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MIPS16: Reassign 0' and 4' operand codes

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Replace `0' and `4' operand codes with `.' and `F' respectively to free
up the `0'-`4' consecutive range.  No functional change.

	gas/
	* config/tc-mips.c (mips16_macro_build): Replace `0' and `4'
	operand codes with `.' and `F' respectively.
	(mips16_macro): Likewise.

	include/
	* opcode/mips.h: Replace `0' and `4' operand codes with `.' and
	`F' respectively.

	opcodes/
	* mips16-opc.c (decode_mips16_operand): Replace `0' and `4'
	operand codes with `.' and `F' respectively.
	(mips16_opcodes): Likewise.
This commit is contained in:
Maciej W. Rozycki 2016-12-23 17:05:01 +00:00
parent 0674ee5dad
commit d8722d7641
6 changed files with 43 additions and 25 deletions
Download patch file Download diff file Expand all files Collapse all files

10
include/opcode/mips.h
View file

@ -1803,7 +1803,7 @@ extern int bfd_mips_num_opcodes;
"Z" 3 bit register (MIPS16OP_*_MOVE32Z)
"v" 3 bit same register as source and destination (MIPS16OP_*_RX)
"w" 3 bit same register as source and destination (MIPS16OP_*_RY)
"0" zero register ($0)
"." zero register ($0)
"S" stack pointer ($sp or $29)
"P" program counter
"R" return address register ($ra or $31)
@ -1823,8 +1823,8 @@ extern int bfd_mips_num_opcodes;
"<" 3 bit unsigned shift count * 0 (MIPS16OP_*_RZ) (full 5 bit unsigned)
"[" 3 bit unsigned shift count * 0 (MIPS16OP_*_RZ) (full 6 bit unsigned)
"]" 3 bit unsigned shift count * 0 (MIPS16OP_*_RX) (full 6 bit unsigned)
"4" 4 bit signed immediate * 0 (MIPS16OP_*_IMM4) (full 15 bit signed)
"5" 5 bit unsigned immediate * 0 (MIPS16OP_*_IMM5)
"F" 4 bit signed immediate * 0 (MIPS16OP_*_IMM4) (full 15 bit signed)
"H" 5 bit unsigned immediate * 2 (MIPS16OP_*_IMM5)
"W" 5 bit unsigned immediate * 4 (MIPS16OP_*_IMM5)
"D" 5 bit unsigned immediate * 8 (MIPS16OP_*_IMM5)
@ -1844,9 +1844,9 @@ extern int bfd_mips_num_opcodes;
"M" 7 bit register list for restore instruction (18 bit extended)
Characters used so far, for quick reference when adding more:
" 456 8 0"
"[]<"
"ABCDE HI KLM P RS UVWXYZ"
" 56 8 "
".[]<"
"ABCDEF HI KLM P RS UVWXYZ"
"a e ijklm pq vwxyz"
*/