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authorLaurent Vivier <laurent@vivier.eu>2017-09-14 18:35:05 +0200
committerRiku Voipio <riku.voipio@linaro.org>2017-10-16 16:00:56 +0300
commitee46a46b02e58d82ba27943746f6e7e1ffc1a173 (patch)
treea27a6c814a00e3b1bc63fc22ecbc8e525a5a1e84 /linux-user
parent5f9cee46cd4ec4600e1a2fdcca20adcf30348f9e (diff)
target/m68k,linux-user: manage FP registers in ucontext
Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
Diffstat (limited to 'linux-user')
-rw-r--r--linux-user/signal.c43
1 files changed, 43 insertions, 0 deletions
diff --git a/linux-user/signal.c b/linux-user/signal.c
index cc0c3fcee9..7a238aaea1 100644
--- a/linux-user/signal.c
+++ b/linux-user/signal.c
@@ -5704,6 +5704,24 @@ give_sigsegv:
force_sigsegv(sig);
}
+static inline void target_rt_save_fpu_state(struct target_ucontext *uc,
+ CPUM68KState *env)
+{
+ int i;
+ target_fpregset_t *fpregs = &uc->tuc_mcontext.fpregs;
+
+ __put_user(env->fpcr, &fpregs->f_fpcntl[0]);
+ __put_user(env->fpsr, &fpregs->f_fpcntl[1]);
+ /* fpiar is not emulated */
+
+ for (i = 0; i < 8; i++) {
+ uint32_t high = env->fregs[i].d.high << 16;
+ __put_user(high, &fpregs->f_fpregs[i * 3]);
+ __put_user(env->fregs[i].d.low,
+ (uint64_t *)&fpregs->f_fpregs[i * 3 + 1]);
+ }
+}
+
static inline int target_rt_setup_ucontext(struct target_ucontext *uc,
CPUM68KState *env)
{
@@ -5730,9 +5748,32 @@ static inline int target_rt_setup_ucontext(struct target_ucontext *uc,
__put_user(env->pc, &gregs[16]);
__put_user(sr, &gregs[17]);
+ target_rt_save_fpu_state(uc, env);
+
return 0;
}
+static inline void target_rt_restore_fpu_state(CPUM68KState *env,
+ struct target_ucontext *uc)
+{
+ int i;
+ target_fpregset_t *fpregs = &uc->tuc_mcontext.fpregs;
+ uint32_t fpcr;
+
+ __get_user(fpcr, &fpregs->f_fpcntl[0]);
+ cpu_m68k_set_fpcr(env, fpcr);
+ __get_user(env->fpsr, &fpregs->f_fpcntl[1]);
+ /* fpiar is not emulated */
+
+ for (i = 0; i < 8; i++) {
+ uint32_t high;
+ __get_user(high, &fpregs->f_fpregs[i * 3]);
+ env->fregs[i].d.high = high >> 16;
+ __get_user(env->fregs[i].d.low,
+ (uint64_t *)&fpregs->f_fpregs[i * 3 + 1]);
+ }
+}
+
static inline int target_rt_restore_ucontext(CPUM68KState *env,
struct target_ucontext *uc)
{
@@ -5764,6 +5805,8 @@ static inline int target_rt_restore_ucontext(CPUM68KState *env,
__get_user(temp, &gregs[17]);
cpu_m68k_set_ccr(env, temp);
+ target_rt_restore_fpu_state(env, uc);
+
return 0;
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