diff options
Diffstat (limited to 'sysdeps')
| -rw-r--r-- | sysdeps/generic/dl-cache.c | 86 | ||||
| -rw-r--r-- | sysdeps/mach/hurd/alpha/longjmp-ctx.c | 38 | ||||
| -rw-r--r-- | sysdeps/mach/hurd/dl-cache.c (renamed from sysdeps/mach/hurd/i386/longjmp-ctx.c) | 21 | ||||
| -rw-r--r-- | sysdeps/mach/hurd/i386/init-fault.c | 41 | ||||
| -rw-r--r-- | sysdeps/mach/hurd/mips/init-fault.c | 41 | ||||
| -rw-r--r-- | sysdeps/mach/hurd/mips/longjmp-ctx.c | 41 | ||||
| -rw-r--r-- | sysdeps/stub/init-fault.c | 38 | ||||
| -rw-r--r-- | sysdeps/stub/longjmp-ctx.c | 32 |
8 files changed, 91 insertions, 247 deletions
diff --git a/sysdeps/generic/dl-cache.c b/sysdeps/generic/dl-cache.c new file mode 100644 index 0000000000..6cd454c7ac --- /dev/null +++ b/sysdeps/generic/dl-cache.c @@ -0,0 +1,86 @@ +/* Support for reading /etc/ld.so.cache files written by Linux ldconfig. +Copyright (C) 1996 Free Software Foundation, Inc. +This file is part of the GNU C Library. + +The GNU C Library is free software; you can redistribute it and/or +modify it under the terms of the GNU Library General Public License as +published by the Free Software Foundation; either version 2 of the +License, or (at your option) any later version. + +The GNU C Library 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 +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with the GNU C Library; see the file COPYING.LIB. If +not, write to the Free Software Foundation, Inc., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +#include <link.h> +#include <stddef.h> +#include <sys/mman.h> + +/* System-dependent function to read a file's whole contents + in the most convenient manner available. */ +extern void *_dl_sysdep_read_whole_file (const char *filename, + size_t *filesize_ptr, + int mmap_prot); + +#define CACHEMAGIC "ld.so-1.7.0" + +struct cache_file + { + char magic[sizeof CACHEMAGIC - 1]; + unsigned int nlibs; + struct + { + int flags; /* This is 1 for an ELF library. */ + unsigned int key, value; /* String table indices. */ + } libs[0]; + }; + +/* Look up NAME in ld.so.cache and return the file name stored there, + or null if none is found. */ + +const char * +_dl_load_cache_lookup (const char *name) +{ + static struct cache_file *cache; + static size_t cachesize; + unsigned int i; + + if (cache == (void *) -1) + /* Previously looked for the cache file and didn't find it. */ + return NULL; + + if (cache == NULL) + { + /* Read the contents of the file. */ + void *file = _dl_sysdep_read_whole_file ("/etc/ld.so.cache", &cachesize, + PROT_READ); + if (file && cachesize > sizeof *cache && + !memcmp (file, CACHEMAGIC, sizeof CACHEMAGIC - 1)) + /* Looks ok. */ + cache = file; + else + { + if (file) + __munmap (file, cachesize); + cache = (void *) -1; + return NULL; + } + } + + for (i = 0; i < cache->nlibs; ++i) + if (cache->libs[i].flags == 1 && /* ELF library entry. */ + /* Make sure string table indices are not bogus before using them. */ + cache->libs[i].key < cachesize - sizeof *cache && + cache->libs[i].value < cachesize - sizeof *cache && + /* Does the name match? */ + ! strcmp (name, ((const char *) &cache->libs[cache->nlibs] + + cache->libs[i].key))) + return (const char *) &cache->libs[cache->nlibs] + cache->libs[i].value; + + return NULL; +} diff --git a/sysdeps/mach/hurd/alpha/longjmp-ctx.c b/sysdeps/mach/hurd/alpha/longjmp-ctx.c deleted file mode 100644 index dfc16fdfe4..0000000000 --- a/sysdeps/mach/hurd/alpha/longjmp-ctx.c +++ /dev/null @@ -1,38 +0,0 @@ -/* Perform a `longjmp' on a `struct sigcontext'. Alpha version. -Copyright (C) 1994 Free Software Foundation, Inc. -This file is part of the GNU C Library. - -The GNU C Library is free software; you can redistribute it and/or -modify it under the terms of the GNU Library General Public License as -published by the Free Software Foundation; either version 2 of the -License, or (at your option) any later version. - -The GNU C Library 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 -Library General Public License for more details. - -You should have received a copy of the GNU Library General Public -License along with the GNU C Library; see the file COPYING.LIB. If -not, write to the Free Software Foundation, Inc., 675 Mass Ave, -Cambridge, MA 02139, USA. */ - -#include <setjmp.h> -#include <hurd/signal.h> -#include <string.h> - -void -_hurd_longjmp_sigcontext (struct sigcontext *scp, jmp_buf env, int retval) -{ - memset (scp, 0, sizeof (*scp)); - scp->sc_regs[9] = env[0].__9; - scp->sc_regs[11] = env[0].__11; - scp->sc_regs[12] = env[0].__12; - scp->sc_regs[13] = env[0].__13; - scp->sc_regs[14] = env[0].__14; - scp->sc_regs[15] = (long int) env[0].__fp; - scp->sc_regs[30] = (long int) env[0].__sp; - scp->sc_pc = (long int) env[0].__pc; - - memcpy (&scp->sc_fpregs[2], &env[0].__f2, sizeof (double)); -} diff --git a/sysdeps/mach/hurd/i386/longjmp-ctx.c b/sysdeps/mach/hurd/dl-cache.c index acfbee602e..7d919cd6a9 100644 --- a/sysdeps/mach/hurd/i386/longjmp-ctx.c +++ b/sysdeps/mach/hurd/dl-cache.c @@ -1,5 +1,5 @@ -/* Perform a `longjmp' on a `struct sigcontext'. i386 version. -Copyright (C) 1994 Free Software Foundation, Inc. +/* Stubby version of dl-cache; the Hurd doesn't support this "feature". +Copyright (C) 1996 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -17,19 +17,8 @@ License along with the GNU C Library; see the file COPYING.LIB. If not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ -#include <setjmp.h> -#include <hurd/signal.h> -#include <string.h> - -void -_hurd_longjmp_sigcontext (struct sigcontext *scp, jmp_buf env, int retval) +const char * +_dl_load_cache_lookup (const char *name) { - memset (scp, 0, sizeof (*scp)); - scp->sc_ebx = env[0].__bx; - scp->sc_esi = env[0].__si; - scp->sc_edi = env[0].__di; - scp->sc_ebp = (int) env[0].__bp; - scp->sc_uesp = (int) env[0].__sp; - scp->sc_eip = (int) env[0].__pc; - scp->sc_eax = retval == 0 ? 1 : retval; + return 0; } diff --git a/sysdeps/mach/hurd/i386/init-fault.c b/sysdeps/mach/hurd/i386/init-fault.c deleted file mode 100644 index ff22814308..0000000000 --- a/sysdeps/mach/hurd/i386/init-fault.c +++ /dev/null @@ -1,41 +0,0 @@ -/* Set up a thread_state for proc_handle_exceptions. i386 version. -Copyright (C) 1994 Free Software Foundation, Inc. -This file is part of the GNU C Library. - -The GNU C Library is free software; you can redistribute it and/or -modify it under the terms of the GNU Library General Public License as -published by the Free Software Foundation; either version 2 of the -License, or (at your option) any later version. - -The GNU C Library 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 -Library General Public License for more details. - -You should have received a copy of the GNU Library General Public -License along with the GNU C Library; see the file COPYING.LIB. If -not, write to the Free Software Foundation, Inc., 675 Mass Ave, -Cambridge, MA 02139, USA. */ - -#include <hurd/signal.h> -#include <mach/thread_status.h> -#include <string.h> -#include <setjmp.h> - -extern jmp_buf _hurd_sigthread_fault_env; - -static char fault_stack[32]; -static volatile void -faulted (void) -{ - __longjmp (_hurd_sigthread_fault_env, 1); -} - -void -_hurd_initialize_fault_recovery_state (void *state) -{ - struct i386_thread_state *ts = state; - memset (ts, 0, sizeof (*ts)); - ts->uesp = (int) &fault_stack[sizeof (fault_stack)]; - ts->eip = (int) &faulted; -} diff --git a/sysdeps/mach/hurd/mips/init-fault.c b/sysdeps/mach/hurd/mips/init-fault.c deleted file mode 100644 index e6f8acf64d..0000000000 --- a/sysdeps/mach/hurd/mips/init-fault.c +++ /dev/null @@ -1,41 +0,0 @@ -/* Set up a thread_state for proc_handle_exceptions. MIPS version. -Copyright (C) 1994 Free Software Foundation, Inc. -This file is part of the GNU C Library. - -The GNU C Library is free software; you can redistribute it and/or -modify it under the terms of the GNU Library General Public License as -published by the Free Software Foundation; either version 2 of the -License, or (at your option) any later version. - -The GNU C Library 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 -Library General Public License for more details. - -You should have received a copy of the GNU Library General Public -License along with the GNU C Library; see the file COPYING.LIB. If -not, write to the Free Software Foundation, Inc., 675 Mass Ave, -Cambridge, MA 02139, USA. */ - -#include <hurd/signal.h> -#include <mach/thread_status.h> -#include <string.h> -#include <setjmp.h> - -extern jmp_buf _hurd_sigthread_fault_env; - -static char fault_stack[32]; -static volatile void -faulted (void) -{ - __longjmp (_hurd_sigthread_fault_env, 1); -} - -void -_hurd_initialize_fault_recovery_state (void *state) -{ - struct mips_thread_state *ts = state; - memset (ts, 0, sizeof (*ts)); - ts->r29 = (int) &fault_stack[sizeof (fault_stack)]; - ts->pc = (int) &faulted; -} diff --git a/sysdeps/mach/hurd/mips/longjmp-ctx.c b/sysdeps/mach/hurd/mips/longjmp-ctx.c deleted file mode 100644 index 0c78f6b4d6..0000000000 --- a/sysdeps/mach/hurd/mips/longjmp-ctx.c +++ /dev/null @@ -1,41 +0,0 @@ -/* Perform a `longjmp' on a `struct sigcontext'. MIPS version. -Copyright (C) 1994 Free Software Foundation, Inc. -This file is part of the GNU C Library. - -The GNU C Library is free software; you can redistribute it and/or -modify it under the terms of the GNU Library General Public License as -published by the Free Software Foundation; either version 2 of the -License, or (at your option) any later version. - -The GNU C Library 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 -Library General Public License for more details. - -You should have received a copy of the GNU Library General Public -License along with the GNU C Library; see the file COPYING.LIB. If -not, write to the Free Software Foundation, Inc., 675 Mass Ave, -Cambridge, MA 02139, USA. */ - -#include <setjmp.h> -#include <hurd/signal.h> -#include <string.h> - -void -_hurd_longjmp_sigcontext (struct sigcontext *scp, jmp_buf env, int retval) -{ - scp->sc_gpr[16] = env[0].__regs[0]; - scp->sc_gpr[17] = env[0].__regs[1]; - scp->sc_gpr[18] = env[0].__regs[2]; - scp->sc_gpr[19] = env[0].__regs[3]; - scp->sc_gpr[20] = env[0].__regs[4]; - scp->sc_gpr[21] = env[0].__regs[5]; - scp->sc_gpr[22] = env[0].__regs[6]; - scp->sc_gpr[23] = env[0].__regs[7]; - - scp->sc_gpr[28] = (int) env[0].__gp; - scp->sc_fp = (int) env[0].__fp; - scp->sc_sp = (int) env[0].__sp; - scp->sc_pc = (int) env[0].__pc; - scp->sc_gpr[2] = retval ?: 1; -} diff --git a/sysdeps/stub/init-fault.c b/sysdeps/stub/init-fault.c deleted file mode 100644 index 1ba468078f..0000000000 --- a/sysdeps/stub/init-fault.c +++ /dev/null @@ -1,38 +0,0 @@ -/* Set up a thread_state for proc_handle_exceptions. Stub version. -Copyright (C) 1994 Free Software Foundation, Inc. -This file is part of the GNU C Library. - -The GNU C Library is free software; you can redistribute it and/or -modify it under the terms of the GNU Library General Public License as -published by the Free Software Foundation; either version 2 of the -License, or (at your option) any later version. - -The GNU C Library 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 -Library General Public License for more details. - -You should have received a copy of the GNU Library General Public -License along with the GNU C Library; see the file COPYING.LIB. If -not, write to the Free Software Foundation, Inc., 675 Mass Ave, -Cambridge, MA 02139, USA. */ - -#include <hurd.h> -#include <mach/thread_status.h> - -static char fault_stack[32]; -static volatile void -faulted (void) -{ - __longjmp (_hurd_sigthread_fault_env, 1); -} - -void -_hurd_initialize_fault_recovery_state (void *state) -{ - struct hurd_thread_state *ts = state; - memset (ts, 0, sizeof (*ts)); - /* Point the SP in TS at the fault stack, - and set the PC to run `faulted' (above). */ - #error "Need to write sysdeps/mach/hurd/MACHINE/init_fault.c" -} diff --git a/sysdeps/stub/longjmp-ctx.c b/sysdeps/stub/longjmp-ctx.c deleted file mode 100644 index 11ed609f3b..0000000000 --- a/sysdeps/stub/longjmp-ctx.c +++ /dev/null @@ -1,32 +0,0 @@ -/* Perform a `longjmp' on a `struct sigcontext'. Stub version. -Copyright (C) 1994 Free Software Foundation, Inc. -This file is part of the GNU C Library. - -The GNU C Library is free software; you can redistribute it and/or -modify it under the terms of the GNU Library General Public License as -published by the Free Software Foundation; either version 2 of the -License, or (at your option) any later version. - -The GNU C Library 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 -Library General Public License for more details. - -You should have received a copy of the GNU Library General Public -License along with the GNU C Library; see the file COPYING.LIB. If -not, write to the Free Software Foundation, Inc., 675 Mass Ave, -Cambridge, MA 02139, USA. */ - -#include <setjmp.h> -#include <signal.h> -#include <string.h> - -void -_hurd_longjmp_sigcontext (struct sigcontext *scp, jmp_buf env, int retval) -{ - memset (scp, 0, sizeof (*scp)); - /* Set all the registers in *SCP to the values described by ENV and RETVAL. - After this, calling `__sigreturn (SCP)' in that thread should be just - like calling `longjmp (ENV, RETVAL)'. */ - #error "Need to write sysdeps/mach/hurd/MACHINE/longjmp-ctx.c" -} |