1 files changed, 32 insertions, 32 deletions

diff --git a/target/alpha/helper.c b/target/alpha/helper.c
index 19cda0a2db..55d7274d94 100644
--- a/target/alpha/helper.c
+++ b/target/alpha/helper.c
@@ -36,53 +36,53 @@ uint64_t cpu_alpha_load_fpcr(CPUAlphaState *env)
 
 void cpu_alpha_store_fpcr(CPUAlphaState *env, uint64_t val)
 {
+    static const uint8_t rm_map[] = {
+        [FPCR_DYN_NORMAL >> FPCR_DYN_SHIFT] = float_round_nearest_even,
+        [FPCR_DYN_CHOPPED >> FPCR_DYN_SHIFT] = float_round_to_zero,
+        [FPCR_DYN_MINUS >> FPCR_DYN_SHIFT] = float_round_down,
+        [FPCR_DYN_PLUS >> FPCR_DYN_SHIFT] = float_round_up,
+    };
+
     uint32_t fpcr = val >> 32;
     uint32_t t = 0;
 
+    /* Record the raw value before adjusting for linux-user.  */
+    env->fpcr = fpcr;
+
+#ifdef CONFIG_USER_ONLY
+    /*
+     * Override some of these bits with the contents of ENV->SWCR.
+     * In system mode, some of these would trap to the kernel, at
+     * which point the kernel's handler would emulate and apply
+     * the software exception mask.
+     */
+    uint32_t soft_fpcr = alpha_ieee_swcr_to_fpcr(env->swcr) >> 32;
+    fpcr |= soft_fpcr & (FPCR_STATUS_MASK | FPCR_DNZ);
+
+    /*
+     * The IOV exception is disabled by the kernel with SWCR_TRAP_ENABLE_INV,
+     * which got mapped by alpha_ieee_swcr_to_fpcr to FPCR_INVD.
+     * Add FPCR_IOV to fpcr_exc_enable so that it is handled identically.
+     */
+    t |= CONVERT_BIT(soft_fpcr, FPCR_INVD, FPCR_IOV);
+#endif
+
     t |= CONVERT_BIT(fpcr, FPCR_INED, FPCR_INE);
     t |= CONVERT_BIT(fpcr, FPCR_UNFD, FPCR_UNF);
     t |= CONVERT_BIT(fpcr, FPCR_OVFD, FPCR_OVF);
     t |= CONVERT_BIT(fpcr, FPCR_DZED, FPCR_DZE);
     t |= CONVERT_BIT(fpcr, FPCR_INVD, FPCR_INV);
 
-    env->fpcr = fpcr;
     env->fpcr_exc_enable = ~t & FPCR_STATUS_MASK;
 
-    switch (fpcr & FPCR_DYN_MASK) {
-    case FPCR_DYN_NORMAL:
-    default:
-        t = float_round_nearest_even;
-        break;
-    case FPCR_DYN_CHOPPED:
-        t = float_round_to_zero;
-        break;
-    case FPCR_DYN_MINUS:
-        t = float_round_down;
-        break;
-    case FPCR_DYN_PLUS:
-        t = float_round_up;
-        break;
-    }
-    env->fpcr_dyn_round = t;
-
-    env->fpcr_flush_to_zero = (fpcr & FPCR_UNFD) && (fpcr & FPCR_UNDZ);
+    env->fpcr_dyn_round = rm_map[(fpcr & FPCR_DYN_MASK) >> FPCR_DYN_SHIFT];
     env->fp_status.flush_inputs_to_zero = (fpcr & FPCR_DNZ) != 0;
 
+    t = (fpcr & FPCR_UNFD) && (fpcr & FPCR_UNDZ);
 #ifdef CONFIG_USER_ONLY
-    /*
-     * Override some of these bits with the contents of ENV->SWCR.
-     * In system mode, some of these would trap to the kernel, at
-     * which point the kernel's handler would emulate and apply
-     * the software exception mask.
-     */
-    if (env->swcr & SWCR_MAP_DMZ) {
-        env->fp_status.flush_inputs_to_zero = 1;
-    }
-    if (env->swcr & SWCR_MAP_UMZ) {
-        env->fp_status.flush_to_zero = 1;
-    }
-    env->fpcr_exc_enable &= ~(alpha_ieee_swcr_to_fpcr(env->swcr) >> 32);
+    t |= (env->swcr & SWCR_MAP_UMZ) != 0;
 #endif
+    env->fpcr_flush_to_zero = t;
 }
 
 uint64_t helper_load_fpcr(CPUAlphaState *env)