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target-ppc: Fix Altivec Shifts 

Fix the implementation of the Altivec shift left and shift right
instructions (vsl, vsr) which erroneously inverts shift direction
on big endian hosts.

Signed-off-by: Tom Musta <tommusta@gmail.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Tom Musta 2014-10-29 10:02:39 -05:00 committed by Alexander Graf
parent 36cbde7c30
commit 24e669ba53
1 changed files with 2 additions and 11 deletions
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13
target-ppc/int_helper.c
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@ -1552,13 +1552,6 @@ void helper_vlogefp(CPUPPCState *env, ppc_avr_t *r, ppc_avr_t *b)
} }
} }
#if defined(HOST_WORDS_BIGENDIAN)
#define LEFT 0
#define RIGHT 1
#else
#define LEFT 1
#define RIGHT 0
#endif
/* The specification says that the results are undefined if all of the /* The specification says that the results are undefined if all of the
* shift counts are not identical. We check to make sure that they are * shift counts are not identical. We check to make sure that they are
* to conform to what real hardware appears to do. */ * to conform to what real hardware appears to do. */
@ -1588,11 +1581,9 @@ void helper_vlogefp(CPUPPCState *env, ppc_avr_t *r, ppc_avr_t *b)
} \ } \
} \ } \
} }
VSHIFT(l, LEFT) VSHIFT(l, 1)
VSHIFT(r, RIGHT) VSHIFT(r, 0)
#undef VSHIFT #undef VSHIFT
#undef LEFT
#undef RIGHT
#define VSL(suffix, element, mask) \ #define VSL(suffix, element, mask) \
void helper_vsl##suffix(ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b) \ void helper_vsl##suffix(ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b) \