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| author | Peter Maydell <peter.maydell@linaro.org> | 2017-11-06 18:33:23 +0000 |
|---|---|---|
| committer | Riku Voipio <riku.voipio@linaro.org> | 2017-11-07 21:58:13 +0200 |
| commit | f2d34df3c1a88a2cf86eb0afc88c369d799ae431 (patch) | |
| tree | 6432ced47182f4566d6a6d01a9cbe247d6b867a9 /linux-user | |
| parent | a8b154a637b586441bad42259a8a9b9619cd117c (diff) | |
| download | qemu-f2d34df3c1a88a2cf86eb0afc88c369d799ae431.zip qemu-f2d34df3c1a88a2cf86eb0afc88c369d799ae431.tar.gz qemu-f2d34df3c1a88a2cf86eb0afc88c369d799ae431.tar.bz2 | |
linux-user/s390x: Mask si_addr for SIGSEGV
For s390x, the address passed to a signal handler in the
siginfo_t si_addr field is masked (in the kernel this is done in
do_sigbus() and do_sigsegv() in arch/s390/mm/fault.c). Implement
this architecture-specific oddity in linux-user.
This is one of the issues described in
https://bugs.launchpad.net/qemu/+bug/1705118
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
Diffstat (limited to 'linux-user')
| -rw-r--r-- | linux-user/main.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/linux-user/main.c b/linux-user/main.c index aa02f25..b6dd9ef 100644 --- a/linux-user/main.c +++ b/linux-user/main.c @@ -3238,6 +3238,10 @@ void cpu_loop(CPUAlphaState *env) #endif /* TARGET_ALPHA */ #ifdef TARGET_S390X + +/* s390x masks the fault address it reports in si_addr for SIGSEGV and SIGBUS */ +#define S390X_FAIL_ADDR_MASK -4096LL + void cpu_loop(CPUS390XState *env) { CPUState *cs = CPU(s390_env_get_cpu(env)); @@ -3294,7 +3298,7 @@ void cpu_loop(CPUS390XState *env) sig = TARGET_SIGSEGV; /* XXX: check env->error_code */ n = TARGET_SEGV_MAPERR; - addr = env->__excp_addr; + addr = env->__excp_addr & S390X_FAIL_ADDR_MASK; goto do_signal; case PGM_EXECUTE: case PGM_SPECIFICATION: |