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Correct powerpc spe opcode lookup

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Defining SPE2_OPCD_SEGS as 13 discounts the possibility that we'd
ever look up spe2_opcd_indices[14..16], which I think is possible.
Extend that array to size 16+1, using the macros we use to index the
array.  Similarly use the index macros for PPC_OPCD_SEGS and
VLE_OPCD_SEGS.

	* ppc-dis.c (PPC_OPCD_SEGS): Define using PPC_OP.
	(VLE_OPCD_SEGS, SPE2_OPCD_SEGS): Similarly, using macros used to
	partition opcode space for index lookup.
This commit is contained in:
Alan Modra 2018-05-07 11:35:22 +09:30
parent 7785df4880
commit f413a91378
2 changed files with 12 additions and 6 deletions
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6
opcodes/ChangeLog
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@ -1,3 +1,9 @@
2018-05-08 Alan Modra <amodra@gmail.com>
* ppc-dis.c (PPC_OPCD_SEGS): Define using PPC_OP.
(VLE_OPCD_SEGS, SPE2_OPCD_SEGS): Similarly, using macros used to
partition opcode space for index lookup.
2018-05-07 Peter Bergner <bergner@vnet.ibm.com.com>
* ppc-dis.c (print_insn_powerpc) <insn_is_short>: Replace this...

12
opcodes/ppc-dis.c
View File

@ -367,12 +367,12 @@ powerpc_init_dialect (struct disassemble_info *info)
POWERPC_DIALECT(info) = dialect;
}
#define PPC_OPCD_SEGS 64
static unsigned short powerpc_opcd_indices[PPC_OPCD_SEGS+1];
#define VLE_OPCD_SEGS 32
static unsigned short vle_opcd_indices[VLE_OPCD_SEGS+1];
#define SPE2_OPCD_SEGS 13
static unsigned short spe2_opcd_indices[SPE2_OPCD_SEGS+1];
#define PPC_OPCD_SEGS (1 + PPC_OP (-1))
static unsigned short powerpc_opcd_indices[PPC_OPCD_SEGS + 1];
#define VLE_OPCD_SEGS (1 + VLE_OP_TO_SEG (VLE_OP (-1, 0xffff)))
static unsigned short vle_opcd_indices[VLE_OPCD_SEGS + 1];
#define SPE2_OPCD_SEGS (1 + SPE2_XOP_TO_SEG (SPE2_XOP (-1)))
static unsigned short spe2_opcd_indices[SPE2_OPCD_SEGS + 1];
/* Calculate opcode table indices to speed up disassembly,
and init dialect. */