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linux-user: Introduce host_sigcontext

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Do not directly access ucontext_t as the third signal parameter.
This is preparation for a sparc64 fix.

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>
This commit is contained in:
Richard Henderson 2022-02-08 09:40:00 +03:00
parent c8c89a6a30
commit 9940799bde
12 changed files with 80 additions and 47 deletions
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11
linux-user/include/host/i386/host-signal.h
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@ -11,22 +11,25 @@
#ifndef I386_HOST_SIGNAL_H
#define I386_HOST_SIGNAL_H
static inline uintptr_t host_signal_pc(ucontext_t *uc)
/* The third argument to a SA_SIGINFO handler is ucontext_t. */
typedef ucontext_t host_sigcontext;
static inline uintptr_t host_signal_pc(host_sigcontext *uc)
{
return uc->uc_mcontext.gregs[REG_EIP];
}
static inline void host_signal_set_pc(ucontext_t *uc, uintptr_t pc)
static inline void host_signal_set_pc(host_sigcontext *uc, uintptr_t pc)
{
uc->uc_mcontext.gregs[REG_EIP] = pc;
}
static inline void *host_signal_mask(ucontext_t *uc)
static inline void *host_signal_mask(host_sigcontext *uc)
{
return &uc->uc_sigmask;
}
static inline bool host_signal_write(siginfo_t *info, ucontext_t *uc)
static inline bool host_signal_write(siginfo_t *info, host_sigcontext *uc)
{
return uc->uc_mcontext.gregs[REG_TRAPNO] == 0xe
&& (uc->uc_mcontext.gregs[REG_ERR] & 0x2);