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Add vs{l,r} instructions

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Signed-off-by: Nathan Froyd <froydnj@codesourcery.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6237 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
aurel32 2009-01-08 18:54:48 +00:00
parent 1add6e234a
commit d9430add63
3 changed files with 43 additions and 0 deletions
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2
target-ppc/helper.h
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@ -173,6 +173,8 @@ DEF_HELPER_2(lvsr, void, avr, tl);
DEF_HELPER_3(vrlb, void, avr, avr, avr)
DEF_HELPER_3(vrlh, void, avr, avr, avr)
DEF_HELPER_3(vrlw, void, avr, avr, avr)
DEF_HELPER_3(vsl, void, avr, avr, avr)
DEF_HELPER_3(vsr, void, avr, avr, avr)
DEF_HELPER_4(vsldoi, void, avr, avr, avr, i32)
DEF_HELPER_3(vspltb, void, avr, avr, i32)
DEF_HELPER_3(vsplth, void, avr, avr, i32)

39
target-ppc/op_helper.c
View File

@ -2452,6 +2452,45 @@ void helper_vsel (ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b, ppc_avr_t *c)
r->u64[1] = (a->u64[1] & ~c->u64[1]) | (b->u64[1] & c->u64[1]);
}
#if defined(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
* shift counts are not identical. We check to make sure that they are
* to conform to what real hardware appears to do. */
#define VSHIFT(suffix, leftp) \
void helper_vs##suffix (ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b) \
{ \
int shift = b->u8[LO_IDX*0x15] & 0x7; \
int doit = 1; \
int i; \
for (i = 0; i < ARRAY_SIZE(r->u8); i++) { \
doit = doit && ((b->u8[i] & 0x7) == shift); \
} \
if (doit) { \
if (shift == 0) { \
*r = *a; \
} else if (leftp) { \
uint64_t carry = a->u64[LO_IDX] >> (64 - shift); \
r->u64[HI_IDX] = (a->u64[HI_IDX] << shift) | carry; \
r->u64[LO_IDX] = a->u64[LO_IDX] << shift; \
} else { \
uint64_t carry = a->u64[HI_IDX] << (64 - shift); \
r->u64[LO_IDX] = (a->u64[LO_IDX] >> shift) | carry; \
r->u64[HI_IDX] = a->u64[HI_IDX] >> shift; \
} \
} \
}
VSHIFT(l, LEFT)
VSHIFT(r, RIGHT)
#undef VSHIFT
#undef LEFT
#undef RIGHT
#define VSL(suffix, element) \
void helper_vsl##suffix (ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b) \
{ \

2
target-ppc/translate.c
View File

@ -6344,6 +6344,8 @@ GEN_VXFORM(vsubcuw, 0, 22);
GEN_VXFORM(vrlb, 2, 0);
GEN_VXFORM(vrlh, 2, 1);
GEN_VXFORM(vrlw, 2, 2);
GEN_VXFORM(vsl, 2, 7);
GEN_VXFORM(vsr, 2, 11);
GEN_VXFORM(vpkuhum, 7, 0);
GEN_VXFORM(vpkuwum, 7, 1);
GEN_VXFORM(vpkuhus, 7, 2);