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authorUlrich Drepper <drepper@gmail.com>2012-01-07 20:30:26 -0500
committerUlrich Drepper <drepper@gmail.com>2012-01-07 20:30:26 -0500
commit0269750ca60bbfdf92dbe1edfe961adfbc9a34e7 (patch)
treee148227ce15cd7abef82dff9d706d03d0b687292 /include/libc-symbols.h
parent16dd419d920dbab67ddc6e605bc0dacdc38f463c (diff)
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Remove non-ELF support
Diffstat (limited to 'include/libc-symbols.h')
-rw-r--r--include/libc-symbols.h115
1 files changed, 35 insertions, 80 deletions
diff --git a/include/libc-symbols.h b/include/libc-symbols.h
index 851efc5..e253722 100644
--- a/include/libc-symbols.h
+++ b/include/libc-symbols.h
@@ -1,6 +1,6 @@
/* Support macros for making weak and strong aliases for symbols,
and for using symbol sets and linker warnings with GNU ld.
- Copyright (C) 1995-1998,2000-2006,2008,2009,2011
+ Copyright (C) 1995-1998,2000-2006,2008,2009,2011,2012
Free Software Foundation, Inc.
This file is part of the GNU C Library.
@@ -32,7 +32,6 @@
* ASM_GLOBAL_DIRECTIVE with `.globl' or `.global'.
* ASM_TYPE_DIRECTIVE_PREFIX with `@' or `#' or whatever for .type,
or leave it undefined if there is no .type directive.
- * HAVE_ELF if using ELF, which supports weak symbols using `.weak'.
* HAVE_ASM_WEAK_DIRECTIVE if we have weak symbols using `.weak'.
* HAVE_ASM_WEAKEXT_DIRECTIVE if we have weak symbols using `.weakext'.
@@ -54,8 +53,7 @@
#include <config.h>
-/* The symbols in all the user (non-_) macros are C symbols.
- NO HAVE_ELF implies a.out. */
+/* The symbols in all the user (non-_) macros are C symbols. */
#if defined HAVE_ASM_WEAK_DIRECTIVE || defined HAVE_ASM_WEAKEXT_DIRECTIVE
# define HAVE_WEAK_SYMBOLS
@@ -222,51 +220,35 @@
/* When a reference to SYMBOL is encountered, the linker will emit a
warning message MSG. */
-#ifdef HAVE_ELF
-
/* We want the .gnu.warning.SYMBOL section to be unallocated. */
-# ifdef HAVE_ASM_PREVIOUS_DIRECTIVE
-# define __make_section_unallocated(section_string) \
+#ifdef HAVE_ASM_PREVIOUS_DIRECTIVE
+# define __make_section_unallocated(section_string) \
asm (".section " section_string "\n\t.previous");
-# elif defined HAVE_ASM_POPSECTION_DIRECTIVE
-# define __make_section_unallocated(section_string) \
+#elif defined HAVE_ASM_POPSECTION_DIRECTIVE
+# define __make_section_unallocated(section_string) \
asm (".pushsection " section_string "\n\t.popsection");
-# else
-# define __make_section_unallocated(section_string)
-# endif
+#else
+# define __make_section_unallocated(section_string)
+#endif
/* Tacking on "\n\t#" to the section name makes gcc put it's bogus
section attributes on what looks like a comment to the assembler. */
-# ifdef HAVE_SECTION_QUOTES
-# define __sec_comment "\"\n\t#\""
-# else
-# define __sec_comment "\n\t#"
-# endif
-# define link_warning(symbol, msg) \
+#ifdef HAVE_SECTION_QUOTES
+# define __sec_comment "\"\n\t#\""
+#else
+# define __sec_comment "\n\t#"
+#endif
+#define link_warning(symbol, msg) \
__make_section_unallocated (".gnu.warning." #symbol) \
static const char __evoke_link_warning_##symbol[] \
__attribute__ ((used, section (".gnu.warning." #symbol __sec_comment))) \
= msg;
-# define libc_freeres_ptr(decl) \
+#define libc_freeres_ptr(decl) \
__make_section_unallocated ("__libc_freeres_ptrs, \"aw\", %nobits") \
decl __attribute__ ((section ("__libc_freeres_ptrs" __sec_comment)))
-# define __libc_freeres_fn_section \
+#define __libc_freeres_fn_section \
__attribute__ ((section ("__libc_freeres_fn")))
-#else /* Not ELF: a.out */
-# ifdef HAVE_XCOFF
-/* XCOFF does not support .stabs.
- The native aix linker will remove the .stab and .stabstr sections
- The gnu linker will have a fatal error if there is a relocation for
- symbol in the .stab section. Silently disable this macro. */
-# define link_warning(symbol, msg)
-# else
-# define link_warning(symbol, msg) \
- asm (".stabs \"" msg "\",30,0,0,0\n\t" \
- ".stabs \"" __SYMBOL_PREFIX #symbol "\",1,0,0,0\n");
-# endif /* XCOFF */
-# define libc_freeres_ptr(decl) decl
-# define __libc_freeres_fn_section
-#endif
+
#define libc_freeres_fn(name) \
static void name (void) __attribute_used__ __libc_freeres_fn_section; \
text_set_element (__libc_subfreeres, name); \
@@ -337,77 +319,50 @@ for linking")
/* Symbol set support macros. */
-#ifdef HAVE_ELF
-
/* Make SYMBOL, which is in the text segment, an element of SET. */
-# define text_set_element(set, symbol) _elf_set_element(set, symbol)
+#define text_set_element(set, symbol) _elf_set_element(set, symbol)
/* Make SYMBOL, which is in the data segment, an element of SET. */
-# define data_set_element(set, symbol) _elf_set_element(set, symbol)
+#define data_set_element(set, symbol) _elf_set_element(set, symbol)
/* Make SYMBOL, which is in the bss segment, an element of SET. */
-# define bss_set_element(set, symbol) _elf_set_element(set, symbol)
+#define bss_set_element(set, symbol) _elf_set_element(set, symbol)
/* These are all done the same way in ELF.
There is a new section created for each set. */
-# ifdef SHARED
+#ifdef SHARED
/* When building a shared library, make the set section writable,
because it will need to be relocated at run time anyway. */
-# define _elf_set_element(set, symbol) \
+# define _elf_set_element(set, symbol) \
static const void *__elf_set_##set##_element_##symbol##__ \
__attribute__ ((used, section (#set))) = &(symbol)
-# else
-# define _elf_set_element(set, symbol) \
+#else
+# define _elf_set_element(set, symbol) \
static const void *const __elf_set_##set##_element_##symbol##__ \
__attribute__ ((used, section (#set))) = &(symbol)
-# endif
+#endif
/* Define SET as a symbol set. This may be required (it is in a.out) to
be able to use the set's contents. */
-# define symbol_set_define(set) symbol_set_declare(set)
+#define symbol_set_define(set) symbol_set_declare(set)
/* Declare SET for use in this module, if defined in another module.
In a shared library, this is always local to that shared object.
For static linking, the set might be wholly absent and so we use
weak references. */
-# define symbol_set_declare(set) \
+#define symbol_set_declare(set) \
extern char const __start_##set[] __symbol_set_attribute; \
extern char const __stop_##set[] __symbol_set_attribute;
-# ifdef SHARED
-# define __symbol_set_attribute attribute_hidden
-# else
-# define __symbol_set_attribute __attribute__ ((weak))
-# endif
+#ifdef SHARED
+# define __symbol_set_attribute attribute_hidden
+#else
+# define __symbol_set_attribute __attribute__ ((weak))
+#endif
/* Return a pointer (void *const *) to the first element of SET. */
-# define symbol_set_first_element(set) ((void *const *) (&__start_##set))
+#define symbol_set_first_element(set) ((void *const *) (&__start_##set))
/* Return true iff PTR (a void *const *) has been incremented
past the last element in SET. */
-# define symbol_set_end_p(set, ptr) ((ptr) >= (void *const *) &__stop_##set)
-
-#else /* Not ELF: a.out. */
-
-# ifdef HAVE_XCOFF
-/* XCOFF does not support .stabs.
- The native aix linker will remove the .stab and .stabstr sections
- The gnu linker will have a fatal error if there is a relocation for
- symbol in the .stab section. Silently disable these macros. */
-# define text_set_element(set, symbol)
-# define data_set_element(set, symbol)
-# define bss_set_element(set, symbol)
-# else
-# define text_set_element(set, symbol) \
- asm (".stabs \"" __SYMBOL_PREFIX #set "\",23,0,0," __SYMBOL_PREFIX #symbol)
-# define data_set_element(set, symbol) \
- asm (".stabs \"" __SYMBOL_PREFIX #set "\",25,0,0," __SYMBOL_PREFIX #symbol)
-# define bss_set_element(set, symbol) ?error Must use initialized data.
-# endif /* XCOFF */
-# define symbol_set_define(set) void *const (set)[1];
-# define symbol_set_declare(set) extern void *const (set)[1];
-
-# define symbol_set_first_element(set) &(set)[1]
-# define symbol_set_end_p(set, ptr) (*(ptr) == 0)
-
-#endif /* ELF. */
+#define symbol_set_end_p(set, ptr) ((ptr) >= (void *const *) &__stop_##set)
#if DO_VERSIONING
# define symbol_version(real, name, version) \