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authorYamaArashi <shadow962@live.com>2016-01-06 01:47:28 -0800
committerYamaArashi <shadow962@live.com>2016-01-06 01:47:28 -0800
commitbe8b04496302184c6e8f04d6179f9c3afc50aeb6 (patch)
tree726e2468c0c07add773c0dbd86ab6386844259ae /gcc/collect2.c
initial commit
Diffstat (limited to 'gcc/collect2.c')
-rwxr-xr-xgcc/collect2.c3742
1 files changed, 3742 insertions, 0 deletions
diff --git a/gcc/collect2.c b/gcc/collect2.c
new file mode 100755
index 0000000..7060c2e
--- /dev/null
+++ b/gcc/collect2.c
@@ -0,0 +1,3742 @@
+/* Collect static initialization info into data structures that can be
+ traversed by C++ initialization and finalization routines.
+ Copyright (C) 1992, 93-97, 1998 Free Software Foundation, Inc.
+ Contributed by Chris Smith (csmith@convex.com).
+ Heavily modified by Michael Meissner (meissner@cygnus.com),
+ Per Bothner (bothner@cygnus.com), and John Gilmore (gnu@cygnus.com).
+
+This file is part of GNU CC.
+
+GNU CC is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU CC is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU CC; see the file COPYING. If not, write to
+the Free Software Foundation, 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA. */
+
+
+/* Build tables of static constructors and destructors and run ld. */
+
+#include "config.h"
+#include "system.h"
+#include <signal.h>
+
+#ifdef vfork /* Autoconf may define this to fork for us. */
+# define VFORK_STRING "fork"
+#else
+# define VFORK_STRING "vfork"
+#endif
+#ifdef HAVE_VFORK_H
+#include <vfork.h>
+#endif
+#ifdef VMS
+#define vfork() (decc$$alloc_vfork_blocks() >= 0 ? \
+ lib$get_current_invo_context(decc$$get_vfork_jmpbuf()) : -1)
+#endif /* VMS */
+
+#define COLLECT
+
+#include "collect2.h"
+#include "demangle.h"
+#include "obstack.h"
+#ifdef __CYGWIN__
+#include <process.h>
+#endif
+
+/* Obstack allocation and deallocation routines. */
+#define obstack_chunk_alloc xmalloc
+#define obstack_chunk_free free
+
+extern char *make_temp_file PROTO ((char *));
+
+/* On certain systems, we have code that works by scanning the object file
+ directly. But this code uses system-specific header files and library
+ functions, so turn it off in a cross-compiler. Likewise, the names of
+ the utilities are not correct for a cross-compiler; we have to hope that
+ cross-versions are in the proper directories. */
+
+#ifdef CROSS_COMPILE
+#undef SUNOS4_SHARED_LIBRARIES
+#undef OBJECT_FORMAT_COFF
+#undef OBJECT_FORMAT_ROSE
+#undef MD_EXEC_PREFIX
+#undef REAL_LD_FILE_NAME
+#undef REAL_NM_FILE_NAME
+#undef REAL_STRIP_FILE_NAME
+#endif
+
+/* If we cannot use a special method, use the ordinary one:
+ run nm to find what symbols are present.
+ In a cross-compiler, this means you need a cross nm,
+ but that is not quite as unpleasant as special headers. */
+
+#if !defined (OBJECT_FORMAT_COFF) && !defined (OBJECT_FORMAT_ROSE)
+#define OBJECT_FORMAT_NONE
+#endif
+
+#ifdef OBJECT_FORMAT_COFF
+
+#include <a.out.h>
+#include <ar.h>
+
+#ifdef UMAX
+#include <sgs.h>
+#endif
+
+/* Many versions of ldfcn.h define these. */
+#ifdef FREAD
+#undef FREAD
+#undef FWRITE
+#endif
+
+#include <ldfcn.h>
+
+/* Some systems have an ISCOFF macro, but others do not. In some cases
+ the macro may be wrong. MY_ISCOFF is defined in tm.h files for machines
+ that either do not have an ISCOFF macro in /usr/include or for those
+ where it is wrong. */
+
+#ifndef MY_ISCOFF
+#define MY_ISCOFF(X) ISCOFF (X)
+#endif
+
+#endif /* OBJECT_FORMAT_COFF */
+
+#ifdef OBJECT_FORMAT_ROSE
+
+#ifdef _OSF_SOURCE
+#define USE_MMAP
+#endif
+
+#ifdef USE_MMAP
+#include <sys/mman.h>
+#endif
+
+#include <unistd.h>
+#include <mach_o_format.h>
+#include <mach_o_header.h>
+#include <mach_o_vals.h>
+#include <mach_o_types.h>
+
+#endif /* OBJECT_FORMAT_ROSE */
+
+#ifdef OBJECT_FORMAT_NONE
+
+/* Default flags to pass to nm. */
+#ifndef NM_FLAGS
+#define NM_FLAGS "-n"
+#endif
+
+#endif /* OBJECT_FORMAT_NONE */
+
+/* Some systems use __main in a way incompatible with its use in gcc, in these
+ cases use the macros NAME__MAIN to give a quoted symbol and SYMBOL__MAIN to
+ give the same symbol without quotes for an alternative entry point. You
+ must define both, or neither. */
+#ifndef NAME__MAIN
+#define NAME__MAIN "__main"
+#define SYMBOL__MAIN __main
+#endif
+
+/* This must match tree.h. */
+#define DEFAULT_INIT_PRIORITY 65535
+
+#if defined (LDD_SUFFIX) || SUNOS4_SHARED_LIBRARIES
+#define SCAN_LIBRARIES
+#endif
+
+#ifdef USE_COLLECT2
+int do_collecting = 1;
+#else
+int do_collecting = 0;
+#endif
+
+/* Linked lists of constructor and destructor names. */
+
+struct id
+{
+ struct id *next;
+ int sequence;
+ char name[1];
+};
+
+struct head
+{
+ struct id *first;
+ struct id *last;
+ int number;
+};
+
+/* Enumeration giving which pass this is for scanning the program file. */
+
+enum pass {
+ PASS_FIRST, /* without constructors */
+ PASS_OBJ, /* individual objects */
+ PASS_LIB, /* looking for shared libraries */
+ PASS_SECOND /* with constructors linked in */
+};
+
+extern char *version_string;
+
+int vflag; /* true if -v */
+static int rflag; /* true if -r */
+static int strip_flag; /* true if -s */
+#ifdef COLLECT_EXPORT_LIST
+static int export_flag; /* true if -bE */
+static int aix64_flag; /* true if -b64 */
+#endif
+
+int debug; /* true if -debug */
+
+static int shared_obj; /* true if -shared */
+
+static char *c_file; /* <xxx>.c for constructor/destructor list. */
+static char *o_file; /* <xxx>.o for constructor/destructor list. */
+#ifdef COLLECT_EXPORT_LIST
+static char *export_file; /* <xxx>.x for AIX export list. */
+static char *import_file; /* <xxx>.p for AIX import list. */
+#endif
+char *ldout; /* File for ld errors. */
+static char *output_file; /* Output file for ld. */
+static char *nm_file_name; /* pathname of nm */
+#ifdef LDD_SUFFIX
+static char *ldd_file_name; /* pathname of ldd (or equivalent) */
+#endif
+static char *strip_file_name; /* pathname of strip */
+char *c_file_name; /* pathname of gcc */
+static char *initname, *fininame; /* names of init and fini funcs */
+
+static struct head constructors; /* list of constructors found */
+static struct head destructors; /* list of destructors found */
+#ifdef COLLECT_EXPORT_LIST
+static struct head exports; /* list of exported symbols */
+static struct head imports; /* list of imported symbols */
+static struct head undefined; /* list of undefined symbols */
+#endif
+static struct head frame_tables; /* list of frame unwind info tables */
+
+struct obstack temporary_obstack;
+struct obstack permanent_obstack;
+char * temporary_firstobj;
+
+/* Defined in the automatically-generated underscore.c. */
+extern int prepends_underscore;
+
+extern FILE *fdopen ();
+
+#ifndef GET_ENV_PATH_LIST
+#define GET_ENV_PATH_LIST(VAR,NAME) do { (VAR) = getenv (NAME); } while (0)
+#endif
+
+/* Structure to hold all the directories in which to search for files to
+ execute. */
+
+struct prefix_list
+{
+ char *prefix; /* String to prepend to the path. */
+ struct prefix_list *next; /* Next in linked list. */
+};
+
+struct path_prefix
+{
+ struct prefix_list *plist; /* List of prefixes to try */
+ int max_len; /* Max length of a prefix in PLIST */
+ char *name; /* Name of this list (used in config stuff) */
+};
+
+#ifdef COLLECT_EXPORT_LIST
+/* Lists to keep libraries to be scanned for global constructors/destructors. */
+static struct head libs; /* list of libraries */
+static struct path_prefix cmdline_lib_dirs; /* directories specified with -L */
+static struct path_prefix libpath_lib_dirs; /* directories in LIBPATH */
+static struct path_prefix *libpaths[3] = {&cmdline_lib_dirs,
+ &libpath_lib_dirs, NULL};
+static char *libexts[3] = {"a", "so", NULL}; /* possible library extentions */
+#endif
+
+void error PVPROTO((const char *, ...)) ATTRIBUTE_PRINTF_1;
+void fatal PVPROTO((const char *, ...))
+ ATTRIBUTE_PRINTF_1 ATTRIBUTE_NORETURN;
+void fatal_perror PVPROTO((const char *, ...))
+ ATTRIBUTE_PRINTF_1 ATTRIBUTE_NORETURN;
+static char *my_strerror PROTO((int));
+static const char *my_strsignal PROTO((int));
+static void handler PROTO((int));
+static int is_ctor_dtor PROTO((char *));
+static char *find_a_file PROTO((struct path_prefix *, char *));
+static void add_prefix PROTO((struct path_prefix *, char *));
+static void prefix_from_env PROTO((char *, struct path_prefix *));
+static void prefix_from_string PROTO((char *, struct path_prefix *));
+static void do_wait PROTO((char *));
+static void fork_execute PROTO((char *, char **));
+static void maybe_unlink PROTO((char *));
+static void add_to_list PROTO((struct head *, char *));
+static int extract_init_priority PROTO((char *));
+static void sort_ids PROTO((struct head *));
+static void write_list PROTO((FILE *, char *, struct id *));
+#ifdef COLLECT_EXPORT_LIST
+static void dump_list PROTO((FILE *, char *, struct id *));
+#endif
+#if 0
+static void dump_prefix_list PROTO((FILE *, char *, struct prefix_list *));
+#endif
+static void write_list_with_asm PROTO((FILE *, char *, struct id *));
+static void write_c_file PROTO((FILE *, char *));
+static void scan_prog_file PROTO((char *, enum pass));
+#ifdef SCAN_LIBRARIES
+static void scan_libraries PROTO((char *));
+#endif
+#ifdef COLLECT_EXPORT_LIST
+static int is_in_list PROTO((char *, struct id *));
+static void write_export_file PROTO((FILE *));
+static void write_import_file PROTO((FILE *));
+static char *resolve_lib_name PROTO((char *));
+static int use_import_list PROTO((char *));
+static int ignore_library PROTO((char *));
+#endif
+
+#ifdef NO_DUP2
+int
+dup2 (oldfd, newfd)
+ int oldfd;
+ int newfd;
+{
+ int fdtmp[256];
+ int fdx = 0;
+ int fd;
+
+ if (oldfd == newfd)
+ return oldfd;
+ close (newfd);
+ while ((fd = dup (oldfd)) != newfd && fd >= 0) /* good enough for low fd's */
+ fdtmp[fdx++] = fd;
+ while (fdx > 0)
+ close (fdtmp[--fdx]);
+
+ return fd;
+}
+#endif
+
+static char *
+my_strerror (e)
+ int e;
+{
+
+#ifdef HAVE_STRERROR
+ return strerror (e);
+
+#else
+
+ static char buffer[30];
+ if (!e)
+ return "";
+
+ if (e > 0 && e < sys_nerr)
+ return sys_errlist[e];
+
+ sprintf (buffer, "Unknown error %d", e);
+ return buffer;
+#endif
+}
+
+static const char *
+my_strsignal (s)
+ int s;
+{
+#ifdef HAVE_STRSIGNAL
+ return strsignal (s);
+#else
+ if (s >= 0 && s < NSIG)
+ {
+# ifdef NO_SYS_SIGLIST
+ static char buffer[30];
+
+ sprintf (buffer, "Unknown signal %d", s);
+ return buffer;
+# else
+ return sys_siglist[s];
+# endif
+ }
+ else
+ return NULL;
+#endif /* HAVE_STRSIGNAL */
+}
+
+/* Delete tempfiles and exit function. */
+
+void
+collect_exit (status)
+ int status;
+{
+ if (c_file != 0 && c_file[0])
+ maybe_unlink (c_file);
+
+ if (o_file != 0 && o_file[0])
+ maybe_unlink (o_file);
+
+#ifdef COLLECT_EXPORT_LIST
+ if (export_file != 0 && export_file[0])
+ maybe_unlink (export_file);
+
+ if (import_file != 0 && import_file[0])
+ maybe_unlink (import_file);
+#endif
+
+ if (ldout != 0 && ldout[0])
+ {
+ dump_file (ldout);
+ maybe_unlink (ldout);
+ }
+
+ if (status != 0 && output_file != 0 && output_file[0])
+ maybe_unlink (output_file);
+
+ exit (status);
+}
+
+
+/* Die when sys call fails. */
+
+void
+fatal_perror VPROTO((const char * string, ...))
+{
+#ifndef ANSI_PROTOTYPES
+ const char *string;
+#endif
+ int e = errno;
+ va_list ap;
+
+ VA_START (ap, string);
+
+#ifndef ANSI_PROTOTYPES
+ string = va_arg (ap, const char *);
+#endif
+
+ fprintf (stderr, "collect2: ");
+ vfprintf (stderr, string, ap);
+ fprintf (stderr, ": %s\n", my_strerror (e));
+ va_end (ap);
+
+ collect_exit (FATAL_EXIT_CODE);
+}
+
+/* Just die. */
+
+void
+fatal VPROTO((const char * string, ...))
+{
+#ifndef ANSI_PROTOTYPES
+ const char *string;
+#endif
+ va_list ap;
+
+ VA_START (ap, string);
+
+#ifndef ANSI_PROTOTYPES
+ string = va_arg (ap, const char *);
+#endif
+
+ fprintf (stderr, "collect2: ");
+ vfprintf (stderr, string, ap);
+ fprintf (stderr, "\n");
+ va_end (ap);
+
+ collect_exit (FATAL_EXIT_CODE);
+}
+
+/* Write error message. */
+
+void
+error VPROTO((const char * string, ...))
+{
+#ifndef ANSI_PROTOTYPES
+ const char * string;
+#endif
+ va_list ap;
+
+ VA_START (ap, string);
+
+#ifndef ANSI_PROTOTYPES
+ string = va_arg (ap, const char *);
+#endif
+
+ fprintf (stderr, "collect2: ");
+ vfprintf (stderr, string, ap);
+ fprintf (stderr, "\n");
+ va_end(ap);
+}
+
+/* In case obstack is linked in, and abort is defined to fancy_abort,
+ provide a default entry. */
+
+void
+fancy_abort ()
+{
+ fatal ("internal error");
+}
+
+
+static void
+handler (signo)
+ int signo;
+{
+ if (c_file != 0 && c_file[0])
+ maybe_unlink (c_file);
+
+ if (o_file != 0 && o_file[0])
+ maybe_unlink (o_file);
+
+ if (ldout != 0 && ldout[0])
+ maybe_unlink (ldout);
+
+#ifdef COLLECT_EXPORT_LIST
+ if (export_file != 0 && export_file[0])
+ maybe_unlink (export_file);
+
+ if (import_file != 0 && import_file[0])
+ maybe_unlink (import_file);
+#endif
+
+ signal (signo, SIG_DFL);
+ kill (getpid (), signo);
+}
+
+
+PTR
+xcalloc (size1, size2)
+ size_t size1, size2;
+{
+ PTR ptr = (PTR) calloc (size1, size2);
+ if (!ptr)
+ fatal ("out of memory");
+ return ptr;
+}
+
+PTR
+xmalloc (size)
+ size_t size;
+{
+ PTR ptr = (PTR) malloc (size);
+ if (!ptr)
+ fatal ("out of memory");
+ return ptr;
+}
+
+PTR
+xrealloc (old, size)
+ PTR old;
+ size_t size;
+{
+ register PTR ptr;
+ if (ptr)
+ ptr = (PTR) realloc (old, size);
+ else
+ ptr = (PTR) malloc (size);
+ if (ptr == 0)
+ fatal ("virtual memory exhausted");
+ return ptr;
+}
+
+int
+file_exists (name)
+ char *name;
+{
+ return access (name, R_OK) == 0;
+}
+
+/* Make a copy of a string INPUT with size SIZE. */
+
+char *
+savestring (input, size)
+ char *input;
+ int size;
+{
+ char *output = (char *) xmalloc (size + 1);
+ bcopy (input, output, size);
+ output[size] = 0;
+ return output;
+}
+
+/* Parse a reasonable subset of shell quoting syntax. */
+
+static char *
+extract_string (pp)
+ char **pp;
+{
+ char *p = *pp;
+ int backquote = 0;
+ int inside = 0;
+
+ for (;;)
+ {
+ char c = *p;
+ if (c == '\0')
+ break;
+ ++p;
+ if (backquote)
+ obstack_1grow (&temporary_obstack, c);
+ else if (! inside && c == ' ')
+ break;
+ else if (! inside && c == '\\')
+ backquote = 1;
+ else if (c == '\'')
+ inside = !inside;
+ else
+ obstack_1grow (&temporary_obstack, c);
+ }
+
+ obstack_1grow (&temporary_obstack, '\0');
+ *pp = p;
+ return obstack_finish (&temporary_obstack);
+}
+
+void
+dump_file (name)
+ char *name;
+{
+ FILE *stream = fopen (name, "r");
+ int no_demangle = !! getenv ("COLLECT_NO_DEMANGLE");
+
+ if (stream == 0)
+ return;
+ while (1)
+ {
+ int c;
+ while (c = getc (stream),
+ c != EOF && (ISALNUM (c) || c == '_' || c == '$' || c == '.'))
+ obstack_1grow (&temporary_obstack, c);
+ if (obstack_object_size (&temporary_obstack) > 0)
+ {
+ char *word, *p, *result;
+ obstack_1grow (&temporary_obstack, '\0');
+ word = obstack_finish (&temporary_obstack);
+
+ if (*word == '.')
+ ++word, putc ('.', stderr);
+ p = word;
+ if (*p == '_' && prepends_underscore)
+ ++p;
+
+ if (no_demangle)
+ result = 0;
+ else
+ result = cplus_demangle (p, DMGL_PARAMS | DMGL_ANSI);
+
+ if (result)
+ {
+ int diff;
+ fputs (result, stderr);
+
+ diff = strlen (word) - strlen (result);
+ while (diff > 0)
+ --diff, putc (' ', stderr);
+ while (diff < 0 && c == ' ')
+ ++diff, c = getc (stream);
+
+ free (result);
+ }
+ else
+ fputs (word, stderr);
+
+ fflush (stderr);
+ obstack_free (&temporary_obstack, temporary_firstobj);
+ }
+ if (c == EOF)
+ break;
+ putc (c, stderr);
+ }
+ fclose (stream);
+}
+
+/* Decide whether the given symbol is:
+ a constructor (1), a destructor (2), or neither (0). */
+
+static int
+is_ctor_dtor (s)
+ char *s;
+{
+ struct names { char *name; int len; int ret; int two_underscores; };
+
+ register struct names *p;
+ register int ch;
+ register char *orig_s = s;
+
+ static struct names special[] = {
+#ifdef NO_DOLLAR_IN_LABEL
+#ifdef NO_DOT_IN_LABEL
+ { "GLOBAL__I_", sizeof ("GLOBAL__I_")-1, 1, 0 },
+ { "GLOBAL__D_", sizeof ("GLOBAL__D_")-1, 2, 0 },
+ { "GLOBAL__F_", sizeof ("GLOBAL__F_")-1, 5, 0 },
+#else
+ { "GLOBAL_.I.", sizeof ("GLOBAL_.I.")-1, 1, 0 },
+ { "GLOBAL_.D.", sizeof ("GLOBAL_.D.")-1, 2, 0 },
+ { "GLOBAL_.F.", sizeof ("GLOBAL_.F.")-1, 5, 0 },
+#endif
+#else
+ { "GLOBAL_$I$", sizeof ("GLOBAL_$I$")-1, 1, 0 },
+ { "GLOBAL_$D$", sizeof ("GLOBAL_$D$")-1, 2, 0 },
+ { "GLOBAL_$F$", sizeof ("GLOBAL_$F$")-1, 5, 0 },
+#endif
+ { "GLOBAL__FI_", sizeof ("GLOBAL__FI_")-1, 3, 0 },
+ { "GLOBAL__FD_", sizeof ("GLOBAL__FD_")-1, 4, 0 },
+#ifdef CFRONT_LOSSAGE /* Do not collect cfront initialization functions.
+ cfront has its own linker procedure to collect them;
+ if collect2 gets them too, they get collected twice
+ when the cfront procedure is run and the compiler used
+ for linking happens to be GCC. */
+ { "sti__", sizeof ("sti__")-1, 1, 1 },
+ { "std__", sizeof ("std__")-1, 2, 1 },
+#endif /* CFRONT_LOSSAGE */
+ { NULL, 0, 0, 0 }
+ };
+
+ while ((ch = *s) == '_')
+ ++s;
+
+ if (s == orig_s)
+ return 0;
+
+ for (p = &special[0]; p->len > 0; p++)
+ {
+ if (ch == p->name[0]
+ && (!p->two_underscores || ((s - orig_s) >= 2))
+ && strncmp(s, p->name, p->len) == 0)
+ {
+ return p->ret;
+ }
+ }
+ return 0;
+}
+
+/* Routine to add variables to the environment. */
+
+#ifndef HAVE_PUTENV
+
+int
+putenv (str)
+ char *str;
+{
+#ifndef VMS /* nor about VMS */
+
+ extern char **environ;
+ char **old_environ = environ;
+ char **envp;
+ int num_envs = 0;
+ int name_len = 1;
+ char *p = str;
+ int ch;
+
+ while ((ch = *p++) != '\0' && ch != '=')
+ name_len++;
+
+ if (!ch)
+ abort ();
+
+ /* Search for replacing an existing environment variable, and
+ count the number of total environment variables. */
+ for (envp = old_environ; *envp; envp++)
+ {
+ num_envs++;
+ if (!strncmp (str, *envp, name_len))
+ {
+ *envp = str;
+ return 0;
+ }
+ }
+
+ /* Add a new environment variable */
+ environ = (char **) xmalloc (sizeof (char *) * (num_envs+2));
+ *environ = str;
+ bcopy ((char *) old_environ, (char *) (environ + 1),
+ sizeof (char *) * (num_envs+1));
+
+ return 0;
+#endif /* VMS */
+}
+
+#endif /* HAVE_PUTENV */
+
+/* By default, colon separates directories in a path. */
+#ifndef PATH_SEPARATOR
+#define PATH_SEPARATOR ':'
+#endif
+
+/* We maintain two prefix lists: one from COMPILER_PATH environment variable
+ and one from the PATH variable. */
+
+static struct path_prefix cpath, path;
+
+#ifdef CROSS_COMPILE
+/* This is the name of the target machine. We use it to form the name
+ of the files to execute. */
+
+static char *target_machine = TARGET_MACHINE;
+#endif
+
+/* Search for NAME using prefix list PPREFIX. We only look for executable
+ files.
+
+ Return 0 if not found, otherwise return its name, allocated with malloc. */
+
+static char *
+find_a_file (pprefix, name)
+ struct path_prefix *pprefix;
+ char *name;
+{
+ char *temp;
+ struct prefix_list *pl;
+ int len = pprefix->max_len + strlen (name) + 1;
+
+ if (debug)
+ fprintf (stderr, "Looking for '%s'\n", name);
+
+#ifdef EXECUTABLE_SUFFIX
+ len += strlen (EXECUTABLE_SUFFIX);
+#endif
+
+ temp = xmalloc (len);
+
+ /* Determine the filename to execute (special case for absolute paths). */
+
+ if (*name == '/'
+#ifdef DIR_SEPARATOR
+ || (DIR_SEPARATOR == '\\' && name[1] == ':'
+ && (name[2] == DIR_SEPARATOR || name[2] == '/'))
+#endif
+ )
+ {
+ if (access (name, X_OK) == 0)
+ {
+ strcpy (temp, name);
+
+ if (debug)
+ fprintf (stderr, " - found: absolute path\n");
+
+ return temp;
+ }
+
+ if (debug)
+ fprintf (stderr, " - failed to locate using absolute path\n");
+ }
+ else
+ for (pl = pprefix->plist; pl; pl = pl->next)
+ {
+ strcpy (temp, pl->prefix);
+ strcat (temp, name);
+
+ if (access (temp, X_OK) == 0)
+ return temp;
+
+#ifdef EXECUTABLE_SUFFIX
+ /* Some systems have a suffix for executable files.
+ So try appending that. */
+ strcat (temp, EXECUTABLE_SUFFIX);
+
+ if (access (temp, X_OK) == 0)
+ return temp;
+#endif
+ }
+
+ if (debug && pprefix->plist == NULL)
+ fprintf (stderr, " - failed: no entries in prefix list\n");
+
+ free (temp);
+ return 0;
+}
+
+/* Add an entry for PREFIX to prefix list PPREFIX. */
+
+static void
+add_prefix (pprefix, prefix)
+ struct path_prefix *pprefix;
+ char *prefix;
+{
+ struct prefix_list *pl, **prev;
+ int len;
+
+ if (pprefix->plist)
+ {
+ for (pl = pprefix->plist; pl->next; pl = pl->next)
+ ;
+ prev = &pl->next;
+ }
+ else
+ prev = &pprefix->plist;
+
+ /* Keep track of the longest prefix */
+
+ len = strlen (prefix);
+ if (len > pprefix->max_len)
+ pprefix->max_len = len;
+
+ pl = (struct prefix_list *) xmalloc (sizeof (struct prefix_list));
+ pl->prefix = savestring (prefix, len);
+
+ if (*prev)
+ pl->next = *prev;
+ else
+ pl->next = (struct prefix_list *) 0;
+ *prev = pl;
+}
+
+/* Take the value of the environment variable ENV, break it into a path, and
+ add of the entries to PPREFIX. */
+
+static void
+prefix_from_env (env, pprefix)
+ char *env;
+ struct path_prefix *pprefix;
+{
+ char *p;
+ GET_ENV_PATH_LIST (p, env);
+
+ if (p)
+ prefix_from_string (p, pprefix);
+}
+
+static void
+prefix_from_string (p, pprefix)
+ char *p;
+ struct path_prefix *pprefix;
+{
+ char *startp, *endp;
+ char *nstore = (char *) xmalloc (strlen (p) + 3);
+
+ if (debug)
+ fprintf (stderr, "Convert string '%s' into prefixes, separator = '%c'\n", p, PATH_SEPARATOR);
+
+ startp = endp = p;
+ while (1)
+ {
+ if (*endp == PATH_SEPARATOR || *endp == 0)
+ {
+ strncpy (nstore, startp, endp-startp);
+ if (endp == startp)
+ {
+ strcpy (nstore, "./");
+ }
+ else if (endp[-1] != '/')
+ {
+ nstore[endp-startp] = '/';
+ nstore[endp-startp+1] = 0;
+ }
+ else
+ nstore[endp-startp] = 0;
+
+ if (debug)
+ fprintf (stderr, " - add prefix: %s\n", nstore);
+
+ add_prefix (pprefix, nstore);
+ if (*endp == 0)
+ break;
+ endp = startp = endp + 1;
+ }
+ else
+ endp++;
+ }
+}
+
+/* Main program. */
+
+int
+main (argc, argv)
+ int argc;
+ char *argv[];
+{
+ char *ld_suffix = "ld";
+ char *full_ld_suffix = ld_suffix;
+ char *real_ld_suffix = "real-ld";
+ char *collect_ld_suffix = "collect-ld";
+ char *nm_suffix = "nm";
+ char *full_nm_suffix = nm_suffix;
+ char *gnm_suffix = "gnm";
+ char *full_gnm_suffix = gnm_suffix;
+#ifdef LDD_SUFFIX
+ char *ldd_suffix = LDD_SUFFIX;
+ char *full_ldd_suffix = ldd_suffix;
+#endif
+ char *strip_suffix = "strip";
+ char *full_strip_suffix = strip_suffix;
+ char *gstrip_suffix = "gstrip";
+ char *full_gstrip_suffix = gstrip_suffix;
+ char *arg;
+ FILE *outf;
+#ifdef COLLECT_EXPORT_LIST
+ FILE *exportf;
+ FILE *importf;
+#endif
+ char *ld_file_name;
+ char *p;
+ char **c_argv;
+ char **c_ptr;
+ char **ld1_argv = (char **) xcalloc (sizeof (char *), argc+3);
+ char **ld1 = ld1_argv;
+ char **ld2_argv = (char **) xcalloc (sizeof (char *), argc+6);
+ char **ld2 = ld2_argv;
+ char **object_lst = (char **) xcalloc (sizeof (char *), argc);
+ char **object = object_lst;
+ int first_file;
+ int num_c_args = argc+9;
+
+#ifdef DEBUG
+ debug = 1;
+#endif
+
+ /* Parse command line early for instances of -debug. This allows
+ the debug flag to be set before functions like find_a_file()
+ are called. */
+ {
+ int i;
+
+ for (i = 1; argv[i] != NULL; i ++)
+ if (! strcmp (argv[i], "-debug"))
+ debug = 1;
+ vflag = debug;
+ }
+
+#ifndef DEFAULT_A_OUT_NAME
+ output_file = "a.out";
+#else
+ output_file = DEFAULT_A_OUT_NAME;
+#endif
+
+ obstack_begin (&temporary_obstack, 0);
+ obstack_begin (&permanent_obstack, 0);
+ temporary_firstobj = (char *) obstack_alloc (&temporary_obstack, 0);
+
+ current_demangling_style = gnu_demangling;
+ p = getenv ("COLLECT_GCC_OPTIONS");
+ while (p && *p)
+ {
+ char *q = extract_string (&p);
+ if (*q == '-' && (q[1] == 'm' || q[1] == 'f'))
+ num_c_args++;
+ }
+ obstack_free (&temporary_obstack, temporary_firstobj);
+ ++num_c_args;
+
+ c_ptr = c_argv = (char **) xcalloc (sizeof (char *), num_c_args);
+
+ if (argc < 2)
+ fatal ("no arguments");
+
+#ifdef SIGQUIT
+ if (signal (SIGQUIT, SIG_IGN) != SIG_IGN)
+ signal (SIGQUIT, handler);
+#endif
+ if (signal (SIGINT, SIG_IGN) != SIG_IGN)
+ signal (SIGINT, handler);
+#ifdef SIGALRM
+ if (signal (SIGALRM, SIG_IGN) != SIG_IGN)
+ signal (SIGALRM, handler);
+#endif
+#ifdef SIGHUP
+ if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
+ signal (SIGHUP, handler);
+#endif
+ if (signal (SIGSEGV, SIG_IGN) != SIG_IGN)
+ signal (SIGSEGV, handler);
+#ifdef SIGBUS
+ if (signal (SIGBUS, SIG_IGN) != SIG_IGN)
+ signal (SIGBUS, handler);
+#endif
+
+ /* Extract COMPILER_PATH and PATH into our prefix list. */
+ prefix_from_env ("COMPILER_PATH", &cpath);
+ prefix_from_env ("PATH", &path);
+
+#ifdef CROSS_COMPILE
+ /* If we look for a program in the compiler directories, we just use
+ the short name, since these directories are already system-specific.
+ But it we look for a program in the system directories, we need to
+ qualify the program name with the target machine. */
+
+ full_ld_suffix
+ = xcalloc (strlen (ld_suffix) + strlen (target_machine) + 2, 1);
+ strcpy (full_ld_suffix, target_machine);
+ strcat (full_ld_suffix, "-");
+ strcat (full_ld_suffix, ld_suffix);
+
+#if 0
+ full_gld_suffix
+ = xcalloc (strlen (gld_suffix) + strlen (target_machine) + 2, 1);
+ strcpy (full_gld_suffix, target_machine);
+ strcat (full_gld_suffix, "-");
+ strcat (full_gld_suffix, gld_suffix);
+#endif
+
+ full_nm_suffix
+ = xcalloc (strlen (nm_suffix) + strlen (target_machine) + 2, 1);
+ strcpy (full_nm_suffix, target_machine);
+ strcat (full_nm_suffix, "-");
+ strcat (full_nm_suffix, nm_suffix);
+
+ full_gnm_suffix
+ = xcalloc (strlen (gnm_suffix) + strlen (target_machine) + 2, 1);
+ strcpy (full_gnm_suffix, target_machine);
+ strcat (full_gnm_suffix, "-");
+ strcat (full_gnm_suffix, gnm_suffix);
+
+#ifdef LDD_SUFFIX
+ full_ldd_suffix
+ = xcalloc (strlen (ldd_suffix) + strlen (target_machine) + 2, 1);
+ strcpy (full_ldd_suffix, target_machine);
+ strcat (full_ldd_suffix, "-");
+ strcat (full_ldd_suffix, ldd_suffix);
+#endif
+
+ full_strip_suffix
+ = xcalloc (strlen (strip_suffix) + strlen (target_machine) + 2, 1);
+ strcpy (full_strip_suffix, target_machine);
+ strcat (full_strip_suffix, "-");
+ strcat (full_strip_suffix, strip_suffix);
+
+ full_gstrip_suffix
+ = xcalloc (strlen (gstrip_suffix) + strlen (target_machine) + 2, 1);
+ strcpy (full_gstrip_suffix, target_machine);
+ strcat (full_gstrip_suffix, "-");
+ strcat (full_gstrip_suffix, gstrip_suffix);
+#endif /* CROSS_COMPILE */
+
+ /* Try to discover a valid linker/nm/strip to use. */
+
+ /* Maybe we know the right file to use (if not cross). */
+ ld_file_name = 0;
+#ifdef DEFAULT_LINKER
+ if (access (DEFAULT_LINKER, X_OK) == 0)
+ ld_file_name = DEFAULT_LINKER;
+ if (ld_file_name == 0)
+#endif
+#ifdef REAL_LD_FILE_NAME
+ ld_file_name = find_a_file (&path, REAL_LD_FILE_NAME);
+ if (ld_file_name == 0)
+#endif
+ /* Search the (target-specific) compiler dirs for ld'. */
+ ld_file_name = find_a_file (&cpath, real_ld_suffix);
+ /* Likewise for `collect-ld'. */
+ if (ld_file_name == 0)
+ ld_file_name = find_a_file (&cpath, collect_ld_suffix);
+ /* Search the compiler directories for `ld'. We have protection against
+ recursive calls in find_a_file. */
+ if (ld_file_name == 0)
+ ld_file_name = find_a_file (&cpath, ld_suffix);
+ /* Search the ordinary system bin directories
+ for `ld' (if native linking) or `TARGET-ld' (if cross). */
+ if (ld_file_name == 0)
+ ld_file_name = find_a_file (&path, full_ld_suffix);
+
+#ifdef REAL_NM_FILE_NAME
+ nm_file_name = find_a_file (&path, REAL_NM_FILE_NAME);
+ if (nm_file_name == 0)
+#endif
+ nm_file_name = find_a_file (&cpath, gnm_suffix);
+ if (nm_file_name == 0)
+ nm_file_name = find_a_file (&path, full_gnm_suffix);
+ if (nm_file_name == 0)
+ nm_file_name = find_a_file (&cpath, nm_suffix);
+ if (nm_file_name == 0)
+ nm_file_name = find_a_file (&path, full_nm_suffix);
+
+#ifdef LDD_SUFFIX
+ ldd_file_name = find_a_file (&cpath, ldd_suffix);
+ if (ldd_file_name == 0)
+ ldd_file_name = find_a_file (&path, full_ldd_suffix);
+#endif
+
+#ifdef REAL_STRIP_FILE_NAME
+ strip_file_name = find_a_file (&path, REAL_STRIP_FILE_NAME);
+ if (strip_file_name == 0)
+#endif
+ strip_file_name = find_a_file (&cpath, gstrip_suffix);
+ if (strip_file_name == 0)
+ strip_file_name = find_a_file (&path, full_gstrip_suffix);
+ if (strip_file_name == 0)
+ strip_file_name = find_a_file (&cpath, strip_suffix);
+ if (strip_file_name == 0)
+ strip_file_name = find_a_file (&path, full_strip_suffix);
+
+ /* Determine the full path name of the C compiler to use. */
+ c_file_name = getenv ("COLLECT_GCC");
+ if (c_file_name == 0)
+ {
+#ifdef CROSS_COMPILE
+ c_file_name = xcalloc (sizeof ("gcc-") + strlen (target_machine) + 1, 1);
+ strcpy (c_file_name, target_machine);
+ strcat (c_file_name, "-gcc");
+#else
+ c_file_name = "gcc";
+#endif
+ }
+
+ p = find_a_file (&cpath, c_file_name);
+
+ /* Here it should be safe to use the system search path since we should have
+ already qualified the name of the compiler when it is needed. */
+ if (p == 0)
+ p = find_a_file (&path, c_file_name);
+
+ if (p)
+ c_file_name = p;
+
+ *ld1++ = *ld2++ = ld_file_name;
+
+ /* Make temp file names. */
+ c_file = make_temp_file (".c");
+ o_file = make_temp_file (".o");
+#ifdef COLLECT_EXPORT_LIST
+ export_file = make_temp_file (".x");
+ import_file = make_temp_file (".p");
+#endif
+ ldout = make_temp_file (".ld");
+ *c_ptr++ = c_file_name;
+ *c_ptr++ = "-x";
+ *c_ptr++ = "c";
+ *c_ptr++ = "-c";
+ *c_ptr++ = "-o";
+ *c_ptr++ = o_file;
+
+#ifdef COLLECT_EXPORT_LIST
+ /* Generate a list of directories from LIBPATH. */
+ prefix_from_env ("LIBPATH", &libpath_lib_dirs);
+ /* Add to this list also two standard directories where
+ AIX loader always searches for libraries. */
+ add_prefix (&libpath_lib_dirs, "/lib");
+ add_prefix (&libpath_lib_dirs, "/usr/lib");
+#endif
+
+ /* Get any options that the upper GCC wants to pass to the sub-GCC.
+
+ AIX support needs to know if -shared has been specified before
+ parsing commandline arguments. */
+
+ p = getenv ("COLLECT_GCC_OPTIONS");
+ while (p && *p)
+ {
+ char *q = extract_string (&p);
+ if (*q == '-' && (q[1] == 'm' || q[1] == 'f'))
+ *c_ptr++ = obstack_copy0 (&permanent_obstack, q, strlen (q));
+ if (strcmp (q, "-EL") == 0 || strcmp (q, "-EB") == 0)
+ *c_ptr++ = obstack_copy0 (&permanent_obstack, q, strlen (q));
+ if (strncmp (q, "-shared", sizeof ("-shared") - 1) == 0)
+ shared_obj = 1;
+ }
+ obstack_free (&temporary_obstack, temporary_firstobj);
+ *c_ptr++ = "-fno-exceptions";
+
+ /* !!! When GCC calls collect2,
+ it does not know whether it is calling collect2 or ld.
+ So collect2 cannot meaningfully understand any options
+ except those ld understands.
+ If you propose to make GCC pass some other option,
+ just imagine what will happen if ld is really ld!!! */
+
+ /* Parse arguments. Remember output file spec, pass the rest to ld. */
+ /* After the first file, put in the c++ rt0. */
+
+ first_file = 1;
+ while ((arg = *++argv) != (char *) 0)
+ {
+ *ld1++ = *ld2++ = arg;
+
+ if (arg[0] == '-')
+ {
+ switch (arg[1])
+ {
+#ifdef COLLECT_EXPORT_LIST
+ /* We want to disable automatic exports on AIX when user
+ explicitly puts an export list in command line */
+ case 'b':
+ if (arg[2] == 'E' || strncmp (&arg[2], "export", 6) == 0)
+ export_flag = 1;
+ else if (arg[2] == '6' && arg[3] == '4')
+ aix64_flag = 1;
+ break;
+#endif
+
+ case 'd':
+ if (!strcmp (arg, "-debug"))
+ {
+ /* Already parsed. */
+ ld1--;
+ ld2--;
+ }
+ break;
+
+ case 'l':
+ if (first_file)
+ {
+ /* place o_file BEFORE this argument! */
+ first_file = 0;
+ ld2--;
+ *ld2++ = o_file;
+ *ld2++ = arg;
+ }
+#ifdef COLLECT_EXPORT_LIST
+ {
+ /* Resolving full library name. */
+ char *s = resolve_lib_name (arg+2);
+
+ /* If we will use an import list for this library,
+ we should exclude it from ld args. */
+ if (use_import_list (s))
+ {
+ ld1--;
+ ld2--;
+ }
+
+ /* Saving a full library name. */
+ add_to_list (&libs, s);
+ }
+#endif
+ break;
+
+#ifdef COLLECT_EXPORT_LIST
+ /* Saving directories where to search for libraries. */
+ case 'L':
+ add_prefix (&cmdline_lib_dirs, arg+2);
+ break;
+#endif
+
+ case 'o':
+ if (arg[2] == '\0')
+ output_file = *ld1++ = *ld2++ = *++argv;
+ else
+ output_file = &arg[2];
+ break;
+
+ case 'r':
+ if (arg[2] == '\0')
+ rflag = 1;
+ break;
+
+ case 's':
+ if (arg[2] == '\0' && do_collecting)
+ {
+ /* We must strip after the nm run, otherwise C++ linking
+ will not work. Thus we strip in the second ld run, or
+ else with strip if there is no second ld run. */
+ strip_flag = 1;
+ ld1--;
+ }
+ break;
+
+ case 'v':
+ if (arg[2] == '\0')
+ vflag = 1;
+ break;
+ }
+ }
+ else if ((p = rindex (arg, '.')) != (char *) 0
+ && (strcmp (p, ".o") == 0 || strcmp (p, ".a") == 0
+ || strcmp (p, ".so") == 0))
+ {
+ if (first_file)
+ {
+ first_file = 0;
+ if (p[1] == 'o')
+ *ld2++ = o_file;
+ else
+ {
+ /* place o_file BEFORE this argument! */
+ ld2--;
+ *ld2++ = o_file;
+ *ld2++ = arg;
+ }
+ }
+ if (p[1] == 'o')
+ *object++ = arg;
+#ifdef COLLECT_EXPORT_LIST
+ /* libraries can be specified directly, i.e. without -l flag. */
+ else
+ {
+ /* If we will use an import list for this library,
+ we should exclude it from ld args. */
+ if (use_import_list (arg))
+ {
+ ld1--;
+ ld2--;
+ }
+
+ /* Saving a full library name. */
+ add_to_list (&libs, arg);
+ }
+#endif
+ }
+ }
+
+#ifdef COLLECT_EXPORT_LIST
+ /* This is added only for debugging purposes. */
+ if (debug)
+ {
+ fprintf (stderr, "List of libraries:\n");
+ dump_list (stderr, "\t", libs.first);
+ }
+
+ /* The AIX linker will discard static constructors in object files if
+ nothing else in the file is referenced, so look at them first. */
+ {
+ char **export_object_lst = object_lst;
+ while (export_object_lst < object)
+ scan_prog_file (*export_object_lst++, PASS_OBJ);
+ }
+ {
+ struct id *list = libs.first;
+ for (; list; list = list->next)
+ scan_prog_file (list->name, PASS_FIRST);
+ }
+ {
+ char *buf1 = alloca (strlen (export_file) + 5);
+ char *buf2 = alloca (strlen (import_file) + 5);
+ sprintf (buf1, "-bE:%s", export_file);
+ sprintf (buf2, "-bI:%s", import_file);
+ *ld1++ = buf1;
+ *ld2++ = buf1;
+ *ld1++ = buf2;
+ *ld2++ = buf2;
+ exportf = fopen (export_file, "w");
+ if (exportf == (FILE *) 0)
+ fatal_perror ("%s", export_file);
+ write_export_file (exportf);
+ if (fclose (exportf))
+ fatal_perror ("closing %s", export_file);
+ importf = fopen (import_file, "w");
+ if (importf == (FILE *) 0)
+ fatal_perror ("%s", import_file);
+ write_import_file (importf);
+ if (fclose (importf))
+ fatal_perror ("closing %s", import_file);
+ }
+#endif
+
+ *c_ptr++ = c_file;
+ *object = *c_ptr = *ld1 = (char *) 0;
+
+ if (vflag)
+ {
+ fprintf (stderr, "collect2 version %s", version_string);
+#ifdef TARGET_VERSION
+ TARGET_VERSION;
+#endif
+ fprintf (stderr, "\n");
+ }
+
+ if (debug)
+ {
+ char *ptr;
+ fprintf (stderr, "ld_file_name = %s\n",
+ (ld_file_name ? ld_file_name : "not found"));
+ fprintf (stderr, "c_file_name = %s\n",
+ (c_file_name ? c_file_name : "not found"));
+ fprintf (stderr, "nm_file_name = %s\n",
+ (nm_file_name ? nm_file_name : "not found"));
+#ifdef LDD_SUFFIX
+ fprintf (stderr, "ldd_file_name = %s\n",
+ (ldd_file_name ? ldd_file_name : "not found"));
+#endif
+ fprintf (stderr, "strip_file_name = %s\n",
+ (strip_file_name ? strip_file_name : "not found"));
+ fprintf (stderr, "c_file = %s\n",
+ (c_file ? c_file : "not found"));
+ fprintf (stderr, "o_file = %s\n",
+ (o_file ? o_file : "not found"));
+
+ ptr = getenv ("COLLECT_GCC_OPTIONS");
+ if (ptr)
+ fprintf (stderr, "COLLECT_GCC_OPTIONS = %s\n", ptr);
+
+ ptr = getenv ("COLLECT_GCC");
+ if (ptr)
+ fprintf (stderr, "COLLECT_GCC = %s\n", ptr);
+
+ ptr = getenv ("COMPILER_PATH");
+ if (ptr)
+ fprintf (stderr, "COMPILER_PATH = %s\n", ptr);
+
+ ptr = getenv ("LIBRARY_PATH");
+ if (ptr)
+ fprintf (stderr, "LIBRARY_PATH = %s\n", ptr);
+
+ fprintf (stderr, "\n");
+ }
+
+ /* Load the program, searching all libraries and attempting to provide
+ undefined symbols from repository information. */
+
+ /* On AIX we do this later. */
+#ifndef COLLECT_EXPORT_LIST
+ do_tlink (ld1_argv, object_lst);
+#endif
+
+ /* If -r or they will be run via some other method, do not build the
+ constructor or destructor list, just return now. */
+ if (rflag
+#ifndef COLLECT_EXPORT_LIST
+ || ! do_collecting
+#endif
+ )
+ {
+#ifdef COLLECT_EXPORT_LIST
+ /* But make sure we delete the export file we may have created. */
+ if (export_file != 0 && export_file[0])
+ maybe_unlink (export_file);
+ if (import_file != 0 && import_file[0])
+ maybe_unlink (import_file);
+#endif
+ maybe_unlink (c_file);
+ maybe_unlink (o_file);
+ return 0;
+ }
+
+ /* Examine the namelist with nm and search it for static constructors
+ and destructors to call.
+ Write the constructor and destructor tables to a .s file and reload. */
+
+ /* On AIX we already done scanning for global constructors/destructors. */
+#ifndef COLLECT_EXPORT_LIST
+ scan_prog_file (output_file, PASS_FIRST);
+#endif
+
+#ifdef SCAN_LIBRARIES
+ scan_libraries (output_file);
+#endif
+
+ if (debug)
+ {
+ fprintf (stderr, "%d constructor(s) found\n", constructors.number);
+ fprintf (stderr, "%d destructor(s) found\n", destructors.number);
+ }
+
+ if (constructors.number == 0 && destructors.number == 0
+ && frame_tables.number == 0
+#if defined (SCAN_LIBRARIES) || defined (COLLECT_EXPORT_LIST)
+ /* If we will be running these functions ourselves, we want to emit
+ stubs into the shared library so that we do not have to relink
+ dependent programs when we add static objects. */
+ && ! shared_obj
+#endif
+ )
+ {
+#ifdef COLLECT_EXPORT_LIST
+ /* Doing tlink without additional code generation */
+ do_tlink (ld1_argv, object_lst);
+#endif
+ /* Strip now if it was requested on the command line. */
+ if (strip_flag)
+ {
+ char **strip_argv = (char **) xcalloc (sizeof (char *), 3);
+ strip_argv[0] = strip_file_name;
+ strip_argv[1] = output_file;
+ strip_argv[2] = (char *) 0;
+ fork_execute ("strip", strip_argv);
+ }
+
+#ifdef COLLECT_EXPORT_LIST
+ maybe_unlink (export_file);
+ maybe_unlink (import_file);
+#endif
+ maybe_unlink (c_file);
+ maybe_unlink (o_file);
+ return 0;
+ }
+
+ /* Sort ctor and dtor lists by priority. */
+ sort_ids (&constructors);
+ sort_ids (&destructors);
+
+ maybe_unlink(output_file);
+ outf = fopen (c_file, "w");
+ if (outf == (FILE *) 0)
+ fatal_perror ("%s", c_file);
+
+ write_c_file (outf, c_file);
+
+ if (fclose (outf))
+ fatal_perror ("closing %s", c_file);
+
+ /* Tell the linker that we have initializer and finalizer functions. */
+#ifdef LD_INIT_SWITCH
+ *ld2++ = LD_INIT_SWITCH;
+ *ld2++ = initname;
+ *ld2++ = LD_FINI_SWITCH;
+ *ld2++ = fininame;
+#endif
+ *ld2 = (char*) 0;
+
+#ifdef COLLECT_EXPORT_LIST
+ if (shared_obj)
+ {
+ add_to_list (&exports, initname);
+ add_to_list (&exports, fininame);
+ add_to_list (&exports, "_GLOBAL__DI");
+ add_to_list (&exports, "_GLOBAL__DD");
+ exportf = fopen (export_file, "w");
+ if (exportf == (FILE *) 0)
+ fatal_perror ("%s", export_file);
+ write_export_file (exportf);
+ if (fclose (exportf))
+ fatal_perror ("closing %s", export_file);
+ }
+#endif
+
+ if (debug)
+ {
+ fprintf (stderr, "\n========== output_file = %s, c_file = %s\n",
+ output_file, c_file);
+ write_c_file (stderr, "stderr");
+ fprintf (stderr, "========== end of c_file\n\n");
+#ifdef COLLECT_EXPORT_LIST
+ fprintf (stderr, "\n========== export_file = %s\n", export_file);
+ write_export_file (stderr);
+ fprintf (stderr, "========== end of export_file\n\n");
+#endif
+ }
+
+ /* Assemble the constructor and destructor tables.
+ Link the tables in with the rest of the program. */
+
+ fork_execute ("gcc", c_argv);
+#ifdef COLLECT_EXPORT_LIST
+ /* On AIX we must call tlink because of possible templates resolution */
+ do_tlink (ld2_argv, object_lst);
+#else
+ /* Otherwise, simply call ld because tlink is already done */
+ fork_execute ("ld", ld2_argv);
+
+ /* Let scan_prog_file do any final mods (OSF/rose needs this for
+ constructors/destructors in shared libraries. */
+ scan_prog_file (output_file, PASS_SECOND);
+#endif
+
+ maybe_unlink (c_file);
+ maybe_unlink (o_file);
+
+#ifdef COLLECT_EXPORT_LIST
+ maybe_unlink (export_file);
+ maybe_unlink (import_file);
+#endif
+
+ return 0;
+}
+
+
+/* Wait for a process to finish, and exit if a non-zero status is found. */
+
+int
+collect_wait (prog)
+ char *prog;
+{
+ int status;
+
+ wait (&status);
+ if (status)
+ {
+ if (WIFSIGNALED (status))
+ {
+ int sig = WTERMSIG (status);
+ error ("%s terminated with signal %d [%s]%s",
+ prog,
+ sig,
+ my_strsignal(sig),
+ (status & 0200) ? ", core dumped" : "");
+
+ collect_exit (FATAL_EXIT_CODE);
+ }
+
+ if (WIFEXITED (status))
+ return WEXITSTATUS (status);
+ }
+ return 0;
+}
+
+static void
+do_wait (prog)
+ char *prog;
+{
+ int ret = collect_wait (prog);
+ if (ret != 0)
+ {
+ error ("%s returned %d exit status", prog, ret);
+ collect_exit (ret);
+ }
+}
+
+
+/* Fork and execute a program, and wait for the reply. */
+
+void
+collect_execute (prog, argv, redir)
+ char *prog;
+ char **argv;
+ char *redir;
+{
+ int pid;
+
+ if (vflag || debug)
+ {
+ char **p_argv;
+ char *str;
+
+ if (argv[0])
+ fprintf (stderr, "%s", argv[0]);
+ else
+ fprintf (stderr, "[cannot find %s]", prog);
+
+ for (p_argv = &argv[1]; (str = *p_argv) != (char *) 0; p_argv++)
+ fprintf (stderr, " %s", str);
+
+ fprintf (stderr, "\n");
+ }
+
+ fflush (stdout);
+ fflush (stderr);
+
+ /* If we cannot find a program we need, complain error. Do this here
+ since we might not end up needing something that we could not find. */
+
+ if (argv[0] == 0)
+ fatal ("cannot find `%s'", prog);
+
+#ifndef __CYGWIN__
+ pid = vfork ();
+ if (pid == -1)
+ fatal_perror (VFORK_STRING);
+
+ if (pid == 0) /* child context */
+ {
+ if (redir)
+ {
+ unlink (redir);
+ if (freopen (redir, "a", stdout) == NULL)
+ fatal_perror ("redirecting stdout: %s", redir);
+ if (freopen (redir, "a", stderr) == NULL)
+ fatal_perror ("redirecting stderr: %s", redir);
+ }
+
+ execvp (argv[0], argv);
+ fatal_perror ("executing %s", prog);
+ }
+#else
+ pid = _spawnvp (_P_NOWAIT, argv[0], argv);
+ if (pid == -1)
+ fatal ("spawnvp failed");
+#endif
+}
+
+static void
+fork_execute (prog, argv)
+ char *prog;
+ char **argv;
+{
+ collect_execute (prog, argv, NULL);
+ do_wait (prog);
+}
+
+/* Unlink a file unless we are debugging. */
+
+static void
+maybe_unlink (file)
+ char *file;
+{
+ if (!debug)
+ unlink (file);
+ else
+ fprintf (stderr, "[Leaving %s]\n", file);
+}
+
+
+static long sequence_number = 0;
+
+/* Add a name to a linked list. */
+
+static void
+add_to_list (head_ptr, name)
+ struct head *head_ptr;
+ char *name;
+{
+ struct id *newid
+ = (struct id *) xcalloc (sizeof (struct id) + strlen (name), 1);
+ struct id *p;
+ strcpy (newid->name, name);
+
+ if (head_ptr->first)
+ head_ptr->last->next = newid;
+ else
+ head_ptr->first = newid;
+
+ /* Check for duplicate symbols. */
+ for (p = head_ptr->first;
+ strcmp (name, p->name) != 0;
+ p = p->next)
+ ;
+ if (p != newid)
+ {
+ head_ptr->last->next = 0;
+ free (newid);
+ return;
+ }
+
+ newid->sequence = ++sequence_number;
+ head_ptr->last = newid;
+ head_ptr->number++;
+}
+
+/* Grab the init priority number from an init function name that
+ looks like "_GLOBAL_.I.12345.foo". */
+
+static int
+extract_init_priority (name)
+ char *name;
+{
+ int pos = 0, pri;
+
+ while (name[pos] == '_')
+ ++pos;
+ pos += 10; /* strlen ("GLOBAL__X_") */
+
+ /* Extract init_p number from ctor/dtor name. */
+ pri = atoi (name + pos);
+ return pri ? pri : DEFAULT_INIT_PRIORITY;
+}
+
+/* Insertion sort the ids from ctor/dtor list HEAD_PTR in descending order.
+ ctors will be run from right to left, dtors from left to right. */
+
+static void
+sort_ids (head_ptr)
+ struct head *head_ptr;
+{
+ /* id holds the current element to insert. id_next holds the next
+ element to insert. id_ptr iterates through the already sorted elements
+ looking for the place to insert id. */
+ struct id *id, *id_next, **id_ptr;
+
+ id = head_ptr->first;
+
+ /* We don't have any sorted elements yet. */
+ head_ptr->first = NULL;
+
+ for (; id; id = id_next)
+ {
+ id_next = id->next;
+ id->sequence = extract_init_priority (id->name);
+
+ for (id_ptr = &(head_ptr->first); ; id_ptr = &((*id_ptr)->next))
+ if (*id_ptr == NULL
+ /* If the sequence numbers are the same, we put the id from the
+ file later on the command line later in the list. */
+ || id->sequence > (*id_ptr)->sequence
+ /* Hack: do lexical compare, too.
+ || (id->sequence == (*id_ptr)->sequence
+ && strcmp (id->name, (*id_ptr)->name) > 0) */
+ )
+ {
+ id->next = *id_ptr;
+ *id_ptr = id;
+ break;
+ }
+ }
+
+ /* Now set the sequence numbers properly so write_c_file works. */
+ for (id = head_ptr->first; id; id = id->next)
+ id->sequence = ++sequence_number;
+}
+
+/* Write: `prefix', the names on list LIST, `suffix'. */
+
+static void
+write_list (stream, prefix, list)
+ FILE *stream;
+ char *prefix;
+ struct id *list;
+{
+ while (list)
+ {
+ fprintf (stream, "%sx%d,\n", prefix, list->sequence);
+ list = list->next;
+ }
+}
+
+#ifdef COLLECT_EXPORT_LIST
+/* This function is really used only on AIX, but may be useful. */
+static int
+is_in_list (prefix, list)
+ char *prefix;
+ struct id *list;
+{
+ while (list)
+ {
+ if (!strcmp (prefix, list->name)) return 1;
+ list = list->next;
+ }
+ return 0;
+}
+#endif
+
+/* Added for debugging purpose. */
+#ifdef COLLECT_EXPORT_LIST
+static void
+dump_list (stream, prefix, list)
+ FILE *stream;
+ char *prefix;
+ struct id *list;
+{
+ while (list)
+ {
+ fprintf (stream, "%s%s,\n", prefix, list->name);
+ list = list->next;
+ }
+}
+#endif
+
+#if 0
+static void
+dump_prefix_list (stream, prefix, list)
+ FILE *stream;
+ char *prefix;
+ struct prefix_list *list;
+{
+ while (list)
+ {
+ fprintf (stream, "%s%s,\n", prefix, list->prefix);
+ list = list->next;
+ }
+}
+#endif
+
+static void
+write_list_with_asm (stream, prefix, list)
+ FILE *stream;
+ char *prefix;
+ struct id *list;
+{
+ while (list)
+ {
+ fprintf (stream, "%sx%d __asm__ (\"%s\");\n",
+ prefix, list->sequence, list->name);
+ list = list->next;
+ }
+}
+
+/* Write out the constructor and destructor tables statically (for a shared
+ object), along with the functions to execute them. */
+
+static void
+write_c_file_stat (stream, name)
+ FILE *stream;
+ char *name;
+{
+ char *prefix, *p, *q;
+ int frames = (frame_tables.number > 0);
+
+ /* Figure out name of output_file, stripping off .so version. */
+ p = rindex (output_file, '/');
+ if (p == 0)
+ p = (char *) output_file;
+ else
+ p++;
+ q = p;
+ while (q)
+ {
+ q = index (q,'.');
+ if (q == 0)
+ {
+ q = p + strlen (p);
+ break;
+ }
+ else
+ {
+ if (strncmp (q, ".so", 3) == 0)
+ {
+ q += 3;
+ break;
+ }
+ else
+ q++;
+ }
+ }
+ /* q points to null at end of the string (or . of the .so version) */
+ prefix = xmalloc (q - p + 1);
+ strncpy (prefix, p, q - p);
+ prefix[q - p] = 0;
+ for (q = prefix; *q; q++)
+ if (!ISALNUM ((unsigned char)*q))
+ *q = '_';
+ if (debug)
+ fprintf (stderr, "\nwrite_c_file - output name is %s, prefix is %s\n",
+ output_file, prefix);
+
+#define INIT_NAME_FORMAT "_GLOBAL__FI_%s"
+ initname = xmalloc (strlen (prefix) + sizeof (INIT_NAME_FORMAT) - 2);
+ sprintf (initname, INIT_NAME_FORMAT, prefix);
+
+#define FINI_NAME_FORMAT "_GLOBAL__FD_%s"
+ fininame = xmalloc (strlen (prefix) + sizeof (FINI_NAME_FORMAT) - 2);
+ sprintf (fininame, FINI_NAME_FORMAT, prefix);
+
+ free (prefix);
+
+ /* Write the tables as C code */
+
+ fprintf (stream, "static int count;\n");
+ fprintf (stream, "typedef void entry_pt();\n");
+ write_list_with_asm (stream, "extern entry_pt ", constructors.first);
+
+ if (frames)
+ {
+ write_list_with_asm (stream, "extern void *", frame_tables.first);
+
+ fprintf (stream, "\tstatic void *frame_table[] = {\n");
+ write_list (stream, "\t\t&", frame_tables.first);
+ fprintf (stream, "\t0\n};\n");
+
+ /* This must match what's in frame.h. */
+ fprintf (stream, "struct object {\n");
+ fprintf (stream, " void *pc_begin;\n");
+ fprintf (stream, " void *pc_end;\n");
+ fprintf (stream, " void *fde_begin;\n");
+ fprintf (stream, " void *fde_array;\n");
+ fprintf (stream, " __SIZE_TYPE__ count;\n");
+ fprintf (stream, " struct object *next;\n");
+ fprintf (stream, "};\n");
+
+ fprintf (stream, "extern void __register_frame_info_table (void *, struct object *);\n");
+ fprintf (stream, "extern void *__deregister_frame_info (void *);\n");
+
+ fprintf (stream, "static void reg_frame () {\n");
+ fprintf (stream, "\tstatic struct object ob;\n");
+ fprintf (stream, "\t__register_frame_info_table (frame_table, &ob);\n");
+ fprintf (stream, "\t}\n");
+
+ fprintf (stream, "static void dereg_frame () {\n");
+ fprintf (stream, "\t__deregister_frame_info (frame_table);\n");
+ fprintf (stream, "\t}\n");
+ }
+
+ fprintf (stream, "void %s() {\n", initname);
+ if (constructors.number > 0 || frames)
+ {
+ fprintf (stream, "\tstatic entry_pt *ctors[] = {\n");
+ write_list (stream, "\t\t", constructors.first);
+ if (frames)
+ fprintf (stream, "\treg_frame,\n");
+ fprintf (stream, "\t};\n");
+ fprintf (stream, "\tentry_pt **p;\n");
+ fprintf (stream, "\tif (count++ != 0) return;\n");
+ fprintf (stream, "\tp = ctors + %d;\n", constructors.number + frames);
+ fprintf (stream, "\twhile (p > ctors) (*--p)();\n");
+ }
+ else
+ fprintf (stream, "\t++count;\n");
+ fprintf (stream, "}\n");
+ write_list_with_asm (stream, "extern entry_pt ", destructors.first);
+ fprintf (stream, "void %s() {\n", fininame);
+ if (destructors.number > 0 || frames)
+ {
+ fprintf (stream, "\tstatic entry_pt *dtors[] = {\n");
+ write_list (stream, "\t\t", destructors.first);
+ if (frames)
+ fprintf (stream, "\tdereg_frame,\n");
+ fprintf (stream, "\t};\n");
+ fprintf (stream, "\tentry_pt **p;\n");
+ fprintf (stream, "\tif (--count != 0) return;\n");
+ fprintf (stream, "\tp = dtors;\n");
+ fprintf (stream, "\twhile (p < dtors + %d) (*p++)();\n",
+ destructors.number + frames);
+ }
+ fprintf (stream, "}\n");
+
+ if (shared_obj)
+ {
+ fprintf (stream, "void _GLOBAL__DI() {\n\t%s();\n}\n", initname);
+ fprintf (stream, "void _GLOBAL__DD() {\n\t%s();\n}\n", fininame);
+ }
+}
+
+/* Write the constructor/destructor tables. */
+
+#ifndef LD_INIT_SWITCH
+static void
+write_c_file_glob (stream, name)
+ FILE *stream;
+ char *name;
+{
+ /* Write the tables as C code */
+
+ int frames = (frame_tables.number > 0);
+
+ fprintf (stream, "typedef void entry_pt();\n\n");
+
+ write_list_with_asm (stream, "extern entry_pt ", constructors.first);
+
+ if (frames)
+ {
+ write_list_with_asm (stream, "extern void *", frame_tables.first);
+
+ fprintf (stream, "\tstatic void *frame_table[] = {\n");
+ write_list (stream, "\t\t&", frame_tables.first);
+ fprintf (stream, "\t0\n};\n");
+
+ /* This must match what's in frame.h. */
+ fprintf (stream, "struct object {\n");
+ fprintf (stream, " void *pc_begin;\n");
+ fprintf (stream, " void *pc_end;\n");
+ fprintf (stream, " void *fde_begin;\n");
+ fprintf (stream, " void *fde_array;\n");
+ fprintf (stream, " __SIZE_TYPE__ count;\n");
+ fprintf (stream, " struct object *next;\n");
+ fprintf (stream, "};\n");
+
+ fprintf (stream, "extern void __register_frame_info_table (void *, struct object *);\n");
+ fprintf (stream, "extern void *__deregister_frame_info (void *);\n");
+
+ fprintf (stream, "static void reg_frame () {\n");
+ fprintf (stream, "\tstatic struct object ob;\n");
+ fprintf (stream, "\t__register_frame_info_table (frame_table, &ob);\n");
+ fprintf (stream, "\t}\n");
+
+ fprintf (stream, "static void dereg_frame () {\n");
+ fprintf (stream, "\t__deregister_frame_info (frame_table);\n");
+ fprintf (stream, "\t}\n");
+ }
+
+ fprintf (stream, "\nentry_pt * __CTOR_LIST__[] = {\n");
+ fprintf (stream, "\t(entry_pt *) %d,\n", constructors.number + frames);
+ write_list (stream, "\t", constructors.first);
+ if (frames)
+ fprintf (stream, "\treg_frame,\n");
+ fprintf (stream, "\t0\n};\n\n");
+
+ write_list_with_asm (stream, "extern entry_pt ", destructors.first);
+
+ fprintf (stream, "\nentry_pt * __DTOR_LIST__[] = {\n");
+ fprintf (stream, "\t(entry_pt *) %d,\n", destructors.number + frames);
+ write_list (stream, "\t", destructors.first);
+ if (frames)
+ fprintf (stream, "\tdereg_frame,\n");
+ fprintf (stream, "\t0\n};\n\n");
+
+ fprintf (stream, "extern entry_pt %s;\n", NAME__MAIN);
+ fprintf (stream, "entry_pt *__main_reference = %s;\n\n", NAME__MAIN);
+}
+#endif /* ! LD_INIT_SWITCH */
+
+static void
+write_c_file (stream, name)
+ FILE *stream;
+ char *name;
+{
+ fprintf (stream, "#ifdef __cplusplus\nextern \"C\" {\n#endif\n");
+#ifndef LD_INIT_SWITCH
+ if (! shared_obj)
+ write_c_file_glob (stream, name);
+ else
+#endif
+ write_c_file_stat (stream, name);
+ fprintf (stream, "#ifdef __cplusplus\n}\n#endif\n");
+}
+
+#ifdef COLLECT_EXPORT_LIST
+static void
+write_export_file (stream)
+ FILE *stream;
+{
+ struct id *list = exports.first;
+ for (; list; list = list->next)
+ fprintf (stream, "%s\n", list->name);
+}
+
+static void
+write_import_file (stream)
+ FILE *stream;
+{
+ struct id *list = imports.first;
+ fprintf (stream, "%s\n", "#! .");
+ for (; list; list = list->next)
+ fprintf (stream, "%s\n", list->name);
+}
+#endif
+
+#ifdef OBJECT_FORMAT_NONE
+
+/* Generic version to scan the name list of the loaded program for
+ the symbols g++ uses for static constructors and destructors.
+
+ The constructor table begins at __CTOR_LIST__ and contains a count
+ of the number of pointers (or -1 if the constructors are built in a
+ separate section by the linker), followed by the pointers to the
+ constructor functions, terminated with a null pointer. The
+ destructor table has the same format, and begins at __DTOR_LIST__. */
+
+static void
+scan_prog_file (prog_name, which_pass)
+ char *prog_name;
+ enum pass which_pass;
+{
+ void (*int_handler) ();
+ void (*quit_handler) ();
+ char *nm_argv[4];
+ int pid;
+ int argc = 0;
+ int pipe_fd[2];
+ char *p, buf[1024];
+ FILE *inf;
+
+ if (which_pass == PASS_SECOND)
+ return;
+
+ /* If we do not have an `nm', complain. */
+ if (nm_file_name == 0)
+ fatal ("cannot find `nm'");
+
+ nm_argv[argc++] = nm_file_name;
+ if (NM_FLAGS[0] != '\0')
+ nm_argv[argc++] = NM_FLAGS;
+
+ nm_argv[argc++] = prog_name;
+ nm_argv[argc++] = (char *) 0;
+
+ if (pipe (pipe_fd) < 0)
+ fatal_perror ("pipe");
+
+ inf = fdopen (pipe_fd[0], "r");
+ if (inf == (FILE *) 0)
+ fatal_perror ("fdopen");
+
+ /* Trace if needed. */
+ if (vflag)
+ {
+ char **p_argv;
+ char *str;
+
+ for (p_argv = &nm_argv[0]; (str = *p_argv) != (char *) 0; p_argv++)
+ fprintf (stderr, " %s", str);
+
+ fprintf (stderr, "\n");
+ }
+
+ fflush (stdout);
+ fflush (stderr);
+
+ /* Spawn child nm on pipe */
+ pid = vfork ();
+ if (pid == -1)
+ fatal_perror (VFORK_STRING);
+
+ if (pid == 0) /* child context */
+ {
+ /* setup stdout */
+ if (dup2 (pipe_fd[1], 1) < 0)
+ fatal_perror ("dup2 (%d, 1)", pipe_fd[1]);
+
+ if (close (pipe_fd[0]) < 0)
+ fatal_perror ("close (%d)", pipe_fd[0]);
+
+ if (close (pipe_fd[1]) < 0)
+ fatal_perror ("close (%d)", pipe_fd[1]);
+
+ execv (nm_file_name, nm_argv);
+ fatal_perror ("executing %s", nm_file_name);
+ }
+
+ /* Parent context from here on. */
+ int_handler = (void (*) ())signal (SIGINT, SIG_IGN);
+#ifdef SIGQUIT
+ quit_handler = (void (*) ())signal (SIGQUIT, SIG_IGN);
+#endif
+
+ if (close (pipe_fd[1]) < 0)
+ fatal_perror ("close (%d)", pipe_fd[1]);
+
+ if (debug)
+ fprintf (stderr, "\nnm output with constructors/destructors.\n");
+
+ /* Read each line of nm output. */
+ while (fgets (buf, sizeof buf, inf) != (char *) 0)
+ {
+ int ch, ch2;
+ char *name, *end;
+
+ /* If it contains a constructor or destructor name, add the name
+ to the appropriate list. */
+
+ for (p = buf; (ch = *p) != '\0' && ch != '\n' && ch != '_'; p++)
+ if (ch == ' ' && p[1] == 'U' && p[2] == ' ')
+ break;
+
+ if (ch != '_')
+ continue;
+
+ name = p;
+ /* Find the end of the symbol name.
+ Do not include `|', because Encore nm can tack that on the end. */
+ for (end = p; (ch2 = *end) != '\0' && !ISSPACE (ch2) && ch2 != '|';
+ end++)
+ continue;
+
+
+ *end = '\0';
+ switch (is_ctor_dtor (name))
+ {
+ case 1:
+ if (which_pass != PASS_LIB)
+ add_to_list (&constructors, name);
+ break;
+
+ case 2:
+ if (which_pass != PASS_LIB)
+ add_to_list (&destructors, name);
+ break;
+
+ case 3:
+ if (which_pass != PASS_LIB)
+ fatal ("init function found in object %s", prog_name);
+#ifndef LD_INIT_SWITCH
+ add_to_list (&constructors, name);
+#endif
+ break;
+
+ case 4:
+ if (which_pass != PASS_LIB)
+ fatal ("fini function found in object %s", prog_name);
+#ifndef LD_FINI_SWITCH
+ add_to_list (&destructors, name);
+#endif
+ break;
+
+ case 5:
+ if (which_pass != PASS_LIB)
+ add_to_list (&frame_tables, name);
+
+ default: /* not a constructor or destructor */
+ continue;
+ }
+
+ if (debug)
+ fprintf (stderr, "\t%s\n", buf);
+ }
+
+ if (debug)
+ fprintf (stderr, "\n");
+
+ if (fclose (inf) != 0)
+ fatal_perror ("fclose of pipe");
+
+ do_wait (nm_file_name);
+
+ signal (SIGINT, int_handler);
+#ifdef SIGQUIT
+ signal (SIGQUIT, quit_handler);
+#endif
+}
+
+#if SUNOS4_SHARED_LIBRARIES
+
+/* Routines to scan the SunOS 4 _DYNAMIC structure to find shared libraries
+ that the output file depends upon and their initialization/finalization
+ routines, if any. */
+
+#include <a.out.h>
+#include <fcntl.h>
+#include <link.h>
+#include <sys/mman.h>
+#include <sys/param.h>
+#include <unistd.h>
+#include <sys/dir.h>
+
+/* pointers to the object file */
+unsigned object; /* address of memory mapped file */
+unsigned objsize; /* size of memory mapped to file */
+char * code; /* pointer to code segment */
+char * data; /* pointer to data segment */
+struct nlist *symtab; /* pointer to symbol table */
+struct link_dynamic *ld;
+struct link_dynamic_2 *ld_2;
+struct head libraries;
+
+/* Map the file indicated by NAME into memory and store its address. */
+
+static void
+mapfile (name)
+ char *name;
+{
+ int fp;
+ struct stat s;
+ if ((fp = open (name, O_RDONLY)) == -1)
+ fatal ("unable to open file '%s'", name);
+ if (fstat (fp, &s) == -1)
+ fatal ("unable to stat file '%s'", name);
+
+ objsize = s.st_size;
+ object = (unsigned) mmap (0, objsize, PROT_READ|PROT_WRITE, MAP_PRIVATE,
+ fp, 0);
+ if (object == -1)
+ fatal ("unable to mmap file '%s'", name);
+
+ close (fp);
+}
+
+/* Helpers for locatelib. */
+
+static char *libname;
+
+static int
+libselect (d)
+ struct direct *d;
+{
+ return (strncmp (libname, d->d_name, strlen (libname)) == 0);
+}
+
+/* If one file has an additional numeric extension past LIBNAME, then put
+ that one first in the sort. If both files have additional numeric
+ extensions, then put the one with the higher number first in the sort.
+
+ We must verify that the extension is numeric, because Sun saves the
+ original versions of patched libraries with a .FCS extension. Files with
+ invalid extensions must go last in the sort, so that they will not be used. */
+
+static int
+libcompare (d1, d2)
+ struct direct **d1, **d2;
+{
+ int i1, i2 = strlen (libname);
+ char *e1 = (*d1)->d_name + i2;
+ char *e2 = (*d2)->d_name + i2;
+
+ while (*e1 && *e2 && *e1 == '.' && *e2 == '.'
+ && e1[1] && ISDIGIT (e1[1]) && e2[1] && ISDIGIT (e2[1]))
+ {
+ ++e1;
+ ++e2;
+ i1 = strtol (e1, &e1, 10);
+ i2 = strtol (e2, &e2, 10);
+ if (i1 != i2)
+ return i1 - i2;
+ }
+
+ if (*e1)
+ {
+ /* It has a valid numeric extension, prefer this one. */
+ if (*e1 == '.' && e1[1] && ISDIGIT (e1[1]))
+ return 1;
+ /* It has a invalid numeric extension, must prefer the other one. */
+ else
+ return -1;
+ }
+ else if (*e2)
+ {
+ /* It has a valid numeric extension, prefer this one. */
+ if (*e2 == '.' && e2[1] && ISDIGIT (e2[1]))
+ return -1;
+ /* It has a invalid numeric extension, must prefer the other one. */
+ else
+ return 1;
+ }
+ else
+ return 0;
+}
+
+/* Given the name NAME of a dynamic dependency, find its pathname and add
+ it to the list of libraries. */
+
+static void
+locatelib (name)
+ char *name;
+{
+ static char **l;
+ static int cnt;
+ char buf[MAXPATHLEN];
+ char *p, *q;
+ char **pp;
+
+ if (l == 0)
+ {
+ char *ld_rules;
+ char *ldr = 0;
+ /* counting elements in array, need 1 extra for null */
+ cnt = 1;
+ ld_rules = (char *) (ld_2->ld_rules + code);
+ if (ld_rules)
+ {
+ cnt++;
+ for (; *ld_rules != 0; ld_rules++)
+ if (*ld_rules == ':')
+ cnt++;
+ ld_rules = (char *) (ld_2->ld_rules + code);
+ ldr = (char *) malloc (strlen (ld_rules) + 1);
+ strcpy (ldr, ld_rules);
+ }
+ p = getenv ("LD_LIBRARY_PATH");
+ q = 0;
+ if (p)
+ {
+ cnt++;
+ for (q = p ; *q != 0; q++)
+ if (*q == ':')
+ cnt++;
+ q = (char *) malloc (strlen (p) + 1);
+ strcpy (q, p);
+ }
+ l = (char **) malloc ((cnt + 3) * sizeof (char *));
+ pp = l;
+ if (ldr)
+ {
+ *pp++ = ldr;
+ for (; *ldr != 0; ldr++)
+ if (*ldr == ':')
+ {
+ *ldr++ = 0;
+ *pp++ = ldr;
+ }
+ }
+ if (q)
+ {
+ *pp++ = q;
+ for (; *q != 0; q++)
+ if (*q == ':')
+ {
+ *q++ = 0;
+ *pp++ = q;
+ }
+ }
+ /* built in directories are /lib, /usr/lib, and /usr/local/lib */
+ *pp++ = "/lib";
+ *pp++ = "/usr/lib";
+ *pp++ = "/usr/local/lib";
+ *pp = 0;
+ }
+ libname = name;
+ for (pp = l; *pp != 0 ; pp++)
+ {
+ struct direct **namelist;
+ int entries;
+ if ((entries = scandir (*pp, &namelist, libselect, libcompare)) > 0)
+ {
+ sprintf (buf, "%s/%s", *pp, namelist[entries - 1]->d_name);
+ add_to_list (&libraries, buf);
+ if (debug)
+ fprintf (stderr, "%s\n", buf);
+ break;
+ }
+ }
+ if (*pp == 0)
+ {
+ if (debug)
+ fprintf (stderr, "not found\n");
+ else
+ fatal ("dynamic dependency %s not found", name);
+ }
+}
+
+/* Scan the _DYNAMIC structure of the output file to find shared libraries
+ that it depends upon and any constructors or destructors they contain. */
+
+static void
+scan_libraries (prog_name)
+ char *prog_name;
+{
+ struct exec *header;
+ char *base;
+ struct link_object *lo;
+ char buff[MAXPATHLEN];
+ struct id *list;
+
+ mapfile (prog_name);
+ header = (struct exec *)object;
+ if (N_BADMAG (*header))
+ fatal ("bad magic number in file '%s'", prog_name);
+ if (header->a_dynamic == 0)
+ return;
+
+ code = (char *) (N_TXTOFF (*header) + (long) header);
+ data = (char *) (N_DATOFF (*header) + (long) header);
+ symtab = (struct nlist *) (N_SYMOFF (*header) + (long) header);
+
+ if (header->a_magic == ZMAGIC && header->a_entry == 0x20)
+ {
+ /* shared object */
+ ld = (struct link_dynamic *) (symtab->n_value + code);
+ base = code;
+ }
+ else
+ {
+ /* executable */
+ ld = (struct link_dynamic *) data;
+ base = code-PAGSIZ;
+ }
+
+ if (debug)
+ fprintf (stderr, "dynamic dependencies.\n");
+
+ ld_2 = (struct link_dynamic_2 *) ((long) ld->ld_un.ld_2 + (long)base);
+ for (lo = (struct link_object *) ld_2->ld_need; lo;
+ lo = (struct link_object *) lo->lo_next)
+ {
+ char *name;
+ lo = (struct link_object *) ((long) lo + code);
+ name = (char *) (code + lo->lo_name);
+ if (lo->lo_library)
+ {
+ if (debug)
+ fprintf (stderr, "\t-l%s.%d => ", name, lo->lo_major);
+ sprintf (buff, "lib%s.so.%d.%d", name, lo->lo_major, lo->lo_minor);
+ locatelib (buff);
+ }
+ else
+ {
+ if (debug)
+ fprintf (stderr, "\t%s\n", name);
+ add_to_list (&libraries, name);
+ }
+ }
+
+ if (debug)
+ fprintf (stderr, "\n");
+
+ /* now iterate through the library list adding their symbols to
+ the list. */
+ for (list = libraries.first; list; list = list->next)
+ scan_prog_file (list->name, PASS_LIB);
+}
+
+#else /* SUNOS4_SHARED_LIBRARIES */
+#ifdef LDD_SUFFIX
+
+/* Use the List Dynamic Dependencies program to find shared libraries that
+ the output file depends upon and their initialization/finalization
+ routines, if any. */
+
+static void
+scan_libraries (prog_name)
+ char *prog_name;
+{
+ static struct head libraries; /* list of shared libraries found */
+ struct id *list;
+ void (*int_handler) ();
+ void (*quit_handler) ();
+ char *ldd_argv[4];
+ int pid;
+ int argc = 0;
+ int pipe_fd[2];
+ char buf[1024];
+ FILE *inf;
+
+ /* If we do not have an `ldd', complain. */
+ if (ldd_file_name == 0)
+ {
+ error ("cannot find `ldd'");
+ return;
+ }
+
+ ldd_argv[argc++] = ldd_file_name;
+ ldd_argv[argc++] = prog_name;
+ ldd_argv[argc++] = (char *) 0;
+
+ if (pipe (pipe_fd) < 0)
+ fatal_perror ("pipe");
+
+ inf = fdopen (pipe_fd[0], "r");
+ if (inf == (FILE *) 0)
+ fatal_perror ("fdopen");
+
+ /* Trace if needed. */
+ if (vflag)
+ {
+ char **p_argv;
+ char *str;
+
+ for (p_argv = &ldd_argv[0]; (str = *p_argv) != (char *) 0; p_argv++)
+ fprintf (stderr, " %s", str);
+
+ fprintf (stderr, "\n");
+ }
+
+ fflush (stdout);
+ fflush (stderr);
+
+ /* Spawn child ldd on pipe */
+ pid = vfork ();
+ if (pid == -1)
+ fatal_perror (VFORK_STRING);
+
+ if (pid == 0) /* child context */
+ {
+ /* setup stdout */
+ if (dup2 (pipe_fd[1], 1) < 0)
+ fatal_perror ("dup2 (%d, 1)", pipe_fd[1]);
+
+ if (close (pipe_fd[0]) < 0)
+ fatal_perror ("close (%d)", pipe_fd[0]);
+
+ if (close (pipe_fd[1]) < 0)
+ fatal_perror ("close (%d)", pipe_fd[1]);
+
+ execv (ldd_file_name, ldd_argv);
+ fatal_perror ("executing %s", ldd_file_name);
+ }
+
+ /* Parent context from here on. */
+ int_handler = (void (*) ()) signal (SIGINT, SIG_IGN);
+#ifdef SIGQUIT
+ quit_handler = (void (*) ()) signal (SIGQUIT, SIG_IGN);
+#endif
+
+ if (close (pipe_fd[1]) < 0)
+ fatal_perror ("close (%d)", pipe_fd[1]);
+
+ if (debug)
+ fprintf (stderr, "\nldd output with constructors/destructors.\n");
+
+ /* Read each line of ldd output. */
+ while (fgets (buf, sizeof buf, inf) != (char *) 0)
+ {
+ int ch, ch2;
+ char *name, *end, *p = buf;
+
+ /* Extract names of libraries and add to list. */
+ PARSE_LDD_OUTPUT (p);
+ if (p == 0)
+ continue;
+
+ name = p;
+ if (strncmp (name, "not found", sizeof ("not found") - 1) == 0)
+ fatal ("dynamic dependency %s not found", buf);
+
+ /* Find the end of the symbol name. */
+ for (end = p;
+ (ch2 = *end) != '\0' && ch2 != '\n' && !ISSPACE (ch2) && ch2 != '|';
+ end++)
+ continue;
+ *end = '\0';
+
+ if (access (name, R_OK) == 0)
+ add_to_list (&libraries, name);
+ else
+ fatal ("unable to open dynamic dependency '%s'", buf);
+
+ if (debug)
+ fprintf (stderr, "\t%s\n", buf);
+ }
+ if (debug)
+ fprintf (stderr, "\n");
+
+ if (fclose (inf) != 0)
+ fatal_perror ("fclose of pipe");
+
+ do_wait (ldd_file_name);
+
+ signal (SIGINT, int_handler);
+#ifdef SIGQUIT
+ signal (SIGQUIT, quit_handler);
+#endif
+
+ /* now iterate through the library list adding their symbols to
+ the list. */
+ for (list = libraries.first; list; list = list->next)
+ scan_prog_file (list->name, PASS_LIB);
+}
+
+#endif /* LDD_SUFFIX */
+#endif /* SUNOS4_SHARED_LIBRARIES */
+
+#endif /* OBJECT_FORMAT_NONE */
+
+
+/*
+ * COFF specific stuff.
+ */
+
+#ifdef OBJECT_FORMAT_COFF
+
+#if defined(EXTENDED_COFF)
+# define GCC_SYMBOLS(X) (SYMHEADER(X).isymMax + SYMHEADER(X).iextMax)
+# define GCC_SYMENT SYMR
+# define GCC_OK_SYMBOL(X) ((X).st == stProc && (X).sc == scText)
+# define GCC_SYMINC(X) (1)
+# define GCC_SYMZERO(X) (SYMHEADER(X).isymMax)
+# define GCC_CHECK_HDR(X) (PSYMTAB(X) != 0)
+#else
+# define GCC_SYMBOLS(X) (HEADER(ldptr).f_nsyms)
+# define GCC_SYMENT SYMENT
+# define GCC_OK_SYMBOL(X) \
+ (((X).n_sclass == C_EXT) && \
+ ((X).n_scnum > N_UNDEF) && \
+ (((X).n_type & N_TMASK) == (DT_NON << N_BTSHFT) || \
+ ((X).n_type & N_TMASK) == (DT_FCN << N_BTSHFT)))
+# define GCC_UNDEF_SYMBOL(X) \
+ (((X).n_sclass == C_EXT) && ((X).n_scnum == N_UNDEF))
+# define GCC_SYMINC(X) ((X).n_numaux+1)
+# define GCC_SYMZERO(X) 0
+# define GCC_CHECK_HDR(X) \
+ ((HEADER (X).f_magic == U802TOCMAGIC && ! aix64_flag) \
+ || (HEADER (X).f_magic == 0757 && aix64_flag))
+#endif
+
+extern char *ldgetname ();
+
+/* COFF version to scan the name list of the loaded program for
+ the symbols g++ uses for static constructors and destructors.
+
+ The constructor table begins at __CTOR_LIST__ and contains a count
+ of the number of pointers (or -1 if the constructors are built in a
+ separate section by the linker), followed by the pointers to the
+ constructor functions, terminated with a null pointer. The
+ destructor table has the same format, and begins at __DTOR_LIST__. */
+
+static void
+scan_prog_file (prog_name, which_pass)
+ char *prog_name;
+ enum pass which_pass;
+{
+ LDFILE *ldptr = NULL;
+ int sym_index, sym_count;
+ int is_shared = 0;
+#ifdef COLLECT_EXPORT_LIST
+ /* Should we generate an import list for given prog_name? */
+ int import_flag = (which_pass == PASS_OBJ ? 0 : use_import_list (prog_name));
+#endif
+
+ if (which_pass != PASS_FIRST && which_pass != PASS_OBJ)
+ return;
+
+#ifdef COLLECT_EXPORT_LIST
+ /* We do not need scanning for some standard C libraries. */
+ if (which_pass == PASS_FIRST && ignore_library (prog_name))
+ return;
+
+ /* On AIX we have a loop, because there is not much difference
+ between an object and an archive. This trick allows us to
+ eliminate scan_libraries() function. */
+ do
+ {
+#endif
+ if ((ldptr = ldopen (prog_name, ldptr)) != NULL)
+ {
+ if (! MY_ISCOFF (HEADER (ldptr).f_magic))
+ fatal ("%s: not a COFF file", prog_name);
+
+ if (GCC_CHECK_HDR (ldptr))
+ {
+ sym_count = GCC_SYMBOLS (ldptr);
+ sym_index = GCC_SYMZERO (ldptr);
+
+#ifdef COLLECT_EXPORT_LIST
+ /* Is current archive member a shared object? */
+ is_shared = HEADER (ldptr).f_flags & F_SHROBJ;
+#endif
+
+ while (sym_index < sym_count)
+ {
+ GCC_SYMENT symbol;
+
+ if (ldtbread (ldptr, sym_index, &symbol) <= 0)
+ break;
+ sym_index += GCC_SYMINC (symbol);
+
+ if (GCC_OK_SYMBOL (symbol))
+ {
+ char *name;
+
+ if ((name = ldgetname (ldptr, &symbol)) == NULL)
+ continue; /* should never happen */
+
+#ifdef XCOFF_DEBUGGING_INFO
+ /* All AIX function names have a duplicate entry
+ beginning with a dot. */
+ if (*name == '.')
+ ++name;
+#endif
+
+ switch (is_ctor_dtor (name))
+ {
+ case 1:
+ if (! is_shared) add_to_list (&constructors, name);
+#ifdef COLLECT_EXPORT_LIST
+ if (which_pass == PASS_OBJ)
+ add_to_list (&exports, name);
+ /* If this symbol was undefined and we are building
+ an import list, we should add a symbol to this
+ list. */
+ else
+ if (import_flag
+ && is_in_list (name, undefined.first))
+ add_to_list (&imports, name);
+#endif
+ break;
+
+ case 2:
+ if (! is_shared) add_to_list (&destructors, name);
+#ifdef COLLECT_EXPORT_LIST
+ if (which_pass == PASS_OBJ)
+ add_to_list (&exports, name);
+ /* If this symbol was undefined and we are building
+ an import list, we should add a symbol to this
+ list. */
+ else
+ if (import_flag
+ && is_in_list (name, undefined.first))
+ add_to_list (&imports, name);
+#endif
+ break;
+
+#ifdef COLLECT_EXPORT_LIST
+ case 3:
+ if (is_shared)
+ add_to_list (&constructors, name);
+ break;
+
+ case 4:
+ if (is_shared)
+ add_to_list (&destructors, name);
+ break;
+#endif
+
+ default: /* not a constructor or destructor */
+#ifdef COLLECT_EXPORT_LIST
+ /* If we are building a shared object on AIX we need
+ to explicitly export all global symbols or add
+ them to import list. */
+ if (shared_obj)
+ {
+ if (which_pass == PASS_OBJ && (! export_flag))
+ add_to_list (&exports, name);
+ else if (! is_shared && which_pass == PASS_FIRST
+ && import_flag
+ && is_in_list(name, undefined.first))
+ add_to_list (&imports, name);
+ }
+#endif
+ continue;
+ }
+
+#if !defined(EXTENDED_COFF)
+ if (debug)
+ fprintf (stderr, "\tsec=%d class=%d type=%s%o %s\n",
+ symbol.n_scnum, symbol.n_sclass,
+ (symbol.n_type ? "0" : ""), symbol.n_type,
+ name);
+#else
+ if (debug)
+ fprintf (stderr,
+ "\tiss = %5d, value = %5ld, index = %5d, name = %s\n",
+ symbol.iss, (long) symbol.value, symbol.index, name);
+#endif
+ }
+#ifdef COLLECT_EXPORT_LIST
+ /* If we are building a shared object we should collect
+ information about undefined symbols for later
+ import list generation. */
+ else if (shared_obj && GCC_UNDEF_SYMBOL (symbol))
+ {
+ char *name;
+
+ if ((name = ldgetname (ldptr, &symbol)) == NULL)
+ continue; /* should never happen */
+
+ /* All AIX function names have a duplicate entry
+ beginning with a dot. */
+ if (*name == '.')
+ ++name;
+ add_to_list (&undefined, name);
+ }
+#endif
+ }
+ }
+#ifdef COLLECT_EXPORT_LIST
+ else
+ {
+ /* If archive contains both 32-bit and 64-bit objects,
+ we want to skip objects in other mode so mismatch normal. */
+ if (debug)
+ fprintf (stderr, "%s : magic=%o aix64=%d mismatch\n",
+ prog_name, HEADER (ldptr).f_magic, aix64_flag);
+ }
+#endif
+ }
+ else
+ {
+ fatal ("%s: cannot open as COFF file", prog_name);
+ }
+#ifdef COLLECT_EXPORT_LIST
+ /* On AIX loop continues while there are more members in archive. */
+ }
+ while (ldclose (ldptr) == FAILURE);
+#else
+ /* Otherwise we simply close ldptr. */
+ (void) ldclose(ldptr);
+#endif
+}
+
+
+#ifdef COLLECT_EXPORT_LIST
+
+/* This new function is used to decide whether we should
+ generate import list for an object or to use it directly. */
+static int
+use_import_list (prog_name)
+ char *prog_name;
+{
+ char *p;
+
+ /* If we do not build a shared object then import list should not be used. */
+ if (! shared_obj) return 0;
+
+ /* Currently we check only for libgcc, but this can be changed in future. */
+ p = strstr (prog_name, "libgcc.a");
+ if (p != 0 && (strlen (p) == sizeof ("libgcc.a") - 1))
+ return 1;
+ return 0;
+}
+
+/* Given a library name without "lib" prefix, this function
+ returns a full library name including a path. */
+static char *
+resolve_lib_name (name)
+ char *name;
+{
+ char *lib_buf;
+ int i, j, l = 0;
+
+ for (i = 0; libpaths[i]; i++)
+ if (libpaths[i]->max_len > l)
+ l = libpaths[i]->max_len;
+
+ lib_buf = xmalloc (l + strlen(name) + 10);
+
+ for (i = 0; libpaths[i]; i++)
+ {
+ struct prefix_list *list = libpaths[i]->plist;
+ for (; list; list = list->next)
+ {
+ for (j = 0; libexts[j]; j++)
+ {
+ /* The following lines are needed because path_prefix list
+ may contain directories both with trailing '/' and
+ without it. */
+ char *p = "";
+ if (list->prefix[strlen(list->prefix)-1] != '/')
+ p = "/";
+ sprintf (lib_buf, "%s%slib%s.%s",
+ list->prefix, p, name, libexts[j]);
+if (debug) fprintf (stderr, "searching for: %s\n", lib_buf);
+ if (file_exists (lib_buf))
+ {
+if (debug) fprintf (stderr, "found: %s\n", lib_buf);
+ return (lib_buf);
+ }
+ }
+ }
+ }
+ if (debug)
+ fprintf (stderr, "not found\n");
+ else
+ fatal ("Library lib%s not found", name);
+ return (NULL);
+}
+
+/* Array of standard AIX libraries which should not
+ be scanned for ctors/dtors. */
+static char* aix_std_libs[] = {
+ "/unix",
+ "/lib/libc.a",
+ "/lib/libc_r.a",
+ "/usr/lib/libc.a",
+ "/usr/lib/libc_r.a",
+ "/usr/lib/threads/libc.a",
+ "/usr/ccs/lib/libc.a",
+ "/usr/ccs/lib/libc_r.a",
+ NULL
+};
+
+/* This function checks the filename and returns 1
+ if this name matches the location of a standard AIX library. */
+static int
+ignore_library (name)
+ char *name;
+{
+ char **p = &aix_std_libs[0];
+ while (*p++ != NULL)
+ if (! strcmp (name, *p)) return 1;
+ return 0;
+}
+
+#endif
+
+#endif /* OBJECT_FORMAT_COFF */
+
+
+/*
+ * OSF/rose specific stuff.
+ */
+
+#ifdef OBJECT_FORMAT_ROSE
+
+/* Union of the various load commands */
+
+typedef union load_union
+{
+ ldc_header_t hdr; /* common header */
+ load_cmd_map_command_t map; /* map indexing other load cmds */
+ interpreter_command_t iprtr; /* interpreter pathname */
+ strings_command_t str; /* load commands strings section */
+ region_command_t region; /* region load command */
+ reloc_command_t reloc; /* relocation section */
+ package_command_t pkg; /* package load command */
+ symbols_command_t sym; /* symbol sections */
+ entry_command_t ent; /* program start section */
+ gen_info_command_t info; /* object information */
+ func_table_command_t func; /* function constructors/destructors */
+} load_union_t;
+
+/* Structure to point to load command and data section in memory. */
+
+typedef struct load_all
+{
+ load_union_t *load; /* load command */
+ char *section; /* pointer to section */
+} load_all_t;
+
+/* Structure to contain information about a file mapped into memory. */
+
+struct file_info
+{
+ char *start; /* start of map */
+ char *name; /* filename */
+ long size; /* size of the file */
+ long rounded_size; /* size rounded to page boundary */
+ int fd; /* file descriptor */
+ int rw; /* != 0 if opened read/write */
+ int use_mmap; /* != 0 if mmap'ed */
+};
+
+extern int decode_mach_o_hdr ();
+extern int encode_mach_o_hdr ();
+
+static void add_func_table PROTO((mo_header_t *, load_all_t *,
+ symbol_info_t *, int));
+static void print_header PROTO((mo_header_t *));
+static void print_load_command PROTO((load_union_t *, size_t, int));
+static void bad_header PROTO((int));
+static struct file_info *read_file PROTO((char *, int, int));
+static void end_file PROTO((struct file_info *));
+
+/* OSF/rose specific version to scan the name list of the loaded
+ program for the symbols g++ uses for static constructors and
+ destructors.
+
+ The constructor table begins at __CTOR_LIST__ and contains a count
+ of the number of pointers (or -1 if the constructors are built in a
+ separate section by the linker), followed by the pointers to the
+ constructor functions, terminated with a null pointer. The
+ destructor table has the same format, and begins at __DTOR_LIST__. */
+
+static void
+scan_prog_file (prog_name, which_pass)
+ char *prog_name;
+ enum pass which_pass;
+{
+ char *obj;
+ mo_header_t hdr;
+ load_all_t *load_array;
+ load_all_t *load_end;
+ load_all_t *load_cmd;
+ int symbol_load_cmds;
+ off_t offset;
+ int i;
+ int num_syms;
+ int status;
+ char *str_sect;
+ struct file_info *obj_file;
+ int prog_fd;
+ mo_lcid_t cmd_strings = -1;
+ symbol_info_t *main_sym = 0;
+ int rw = (which_pass != PASS_FIRST);
+
+ prog_fd = open (prog_name, (rw) ? O_RDWR : O_RDONLY);
+ if (prog_fd < 0)
+ fatal_perror ("cannot read %s", prog_name);
+
+ obj_file = read_file (prog_name, prog_fd, rw);
+ obj = obj_file->start;
+
+ status = decode_mach_o_hdr (obj, MO_SIZEOF_RAW_HDR, MOH_HEADER_VERSION, &hdr);
+ if (status != MO_HDR_CONV_SUCCESS)
+ bad_header (status);
+
+
+ /* Do some basic sanity checks. Note we explicitly use the big endian magic number,
+ since the hardware will automatically swap bytes for us on loading little endian
+ integers. */
+
+#ifndef CROSS_COMPILE
+ if (hdr.moh_magic != MOH_MAGIC_MSB
+ || hdr.moh_header_version != MOH_HEADER_VERSION
+ || hdr.moh_byte_order != OUR_BYTE_ORDER
+ || hdr.moh_data_rep_id != OUR_DATA_REP_ID
+ || hdr.moh_cpu_type != OUR_CPU_TYPE
+ || hdr.moh_cpu_subtype != OUR_CPU_SUBTYPE
+ || hdr.moh_vendor_type != OUR_VENDOR_TYPE)
+ {
+ fatal ("incompatibilities between object file & expected values");
+ }
+#endif
+
+ if (debug)
+ print_header (&hdr);
+
+ offset = hdr.moh_first_cmd_off;
+ load_end = load_array
+ = (load_all_t *) xcalloc (sizeof (load_all_t), hdr.moh_n_load_cmds + 2);
+
+ /* Build array of load commands, calculating the offsets */
+ for (i = 0; i < hdr.moh_n_load_cmds; i++)
+ {
+ load_union_t *load_hdr; /* load command header */
+
+ load_cmd = load_end++;
+ load_hdr = (load_union_t *) (obj + offset);
+
+ /* If modifying the program file, copy the header. */
+ if (rw)
+ {
+ load_union_t *ptr = (load_union_t *) xmalloc (load_hdr->hdr.ldci_cmd_size);
+ bcopy ((char *)load_hdr, (char *)ptr, load_hdr->hdr.ldci_cmd_size);
+ load_hdr = ptr;
+
+ /* null out old command map, because we will rewrite at the end. */
+ if (ptr->hdr.ldci_cmd_type == LDC_CMD_MAP)
+ {
+ cmd_strings = ptr->map.lcm_ld_cmd_strings;
+ ptr->hdr.ldci_cmd_type = LDC_UNDEFINED;
+ }
+ }
+
+ load_cmd->load = load_hdr;
+ if (load_hdr->hdr.ldci_section_off > 0)
+ load_cmd->section = obj + load_hdr->hdr.ldci_section_off;
+
+ if (debug)
+ print_load_command (load_hdr, offset, i);
+
+ offset += load_hdr->hdr.ldci_cmd_size;
+ }
+
+ /* If the last command is the load command map and is not undefined,
+ decrement the count of load commands. */
+ if (rw && load_end[-1].load->hdr.ldci_cmd_type == LDC_UNDEFINED)
+ {
+ load_end--;
+ hdr.moh_n_load_cmds--;
+ }
+
+ /* Go through and process each symbol table section. */
+ symbol_load_cmds = 0;
+ for (load_cmd = load_array; load_cmd < load_end; load_cmd++)
+ {
+ load_union_t *load_hdr = load_cmd->load;
+
+ if (load_hdr->hdr.ldci_cmd_type == LDC_SYMBOLS)
+ {
+ symbol_load_cmds++;
+
+ if (debug)
+ {
+ char *kind = "unknown";
+
+ switch (load_hdr->sym.symc_kind)
+ {
+ case SYMC_IMPORTS: kind = "imports"; break;
+ case SYMC_DEFINED_SYMBOLS: kind = "defined"; break;
+ case SYMC_STABS: kind = "stabs"; break;
+ }
+
+ fprintf (stderr, "\nProcessing symbol table #%d, offset = 0x%.8lx, kind = %s\n",
+ symbol_load_cmds, load_hdr->hdr.ldci_section_off, kind);
+ }
+
+ if (load_hdr->sym.symc_kind != SYMC_DEFINED_SYMBOLS)
+ continue;
+
+ str_sect = load_array[load_hdr->sym.symc_strings_section].section;
+ if (str_sect == (char *) 0)
+ fatal ("string section missing");
+
+ if (load_cmd->section == (char *) 0)
+ fatal ("section pointer missing");
+
+ num_syms = load_hdr->sym.symc_nentries;
+ for (i = 0; i < num_syms; i++)
+ {
+ symbol_info_t *sym = ((symbol_info_t *) load_cmd->section) + i;
+ char *name = sym->si_name.symbol_name + str_sect;
+
+ if (name[0] != '_')
+ continue;
+
+ if (rw)
+ {
+ char *n = name + strlen (name) - strlen (NAME__MAIN);
+
+ if ((n - name) < 0 || strcmp (n, NAME__MAIN))
+ continue;
+ while (n != name)
+ if (*--n != '_')
+ continue;
+
+ main_sym = sym;
+ }
+ else
+ {
+ switch (is_ctor_dtor (name))
+ {
+ case 1:
+ add_to_list (&constructors, name);
+ break;
+
+ case 2:
+ add_to_list (&destructors, name);
+ break;
+
+ default: /* not a constructor or destructor */
+ continue;
+ }
+ }
+
+ if (debug)
+ fprintf (stderr, "\ttype = 0x%.4x, sc = 0x%.2x, flags = 0x%.8x, name = %.30s\n",
+ sym->si_type, sym->si_sc_type, sym->si_flags, name);
+ }
+ }
+ }
+
+ if (symbol_load_cmds == 0)
+ fatal ("no symbol table found");
+
+ /* Update the program file now, rewrite header and load commands. At present,
+ we assume that there is enough space after the last load command to insert
+ one more. Since the first section written out is page aligned, and the
+ number of load commands is small, this is ok for the present. */
+
+ if (rw)
+ {
+ load_union_t *load_map;
+ size_t size;
+
+ if (cmd_strings == -1)
+ fatal ("no cmd_strings found");
+
+ /* Add __main to initializer list.
+ If we are building a program instead of a shared library, do not
+ do anything, since in the current version, you cannot do mallocs
+ and such in the constructors. */
+
+ if (main_sym != (symbol_info_t *) 0
+ && ((hdr.moh_flags & MOH_EXECABLE_F) == 0))
+ add_func_table (&hdr, load_array, main_sym, FNTC_INITIALIZATION);
+
+ if (debug)
+ fprintf (stderr, "\nUpdating header and load commands.\n\n");
+
+ hdr.moh_n_load_cmds++;
+ size = sizeof (load_cmd_map_command_t) + (sizeof (mo_offset_t) * (hdr.moh_n_load_cmds - 1));
+
+ /* Create new load command map. */
+ if (debug)
+ fprintf (stderr, "load command map, %d cmds, new size %ld.\n",
+ (int)hdr.moh_n_load_cmds, (long)size);
+
+ load_map = (load_union_t *) xcalloc (1, size);
+ load_map->map.ldc_header.ldci_cmd_type = LDC_CMD_MAP;
+ load_map->map.ldc_header.ldci_cmd_size = size;
+ load_map->map.lcm_ld_cmd_strings = cmd_strings;
+ load_map->map.lcm_nentries = hdr.moh_n_load_cmds;
+ load_array[hdr.moh_n_load_cmds-1].load = load_map;
+
+ offset = hdr.moh_first_cmd_off;
+ for (i = 0; i < hdr.moh_n_load_cmds; i++)
+ {
+ load_map->map.lcm_map[i] = offset;
+ if (load_array[i].load->hdr.ldci_cmd_type == LDC_CMD_MAP)
+ hdr.moh_load_map_cmd_off = offset;
+
+ offset += load_array[i].load->hdr.ldci_cmd_size;
+ }
+
+ hdr.moh_sizeofcmds = offset - MO_SIZEOF_RAW_HDR;
+
+ if (debug)
+ print_header (&hdr);
+
+ /* Write header */
+ status = encode_mach_o_hdr (&hdr, obj, MO_SIZEOF_RAW_HDR);
+ if (status != MO_HDR_CONV_SUCCESS)
+ bad_header (status);
+
+ if (debug)
+ fprintf (stderr, "writing load commands.\n\n");
+
+ /* Write load commands */
+ offset = hdr.moh_first_cmd_off;
+ for (i = 0; i < hdr.moh_n_load_cmds; i++)
+ {
+ load_union_t *load_hdr = load_array[i].load;
+ size_t size = load_hdr->hdr.ldci_cmd_size;
+
+ if (debug)
+ print_load_command (load_hdr, offset, i);
+
+ bcopy ((char *) load_hdr, (char *) (obj + offset), size);
+ offset += size;
+ }
+ }
+
+ end_file (obj_file);
+
+ if (close (prog_fd))
+ fatal_perror ("closing %s", prog_name);
+
+ if (debug)
+ fprintf (stderr, "\n");
+}
+
+
+/* Add a function table to the load commands to call a function
+ on initiation or termination of the process. */
+
+static void
+add_func_table (hdr_p, load_array, sym, type)
+ mo_header_t *hdr_p; /* pointer to global header */
+ load_all_t *load_array; /* array of ptrs to load cmds */
+ symbol_info_t *sym; /* pointer to symbol entry */
+ int type; /* fntc_type value */
+{
+ /* Add a new load command. */
+ int num_cmds = ++hdr_p->moh_n_load_cmds;
+ int load_index = num_cmds - 1;
+ size_t size = sizeof (func_table_command_t) + sizeof (mo_addr_t);
+ load_union_t *ptr = xcalloc (1, size);
+ load_all_t *load_cmd;
+ int i;
+
+ /* Set the unresolved address bit in the header to force the loader to be
+ used, since kernel exec does not call the initialization functions. */
+ hdr_p->moh_flags |= MOH_UNRESOLVED_F;
+
+ load_cmd = &load_array[load_index];
+ load_cmd->load = ptr;
+ load_cmd->section = (char *) 0;
+
+ /* Fill in func table load command. */
+ ptr->func.ldc_header.ldci_cmd_type = LDC_FUNC_TABLE;
+ ptr->func.ldc_header.ldci_cmd_size = size;
+ ptr->func.ldc_header.ldci_section_off = 0;
+ ptr->func.ldc_header.ldci_section_len = 0;
+ ptr->func.fntc_type = type;
+ ptr->func.fntc_nentries = 1;
+
+ /* copy address, turn it from abs. address to (region,offset) if necessary. */
+ /* Is the symbol already expressed as (region, offset)? */
+ if ((sym->si_flags & SI_ABSOLUTE_VALUE_F) == 0)
+ {
+ ptr->func.fntc_entry_loc[i].adr_lcid = sym->si_value.def_val.adr_lcid;
+ ptr->func.fntc_entry_loc[i].adr_sctoff = sym->si_value.def_val.adr_sctoff;
+ }
+
+ /* If not, figure out which region it's in. */
+ else
+ {
+ mo_vm_addr_t addr = sym->si_value.abs_val;
+ int found = 0;
+
+ for (i = 0; i < load_index; i++)
+ {
+ if (load_array[i].load->hdr.ldci_cmd_type == LDC_REGION)
+ {
+ region_command_t *region_ptr = &load_array[i].load->region;
+
+ if ((region_ptr->regc_flags & REG_ABS_ADDR_F) != 0
+ && addr >= region_ptr->regc_addr.vm_addr
+ && addr <= region_ptr->regc_addr.vm_addr + region_ptr->regc_vm_size)
+ {
+ ptr->func.fntc_entry_loc[0].adr_lcid = i;
+ ptr->func.fntc_entry_loc[0].adr_sctoff = addr - region_ptr->regc_addr.vm_addr;
+ found++;
+ break;
+ }
+ }
+ }
+
+ if (!found)
+ fatal ("could not convert 0x%l.8x into a region", addr);
+ }
+
+ if (debug)
+ fprintf (stderr,
+ "%s function, region %d, offset = %ld (0x%.8lx)\n",
+ (type == FNTC_INITIALIZATION) ? "init" : "term",
+ (int)ptr->func.fntc_entry_loc[i].adr_lcid,
+ (long)ptr->func.fntc_entry_loc[i].adr_sctoff,
+ (long)ptr->func.fntc_entry_loc[i].adr_sctoff);
+
+}
+
+
+/* Print the global header for an OSF/rose object. */
+
+static void
+print_header (hdr_ptr)
+ mo_header_t *hdr_ptr;
+{
+ fprintf (stderr, "\nglobal header:\n");
+ fprintf (stderr, "\tmoh_magic = 0x%.8lx\n", hdr_ptr->moh_magic);
+ fprintf (stderr, "\tmoh_major_version = %d\n", (int)hdr_ptr->moh_major_version);
+ fprintf (stderr, "\tmoh_minor_version = %d\n", (int)hdr_ptr->moh_minor_version);
+ fprintf (stderr, "\tmoh_header_version = %d\n", (int)hdr_ptr->moh_header_version);
+ fprintf (stderr, "\tmoh_max_page_size = %d\n", (int)hdr_ptr->moh_max_page_size);
+ fprintf (stderr, "\tmoh_byte_order = %d\n", (int)hdr_ptr->moh_byte_order);
+ fprintf (stderr, "\tmoh_data_rep_id = %d\n", (int)hdr_ptr->moh_data_rep_id);
+ fprintf (stderr, "\tmoh_cpu_type = %d\n", (int)hdr_ptr->moh_cpu_type);
+ fprintf (stderr, "\tmoh_cpu_subtype = %d\n", (int)hdr_ptr->moh_cpu_subtype);
+ fprintf (stderr, "\tmoh_vendor_type = %d\n", (int)hdr_ptr->moh_vendor_type);
+ fprintf (stderr, "\tmoh_load_map_cmd_off = %d\n", (int)hdr_ptr->moh_load_map_cmd_off);
+ fprintf (stderr, "\tmoh_first_cmd_off = %d\n", (int)hdr_ptr->moh_first_cmd_off);
+ fprintf (stderr, "\tmoh_sizeofcmds = %d\n", (int)hdr_ptr->moh_sizeofcmds);
+ fprintf (stderr, "\tmon_n_load_cmds = %d\n", (int)hdr_ptr->moh_n_load_cmds);
+ fprintf (stderr, "\tmoh_flags = 0x%.8lx", (long)hdr_ptr->moh_flags);
+
+ if (hdr_ptr->moh_flags & MOH_RELOCATABLE_F)
+ fprintf (stderr, ", relocatable");
+
+ if (hdr_ptr->moh_flags & MOH_LINKABLE_F)
+ fprintf (stderr, ", linkable");
+
+ if (hdr_ptr->moh_flags & MOH_EXECABLE_F)
+ fprintf (stderr, ", execable");
+
+ if (hdr_ptr->moh_flags & MOH_EXECUTABLE_F)
+ fprintf (stderr, ", executable");
+
+ if (hdr_ptr->moh_flags & MOH_UNRESOLVED_F)
+ fprintf (stderr, ", unresolved");
+
+ fprintf (stderr, "\n\n");
+ return;
+}
+
+
+/* Print a short summary of a load command. */
+
+static void
+print_load_command (load_hdr, offset, number)
+ load_union_t *load_hdr;
+ size_t offset;
+ int number;
+{
+ mo_long_t type = load_hdr->hdr.ldci_cmd_type;
+ char *type_str = (char *) 0;
+
+ switch (type)
+ {
+ case LDC_UNDEFINED: type_str = "UNDEFINED"; break;
+ case LDC_CMD_MAP: type_str = "CMD_MAP"; break;
+ case LDC_INTERPRETER: type_str = "INTERPRETER"; break;
+ case LDC_STRINGS: type_str = "STRINGS"; break;
+ case LDC_REGION: type_str = "REGION"; break;
+ case LDC_RELOC: type_str = "RELOC"; break;
+ case LDC_PACKAGE: type_str = "PACKAGE"; break;
+ case LDC_SYMBOLS: type_str = "SYMBOLS"; break;
+ case LDC_ENTRY: type_str = "ENTRY"; break;
+ case LDC_FUNC_TABLE: type_str = "FUNC_TABLE"; break;
+ case LDC_GEN_INFO: type_str = "GEN_INFO"; break;
+ }
+
+ fprintf (stderr,
+ "cmd %2d, sz: 0x%.2lx, coff: 0x%.3lx, doff: 0x%.6lx, dlen: 0x%.6lx",
+ number,
+ (long) load_hdr->hdr.ldci_cmd_size,
+ (long) offset,
+ (long) load_hdr->hdr.ldci_section_off,
+ (long) load_hdr->hdr.ldci_section_len);
+
+ if (type_str == (char *) 0)
+ fprintf (stderr, ", ty: unknown (%ld)\n", (long) type);
+
+ else if (type != LDC_REGION)
+ fprintf (stderr, ", ty: %s\n", type_str);
+
+ else
+ {
+ char *region = "";
+ switch (load_hdr->region.regc_usage_type)
+ {
+ case REG_TEXT_T: region = ", .text"; break;
+ case REG_DATA_T: region = ", .data"; break;
+ case REG_BSS_T: region = ", .bss"; break;
+ case REG_GLUE_T: region = ", .glue"; break;
+#if defined (REG_RDATA_T) && defined (REG_SDATA_T) && defined (REG_SBSS_T) /*mips*/
+ case REG_RDATA_T: region = ", .rdata"; break;
+ case REG_SDATA_T: region = ", .sdata"; break;
+ case REG_SBSS_T: region = ", .sbss"; break;
+#endif
+ }
+
+ fprintf (stderr, ", ty: %s, vaddr: 0x%.8lx, vlen: 0x%.6lx%s\n",
+ type_str,
+ (long) load_hdr->region.regc_vm_addr,
+ (long) load_hdr->region.regc_vm_size,
+ region);
+ }
+
+ return;
+}
+
+
+/* Fatal error when {en,de}code_mach_o_header fails. */
+
+static void
+bad_header (status)
+ int status;
+{
+ char *msg = (char *) 0;
+
+ switch (status)
+ {
+ case MO_ERROR_BAD_MAGIC: msg = "bad magic number"; break;
+ case MO_ERROR_BAD_HDR_VERS: msg = "bad header version"; break;
+ case MO_ERROR_BAD_RAW_HDR_VERS: msg = "bad raw header version"; break;
+ case MO_ERROR_BUF2SML: msg = "raw header buffer too small"; break;
+ case MO_ERROR_OLD_RAW_HDR_FILE: msg = "old raw header file"; break;
+ case MO_ERROR_UNSUPPORTED_VERS: msg = "unsupported version"; break;
+ }
+
+ if (msg == (char *) 0)
+ fatal ("unknown {de,en}code_mach_o_hdr return value %d", status);
+ else
+ fatal ("%s", msg);
+}
+
+
+/* Read a file into a memory buffer. */
+
+static struct file_info *
+read_file (name, fd, rw)
+ char *name; /* filename */
+ int fd; /* file descriptor */
+ int rw; /* read/write */
+{
+ struct stat stat_pkt;
+ struct file_info *p = (struct file_info *) xcalloc (sizeof (struct file_info), 1);
+#ifdef USE_MMAP
+ static int page_size;
+#endif
+
+ if (fstat (fd, &stat_pkt) < 0)
+ fatal_perror ("fstat %s", name);
+
+ p->name = name;
+ p->size = stat_pkt.st_size;
+ p->rounded_size = stat_pkt.st_size;
+ p->fd = fd;
+ p->rw = rw;
+
+#ifdef USE_MMAP
+ if (debug)
+ fprintf (stderr, "mmap %s, %s\n", name, (rw) ? "read/write" : "read-only");
+
+ if (page_size == 0)
+ page_size = sysconf (_SC_PAGE_SIZE);
+
+ p->rounded_size = ((p->size + page_size - 1) / page_size) * page_size;
+ p->start = mmap ((caddr_t) 0,
+ (rw) ? p->rounded_size : p->size,
+ (rw) ? (PROT_READ | PROT_WRITE) : PROT_READ,
+ MAP_FILE | MAP_VARIABLE | MAP_SHARED,
+ fd,
+ 0L);
+
+ if (p->start != (char *) 0 && p->start != (char *) -1)
+ p->use_mmap = 1;
+
+ else
+#endif /* USE_MMAP */
+ {
+ long len;
+
+ if (debug)
+ fprintf (stderr, "read %s\n", name);
+
+ p->use_mmap = 0;
+ p->start = xmalloc (p->size);
+ if (lseek (fd, 0L, SEEK_SET) < 0)
+ fatal_perror ("lseek to 0 on %s", name);
+
+ len = read (fd, p->start, p->size);
+ if (len < 0)
+ fatal_perror ("read %s", name);
+
+ if (len != p->size)
+ fatal ("read %ld bytes, expected %ld, from %s", len, p->size, name);
+ }
+
+ return p;
+}
+
+/* Do anything necessary to write a file back from memory. */
+
+static void
+end_file (ptr)
+ struct file_info *ptr; /* file information block */
+{
+#ifdef USE_MMAP
+ if (ptr->use_mmap)
+ {
+ if (ptr->rw)
+ {
+ if (debug)
+ fprintf (stderr, "msync %s\n", ptr->name);
+
+ if (msync (ptr->start, ptr->rounded_size, MS_ASYNC))
+ fatal_perror ("msync %s", ptr->name);
+ }
+
+ if (debug)
+ fprintf (stderr, "munmap %s\n", ptr->name);
+
+ if (munmap (ptr->start, ptr->size))
+ fatal_perror ("munmap %s", ptr->name);
+ }
+ else
+#endif /* USE_MMAP */
+ {
+ if (ptr->rw)
+ {
+ long len;
+
+ if (debug)
+ fprintf (stderr, "write %s\n", ptr->name);
+
+ if (lseek (ptr->fd, 0L, SEEK_SET) < 0)
+ fatal_perror ("lseek to 0 on %s", ptr->name);
+
+ len = write (ptr->fd, ptr->start, ptr->size);
+ if (len < 0)
+ fatal_perror ("write %s", ptr->name);
+
+ if (len != ptr->size)
+ fatal ("wrote %ld bytes, expected %ld, to %s", len, ptr->size, ptr->name);
+ }
+
+ free (ptr->start);
+ }
+
+ free (ptr);
+}
+
+#endif /* OBJECT_FORMAT_ROSE */