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MIPS16: Add ASMACRO instruction support

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Add ASMACRO instruction support as per the MIPS16e ASE architecture
specifications [1][2], completing MIPS16e instruction set support.

[1] "MIPS32 Architecture for Programmers, Volume IV-a: The MIPS16e
    Application-Specific Extension to the MIPS32 Architecture", MIPS
    Technologies, Inc., Document Number: MD00076, Revision 2.63, July
    16, 2013, Section 4.1 "MIPS16e Instruction Descriptions", p. 65

[2] "MIPS64 Architecture for Programmers, Volume IV-a: The MIPS16e
    Application-Specific Extension to the MIPS64 Architecture", MIPS
    Technologies, Inc., Document Number: MD00077, Revision 2.60, June
    25, 2008, Section 1.1 "MIPS16e Instruction Descriptions", p. 66

	include/
	* opcode/mips.h: Document `0', `1', `2', `3', `4' and `s'
	operand codes.

	opcodes/
	* mips16-opc.c (decode_mips16_operand): Add `0', `1', `2', `3',
	`4' and `s' operand codes.
	(mips16_opcodes): Add "asmacro" entry.

	binutils/
	* testsuite/binutils-all/mips/mips16-extend-insn.d: Update for
	ASMACRO support.

	gas/
	* testsuite/gas/mips/mips16-asmacro.d: New test.
	* testsuite/gas/mips/mips16-32@mips16-asmacro.d: New test.
	* testsuite/gas/mips/mips16-64@mips16-asmacro.d: New test.
	* testsuite/gas/mips/mips16-asmacro.s: New test source.
	* testsuite/gas/mips/mips.exp: Run the new tests.
This commit is contained in:
Maciej W. Rozycki
2016-12-23 19:40:51 +00:00
parent bdd152861c
commit 5284e471d5
12 changed files with 116 additions and 10 deletions
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10
include/opcode/mips.h
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@@ -1809,12 +1809,18 @@ extern int bfd_mips_num_opcodes;
"R" return address register ($ra or $31)
"X" 5 bit MIPS register (MIPS16OP_*_REGR32)
"Y" 5 bit MIPS register (MIPS16OP_*_REG32R)
"0" 5-bit ASMACRO p0 immediate
"1" 3-bit ASMACRO p1 immediate
"2" 3-bit ASMACRO p2 immediate
"3" 5-bit ASMACRO p3 immediate
"4" 3-bit ASMACRO p4 immediate
"6" 6 bit unsigned break code (MIPS16OP_*_IMM6)
"a" 26 bit jump address
"i" likewise, but flips bit 0
"e" 11 bit extension value
"l" register list for entry instruction
"L" register list for exit instruction
"s" 3-bit ASMACRO select immediate
"I" an immediate value used for macros
@@ -1844,10 +1850,10 @@ 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:
" 56 8 "
"0123456 8 "
".[]<"
"ABCDEF HI KLM P RS UVWXYZ"
"a e ijklm pq vwxyz"
"a e ijklm pq s vwxyz"
*/
/* Save/restore encoding for the args field when all 4 registers are