diff options
Diffstat (limited to 'opcodes/aarch64-asm.c')
| -rw-r--r-- | opcodes/aarch64-asm.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/opcodes/aarch64-asm.c b/opcodes/aarch64-asm.c index 67c9b6e..06d428b 100644 --- a/opcodes/aarch64-asm.c +++ b/opcodes/aarch64-asm.c @@ -22,6 +22,7 @@ #include <stdarg.h> #include "libiberty.h" #include "aarch64-asm.h" +#include "opintl.h" /* Utilities. */ @@ -785,6 +786,36 @@ aarch64_ins_sysreg (const aarch64_operand *self ATTRIBUTE_UNUSED, const aarch64_inst *inst, aarch64_operand_error *detail ATTRIBUTE_UNUSED) { + /* If a system instruction check if we have any restrictions on which + registers it can use. */ + if (inst->opcode->iclass == ic_system) + { + uint64_t opcode_flags + = inst->opcode->flags & (F_SYS_READ | F_SYS_WRITE); + uint32_t sysreg_flags + = info->sysreg.flags & (F_REG_READ | F_REG_WRITE); + + /* Check to see if it's read-only, else check if it's write only. + if it's both or unspecified don't care. */ + if (opcode_flags == F_SYS_READ + && sysreg_flags + && sysreg_flags != F_REG_READ) + { + detail->kind = AARCH64_OPDE_SYNTAX_ERROR; + detail->error = _("specified register cannot be read from"); + detail->index = info->idx; + detail->non_fatal = TRUE; + } + else if (opcode_flags == F_SYS_WRITE + && sysreg_flags + && sysreg_flags != F_REG_WRITE) + { + detail->kind = AARCH64_OPDE_SYNTAX_ERROR; + detail->error = _("specified register cannot be written to"); + detail->index = info->idx; + detail->non_fatal = TRUE; + } + } /* op0:op1:CRn:CRm:op2 */ insert_fields (code, info->sysreg.value, inst->opcode->mask, 5, FLD_op2, FLD_CRm, FLD_CRn, FLD_op1, FLD_op0); |