X-Git-Url: http://git.sourceforge.jp/view?p=pf3gnuchains%2Fgcc-fork.git;a=blobdiff_plain;f=gcc%2Fcollect2.c;h=e5f404f201499723e8022d37ec856d4b1b0514c9;hp=b50ab77bf1112a8e000097329e3800fffda5a21f;hb=c76251c17fd1812f7f84adbd5b9e26b32eb793f6;hpb=7fad41d46e1b71f0faed6914638b0f10a2d5d748 diff --git a/gcc/collect2.c b/gcc/collect2.c index b50ab77bf11..e5f404f2014 100644 --- a/gcc/collect2.c +++ b/gcc/collect2.c @@ -1,10 +1,8 @@ -/* Collect static initialization info into data structures - that can be traversed by C++ initialization and finalization - routines. - - Copyright (C) 1992 Free Software Foundation, Inc. +/* Collect static initialization info into data structures that can be + traversed by C++ initialization and finalization routines. + Copyright (C) 1992, 93, 94, 95, 96, 1997 Free Software Foundation, Inc. Contributed by Chris Smith (csmith@convex.com). - Heavily modified by Michael Meissner (meissner@osf.org), + 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. @@ -21,11 +19,13 @@ 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, 675 Mass Ave, Cambridge, MA 02139, USA. */ +the Free Software Foundation, 59 Temple Place - Suite 330, +Boston, MA 02111-1307, USA. */ -/* Build tables of static constructors and destructors and run ld. */ +/* Build tables of static constructors and destructors and run ld. */ +#include "config.h" #include #include #include @@ -33,26 +33,32 @@ the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ #include #include #include -#ifdef NO_WAIT_H -#include -#endif - -#ifndef errno -extern int errno; -#endif #define COLLECT -#include "config.h" +#include "demangle.h" +#include "obstack.h" +#include "gansidecl.h" -#ifndef __STDC__ -#define generic char -#define const +#ifndef errno +extern int errno; +#endif +#ifndef HAVE_STRERROR +#if defined(bsd4_4) +extern const char *const sys_errlist[]; +#else +extern char *sys_errlist[]; +#endif +extern int sys_nerr; #else -#define generic void +char *strerror(); #endif +/* Obstack allocation and deallocation routines. */ +#define obstack_chunk_alloc xmalloc +#define obstack_chunk_free free + #ifdef USG #define vfork fork #endif @@ -63,13 +69,20 @@ extern int errno; #define X_OK 1 #endif -/* On MSDOS, write temp files in current dir - because there's no place else we can expect to use. */ -#if __MSDOS__ -#ifndef P_tmpdir -#define P_tmpdir "./" +#ifndef WIFSIGNALED +#define WIFSIGNALED(S) (((S) & 0xff) != 0 && ((S) & 0xff) != 0x7f) +#endif +#ifndef WTERMSIG +#define WTERMSIG(S) ((S) & 0x7f) +#endif +#ifndef WIFEXITED +#define WIFEXITED(S) (((S) & 0xff) == 0) #endif +#ifndef WEXITSTATUS +#define WEXITSTATUS(S) (((S) & 0xff00) >> 8) #endif + +extern char *choose_temp_base (); /* On certain systems, we have code that works by scanning the object file directly. But this code uses system-specific header files and library @@ -78,6 +91,7 @@ extern int errno; 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 @@ -121,6 +135,10 @@ extern int errno; #define MY_ISCOFF(X) ISCOFF (X) #endif +#ifdef XCOFF_DEBUGGING_INFO +#define XCOFF_SCAN_LIBS +#endif + #endif /* OBJECT_FORMAT_COFF */ #ifdef OBJECT_FORMAT_ROSE @@ -153,14 +171,23 @@ extern int errno; /* 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 niether. */ + must define both, or neither. */ #ifndef NAME__MAIN #define NAME__MAIN "__main" #define SYMBOL__MAIN __main #endif +#if defined (LDD_SUFFIX) || SUNOS4_SHARED_LIBRARIES || defined(XCOFF_SCAN_LIBS) +#define SCAN_LIBRARIES +#endif + +#ifdef USE_COLLECT2 +int do_collecting = 1; +#else +int do_collecting = 0; +#endif -/* Linked lists of constructor and destructor names. */ +/* Linked lists of constructor and destructor names. */ struct id { @@ -180,50 +207,100 @@ struct head enum pass { PASS_FIRST, /* without constructors */ + PASS_OBJ, /* individual objects */ + PASS_LIB, /* looking for shared libraries */ PASS_SECOND /* with constructors linked in */ }; #ifndef NO_SYS_SIGLIST +#ifndef DONT_DECLARE_SYS_SIGLIST extern char *sys_siglist[]; #endif +#endif extern char *version_string; -static int vflag; /* true if -v */ +int vflag; /* true if -v */ static int rflag; /* true if -r */ static int strip_flag; /* true if -s */ -static int debug; /* true if -debug */ +int debug; /* true if -debug */ + +static int shared_obj; /* true if -shared */ static int temp_filename_length; /* Length of temp_filename */ static char *temp_filename; /* Base of temp filenames */ -static char *c_file; /* .c for constructor/destructor list. */ -static char *o_file; /* .o for constructor/destructor list. */ +static char *c_file; /* .c for constructor/destructor list. */ +static char *o_file; /* .o for constructor/destructor list. */ +static char *export_file; /* .x for AIX export list. */ +char *ldout; /* File for ld errors. */ static char *output_file; /* Output file for ld. */ static char *nm_file_name; /* pathname of nm */ +static char *ldd_file_name; /* pathname of ldd (or equivalent) */ 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 */ +static struct head exports; /* list of exported symbols */ + +struct obstack temporary_obstack; +struct obstack permanent_obstack; +char * temporary_firstobj; + +/* Defined in the automatically-generated underscore.c. */ +extern int prepends_underscore; extern char *getenv (); extern char *mktemp (); -static void add_to_list (); -static void scan_prog_file (); -static void fork_execute (); -static void do_wait (); -static void write_c_file (); -static void my_exit (); -static void handler (); -static void maybe_unlink (); -static void choose_temp_base (); - -generic *xcalloc (); -generic *xmalloc (); +extern FILE *fdopen (); + +/* 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) */ +}; + +void collect_exit PROTO((int)); +void collect_execute PROTO((char *, char **, char *)); +void dump_file PROTO((char *)); +static void handler PROTO((int)); +static int is_ctor_dtor PROTO((char *)); +static int is_in_prefix_list PROTO((struct path_prefix *, char *, int)); +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 void write_list PROTO((FILE *, char *, struct id *)); +static void write_list_with_asm PROTO((FILE *, char *, struct id *)); +static void write_c_file PROTO((FILE *, char *)); +static void write_export_file PROTO((FILE *)); +static void scan_prog_file PROTO((char *, enum pass)); +static void scan_libraries PROTO((char *)); + +char *xcalloc (); +char *xmalloc (); extern char *index (); extern char *rindex (); +extern void free (); #ifdef NO_DUP2 +int dup2 (oldfd, newfd) int oldfd; int newfd; @@ -233,12 +310,14 @@ dup2 (oldfd, newfd) int fd; if (oldfd == newfd) - return 0; + return oldfd; close (newfd); - while ((fd = dup (oldfd)) != newfd) /* good enough for low fd's */ + 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 @@ -246,10 +325,13 @@ char * my_strerror (e) int e; { - extern char *sys_errlist[]; - extern int sys_nerr; - static char buffer[30]; +#ifdef HAVE_STRERROR + return strerror (e); + +#else + + static char buffer[30]; if (!e) return ""; @@ -258,12 +340,13 @@ my_strerror (e) sprintf (buffer, "Unknown error %d", e); return buffer; +#endif } /* Delete tempfiles and exit function. */ -static void -my_exit (status) +void +collect_exit (status) int status; { if (c_file != 0 && c_file[0]) @@ -272,6 +355,15 @@ my_exit (status) if (o_file != 0 && o_file[0]) maybe_unlink (o_file); + if (export_file != 0 && export_file[0]) + maybe_unlink (export_file); + + if (ldout != 0 && ldout[0]) + { + dump_file (ldout); + maybe_unlink (ldout); + } + if (status != 0 && output_file != 0 && output_file[0]) maybe_unlink (output_file); @@ -279,37 +371,37 @@ my_exit (status) } -/* Die when sys call fails. */ +/* Die when sys call fails. */ -static void +void fatal_perror (string, arg1, arg2, arg3) - char *string; + char *string, *arg1, *arg2, *arg3; { int e = errno; fprintf (stderr, "collect2: "); fprintf (stderr, string, arg1, arg2, arg3); fprintf (stderr, ": %s\n", my_strerror (e)); - my_exit (1); + collect_exit (FATAL_EXIT_CODE); } -/* Just die. */ +/* Just die. */ -static void +void fatal (string, arg1, arg2, arg3) - char *string; + char *string, *arg1, *arg2, *arg3; { fprintf (stderr, "collect2: "); fprintf (stderr, string, arg1, arg2, arg3); fprintf (stderr, "\n"); - my_exit (1); + collect_exit (FATAL_EXIT_CODE); } /* Write error message. */ -static void +void error (string, arg1, arg2, arg3, arg4) - char *string; + char *string, *arg1, *arg2, *arg3, *arg4; { fprintf (stderr, "collect2: "); fprintf (stderr, string, arg1, arg2, arg3, arg4); @@ -336,33 +428,57 @@ handler (signo) if (o_file != 0 && o_file[0]) maybe_unlink (o_file); + if (ldout != 0 && ldout[0]) + maybe_unlink (ldout); + + if (export_file != 0 && export_file[0]) + maybe_unlink (export_file); + signal (signo, SIG_DFL); kill (getpid (), signo); } -generic * +char * xcalloc (size1, size2) int size1, size2; { - generic *ptr = (generic *) calloc (size1, size2); + char *ptr = (char *) calloc (size1, size2); if (ptr) return ptr; fatal ("out of memory"); - return (generic *)0; + return (char *) 0; } -generic * +char * xmalloc (size) - int size; + unsigned size; { - generic *ptr = (generic *) malloc (size); + char *ptr = (char *) malloc (size); if (ptr) return ptr; fatal ("out of memory"); - return (generic *)0; + return (char *) 0; +} + +char * +xrealloc (ptr, size) + char *ptr; + unsigned size; +{ + register char *value = (char *) realloc (ptr, size); + if (value == 0) + fatal ("virtual memory exhausted"); + return value; +} + +int +file_exists (name) + char *name; +{ + return access (name, R_OK) == 0; } /* Make a copy of a string INPUT with size SIZE. */ @@ -378,6 +494,64 @@ savestring (input, size) return output; } +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 == '$' || c == '.')) + obstack_1grow (&temporary_obstack, c); + if (obstack_object_size (&temporary_obstack) > 0) + { + char *word, *p, *result; + obstack_1grow (&temporary_obstack, '\0'); + word = obstack_finish (&temporary_obstack); + + if (*word == '.') + ++word, putc ('.', stderr); + p = word; + if (*p == '_' && prepends_underscore) + ++p; + + if (no_demangle) + result = 0; + else + result = cplus_demangle (p, DMGL_PARAMS | DMGL_ANSI); + + if (result) + { + int diff; + fputs (result, stderr); + + diff = strlen (word) - strlen (result); + while (diff > 0) + --diff, putc (' ', stderr); + while (diff < 0 && c == ' ') + ++diff, c = getc (stream); + + free (result); + } + else + fputs (word, stderr); + + fflush (stderr); + obstack_free (&temporary_obstack, temporary_firstobj); + } + if (c == EOF) + break; + putc (c, stderr); + } + fclose (stream); +} + /* Decide whether the given symbol is: a constructor (1), a destructor (2), or neither (0). */ @@ -402,8 +576,10 @@ is_ctor_dtor (s) #endif #else { "GLOBAL_$I$", sizeof ("GLOBAL_$I$")-1, 1, 0 }, - { "GLOBAL_$D$", sizeof ("GLOBAL_$I$")-1, 2, 0 }, + { "GLOBAL_$D$", sizeof ("GLOBAL_$D$")-1, 2, 0 }, #endif + { "GLOBAL__FI_", sizeof ("GLOBAL__FI_")-1, 3, 0 }, + { "GLOBAL__FD_", sizeof ("GLOBAL__FD_")-1, 4, 0 }, #ifdef CFRONT_LOSSAGE /* Don't collect cfront initialization functions. cfront has its own linker procedure to collect them; if collect2 gets them too, they get collected twice @@ -432,47 +608,12 @@ is_ctor_dtor (s) } return 0; } - - -/* Compute a string to use as the base of all temporary file names. - It is substituted for %g. */ - -static void -choose_temp_base () -{ - char *base = getenv ("TMPDIR"); - int len; - - if (base == (char *)0) - { -#ifdef P_tmpdir - if (access (P_tmpdir, R_OK | W_OK) == 0) - base = P_tmpdir; -#endif - if (base == (char *)0) - { - if (access ("/usr/tmp", R_OK | W_OK) == 0) - base = "/usr/tmp/"; - else - base = "/tmp/"; - } - } - - len = strlen (base); - temp_filename = xmalloc (len + sizeof("/ccXXXXXX") + 1); - strcpy (temp_filename, base); - if (len > 0 && temp_filename[len-1] != '/') - temp_filename[len++] = '/'; - strcpy (temp_filename + len, "ccXXXXXX"); - - mktemp (temp_filename); - temp_filename_length = strlen (temp_filename); -} /* Routine to add variables to the environment. */ #ifndef HAVE_PUTENV +int putenv (str) char *str; { @@ -483,7 +624,6 @@ putenv (str) char **envp; int num_envs = 0; int name_len = 1; - int str_len = strlen (str); char *p = str; int ch; @@ -501,15 +641,17 @@ putenv (str) if (!strncmp (str, *envp, name_len)) { *envp = str; - return; + return 0; } } /* Add a new environment variable */ environ = (char **) xmalloc (sizeof (char *) * (num_envs+2)); *environ = str; - bcopy (old_environ, environ+1, sizeof (char *) * (num_envs+1)); + bcopy ((char *) old_environ, (char *) (environ + 1), + sizeof (char *) * (num_envs+1)); + return 0; #endif /* VMS */ } @@ -520,22 +662,6 @@ putenv (str) #define PATH_SEPARATOR ':' #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) */ -}; - /* We maintain two prefix lists: one from COMPILER_PATH environment variable and one from the PATH variable. */ @@ -551,12 +677,49 @@ static char *target_machine = TARGET_MACHINE; /* Names under which we were executed. Never return one of those files in our searches. */ -static char *our_file_name, *last_file_name; +static struct path_prefix our_file_names; +/* Determine if STRING is in PPREFIX. + + This utility is currently only used to look up file names. Prefix lists + record directory names. This matters to us because the latter has a + trailing slash, so I've added a flag to handle both. */ + +static int +is_in_prefix_list (pprefix, string, filep) + struct path_prefix *pprefix; + char *string; + int filep; +{ + struct prefix_list *pl; + + if (filep) + { + int len = strlen (string); + + for (pl = pprefix->plist; pl; pl = pl->next) + { + if (strncmp (pl->prefix, string, len) == 0 + && strcmp (pl->prefix + len, "/") == 0) + return 1; + } + } + else + { + for (pl = pprefix->plist; pl; pl = pl->next) + { + if (strcmp (pl->prefix, string) == 0) + return 1; + } + } + + return 0; +} + /* 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. */ + Return 0 if not found, otherwise return its name, allocated with malloc. */ static char * find_a_file (pprefix, name) @@ -588,8 +751,7 @@ find_a_file (pprefix, name) { strcpy (temp, pl->prefix); strcat (temp, name); - if (strcmp (temp, our_file_name) != 0 - && ! (last_file_name != 0 && strcmp (temp, last_file_name) == 0) + if (! is_in_prefix_list (&our_file_names, temp, 1) /* This is a kludge, but there seems no way around it. */ && strcmp (temp, "./ld") != 0 && access (temp, X_OK) == 0) @@ -599,8 +761,7 @@ find_a_file (pprefix, name) /* Some systems have a suffix for executable files. So try appending that. */ strcat (temp, EXECUTABLE_SUFFIX); - if (strcmp (temp, our_file_name) != 0 - && ! (last_file_name != 0 && strcmp (temp, last_file_name) == 0) + if (! is_in_prefix_list (&our_file_names, temp, 1) && access (temp, X_OK) == 0) return temp; #endif @@ -656,40 +817,46 @@ prefix_from_env (env, pprefix) char *p = getenv (env); if (p) - { - char *startp, *endp; - char *nstore = (char *) xmalloc (strlen (p) + 3); + 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); - startp = endp = p; - while (1) + startp = endp = p; + while (1) + { + if (*endp == PATH_SEPARATOR || *endp == 0) { - if (*endp == PATH_SEPARATOR || *endp == 0) + strncpy (nstore, startp, endp-startp); + if (endp == startp) { - 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; - - add_prefix (pprefix, nstore); - if (*endp == 0) - break; - endp = startp = endp + 1; + strcpy (nstore, "./"); + } + else if (endp[-1] != '/') + { + nstore[endp-startp] = '/'; + nstore[endp-startp+1] = 0; } else - endp++; + nstore[endp-startp] = 0; + + add_prefix (pprefix, nstore); + if (*endp == 0) + break; + endp = startp = endp + 1; } + else + endp++; } } -/* Main program. */ +/* Main program. */ int main (argc, argv) @@ -700,54 +867,93 @@ main (argc, argv) char *full_ld_suffix = ld_suffix; char *real_ld_suffix = "real-ld"; char *full_real_ld_suffix = real_ld_suffix; -#if 0 - char *gld_suffix = "gld"; - char *full_gld_suffix = gld_suffix; -#endif + 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; + FILE *outf, *exportf; char *ld_file_name; - char *c_file_name; + char *collect_name; + char *collect_names; char *p; char **c_argv; char **c_ptr; - char **ld1_argv = (char **) xcalloc (sizeof (char *), argc+2); + char **ld1_argv = (char **) xcalloc (sizeof (char *), argc+3); char **ld1 = ld1_argv; - char **ld2_argv = (char **) xcalloc (sizeof (char *), argc+5); + 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+7; - int len; - int clen; #ifdef DEBUG debug = 1; vflag = 1; #endif - our_file_name = argv[0]; - +#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; /* We must check that we do not call ourselves in an infinite - recursion loop. We save the name used for us in the COLLECT_NAME - environment variable, first getting the previous value. + recursion loop. We append the name used for us to the COLLECT_NAMES + environment variable. + + In practice, collect will rarely invoke itself. This can happen now + that we are no longer called gld. A perfect example is when running + gcc in a build directory that has been installed. When looking for + ld's, we'll find our installed version and believe that's the real ld. */ + + /* We must also append COLLECT_NAME to COLLECT_NAMES to watch for the + previous version of collect (the one that used COLLECT_NAME and only + handled two levels of recursion). If we don't we may mutually recurse + forever. This can happen (I think) when bootstrapping the old version + and a new one is installed (rare, but we should handle it). + ??? Hopefully references to COLLECT_NAME can be removed at some point. */ + + collect_name = (char *) getenv ("COLLECT_NAME"); + collect_names = (char *) getenv ("COLLECT_NAMES"); + + p = (char *) xmalloc (strlen ("COLLECT_NAMES=") + + (collect_name ? strlen (collect_name) + 1 : 0) + + (collect_names ? strlen (collect_names) + 1 : 0) + + strlen (argv[0]) + 1); + strcpy (p, "COLLECT_NAMES="); + if (collect_name != 0) + sprintf (p + strlen (p), "%s%c", collect_name, PATH_SEPARATOR); + if (collect_names != 0) + sprintf (p + strlen (p), "%s%c", collect_names, PATH_SEPARATOR); + strcat (p, argv[0]); + putenv (p); - To be fully safe, we need to maintain a list of names that name - been used, but, in practice, two names are enough. */ + prefix_from_env ("COLLECT_NAMES", &our_file_names); - last_file_name = getenv ("COLLECT_NAME"); + /* Set environment variable COLLECT_NAME to our name so the previous version + of collect won't find us. If it does we'll mutually recurse forever. + This can happen when bootstrapping the new version and an old version is + installed. + ??? Hopefully this bit of code can be removed at some point. */ - p = (char *) xmalloc (strlen (our_file_name) + strlen ("COLLECT_NAME=") + 1); - sprintf (p, "COLLECT_NAME=%s", our_file_name); + p = xmalloc (strlen ("COLLECT_NAME=") + strlen (argv[0]) + 1); + sprintf (p, "COLLECT_NAME=%s", argv[0]); putenv (p); p = (char *) getenv ("COLLECT_GCC_OPTIONS"); @@ -831,6 +1037,14 @@ main (argc, argv) 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); @@ -846,54 +1060,64 @@ main (argc, argv) /* Try to discover a valid linker/nm/strip to use. */ -#if 0 - /* Search the (target-specific) compiler dirs for `gld'. */ - ld_file_name = find_a_file (&cpath, gld_suffix); - /* Search the ordinary system bin directories - for `gld' (if native linking) or `TARGET-gld' (if cross). */ - if (ld_file_name == 0) - ld_file_name = find_a_file (&path, full_gld_suffix); -#else - ld_file_name = 0; -#endif - /* Likewise for `real-ld'. */ - if (ld_file_name == 0) - ld_file_name = find_a_file (&cpath, real_ld_suffix); - if (ld_file_name == 0) - ld_file_name = find_a_file (&path, full_real_ld_suffix); /* Maybe we know the right file to use (if not cross). */ #ifdef REAL_LD_FILE_NAME + ld_file_name = find_a_file (&path, REAL_LD_FILE_NAME); if (ld_file_name == 0) - ld_file_name = find_a_file (&path, REAL_LD_FILE_NAME); #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, full_ld_suffix); + 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); + /* If we've invoked ourselves, try again with LD_FILE_NAME. */ + + if (collect_names != 0) + { + if (ld_file_name != 0) + { + argv[0] = ld_file_name; + execvp (argv[0], argv); + } + fatal ("cannot find `ld'"); + } + +#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); -#ifdef REAL_NM_FILE_NAME - if (nm_file_name == 0) - nm_file_name = find_a_file (&path, REAL_NM_FILE_NAME); -#endif 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); -#ifdef REAL_STRIP_FILE_NAME - if (strip_file_name == 0) - strip_file_name = find_a_file (&path, REAL_STRIP_FILE_NAME); -#endif if (strip_file_name == 0) strip_file_name = find_a_file (&path, full_strip_suffix); @@ -922,12 +1146,17 @@ main (argc, argv) *ld1++ = *ld2++ = ld_file_name; - /* Make temp file names. */ - choose_temp_base (); + /* Make temp file names. */ + temp_filename = choose_temp_base (); + temp_filename_length = strlen (temp_filename); c_file = xcalloc (temp_filename_length + sizeof (".c"), 1); o_file = xcalloc (temp_filename_length + sizeof (".o"), 1); + export_file = xmalloc (temp_filename_length + sizeof (".x")); + ldout = xmalloc (temp_filename_length + sizeof (".ld")); + sprintf (ldout, "%s.ld", temp_filename); sprintf (c_file, "%s.c", temp_filename); sprintf (o_file, "%s.o", temp_filename); + sprintf (export_file, "%s.x", temp_filename); *c_ptr++ = c_file_name; *c_ptr++ = "-c"; *c_ptr++ = "-o"; @@ -940,15 +1169,16 @@ main (argc, argv) 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. */ + /* 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) + while ((arg = *++argv) != (char *) 0) { *ld1++ = *ld2++ = arg; if (arg[0] == '-') + { switch (arg[1]) { case 'd': @@ -961,8 +1191,22 @@ main (argc, argv) } break; + case 'l': + if (first_file) + { + /* place o_file BEFORE this argument! */ + first_file = 0; + ld2--; + *ld2++ = o_file; + *ld2++ = arg; + } + break; + case 'o': - output_file = (arg[2] == '\0') ? argv[1] : &arg[2]; + if (arg[2] == '\0') + output_file = *ld1++ = *ld2++ = *++argv; + else + output_file = &arg[2]; break; case 'r': @@ -971,7 +1215,7 @@ main (argc, argv) break; case 's': - if (arg[2] == '\0') + if (arg[2] == '\0' && do_collecting) { /* We must strip after the nm run, otherwise C++ linking won't work. Thus we strip in the second ld run, or @@ -986,13 +1230,25 @@ main (argc, argv) vflag = 1; break; } - - else if (first_file - && (p = rindex (arg, '.')) != (char *)0 - && strcmp (p, ".o") == 0) + } + else if ((p = rindex (arg, '.')) != (char *) 0 + && (strcmp (p, ".o") == 0 || strcmp (p, ".a") == 0)) { - first_file = 0; - *ld2++ = o_file; + 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; } } @@ -1005,13 +1261,35 @@ main (argc, argv) while (*q && *q != ' ') q++; if (*p == '-' && (p[1] == 'm' || p[1] == 'f')) *c_ptr++ = savestring (p, q - p); + if (strncmp (p, "-shared", sizeof ("shared") - 1) == 0) + shared_obj = 1; if (*q) q++; p = q; } +#ifdef COLLECT_EXPORT_LIST + /* The AIX linker will discard static constructors in object files if + nothing else in the file is referenced, so look at them first. */ + while (object_lst < object) + scan_prog_file (*object_lst++, PASS_OBJ); + + { + char *buf = alloca (strlen (export_file) + 5); + sprintf (buf, "-bE:%s", export_file); + *ld1++ = buf; + *ld2++ = buf; + 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 + *c_ptr++ = c_file; - *c_ptr = *ld1 = *ld2 = (char *)0; + *object = *c_ptr = *ld1 = (char *) 0; if (vflag) { @@ -1031,6 +1309,10 @@ main (argc, argv) (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", @@ -1038,6 +1320,10 @@ main (argc, argv) fprintf (stderr, "o_file = %s\n", (o_file ? o_file : "not found")); + ptr = getenv ("COLLECT_NAMES"); + if (ptr) + fprintf (stderr, "COLLECT_NAMES = %s\n", ptr); + ptr = getenv ("COLLECT_GCC_OPTIONS"); if (ptr) fprintf (stderr, "COLLECT_GCC_OPTIONS = %s\n", ptr); @@ -1057,26 +1343,42 @@ main (argc, argv) fprintf (stderr, "\n"); } - /* Load the program, searching all libraries. - 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. */ + /* Load the program, searching all libraries. */ - fork_execute ("ld", ld1_argv); + collect_execute ("ld", ld1_argv, ldout); + do_wait ("ld"); + dump_file (ldout); + unlink (ldout); - /* If -r, don't build the constructor or destructor list, just return now. */ - if (rflag) + /* If -r or they'll be run via some other method, don't build the + constructor or destructor list, just return now. */ + if (rflag || ! do_collecting) 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. */ + scan_prog_file (output_file, PASS_FIRST); +#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) + if (constructors.number == 0 && destructors.number == 0 +#ifdef LDD_SUFFIX + /* If we will be running these functions ourselves, we want to emit + stubs into the shared library so that we don't have to relink + dependent programs when we add static objects. */ + && ! shared_obj +#endif + ) { /* Strip now if it was requested on the command line. */ if (strip_flag) @@ -1087,11 +1389,16 @@ main (argc, argv) strip_argv[2] = (char *) 0; fork_execute ("strip", strip_argv); } + +#ifdef COLLECT_EXPORT_LIST + maybe_unlink (export_file); +#endif return 0; } + maybe_unlink(output_file); outf = fopen (c_file, "w"); - if (outf == (FILE *)0) + if (outf == (FILE *) 0) fatal_perror ("%s", c_file); write_c_file (outf, c_file); @@ -1099,16 +1406,46 @@ main (argc, argv) 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. */ + Link the tables in with the rest of the program. */ fork_execute ("gcc", c_argv); fork_execute ("ld", ld2_argv); @@ -1119,14 +1456,15 @@ main (argc, argv) maybe_unlink (c_file); maybe_unlink (o_file); + maybe_unlink (export_file); return 0; } -/* Wait for a process to finish, and exit if a non-zero status is found. */ +/* Wait for a process to finish, and exit if a non-zero status is found. */ -static void -do_wait (prog) +int +collect_wait (prog) char *prog; { int status; @@ -1134,11 +1472,9 @@ do_wait (prog) wait (&status); if (status) { - int sig = status & 0x7F; - int ret; - - if (sig != -1 && sig != 0) + if (WIFSIGNALED (status)) { + int sig = WTERMSIG (status); #ifdef NO_SYS_SIGLIST error ("%s terminated with signal %d %s", prog, @@ -1152,25 +1488,35 @@ do_wait (prog) (status & 0200) ? ", core dumped" : ""); #endif - my_exit (127); + collect_exit (FATAL_EXIT_CODE); } - ret = ((status & 0xFF00) >> 8); - if (ret != -1 && ret != 0) - { - error ("%s returned %d exit status", prog, ret); - my_exit (ret); - } + 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. */ -static void -fork_execute (prog, argv) +void +collect_execute (prog, argv, redir) char *prog; char **argv; + char *redir; { int pid; @@ -1184,7 +1530,7 @@ fork_execute (prog, argv) else fprintf (stderr, "[cannot find %s]", prog); - for (p_argv = &argv[1]; (str = *p_argv) != (char *)0; p_argv++) + for (p_argv = &argv[1]; (str = *p_argv) != (char *) 0; p_argv++) fprintf (stderr, " %s", str); fprintf (stderr, "\n"); @@ -1211,13 +1557,28 @@ fork_execute (prog, argv) if (pid == 0) /* child context */ { + if (redir) + { + unlink (redir); + if (freopen (redir, "a", stdout) == NULL) + fatal_perror ("redirecting stdout"); + if (freopen (redir, "a", stderr) == NULL) + fatal_perror ("redirecting stderr"); + } + execvp (argv[0], argv); fatal_perror ("executing %s", prog); } +} +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. */ @@ -1239,9 +1600,10 @@ add_to_list (head_ptr, name) struct head *head_ptr; char *name; { - struct id *newid = (struct id *) xcalloc (sizeof (*newid) + strlen (name), 1); + struct id *newid + = (struct id *) xcalloc (sizeof (struct id) + strlen (name), 1); + struct id *p; static long sequence_number = 0; - newid->sequence = ++sequence_number; strcpy (newid->name, name); if (head_ptr->first) @@ -1249,6 +1611,19 @@ add_to_list (head_ptr, name) 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++; } @@ -1282,10 +1657,108 @@ write_list_with_asm (stream, prefix, list) } } -/* Write the constructor/destructor tables. */ +/* Write out the constructor and destructor tables statically (for a shared + object), along with the functions to execute them. */ static void -write_c_file (stream, name) +write_c_file_stat (stream, name) + FILE *stream; + char *name; +{ + char *prefix, *p, *q; + + /* 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 (*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); + fprintf (stream, "void %s() {\n", initname); + if (constructors.number > 0) + { + fprintf (stream, "\tstatic entry_pt *ctors[] = {\n"); + write_list (stream, "\t\t", constructors.first); + 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); + 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) + { + fprintf (stream, "\tstatic entry_pt *dtors[] = {\n"); + write_list (stream, "\t\t", destructors.first); + 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); + } + 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. */ + +static void +write_c_file_glob (stream, name) FILE *stream; char *name; { @@ -1311,6 +1784,29 @@ write_c_file (stream, name) fprintf (stream, "entry_pt *__main_reference = %s;\n\n", NAME__MAIN); } +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"); +} + +static void +write_export_file (stream) + FILE *stream; +{ + struct id *list = exports.first; + for (; list; list = list->next) + fprintf (stream, "%s\n", list->name); +} #ifdef OBJECT_FORMAT_NONE @@ -1337,25 +1833,25 @@ scan_prog_file (prog_name, which_pass) char *p, buf[1024]; FILE *inf; - if (which_pass != PASS_FIRST) + if (which_pass == PASS_SECOND) return; /* If we don't have an `nm', complain. */ if (nm_file_name == 0) fatal ("cannot find `nm'"); - nm_argv[argc++] = "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; + nm_argv[argc++] = (char *) 0; if (pipe (pipe_fd) < 0) fatal_perror ("pipe"); inf = fdopen (pipe_fd[0], "r"); - if (inf == (FILE *)0) + if (inf == (FILE *) 0) fatal_perror ("fdopen"); /* Trace if needed. */ @@ -1364,8 +1860,7 @@ scan_prog_file (prog_name, which_pass) char **p_argv; char *str; - fprintf (stderr, "%s", nm_file_name); - for (p_argv = &nm_argv[1]; (str = *p_argv) != (char *)0; p_argv++) + for (p_argv = &nm_argv[0]; (str = *p_argv) != (char *) 0; p_argv++) fprintf (stderr, " %s", str); fprintf (stderr, "\n"); @@ -1414,18 +1909,19 @@ scan_prog_file (prog_name, which_pass) fprintf (stderr, "\nnm output with constructors/destructors.\n"); /* Read each line of nm output. */ - while (fgets (buf, sizeof buf, inf) != (char *)0) + 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. */ + to the appropriate list. */ for (p = buf; (ch = *p) != '\0' && ch != '\n' && ch != '_'; p++) - ; + if (ch == ' ' && p[1] == 'U' && p[2] == ' ') + break; - if (ch == '\0' || ch == '\n') + if (ch != '_') continue; name = p; @@ -1435,15 +1931,34 @@ scan_prog_file (prog_name, which_pass) end++) continue; + *end = '\0'; switch (is_ctor_dtor (name)) { case 1: - add_to_list (&constructors, name); + 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; default: /* not a constructor or destructor */ @@ -1468,6 +1983,421 @@ scan_prog_file (prog_name, which_pass) #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 +#include +#include +#include +#include +#include +#include + +/* 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 won't 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 don't 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) + { +#ifdef vfork + fatal_perror ("fork"); +#else + fatal_perror ("vfork"); +#endif + } + + 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 */ @@ -1515,7 +2445,7 @@ scan_prog_file (prog_name, which_pass) LDFILE *ldptr = NULL; int sym_index, sym_count; - if (which_pass != PASS_FIRST) + if (which_pass != PASS_FIRST && which_pass != PASS_OBJ) return; if ((ldptr = ldopen (prog_name, ldptr)) == NULL) @@ -1543,20 +2473,25 @@ scan_prog_file (prog_name, which_pass) if ((name = ldgetname (ldptr, &symbol)) == NULL) continue; /* should never happen */ -#ifdef _AIX - /* All AIX function names begin with a dot. */ - if (*name++ != '.') - continue; +#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: add_to_list (&constructors, name); + if (which_pass == PASS_OBJ) + add_to_list (&exports, name); break; case 2: add_to_list (&destructors, name); + if (which_pass == PASS_OBJ) + add_to_list (&exports, name); break; default: /* not a constructor or destructor */ @@ -1581,6 +2516,175 @@ scan_prog_file (prog_name, which_pass) (void) ldclose(ldptr); } +#ifdef XCOFF_SCAN_LIBS +/* Scan imported AIX libraries for GCC static ctors and dtors. + FIXME: it is possible to link an executable without the actual import + library by using an "import file" - a text file listing symbols + exported by a library. To support this, we would have to scan + import files as well as actual shared binaries to find GCC ctors. + TODO: use memory mapping instead of 'ld' routines, files are already + memory mapped, but we could eliminate the extra in-memory copies. + Is it worth the effort? */ + +static void +scan_libraries (prog_name) + char *prog_name; +{ + LDFILE *ldptr; + SCNHDR ldsh; + static struct path_prefix libpath; /* we should only do this once */ + + if ((ldptr = ldopen (prog_name, ldptr)) == NULL) + fatal ("%s: can't open as COFF file", prog_name); + + if (!MY_ISCOFF (HEADER (ldptr).f_magic)) + fatal ("%s: not a COFF file", prog_name); + + /* find and read loader section */ + if (ldnshread (ldptr, _LOADER, &ldsh)) + { + LDHDR ldh; + char *impbuf; + int entry; + + FSEEK (ldptr, ldsh.s_scnptr, BEGINNING); + FREAD (&ldh, sizeof (ldh), 1, ldptr); + /* read import library list */ + impbuf = alloca (ldh.l_istlen); + FSEEK (ldptr, ldh.l_impoff + ldsh.s_scnptr, BEGINNING); + FREAD (impbuf, ldh.l_istlen, 1, ldptr); + + if (debug) + fprintf (stderr, "LIBPATH=%s\n", impbuf); + prefix_from_string (impbuf, &libpath); + + /* skip LIBPATH and empty base and member fields */ + impbuf += strlen (impbuf) + 3; + for (entry = 1; entry < ldh.l_nimpid; ++entry) + { + char *impath = impbuf; + char *implib = impath + strlen (impath) + 1; + char *impmem = implib + strlen (implib) + 1; + char *soname = NULL; + char *trial; + int pathlen; + LDFILE *libptr = NULL; + struct prefix_list *pl; + ARCHDR ah; + + impbuf = impmem + strlen (impmem) + 1; + if (debug) + fprintf (stderr, "PATH+BASE=%s%s\n", impath, implib); + /* Skip AIX kernel exports */ + if (*impath == '/' && *(impath+1) == '\0' + && strcmp (implib, "unix") == 0) + continue; + pathlen = strlen (impath); + trial = alloca (MAX (pathlen + 1, libpath.max_len) + + strlen (implib) + 1); + if (*impath) + { + strcpy (trial, impath); + if (impath[pathlen - 1] != '/') + trial[pathlen++] = '/'; + strcpy (trial + pathlen, implib); + if (access (trial, R_OK) == 0) + soname = trial; + } + else + for (pl = libpath.plist; pl; pl = pl->next) + { + strcpy (trial, pl->prefix); + strcat (trial, implib); + if (access (trial, R_OK) == 0) + { + soname = trial; + break; + } + } + + if (! soname) + fatal ("%s: library not found", implib); + if (debug) + if (*impmem) + fprintf (stderr, "%s (%s)\n", soname, impmem); + else + fprintf (stderr, "%s\n", soname); + + do + { + /* scan imported shared objects for GCC GLOBAL ctors */ + short type; + if ((libptr = ldopen (soname, libptr)) == NULL) + fatal ("%s: can't open import library", soname); + if (TYPE (libptr) == ARTYPE) + { + LDFILE *memptr; + if (! *impmem) + fatal ("%s: no archive member specified", soname); + ldahread (libptr, &ah); + if (strcmp (ah.ar_name, impmem)) + continue; + } + type = HEADER (libptr).f_magic; + if (HEADER (libptr).f_flags & F_SHROBJ) + { + SCNHDR soldsh; + LDHDR soldh; + long symcnt, i; + char *ldstrings; + LDSYM *lsyms; + if (!ldnshread (libptr, _LOADER, &soldsh)) + fatal ("%s: not an import library", soname); + FSEEK (libptr, soldsh.s_scnptr, BEGINNING); + if (FREAD (&soldh, sizeof (soldh), 1, libptr) != 1) + fatal ("%s: can't read loader section", soname); + /*fprintf (stderr, "\tscanning %s\n", soname);*/ + symcnt = soldh.l_nsyms; + lsyms = (LDSYM *) alloca (symcnt * sizeof (*lsyms)); + symcnt = FREAD (lsyms, sizeof (*lsyms), symcnt, libptr); + ldstrings = alloca (soldh.l_stlen); + FSEEK (libptr, soldsh.s_scnptr+soldh.l_stoff, BEGINNING); + FREAD (ldstrings, soldh.l_stlen, 1, libptr); + for (i = 0; i < symcnt; ++i) + { + LDSYM *l = lsyms + i; + if (LDR_EXPORT (*l)) + { + char *expname = 0; + if (l->l_zeroes) + expname = l->l_name; + else if (l->l_offset < soldh.l_stlen) + expname = ldstrings + l->l_offset; + switch (is_ctor_dtor (expname)) + { + case 3: + if (debug) + fprintf (stderr, "\t%s\n", expname); + add_to_list (&constructors, expname); + break; + + case 4: + add_to_list (&destructors, expname); + break; + + default: /* not a constructor or destructor */ + continue; + } + } + } + } + else + fprintf (stderr, "%s: type = %04X flags = %04X\n", + ah.ar_name, type, HEADER (libptr).f_flags); + } + while (ldclose (libptr) == FAILURE); + /* printf (stderr, "closed %s\n", soname); */ + } + } +} +#endif /* XCOFF_SCAN_LIBS */ + #endif /* OBJECT_FORMAT_COFF */ @@ -1629,21 +2733,15 @@ struct file_info }; extern int decode_mach_o_hdr (); - extern int encode_mach_o_hdr (); -static void bad_header (); - -static void print_header (); - -static void print_load_command (); - -static void add_func_table (); - -static struct file_info *read_file (); - -static void end_file (); - +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 @@ -1725,7 +2823,7 @@ scan_prog_file (prog_name, which_pass) if (rw) { load_union_t *ptr = (load_union_t *) xmalloc (load_hdr->hdr.ldci_cmd_size); - bcopy ((generic *)load_hdr, (generic *)ptr, 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. */ @@ -1783,10 +2881,10 @@ scan_prog_file (prog_name, which_pass) continue; str_sect = load_array[load_hdr->sym.symc_strings_section].section; - if (str_sect == (char *)0) + if (str_sect == (char *) 0) fatal ("string section missing"); - if (load_cmd->section == (char *)0) + if (load_cmd->section == (char *) 0) fatal ("section pointer missing"); num_syms = load_hdr->sym.symc_nentries; @@ -1855,7 +2953,7 @@ scan_prog_file (prog_name, which_pass) do anything, since in the current version, you cannot do mallocs and such in the constructors. */ - if (main_sym != (symbol_info_t *)0 + if (main_sym != (symbol_info_t *) 0 && ((hdr.moh_flags & MOH_EXECABLE_F) == 0)) add_func_table (&hdr, load_array, main_sym, FNTC_INITIALIZATION); @@ -1910,7 +3008,7 @@ scan_prog_file (prog_name, which_pass) if (debug) print_load_command (load_hdr, offset, i); - bcopy ((generic *)load_hdr, (generic *)(obj + offset), size); + bcopy ((char *) load_hdr, (char *) (obj + offset), size); offset += size; } } @@ -1949,7 +3047,7 @@ add_func_table (hdr_p, load_array, sym, type) load_cmd = &load_array[load_index]; load_cmd->load = ptr; - load_cmd->section = (char *)0; + load_cmd->section = (char *) 0; /* Fill in func table load command. */ ptr->func.ldc_header.ldci_cmd_type = LDC_FUNC_TABLE; @@ -2058,7 +3156,7 @@ print_load_command (load_hdr, offset, number) int number; { mo_long_t type = load_hdr->hdr.ldci_cmd_type; - char *type_str = (char *)0; + char *type_str = (char *) 0; switch (type) { @@ -2083,7 +3181,7 @@ print_load_command (load_hdr, offset, number) (long) load_hdr->hdr.ldci_section_off, (long) load_hdr->hdr.ldci_section_len); - if (type_str == (char *)0) + if (type_str == (char *) 0) fprintf (stderr, ", ty: unknown (%ld)\n", (long) type); else if (type != LDC_REGION) @@ -2122,7 +3220,7 @@ static void bad_header (status) int status; { - char *msg = (char *)0; + char *msg = (char *) 0; switch (status) { @@ -2134,7 +3232,7 @@ bad_header (status) case MO_ERROR_UNSUPPORTED_VERS: msg = "unsupported version"; break; } - if (msg == (char *)0) + if (msg == (char *) 0) fatal ("unknown {de,en}code_mach_o_hdr return value %d", status); else fatal ("%s", msg); @@ -2172,14 +3270,14 @@ read_file (name, fd, rw) page_size = sysconf (_SC_PAGE_SIZE); p->rounded_size = ((p->size + page_size - 1) / page_size) * page_size; - p->start = mmap ((caddr_t)0, + 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) + if (p->start != (char *) 0 && p->start != (char *) -1) p->use_mmap = 1; else @@ -2205,7 +3303,6 @@ read_file (name, fd, rw) return p; } - /* Do anything necessary to write a file back from memory. */ @@ -2246,16 +3343,16 @@ end_file (ptr) len = write (ptr->fd, ptr->start, ptr->size); if (len < 0) - fatal_perror ("read %s", ptr->name); + fatal_perror ("write %s", ptr->name); if (len != ptr->size) fatal ("wrote %ld bytes, expected %ld, to %s", len, ptr->size, ptr->name); } - free ((generic *)ptr->start); + free (ptr->start); } - free ((generic *)ptr); + free (ptr); } #endif /* OBJECT_FORMAT_ROSE */