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Improve CFAsmMacros platform checking #1692

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merged 1 commit into from
Sep 13, 2018
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Improve CFAsmMacros platform checking #1692

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8 changes: 7 additions & 1 deletion CoreFoundation/Base.subproj/CFAsmMacros.h
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Original file line number Diff line number Diff line change
Expand Up @@ -14,8 +14,14 @@
#define CONCAT_EXPANDED(a,b) CONCAT(a,b)
#define _C_LABEL(name) CONCAT_EXPANDED(__USER_LABEL_PREFIX__,name)

#if defined(__GNU__) || defined(__GNUC__) || defined(__ANDROID__) || defined(__FreeBSD__)
/* Use .note.GNU-stack to explicitly indicate a non-exec stack, b/c of bad */
/* default behaviour when translating handwritten assembly files (needed on */
/* GNU/* platforms, Android and FreeBSD, as tests have shown). */
/* Platform tests are documented at http://git.savannah.gnu.org/gitweb/?p=libffcall.git;a=blob;f=porting-tools/execstack/README */
#if (defined(__GNUC__) || defined (__llvm__) || defined (__clang__)) && defined(__ELF__) && (defined (__linux__) || defined (__linux) || defined (__gnu_linux__) || defined(__FreeBSD__) || defined (__FreeBSD_kernel__))
#define NO_EXEC_STACK_DIRECTIVE .section .note.GNU-stack,"",%progbits
#elsif defined(__SUNPRO_C) && defined(__linux__)
#define NO_EXEC_STACK_DIRECTIVE .section ".note.GNU-stack"
#else
#define NO_EXEC_STACK_DIRECTIVE
#endif
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