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linux-user/alpha: Fix sigsuspend for big-endian hosts

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On alpha, the sigset argument for sigsuspend is in a register.
When we drop that into memory that happens in host-endianness,
but target_to_host_old_sigset will treat it as target-endianness.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20220315084308.433109-2-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
This commit is contained in:
Richard Henderson 2022-03-15 01:43:04 -07:00 committed by Laurent Vivier
parent 80f0fe3a85
commit 7fb5ef350b
1 changed files with 2 additions and 1 deletions
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linux-user/syscall.c
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@ -9559,7 +9559,8 @@ static abi_long do_syscall1(void *cpu_env, int num, abi_long arg1,
{
TaskState *ts = cpu->opaque;
#if defined(TARGET_ALPHA)
abi_ulong mask = arg1;
/* target_to_host_old_sigset will bswap back */
abi_ulong mask = tswapal(arg1);
target_to_host_old_sigset(&ts->sigsuspend_mask, &mask);
#else
if (!(p = lock_user(VERIFY_READ, arg1, sizeof(target_sigset_t), 1)))