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Add VSX Instruction Decoders 

This patch adds decoders for the VSX fields XT, XS, XA, XB and
DM.  The first four are split fields and a general helper for
these types of fields is also added.

Signed-off-by: Tom Musta <tommusta@gmail.com>
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Tom Musta 2013-10-22 22:06:46 +11:00 committed by Alexander Graf
parent 1f29871cb7
commit f9fc6d810f
1 changed files with 11 additions and 0 deletions
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11
target-ppc/translate.c
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@ -366,6 +366,12 @@ static inline int32_t name(uint32_t opcode) \
return (int16_t)((opcode >> (shift)) & ((1 << (nb)) - 1)); \
}
#define EXTRACT_HELPER_SPLIT(name, shift1, nb1, shift2, nb2) \
static inline uint32_t name(uint32_t opcode) \
{ \
return (((opcode >> (shift1)) & ((1 << (nb1)) - 1)) << nb2) | \
((opcode >> (shift2)) & ((1 << (nb2)) - 1)); \
}
/* Opcode part 1 */
EXTRACT_HELPER(opc1, 26, 6);
/* Opcode part 2 */
@ -480,6 +486,11 @@ static inline target_ulong MASK(uint32_t start, uint32_t end)
return ret;
}
EXTRACT_HELPER_SPLIT(xT, 0, 1, 21, 5);
EXTRACT_HELPER_SPLIT(xS, 0, 1, 21, 5);
EXTRACT_HELPER_SPLIT(xA, 2, 1, 16, 5);
EXTRACT_HELPER_SPLIT(xB, 1, 1, 11, 5);
EXTRACT_HELPER(DM, 8, 2);
/*****************************************************************************/
/* PowerPC instructions table */