+/* For consistency checking, verify that all bits are specified either
+ by the match/mask part of the instruction definition, or by the
+ operand list. */
+static int
+validate_mips_insn (opc)
+ const struct mips_opcode *opc;
+{
+ const char *p = opc->args;
+ char c;
+ unsigned long used_bits = opc->mask;
+
+ if ((used_bits & opc->match) != opc->match)
+ {
+ as_bad (_("internal: bad mips opcode (mask error): %s %s"),
+ opc->name, opc->args);
+ return 0;
+ }
+#define USE_BITS(mask,shift) (used_bits |= ((mask) << (shift)))
+ while (*p)
+ switch (c = *p++)
+ {
+ case ',': break;
+ case '(': break;
+ case ')': break;
+ case '<': USE_BITS (OP_MASK_SHAMT, OP_SH_SHAMT); break;
+ case '>': USE_BITS (OP_MASK_SHAMT, OP_SH_SHAMT); break;
+ case 'A': break;
+ case 'B': USE_BITS (OP_MASK_SYSCALL, OP_SH_SYSCALL); break;
+ case 'C': USE_BITS (OP_MASK_COPZ, OP_SH_COPZ); break;
+ case 'D': USE_BITS (OP_MASK_FD, OP_SH_FD); break;
+ case 'E': USE_BITS (OP_MASK_RT, OP_SH_RT); break;
+ case 'F': break;
+ case 'G': USE_BITS (OP_MASK_RD, OP_SH_RD); break;
+ case 'I': break;
+ case 'L': break;
+ case 'M': USE_BITS (OP_MASK_CCC, OP_SH_CCC); break;
+ case 'N': USE_BITS (OP_MASK_BCC, OP_SH_BCC); break;
+ case 'R': USE_BITS (OP_MASK_FR, OP_SH_FR); break;
+ case 'S': USE_BITS (OP_MASK_FS, OP_SH_FS); break;
+ case 'T': USE_BITS (OP_MASK_FT, OP_SH_FT); break;
+ case 'V': USE_BITS (OP_MASK_FS, OP_SH_FS); break;
+ case 'W': USE_BITS (OP_MASK_FT, OP_SH_FT); break;
+ case 'a': USE_BITS (OP_MASK_TARGET, OP_SH_TARGET); break;
+ case 'b': USE_BITS (OP_MASK_RS, OP_SH_RS); break;
+ case 'c': USE_BITS (OP_MASK_CODE, OP_SH_CODE); break;
+ case 'd': USE_BITS (OP_MASK_RD, OP_SH_RD); break;
+ case 'f': break;
+ case 'h': USE_BITS (OP_MASK_PREFX, OP_SH_PREFX); break;
+ case 'i': USE_BITS (OP_MASK_IMMEDIATE, OP_SH_IMMEDIATE); break;
+ case 'j': USE_BITS (OP_MASK_DELTA, OP_SH_DELTA); break;
+ case 'k': USE_BITS (OP_MASK_CACHE, OP_SH_CACHE); break;
+ case 'l': break;
+ case 'o': USE_BITS (OP_MASK_DELTA, OP_SH_DELTA); break;
+ case 'p': USE_BITS (OP_MASK_DELTA, OP_SH_DELTA); break;
+ case 'q': USE_BITS (OP_MASK_CODE2, OP_SH_CODE2); break;
+ case 'r': USE_BITS (OP_MASK_RS, OP_SH_RS); break;
+ case 's': USE_BITS (OP_MASK_RS, OP_SH_RS); break;
+ case 't': USE_BITS (OP_MASK_RT, OP_SH_RT); break;
+ case 'u': USE_BITS (OP_MASK_IMMEDIATE, OP_SH_IMMEDIATE); break;
+ case 'v': USE_BITS (OP_MASK_RS, OP_SH_RS); break;
+ case 'w': USE_BITS (OP_MASK_RT, OP_SH_RT); break;
+ case 'x': break;
+ case 'z': break;
+ case 'P': USE_BITS (OP_MASK_PERFREG, OP_SH_PERFREG); break;
+ default:
+ as_bad (_("internal: bad mips opcode (unknown operand type `%c'): %s %s"),
+ c, opc->name, opc->args);
+ return 0;
+ }
+#undef USE_BITS
+ if (used_bits != 0xffffffff)
+ {
+ as_bad (_("internal: bad mips opcode (bits 0x%lx undefined): %s %s"),
+ ~used_bits & 0xffffffff, opc->name, opc->args);
+ return 0;
+ }
+ return 1;
+}
+