create base/fenv.c to standerdize fenv across platforms. It's a c file and not a cpp file because c99

(which defines fenv) doesn't necessarily extend to c++ and it is a problem with solaris. If really
desired this could wrap the ieeefp interface found in bsd* as well, but I see no need at the moment.

src/arch/alpha/isa/fp.isa:
src/arch/sparc/isa/formats/basic.isa:
    use m5_fesetround()/m5_fegetround() istead of fenv interface directly
src/arch/sparc/isa/includes.isa:
    use base/fenv instead of fenv directly
src/base/SConscript:
    add fenv to sconscript
src/base/fenv.hh:
src/base/random.cc:
    m5 implementation to standerdize fenv across platforms.

--HG--
extra : convert_revision : 38d2629affd964dcd1a5ab0db4ac3cb21438e72c

1 files changed, 6 insertions, 6 deletions

diff --git a/src/arch/alpha/isa/fp.isa b/src/arch/alpha/isa/fp.isa
index a350aa05f..773e7d10c 100644
--- a/src/arch/alpha/isa/fp.isa
+++ b/src/arch/alpha/isa/fp.isa
@@ -192,10 +192,10 @@ output decoder {{
     }
 
     const int AlphaFP::alphaToC99RoundingMode[] = {
-        FE_TOWARDZERO,	// Chopped
-        FE_DOWNWARD,	// Minus_Infinity
-        FE_TONEAREST,	// Normal
-        FE_UPWARD	// Dynamic in inst, Plus_Infinity in FPCR
+        M5_FE_TOWARDZERO,	// Chopped
+        M5_FE_DOWNWARD,	// Minus_Infinity
+        M5_FE_TONEAREST,	// Normal
+        M5_FE_UPWARD	// Dynamic in inst, Plus_Infinity in FPCR
     };
 
     const char *AlphaFP::roundingModeSuffix[] = { "c", "m", "", "d" };
@@ -228,10 +228,10 @@ def template FloatingPointExecute {{
         if (roundingMode == Normal) {
             %(code)s;
         } else {
-            fesetround(getC99RoundingMode(
+            m5_fesetround(getC99RoundingMode(
                            xc->readMiscRegNoEffect(AlphaISA::MISCREG_FPCR)));
             %(code)s;
-            fesetround(FE_TONEAREST);
+            m5_fesetround(M5_FE_TONEAREST);
         }
 #else
         if (roundingMode != Normal && !warnedOnRounding) {