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linux-user/sparc: Implement setup_sigtramp

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

Acked-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210929130553.121567-24-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
This commit is contained in:
Richard Henderson 2021-09-29 09:05:50 -04:00 • committed by Laurent Vivier
parent b9188f9ccc
commit 3f7685eaf9
2 changed files with 30 additions and 14 deletions
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4
linux-user/sparc/target_signal.h
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@ -69,6 +69,10 @@ typedef struct target_sigaltstack {
#ifdef TARGET_ABI32
#define TARGET_ARCH_HAS_SETUP_FRAME
#define TARGET_ARCH_HAS_SIGTRAMP_PAGE 1
#else
/* For sparc64, use of KA_RESTORER is mandatory. */
#define TARGET_ARCH_HAS_SIGTRAMP_PAGE 0
#endif
/* bit-flags */