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AArch64: Refactor err_type.

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Previously the ERR_ values were defined as different constants, to make this a
bit more type safe and so they can be more easily re-used I'm changing them into
an actual enum and updating any usages.

include/

	* opcode/aarch64.h (enum err_type): New.
	(aarch64_decode_insn): Use it.

opcodes/

	* aarch64-dis.c (ERR_OK, ERR_UND, ERR_UNP, ERR_NYI): Remove.
	(aarch64_decode_insn, print_insn_aarch64_word): Use err_type.
This commit is contained in:
Tamar Christina
2018-10-03 18:35:15 +01:00
parent 7e84b55d8f
commit 1d4823943d
4 changed files with 29 additions and 14 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
include/ChangeLog
View File

@ -1,3 +1,8 @@
2018-10-03 Tamar Christina <tamar.christina@arm.com>
* opcode/aarch64.h (enum err_type): New.
(aarch64_decode_insn): Use it.
2018-10-03 Tamar Christina <tamar.christina@arm.com> 2018-10-03 Tamar Christina <tamar.christina@arm.com>
* opcode/aarch64.h (struct aarch64_instr_sequence): New. * opcode/aarch64.h (struct aarch64_instr_sequence): New.

12
include/opcode/aarch64.h
View File

@ -641,6 +641,16 @@ enum aarch64_op
OP_TOTAL_NUM, /* Pseudo. */ OP_TOTAL_NUM, /* Pseudo. */
}; };
/* Error types. */
enum err_type
{
ERR_OK,
ERR_UND,
ERR_UNP,
ERR_NYI,
ERR_NR_ENTRIES
};
/* Maximum number of operands an instruction can have. */ /* Maximum number of operands an instruction can have. */
#define AARCH64_MAX_OPND_NUM 6 #define AARCH64_MAX_OPND_NUM 6
/* Maximum number of qualifier sequences an instruction can have. */ /* Maximum number of qualifier sequences an instruction can have. */
@ -1187,7 +1197,7 @@ aarch64_stack_pointer_p (const aarch64_opnd_info *);
extern int extern int
aarch64_zero_register_p (const aarch64_opnd_info *); aarch64_zero_register_p (const aarch64_opnd_info *);
extern int extern enum err_type
aarch64_decode_insn (aarch64_insn, aarch64_inst *, bfd_boolean, aarch64_decode_insn (aarch64_insn, aarch64_inst *, bfd_boolean,
aarch64_operand_error *errors); aarch64_operand_error *errors);

5
opcodes/ChangeLog
View File

@ -1,3 +1,8 @@
2018-10-03 Tamar Christina <tamar.christina@arm.com>
* aarch64-dis.c (ERR_OK, ERR_UND, ERR_UNP, ERR_NYI): Remove.
(aarch64_decode_insn, print_insn_aarch64_word): Use err_type.
2018-10-03 Tamar Christina <tamar.christina@arm.com> 2018-10-03 Tamar Christina <tamar.christina@arm.com>
* aarch64-asm.c (aarch64_opcode_encode): Add insn_sequence. * aarch64-asm.c (aarch64_opcode_encode): Add insn_sequence.

19
opcodes/aarch64-dis.c
View File

@ -26,11 +26,6 @@
#include "aarch64-dis.h" #include "aarch64-dis.h"
#include "elf-bfd.h" #include "elf-bfd.h"
#define ERR_OK 0
#define ERR_UND -1
#define ERR_UNP -3
#define ERR_NYI -5
#define INSNLEN 4 #define INSNLEN 4
/* Cached mapping symbol state. */ /* Cached mapping symbol state. */
@ -2945,7 +2940,7 @@ user_friendly_fixup (aarch64_inst *inst)
opcode may be filled in *INSN if NOALIASES_P is FALSE. Return zero on opcode may be filled in *INSN if NOALIASES_P is FALSE. Return zero on
success. */ success. */
int enum err_type
aarch64_decode_insn (aarch64_insn insn, aarch64_inst *inst, aarch64_decode_insn (aarch64_insn insn, aarch64_inst *inst,
bfd_boolean noaliases_p, bfd_boolean noaliases_p,
aarch64_operand_error *errors) aarch64_operand_error *errors)
@ -3097,15 +3092,15 @@ print_insn_aarch64_word (bfd_vma pc,
struct disassemble_info *info, struct disassemble_info *info,
aarch64_operand_error *errors) aarch64_operand_error *errors)
{ {
static const char *err_msg[6] = static const char *err_msg[ERR_NR_ENTRIES+1] =
{ {
[ERR_OK] = "_", [ERR_OK] = "_",
[-ERR_UND] = "undefined", [ERR_UND] = "undefined",
[-ERR_UNP] = "unpredictable", [ERR_UNP] = "unpredictable",
[-ERR_NYI] = "NYI" [ERR_NYI] = "NYI"
}; };
int ret; enum err_type ret;
aarch64_inst inst; aarch64_inst inst;
info->insn_info_valid = 1; info->insn_info_valid = 1;
@ -3139,7 +3134,7 @@ print_insn_aarch64_word (bfd_vma pc,
/* Handle undefined instructions. */ /* Handle undefined instructions. */
info->insn_type = dis_noninsn; info->insn_type = dis_noninsn;
(*info->fprintf_func) (info->stream,".inst\t0x%08x ; %s", (*info->fprintf_func) (info->stream,".inst\t0x%08x ; %s",
word, err_msg[-ret]); word, err_msg[ret]);
break; break;
case ERR_OK: case ERR_OK:
user_friendly_fixup (&inst); user_friendly_fixup (&inst);