diff options
Diffstat (limited to 'include/opcode/riscv.h')
| -rw-r--r-- | include/opcode/riscv.h | 23 |
1 files changed, 20 insertions, 3 deletions
diff --git a/include/opcode/riscv.h b/include/opcode/riscv.h index 4acc25cee23..bfb96c86b68 100644 --- a/include/opcode/riscv.h +++ b/include/opcode/riscv.h @@ -294,6 +294,23 @@ static const char * const riscv_pred_succ[16] = /* The maximal number of subset can be required. */ #define MAX_SUBSET_NUM 4 +/* All RISC-V instructions belong to at least one of these classes. */ + +enum riscv_insn_class + { + INSN_CLASS_NONE, + + INSN_CLASS_I, + INSN_CLASS_C, + INSN_CLASS_A, + INSN_CLASS_M, + INSN_CLASS_F, + INSN_CLASS_D, + INSN_CLASS_D_AND_C, + INSN_CLASS_F_AND_C, + INSN_CLASS_Q, + }; + /* This structure holds information for a particular instruction. */ struct riscv_opcode @@ -302,9 +319,9 @@ struct riscv_opcode const char *name; /* The requirement of xlen for the instruction, 0 if no requirement. */ unsigned xlen_requirement; - /* An array of ISA subset name (I, M, A, F, D, Xextension), must ended - with a NULL pointer sential. */ - const char *subset[MAX_SUBSET_NUM]; + /* Class to which this instruction belongs. Used to decide whether or + not this instruction is legal in the current -march context. */ + enum riscv_insn_class insn_class; /* A string describing the arguments for this instruction. */ const char *args; /* The basic opcode for the instruction. When assembling, this |