unsigned read(void* buf, unsigned len)
{
auto allowed = std::min(len, read_available());
memcpy(buf, read_begin(), allowed);
mNumRead += allowed;
return allowed;
}
int
main(
int argc,
char **argv,
char **envp)
{
int work_argc; /* variable copy of argc */
char **work_argv; /* variable copy of argv */
char *arg; /* an arg to program */
char a; /* an arg flag (after -) */
char *out_file_name;/* name of object file, argument to -o if specified */
int i;
struct directory_stack *dirtmp;
progname = argv[0];
/*
* Set up to catch the signals listed in sig[] that are not ignored.
*/
for(i = 0; sig[i] != 0; i++)
if(signal(sig[i], SIG_IGN) != SIG_IGN)
signal(sig[i], got_sig);
/*
* Set the default for the flags that will be parsed.
*/
memset(flagseen, '\0', sizeof(flagseen)); /* aint seen nothing yet */
out_file_name = "a.out"; /* default .o file */
/* This is the -dynamic flag, which is now the default */
flagseen[(int)'k'] = TRUE;
/*
* Parse arguments, but we are only interested in flags.
* When we find a flag, we process it then make it's argv[] NULL.
* This helps any future argv[] scanners avoid what we processed.
* Since it is easy to do here we interpret the special arg "-"
* to mean "use stdin" and we set that argv[] pointing to "".
* After we have munged argv[], the only things left are source file
* name(s) and ""(s) denoting stdin. These file names are used
* (perhaps more than once) later.
*/
work_argc = argc - 1; /* don't count argv[0] */
work_argv = argv + 1; /* skip argv[0] */
for( ; work_argc-- ; work_argv++){
/* work_argv points to this argument */
arg = *work_argv;
/* Filename. We need it later. */
if(*arg != '-')
continue;
if(strcmp(arg, "--gstabs") == 0){
/* generate stabs for debugging assembly code */
flagseen[(int)'g'] = TRUE;
*work_argv = NULL; /* NULL means 'not a file-name' */
continue;
}
if(strcmp(arg, "--gdwarf2") == 0){
as_fatal("%s: I don't understand %s flag!", progname, arg);
}
/* Keep scanning args looking for flags. */
if (arg[1] == '-' && arg[2] == 0) {
/* "--" as an argument means read STDIN */
/* on this scan, we don't want to think about filenames */
*work_argv = ""; /* Code that means 'use stdin'. */
continue;
}
/* This better be a switch ( -l where l is a letter. */
arg++; /* -> letter. */
/* scan all the 1-char flags */
while((a = *arg)){
arg ++; /* arg -> after letter. */
a &= 0x7F; /* ascii only please */
if(flagseen[(int)a] && (a != 'I') && (a != 'a') && (a != 'f') &&
(a != 'd') && (a != 's') && (a != 'k'))
as_warn("%s: Flag option -%c has already been seen!",
progname, a);
if(a != 'f' && a != 'n')
flagseen[(int)a] = TRUE;
switch(a){
case 'f':
if(strcmp(arg-1, "force_cpusubtype_ALL") == 0){
force_cpusubtype_ALL = 1;
arg = ""; /* Finished with this arg. */
break;
}
/* -f means fast - no need for "app" preprocessor. */
flagseen[(int)a] = TRUE;
break;
case 'L': /* -L means keep L* symbols */
break;
case 'o':
if(*arg != '\0') /* Rest of argument is object file-name. */
out_file_name = arg;
else if(work_argc){ /* Want next arg for a file-name. */
*work_argv = NULL; /* This is not a file-name. */
work_argc--;
out_file_name = *++work_argv;
}
else
as_warn("%s: I expected a filename after -o. \"%s\" "
"assumed.", progname, out_file_name);
arg = ""; /* Finished with this arg. */
break;
case 'R':
/* -R means put data into text segment */
as_warn("%s: -R option not supported (use the "
".const directive)", progname);
flagseen['R'] = FALSE;
break;
case 'v':
fprintf(stderr,"Apple Computer, Inc. version "
"%s, ", apple_version);
fprintf(stderr, version_string);
if(*arg && strcmp(arg,"ersion"))
as_warn("Unknown -v option ignored");
while(*arg)
arg++; /* Skip the rest */
break;
case 'W':
/* -W means don't warn about things */
break;
case 'I':
/* Add directory to path for includes */
dirtmp = (struct directory_stack *)
xmalloc(sizeof(struct directory_stack));
/* New one goes on the end */
dirtmp->next = 0;
if(include == 0)
include = dirtmp;
else
include_tail->next = dirtmp;
/* Tail follows the last one */
include_tail = dirtmp;
/* Rest of argument is include file-name. */
if(*arg)
dirtmp->fname = arg;
else if (work_argc){
/* Want next arg for a file-name. */
/* This is not a file-name. */
*work_argv = NULL;
work_argc--;
dirtmp->fname = *++work_argv;
}
else
as_warn("I expected a filename after -I.");
arg = ""; /* Finished with this arg. */
break;
case 'g':
/* generate stabs for debugging assembly code */
break;
case 'n':
#ifdef PPC
if(strcmp(arg-1, "no_ppc601") == 0)
goto unknown_flag;
#endif
/* no default .text section */
flagseen[(int)a] = TRUE;
break;
#ifdef PPC
case 'p':
if(strcmp(arg-1, "ppcasm") == 0)
goto unknown_flag;
#endif
case 'd':
if(strcmp(arg-1, "dynamic") == 0){
arg = ""; /* Finished with this arg. */
flagseen[(int)'k'] = TRUE;
break;
}
goto unknown_flag;
case 's':
if(strcmp(arg-1, "static") == 0){
arg = ""; /* Finished with this arg. */
flagseen[(int)'k'] = FALSE;
break;
}
goto unknown_flag;
case 'N':
if(strcmp(arg-1, "NEXTSTEP-deployment-target") == 0){
arg = ""; /* Finished with this arg. */
/* Want next arg for a <release_tag> */
if(work_argc){
/* This, "-NEXTST..." is not a file-name. */
*work_argv = NULL;
work_argc--;
work_argv++;
if(strcmp(*work_argv, "3.3") == 0){
flagseen[(int)'k'] = TRUE;
}
else if(strcmp(*work_argv, "3.2") == 0){
flagseen[(int)'k'] = FALSE;
}
else{
as_fatal("I expected '3.2' or '3.3' after "
"-NEXTSTEP-deployment-target.");
}
}
else
as_fatal("I expected a <release_tag> "
"after -NEXTSTEP-deployment-target.");
break;
}
goto unknown_flag;
case 'k':
/* use new features incompatible with 3.2 */
break;
case 'V':
/* as driver's -V, verbose, flag */
break;
case 'a':
if(strcmp(arg-1, "arch_multiple") == 0){
arch_multiple = 1;
arg = ""; /* Finished with this arg. */
break;
}
else if(strcmp(arg-1, "arch") == 0){
arg = ""; /* Finished with this arg. */
/* Want next arg for a <arch_type> */
if(work_argc){
/* This, "-arch" is not a file-name. */
*work_argv = NULL;
work_argc--;
work_argv++;
#ifdef M68K
if(strcmp(*work_argv, "m68030") == 0){
if(archflag_cpusubtype != -1 &&
archflag_cpusubtype !=
CPU_SUBTYPE_MC68030_ONLY)
as_fatal("can't specify both "
"-arch m68030 and -arch "
"m68040");
specific_archflag = *work_argv;
archflag_cpusubtype =
CPU_SUBTYPE_MC68030_ONLY;
}
else if(strcmp(*work_argv,
"m68040") == 0){
if(archflag_cpusubtype != -1 &&
archflag_cpusubtype !=
CPU_SUBTYPE_MC68040)
as_fatal("can't specify both "
"-arch m68030 and -arch "
"m68040");
specific_archflag = *work_argv;
archflag_cpusubtype =
CPU_SUBTYPE_MC68040;
}
else if(strcmp(*work_argv, "m68k") != 0)
as_fatal("I expected 'm68k', "
"'m68030' or 'm68040' after "
"-arch for this assembler.");
#endif
#ifdef M88K
if(strcmp(*work_argv, "m88k") != 0)
as_fatal("I expected 'm88k' after "
"-arch for this assembler.");
#endif
#if defined(PPC) && !defined(ARCH64)
if(strcmp(*work_argv, "ppc601") == 0){
if(archflag_cpusubtype != -1 &&
archflag_cpusubtype !=
CPU_SUBTYPE_POWERPC_601)
as_fatal("can't specify more "
"than one -arch flag ");
specific_archflag = *work_argv;
archflag_cpusubtype =
CPU_SUBTYPE_POWERPC_601;
}
else if(strcmp(*work_argv,
"ppc603") == 0){
if(archflag_cpusubtype != -1 &&
archflag_cpusubtype !=
CPU_SUBTYPE_POWERPC_603)
as_fatal("can't specify more "
"than one -arch flag ");
specific_archflag = *work_argv;
archflag_cpusubtype =
CPU_SUBTYPE_POWERPC_603;
}
else if(strcmp(*work_argv,
"ppc603e") == 0){
if(archflag_cpusubtype != -1 &&
archflag_cpusubtype !=
CPU_SUBTYPE_POWERPC_603e)
as_fatal("can't specify more "
"than one -arch flag ");
specific_archflag = *work_argv;
archflag_cpusubtype =
CPU_SUBTYPE_POWERPC_603e;
}
else if(strcmp(*work_argv,
"ppc603ev") == 0){
if(archflag_cpusubtype != -1 &&
archflag_cpusubtype !=
CPU_SUBTYPE_POWERPC_603ev)
as_fatal("can't specify more "
"than one -arch flag ");
specific_archflag = *work_argv;
archflag_cpusubtype =
CPU_SUBTYPE_POWERPC_603ev;
}
else if(strcmp(*work_argv,
"ppc604") == 0){
if(archflag_cpusubtype != -1 &&
archflag_cpusubtype !=
CPU_SUBTYPE_POWERPC_604)
as_fatal("can't specify more "
"than one -arch flag ");
specific_archflag = *work_argv;
archflag_cpusubtype =
CPU_SUBTYPE_POWERPC_604;
}
else if(strcmp(*work_argv,
"ppc604e") == 0){
if(archflag_cpusubtype != -1 &&
archflag_cpusubtype !=
CPU_SUBTYPE_POWERPC_604e)
as_fatal("can't specify more "
"than one -arch flag ");
specific_archflag = *work_argv;
archflag_cpusubtype =
CPU_SUBTYPE_POWERPC_604e;
}
else if(strcmp(*work_argv,
"ppc750") == 0){
if(archflag_cpusubtype != -1 &&
archflag_cpusubtype !=
CPU_SUBTYPE_POWERPC_750)
as_fatal("can't specify more "
"than one -arch flag ");
specific_archflag = *work_argv;
archflag_cpusubtype =
CPU_SUBTYPE_POWERPC_750;
}
else if(strcmp(*work_argv,
"ppc7400") == 0){
if(archflag_cpusubtype != -1 &&
archflag_cpusubtype !=
CPU_SUBTYPE_POWERPC_7400)
as_fatal("can't specify more "
"than one -arch flag ");
specific_archflag = *work_argv;
archflag_cpusubtype =
CPU_SUBTYPE_POWERPC_7400;
}
else if(strcmp(*work_argv,
"ppc7450") == 0){
if(archflag_cpusubtype != -1 &&
archflag_cpusubtype !=
CPU_SUBTYPE_POWERPC_7450)
as_fatal("can't specify more "
"than one -arch flag ");
specific_archflag = *work_argv;
archflag_cpusubtype =
CPU_SUBTYPE_POWERPC_7450;
}
else if(strcmp(*work_argv,
"ppc970") == 0){
if(archflag_cpusubtype != -1 &&
archflag_cpusubtype !=
CPU_SUBTYPE_POWERPC_970)
as_fatal("can't specify more "
"than one -arch flag ");
specific_archflag = *work_argv;
archflag_cpusubtype =
CPU_SUBTYPE_POWERPC_970;
}
else if(strcmp(*work_argv, "ppc") != 0 &&
strcmp(*work_argv, "m98k") != 0)
as_fatal("I expected 'ppc' after "
"-arch for this assembler.");
#endif /* defined(PPC) && !defined(ARCH64) */
#if defined(PPC) && defined(ARCH64)
if(strcmp(*work_argv,
"ppc970-64") == 0){
if(archflag_cpusubtype != -1 &&
archflag_cpusubtype !=
CPU_SUBTYPE_POWERPC_970)
as_fatal("can't specify more "
"than one -arch flag ");
specific_archflag = *work_argv;
archflag_cpusubtype =
CPU_SUBTYPE_POWERPC_970;
}
else
#endif
#if defined(PPC) && defined(ARCH64)
if(strcmp(*work_argv, "ppc64") != 0)
as_fatal("I expected 'ppc64' after "
"-arch for this assembler.");
#endif
#ifdef I860
if(strcmp(*work_argv, "i860") != 0)
as_fatal("I expected 'i860' after "
"-arch for this assembler.");
#endif
#if defined(I386) && !defined(ARCH64)
if(strcmp(*work_argv, "i486") == 0){
if(archflag_cpusubtype != -1 &&
archflag_cpusubtype !=
CPU_SUBTYPE_486)
as_fatal("can't specify more "
"than one -arch flag ");
specific_archflag = *work_argv;
archflag_cpusubtype =
CPU_SUBTYPE_486;
}
else if(strcmp(*work_argv,
"i486SX") == 0){
if(archflag_cpusubtype != -1 &&
archflag_cpusubtype !=
CPU_SUBTYPE_486SX)
as_fatal("can't specify more "
"than one -arch flag ");
specific_archflag = *work_argv;
archflag_cpusubtype =
CPU_SUBTYPE_486SX;
}
else if(strcmp(*work_argv, "i586") ==0){
if(archflag_cpusubtype != -1 &&
archflag_cpusubtype !=
CPU_SUBTYPE_586)
as_fatal("can't specify more "
"than one -arch flag ");
specific_archflag = *work_argv;
archflag_cpusubtype =
CPU_SUBTYPE_586;
}
else if(strcmp(*work_argv, "pentium") ==0){
if(archflag_cpusubtype != -1 &&
archflag_cpusubtype !=
CPU_SUBTYPE_PENT)
as_fatal("can't specify more "
"than one -arch flag ");
specific_archflag = *work_argv;
archflag_cpusubtype =
CPU_SUBTYPE_PENT;
}
else if(strcmp(*work_argv, "pentpro") ==0){
if(archflag_cpusubtype != -1 &&
archflag_cpusubtype !=
CPU_SUBTYPE_PENTPRO)
as_fatal("can't specify more "
"than one -arch flag ");
specific_archflag = *work_argv;
archflag_cpusubtype =
CPU_SUBTYPE_PENTPRO;
}
else if(strcmp(*work_argv, "i686") ==0){
if(archflag_cpusubtype != -1 &&
archflag_cpusubtype !=
CPU_SUBTYPE_PENTPRO)
as_fatal("can't specify more "
"than one -arch flag ");
specific_archflag = *work_argv;
archflag_cpusubtype =
CPU_SUBTYPE_PENTPRO;
}
else if(strcmp(*work_argv, "pentIIm3") ==0){
if(archflag_cpusubtype != -1 &&
archflag_cpusubtype !=
CPU_SUBTYPE_PENTII_M3)
as_fatal("can't specify more "
"than one -arch flag ");
specific_archflag = *work_argv;
archflag_cpusubtype =
CPU_SUBTYPE_PENTII_M3;
}
else if(strcmp(*work_argv, "pentIIm5") ==0){
if(archflag_cpusubtype != -1 &&
archflag_cpusubtype !=
CPU_SUBTYPE_PENTII_M5)
as_fatal("can't specify more "
"than one -arch flag ");
specific_archflag = *work_argv;
archflag_cpusubtype =
CPU_SUBTYPE_PENTII_M5;
}
else if(strcmp(*work_argv, "pentium4") ==0){
if(archflag_cpusubtype != -1 &&
archflag_cpusubtype !=
CPU_SUBTYPE_PENTIUM_4)
as_fatal("can't specify more "
"than one -arch flag ");
specific_archflag = *work_argv;
archflag_cpusubtype =
CPU_SUBTYPE_PENTIUM_4;
}
else if(strcmp(*work_argv, "i386") != 0)
as_fatal("I expected 'i386', 'i486', 'i486SX', "
"'i586', 'pentium', 'i686', 'pentpro', "
"'pentIIm3', or 'pentIIm5' after -arch "
"for this assembler.");
#endif
#if defined(I386) && defined(ARCH64)
if(strcmp(*work_argv, "x86_64") != 0)
as_fatal("I expected 'x86_64' after "
"-arch for this assembler.");
#endif
#ifdef HPPA
if(strcmp(*work_argv, "hppa") != 0)
as_fatal("I expected 'hppa' after "
"-arch for this assembler.");
#endif
#ifdef SPARC
if(strcmp(*work_argv, "sparc") != 0)
as_fatal("I expected 'sparc' after "
"-arch for this assembler.");
#endif
}
else
as_fatal("I expected an <arch_type> "
"after -arch.");
break;
}
/* fall through for non -arch flag */
default:
unknown_flag:
--arg;
if(md_parse_option(&arg, &work_argc, &work_argv) == 0)
as_warn("%s: I don't understand '%c' flag!", progname,
a);
if(arg && *arg)
arg++;
break;
}
}
/*
* We have just processed a "-..." arg, which was not a
* file-name. Smash it so the
* things that look for filenames won't ever see it.
*
* Whatever work_argv points to, it has already been used
* as part of a flag, so DON'T re-use it as a filename.
*/
*work_argv = NULL; /* NULL means 'not a file-name' */
}
if(flagseen['g'] == TRUE && flagseen['n'] == TRUE)
as_fatal("-g can't be specified if -n is specified");
/*
* If we haven't seen a -force_cpusubtype_ALL or an -arch flag for a
* specific architecture then let the machine instructions in the
* assembly determine the cpusubtype of the output file.
*/
if(force_cpusubtype_ALL_for_cputype(md_cputype) == TRUE)
force_cpusubtype_ALL = TRUE;
if(force_cpusubtype_ALL && specific_archflag)
archflag_cpusubtype = -1;
/*
* Test to see if the AS_SECURE_LOG_FILE environment
* variable is set and save the value.
*/
secure_log_file = getenv("AS_SECURE_LOG_FILE");
/*
* Call the initialization routines.
*/
#ifdef OLD_PROJECTBUILDER_INTERFACE
check_for_ProjectBuilder(); /* messages.c */
#endif /* OLD_PROJECTBUILDER_INTERFACE */
symbol_begin(); /* symbols.c */
sections_begin(); /* sections.c */
read_begin(); /* read.c */
#ifdef PPC
if(flagseen[(int)'p'] == TRUE)
ppcasm_read_begin(); /* read.c */
#endif /* PPC */
md_begin(); /* MACHINE.c */
input_scrub_begin(); /* input_scrub.c */
/* Here with flags set up in flagseen[]. */
perform_an_assembly_pass(argc, argv); /* Assemble it. */
if(seen_at_least_1_file() && bad_error != TRUE){
layout_addresses();
write_object(out_file_name);
}
input_scrub_end();
md_end(); /* MACHINE.c */
return(bad_error); /* WIN */
}