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42 lines
1.5 KiB
42 lines
1.5 KiB
7 years ago
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# commit fef13a78ea30d4c26d6bab48d731ebe864ee31b0
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# Author: Alan Modra <amodra@gmail.com>
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# Date: Sat Aug 17 18:33:45 2013 +0930
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#
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# PowerPC floating point little-endian [15 of 15]
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# http://sourceware.org/ml/libc-alpha/2013-07/msg00206.html
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#
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# The union loses when little-endian.
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#
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# * sysdeps/powerpc/powerpc32/power4/hp-timing.h (HP_TIMING_NOW):
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# Don't use a union to pack hi/low value.
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#
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diff -urN glibc-2.17-c758a686/sysdeps/powerpc/powerpc32/power4/hp-timing.h glibc-2.17-c758a686/sysdeps/powerpc/powerpc32/power4/hp-timing.h
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--- glibc-2.17-c758a686/sysdeps/powerpc/powerpc32/power4/hp-timing.h 2014-05-27 22:53:37.000000000 -0500
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+++ glibc-2.17-c758a686/sysdeps/powerpc/powerpc32/power4/hp-timing.h 2014-05-27 22:53:39.000000000 -0500
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@@ -87,18 +87,15 @@
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#define HP_TIMING_NOW(Var) \
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do { \
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- union { long long ll; long ii[2]; } _var; \
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- long tmp; \
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- __asm__ __volatile__ ( \
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- "1: mfspr %0,269;" \
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- " mfspr %1,268;" \
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- " mfspr %2,269;" \
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- " cmpw %0,%2;" \
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- " bne 1b;" \
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- : "=r" (_var.ii[0]), "=r" (_var.ii[1]) , "=r" (tmp) \
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- : : "cr0" \
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- ); \
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- Var = _var.ll; \
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+ unsigned int hi, lo, tmp; \
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+ __asm__ __volatile__ ("1: mfspr %0,269;" \
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+ " mfspr %1,268;" \
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+ " mfspr %2,269;" \
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+ " cmpw %0,%2;" \
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+ " bne 1b;" \
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+ : "=&r" (hi), "=&r" (lo), "=&r" (tmp) \
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+ : : "cr0"); \
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+ Var = ((hp_timing_t) hi << 32) | lo; \
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} while (0)
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