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[PULL,35/76] target-arm: Give the FPSCR rounding modes names

Message ID 1389125052-22931-36-git-send-email-peter.maydell@linaro.org
State New
Headers show

Commit Message

Peter Maydell Jan. 7, 2014, 8:03 p.m. UTC 
From: Alexander Graf <agraf@suse.de>

When setting rounding modes we currently just hardcode the numeric values
for rounding modes in a big switch statement.

With AArch64 support coming, we will need to refer to these rounding modes
at different places throughout the code though, so let's better give them
names so we don't get confused by accident.

Signed-off-by: Alexander Graf <agraf@suse.de>
[WN: Commit message tweak, use names from ARM ARM.]
Signed-off-by: Will Newton <will.newton@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
---
 target-arm/cpu.h    | 9 +++++++++
 target-arm/helper.c | 8 ++++----
 2 files changed, 13 insertions(+), 4 deletions(-)
diff mbox

Patch

diff --git a/target-arm/cpu.h b/target-arm/cpu.h
index 7084a74..43ca572 100644
--- a/target-arm/cpu.h
+++ b/target-arm/cpu.h
@@ -487,6 +487,15 @@  static inline void vfp_set_fpcr(CPUARMState *env, uint32_t val)
     vfp_set_fpscr(env, new_fpscr);
 }
 
+enum arm_fprounding {
+    FPROUNDING_TIEEVEN,
+    FPROUNDING_POSINF,
+    FPROUNDING_NEGINF,
+    FPROUNDING_ZERO,
+    FPROUNDING_TIEAWAY,
+    FPROUNDING_ODD
+};
+
 enum arm_cpu_mode {
   ARM_CPU_MODE_USR = 0x10,
   ARM_CPU_MODE_FIQ = 0x11,
diff --git a/target-arm/helper.c b/target-arm/helper.c
index d0b7c27..9afec28 100644
--- a/target-arm/helper.c
+++ b/target-arm/helper.c
@@ -3815,16 +3815,16 @@  void HELPER(vfp_set_fpscr)(CPUARMState *env, uint32_t val)
     if (changed & (3 << 22)) {
         i = (val >> 22) & 3;
         switch (i) {
-        case 0:
+        case FPROUNDING_TIEEVEN:
             i = float_round_nearest_even;
             break;
-        case 1:
+        case FPROUNDING_POSINF:
             i = float_round_up;
             break;
-        case 2:
+        case FPROUNDING_NEGINF:
             i = float_round_down;
             break;
-        case 3:
+        case FPROUNDING_ZERO:
             i = float_round_to_zero;
             break;
         }