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Improved automatic start/stop
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parent
667f008cd4
commit
301a62f90a
8 changed files with 229 additions and 91 deletions
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@ -53,4 +53,49 @@ typedef enum _snd_set_mode {
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size_t page_align(size_t size);
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size_t page_size(void);
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#define HAVE_GNU_LD
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#define HAVE_ELF
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#define HAVE_ASM_PREVIOUS_DIRECTIVE
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/* Stolen from libc-symbols.h in GNU glibc */
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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_GNU_LD
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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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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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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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/* 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 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__ ((section (".gnu.warning." #symbol "\"\n\t#\""))) = msg;
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# else
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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__ ((section (".gnu.warning." #symbol "\n\t#"))) = msg;
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# endif
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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
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#else
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/* We will never be heard; they will all die horribly. */
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# define link_warning(symbol, msg)
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#endif
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#endif
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