diff options
Diffstat (limited to 'contrib/binutils/gas/as.c')
| -rw-r--r-- | contrib/binutils/gas/as.c | 569 |
1 files changed, 313 insertions, 256 deletions
diff --git a/contrib/binutils/gas/as.c b/contrib/binutils/gas/as.c index 346ecc8..0911aa1 100644 --- a/contrib/binutils/gas/as.c +++ b/contrib/binutils/gas/as.c @@ -21,16 +21,15 @@ 02111-1307, USA. */ /* Main program for AS; a 32-bit assembler of GNU. - * Understands command arguments. - * Has a few routines that don't fit in other modules because they - * are shared. - * - * bugs - * - * : initialisers - * Since no-one else says they will support them in future: I - * don't support them now. - */ + Understands command arguments. + Has a few routines that don't fit in other modules because they + are shared. + + bugs + + : initialisers + Since no-one else says they will support them in future: I + don't support them now. */ #include "ansidecl.h" @@ -42,6 +41,11 @@ #include "sb.h" #include "macro.h" #include "dwarf2dbg.h" +#include "dw2gencfi.h" + +#ifdef BFD_ASSEMBLER +#include "bfdver.h" +#endif #ifdef HAVE_ITBL_CPU #include "itbl-ops.h" @@ -56,31 +60,40 @@ extern PTR sbrk (); #endif #endif -static void show_usage PARAMS ((FILE *)); -static void parse_args PARAMS ((int *, char ***)); -static void dump_statistics PARAMS ((void)); -static void perform_an_assembly_pass PARAMS ((int argc, char **argv)); -static int macro_expr PARAMS ((const char *, int, sb *, int *)); +#ifdef USING_CGEN +/* Perform any cgen specific initialisation for gas. */ +extern void gas_cgen_begin (void); +#endif + +/* Keep a record of the itbl files we read in. */ +struct itbl_file_list +{ + struct itbl_file_list *next; + char *name; +}; + +/* We build a list of defsyms as we read the options, and then define + them after we have initialized everything. */ +struct defsym_list +{ + struct defsym_list *next; + char *name; + valueT value; +}; + /* True if a listing is wanted. */ int listing; -/* Name of listing file. */ -static char *listing_filename = NULL; - /* Type of debugging to generate. */ - enum debug_info_type debug_type = DEBUG_UNSPECIFIED; +int use_gnu_debug_info_extensions = 0; /* Maximum level of macro nesting. */ int max_macro_nest = 100; /* argv[0] */ -char *myname; -#ifdef BFD_ASSEMBLER -segT reg_section, expr_section; -segT text_section, data_section, bss_section; -#endif +char * myname; /* The default obstack chunk size. If we set this to zero, the obstack code will use whatever will fit in a 4096 byte block. */ @@ -90,25 +103,26 @@ int chunksize = 0; Then the chunk sizes for gas and bfd will be reduced. */ int debug_memory = 0; -/* We build a list of defsyms as we read the options, and then define - them after we have initialized everything. */ +/* Enable verbose mode. */ +int verbose = 0; -struct defsym_list { - struct defsym_list *next; - char *name; - valueT value; -}; +#ifdef BFD_ASSEMBLER +segT reg_section; +segT expr_section; +segT text_section; +segT data_section; +segT bss_section; +#endif + +/* Name of listing file. */ +static char *listing_filename = NULL; static struct defsym_list *defsyms; -/* Keep a record of the itbl files we read in. */ +static struct itbl_file_list *itbl_files; -struct itbl_file_list { - struct itbl_file_list *next; - char *name; -}; +static long start_time; -static struct itbl_file_list *itbl_files; #ifdef USE_EMULATIONS #define EMULATION_ENVIRON "AS_EMULATION" @@ -121,12 +135,8 @@ extern struct emulation crisaout, criself; static struct emulation *const emulations[] = { EMULATIONS }; static const int n_emulations = sizeof (emulations) / sizeof (emulations[0]); -static void select_emulation_mode PARAMS ((int, char **)); - static void -select_emulation_mode (argc, argv) - int argc; - char **argv; +select_emulation_mode (int argc, char **argv) { int i; char *p, *em = 0; @@ -170,14 +180,14 @@ select_emulation_mode (argc, argv) } const char * -default_emul_bfd_name () +default_emul_bfd_name (void) { abort (); return NULL; } void -common_emul_init () +common_emul_init (void) { this_format = this_emulation->format; @@ -199,9 +209,10 @@ common_emul_init () #endif void -print_version_id () +print_version_id (void) { static int printed; + if (printed) return; printed = 1; @@ -216,8 +227,7 @@ print_version_id () } static void -show_usage (stream) - FILE *stream; +show_usage (FILE * stream) { fprintf (stream, _("Usage: %s [option...] [asmfile...]\n"), myname); @@ -256,11 +266,19 @@ Options:\n\ emulate output (default %s)\n"), def_em); } #endif +#if defined BFD_ASSEMBLER && (defined OBJ_ELF || defined OBJ_MAYBE_ELF) + fprintf (stream, _("\ + --execstack require executable stack for this object\n")); + fprintf (stream, _("\ + --noexecstack don't require executable stack for this object\n")); +#endif fprintf (stream, _("\ -f skip whitespace and comment preprocessing\n")); fprintf (stream, _("\ --gstabs generate stabs debugging information\n")); fprintf (stream, _("\ + --gstabs+ generate stabs debug info with GNU extensions\n")); + fprintf (stream, _("\ --gdwarf2 generate DWARF2 debugging information\n")); fprintf (stream, _("\ --help show this message and exit\n")); @@ -337,60 +355,84 @@ Options:\n\ md_parse_option definitions in config/tc-*.c. */ static void -parse_args (pargc, pargv) - int *pargc; - char ***pargv; +parse_args (int * pargc, char *** pargv) { - int old_argc, new_argc; - char **old_argv, **new_argv; - + int old_argc; + int new_argc; + char ** old_argv; + char ** new_argv; /* Starting the short option string with '-' is for programs that expect options and other ARGV-elements in any order and that care about the ordering of the two. We describe each non-option ARGV-element as if it were the argument of an option with character code 1. */ - char *shortopts; extern const char *md_shortopts; - static const char std_shortopts[] = { + static const char std_shortopts[] = + { '-', 'J', #ifndef WORKING_DOT_WORD /* -K is not meaningful if .word is not being hacked. */ 'K', #endif - 'L', 'M', 'R', 'W', 'Z', 'f', 'a', ':', ':', 'D', 'I', ':', 'o', ':', + 'L', 'M', 'R', 'W', 'Z', 'a', ':', ':', 'D', 'f', 'I', ':', 'o', ':', #ifndef VMS /* -v takes an argument on VMS, so we don't make it a generic option. */ 'v', #endif 'w', 'X', - /* New option for extending instruction set (see also --itbl below) */ + /* New option for extending instruction set (see also --itbl below). */ 't', ':', '\0' }; struct option *longopts; extern struct option md_longopts[]; extern size_t md_longopts_size; - static const struct option std_longopts[] = { -#define OPTION_HELP (OPTION_STD_BASE) + /* Codes used for the long options with no short synonyms. */ + enum option_values + { + OPTION_HELP = OPTION_STD_BASE, + OPTION_NOCPP, + OPTION_STATISTICS, + OPTION_VERSION, + OPTION_DUMPCONFIG, + OPTION_VERBOSE, + OPTION_EMULATION, + OPTION_DEFSYM, + OPTION_INSTTBL, + OPTION_LISTING_LHS_WIDTH, + OPTION_LISTING_LHS_WIDTH2, + OPTION_LISTING_RHS_WIDTH, + OPTION_LISTING_CONT_LINES, + OPTION_DEPFILE, + OPTION_GSTABS, + OPTION_GSTABS_PLUS, + OPTION_STRIP_LOCAL_ABSOLUTE, + OPTION_TRADITIONAL_FORMAT, + OPTION_GDWARF2, + OPTION_WARN, + OPTION_TARGET_HELP, + OPTION_EXECSTACK, + OPTION_NOEXECSTACK, + OPTION_WARN_FATAL + }; + + static const struct option std_longopts[] = + { {"help", no_argument, NULL, OPTION_HELP}, + /* getopt allows abbreviations, so we do this to stop it from + treating -k as an abbreviation for --keep-locals. Some + ports use -k to enable PIC assembly. */ + {"keep-locals", no_argument, NULL, 'L'}, {"keep-locals", no_argument, NULL, 'L'}, {"mri", no_argument, NULL, 'M'}, -#define OPTION_NOCPP (OPTION_STD_BASE + 1) {"nocpp", no_argument, NULL, OPTION_NOCPP}, -#define OPTION_STATISTICS (OPTION_STD_BASE + 2) {"statistics", no_argument, NULL, OPTION_STATISTICS}, -#define OPTION_VERSION (OPTION_STD_BASE + 3) {"version", no_argument, NULL, OPTION_VERSION}, -#define OPTION_DUMPCONFIG (OPTION_STD_BASE + 4) {"dump-config", no_argument, NULL, OPTION_DUMPCONFIG}, -#define OPTION_VERBOSE (OPTION_STD_BASE + 5) {"verbose", no_argument, NULL, OPTION_VERBOSE}, -#define OPTION_EMULATION (OPTION_STD_BASE + 6) {"emulation", required_argument, NULL, OPTION_EMULATION}, -#define OPTION_DEFSYM (OPTION_STD_BASE + 7) {"defsym", required_argument, NULL, OPTION_DEFSYM}, -#define OPTION_INSTTBL (OPTION_STD_BASE + 8) /* New option for extending instruction set (see also -t above). The "-t file" or "--itbl file" option extends the basic set of valid instructions by reading "file", a text file containing a @@ -398,30 +440,23 @@ parse_args (pargc, pargv) formats are added to the built-in set of instructions, and mnemonics for new registers may also be defined. */ {"itbl", required_argument, NULL, OPTION_INSTTBL}, -#define OPTION_LISTING_LHS_WIDTH (OPTION_STD_BASE + 9) {"listing-lhs-width", required_argument, NULL, OPTION_LISTING_LHS_WIDTH}, -#define OPTION_LISTING_LHS_WIDTH2 (OPTION_STD_BASE + 10) {"listing-lhs-width2", required_argument, NULL, OPTION_LISTING_LHS_WIDTH2}, -#define OPTION_LISTING_RHS_WIDTH (OPTION_STD_BASE + 11) {"listing-rhs-width", required_argument, NULL, OPTION_LISTING_RHS_WIDTH}, -#define OPTION_LISTING_CONT_LINES (OPTION_STD_BASE + 12) {"listing-cont-lines", required_argument, NULL, OPTION_LISTING_CONT_LINES}, -#define OPTION_DEPFILE (OPTION_STD_BASE + 13) {"MD", required_argument, NULL, OPTION_DEPFILE}, -#define OPTION_GSTABS (OPTION_STD_BASE + 14) {"gstabs", no_argument, NULL, OPTION_GSTABS}, -#define OPTION_STRIP_LOCAL_ABSOLUTE (OPTION_STD_BASE + 15) + {"gstabs+", no_argument, NULL, OPTION_GSTABS_PLUS}, {"strip-local-absolute", no_argument, NULL, OPTION_STRIP_LOCAL_ABSOLUTE}, -#define OPTION_TRADITIONAL_FORMAT (OPTION_STD_BASE + 16) {"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT}, -#define OPTION_GDWARF2 (OPTION_STD_BASE + 17) {"gdwarf2", no_argument, NULL, OPTION_GDWARF2}, {"no-warn", no_argument, NULL, 'W'}, -#define OPTION_WARN (OPTION_STD_BASE + 18) {"warn", no_argument, NULL, OPTION_WARN}, -#define OPTION_TARGET_HELP (OPTION_STD_BASE + 19) {"target-help", no_argument, NULL, OPTION_TARGET_HELP}, -#define OPTION_WARN_FATAL (OPTION_STD_BASE + 20) +#if defined BFD_ASSEMBLER && (defined OBJ_ELF || defined OBJ_MAYBE_ELF) + {"execstack", no_argument, NULL, OPTION_EXECSTACK}, + {"noexecstack", no_argument, NULL, OPTION_NOEXECSTACK}, +#endif {"fatal-warnings", no_argument, NULL, OPTION_WARN_FATAL} /* When you add options here, check that they do not collide with OPTION_MD_BASE. See as.h. */ @@ -431,13 +466,10 @@ parse_args (pargc, pargv) dependent list. Include space for an extra NULL option and always NULL terminate. */ shortopts = concat (std_shortopts, md_shortopts, (char *) NULL); - longopts = (struct option *) xmalloc (sizeof (std_longopts) - + md_longopts_size - + sizeof (struct option)); + longopts = xmalloc (sizeof (std_longopts) + md_longopts_size + sizeof (struct option)); memcpy (longopts, std_longopts, sizeof (std_longopts)); - memcpy ((char *) longopts + sizeof (std_longopts), - md_longopts, md_longopts_size); - memset ((char *) longopts + sizeof (std_longopts) + md_longopts_size, + memcpy (((char *) longopts) + sizeof (std_longopts), md_longopts, md_longopts_size); + memset (((char *) longopts) + sizeof (std_longopts) + md_longopts_size, 0, sizeof (struct option)); /* Make a local copy of the old argv. */ @@ -445,7 +477,7 @@ parse_args (pargc, pargv) old_argv = *pargv; /* Initialize a new argv that contains no options. */ - new_argv = (char **) xmalloc (sizeof (char *) * (old_argc + 1)); + new_argv = xmalloc (sizeof (char *) * (old_argc + 1)); new_argv[0] = old_argv[0]; new_argc = 1; new_argv[new_argc] = NULL; @@ -469,7 +501,7 @@ parse_args (pargc, pargv) if (md_parse_option (optc, optarg) != 0) break; /* `-v' isn't included in the general short_opts list, so check for - it explicity here before deciding we've gotten a bad argument. */ + it explicitly here before deciding we've gotten a bad argument. */ if (optc == 'v') { #ifdef VMS @@ -485,6 +517,7 @@ parse_args (pargc, pargv) #endif case OPTION_VERBOSE: print_version_id (); + verbose = 1; break; } /* Fall through. */ @@ -574,7 +607,7 @@ the GNU General Public License. This program has absolutely no warranty.\n")); #else i = strtol (s, (char **) NULL, 0); #endif - n = (struct defsym_list *) xmalloc (sizeof *n); + n = xmalloc (sizeof *n); n->next = defsyms; n->name = optarg; n->value = i; @@ -595,7 +628,7 @@ the GNU General Public License. This program has absolutely no warranty.\n")); break; } - n = (struct itbl_file_list *) xmalloc (sizeof *n); + n = xmalloc (sizeof * n); n->next = itbl_files; n->name = optarg; itbl_files = n; @@ -615,6 +648,9 @@ the GNU General Public License. This program has absolutely no warranty.\n")); start_dependencies (optarg); break; + case OPTION_GSTABS_PLUS: + use_gnu_debug_info_extensions = 1; + /* Fall through. */ case OPTION_GSTABS: debug_type = DEBUG_STABS; break; @@ -632,7 +668,6 @@ the GNU General Public License. This program has absolutely no warranty.\n")); flag_warn_displacement = 1; break; #endif - case 'L': flag_keep_locals = 1; break; @@ -681,6 +716,17 @@ the GNU General Public License. This program has absolutely no warranty.\n")); flag_fatal_warnings = 1; break; +#if defined BFD_ASSEMBLER && (defined OBJ_ELF || defined OBJ_MAYBE_ELF) + case OPTION_EXECSTACK: + flag_execstack = 1; + flag_noexecstack = 0; + break; + + case OPTION_NOEXECSTACK: + flag_noexecstack = 1; + flag_execstack = 0; + break; +#endif case 'Z': flag_always_generate_output = 1; break; @@ -772,14 +818,168 @@ the GNU General Public License. This program has absolutely no warranty.\n")); #endif } -static long start_time; +static void +dump_statistics (void) +{ +#ifdef HAVE_SBRK + char *lim = (char *) sbrk (0); +#endif + long run_time = get_run_time () - start_time; + + fprintf (stderr, _("%s: total time in assembly: %ld.%06ld\n"), + myname, run_time / 1000000, run_time % 1000000); +#ifdef HAVE_SBRK + fprintf (stderr, _("%s: data size %ld\n"), + myname, (long) (lim - (char *) &environ)); +#endif + + subsegs_print_statistics (stderr); + write_print_statistics (stderr); + symbol_print_statistics (stderr); + read_print_statistics (stderr); + +#ifdef tc_print_statistics + tc_print_statistics (stderr); +#endif + +#ifdef obj_print_statistics + obj_print_statistics (stderr); +#endif +} + +/* The interface between the macro code and gas expression handling. */ + +static int +macro_expr (const char *emsg, int idx, sb *in, int *val) +{ + char *hold; + expressionS ex; + + sb_terminate (in); + + hold = input_line_pointer; + input_line_pointer = in->ptr + idx; + expression (&ex); + idx = input_line_pointer - in->ptr; + input_line_pointer = hold; + + if (ex.X_op != O_constant) + as_bad ("%s", emsg); + + *val = (int) ex.X_add_number; + + return idx; +} + +/* Here to attempt 1 pass over each input file. + We scan argv[*] looking for filenames or exactly "" which is + shorthand for stdin. Any argv that is NULL is not a file-name. + We set need_pass_2 TRUE if, after this, we still have unresolved + expressions of the form (unknown value)+-(unknown value). + + Note the un*x semantics: there is only 1 logical input file, but it + may be a catenation of many 'physical' input files. */ + +static void +perform_an_assembly_pass (int argc, char ** argv) +{ + int saw_a_file = 0; +#ifdef BFD_ASSEMBLER + flagword applicable; +#endif + + need_pass_2 = 0; + +#ifndef BFD_ASSEMBLER +#ifdef MANY_SEGMENTS + { + unsigned int i; + for (i = SEG_E0; i < SEG_UNKNOWN; i++) + segment_info[i].fix_root = 0; + } + /* Create the three fixed ones. */ + { + segT seg; + +#ifdef TE_APOLLO + seg = subseg_new (".wtext", 0); +#else + seg = subseg_new (".text", 0); +#endif + assert (seg == SEG_E0); + seg = subseg_new (".data", 0); + assert (seg == SEG_E1); + seg = subseg_new (".bss", 0); + assert (seg == SEG_E2); +#ifdef TE_APOLLO + create_target_segments (); +#endif + } + +#else /* not MANY_SEGMENTS. */ + text_fix_root = NULL; + data_fix_root = NULL; + bss_fix_root = NULL; +#endif /* not MANY_SEGMENTS. */ +#else /* BFD_ASSEMBLER. */ + /* Create the standard sections, and those the assembler uses + internally. */ + text_section = subseg_new (TEXT_SECTION_NAME, 0); + data_section = subseg_new (DATA_SECTION_NAME, 0); + bss_section = subseg_new (BSS_SECTION_NAME, 0); + /* @@ FIXME -- we're setting the RELOC flag so that sections are assumed + to have relocs, otherwise we don't find out in time. */ + applicable = bfd_applicable_section_flags (stdoutput); + bfd_set_section_flags (stdoutput, text_section, + applicable & (SEC_ALLOC | SEC_LOAD | SEC_RELOC + | SEC_CODE | SEC_READONLY)); + bfd_set_section_flags (stdoutput, data_section, + applicable & (SEC_ALLOC | SEC_LOAD | SEC_RELOC + | SEC_DATA)); + bfd_set_section_flags (stdoutput, bss_section, applicable & SEC_ALLOC); + seg_info (bss_section)->bss = 1; + subseg_new (BFD_ABS_SECTION_NAME, 0); + subseg_new (BFD_UND_SECTION_NAME, 0); + reg_section = subseg_new ("*GAS `reg' section*", 0); + expr_section = subseg_new ("*GAS `expr' section*", 0); -int main PARAMS ((int, char **)); +#endif /* BFD_ASSEMBLER. */ + + subseg_set (text_section, 0); + + /* This may add symbol table entries, which requires having an open BFD, + and sections already created, in BFD_ASSEMBLER mode. */ + md_begin (); + +#ifdef USING_CGEN + gas_cgen_begin (); +#endif +#ifdef obj_begin + obj_begin (); +#endif + + /* Skip argv[0]. */ + argv++; + argc--; + + while (argc--) + { + if (*argv) + { /* Is it a file-name argument? */ + PROGRESS (1); + saw_a_file++; + /* argv->"" if stdin desired, else->filename. */ + read_a_source_file (*argv); + } + argv++; /* Completed that argv. */ + } + if (!saw_a_file) + read_a_source_file (""); +} + int -main (argc, argv) - int argc; - char **argv; +main (int argc, char ** argv) { int macro_alternate; int macro_strip_at; @@ -890,10 +1090,27 @@ main (argc, argv) md_end (); #endif +#if defined BFD_ASSEMBLER && (defined OBJ_ELF || defined OBJ_MAYBE_ELF) + if ((flag_execstack || flag_noexecstack) + && OUTPUT_FLAVOR == bfd_target_elf_flavour) + { + segT gnustack; + + gnustack = subseg_new (".note.GNU-stack", 0); + bfd_set_section_flags (stdoutput, gnustack, + SEC_READONLY | (flag_execstack ? SEC_CODE : 0)); + + } +#endif + /* If we've been collecting dwarf2 .debug_line info, either for assembly debugging or on behalf of the compiler, emit it now. */ dwarf2_finish (); + /* If we constructed dwarf2 .eh_frame info, either via .cfi + directives from the user or by the backend, emit it now. */ + cfi_finish (); + if (seen_at_least_1_file () && (flag_always_generate_output || had_errors () == 0)) keep_it = 1; @@ -915,7 +1132,7 @@ main (argc, argv) listing_print (listing_filename); #endif -#ifndef OBJ_VMS /* does its own file handling */ +#ifndef OBJ_VMS /* Does its own file handling. */ #ifndef BFD_ASSEMBLER if (keep_it) #endif @@ -946,163 +1163,3 @@ main (argc, argv) xexit (EXIT_SUCCESS); } -static void -dump_statistics () -{ -#ifdef HAVE_SBRK - char *lim = (char *) sbrk (0); -#endif - long run_time = get_run_time () - start_time; - - fprintf (stderr, _("%s: total time in assembly: %ld.%06ld\n"), - myname, run_time / 1000000, run_time % 1000000); -#ifdef HAVE_SBRK - fprintf (stderr, _("%s: data size %ld\n"), - myname, (long) (lim - (char *) &environ)); -#endif - - subsegs_print_statistics (stderr); - write_print_statistics (stderr); - symbol_print_statistics (stderr); - read_print_statistics (stderr); - -#ifdef tc_print_statistics - tc_print_statistics (stderr); -#endif -#ifdef obj_print_statistics - obj_print_statistics (stderr); -#endif -} - -/* Here to attempt 1 pass over each input file. - We scan argv[*] looking for filenames or exactly "" which is - shorthand for stdin. Any argv that is NULL is not a file-name. - We set need_pass_2 TRUE if, after this, we still have unresolved - expressions of the form (unknown value)+-(unknown value). - - Note the un*x semantics: there is only 1 logical input file, but it - may be a catenation of many 'physical' input files. */ - -static void -perform_an_assembly_pass (argc, argv) - int argc; - char **argv; -{ - int saw_a_file = 0; -#ifdef BFD_ASSEMBLER - flagword applicable; -#endif - - need_pass_2 = 0; - -#ifndef BFD_ASSEMBLER -#ifdef MANY_SEGMENTS - { - unsigned int i; - for (i = SEG_E0; i < SEG_UNKNOWN; i++) - segment_info[i].fix_root = 0; - } - /* Create the three fixed ones. */ - { - segT seg; - -#ifdef TE_APOLLO - seg = subseg_new (".wtext", 0); -#else - seg = subseg_new (".text", 0); -#endif - assert (seg == SEG_E0); - seg = subseg_new (".data", 0); - assert (seg == SEG_E1); - seg = subseg_new (".bss", 0); - assert (seg == SEG_E2); -#ifdef TE_APOLLO - create_target_segments (); -#endif - } - -#else /* not MANY_SEGMENTS */ - text_fix_root = NULL; - data_fix_root = NULL; - bss_fix_root = NULL; -#endif /* not MANY_SEGMENTS */ -#else /* BFD_ASSEMBLER */ - /* Create the standard sections, and those the assembler uses - internally. */ - text_section = subseg_new (TEXT_SECTION_NAME, 0); - data_section = subseg_new (DATA_SECTION_NAME, 0); - bss_section = subseg_new (BSS_SECTION_NAME, 0); - /* @@ FIXME -- we're setting the RELOC flag so that sections are assumed - to have relocs, otherwise we don't find out in time. */ - applicable = bfd_applicable_section_flags (stdoutput); - bfd_set_section_flags (stdoutput, text_section, - applicable & (SEC_ALLOC | SEC_LOAD | SEC_RELOC - | SEC_CODE | SEC_READONLY)); - bfd_set_section_flags (stdoutput, data_section, - applicable & (SEC_ALLOC | SEC_LOAD | SEC_RELOC - | SEC_DATA)); - bfd_set_section_flags (stdoutput, bss_section, applicable & SEC_ALLOC); - seg_info (bss_section)->bss = 1; - subseg_new (BFD_ABS_SECTION_NAME, 0); - subseg_new (BFD_UND_SECTION_NAME, 0); - reg_section = subseg_new ("*GAS `reg' section*", 0); - expr_section = subseg_new ("*GAS `expr' section*", 0); - -#endif /* BFD_ASSEMBLER */ - - subseg_set (text_section, 0); - - /* This may add symbol table entries, which requires having an open BFD, - and sections already created, in BFD_ASSEMBLER mode. */ - md_begin (); - -#ifdef obj_begin - obj_begin (); -#endif - - /* Skip argv[0]. */ - argv++; - argc--; - - while (argc--) - { - if (*argv) - { /* Is it a file-name argument? */ - PROGRESS (1); - saw_a_file++; - /* argv->"" if stdin desired, else->filename */ - read_a_source_file (*argv); - } - argv++; /* completed that argv */ - } - if (!saw_a_file) - read_a_source_file (""); -} - -/* The interface between the macro code and gas expression handling. */ - -static int -macro_expr (emsg, idx, in, val) - const char *emsg; - int idx; - sb *in; - int *val; -{ - char *hold; - expressionS ex; - - sb_terminate (in); - - hold = input_line_pointer; - input_line_pointer = in->ptr + idx; - expression (&ex); - idx = input_line_pointer - in->ptr; - input_line_pointer = hold; - - if (ex.X_op != O_constant) - as_bad ("%s", emsg); - - *val = (int) ex.X_add_number; - - return idx; -} |
