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MIPS/opcodes: Output thread context registers numerically with MFTR/MTTR

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We print MFTR and MTTR instructions' thread context register operand in
disassembly using the ABI name the register number would correspond to
should the targeted register be a general-purpose register.

However in most cases it is wrong, because general-purpose registers are
only referred when the 'u' and 'sel' operands are 1 and 0 respectively.
And even in these cases the MFGPR and MTGPR aliases take precedence over
the corresponding generic instruction encodings, so you won't see the
valid case to normally trigger.

Conversely decoding the thread context register operand numerically is
always valid, so switch to using it.  Adjust test coverage accordingly.
This commit is contained in:
Maciej W. Rozycki 2024-07-19 19:01:52 +01:00
parent 2a172ea63d
commit 31bd9f4682
2 changed files with 34 additions and 34 deletions
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64
gas/testsuite/gas/mips/mips32-mt.d
View File

@ -574,30 +574,30 @@ Disassembly of section .text:
0+08d0 <[^>]*> 410e6805 mftc0 t5,\$14,5
0+08d4 <[^>]*> 410e6806 mftc0 t5,\$14,6
0+08d8 <[^>]*> 410e6807 mftc0 t5,\$14,7
0+08dc <[^>]*> 410e6810 mftr t5,t6,0,0,1
0+08e0 <[^>]*> 410e6811 mftr t5,t6,0,1,1
0+08e4 <[^>]*> 410e6812 mftr t5,t6,0,2,1
0+08e8 <[^>]*> 410e6813 mftr t5,t6,0,3,1
0+08ec <[^>]*> 410e6814 mftr t5,t6,0,4,1
0+08f0 <[^>]*> 410e6815 mftr t5,t6,0,5,1
0+08f4 <[^>]*> 410e6816 mftr t5,t6,0,6,1
0+08f8 <[^>]*> 410e6817 mftr t5,t6,0,7,1
0+08dc <[^>]*> 410e6810 mftr t5,\$14,0,0,1
0+08e0 <[^>]*> 410e6811 mftr t5,\$14,0,1,1
0+08e4 <[^>]*> 410e6812 mftr t5,\$14,0,2,1
0+08e8 <[^>]*> 410e6813 mftr t5,\$14,0,3,1
0+08ec <[^>]*> 410e6814 mftr t5,\$14,0,4,1
0+08f0 <[^>]*> 410e6815 mftr t5,\$14,0,5,1
0+08f4 <[^>]*> 410e6816 mftr t5,\$14,0,6,1
0+08f8 <[^>]*> 410e6817 mftr t5,\$14,0,7,1
0+08fc <[^>]*> 410e6820 mftgpr t5,t6
0+0900 <[^>]*> 410e6821 mftacx t5,\$ac3
0+0904 <[^>]*> 410e6822 mftc1 t5,\$f14
0+0908 <[^>]*> 410e6823 cftc1 t5,\$14
0+090c <[^>]*> 410e6824 mftc2 t5,\$14
0+0910 <[^>]*> 410e6825 cftc2 t5,\$14
0+0914 <[^>]*> 410e6826 mftr t5,t6,1,6,0
0+0918 <[^>]*> 410e6827 mftr t5,t6,1,7,0
0+091c <[^>]*> 410e6830 mftr t5,t6,1,0,1
0+0920 <[^>]*> 410e6831 mftr t5,t6,1,1,1
0+0914 <[^>]*> 410e6826 mftr t5,\$14,1,6,0
0+0918 <[^>]*> 410e6827 mftr t5,\$14,1,7,0
0+091c <[^>]*> 410e6830 mftr t5,\$14,1,0,1
0+0920 <[^>]*> 410e6831 mftr t5,\$14,1,1,1
0+0924 <[^>]*> 410e6832 mfthc1 t5,\$f14
0+0928 <[^>]*> 410e6833 mftr t5,t6,1,3,1
0+0928 <[^>]*> 410e6833 mftr t5,\$14,1,3,1
0+092c <[^>]*> 410e6834 mfthc2 t5,\$14
0+0930 <[^>]*> 410e6835 mftr t5,t6,1,5,1
0+0934 <[^>]*> 410e6836 mftr t5,t6,1,6,1
0+0938 <[^>]*> 410e6837 mftr t5,t6,1,7,1
0+0930 <[^>]*> 410e6835 mftr t5,\$14,1,5,1
0+0934 <[^>]*> 410e6836 mftr t5,\$14,1,6,1
0+0938 <[^>]*> 410e6837 mftr t5,\$14,1,7,1
0+093c <[^>]*> 418d7000 mttc0 t5,c0_epc
0+0940 <[^>]*> 418d7001 mttc0 t5,\$14,1
0+0944 <[^>]*> 418d7002 mttc0 t5,\$14,2
@ -606,29 +606,29 @@ Disassembly of section .text:
0+0950 <[^>]*> 418d7005 mttc0 t5,\$14,5
0+0954 <[^>]*> 418d7006 mttc0 t5,\$14,6
0+0958 <[^>]*> 418d7007 mttc0 t5,\$14,7
0+095c <[^>]*> 418d7010 mttr t5,t6,0,0,1
0+0960 <[^>]*> 418d7011 mttr t5,t6,0,1,1
0+0964 <[^>]*> 418d7012 mttr t5,t6,0,2,1
0+0968 <[^>]*> 418d7013 mttr t5,t6,0,3,1
0+096c <[^>]*> 418d7014 mttr t5,t6,0,4,1
0+0970 <[^>]*> 418d7015 mttr t5,t6,0,5,1
0+0974 <[^>]*> 418d7016 mttr t5,t6,0,6,1
0+0978 <[^>]*> 418d7017 mttr t5,t6,0,7,1
0+095c <[^>]*> 418d7010 mttr t5,\$14,0,0,1
0+0960 <[^>]*> 418d7011 mttr t5,\$14,0,1,1
0+0964 <[^>]*> 418d7012 mttr t5,\$14,0,2,1
0+0968 <[^>]*> 418d7013 mttr t5,\$14,0,3,1
0+096c <[^>]*> 418d7014 mttr t5,\$14,0,4,1
0+0970 <[^>]*> 418d7015 mttr t5,\$14,0,5,1
0+0974 <[^>]*> 418d7016 mttr t5,\$14,0,6,1
0+0978 <[^>]*> 418d7017 mttr t5,\$14,0,7,1
0+097c <[^>]*> 418d7020 mttgpr t5,t6
0+0980 <[^>]*> 418d7021 mttacx t5,\$ac3
0+0984 <[^>]*> 418d7022 mttc1 t5,\$f14
0+0988 <[^>]*> 418d7023 cttc1 t5,\$14
0+098c <[^>]*> 418d7024 mttc2 t5,\$14
0+0990 <[^>]*> 418d7025 cttc2 t5,\$14
0+0994 <[^>]*> 418d7026 mttr t5,t6,1,6,0
0+0998 <[^>]*> 418d7027 mttr t5,t6,1,7,0
0+099c <[^>]*> 418d7030 mttr t5,t6,1,0,1
0+09a0 <[^>]*> 418d7031 mttr t5,t6,1,1,1
0+0994 <[^>]*> 418d7026 mttr t5,\$14,1,6,0
0+0998 <[^>]*> 418d7027 mttr t5,\$14,1,7,0
0+099c <[^>]*> 418d7030 mttr t5,\$14,1,0,1
0+09a0 <[^>]*> 418d7031 mttr t5,\$14,1,1,1
0+09a4 <[^>]*> 418d7032 mtthc1 t5,\$f14
0+09a8 <[^>]*> 418d7033 mttr t5,t6,1,3,1
0+09a8 <[^>]*> 418d7033 mttr t5,\$14,1,3,1
0+09ac <[^>]*> 418d7034 mtthc2 t5,\$14
0+09b0 <[^>]*> 418d7035 mttr t5,t6,1,5,1
0+09b4 <[^>]*> 418d7036 mttr t5,t6,1,6,1
0+09b8 <[^>]*> 418d7037 mttr t5,t6,1,7,1
0+09b0 <[^>]*> 418d7035 mttr t5,\$14,1,5,1
0+09b4 <[^>]*> 418d7036 mttr t5,\$14,1,6,1
0+09b8 <[^>]*> 418d7037 mttr t5,\$14,1,7,1
0+09bc <[^>]*> 00000140 pause
\.\.\.

4
opcodes/mips-opc.c
View File

@ -1420,7 +1420,7 @@ const struct mips_opcode mips_builtin_opcodes[] =
{"mfthi", "d,*", 0x41010021, 0xfff307ff, WR_1|RD_a|TRAP, 0, 0, MT32, 0 },
{"mftlo", "d", 0x41000021, 0xffff07ff, WR_1|RD_a|TRAP, 0, 0, MT32, 0 },
{"mftlo", "d,*", 0x41000021, 0xfff307ff, WR_1|RD_a|TRAP, 0, 0, MT32, 0 },
{"mftr", "d,t,!,H,$", 0x41000000, 0xffe007c8, WR_1|TRAP, 0, 0, MT32, 0 },
{"mftr", "d,E,!,H,$", 0x41000000, 0xffe007c8, WR_1|TRAP, 0, 0, MT32, 0 },
{"mfc0", "t,G", 0x40000000, 0xffe007ff, WR_1|RD_C0|LC, 0, I1, 0, 0 },
{"mfc0", "t,G,H", 0x40000000, 0xffe007f8, WR_1|RD_C0|LC, 0, I32, 0, 0 },
{"mfgc0", "t,G", 0x40600000, 0xffe007ff, WR_1|RD_C0|LC, 0, 0, IVIRT, 0 },
@ -1577,7 +1577,7 @@ const struct mips_opcode mips_builtin_opcodes[] =
{"mtthi", "t,&", 0x41800821, 0xffe09fff, RD_1|WR_a|TRAP, 0, 0, MT32, 0 },
{"mttlo", "t", 0x41800021, 0xffe0ffff, RD_1|WR_a|TRAP, 0, 0, MT32, 0 },
{"mttlo", "t,&", 0x41800021, 0xffe09fff, RD_1|WR_a|TRAP, 0, 0, MT32, 0 },
{"mttr", "t,d,!,H,$", 0x41800000, 0xffe007c8, RD_1|TRAP, 0, 0, MT32, 0 },
{"mttr", "t,G,!,H,$", 0x41800000, 0xffe007c8, RD_1|TRAP, 0, 0, MT32, 0 },
{"mul.d", "D,V,T", 0x46200002, 0xffe0003f, WR_1|RD_2|RD_3|FP_D, 0, I1, 0, SF },
{"mul.s", "D,V,T", 0x46000002, 0xffe0003f, WR_1|RD_2|RD_3|FP_S, 0, I1, 0, 0 },
{"mul.ob", "X,Y,Q", 0x78000030, 0xfc20003f, WR_1|RD_2|RD_3|FP_D, 0, SB1, MX, 0 },