FATAL | ERR_NOFILE | ERR_USAGE,
1149 "cannot open file `%s' for error messages",
1155 static enum directives getkw(char **directive, char **value);
1157 static void assemble_file(char *fname, StrList **depend_ptr)
1159 char *directive, *value, *p, *q, *special, *line;
1165 struct tokenval tokval;
1169 if (cmd_sb == 32 && cmd_cpu < IF_386)
1170 nasm_error(ERR_FATAL, "command line: "
1171 "32-bit segment size requires a higher cpu");
1173 pass_max = prev_offset_changed = (INT_MAX >> 1) + 2; /* Almost unlimited */
1174 for (passn = 1; pass0 <= 2; passn++) {
1178 pass1 = pass0 == 2 ? 2 : 1; /* 1, 1, 1, ..., 1, 2 */
1179 pass2 = passn > 1 ? 2 : 1; /* 1, 2, 2, ..., 2, 2 */
1180 /* pass0 0, 0, 0, ..., 1, 2 */
1182 def_label = passn > 1 ? redefine_label : define_label;
1184 globalbits = sb = cmd_sb; /* set 'bits' to command line default */
1188 nasmlist.init(listname, nasm_error);
1191 global_offset_changed = 0; /* set by redefine_label */
1192 location.segment = ofmt->section(NULL, pass2, &sb);
1195 saa_rewind(forwrefs);
1196 forwref = saa_rstruct(forwrefs);
1198 offsets = raa_init();
1200 preproc->reset(fname, pass1, &nasmlist,
1201 pass1 == 2 ? depend_ptr : NULL);
1202 memcpy(warning_on, warning_on_global, (ERR_WARN_MAX+1) * sizeof(bool));
1206 location.known = true;
1207 location.offset = offs = GET_CURR_OFFS;
1209 while ((line = preproc->getline())) {
1214 * Here we parse our directives; this is not handled by the
1215 * 'real' parser. This really should be a separate function.
1218 d = getkw(&directive, &value);
1223 case D_SEGMENT: /* [SEGMENT n] */
1225 seg = ofmt->section(value, pass2, &sb);
1226 if (seg == NO_SEG) {
1227 nasm_error(pass1 == 1 ? ERR_NONFATAL : ERR_PANIC,
1228 "segment name `%s' not recognized",
1232 location.segment = seg;
1235 case D_SEGALIGN: /* [SEGALIGN n] */
1238 int align = atoi(value);
1239 if (!is_power2(align)) {
1240 nasm_error(ERR_NONFATAL,
1241 "segment alignment `%s' is not power of two",
1247 case D_EXTERN: /* [EXTERN label:special] */
1249 value++; /* skip initial $ if present */
1252 while (*q && *q != ':')
1256 ofmt->symdef(value, 0L, 0L, 3, q);
1258 } else if (passn == 1) {
1263 while (*q && *q != ':') {
1269 nasm_error(ERR_NONFATAL,
1270 "identifier expected after EXTERN");
1278 if (!is_extern(value)) { /* allow re-EXTERN to be ignored */
1280 pass0 = 1; /* fake pass 1 in labels.c */
1281 declare_as_global(value, special);
1282 define_label(value, seg_alloc(), 0L, NULL,
1286 } /* else pass0 == 1 */
1288 case D_BITS: /* [BITS bits] */
1289 globalbits = sb = get_bits(value);
1291 case D_GLOBAL: /* [GLOBAL symbol:special] */
1293 value++; /* skip initial $ if present */
1294 if (pass0 == 2) { /* pass 2 */
1296 while (*q && *q != ':')
1300 ofmt->symdef(value, 0L, 0L, 3, q);
1302 } else if (pass2 == 1) { /* pass == 1 */
1307 while (*q && *q != ':') {
1313 nasm_error(ERR_NONFATAL,
1314 "identifier expected after GLOBAL");
1322 declare_as_global(value, special);
1325 case D_COMMON: /* [COMMON symbol size:special] */
1330 value++; /* skip initial $ if present */
1335 while (*p && !nasm_isspace(*p)) {
1341 nasm_error(ERR_NONFATAL,
1342 "identifier expected after COMMON");
1346 p = nasm_zap_spaces_fwd(p);
1348 while (*q && *q != ':')
1356 size = readnum(p, &rn_error);
1358 nasm_error(ERR_NONFATAL,
1359 "invalid size specified"
1360 " in COMMON declaration");
1364 nasm_error(ERR_NONFATAL,
1365 "no size specified in"
1366 " COMMON declaration");
1371 define_common(value, seg_alloc(), size, special);
1372 } else if (pass0 == 2) {
1374 ofmt->symdef(value, 0L, 0L, 3, special);
1378 case D_ABSOLUTE: /* [ABSOLUTE address] */
1381 tokval.t_type = TOKEN_INVALID;
1382 e = evaluate(stdscan, NULL, &tokval, NULL, pass2,
1387 1 ? ERR_NONFATAL : ERR_PANIC,
1388 "cannot use non-relocatable expression as "
1389 "ABSOLUTE address");
1391 abs_seg = reloc_seg(e);
1392 abs_offset = reloc_value(e);
1394 } else if (passn == 1)
1395 abs_offset = 0x100; /* don't go near zero in case of / */
1397 nasm_error(ERR_PANIC, "invalid ABSOLUTE address "
1400 location.segment = NO_SEG;
1402 case D_DEBUG: /* [DEBUG] */
1405 bool badid, overlong;
1409 badid = overlong = false;
1410 if (!isidstart(*p)) {
1413 while (*p && !nasm_isspace(*p)) {
1414 if (q >= debugid + sizeof debugid - 1) {
1425 nasm_error(passn == 1 ? ERR_NONFATAL : ERR_PANIC,
1426 "identifier expected after DEBUG");
1430 nasm_error(passn == 1 ? ERR_NONFATAL : ERR_PANIC,
1431 "DEBUG identifier too long");
1434 p = nasm_skip_spaces(p);
1436 dfmt->debug_directive(debugid, p);
1439 case D_WARNING: /* [WARNING {+|-|*}warn-name] */
1440 value = nasm_skip_spaces(value);
1442 case '-': validid = 0; value++; break;
1443 case '+': validid = 1; value++; break;
1444 case '*': validid = 2; value++; break;
1445 default: validid = 1; break;
1448 for (i = 1; i <= ERR_WARN_MAX; i++)
1449 if (!nasm_stricmp(value, warnings[i].name))
1451 if (i <= ERR_WARN_MAX) {
1454 warning_on[i] = false;
1457 warning_on[i] = true;
1460 warning_on[i] = warning_on_global[i];
1465 nasm_error(ERR_NONFATAL,
1466 "invalid warning id in WARNING directive");
1468 case D_CPU: /* [CPU] */
1469 cpu = get_cpu(value);
1471 case D_LIST: /* [LIST {+|-}] */
1472 value = nasm_skip_spaces(value);
1473 if (*value == '+') {
1476 if (*value == '-') {
1483 case D_DEFAULT: /* [DEFAULT] */
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 (ofmt->directive(d, value, pass2))
1513 /* else fall through */
1515 nasm_error(pass1 == 1 ? ERR_NONFATAL : ERR_PANIC,
1516 "unrecognised directive [%s]",
1521 nasm_error(ERR_NONFATAL,
1522 "invalid parameter to [%s] directive",
1525 } else { /* it isn't a directive */
1526 parse_line(pass1, line, &output_ins, def_label);
1528 if (optimizing > 0) {
1529 if (forwref != NULL && globallineno == forwref->lineno) {
1530 output_ins.forw_ref = true;
1532 output_ins.oprs[forwref->operand].opflags |= OPFLAG_FORWARD;
1533 forwref = saa_rstruct(forwrefs);
1534 } while (forwref != NULL
1535 && forwref->lineno == globallineno);
1537 output_ins.forw_ref = false;
1539 if (output_ins.forw_ref) {
1541 for (i = 0; i < output_ins.operands; i++) {
1542 if (output_ins.oprs[i].opflags & OPFLAG_FORWARD) {
1543 struct forwrefinfo *fwinf =
1544 (struct forwrefinfo *)
1545 saa_wstruct(forwrefs);
1546 fwinf->lineno = globallineno;
1555 if (output_ins.opcode == I_EQU) {
1558 * Special `..' EQUs get processed in pass two,
1559 * except `..@' macro-processor EQUs which are done
1560 * in the normal place.
1562 if (!output_ins.label)
1563 nasm_error(ERR_NONFATAL,
1564 "EQU not preceded by label");
1566 else if (output_ins.label[0] != '.' ||
1567 output_ins.label[1] != '.' ||
1568 output_ins.label[2] == '@') {
1569 if (output_ins.operands == 1 &&
1570 (output_ins.oprs[0].type & IMMEDIATE) &&
1571 output_ins.oprs[0].wrt == NO_SEG) {
1572 bool isext = !!(output_ins.oprs[0].opflags
1574 def_label(output_ins.label,
1575 output_ins.oprs[0].segment,
1576 output_ins.oprs[0].offset, NULL,
1578 } else if (output_ins.operands == 2
1579 && (output_ins.oprs[0].type & IMMEDIATE)
1580 && (output_ins.oprs[0].type & COLON)
1581 && output_ins.oprs[0].segment == NO_SEG
1582 && output_ins.oprs[0].wrt == NO_SEG
1583 && (output_ins.oprs[1].type & IMMEDIATE)
1584 && output_ins.oprs[1].segment == NO_SEG
1585 && output_ins.oprs[1].wrt == NO_SEG) {
1586 def_label(output_ins.label,
1587 output_ins.oprs[0].offset | SEG_ABS,
1588 output_ins.oprs[1].offset,
1589 NULL, false, false);
1591 nasm_error(ERR_NONFATAL,
1592 "bad syntax for EQU");
1596 * Special `..' EQUs get processed here, except
1597 * `..@' macro processor EQUs which are done above.
1599 if (output_ins.label[0] == '.' &&
1600 output_ins.label[1] == '.' &&
1601 output_ins.label[2] != '@') {
1602 if (output_ins.operands == 1 &&
1603 (output_ins.oprs[0].type & IMMEDIATE)) {
1604 define_label(output_ins.label,
1605 output_ins.oprs[0].segment,
1606 output_ins.oprs[0].offset,
1607 NULL, false, false);
1608 } else if (output_ins.operands == 2
1609 && (output_ins.oprs[0].type & IMMEDIATE)
1610 && (output_ins.oprs[0].type & COLON)
1611 && output_ins.oprs[0].segment == NO_SEG
1612 && (output_ins.oprs[1].type & IMMEDIATE)
1613 && output_ins.oprs[1].segment == NO_SEG) {
1614 define_label(output_ins.label,
1615 output_ins.oprs[0].offset | SEG_ABS,
1616 output_ins.oprs[1].offset,
1617 NULL, false, false);
1619 nasm_error(ERR_NONFATAL,
1620 "bad syntax for EQU");
1623 } else { /* instruction isn't an EQU */
1627 int64_t l = insn_size(location.segment, offs, sb, cpu,
1628 &output_ins, nasm_error);
1630 /* if (using_debug_info) && output_ins.opcode != -1) */
1631 if (using_debug_info)
1632 { /* fbk 03/25/01 */
1633 /* this is done here so we can do debug type info */
1635 TYS_ELEMENTS(output_ins.operands);
1636 switch (output_ins.opcode) {
1639 TYS_ELEMENTS(output_ins.oprs[0].offset) | TY_BYTE;
1643 TYS_ELEMENTS(output_ins.oprs[0].offset) | TY_WORD;
1647 TYS_ELEMENTS(output_ins.oprs[0].offset) | TY_DWORD;
1651 TYS_ELEMENTS(output_ins.oprs[0].offset) | TY_QWORD;
1655 TYS_ELEMENTS(output_ins.oprs[0].offset) | TY_TBYTE;
1659 TYS_ELEMENTS(output_ins.oprs[0].offset) | TY_OWORD;
1663 TYS_ELEMENTS(output_ins.oprs[0].offset) | TY_YWORD;
1666 typeinfo |= TY_BYTE;
1669 typeinfo |= TY_WORD;
1672 if (output_ins.eops_float)
1673 typeinfo |= TY_FLOAT;
1675 typeinfo |= TY_DWORD;
1678 typeinfo |= TY_QWORD;
1681 typeinfo |= TY_TBYTE;
1684 typeinfo |= TY_OWORD;
1687 typeinfo |= TY_YWORD;
1690 typeinfo = TY_LABEL;
1694 dfmt->debug_typevalue(typeinfo);
1698 SET_CURR_OFFS(offs);
1701 * else l == -1 => invalid instruction, which will be
1702 * flagged as an error on pass 2
1706 offs += assemble(location.segment, offs, sb, cpu,
1707 &output_ins, ofmt, nasm_error,
1709 SET_CURR_OFFS(offs);
1713 cleanup_insn(&output_ins);
1716 location.offset = offs = GET_CURR_OFFS;
1717 } /* end while (line = preproc->getline... */
1719 if (pass0 == 2 && global_offset_changed && !terminate_after_phase)
1720 nasm_error(ERR_NONFATAL,
1721 "phase error detected at end of assembly.");
1724 preproc->cleanup(1);
1726 if ((passn > 1 && !global_offset_changed) || pass0 == 2) {
1728 } else if (global_offset_changed &&
1729 global_offset_changed < prev_offset_changed) {
1730 prev_offset_changed = global_offset_changed;
1736 if (terminate_after_phase)
1739 if ((stall_count > 997) || (passn >= pass_max)) {
1740 /* We get here if the labels don't converge
1741 * Example: FOO equ FOO + 1
1743 nasm_error(ERR_NONFATAL,
1744 "Can't find valid values for all labels "
1745 "after %d passes, giving up.", passn);
1746 nasm_error(ERR_NONFATAL,
1747 "Possible causes: recursive EQUs, macro abuse.");
1752 preproc->cleanup(0);
1754 if (!terminate_after_phase && opt_verbose_info) {
1755 /* -On and -Ov switches */
1756 fprintf(stdout, "info: assembly required 1+%d+1 passes\n", passn-3);
1760 static enum directives getkw(char **directive, char **value)
1764 buf = nasm_skip_spaces(*directive);
1766 /* it should be enclosed in [ ] */
1769 q = strchr(buf, ']');
1773 /* stip off the comments */
1774 p = strchr(buf, ';');
1776 if (p < q) /* ouch! somwhere inside */
1781 /* no brace, no trailing spaces */
1783 nasm_zap_spaces_rev(--q);
1786 p = nasm_skip_spaces(++buf);
1787 q = nasm_skip_word(p);
1789 return D_none; /* sigh... no value there */
1793 /* and value finally */
1794 p = nasm_skip_spaces(++q);
1797 return find_directive(*directive);
1801 * gnu style error reporting
1802 * This function prints an error message to error_file in the
1803 * style used by GNU. An example would be:
1804 * file.asm:50: error: blah blah blah
1805 * where file.asm is the name of the file, 50 is the line number on
1806 * which the error occurs (or is detected) and "error:" is one of
1807 * the possible optional diagnostics -- it can be "error" or "warning"
1808 * or something else. Finally the line terminates with the actual
1811 * @param severity the severity of the warning or error
1812 * @param fmt the printf style format string
1814 static void nasm_verror_gnu(int severity, const char *fmt, va_list ap)
1816 char *currentfile = NULL;
1819 if (is_suppressed_warning(severity))
1822 if (!(severity & ERR_NOFILE))
1823 src_get(&lineno, ¤tfile);
1826 fprintf(error_file, "%s:%"PRId32": ", currentfile, lineno);
1827 nasm_free(currentfile);
1829 fputs("nasm: ", error_file);
1832 nasm_verror_common(severity, fmt, ap);
1836 * MS style error reporting
1837 * This function prints an error message to error_file in the
1838 * style used by Visual C and some other Microsoft tools. An example
1840 * file.asm(50) : error: blah blah blah
1841 * where file.asm is the name of the file, 50 is the line number on
1842 * which the error occurs (or is detected) and "error:" is one of
1843 * the possible optional diagnostics -- it can be "error" or "warning"
1844 * or something else. Finally the line terminates with the actual
1847 * @param severity the severity of the warning or error
1848 * @param fmt the printf style format string
1850 static void nasm_verror_vc(int severity, const char *fmt, va_list ap)
1852 char *currentfile = NULL;
1855 if (is_suppressed_warning(severity))
1858 if (!(severity & ERR_NOFILE))
1859 src_get(&lineno, ¤tfile);
1862 fprintf(error_file, "%s(%"PRId32") : ", currentfile, lineno);
1863 nasm_free(currentfile);
1865 fputs("nasm: ", error_file);
1868 nasm_verror_common(severity, fmt, ap);
1872 * check for supressed warning
1873 * checks for suppressed warning or pass one only warning and we're
1876 * @param severity the severity of the warning or error
1877 * @return true if we should abort error/warning printing
1879 static bool is_suppressed_warning(int severity)
1882 * See if it's a suppressed warning.
1884 return (severity & ERR_MASK) == ERR_WARNING &&
1885 (((severity & ERR_WARN_MASK) != 0 &&
1886 !warning_on[(severity & ERR_WARN_MASK) >> ERR_WARN_SHR]) ||
1887 /* See if it's a pass-one only warning and we're not in pass one. */
1888 ((severity & ERR_PASS1) && pass0 != 1) ||
1889 ((severity & ERR_PASS2) && pass0 != 2));
1893 * common error reporting
1894 * This is the common back end of the error reporting schemes currently
1895 * implemented. It prints the nature of the warning and then the
1896 * specific error message to error_file and may or may not return. It
1897 * doesn't return if the error severity is a "panic" or "debug" type.
1899 * @param severity the severity of the warning or error
1900 * @param fmt the printf style format string
1902 static void nasm_verror_common(int severity, const char *fmt, va_list args)
1907 switch (severity & (ERR_MASK|ERR_NO_SEVERITY)) {
1928 vsnprintf(msg, sizeof msg, fmt, args);
1930 fprintf(error_file, "%s%s\n", pfx, msg);
1933 nasmlist.error(severity, pfx, msg);
1935 if (severity & ERR_USAGE)
1938 switch (severity & ERR_MASK) {
1940 /* no further action, by definition */
1943 if (warning_on[0]) /* Treat warnings as errors */
1944 terminate_after_phase = true;
1947 terminate_after_phase = true;
1957 exit(1); /* instantly die */
1958 break; /* placate silly compilers */
1961 /* abort(); *//* halt, catch fire, and dump core */
1967 static void usage(void)
1969 fputs("type `nasm -h' for help\n", error_file);
1972 #define BUF_DELTA 512
1974 static FILE *no_pp_fp;
1975 static ListGen *no_pp_list;
1976 static int32_t no_pp_lineinc;
1978 static void no_pp_reset(char *file, int pass, ListGen * listgen,
1981 src_set_fname(nasm_strdup(file));
1984 no_pp_fp = fopen(file, "r");
1986 nasm_error(ERR_FATAL | ERR_NOFILE,
1987 "unable to open input file `%s'", file);
1988 no_pp_list = listgen;
1989 (void)pass; /* placate compilers */
1992 StrList *sl = nasm_malloc(strlen(file)+1+sizeof sl->next);
1994 strcpy(sl->str, file);
1999 static char *no_pp_getline(void)
2001 char *buffer, *p, *q;
2004 bufsize = BUF_DELTA;
2005 buffer = nasm_malloc(BUF_DELTA);
2006 src_set_linnum(src_get_linnum() + no_pp_lineinc);
2008 while (1) { /* Loop to handle %line */
2011 while (1) { /* Loop to handle long lines */
2012 q = fgets(p, bufsize - (p - buffer), no_pp_fp);
2016 if (p > buffer && p[-1] == '\n')
2018 if (p - buffer > bufsize - 10) {
2020 offset = p - buffer;
2021 bufsize += BUF_DELTA;
2022 buffer = nasm_realloc(buffer, bufsize);
2023 p = buffer + offset;
2027 if (!q && p == buffer) {
2033 * Play safe: remove CRs, LFs and any spurious ^Zs, if any of
2034 * them are present at the end of the line.
2036 buffer[strcspn(buffer, "\r\n\032")] = '\0';
2038 if (!nasm_strnicmp(buffer, "%line", 5)) {
2041 char *nm = nasm_malloc(strlen(buffer));
2042 if (sscanf(buffer + 5, "%"PRId32"+%d %s", &ln, &li, nm) == 3) {
2043 nasm_free(src_set_fname(nm));
2053 no_pp_list->line(LIST_READ, buffer);
2058 static void no_pp_cleanup(int pass)
2060 (void)pass; /* placate GCC */
2064 static uint32_t get_cpu(char *value)
2066 if (!strcmp(value, "8086"))
2068 if (!strcmp(value, "186"))
2070 if (!strcmp(value, "286"))
2072 if (!strcmp(value, "386"))
2074 if (!strcmp(value, "486"))
2076 if (!strcmp(value, "586") || !nasm_stricmp(value, "pentium"))
2078 if (!strcmp(value, "686") ||
2079 !nasm_stricmp(value, "ppro") ||
2080 !nasm_stricmp(value, "pentiumpro") || !nasm_stricmp(value, "p2"))
2082 if (!nasm_stricmp(value, "p3") || !nasm_stricmp(value, "katmai"))
2084 if (!nasm_stricmp(value, "p4") || /* is this right? -- jrc */
2085 !nasm_stricmp(value, "willamette"))
2086 return IF_WILLAMETTE;
2087 if (!nasm_stricmp(value, "prescott"))
2089 if (!nasm_stricmp(value, "x64") ||
2090 !nasm_stricmp(value, "x86-64"))
2092 if (!nasm_stricmp(value, "ia64") ||
2093 !nasm_stricmp(value, "ia-64") ||
2094 !nasm_stricmp(value, "itanium") ||
2095 !nasm_stricmp(value, "itanic") || !nasm_stricmp(value, "merced"))
2098 nasm_error(pass0 < 2 ? ERR_NONFATAL : ERR_FATAL,
2099 "unknown 'cpu' type");
2101 return IF_PLEVEL; /* the maximum level */
2104 static int get_bits(char *value)
2108 if ((i = atoi(value)) == 16)
2109 return i; /* set for a 16-bit segment */
2112 nasm_error(ERR_NONFATAL,
2113 "cannot specify 32-bit segment on processor below a 386");
2116 } else if (i == 64) {
2117 if (cpu < IF_X86_64) {
2118 nasm_error(ERR_NONFATAL,
2119 "cannot specify 64-bit segment on processor below an x86-64");
2123 nasm_error(ERR_NONFATAL,
2124 "%s output format does not support 64-bit code",
2129 nasm_error(pass0 < 2 ? ERR_NONFATAL : ERR_FATAL,
2130 "`%s' is not a valid segment size; must be 16, 32 or 64",