diff options
Diffstat (limited to 'opcodes/rx-decode.c')
| -rw-r--r-- | opcodes/rx-decode.c | 62 |
1 files changed, 49 insertions, 13 deletions
diff --git a/opcodes/rx-decode.c b/opcodes/rx-decode.c index ada3993..3a9099b 100644 --- a/opcodes/rx-decode.c +++ b/opcodes/rx-decode.c @@ -4256,8 +4256,16 @@ rx_decode_opcode (unsigned long pc AU, } SYNTAX("mul #%1, %0"); #line 602 "rx-decode.opc" - ID(mul); DR(rdst); SC(immm); F_____; - + if (immm == 1 && rdst == 0) + { + ID(nop2); + SYNTAX ("nop\t; mul\t#1, r0"); + } + else + { + ID(mul); + } + DR(rdst); SC(immm); F_____; } break; } @@ -4624,6 +4632,7 @@ rx_decode_opcode (unsigned long pc AU, int im AU = op[0] & 0x03; #line 605 "rx-decode.opc" int rdst AU = op[1] & 0x0f; + int val = IMMex(im); if (trace) { printf ("\033[33m%s\033[0m %02x %02x\n", @@ -4634,7 +4643,25 @@ rx_decode_opcode (unsigned long pc AU, } SYNTAX("mul #%1, %0"); #line 605 "rx-decode.opc" - ID(mul); DR(rdst); SC(IMMex(im)); F_____; + if (val == 1 && rdst == 0) + { + SYNTAX("nop\t; mul\t#1, r0"); + switch (im) + { + case 2: ID(nop4); break; + case 3: ID(nop5); break; + case 0: ID(nop6); break; + default: + ID(mul); + SYNTAX("mul #%1, %0"); + break; + } + } + else + { + ID(mul); + } + DR(rdst); SC(val); F_____; } break; @@ -6346,19 +6373,19 @@ rx_decode_opcode (unsigned long pc AU, if (sd == 3 && ss == 3 && sz == 2 && rsrc == 0 && rdst == 0) { ID(nop2); - rx->syntax = "nop"; + SYNTAX ("nop\t; mov.l\tr0, r0"); } else { ID(mov); sBWL(sz); F_____; if ((ss == 3) && (sd != 3)) - { - SD(ss, rdst, sz); DD(sd, rsrc, sz); - } + { + SD(ss, rdst, sz); DD(sd, rsrc, sz); + } else - { - SD(ss, rsrc, sz); DD(sd, rdst, sz); - } + { + SD(ss, rsrc, sz); DD(sd, rdst, sz); + } } } @@ -7204,7 +7231,7 @@ rx_decode_opcode (unsigned long pc AU, if (ss == 3 && rsrc == 0 && rdst == 0) { ID(nop3); - rx->syntax = "nop"; + SYNTAX ("nop\t; max\tr0, r0"); } else { @@ -10331,6 +10358,7 @@ rx_decode_opcode (unsigned long pc AU, int im AU = (op[1] >> 2) & 0x03; #line 570 "rx-decode.opc" int rdst AU = op[2] & 0x0f; + int val = IMMex (im); if (trace) { printf ("\033[33m%s\033[0m %02x %02x %02x\n", @@ -10341,8 +10369,16 @@ rx_decode_opcode (unsigned long pc AU, } SYNTAX("max #%1, %0"); #line 570 "rx-decode.opc" - ID(max); DR(rdst); SC(IMMex(im)); - + if (im == 0 && (unsigned) val == 0x80000000 && rdst == 0) + { + ID(nop7); + SYNTAX ("nop\t; max\t#0x80000000, r0"); + } + else + { + ID(max); + } + DR(rdst); SC(val); } break; case 0x50: |