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authorYunQiang Su <yunqiang.su@cipunited.com>2024-07-19 19:01:52 +0100
committerMaciej W. Rozycki <macro@redhat.com>2024-07-19 19:01:52 +0100
commit73a833412e2d613be460a0daa3fc33568bec6c13 (patch)
tree5cd4f5fbf6dd2c148b4b8d3127d5d76664181a1c
parent31bd9f4682d611387993a8127a25ab42252b59c9 (diff)
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MIPS/opcodes: Remove the regular MIPS "+t" operand code
The semantics of the regular MIPS "+t" operand code is exactly the same as that of the "E" operand code, so replace the former with the latter in the single MFTC0 instruction with implicit 'sel' == 0 encoding where it's used, matching the encoding with explicit 'sel' as well as other instructions.
-rw-r--r--include/opcode/mips.h3
-rw-r--r--opcodes/mips-opc.c3
2 files changed, 2 insertions, 4 deletions
diff --git a/include/opcode/mips.h b/include/opcode/mips.h
index f80110f..1e4b3e2 100644
--- a/include/opcode/mips.h
+++ b/include/opcode/mips.h
@@ -653,7 +653,6 @@ mips_opcode_32bit_p (const struct mips_opcode *mo)
"*" 2 bit dsp/smartmips accumulator register (OP_*_MTACC_T)
"&" 2 bit dsp/smartmips accumulator register (OP_*_MTACC_D)
"y" 5 bit control target register (OP_*_RT)
- "+t" 5 bit coprocessor 0 destination register (OP_*_RT)
MCU ASE usage:
"~" 12 bit offset (OP_*_OFFSET12)
@@ -760,7 +759,7 @@ mips_opcode_32bit_p (const struct mips_opcode *mo)
"1234567890"
"~!@#$%^&*|:'";\"
"ABCEFGHIJKLMNOPQRSTUVWXZ"
- "abcdefghijklmnopqrstuvwxyz"
+ "abcdefghijklmnopqrs uvwxyz"
Extension character sequences used so far ("-" followed by the
following), for quick reference when adding more:
diff --git a/opcodes/mips-opc.c b/opcodes/mips-opc.c
index 6389301..734a027 100644
--- a/opcodes/mips-opc.c
+++ b/opcodes/mips-opc.c
@@ -117,7 +117,6 @@ decode_mips_operand (const char *p)
case 'q': REG (0, 0, R5900_Q);
case 'r': REG (0, 0, R5900_R);
case 's': MSB (5, 11, 0, false, 31); /* (0 .. 31) */
- case 't': REG (5, 16, COPRO);
case 'u': SPECIAL (3, 16, IMM_INDEX);
case 'v': SPECIAL (2, 16, IMM_INDEX);
case 'w': SPECIAL (1, 16, IMM_INDEX);
@@ -1406,7 +1405,7 @@ const struct mips_opcode mips_builtin_opcodes[] =
{"mfps", "t,P", 0x4000c800, 0xffe0ffc1, WR_1|RD_C0|LC, 0, M1|N5|EE, 0, 0 },
{"mftacx", "d", 0x41020021, 0xffff07ff, WR_1|RD_a|TRAP, 0, 0, MT32, 0 },
{"mftacx", "d,*", 0x41020021, 0xfff307ff, WR_1|RD_a|TRAP, 0, 0, MT32, 0 },
-{"mftc0", "d,+t", 0x41000000, 0xffe007ff, WR_1|RD_C0|TRAP|LC, 0, 0, MT32, 0 },
+{"mftc0", "d,E", 0x41000000, 0xffe007ff, WR_1|RD_C0|TRAP|LC, 0, 0, MT32, 0 },
{"mftc0", "d,E,H", 0x41000000, 0xffe007f8, WR_1|RD_C0|TRAP|LC, 0, 0, MT32, 0 },
{"mftc1", "d,T", 0x41000022, 0xffe007ff, WR_1|RD_2|TRAP|LC|FP_S, 0, 0, MT32, 0 },
{"mftc1", "d,E", 0x41000022, 0xffe007ff, WR_1|RD_2|TRAP|LC|FP_S, 0, 0, MT32, 0 },