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-rw-r--r--include/linux/compiler-gcc.h32
1 files changed, 16 insertions, 16 deletions
diff --git a/include/linux/compiler-gcc.h b/include/linux/compiler-gcc.h
index 179375b2d862..17cbe3cffc0e 100644
--- a/include/linux/compiler-gcc.h
+++ b/include/linux/compiler-gcc.h
@@ -128,6 +128,22 @@
128#define __always_unused __attribute__((unused)) 128#define __always_unused __attribute__((unused))
129#define __mode(x) __attribute__((mode(x))) 129#define __mode(x) __attribute__((mode(x)))
130 130
131#ifdef CONFIG_STACK_VALIDATION
132#define annotate_unreachable() ({ \
133 asm("%c0:\n\t" \
134 ".pushsection .discard.unreachable\n\t" \
135 ".long %c0b - .\n\t" \
136 ".popsection\n\t" : : "i" (__LINE__)); \
137})
138#define ASM_UNREACHABLE \
139 "999:\n\t" \
140 ".pushsection .discard.unreachable\n\t" \
141 ".long 999b - .\n\t" \
142 ".popsection\n\t"
143#else
144#define annotate_unreachable()
145#endif
146
131/* gcc version specific checks */ 147/* gcc version specific checks */
132 148
133#if GCC_VERSION < 30200 149#if GCC_VERSION < 30200
@@ -201,22 +217,6 @@
201#endif 217#endif
202#endif 218#endif
203 219
204#ifdef CONFIG_STACK_VALIDATION
205#define annotate_unreachable() ({ \
206 asm("%c0:\n\t" \
207 ".pushsection .discard.unreachable\n\t" \
208 ".long %c0b - .\n\t" \
209 ".popsection\n\t" : : "i" (__LINE__)); \
210})
211#define ASM_UNREACHABLE \
212 "999:\n\t" \
213 ".pushsection .discard.unreachable\n\t" \
214 ".long 999b - .\n\t" \
215 ".popsection\n\t"
216#else
217#define annotate_unreachable()
218#endif
219
220/* 220/*
221 * Mark a position in code as unreachable. This can be used to 221 * Mark a position in code as unreachable. This can be used to
222 * suppress control flow warnings after asm blocks that transfer 222 * suppress control flow warnings after asm blocks that transfer