diff options
author | peter <peter@FreeBSD.org> | 2002-09-17 01:49:00 +0000 |
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committer | peter <peter@FreeBSD.org> | 2002-09-17 01:49:00 +0000 |
commit | a51c9b66271f0551fb83b90a7db6c464eac2318b (patch) | |
tree | 7d8147c99f6bfb34b7cb47ad46e24a4f7dc93102 /lib/libc/gen/dlfcn.c | |
parent | 2a4cb24fb4a35753b66a2503614b874481e35535 (diff) | |
download | FreeBSD-src-a51c9b66271f0551fb83b90a7db6c464eac2318b.zip FreeBSD-src-a51c9b66271f0551fb83b90a7db6c464eac2318b.tar.gz |
Initiate deorbit burn for the i386-only a.out related support. Moves are
under way to move the remnants of the a.out toolchain to ports. As the
comment in src/Makefile said, this stuff is deprecated and one should not
expect this to remain beyond 4.0-REL. It has already lasted WAY beyond
that.
Notable exceptions:
gcc - I have not touched the a.out generation stuff there.
ldd/ldconfig - still have some code to interface with a.out rtld.
old as/ld/etc - I have not removed these yet, pending their move to ports.
some includes - necessary for ldd/ldconfig for now.
Tested on: i386 (extensively), alpha
Diffstat (limited to 'lib/libc/gen/dlfcn.c')
-rw-r--r-- | lib/libc/gen/dlfcn.c | 79 |
1 files changed, 1 insertions, 78 deletions
diff --git a/lib/libc/gen/dlfcn.c b/lib/libc/gen/dlfcn.c index 4a3500d..ff1d900 100644 --- a/lib/libc/gen/dlfcn.c +++ b/lib/libc/gen/dlfcn.c @@ -28,12 +28,8 @@ __FBSDID("$FreeBSD$"); /* - * Linkage to services provided by the dynamic linker. These are - * implemented differently in ELF and a.out, because the dynamic - * linkers have different interfaces. + * Linkage to services provided by the dynamic linker. */ -#ifdef __ELF__ - #include <dlfcn.h> #include <stddef.h> @@ -107,76 +103,3 @@ dlsym(void * __restrict handle, const char * __restrict name) _rtld_error(sorry); return NULL; } - -#else /* a.out format */ - -#include <sys/types.h> -#include <nlist.h> /* XXX - Required by link.h */ -#include <dlfcn.h> -#include <link.h> -#include <stddef.h> - -/* - * For a.out, entry to the dynamic linker is via these trampolines. - * They enter the dynamic linker through the ld_entry struct that was - * passed back from the dynamic linker at startup time. - */ - -/* GCC is needed because we use its __builtin_return_address construct. */ - -#ifndef __GNUC__ -#error "GCC is needed to compile this file" -#endif - -/* - * These variables are set by code in crt0.o. For compatibility with - * old executables, they must be common, not extern. - */ -struct ld_entry *__ldso_entry; /* Entry points to dynamic linker */ -int __ldso_version; /* Dynamic linker version number */ - -int -dladdr(const void *addr, Dl_info *dlip) -{ - if (__ldso_entry == NULL || __ldso_version < LDSO_VERSION_HAS_DLADDR) - return 0; - return (__ldso_entry->dladdr)(addr, dlip); -} - -int -dlclose(void *handle) -{ - if (__ldso_entry == NULL) - return -1; - return (__ldso_entry->dlclose)(handle); -} - -const char * -dlerror(void) -{ - if (__ldso_entry == NULL) - return "Service unavailable"; - return (__ldso_entry->dlerror)(); -} - -void * -dlopen(const char *name, int mode) -{ - if (__ldso_entry == NULL) - return NULL; - return (__ldso_entry->dlopen)(name, mode); -} - -void * -dlsym(void * __restrict handle, const char * __restrict name) -{ - if (__ldso_entry == NULL) - return NULL; - if (__ldso_version >= LDSO_VERSION_HAS_DLSYM3) { - void *retaddr = __builtin_return_address(0); /* __GNUC__ only */ - return (__ldso_entry->dlsym3)(handle, name, retaddr); - } else - return (__ldso_entry->dlsym)(handle, name); -} - -#endif /* __ELF__ */ |