more fp fixes

fix unaligned accesses in mmaped disk device

src/arch/sparc/isa/decoder.isa:
    get (ld|st)fsr ops working right. In reality the fp enable check needs to go higher up in the emitted code
src/arch/sparc/isa/formats/basic.isa:
    move the cexec into the aexec field
src/cpu/exetrace.cc:
    copy the exception state from legion when we get it wrong. We aren't going to get it right without an fp emulation layer
src/dev/sparc/mm_disk.cc:
src/dev/sparc/mm_disk.hh:
    fix unaligned accesses in the memory mapped disk device

--HG--
extra : convert_revision : aaa33096b08cf0563fe291d984a87493a117e528

1 files changed, 4 insertions, 0 deletions

diff --git a/src/arch/sparc/isa/formats/basic.isa b/src/arch/sparc/isa/formats/basic.isa
index fac523aeb..017f43780 100644
--- a/src/arch/sparc/isa/formats/basic.isa
+++ b/src/arch/sparc/isa/formats/basic.isa
@@ -106,6 +106,7 @@ def format BasicOperate(code, *flags) {{
 
 def format FpBasic(code, *flags) {{
         fp_code = """
+    Fsr |= bits(Fsr,4,0) << 5;
     Fsr = insertBits(Fsr,4,0,0);
 #if defined(__sun) || defined (__OpenBSD__)
     fp_rnd newrnd = FP_RN;
@@ -128,7 +129,10 @@ def format FpBasic(code, *flags) {{
     fesetround(newrnd);
 #endif
 """
+
         fp_code += code
+
+
         fp_code += """
 #if defined(__sun) || defined (__OpenBSD__)
     fpsetround(oldrnd);