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| author | Ryan S. Arnold <rsa@us.ibm.com> | 2011-05-18 15:19:56 -0500 |
|---|---|---|
| committer | Ryan S. Arnold <rsa@us.ibm.com> | 2011-09-12 16:37:09 -0500 |
| commit | 33ec460272bc74d968783725f24643ee4e953572 (patch) | |
| tree | 5f59e2d062f81498d77458fcc2a11f19c9257eb6 | |
| parent | 736d35d8016504c74c28cd9e8ffd3b45039535dc (diff) | |
| download | glibc-33ec460272bc74d968783725f24643ee4e953572.tar.gz | |
Prevent Altivec and VSX insns on PowerPC64 when no FPRs or VRs are avail.
| -rw-r--r-- | ChangeLog | 6 | ||||
| -rw-r--r-- | sysdeps/powerpc/powerpc64/Makefile | 7 |
2 files changed, 11 insertions, 2 deletions
@@ -1,3 +1,9 @@ +2011-05-18 Ryan S. Arnold <rsa@us.ibm.com> + + * sysdeps/powerpc/powerpc64/Makefile (no-special-regs): Add -mno-vsx + and -mno-altivec to prevent the compiler from using Altivec and/or + VSX instructions when the corresponding registers are not available. + 2011-08-18 David Flaherty <flaherty@linux.vnet.ibm.com> * sysdeps/ieee754/ldbl-128ibm/s_fmal.c: New file which checks diff --git a/sysdeps/powerpc/powerpc64/Makefile b/sysdeps/powerpc/powerpc64/Makefile index c7cc601ec4..9056e60c4e 100644 --- a/sysdeps/powerpc/powerpc64/Makefile +++ b/sysdeps/powerpc/powerpc64/Makefile @@ -12,7 +12,10 @@ endif # These flags prevent FPU or Altivec registers from being used, # for code called in contexts that is not allowed to touch those registers. -# Stupid GCC requires us to pass all these ridiculous switches. +# Stupid GCC requires us to pass all these ridiculous switches. We need to +# pass the -mno-* switches as well to prevent the compiler from attempting +# to emit altivec or vsx instructions, especially when the registers aren't +# available. no-special-regs := $(sort $(foreach n,40 41 50 51 60 61 62 63 \ $(foreach m,2 3 4 5 6 7 8 9, \ 3$m 4$m 5$m),\ @@ -20,7 +23,7 @@ no-special-regs := $(sort $(foreach n,40 41 50 51 60 61 62 63 \ $(sort $(foreach n,$(foreach m,0 1 2 3 4 5 6 7 8 9,\ $m 1$m 2$m) 30 31,\ -ffixed-v$n)) \ - -ffixed-vrsave -ffixed-vscr + -ffixed-vrsave -ffixed-vscr -mno-altivec -mno-vsx ifeq ($(subdir),csu) sysdep_routines += hp-timing |