1 /* ----------------------------------------------------------------------- *
3 * Copyright 1996-2017 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
67 * This is the maximum number of optimization passes to do. If we ever
68 * find a case where the optimizer doesn't naturally converge, we might
69 * have to drop this value so the assembler doesn't appear to just hang.
71 #define MAX_OPTIMIZE (INT_MAX >> 1)
73 struct forwrefinfo
{ /* info held on forward refs. */
78 static void parse_cmdline(int, char **, int);
79 static void assemble_file(char *, StrList
**);
80 static bool is_suppressed_warning(int severity
);
81 static bool skip_this_pass(int severity
);
82 static void nasm_verror_gnu(int severity
, const char *fmt
, va_list args
);
83 static void nasm_verror_vc(int severity
, const char *fmt
, va_list args
);
84 static void nasm_verror_common(int severity
, const char *fmt
, va_list args
);
85 static void usage(void);
87 static bool using_debug_info
, opt_verbose_info
;
88 static const char *debug_format
;
90 bool tasm_compatible_mode
= false;
92 static int pass1
, pass2
; /* XXX: Get rid of these, they are redundant */
96 static time_t official_compile_time
;
98 static char inname
[FILENAME_MAX
];
99 static char outname
[FILENAME_MAX
];
100 static char listname
[FILENAME_MAX
];
101 static char errname
[FILENAME_MAX
];
102 static int globallineno
; /* for forward-reference tracking */
103 /* static int pass = 0; */
104 const struct ofmt
*ofmt
= &OF_DEFAULT
;
105 const struct ofmt_alias
*ofmt_alias
= NULL
;
106 const struct dfmt
*dfmt
;
108 static FILE *error_file
; /* Where to write error messages */
111 int optimizing
= MAX_OPTIMIZE
; /* number of optimization passes to take */
112 static int cmd_sb
= 16; /* by default */
115 static iflag_t cmd_cpu
;
117 struct location location
;
118 bool in_absolute
; /* Flag we are in ABSOLUTE seg */
119 struct location absolute
; /* Segment/offset inside ABSOLUTE */
121 static struct RAA
*offsets
;
123 static struct SAA
*forwrefs
; /* keep track of forward references */
124 static const struct forwrefinfo
*forwref
;
126 static const struct preproc_ops
*preproc
;
128 #define OP_NORMAL (1u << 0)
129 #define OP_PREPROCESS (1u << 1)
130 #define OP_DEPEND (1u << 2)
132 static unsigned int operating_mode
;
134 /* Dependency flags */
135 static bool depend_emit_phony
= false;
136 static bool depend_missing_ok
= false;
137 static const char *depend_target
= NULL
;
138 static const char *depend_file
= NULL
;
140 static bool want_usage
;
141 static bool terminate_after_phase
;
142 bool user_nolist
= false;
144 static char *quote_for_make(const char *str
);
146 static int64_t get_curr_offs(void)
148 return in_absolute
? absolute
.offset
: raa_read(offsets
, location
.segment
);
151 static void set_curr_offs(int64_t l_off
)
154 absolute
.offset
= l_off
;
156 offsets
= raa_write(offsets
, location
.segment
, l_off
);
159 static void nasm_fputs(const char *line
, FILE * outfile
)
162 fputs(line
, outfile
);
168 /* Convert a struct tm to a POSIX-style time constant */
169 static int64_t make_posix_time(struct tm
*tm
)
172 int64_t y
= tm
->tm_year
;
174 /* See IEEE 1003.1:2004, section 4.14 */
176 t
= (y
-70)*365 + (y
-69)/4 - (y
-1)/100 + (y
+299)/400;
188 static void define_macros_early(void)
191 struct tm lt
, *lt_p
, gm
, *gm_p
;
194 lt_p
= localtime(&official_compile_time
);
198 strftime(temp
, sizeof temp
, "__DATE__=\"%Y-%m-%d\"", <
);
199 preproc
->pre_define(temp
);
200 strftime(temp
, sizeof temp
, "__DATE_NUM__=%Y%m%d", <
);
201 preproc
->pre_define(temp
);
202 strftime(temp
, sizeof temp
, "__TIME__=\"%H:%M:%S\"", <
);
203 preproc
->pre_define(temp
);
204 strftime(temp
, sizeof temp
, "__TIME_NUM__=%H%M%S", <
);
205 preproc
->pre_define(temp
);
208 gm_p
= gmtime(&official_compile_time
);
212 strftime(temp
, sizeof temp
, "__UTC_DATE__=\"%Y-%m-%d\"", &gm
);
213 preproc
->pre_define(temp
);
214 strftime(temp
, sizeof temp
, "__UTC_DATE_NUM__=%Y%m%d", &gm
);
215 preproc
->pre_define(temp
);
216 strftime(temp
, sizeof temp
, "__UTC_TIME__=\"%H:%M:%S\"", &gm
);
217 preproc
->pre_define(temp
);
218 strftime(temp
, sizeof temp
, "__UTC_TIME_NUM__=%H%M%S", &gm
);
219 preproc
->pre_define(temp
);
223 posix_time
= make_posix_time(&gm
);
225 posix_time
= make_posix_time(<
);
230 snprintf(temp
, sizeof temp
, "__POSIX_TIME__=%"PRId64
, posix_time
);
231 preproc
->pre_define(temp
);
235 static void define_macros_late(void)
240 * In case if output format is defined by alias
241 * we have to put shortname of the alias itself here
242 * otherwise ABI backward compatibility gets broken.
244 snprintf(temp
, sizeof(temp
), "__OUTPUT_FORMAT__=%s",
245 ofmt_alias
? ofmt_alias
->shortname
: ofmt
->shortname
);
246 preproc
->pre_define(temp
);
249 static void emit_dependencies(StrList
*list
)
255 if (depend_file
&& strcmp(depend_file
, "-")) {
256 deps
= nasm_open_write(depend_file
, NF_TEXT
);
258 nasm_error(ERR_NONFATAL
|ERR_NOFILE
|ERR_USAGE
,
259 "unable to write dependency file `%s'", depend_file
);
266 linepos
= fprintf(deps
, "%s:", depend_target
);
267 list_for_each(l
, list
) {
268 char *file
= quote_for_make(l
->str
);
270 if (linepos
+ len
> 62 && linepos
> 1) {
271 fprintf(deps
, " \\\n ");
274 fprintf(deps
, " %s", file
);
278 fprintf(deps
, "\n\n");
280 list_for_each_safe(l
, nl
, list
) {
281 if (depend_emit_phony
)
282 fprintf(deps
, "%s:\n\n", l
->str
);
290 int main(int argc
, char **argv
)
292 StrList
*depend_list
= NULL
, **depend_ptr
;
294 time(&official_compile_time
);
296 iflag_set(&cpu
, IF_PLEVEL
);
297 iflag_set(&cmd_cpu
, IF_PLEVEL
);
300 want_usage
= terminate_after_phase
= false;
301 nasm_set_verror(nasm_verror_gnu
);
308 offsets
= raa_init();
309 forwrefs
= saa_init((int32_t)sizeof(struct forwrefinfo
));
312 operating_mode
= OP_NORMAL
;
314 parse_cmdline(argc
, argv
, 1);
315 if (terminate_after_phase
) {
322 * Define some macros dependent on the runtime, but not
323 * on the command line (as those are scanned in cmdline pass 2.)
326 define_macros_early();
328 parse_cmdline(argc
, argv
, 2);
329 if (terminate_after_phase
) {
335 /* Save away the default state of warnings */
336 memcpy(warning_state_init
, warning_state
, sizeof warning_state
);
338 if (!using_debug_info
) {
339 /* No debug info, redirect to the null backend (empty stubs) */
340 dfmt
= &null_debug_form
;
341 } else if (!debug_format
) {
342 /* Default debug format for this backend */
343 dfmt
= ofmt
->default_dfmt
;
345 dfmt
= dfmt_find(ofmt
, debug_format
);
347 nasm_fatal(ERR_NOFILE
| ERR_USAGE
,
348 "unrecognized debug format `%s' for"
349 " output format `%s'",
350 debug_format
, ofmt
->shortname
);
355 preproc
->extra_stdmac(ofmt
->stdmac
);
357 /* define some macros dependent of command-line */
358 define_macros_late();
360 depend_ptr
= (depend_file
|| (operating_mode
& OP_DEPEND
)) ? &depend_list
: NULL
;
362 depend_target
= quote_for_make(outname
);
364 if (operating_mode
& OP_DEPEND
) {
367 if (depend_missing_ok
)
368 preproc
->include_path(NULL
); /* "assume generated" */
370 preproc
->reset(inname
, 0, depend_ptr
);
371 if (outname
[0] == '\0')
372 ofmt
->filename(inname
, outname
);
374 while ((line
= preproc
->getline()))
377 } else if (operating_mode
& OP_PREPROCESS
) {
379 const char *file_name
= NULL
;
380 int32_t prior_linnum
= 0;
384 ofile
= nasm_open_write(outname
, NF_TEXT
);
386 nasm_fatal(ERR_NOFILE
,
387 "unable to open output file `%s'",
392 location
.known
= false;
395 preproc
->reset(inname
, 3, depend_ptr
);
397 /* Revert all warnings to the default state */
398 memcpy(warning_state
, warning_state_init
, sizeof warning_state
);
400 while ((line
= preproc
->getline())) {
402 * We generate %line directives if needed for later programs
404 int32_t linnum
= prior_linnum
+= lineinc
;
405 int altline
= src_get(&linnum
, &file_name
);
407 if (altline
== 1 && lineinc
== 1)
408 nasm_fputs("", ofile
);
410 lineinc
= (altline
!= -1 || lineinc
!= 1);
411 fprintf(ofile
? ofile
: stdout
,
412 "%%line %"PRId32
"+%d %s\n", linnum
, lineinc
,
415 prior_linnum
= linnum
;
417 nasm_fputs(line
, ofile
);
423 if (ofile
&& terminate_after_phase
)
428 if (operating_mode
& OP_NORMAL
) {
430 * We must call ofmt->filename _anyway_, even if the user
431 * has specified their own output file, because some
432 * formats (eg OBJ and COFF) use ofmt->filename to find out
433 * the name of the input file and then put that inside the
436 ofmt
->filename(inname
, outname
);
438 ofile
= nasm_open_write(outname
, (ofmt
->flags
& OFMT_TEXT
) ? NF_TEXT
: NF_BINARY
);
440 nasm_fatal(ERR_NOFILE
,
441 "unable to open output file `%s'", outname
);
444 * We must call init_labels() before ofmt->init() since
445 * some object formats will want to define labels in their
446 * init routines. (eg OS/2 defines the FLAT group)
453 assemble_file(inname
, depend_ptr
);
455 if (!terminate_after_phase
) {
460 nasm_error(ERR_NONFATAL
|ERR_NOFILE
,
461 "write error on output file `%s'", outname
);
462 terminate_after_phase
= true;
468 if (terminate_after_phase
)
474 if (depend_list
&& !terminate_after_phase
)
475 emit_dependencies(depend_list
);
486 return terminate_after_phase
;
490 * Get a parameter for a command line option.
491 * First arg must be in the form of e.g. -f...
493 static char *get_param(char *p
, char *q
, bool *advance
)
496 if (p
[2]) /* the parameter's in the option */
497 return nasm_skip_spaces(p
+ 2);
502 nasm_error(ERR_NONFATAL
| ERR_NOFILE
| ERR_USAGE
,
503 "option `-%c' requires an argument", p
[1]);
510 static void copy_filename(char *dst
, const char *src
)
512 size_t len
= strlen(src
);
514 if (len
>= (size_t)FILENAME_MAX
) {
515 nasm_fatal(ERR_NOFILE
, "file name too long");
518 strncpy(dst
, src
, FILENAME_MAX
);
522 * Convert a string to Make-safe form
524 static char *quote_for_make(const char *str
)
529 size_t n
= 1; /* Terminating zero */
535 for (p
= str
; *p
; p
++) {
539 /* Convert N backslashes + ws -> 2N+1 backslashes + ws */
559 /* Convert N backslashes at the end of filename to 2N backslashes */
563 os
= q
= nasm_malloc(n
);
566 for (p
= str
; *p
; p
++) {
612 static const struct textargs textopts
[] = {
613 {"prefix", OPT_PREFIX
},
614 {"postfix", OPT_POSTFIX
},
618 static void show_version(void)
620 printf("NASM version %s compiled on %s%s\n",
621 nasm_version
, nasm_date
, nasm_compile_options
);
625 static bool stopoptions
= false;
626 static bool process_arg(char *p
, char *q
, int pass
)
630 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
)))
648 case 'o': /* output file */
650 copy_filename(outname
, param
);
653 case 'f': /* output format */
655 ofmt
= ofmt_find(param
, &ofmt_alias
);
657 nasm_fatal(ERR_NOFILE
| ERR_USAGE
,
658 "unrecognised output format `%s' - "
659 "use -hf for a list", param
);
664 case 'O': /* Optimization level */
669 /* Naked -O == -Ox */
670 optimizing
= MAX_OPTIMIZE
;
674 case '0': case '1': case '2': case '3': case '4':
675 case '5': case '6': case '7': case '8': case '9':
676 opt
= strtoul(param
, ¶m
, 10);
678 /* -O0 -> optimizing == -1, 0.98 behaviour */
679 /* -O1 -> optimizing == 0, 0.98.09 behaviour */
681 optimizing
= opt
- 1;
689 opt_verbose_info
= true;
694 optimizing
= MAX_OPTIMIZE
;
699 "unknown optimization option -O%c\n",
704 if (optimizing
> MAX_OPTIMIZE
)
705 optimizing
= MAX_OPTIMIZE
;
710 case 'p': /* pre-include */
713 preproc
->pre_include(param
);
716 case 'd': /* pre-define */
719 preproc
->pre_define(param
);
722 case 'u': /* un-define */
725 preproc
->pre_undefine(param
);
728 case 'i': /* include search path */
731 preproc
->include_path(param
);
734 case 'l': /* listing file */
736 copy_filename(listname
, param
);
739 case 'Z': /* error messages file */
741 copy_filename(errname
, param
);
744 case 'F': /* specify debug format */
746 using_debug_info
= true;
747 debug_format
= param
;
751 case 'X': /* specify error reporting format */
753 if (nasm_stricmp("vc", param
) == 0)
754 nasm_set_verror(nasm_verror_vc
);
755 else if (nasm_stricmp("gnu", param
) == 0)
756 nasm_set_verror(nasm_verror_gnu
);
758 nasm_fatal(ERR_NOFILE
| ERR_USAGE
,
759 "unrecognized error reporting format `%s'",
766 using_debug_info
= true;
768 debug_format
= nasm_skip_spaces(p
+ 2);
774 ("usage: nasm [-@ response file] [-o outfile] [-f format] "
776 " [options...] [--] filename\n"
777 " or nasm -v (or --v) for version info\n\n"
778 " -t assemble in SciTech TASM compatible mode\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 " -g generate debugging information\n\n"
792 " -F format select a debugging format\n\n"
793 " -gformat same as -g -F format\n\n"
794 " -o outfile write output to an outfile\n\n"
795 " -f format select an output format\n\n"
796 " -l listfile write listing to a listfile\n\n"
797 " -I<path> adds a pathname to the include file path\n");
799 (" -O<digit> optimize branch offsets\n"
800 " -O0: No optimization\n"
801 " -O1: Minimal optimization\n"
802 " -Ox: Multipass optimization (default)\n\n"
803 " -P<file> pre-includes a file\n"
804 " -D<macro>[=<value>] pre-defines a macro\n"
805 " -U<macro> undefines a macro\n"
806 " -X<format> specifies error reporting format (gnu or vc)\n"
807 " -w+foo enables warning foo (equiv. -Wfoo)\n"
808 " -w-foo disable warning foo (equiv. -Wno-foo)\n\n"
809 " -w[+-]error[=foo] can be used to promote warnings to errors\n"
810 " -h show invocation summary and exit\n\n"
811 "--prefix,--postfix\n"
812 " these options prepend or append the given string\n"
813 " to all extern and global variables\n"
815 "Response files should contain command line parameters,\n"
818 "Warnings for the -W/-w options:\n");
819 for (i
= 0; i
<= ERR_WARN_ALL
; i
++)
820 printf(" %-23s %s%s\n",
821 warnings
[i
].name
, warnings
[i
].help
,
822 i
== ERR_WARN_ALL
? "\n" :
823 warnings
[i
].enabled
? " (default on)" :
826 printf("valid output formats for -f are"
827 " (`*' denotes default):\n");
828 ofmt_list(ofmt
, stdout
);
830 printf("For a list of valid output formats, use -hf.\n");
831 printf("For a list of debug formats, use -f <form> -y.\n");
833 exit(0); /* never need usage message here */
837 printf("\nvalid debug formats for '%s' output format are"
838 " ('*' denotes default):\n", ofmt
->shortname
);
839 dfmt_list(ofmt
, stdout
);
845 tasm_compatible_mode
= true;
852 case 'e': /* preprocess only */
855 operating_mode
= OP_PREPROCESS
;
858 case 'a': /* assemble only - don't preprocess */
860 preproc
= &preproc_nop
;
866 if (!set_warning_status(param
)) {
867 nasm_error(ERR_WARNING
|ERR_NOFILE
|ERR_WARN_UNK_WARNING
,
868 "unknown warning option: %s", param
);
877 operating_mode
= OP_DEPEND
;
880 operating_mode
= OP_DEPEND
;
881 depend_missing_ok
= true;
884 depend_emit_phony
= true;
887 operating_mode
= OP_NORMAL
;
900 depend_target
= quote_for_make(q
);
904 nasm_error(ERR_NONFATAL
|ERR_NOFILE
|ERR_USAGE
,
905 "unknown dependency option `-M%c'", p
[2]);
908 if (advance
&& (!q
|| !q
[0])) {
909 nasm_error(ERR_NONFATAL
|ERR_NOFILE
|ERR_USAGE
,
910 "option `-M%c' requires a parameter", p
[2]);
920 if (p
[2] == 0) { /* -- => stop processing options */
925 if (!nasm_stricmp(p
, "--v"))
928 if (!nasm_stricmp(p
, "--version"))
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
;
955 strlcpy(lprefix
, param
, PREFIX_MAX
);
959 strlcpy(lpostfix
, param
, POSTFIX_MAX
);
962 nasm_panic(ERR_NOFILE
,
971 nasm_error(ERR_NONFATAL
| ERR_NOFILE
| ERR_USAGE
,
972 "unrecognised option `--%s'", p
+ 2);
980 if (!ofmt
->setinfo(GI_SWITCH
, &p
))
981 nasm_error(ERR_NONFATAL
| ERR_NOFILE
| ERR_USAGE
,
982 "unrecognised option `-%c'", p
[1]);
985 } else if (pass
== 2) {
987 nasm_error(ERR_NONFATAL
| ERR_NOFILE
| ERR_USAGE
,
988 "more than one input file specified");
990 copy_filename(inname
, p
);
997 #define ARG_BUF_DELTA 128
999 static void process_respfile(FILE * rfile
, int pass
)
1001 char *buffer
, *p
, *q
, *prevarg
;
1002 int bufsize
, prevargsize
;
1004 bufsize
= prevargsize
= ARG_BUF_DELTA
;
1005 buffer
= nasm_malloc(ARG_BUF_DELTA
);
1006 prevarg
= nasm_malloc(ARG_BUF_DELTA
);
1009 while (1) { /* Loop to handle all lines in file */
1011 while (1) { /* Loop to handle long lines */
1012 q
= fgets(p
, bufsize
- (p
- buffer
), rfile
);
1016 if (p
> buffer
&& p
[-1] == '\n')
1018 if (p
- buffer
> bufsize
- 10) {
1020 offset
= p
- buffer
;
1021 bufsize
+= ARG_BUF_DELTA
;
1022 buffer
= nasm_realloc(buffer
, bufsize
);
1023 p
= buffer
+ offset
;
1027 if (!q
&& p
== buffer
) {
1029 process_arg(prevarg
, NULL
, pass
);
1036 * Play safe: remove CRs, LFs and any spurious ^Zs, if any of
1037 * them are present at the end of the line.
1039 *(p
= &buffer
[strcspn(buffer
, "\r\n\032")]) = '\0';
1041 while (p
> buffer
&& nasm_isspace(p
[-1]))
1044 p
= nasm_skip_spaces(buffer
);
1046 if (process_arg(prevarg
, p
, pass
))
1049 if ((int) strlen(p
) > prevargsize
- 10) {
1050 prevargsize
+= ARG_BUF_DELTA
;
1051 prevarg
= nasm_realloc(prevarg
, prevargsize
);
1053 strncpy(prevarg
, p
, prevargsize
);
1057 /* Function to process args from a string of args, rather than the
1058 * argv array. Used by the environment variable and response file
1061 static void process_args(char *args
, int pass
)
1063 char *p
, *q
, *arg
, *prevarg
;
1064 char separator
= ' ';
1067 if (*p
&& *p
!= '-')
1072 while (*p
&& *p
!= separator
)
1074 while (*p
== separator
)
1078 if (process_arg(prevarg
, arg
, pass
))
1082 process_arg(arg
, NULL
, pass
);
1085 static void process_response_file(const char *file
, int pass
)
1088 FILE *f
= nasm_open_read(file
, NF_TEXT
);
1093 while (fgets(str
, sizeof str
, f
)) {
1094 process_args(str
, pass
);
1099 static void parse_cmdline(int argc
, char **argv
, int pass
)
1102 char *envreal
, *envcopy
= NULL
, *p
;
1105 *inname
= *outname
= *listname
= *errname
= '\0';
1107 /* Initialize all the warnings to their default state */
1108 for (i
= 0; i
< ERR_WARN_ALL
; i
++) {
1109 warning_state_init
[i
] = warning_state
[i
] =
1110 warnings
[i
].enabled
? WARN_ST_ENABLED
: 0;
1114 * First, process the NASMENV environment variable.
1116 envreal
= getenv("NASMENV");
1118 envcopy
= nasm_strdup(envreal
);
1119 process_args(envcopy
, pass
);
1124 * Now process the actual command line.
1129 if (argv
[0][0] == '@') {
1131 * We have a response file, so process this as a set of
1132 * arguments like the environment variable. This allows us
1133 * to have multiple arguments on a single line, which is
1134 * different to the -@resp file processing below for regular
1137 process_response_file(argv
[0]+1, pass
);
1141 if (!stopoptions
&& argv
[0][0] == '-' && argv
[0][1] == '@') {
1142 p
= get_param(argv
[0], argc
> 1 ? argv
[1] : NULL
, &advance
);
1144 rfile
= nasm_open_read(p
, NF_TEXT
);
1146 process_respfile(rfile
, pass
);
1149 nasm_error(ERR_NONFATAL
| ERR_NOFILE
| ERR_USAGE
,
1150 "unable to open response file `%s'", p
);
1153 advance
= process_arg(argv
[0], argc
> 1 ? argv
[1] : NULL
, pass
);
1154 argv
+= advance
, argc
-= advance
;
1158 * Look for basic command line typos. This definitely doesn't
1159 * catch all errors, but it might help cases of fumbled fingers.
1165 nasm_error(ERR_NONFATAL
| ERR_NOFILE
| ERR_USAGE
,
1166 "no input file specified");
1167 else if (!strcmp(inname
, errname
) ||
1168 !strcmp(inname
, outname
) ||
1169 !strcmp(inname
, listname
) ||
1170 (depend_file
&& !strcmp(inname
, depend_file
)))
1171 nasm_fatal(ERR_NOFILE
| ERR_USAGE
,
1172 "file `%s' is both input and output file",
1176 error_file
= nasm_open_write(errname
, NF_TEXT
);
1178 error_file
= stderr
; /* Revert to default! */
1179 nasm_fatal(ERR_NOFILE
| ERR_USAGE
,
1180 "cannot open file `%s' for error messages",
1186 static void assemble_file(char *fname
, StrList
**depend_ptr
)
1194 uint64_t prev_offset_changed
;
1195 unsigned int stall_count
= 0; /* Make sure we make forward progress... */
1197 if (cmd_sb
== 32 && iflag_ffs(&cmd_cpu
) < IF_386
)
1198 nasm_fatal(0, "command line: 32-bit segment size requires a higher cpu");
1200 pass_max
= prev_offset_changed
= (INT_MAX
>> 1) + 2; /* Almost unlimited */
1201 for (passn
= 1; pass0
<= 2; passn
++) {
1204 pass1
= pass0
== 2 ? 2 : 1; /* 1, 1, 1, ..., 1, 2 */
1205 pass2
= passn
> 1 ? 2 : 1; /* 1, 2, 2, ..., 2, 2 */
1206 /* pass0 0, 0, 0, ..., 1, 2 */
1208 def_label
= passn
> 1 ? redefine_label
: define_label
;
1210 globalbits
= sb
= cmd_sb
; /* set 'bits' to command line default */
1213 lfmt
->init(listname
);
1215 in_absolute
= false;
1216 global_offset_changed
= 0; /* set by redefine_label */
1217 location
.segment
= ofmt
->section(NULL
, pass2
, &sb
);
1220 saa_rewind(forwrefs
);
1221 forwref
= saa_rstruct(forwrefs
);
1223 offsets
= raa_init();
1225 preproc
->reset(fname
, pass1
, pass1
== 2 ? depend_ptr
: NULL
);
1227 /* Revert all warnings to the default state */
1228 memcpy(warning_state
, warning_state_init
, sizeof warning_state
);
1232 location
.known
= true;
1233 location
.offset
= offs
= get_curr_offs();
1235 while ((line
= preproc
->getline())) {
1239 * Here we parse our directives; this is not handled by the
1242 if (process_directives(line
))
1243 goto end_of_line
; /* Just do final cleanup */
1245 /* Not a directive, or even something that starts with [ */
1247 parse_line(pass1
, line
, &output_ins
, def_label
);
1249 if (optimizing
> 0) {
1250 if (forwref
!= NULL
&& globallineno
== forwref
->lineno
) {
1251 output_ins
.forw_ref
= true;
1253 output_ins
.oprs
[forwref
->operand
].opflags
|= OPFLAG_FORWARD
;
1254 forwref
= saa_rstruct(forwrefs
);
1255 } while (forwref
!= NULL
1256 && forwref
->lineno
== globallineno
);
1258 output_ins
.forw_ref
= false;
1260 if (output_ins
.forw_ref
) {
1262 for (i
= 0; i
< output_ins
.operands
; i
++) {
1263 if (output_ins
.oprs
[i
].opflags
& OPFLAG_FORWARD
) {
1264 struct forwrefinfo
*fwinf
= (struct forwrefinfo
*)saa_wstruct(forwrefs
);
1265 fwinf
->lineno
= globallineno
;
1274 if (output_ins
.opcode
== I_EQU
) {
1277 * Special `..' EQUs get processed in pass two,
1278 * except `..@' macro-processor EQUs which are done
1279 * in the normal place.
1281 if (!output_ins
.label
)
1282 nasm_error(ERR_NONFATAL
,
1283 "EQU not preceded by label");
1285 else if (output_ins
.label
[0] != '.' ||
1286 output_ins
.label
[1] != '.' ||
1287 output_ins
.label
[2] == '@') {
1288 if (output_ins
.operands
== 1 &&
1289 (output_ins
.oprs
[0].type
& IMMEDIATE
) &&
1290 output_ins
.oprs
[0].wrt
== NO_SEG
) {
1291 bool isext
= !!(output_ins
.oprs
[0].opflags
& OPFLAG_EXTERN
);
1292 def_label(output_ins
.label
,
1293 output_ins
.oprs
[0].segment
,
1294 output_ins
.oprs
[0].offset
, NULL
,
1296 } else if (output_ins
.operands
== 2
1297 && (output_ins
.oprs
[0].type
& IMMEDIATE
)
1298 && (output_ins
.oprs
[0].type
& COLON
)
1299 && output_ins
.oprs
[0].segment
== NO_SEG
1300 && output_ins
.oprs
[0].wrt
== NO_SEG
1301 && (output_ins
.oprs
[1].type
& IMMEDIATE
)
1302 && output_ins
.oprs
[1].segment
== NO_SEG
1303 && output_ins
.oprs
[1].wrt
== NO_SEG
) {
1304 def_label(output_ins
.label
,
1305 output_ins
.oprs
[0].offset
| SEG_ABS
,
1306 output_ins
.oprs
[1].offset
,
1307 NULL
, false, false);
1309 nasm_error(ERR_NONFATAL
,
1310 "bad syntax for EQU");
1314 * Special `..' EQUs get processed here, except
1315 * `..@' macro processor EQUs which are done above.
1317 if (output_ins
.label
[0] == '.' &&
1318 output_ins
.label
[1] == '.' &&
1319 output_ins
.label
[2] != '@') {
1320 if (output_ins
.operands
== 1 &&
1321 (output_ins
.oprs
[0].type
& IMMEDIATE
)) {
1322 define_label(output_ins
.label
,
1323 output_ins
.oprs
[0].segment
,
1324 output_ins
.oprs
[0].offset
,
1325 NULL
, false, false);
1326 } else if (output_ins
.operands
== 2
1327 && (output_ins
.oprs
[0].type
& IMMEDIATE
)
1328 && (output_ins
.oprs
[0].type
& COLON
)
1329 && output_ins
.oprs
[0].segment
== NO_SEG
1330 && (output_ins
.oprs
[1].type
& IMMEDIATE
)
1331 && output_ins
.oprs
[1].segment
== NO_SEG
) {
1332 define_label(output_ins
.label
,
1333 output_ins
.oprs
[0].offset
| SEG_ABS
,
1334 output_ins
.oprs
[1].offset
,
1335 NULL
, false, false);
1337 nasm_error(ERR_NONFATAL
,
1338 "bad syntax for EQU");
1341 } else { /* instruction isn't an EQU */
1344 int64_t l
= insn_size(location
.segment
, offs
, sb
,
1346 l
*= output_ins
.times
;
1348 /* if (using_debug_info) && output_ins.opcode != -1) */
1349 if (using_debug_info
)
1350 { /* fbk 03/25/01 */
1351 /* this is done here so we can do debug type info */
1353 TYS_ELEMENTS(output_ins
.operands
);
1354 switch (output_ins
.opcode
) {
1357 TYS_ELEMENTS(output_ins
.oprs
[0].offset
) | TY_BYTE
;
1361 TYS_ELEMENTS(output_ins
.oprs
[0].offset
) | TY_WORD
;
1365 TYS_ELEMENTS(output_ins
.oprs
[0].offset
) | TY_DWORD
;
1369 TYS_ELEMENTS(output_ins
.oprs
[0].offset
) | TY_QWORD
;
1373 TYS_ELEMENTS(output_ins
.oprs
[0].offset
) | TY_TBYTE
;
1377 TYS_ELEMENTS(output_ins
.oprs
[0].offset
) | TY_OWORD
;
1381 TYS_ELEMENTS(output_ins
.oprs
[0].offset
) | TY_YWORD
;
1384 typeinfo
|= TY_BYTE
;
1387 typeinfo
|= TY_WORD
;
1390 if (output_ins
.eops_float
)
1391 typeinfo
|= TY_FLOAT
;
1393 typeinfo
|= TY_DWORD
;
1396 typeinfo
|= TY_QWORD
;
1399 typeinfo
|= TY_TBYTE
;
1402 typeinfo
|= TY_OWORD
;
1405 typeinfo
|= TY_YWORD
;
1408 typeinfo
= TY_LABEL
;
1412 dfmt
->debug_typevalue(typeinfo
);
1416 set_curr_offs(offs
);
1419 * else l == -1 => invalid instruction, which will be
1420 * flagged as an error on pass 2
1424 offs
+= assemble(location
.segment
, offs
, sb
, &output_ins
);
1425 set_curr_offs(offs
);
1429 cleanup_insn(&output_ins
);
1433 location
.offset
= offs
= get_curr_offs();
1434 } /* end while (line = preproc->getline... */
1436 if (pass0
== 2 && global_offset_changed
&& !terminate_after_phase
)
1437 nasm_error(ERR_NONFATAL
,
1438 "phase error detected at end of assembly.");
1441 preproc
->cleanup(1);
1443 if ((passn
> 1 && !global_offset_changed
) || pass0
== 2) {
1445 } else if (global_offset_changed
&&
1446 global_offset_changed
< prev_offset_changed
) {
1447 prev_offset_changed
= global_offset_changed
;
1453 if (terminate_after_phase
)
1456 if ((stall_count
> 997U) || (passn
>= pass_max
)) {
1457 /* We get here if the labels don't converge
1458 * Example: FOO equ FOO + 1
1460 nasm_error(ERR_NONFATAL
,
1461 "Can't find valid values for all labels "
1462 "after %d passes, giving up.", passn
);
1463 nasm_error(ERR_NONFATAL
,
1464 "Possible causes: recursive EQUs, macro abuse.");
1469 preproc
->cleanup(0);
1471 if (!terminate_after_phase
&& opt_verbose_info
) {
1472 /* -On and -Ov switches */
1473 fprintf(stdout
, "info: assembly required 1+%d+1 passes\n", passn
-3);
1478 * gnu style error reporting
1479 * This function prints an error message to error_file in the
1480 * style used by GNU. An example would be:
1481 * file.asm:50: error: blah blah blah
1482 * where file.asm is the name of the file, 50 is the line number on
1483 * which the error occurs (or is detected) and "error:" is one of
1484 * the possible optional diagnostics -- it can be "error" or "warning"
1485 * or something else. Finally the line terminates with the actual
1488 * @param severity the severity of the warning or error
1489 * @param fmt the printf style format string
1491 static void nasm_verror_gnu(int severity
, const char *fmt
, va_list ap
)
1493 const char *currentfile
= NULL
;
1496 if (is_suppressed_warning(severity
))
1499 if (!(severity
& ERR_NOFILE
))
1500 src_get(&lineno
, ¤tfile
);
1502 if (!skip_this_pass(severity
)) {
1504 fprintf(error_file
, "%s:%"PRId32
": ", currentfile
, lineno
);
1506 fputs("nasm: ", error_file
);
1510 nasm_verror_common(severity
, fmt
, ap
);
1514 * MS style error reporting
1515 * This function prints an error message to error_file in the
1516 * style used by Visual C and some other Microsoft tools. An example
1518 * file.asm(50) : error: blah blah blah
1519 * where file.asm is the name of the file, 50 is the line number on
1520 * which the error occurs (or is detected) and "error:" is one of
1521 * the possible optional diagnostics -- it can be "error" or "warning"
1522 * or something else. Finally the line terminates with the actual
1525 * @param severity the severity of the warning or error
1526 * @param fmt the printf style format string
1528 static void nasm_verror_vc(int severity
, const char *fmt
, va_list ap
)
1530 const char *currentfile
= NULL
;
1533 if (is_suppressed_warning(severity
))
1536 if (!(severity
& ERR_NOFILE
))
1537 src_get(&lineno
, ¤tfile
);
1539 if (!skip_this_pass(severity
)) {
1541 fprintf(error_file
, "%s(%"PRId32
") : ", currentfile
, lineno
);
1543 fputs("nasm: ", error_file
);
1547 nasm_verror_common(severity
, fmt
, ap
);
1551 * check to see if this is a suppressable warning
1553 static inline bool is_valid_warning(int severity
)
1555 /* Not a warning at all */
1556 if ((severity
& ERR_MASK
) != ERR_WARNING
)
1559 return WARN_IDX(severity
) < ERR_WARN_ALL
;
1563 * check for suppressed warning
1564 * checks for suppressed warning or pass one only warning and we're
1567 * @param severity the severity of the warning or error
1568 * @return true if we should abort error/warning printing
1570 static bool is_suppressed_warning(int severity
)
1572 /* Might be a warning but suppresed explicitly */
1573 if (is_valid_warning(severity
))
1574 return !(warning_state
[WARN_IDX(severity
)] & WARN_ST_ENABLED
);
1579 static bool warning_is_error(int severity
)
1581 if (is_valid_warning(severity
))
1582 return !!(warning_state
[WARN_IDX(severity
)] & WARN_ST_ERROR
);
1587 static bool skip_this_pass(int severity
)
1589 /* See if it's a pass-specific warning which should be skipped. */
1591 if ((severity
& ERR_MASK
) > ERR_WARNING
)
1595 * passn is 1 on the very first pass only.
1596 * pass0 is 2 on the code-generation (final) pass only.
1597 * These are the passes we care about in this case.
1599 return (((severity
& ERR_PASS1
) && passn
!= 1) ||
1600 ((severity
& ERR_PASS2
) && pass0
!= 2));
1604 * common error reporting
1605 * This is the common back end of the error reporting schemes currently
1606 * implemented. It prints the nature of the warning and then the
1607 * specific error message to error_file and may or may not return. It
1608 * doesn't return if the error severity is a "panic" or "debug" type.
1610 * @param severity the severity of the warning or error
1611 * @param fmt the printf style format string
1613 static void nasm_verror_common(int severity
, const char *fmt
, va_list args
)
1618 switch (severity
& (ERR_MASK
|ERR_NO_SEVERITY
)) {
1639 vsnprintf(msg
, sizeof msg
- 64, fmt
, args
);
1640 if (is_valid_warning(severity
) && WARN_IDX(severity
) != ERR_WARN_OTHER
) {
1641 char *p
= strchr(msg
, '\0');
1642 snprintf(p
, 64, " [-w+%s]", warnings
[WARN_IDX(severity
)].name
);
1645 if (!skip_this_pass(severity
))
1646 fprintf(error_file
, "%s%s\n", pfx
, msg
);
1648 /* Are we recursing from error_list_macros? */
1649 if (severity
& ERR_PP_LISTMACRO
)
1653 * Don't suppress this with skip_this_pass(), or we don't get
1654 * pass1 or preprocessor warnings in the list file
1656 lfmt
->error(severity
, pfx
, msg
);
1658 if (severity
& ERR_USAGE
)
1661 preproc
->error_list_macros(severity
);
1663 switch (severity
& ERR_MASK
) {
1665 /* no further action, by definition */
1668 /* Treat warnings as errors */
1669 if (warning_is_error(severity
))
1670 terminate_after_phase
= true;
1673 terminate_after_phase
= true;
1683 exit(1); /* instantly die */
1684 break; /* placate silly compilers */
1687 /* abort(); */ /* halt, catch fire, and dump core */
1698 static void usage(void)
1700 fputs("type `nasm -h' for help\n", error_file
);