softfloat: Name rounding mode enum

Give the previously unnamed enum a typedef name.  Use the packed
attribute so that we do not affect the layout of the float_status
struct.  Use it in the prototypes of relevant functions.

Adjust switch statements as necessary to avoid compiler warnings.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

1 files changed, 3 insertions, 3 deletions

diff --git a/include/fpu/softfloat-types.h b/include/fpu/softfloat-types.h
index 874ddd9f93..7680193ebc 100644
--- a/include/fpu/softfloat-types.h
+++ b/include/fpu/softfloat-types.h
@@ -123,7 +123,7 @@ typedef struct {
  *Software IEC/IEEE floating-point rounding mode.
  */
 
-enum {
+typedef enum __attribute__((__packed__)) {
     float_round_nearest_even = 0,
     float_round_down         = 1,
     float_round_up           = 2,
@@ -131,7 +131,7 @@ enum {
     float_round_ties_away    = 4,
     /* Not an IEEE rounding mode: round to the closest odd mantissa value */
     float_round_to_odd       = 5,
-};
+} FloatRoundMode;
 
 /*
  * Software IEC/IEEE floating-point exception flags.
@@ -156,7 +156,7 @@ enum {
  */
 
 typedef struct float_status {
-    signed char float_rounding_mode;
+    FloatRoundMode float_rounding_mode;
     uint8_t     float_exception_flags;
     signed char floatx80_rounding_precision;
     bool tininess_before_rounding;