+/* Find a match for INSN in the SPE2 opcode table. */
+
+static const struct powerpc_opcode *
+lookup_spe2 (uint64_t insn)
+{
+ const struct powerpc_opcode *opcode, *opcode_end;
+ unsigned op, xop, seg;
+
+ op = PPC_OP (insn);
+ if (op != 0x4)
+ {
+ /* This is not SPE2 insn.
+ * All SPE2 instructions have OP=4 and differs by XOP */
+ return NULL;
+ }
+ xop = SPE2_XOP (insn);
+ seg = SPE2_XOP_TO_SEG (xop);
+
+ /* Find the first match in the opcode table for this major opcode. */
+ opcode_end = spe2_opcodes + spe2_opcd_indices[seg + 1];
+ for (opcode = spe2_opcodes + spe2_opcd_indices[seg];
+ opcode < opcode_end;
+ ++opcode)
+ {
+ uint64_t table_opcd = opcode->opcode;
+ uint64_t table_mask = opcode->mask;
+ uint64_t insn2;
+ const unsigned char *opindex;
+ const struct powerpc_operand *operand;
+ int invalid;
+
+ insn2 = insn;
+ if ((insn2 & table_mask) != table_opcd)
+ continue;
+
+ /* Check validity of operands. */
+ invalid = 0;
+ for (opindex = opcode->operands; *opindex != 0; ++opindex)
+ {
+ operand = powerpc_operands + *opindex;
+ if (operand->extract)
+ (*operand->extract) (insn, (ppc_cpu_t)0, &invalid);
+ }
+ if (invalid)
+ continue;
+
+ return opcode;
+ }
+
+ return NULL;
+}
+
projects / deliverable / binutils-gdb.git / blobdiff