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MIPS: Make the CODE10 operand code consistent between ISAs

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This change moves the microMIPS 10-bit uninterpreted immediate code
embedded at bits 25..16 in the SYSCALL, WAIT, SDBBP and HYPCALL
instructions from `B' over to `+J' which is the operand code used in
the standard MIPS instruction set for a similar code embedded at bits
20..11, currently used by HYPCALL only in that set.

	opcodes/
	* micromips-opc.c (decode_micromips_operand): Rename `B' to `+J'.
	(micromips_opcodes): Use "+J" in place of "B" for "hypcall",
	"sdbbp", "syscall" and "wait".

	include/opcode/
	* mips.h: Document the move of `MICROMIPSOP_*_CODE10' from `B'
	over to `+J'.
This commit is contained in:
Maciej W. Rozycki 2014-08-26 13:44:34 +01:00
parent 0db377d09c
commit 5575639b8d
4 changed files with 20 additions and 8 deletions
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7
include/opcode/mips.h
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@ -2056,7 +2056,6 @@ extern const int bfd_mips16_num_opcodes;
"y" 5-bit source 3 register for ALNV.PS (MICROMIPSOP_*_RS3)
"z" must be zero register
"C" 23-bit coprocessor function code (MICROMIPSOP_*_COPZ)
"B" 10-bit syscall/wait function code (MICROMIPSOP_*_CODE10)
"K" 5-bit Hardware Register (RDHWR instruction) (MICROMIPSOP_*_RS)
"+A" 5-bit INS/EXT/DINS/DEXT/DINSM/DEXTM position, which becomes
@ -2081,6 +2080,8 @@ extern const int bfd_mips16_num_opcodes;
"+H" 5-bit DEXTU size, which becomes MSBD (MICROMIPSOP_*_EXTMSBD).
Requires that "+A" or "+E" occur first to set position.
Enforces: 32 < (pos+size) <= 64.
"+J" 10-bit SYSCALL/WAIT/SDBBP/HYPCALL function code
(MICROMIPSOP_*_CODE10)
PC-relative addition (ADDIUPC) instruction:
"mQ" 23-bit offset (-4194304 .. 4194303) << 2 (MICROMIPSOP_*_IMMQ)
@ -2160,14 +2161,14 @@ extern const int bfd_mips16_num_opcodes;
Characters used so far, for quick reference when adding more:
"12345678 0"
"<>(),+.@\^|~"
"ABCDEFGHI KLMN RST V "
"A CDEFGHI KLMN RST V "
"abcd f hijklmnopqrstuvw yz"
Extension character sequences used so far ("+" followed by the
following), for quick reference when adding more:
""
"~!@#$%^&*|"
"ABCEFGHTUVW"
"ABCEFGHJTUVW"
"dehijklnouvwx"
Extension character sequences used so far ("m" followed by the