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author | Ali Saidi <saidi@eecs.umich.edu> | 2007-02-02 18:04:42 -0500 |
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committer | Ali Saidi <saidi@eecs.umich.edu> | 2007-02-02 18:04:42 -0500 |
commit | 592f35ac0ff8d525fad2dc606b53b4cd8b84fd69 (patch) | |
tree | cdd2cf069de41c1f1fbf58a567dd5d855dce769c /src/arch/sparc/isa/formats | |
parent | 5c7192daedcd33d9f7deb42406002adf4f2ffb68 (diff) | |
download | gem5-592f35ac0ff8d525fad2dc606b53b4cd8b84fd69.tar.xz |
fix mostly floating point related
src/arch/sparc/floatregfile.cc:
fix fp read/writing to registers... looking for suggestions on cleaner ways if anyone has them
src/arch/sparc/isa/decoder.isa:
fix some fp implementations
src/arch/sparc/isa/formats/basic.isa:
add new fp op class that 0 cexec in fsr and sets rounding mode for the up comming op
src/arch/sparc/isa/includes.isa:
include the appropriate header files for the rounding code
src/arch/sparc/miscregfile.cc:
print fsr out when it's read/written and the Sparc traceflgas in on
src/cpu/exetrace.cc:
fix printing of float registers
--HG--
extra : convert_revision : 49faab27f2e786a8455f9ca0f3f0132380c9d992
Diffstat (limited to 'src/arch/sparc/isa/formats')
-rw-r--r-- | src/arch/sparc/isa/formats/basic.isa | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/src/arch/sparc/isa/formats/basic.isa b/src/arch/sparc/isa/formats/basic.isa index e8762a205..fac523aeb 100644 --- a/src/arch/sparc/isa/formats/basic.isa +++ b/src/arch/sparc/isa/formats/basic.isa @@ -103,3 +103,42 @@ def format BasicOperate(code, *flags) {{ decode_block = BasicDecode.subst(iop) exec_output = BasicExecute.subst(iop) }}; + +def format FpBasic(code, *flags) {{ + fp_code = """ + Fsr = insertBits(Fsr,4,0,0); +#if defined(__sun) || defined (__OpenBSD__) + fp_rnd newrnd = FP_RN; + switch (Fsr<31:30>) { + case 0: newrnd = FP_RN; break; + case 1: newrnd = FP_RZ; break; + case 2: newrnd = FP_RP; break; + case 3: newrnd = FP_RM; break; + } + fp_rnd oldrnd = fpsetround(newrnd); +#else + int newrnd = FE_TONEAREST; + switch (Fsr<31:30>) { + case 0: newrnd = FE_TONEAREST; break; + case 1: newrnd = FE_TOWARDZERO; break; + case 2: newrnd = FE_UPWARD; break; + case 3: newrnd = FE_DOWNWARD; break; + } + int oldrnd = fegetround(); + fesetround(newrnd); +#endif +""" + fp_code += code + fp_code += """ +#if defined(__sun) || defined (__OpenBSD__) + fpsetround(oldrnd); +#else + fesetround(oldrnd); +#endif +""" + iop = InstObjParams(name, Name, 'SparcStaticInst', fp_code, flags) + header_output = BasicDeclare.subst(iop) + decoder_output = BasicConstructor.subst(iop) + decode_block = BasicDecode.subst(iop) + exec_output = BasicExecute.subst(iop) +}}; |