diff options
Diffstat (limited to 'lib/sanitizer_common/sanitizer_linux_x86_64.S')
| -rw-r--r-- | lib/sanitizer_common/sanitizer_linux_x86_64.S | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/lib/sanitizer_common/sanitizer_linux_x86_64.S b/lib/sanitizer_common/sanitizer_linux_x86_64.S new file mode 100644 index 000000000000..8ff909542b68 --- /dev/null +++ b/lib/sanitizer_common/sanitizer_linux_x86_64.S @@ -0,0 +1,25 @@ +// This file is dual licensed under the MIT and the University of Illinois Open +// Source Licenses. See LICENSE.TXT for details. + +// Avoid being marked as needing an executable stack: +#if defined(__linux__) && defined(__ELF__) +.section .note.GNU-stack,"",%progbits +#endif + +// Further contents are x86_64-only: +#if defined(__linux__) && defined(__x86_64__) + +#include "../builtins/assembly.h" + +// If the "naked" function attribute were supported for x86 we could +// do this via inline asm. +.text +.balign 4 +DEFINE_COMPILERRT_FUNCTION(internal_sigreturn) + mov $0xf, %eax // 0xf == SYS_rt_sigreturn + mov %rcx, %r10 + syscall + ret // Won't normally reach here. +END_COMPILERRT_FUNCTION(internal_sigreturn) + +#endif // defined(__linux__) && defined(__x86_64__) |