diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/arch/alpha/isa/fp.isa | 12 | ||||
| -rw-r--r-- | src/arch/sparc/isa/formats/basic.isa | 31 | ||||
| -rw-r--r-- | src/arch/sparc/isa/includes.isa | 12 | ||||
| -rw-r--r-- | src/base/SConscript | 1 | ||||
| -rw-r--r-- | src/base/fenv.c | 56 | ||||
| -rw-r--r-- | src/base/fenv.hh | 21 | ||||
| -rw-r--r-- | src/base/random.cc | 8 |
7 files changed, 87 insertions, 54 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) { diff --git a/src/arch/sparc/isa/formats/basic.isa b/src/arch/sparc/isa/formats/basic.isa index 7665d2d4f..5b0868132 100644 --- a/src/arch/sparc/isa/formats/basic.isa +++ b/src/arch/sparc/isa/formats/basic.isa @@ -109,37 +109,22 @@ 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; + int newrnd = M5_FE_TONEAREST; 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; + case 0: newrnd = M5_FE_TONEAREST; break; + case 1: newrnd = M5_FE_TOWARDZERO; break; + case 2: newrnd = M5_FE_UPWARD; break; + case 3: newrnd = M5_FE_DOWNWARD; 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 + int oldrnd = m5_fegetround(); + m5_fesetround(newrnd); """ fp_code += code fp_code += """ -#if defined(__sun) || defined (__OpenBSD__) - fpsetround(oldrnd); -#else - fesetround(oldrnd); -#endif + m5_fesetround(oldrnd); """ fp_code = filterDoubles(fp_code) iop = InstObjParams(name, Name, 'SparcStaticInst', fp_code, flags) diff --git a/src/arch/sparc/isa/includes.isa b/src/arch/sparc/isa/includes.isa index 05e9e8731..e9cd660b5 100644 --- a/src/arch/sparc/isa/includes.isa +++ b/src/arch/sparc/isa/includes.isa @@ -53,22 +53,14 @@ output decoder {{ #include "cpu/thread_context.hh" // for Jump::branchTarget() #include "mem/packet.hh" -#if defined(linux) || defined(__APPLE__) -#include <fenv.h> -#endif +#include "base/fenv.hh" #include <algorithm> using namespace SparcISA; }}; output exec {{ -#if defined(linux) || defined(__APPLE__) -#include <fenv.h> -#endif - -#if defined(__sun) || defined (__OpenBSD__) -#include <ieeefp.h> -#endif +#include "base/fenv.hh" #if FULL_SYSTEM #include "sim/pseudo_inst.hh" diff --git a/src/base/SConscript b/src/base/SConscript index 5e4aaafc2..cc9d06a0e 100644 --- a/src/base/SConscript +++ b/src/base/SConscript @@ -57,6 +57,7 @@ Source('circlebuf.cc') Source('cprintf.cc') Source('crc.cc') Source('fast_alloc.cc') +Source('fenv.c') Source('fifo_buffer.cc') Source('hostinfo.cc') Source('hybrid_pred.cc') diff --git a/src/base/fenv.c b/src/base/fenv.c new file mode 100644 index 000000000..269913a60 --- /dev/null +++ b/src/base/fenv.c @@ -0,0 +1,56 @@ +/* + * Copyright (c) 2007 The Regents of The University of Michigan + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer; + * redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution; + * neither the name of the copyright holders nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * Authors: Ali Saidi + */ + +#include <assert.h> +#include <stdlib.h> +#include <fenv.h> + +void m5_fesetround(int rm); +int m5_fegetround(); + +static const int m5_round_ops[] = {FE_DOWNWARD, FE_TONEAREST, FE_TOWARDZERO, FE_UPWARD}; + +void m5_fesetround(int rm) +{ + assert(rm > 0 && rm < 4); + fesetround(m5_round_ops[rm]); +} + +int m5_fegetround() +{ + int x; + int rm = fegetround(); + for(x = 0; x < 4; x++) + if (m5_round_ops[x] == rm) + return x; + abort(); + return 0; +} + diff --git a/src/base/fenv.hh b/src/base/fenv.hh index 013d2f09b..42b383888 100644 --- a/src/base/fenv.hh +++ b/src/base/fenv.hh @@ -33,20 +33,21 @@ #include "config/use_fenv.hh" -#if USE_FENV - -#include <fenv.h> +#define M5_FE_DOWNWARD 0 +#define M5_FE_TONEAREST 1 +#define M5_FE_TOWARDZERO 2 +#define M5_FE_UPWARD 3 +#if USE_FENV +extern "C" { +void m5_fesetround(int rm); +int m5_fegetround(); +} #else // Dummy definitions to allow code to compile w/o a real <fenv.h>. - -#define FE_TONEAREST 0 -#define FE_DOWNWARD 0 -#define FE_UPWARD 0 -#define FE_TOWARDZERO 0 - -inline int fesetround(int rounding_mode) { return 0; } +inline void m5_fesetround(int rm) { ; } +inline int m5_fegetround() {return 0; } #endif // USE_FENV diff --git a/src/base/random.cc b/src/base/random.cc index ceab337d9..5390ceb46 100644 --- a/src/base/random.cc +++ b/src/base/random.cc @@ -29,9 +29,6 @@ * Ali Saidi */ -#if defined(__sun) -#include <ieeefp.h> -#endif #ifdef __SUNPRO_CC #include <stdlib.h> #include <math.h> @@ -61,9 +58,10 @@ m5round(double r) { #if defined(__sun) double val; - fp_rnd oldrnd = fpsetround(FP_RN); + int oldrnd = m5_fegetround(); + m5_fesetround(M5_FP_TONEAREST); val = rint(r); - fpsetround(oldrnd); + m5_fesetround(oldrnd); return val; #else return round(r); |