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linux-user/alpha: Implement setup_sigtramp

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Create and record the two signal trampolines.
Use them when the guest does not use ka_restorer.

Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210929130553.121567-7-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
This commit is contained in:
Richard Henderson 2021-09-29 09:05:33 -04:00 • committed by Laurent Vivier
parent b5d66e0dd8
commit dd55f1c8b2
2 changed files with 21 additions and 14 deletions
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linux-user/alpha/target_signal.h
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@ -93,6 +93,7 @@ typedef struct target_sigaltstack {
#define TARGET_ARCH_HAS_SETUP_FRAME
#define TARGET_ARCH_HAS_KA_RESTORER
#define TARGET_ARCH_HAS_SIGTRAMP_PAGE 1
/* bit-flags */
#define TARGET_SS_AUTODISARM (1U << 31) /* disable sas during sighandling */