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authorKumar Gala <galak@kernel.crashing.org>2008-06-27 09:39:00 -0500
committerKumar Gala <galak@kernel.crashing.org>2008-09-16 10:01:37 -0500
commit48d6c64311ddb6417b901639530ccbc47bdc7635 (patch)
treedfdb08412813343a6ee3bb8b57d34b99ec818a27 /include/math-emu/op-common.h
parent40d3057ac036f2501c1930728a6179be4fca577b (diff)
downloadlinux-sh-48d6c64311ddb6417b901639530ccbc47bdc7635.tar.gz
math-emu: Add support for reporting exact invalid exception
Some architectures (like powerpc) provide status information on the exact type of invalid exception. This is pretty straight forward as we already report invalid exceptions via FP_SET_EXCEPTION. We add new flags (FP_EX_INVALID_*) the architecture code can define if it wants the exact invalid exception reported. We had to split out the INF/INF and 0/0 cases for divide to allow reporting the two invalid forms properly. Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Acked-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/math-emu/op-common.h')
-rw-r--r--include/math-emu/op-common.h12
1 files changed, 8 insertions, 4 deletions
diff --git a/include/math-emu/op-common.h b/include/math-emu/op-common.h
index bb46e7645d53..cc1ec396f8d6 100644
--- a/include/math-emu/op-common.h
+++ b/include/math-emu/op-common.h
@@ -73,7 +73,7 @@ do { \
X##_c = FP_CLS_NAN; \
/* Check for signaling NaN */ \
if (!(_FP_FRAC_HIGH_RAW_##fs(X) & _FP_QNANBIT_##fs)) \
- FP_SET_EXCEPTION(FP_EX_INVALID); \
+ FP_SET_EXCEPTION(FP_EX_INVALID | FP_EX_INVALID_SNAN); \
} \
break; \
} \
@@ -324,7 +324,7 @@ do { \
_FP_FRAC_SET_##wc(R, _FP_NANFRAC_##fs); \
R##_s = _FP_NANSIGN_##fs; \
R##_c = FP_CLS_NAN; \
- FP_SET_EXCEPTION(FP_EX_INVALID); \
+ FP_SET_EXCEPTION(FP_EX_INVALID | FP_EX_INVALID_ISI); \
break; \
} \
/* FALLTHRU */ \
@@ -431,7 +431,7 @@ do { \
R##_s = _FP_NANSIGN_##fs; \
R##_c = FP_CLS_NAN; \
_FP_FRAC_SET_##wc(R, _FP_NANFRAC_##fs); \
- FP_SET_EXCEPTION(FP_EX_INVALID); \
+ FP_SET_EXCEPTION(FP_EX_INVALID | FP_EX_INVALID_IMZ);\
break; \
\
default: \
@@ -490,11 +490,15 @@ do { \
break; \
\
case _FP_CLS_COMBINE(FP_CLS_INF,FP_CLS_INF): \
+ R##_s = _FP_NANSIGN_##fs; \
+ R##_c = FP_CLS_NAN; \
+ _FP_FRAC_SET_##wc(R, _FP_NANFRAC_##fs); \
+ FP_SET_EXCEPTION(FP_EX_INVALID | FP_EX_INVALID_IDI);\
case _FP_CLS_COMBINE(FP_CLS_ZERO,FP_CLS_ZERO): \
R##_s = _FP_NANSIGN_##fs; \
R##_c = FP_CLS_NAN; \
_FP_FRAC_SET_##wc(R, _FP_NANFRAC_##fs); \
- FP_SET_EXCEPTION(FP_EX_INVALID); \
+ FP_SET_EXCEPTION(FP_EX_INVALID | FP_EX_INVALID_ZDZ);\
break; \
\
default: \