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rseq/selftests: add s390 support

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Implement support for s390 in the rseq selftests, in order to sanity
check the recently enabled rseq syscall. The Implementation covers both
64-bit and 31-bit mode.

Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Vasily Gorbik
2018-07-09 17:07:48 +02:00
committed by Martin Schwidefsky
parent 26f843848b
commit 4c14d1ce17
3 changed files with 539 additions and 0 deletions
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24
tools/testing/selftests/rseq/param_test.c
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@@ -90,6 +90,30 @@ unsigned int yield_mod_cnt, nr_abort;
#error "Unsupported architecture"
#endif
#elif defined(__s390__)
#define RSEQ_INJECT_INPUT \
, [loop_cnt_1]"m"(loop_cnt[1]) \
, [loop_cnt_2]"m"(loop_cnt[2]) \
, [loop_cnt_3]"m"(loop_cnt[3]) \
, [loop_cnt_4]"m"(loop_cnt[4]) \
, [loop_cnt_5]"m"(loop_cnt[5]) \
, [loop_cnt_6]"m"(loop_cnt[6])
#define INJECT_ASM_REG "r12"
#define RSEQ_INJECT_CLOBBER \
, INJECT_ASM_REG
#define RSEQ_INJECT_ASM(n) \
"l %%" INJECT_ASM_REG ", %[loop_cnt_" #n "]\n\t" \
"ltr %%" INJECT_ASM_REG ", %%" INJECT_ASM_REG "\n\t" \
"je 333f\n\t" \
"222:\n\t" \
"ahi %%" INJECT_ASM_REG ", -1\n\t" \
"jnz 222b\n\t" \
"333:\n\t"
#elif defined(__ARMEL__)
#define RSEQ_INJECT_INPUT \