diff options
Diffstat (limited to 'gas/config/tc-mips.c')
| -rw-r--r-- | gas/config/tc-mips.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/gas/config/tc-mips.c b/gas/config/tc-mips.c index 6455143..3315fb1 100644 --- a/gas/config/tc-mips.c +++ b/gas/config/tc-mips.c @@ -7814,6 +7814,10 @@ validate_mips_insn (const struct mips_opcode *opc) case '+': switch (c = *p++) { + case '1': USE_BITS (OP_MASK_UDI1, OP_SH_UDI1); break; + case '2': USE_BITS (OP_MASK_UDI2, OP_SH_UDI2); break; + case '3': USE_BITS (OP_MASK_UDI3, OP_SH_UDI3); break; + case '4': USE_BITS (OP_MASK_UDI4, OP_SH_UDI4); break; case 'A': USE_BITS (OP_MASK_SHAMT, OP_SH_SHAMT); break; case 'B': USE_BITS (OP_MASK_INSMSB, OP_SH_INSMSB); break; case 'C': USE_BITS (OP_MASK_EXTMSBD, OP_SH_EXTMSBD); break; @@ -7919,6 +7923,22 @@ validate_mips_insn (const struct mips_opcode *opc) return 1; } +/* UDI immediates. */ +struct mips_immed { + char type; + unsigned int shift; + unsigned long mask; + const char * desc; +}; + +static const struct mips_immed mips_immed[] = { + { '1', OP_SH_UDI1, OP_MASK_UDI1, 0}, + { '2', OP_SH_UDI2, OP_MASK_UDI2, 0}, + { '3', OP_SH_UDI3, OP_MASK_UDI3, 0}, + { '4', OP_SH_UDI4, OP_MASK_UDI4, 0}, + { 0,0,0,0 } +}; + /* This routine assembles an instruction into its binary format. As a side effect, it sets one of the global variables imm_reloc or offset_reloc to the type of relocation to do if one of the operands @@ -8324,6 +8344,34 @@ mips_ip (char *str, struct mips_cl_insn *ip) case '+': /* Opcode extension character. */ switch (*++args) { + case '1': /* UDI immediates. */ + case '2': + case '3': + case '4': + { + const struct mips_immed *imm = mips_immed; + + while (imm->type && imm->type != *args) + ++imm; + if (! imm->type) + internalError (); + my_getExpression (&imm_expr, s); + check_absolute_expr (ip, &imm_expr); + if ((unsigned long) imm_expr.X_add_number & ~imm->mask) + { + as_warn (_("Illegal %s number (%lu, 0x%lx)"), + imm->desc ? imm->desc : ip->insn_mo->name, + (unsigned long) imm_expr.X_add_number, + (unsigned long) imm_expr.X_add_number); + imm_expr.X_add_number &= imm->mask; + } + ip->insn_opcode |= ((unsigned long) imm_expr.X_add_number + << imm->shift); + imm_expr.X_op = O_absent; + s = expr_end; + } + continue; + case 'A': /* ins/ext position, becomes LSB. */ limlo = 0; limhi = 31; |