MIPS16/opcodes: Free up `M' operand code

The `M' and `m' MIPS16 operand codes are functionally the same, denoting
a 7-bit register list that is encoded the same way for both SAVE and
RESTORE.  Use `m' for both instructions then, making `M' available for a
different use.

	opcodes/
	* mips16-opc.c (decode_mips16_operand) <'M'>: Remove case.
	(mips16_opcodes): Replace `M' with `m' for "restore".

	include/
	* opcode/mips.h: Remove `M' operand code.

diff --git a/include/ChangeLog b/include/ChangeLog
index 2563ab5..e9ac49a 100644 (file)
--- a/include/ChangeLog
+++ b/include/ChangeLog
@@ -1,3 +1,7 @@
+2018-02-20  Maciej W. Rozycki  <macro@mips.com>
+
+       * opcode/mips.h: Remove `M' operand code.
+
 2018-02-12  Zebediah Figura  <z.figura12@gmail.com>
 
        * coff/msdos.h: New header.

diff --git a/include/opcode/mips.h b/include/opcode/mips.h
index 5eea72f..a113893 100644 (file)
--- a/include/opcode/mips.h
+++ b/include/opcode/mips.h
@@ -1889,13 +1889,12 @@ extern int bfd_mips_num_opcodes;
    "A" 8 bit PC relative address * 4 (MIPS16OP_*_IMM8)
    "B" 5 bit PC relative address * 8 (MIPS16OP_*_IMM5)
    "E" 5 bit PC relative address * 4 (MIPS16OP_*_IMM5)
-   "m" 7 bit register list for save instruction (18 bit extended)
-   "M" 7 bit register list for restore instruction (18 bit extended)
+   "m" 7 bit register list for SAVE/RESTORE instruction (18 bit extended)
 
    Characters used so far, for quick reference when adding more:
    "0123456 89"
    ".[]<>"
-   "ABCDEFGHI KLMNOPQRSTUVWXYZ"
+   "ABCDEFGHI KL NOPQRSTUVWXYZ"
    "abcde   ijklmnopqrs uvwxyz"
   */
 

diff --git a/opcodes/ChangeLog b/opcodes/ChangeLog
index 9469b82..58d352d 100644 (file)
--- a/opcodes/ChangeLog
+++ b/opcodes/ChangeLog
@@ -1,3 +1,8 @@
+2018-02-20  Maciej W. Rozycki  <macro@mips.com>
+
+       * mips16-opc.c (decode_mips16_operand) <'M'>: Remove case.
+       (mips16_opcodes): Replace `M' with `m' for "restore".
+
 2018-02-19  Thomas Preud'homme  <thomas.preudhomme@arm.com>
 
        * arm-dis.c (thumb_opcodes): Fix BXNS mask.

diff --git a/opcodes/mips16-opc.c b/opcodes/mips16-opc.c
index 2c32073..b9071a5 100644 (file)
--- a/opcodes/mips16-opc.c
+++ b/opcodes/mips16-opc.c
@@ -62,7 +62,6 @@ decode_mips16_operand (char type, bfd_boolean extended_p)
 
     case 'G': SPECIAL (0, 0, REG28);
     case 'L': SPECIAL (6, 5, ENTRY_EXIT_LIST);
-    case 'M': SPECIAL (7, 0, SAVE_RESTORE_LIST);
     case 'N': REG (5, 0, COPRO);
     case 'O': UINT (3, 21);
     case 'Q': REG (5, 16, HW);
@@ -445,7 +444,7 @@ const struct mips_opcode mips16_opcodes[] =
 {"xor",            "x,y",      0xe80e, 0xf81f,         MOD_1|RD_2,             SH,             I1,     0,      0 },
 {"xori",    "x,u",     0xf0006880, 0xf800f8e0, WR_1,                   0,              0,      E2,     0 },
   /* MIPS16e additions; see above for compact jumps.  */
-{"restore", "M",       0x6400, 0xff80,         WR_31|NODS,             MOD_SP,         I32,    0,      0 },
+{"restore", "m",       0x6400, 0xff80,         WR_31|NODS,             MOD_SP,         I32,    0,      0 },
 {"save",    "m",       0x6480, 0xff80,         NODS,                   RD_31|MOD_SP,   I32,    0,      0 },
 {"sdbbp",   "",                0xe801, 0xffff,         TRAP,                   SH,             I32,    0,      0 },
 {"sdbbp",   "6",       0xe801, 0xf81f,         TRAP,                   SH,             I32,    0,      0 },