diff options
| author | Pixel <> | 2001-04-17 03:50:21 +0000 |
|---|---|---|
| committer | Pixel <> | 2001-04-17 03:50:21 +0000 |
| commit | 1e6cd6c406e5898f2c661adce55c8dd440e36cd5 (patch) | |
| tree | 404dbddb525cbdae3fa3e0a961e76660fe362806 /lib/simulator.c | |
| parent | 62879bdb97d41131f5fc21ae394361566102f249 (diff) | |
GROUUUUUUU
Diffstat (limited to 'lib/simulator.c')
| -rw-r--r-- | lib/simulator.c | 25 |
1 files changed, 19 insertions, 6 deletions
diff --git a/lib/simulator.c b/lib/simulator.c index 40c3431..729e379 100644 --- a/lib/simulator.c +++ b/lib/simulator.c @@ -25,7 +25,9 @@ Uint32 LireInstruction(void) void IncrementeCompteurOrdinal(void) { + Uint32 of = LireRegistreFLAG(); EcrireRegistrePC(AdditionNonSigne(LireRegistrePC(), 1)); + EcrireRegistreFLAG(of); } static FILE *openfilereading(char *name) @@ -96,7 +98,7 @@ void DecodeExec(Uint32 instruction) { Uint32 champ_registre_resultat, val1, val2, resultat; int test1, test2; - Uint32 val; /* valeur qui va etre stockée */ + Uint32 val, of; /* valeur qui va etre stockée */ if (Opcode(instruction) & 0x80) { @@ -323,22 +325,30 @@ void DecodeExec(Uint32 instruction) case 13: if (ValeurBit(Extension(instruction), 0) == 0) { /* RET */ + of = LireRegistreFLAG(); EcrireRegistreSP(AdditionNonSigne(LireRegistreSP(), Champ1(instruction))); EcrireRegistreSP(AdditionNonSigne(LireRegistreSP(), 1)); EcrireRegistrePC(LD(LireRegistreSP())); + EcrireRegistreFLAG(of); } else if (ValeurBit(Extension(instruction), 1) == 0) { /* JMP */ - if (ValeurBit(Extension(instruction), 2) == 0) { + if (ValeurBit(Extension(instruction), 2) != 0) { EcrireRegistrePC(LireRegistre(Champ1(instruction))); } else { EcrireRegistrePC(LireInstruction()); } } else { /* CALL */ - ST(LireRegistreSP(), LireRegistrePC()); - EcrireRegistreSP(SoustractionNonSigne(LireRegistreSP(), 1)); - if (ValeurBit(Extension(instruction), 2) == 0) { + if (ValeurBit(Extension(instruction), 2) != 0) { + ST(LireRegistreSP(), LireRegistrePC()); + of = LireRegistreFLAG(); + EcrireRegistreSP(SoustractionNonSigne(LireRegistreSP(), 1)); + EcrireRegistreFLAG(of); EcrireRegistrePC(LireRegistre(Champ1(instruction))); } else { + ST(LireRegistreSP(), LireRegistrePC() + 1); + of = LireRegistreFLAG(); + EcrireRegistreSP(SoustractionNonSigne(LireRegistreSP(), 1)); + EcrireRegistreFLAG(of); EcrireRegistrePC(LireInstruction()); } } @@ -352,12 +362,15 @@ void DecodeExec(Uint32 instruction) IncrementeCompteurOrdinal(); } ST(LireRegistreSP(), val); + of = LireRegistreFLAG(); EcrireRegistreSP(SoustractionNonSigne(LireRegistreSP(), 1)); + EcrireRegistreFLAG(of); break; case 15: /* POP */ + of = LireRegistreFLAG(); EcrireRegistreSP(AdditionNonSigne(LireRegistreSP(), 1)); EcrireRegistre(Champ1(instruction), LD(LireRegistreSP())); - + EcrireRegistreFLAG(of); break; case 127: /* HALT-RESET */ if (ValeurBit(Extension(instruction), 0) == 0) { |