diff options
| author | Richard Henderson <richard.henderson@linaro.org> | 2021-12-27 07:01:24 -0800 |
|---|---|---|
| committer | Laurent Vivier <laurent@vivier.eu> | 2022-01-06 11:40:52 +0100 |
| commit | 6e8dcacd0840b3c38e7ec664bb9adbccc2108fdd (patch) | |
| tree | a2e419cce74e240a769a931b23a2ed9878177357 /linux-user/generic | |
| parent | 220717a6f46a99031a5b1af964bbf4dec1310440 (diff) | |
linux-user: Add code for PR_GET/SET_UNALIGN
This requires extra work for each target, but adds the
common syscall code, and the necessary flag in CPUState.
Reviewed-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20211227150127.2659293-4-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Diffstat (limited to 'linux-user/generic')
| -rw-r--r-- | linux-user/generic/target_prctl_unalign.h | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/linux-user/generic/target_prctl_unalign.h b/linux-user/generic/target_prctl_unalign.h new file mode 100644 index 0000000000..bc3b83af2a --- /dev/null +++ b/linux-user/generic/target_prctl_unalign.h @@ -0,0 +1,27 @@ +/* + * Generic prctl unalign functions for linux-user + * + * SPDX-License-Identifier: GPL-2.0-or-later + */ +#ifndef GENERIC_TARGET_PRCTL_UNALIGN_H +#define GENERIC_TARGET_PRCTL_UNALIGN_H + +static abi_long do_prctl_get_unalign(CPUArchState *env, target_long arg2) +{ + CPUState *cs = env_cpu(env); + uint32_t res = PR_UNALIGN_NOPRINT; + if (cs->prctl_unalign_sigbus) { + res |= PR_UNALIGN_SIGBUS; + } + return put_user_u32(res, arg2); +} +#define do_prctl_get_unalign do_prctl_get_unalign + +static abi_long do_prctl_set_unalign(CPUArchState *env, target_long arg2) +{ + env_cpu(env)->prctl_unalign_sigbus = arg2 & PR_UNALIGN_SIGBUS; + return 0; +} +#define do_prctl_set_unalign do_prctl_set_unalign + +#endif /* GENERIC_TARGET_PRCTL_UNALIGN_H */ |