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linux-user: define TARGET_ARCH_HAS_KA_RESTORER

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Sparc as an extended sigaction structure containing
the field ka_restorer used in place of sa_restorer.

Define TARGET_ARCH_HAS_KA_RESTORER and use it
with sparc.

Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20180402102453.9883-2-laurent@vivier.eu>
This commit is contained in:
Laurent Vivier 2018-04-02 12:24:52 +02:00
parent 95a29a4e3e
commit 5de154e82f
3 changed files with 11 additions and 4 deletions
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4
linux-user/signal.c
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@ -2920,8 +2920,8 @@ static void setup_frame(int sig, struct target_sigaction *ka,
env->pc = ka->_sa_handler;
env->npc = (env->pc + 4);
/* 5. return to kernel instructions */
if (ka->sa_restorer) {
env->regwptr[UREG_I7] = ka->sa_restorer;
if (ka->ka_restorer) {
env->regwptr[UREG_I7] = ka->ka_restorer;
} else {
uint32_t val32;

7
linux-user/syscall.c
View File

@ -8699,6 +8699,9 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
target_siginitset(&act.sa_mask, old_act->sa_mask);
act.sa_flags = old_act->sa_flags;
act.sa_restorer = old_act->sa_restorer;
#ifdef TARGET_ARCH_HAS_KA_RESTORER
act.ka_restorer = 0;
#endif
unlock_user_struct(old_act, arg2, 0);
pact = &act;
} else {
@ -8773,8 +8776,8 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
if (!lock_user_struct(VERIFY_READ, act, arg2, 1)) {
goto efault;
}
#ifdef TARGET_SPARC
act->sa_restorer = restorer;
#ifdef TARGET_ARCH_HAS_KA_RESTORER
act->ka_restorer = restorer;
#endif
} else {
act = NULL;

4
linux-user/syscall_defs.h
View File

@ -435,6 +435,7 @@ int do_sigaction(int sig, const struct target_sigaction *act,
#define TARGET_SA_NODEFER 0x20u
#define TARGET_SA_RESETHAND 4u
#define TARGET_ARCH_HAS_SA_RESTORER 1
#define TARGET_ARCH_HAS_KA_RESTORER 1
#elif defined(TARGET_MIPS)
#define TARGET_SA_NOCLDSTOP 0x00000001
#define TARGET_SA_NOCLDWAIT 0x00010000
@ -742,6 +743,9 @@ struct target_sigaction {
abi_ulong sa_restorer;
#endif
target_sigset_t sa_mask;
#ifdef TARGET_ARCH_HAS_KA_RESTORER
abi_ulong ka_restorer;
#endif
};
#endif