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Subject[RFC PATCH 02/21] stackvalidate: Add C version of STACKVALIDATE_IGNORE_INSN
Date
Add a C inline asm string version of the STACKVALIDATE_IGNORE_INSN macro
which tells stackvalidate to ignore the subsequent instruction.

Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
---
arch/x86/include/asm/stackvalidate.h | 9 +++++++++
1 file changed, 9 insertions(+)

diff --git a/arch/x86/include/asm/stackvalidate.h b/arch/x86/include/asm/stackvalidate.h
index 2d23c23..dac935c 100644
--- a/arch/x86/include/asm/stackvalidate.h
+++ b/arch/x86/include/asm/stackvalidate.h
@@ -23,6 +23,15 @@
.endif
.endm

+#else /* !__ASSEMBLY__ */
+
+#define STACKVALIDATE_IGNORE_INSN \
+ ".Ltemp" __stringify(__LINE__) ":;" \
+ ".pushsection __stackvalidate_ignore_insn, \"a\";" \
+ _ASM_ALIGN ";" \
+ ".long .Ltemp" __stringify(__LINE__) " - .;" \
+ ".popsection;"
+
#endif /* __ASSEMBLY__ */

#endif /* _ASM_X86_STACKVALIDATE_H */
--
2.1.0


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