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s390/bug: add entry size to the __bug_table section

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Change the __EMIT_BUG inline assembly to emit mergeable __bug_table
entries with type @progbits and specify the size of each entry.
The entry size is encoded sh_entsize field of the section definition,
it allows to identify which struct bug_entry to use to decode the
entries. This will be needed for the objtool support.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Martin Schwidefsky 2019-01-17 09:29:15 +01:00
parent bf72630130
commit e21f8baf8d
1 changed files with 12 additions and 12 deletions
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24
arch/s390/include/asm/bug.h
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@ -15,7 +15,7 @@
".section .rodata.str,\"aMS\",@progbits,1\n" \
"2: .asciz \""__FILE__"\"\n" \
".previous\n" \
".section __bug_table,\"aw\"\n" \
".section __bug_table,\"awM\",@progbits,%2\n" \
"3: .long 1b-3b,2b-3b\n" \
" .short %0,%1\n" \
" .org 3b+%2\n" \
@ -27,17 +27,17 @@
#else /* CONFIG_DEBUG_BUGVERBOSE */
#define __EMIT_BUG(x) do { \
asm volatile( \
"0: j 0b+2\n" \
"1:\n" \
".section __bug_table,\"aw\"\n" \
"2: .long 1b-2b\n" \
" .short %0\n" \
" .org 2b+%1\n" \
".previous\n" \
: : "i" (x), \
"i" (sizeof(struct bug_entry))); \
#define __EMIT_BUG(x) do { \
asm volatile( \
"0: j 0b+2\n" \
"1:\n" \
".section __bug_table,\"awM\",@progbits,%1\n" \
"2: .long 1b-2b\n" \
" .short %0\n" \
" .org 2b+%1\n" \
".previous\n" \
: : "i" (x), \
"i" (sizeof(struct bug_entry))); \
} while (0)
#endif /* CONFIG_DEBUG_BUGVERBOSE */