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https://sourceware.org/git/glibc.git
synced 2025-10-23 02:12:24 +03:00
Remove non-ELF support
This commit is contained in:
Ulrich Drepper
@@ -1,6 +1,6 @@
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/* Support macros for making weak and strong aliases for symbols,
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and for using symbol sets and linker warnings with GNU ld.
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Copyright (C) 1995-1998,2000-2006,2008,2009,2011
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Copyright (C) 1995-1998,2000-2006,2008,2009,2011,2012
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Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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@@ -32,7 +32,6 @@
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* ASM_GLOBAL_DIRECTIVE with `.globl' or `.global'.
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* ASM_TYPE_DIRECTIVE_PREFIX with `@' or `#' or whatever for .type,
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or leave it undefined if there is no .type directive.
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* HAVE_ELF if using ELF, which supports weak symbols using `.weak'.
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* HAVE_ASM_WEAK_DIRECTIVE if we have weak symbols using `.weak'.
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* HAVE_ASM_WEAKEXT_DIRECTIVE if we have weak symbols using `.weakext'.
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@@ -54,8 +53,7 @@
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#include <config.h>
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/* The symbols in all the user (non-_) macros are C symbols.
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NO HAVE_ELF implies a.out. */
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/* The symbols in all the user (non-_) macros are C symbols. */
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#if defined HAVE_ASM_WEAK_DIRECTIVE || defined HAVE_ASM_WEAKEXT_DIRECTIVE
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# define HAVE_WEAK_SYMBOLS
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@@ -222,51 +220,35 @@
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/* When a reference to SYMBOL is encountered, the linker will emit a
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warning message MSG. */
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#ifdef HAVE_ELF
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/* We want the .gnu.warning.SYMBOL section to be unallocated. */
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# ifdef HAVE_ASM_PREVIOUS_DIRECTIVE
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# define __make_section_unallocated(section_string) \
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#ifdef HAVE_ASM_PREVIOUS_DIRECTIVE
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# define __make_section_unallocated(section_string) \
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asm (".section " section_string "\n\t.previous");
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# elif defined HAVE_ASM_POPSECTION_DIRECTIVE
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# define __make_section_unallocated(section_string) \
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#elif defined HAVE_ASM_POPSECTION_DIRECTIVE
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# define __make_section_unallocated(section_string) \
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asm (".pushsection " section_string "\n\t.popsection");
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# else
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# define __make_section_unallocated(section_string)
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# endif
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#else
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# define __make_section_unallocated(section_string)
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#endif
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/* Tacking on "\n\t#" to the section name makes gcc put it's bogus
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section attributes on what looks like a comment to the assembler. */
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# ifdef HAVE_SECTION_QUOTES
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# define __sec_comment "\"\n\t#\""
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# else
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# define __sec_comment "\n\t#"
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# endif
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# define link_warning(symbol, msg) \
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#ifdef HAVE_SECTION_QUOTES
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# define __sec_comment "\"\n\t#\""
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#else
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# define __sec_comment "\n\t#"
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#endif
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#define link_warning(symbol, msg) \
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__make_section_unallocated (".gnu.warning." #symbol) \
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static const char __evoke_link_warning_##symbol[] \
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__attribute__ ((used, section (".gnu.warning." #symbol __sec_comment))) \
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= msg;
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# define libc_freeres_ptr(decl) \
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#define libc_freeres_ptr(decl) \
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__make_section_unallocated ("__libc_freeres_ptrs, \"aw\", %nobits") \
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decl __attribute__ ((section ("__libc_freeres_ptrs" __sec_comment)))
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# define __libc_freeres_fn_section \
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#define __libc_freeres_fn_section \
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__attribute__ ((section ("__libc_freeres_fn")))
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#else /* Not ELF: a.out */
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# ifdef HAVE_XCOFF
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/* XCOFF does not support .stabs.
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The native aix linker will remove the .stab and .stabstr sections
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The gnu linker will have a fatal error if there is a relocation for
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symbol in the .stab section. Silently disable this macro. */
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# define link_warning(symbol, msg)
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# else
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# define link_warning(symbol, msg) \
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asm (".stabs \"" msg "\",30,0,0,0\n\t" \
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".stabs \"" __SYMBOL_PREFIX #symbol "\",1,0,0,0\n");
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# endif /* XCOFF */
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# define libc_freeres_ptr(decl) decl
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# define __libc_freeres_fn_section
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#endif
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#define libc_freeres_fn(name) \
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static void name (void) __attribute_used__ __libc_freeres_fn_section; \
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text_set_element (__libc_subfreeres, name); \
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@@ -337,77 +319,50 @@ for linking")
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/* Symbol set support macros. */
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#ifdef HAVE_ELF
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/* Make SYMBOL, which is in the text segment, an element of SET. */
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# define text_set_element(set, symbol) _elf_set_element(set, symbol)
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#define text_set_element(set, symbol) _elf_set_element(set, symbol)
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/* Make SYMBOL, which is in the data segment, an element of SET. */
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# define data_set_element(set, symbol) _elf_set_element(set, symbol)
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#define data_set_element(set, symbol) _elf_set_element(set, symbol)
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/* Make SYMBOL, which is in the bss segment, an element of SET. */
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# define bss_set_element(set, symbol) _elf_set_element(set, symbol)
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#define bss_set_element(set, symbol) _elf_set_element(set, symbol)
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/* These are all done the same way in ELF.
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There is a new section created for each set. */
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# ifdef SHARED
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#ifdef SHARED
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/* When building a shared library, make the set section writable,
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because it will need to be relocated at run time anyway. */
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# define _elf_set_element(set, symbol) \
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# define _elf_set_element(set, symbol) \
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static const void *__elf_set_##set##_element_##symbol##__ \
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__attribute__ ((used, section (#set))) = &(symbol)
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# else
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# define _elf_set_element(set, symbol) \
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#else
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# define _elf_set_element(set, symbol) \
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static const void *const __elf_set_##set##_element_##symbol##__ \
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__attribute__ ((used, section (#set))) = &(symbol)
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# endif
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#endif
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/* Define SET as a symbol set. This may be required (it is in a.out) to
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be able to use the set's contents. */
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# define symbol_set_define(set) symbol_set_declare(set)
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#define symbol_set_define(set) symbol_set_declare(set)
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/* Declare SET for use in this module, if defined in another module.
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In a shared library, this is always local to that shared object.
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For static linking, the set might be wholly absent and so we use
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weak references. */
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# define symbol_set_declare(set) \
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#define symbol_set_declare(set) \
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extern char const __start_##set[] __symbol_set_attribute; \
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extern char const __stop_##set[] __symbol_set_attribute;
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# ifdef SHARED
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# define __symbol_set_attribute attribute_hidden
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# else
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# define __symbol_set_attribute __attribute__ ((weak))
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# endif
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#ifdef SHARED
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# define __symbol_set_attribute attribute_hidden
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#else
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# define __symbol_set_attribute __attribute__ ((weak))
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#endif
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/* Return a pointer (void *const *) to the first element of SET. */
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# define symbol_set_first_element(set) ((void *const *) (&__start_##set))
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#define symbol_set_first_element(set) ((void *const *) (&__start_##set))
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/* Return true iff PTR (a void *const *) has been incremented
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past the last element in SET. */
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# define symbol_set_end_p(set, ptr) ((ptr) >= (void *const *) &__stop_##set)
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#else /* Not ELF: a.out. */
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# ifdef HAVE_XCOFF
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/* XCOFF does not support .stabs.
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The native aix linker will remove the .stab and .stabstr sections
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The gnu linker will have a fatal error if there is a relocation for
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symbol in the .stab section. Silently disable these macros. */
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# define text_set_element(set, symbol)
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# define data_set_element(set, symbol)
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# define bss_set_element(set, symbol)
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# else
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# define text_set_element(set, symbol) \
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asm (".stabs \"" __SYMBOL_PREFIX #set "\",23,0,0," __SYMBOL_PREFIX #symbol)
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# define data_set_element(set, symbol) \
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asm (".stabs \"" __SYMBOL_PREFIX #set "\",25,0,0," __SYMBOL_PREFIX #symbol)
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# define bss_set_element(set, symbol) ?error Must use initialized data.
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# endif /* XCOFF */
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# define symbol_set_define(set) void *const (set)[1];
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# define symbol_set_declare(set) extern void *const (set)[1];
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# define symbol_set_first_element(set) &(set)[1]
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# define symbol_set_end_p(set, ptr) (*(ptr) == 0)
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#endif /* ELF. */
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#define symbol_set_end_p(set, ptr) ((ptr) >= (void *const *) &__stop_##set)
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#if DO_VERSIONING
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# define symbol_version(real, name, version) \
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@@ -1,5 +1,5 @@
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/* Macros for managing ABI-compatibility definitions using ELF symbol versions.
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Copyright (C) 2000, 2002, 2006 Free Software Foundation, Inc.
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Copyright (C) 2000, 2002, 2006, 2012 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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@@ -20,13 +20,13 @@
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#ifndef _SHLIB_COMPAT_H
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#define _SHLIB_COMPAT_H 1
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#if defined HAVE_ELF && defined DO_VERSIONING
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#if defined DO_VERSIONING
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/* Since there is just one set of .d files generated, we need to
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include this unconditionally to have the dependency noticed properly. */
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#include <abi-versions.h> /* header generated by abi-versions.awk */
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#endif
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#if defined HAVE_ELF && defined SHARED && defined DO_VERSIONING
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#if defined SHARED && defined DO_VERSIONING
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/* The file abi-versions.h (generated by scripts/abi-versions.awk) defines
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symbols like `ABI_libm_GLIBC_2_0' for each version set in the source
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