Signed-off-by: Timothy Edward Baldwin <t.e.baldwi...@members.leeds.ac.uk>
---
linux-user/m68k/syscall.h | 2 ++
linux-user/main.c | 24 +++++++++++++++---------
linux-user/signal.c | 20 ++++++++------------
3 files changed, 25 insertions(+), 21 deletions(-)
diff --git a/linux-user/m68k/syscall.h b/linux-user/m68k/syscall.h
index 9218493..c923e56 100644
--- a/linux-user/m68k/syscall.h
+++ b/linux-user/m68k/syscall.h
@@ -23,3 +23,5 @@ struct target_pt_regs {
#define TARGET_MLOCKALL_MCL_FUTURE 2
void do_m68k_simcall(CPUM68KState *, int);
+
+#define TARGET_USE_ERESTARTSYS 1
diff --git a/linux-user/main.c b/linux-user/main.c
index b052e17..0863945 100644
--- a/linux-user/main.c
+++ b/linux-user/main.c
@@ -3054,18 +3054,24 @@ void cpu_loop(CPUM68KState *env)
break;
case EXCP_TRAP0:
{
+ abi_long ret;
ts->sim_syscalls = 0;
n = env->dregs[0];
env->pc += 2;
- env->dregs[0] = do_syscall(env,
- n,
- env->dregs[1],
- env->dregs[2],
- env->dregs[3],
- env->dregs[4],
- env->dregs[5],
- env->aregs[0],
- 0, 0);
+ ret = do_syscall(env,
+ n,
+ env->dregs[1],
+ env->dregs[2],
+ env->dregs[3],
+ env->dregs[4],
+ env->dregs[5],
+ env->aregs[0],
+ 0, 0);
+ if (ret == -TARGET_ERESTARTSYS) {
+ env->pc -= 2;
+ } else if (ret != -TARGET_QEMU_ESIGRETURN) {
+ env->dregs[0] = ret;
+ }
}
break;
case EXCP_INTERRUPT:
diff --git a/linux-user/signal.c b/linux-user/signal.c
index fc37f3b..3bae33b 100644
--- a/linux-user/signal.c
+++ b/linux-user/signal.c
@@ -5000,19 +5000,18 @@ static void setup_sigcontext(struct target_sigcontext
*sc, CPUM68KState *env,
}
static void
-restore_sigcontext(CPUM68KState *env, struct target_sigcontext *sc, int *pd0)
+restore_sigcontext(CPUM68KState *env, struct target_sigcontext *sc)
{
int temp;
__get_user(env->aregs[7], &sc->sc_usp);
+ __get_user(env->dregs[0], &sc->sc_d0);
__get_user(env->dregs[1], &sc->sc_d1);
__get_user(env->aregs[0], &sc->sc_a0);
__get_user(env->aregs[1], &sc->sc_a1);
__get_user(env->pc, &sc->sc_pc);
__get_user(temp, &sc->sc_sr);
env->sr = (env->sr & 0xff00) | (temp & 0xff);
-
- *pd0 = tswapl(sc->sc_d0);
}
/*
@@ -5110,8 +5109,7 @@ static inline int target_rt_setup_ucontext(struct
target_ucontext *uc,
}
static inline int target_rt_restore_ucontext(CPUM68KState *env,
- struct target_ucontext *uc,
- int *pd0)
+ struct target_ucontext *uc)
{
int temp;
target_greg_t *gregs = uc->tuc_mcontext.gregs;
@@ -5141,7 +5139,6 @@ static inline int target_rt_restore_ucontext(CPUM68KState
*env,
__get_user(temp, &gregs[17]);
env->sr = (env->sr & 0xff00) | (temp & 0xff);
- *pd0 = env->dregs[0];
return 0;
badframe:
@@ -5227,7 +5224,7 @@ long do_sigreturn(CPUM68KState *env)
abi_ulong frame_addr = env->aregs[7] - 4;
target_sigset_t target_set;
sigset_t set;
- int d0, i;
+ int i;
if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1))
goto badframe;
@@ -5245,10 +5242,10 @@ long do_sigreturn(CPUM68KState *env)
/* restore registers */
- restore_sigcontext(env, &frame->sc, &d0);
+ restore_sigcontext(env, &frame->sc);
unlock_user_struct(frame, frame_addr, 0);
- return d0;
+ return -TARGET_QEMU_ESIGRETURN;
badframe:
force_sig(TARGET_SIGSEGV);
@@ -5261,7 +5258,6 @@ long do_rt_sigreturn(CPUM68KState *env)
abi_ulong frame_addr = env->aregs[7] - 4;
target_sigset_t target_set;
sigset_t set;
- int d0;
if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1))
goto badframe;
@@ -5271,7 +5267,7 @@ long do_rt_sigreturn(CPUM68KState *env)
/* restore registers */
- if (target_rt_restore_ucontext(env, &frame->uc, &d0))
+ if (target_rt_restore_ucontext(env, &frame->uc))
goto badframe;
if (do_sigaltstack(frame_addr +
@@ -5280,7 +5276,7 @@ long do_rt_sigreturn(CPUM68KState *env)
goto badframe;
unlock_user_struct(frame, frame_addr, 0);
- return d0;
+ return -TARGET_QEMU_ESIGRETURN;
badframe:
unlock_user_struct(frame, frame_addr, 0);
--
2.1.4
