diff options
Diffstat (limited to 'gas/config/tc-riscv.c')
| -rw-r--r-- | gas/config/tc-riscv.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/gas/config/tc-riscv.c b/gas/config/tc-riscv.c index e19142d..3fb7727 100644 --- a/gas/config/tc-riscv.c +++ b/gas/config/tc-riscv.c @@ -71,6 +71,7 @@ enum riscv_csr_class CSR_CLASS_I_32, /* rv32 only */ CSR_CLASS_F, /* f-ext only */ CSR_CLASS_ZKR, /* zkr only */ + CSR_CLASS_ZCMT, /* zcmt only */ CSR_CLASS_V, /* rvv only */ CSR_CLASS_DEBUG, /* debug CSR */ CSR_CLASS_H, /* hypervisor */ @@ -1070,6 +1071,9 @@ riscv_csr_address (const char *csr_name, case CSR_CLASS_ZKR: extension = "zkr"; break; + case CSR_CLASS_ZCMT: + extension = "zcmt"; + break; case CSR_CLASS_V: extension = "zve32x"; break; @@ -1650,6 +1654,9 @@ validate_riscv_insn (const struct riscv_opcode *opc, int length) case 'p': used_bits |= ENCODE_ZCMP_SPIMM (-1U); break; /* Register list operand for cm.push and cm.pop. */ case 'r': USE_BITS (OP_MASK_REG_LIST, OP_SH_REG_LIST); break; + /* Table jump used by cm.jt or cm.jalt. */ + case 'i': + case 'I': used_bits |= ENCODE_ZCMT_INDEX (-1U); break; case 'f': break; default: goto unknown_validate_operand; @@ -3922,6 +3929,28 @@ riscv_ip (char *str, struct riscv_cl_insn *ip, expressionS *imm_expr, break; INSERT_OPERAND (SREG2, *ip, regno % 8); continue; + case 'I': /* index operand of cm.jt. The range is from 0 to 31. */ + my_getSmallExpression (imm_expr, imm_reloc, asarg, p); + if (imm_expr->X_op != O_constant + || imm_expr->X_add_number < 0 + || imm_expr->X_add_number > 31) + { + as_bad ("bad index value for cm.jt, range: [0, 31]"); + break; + } + ip->insn_opcode |= ENCODE_ZCMT_INDEX (imm_expr->X_add_number); + goto rvc_imm_done; + case 'i': /* index operand of cm.jalt. The range is from 32 to 255. */ + my_getSmallExpression (imm_expr, imm_reloc, asarg, p); + if (imm_expr->X_op != O_constant + || imm_expr->X_add_number < 32 + || imm_expr->X_add_number > 255) + { + as_bad ("bad index value for cm.jalt, range: [32, 255]"); + break; + } + ip->insn_opcode |= ENCODE_ZCMT_INDEX (imm_expr->X_add_number); + goto rvc_imm_done; default: goto unknown_riscv_ip_operand; } |