From 9d6740c3b6c83b3493ce2254ddb48a0995bd28b4 Mon Sep 17 00:00:00 2001 From: biouman <> Date: Sat, 19 May 2001 23:54:39 +0000 Subject: *** empty log message *** --- include/interne.h | 17 +++++- lib/interne.c | 164 +++++++++++++++++++++++++++++++++++++++--------------- 2 files changed, 136 insertions(+), 45 deletions(-) diff --git a/include/interne.h b/include/interne.h index 801365b..337ec2d 100644 --- a/include/interne.h +++ b/include/interne.h @@ -14,4 +14,19 @@ Uint32 Extension(Uint32 ins); Uint32 Champ1(Uint32 ins); Uint32 Champ2(Uint32 ins); Uint32 Champ3(Uint32 ins); -#endif +Uint32 ZERO(void); +Uint32 ONE(void); +void AffecteBit(Uint32 * a, char v, int position); +int Neg(Uint32 a); +char Not(char a); +char And(char a, char b); +char Or(char a, char b); +char Xor(char a, char b); +char Nand(char a, char b); +char Nor(char a, char b); +void SetOverflow(int * o); +void ResetOverflow(int * o); +int Overflow(int o); +char OrWord(Uint32 a); +char AndWord(Uint32 a); +#endif \ No newline at end of file diff --git a/lib/interne.c b/lib/interne.c index 9e59944..642ce16 100644 --- a/lib/interne.c +++ b/lib/interne.c @@ -1,4 +1,5 @@ #include +#include #include "interne.h" #include "simulator.h" #include "exceptions.h" @@ -18,50 +19,6 @@ void Set(Uint32 * i) *i &= 1; } /* Ok */ -/* Met le bit 'position' à zéro */ -void ResetBit(Uint32 * i, int position) -{ - if (position < 0 || position > 31) { - exception(1, _("ResetBit: Incorrect Value")); - } else { - Uint32 aux = VAL_MAX - (1 << position); - - *i &= aux; - } -} /* Ok */ - -/* Met le bit 'position' à un */ -void SetBit(Uint32 * i, int position) -{ - if (position < 0 || position > 31) { - exception(1, _("SetBit: Incorrect Value")); - } else { - Uint32 aux = 1 << position; - - *i |= aux; - } -} /* Ok */ - -/* Donne la valeur du bit 'position' */ -int ValeurBit(Uint32 nombre, int position) -{ - if (position < 0 || position > 31) { - exception(1, _("ValeurBit: Incorrect Value")); - return (-1); - } - return ((nombre >> position) & 1); -} /* Ok */ - -/* Affiche tous les bits d'un mot */ -void Uint32toBin(Uint32 i) -{ - int k; - - for (k = 31; k >= 0; k--) - printf("%d", ValeurBit(i, k)); - printf("\n"); -} /* Ok */ - /* Extrait un champ dans un mot */ Uint32 champ(Uint32 nombre, int taille) { @@ -92,3 +49,122 @@ Uint32 Champ3(Uint32 ins) { return (champ(ins >> 26, 64)); } /* Ok */ +Uint32 ZERO(void) { return (0); } +Uint32 ONE(void) { return (1); } + +/* Met le bit 'position' à zéro */ +void ResetBit(Uint32 * i, int position) { + if (position < 0 || position > 31) + exception(1, _("ResetBit: Incorrect Value")); + else { + int k; + Uint32 VAL_MAX = ZERO(); + for (k = 0; k < 32; k++) + SetBit(&VAL_MAX, k); + * i &= VAL_MAX - (ONE() << position); + } +} + +/* Met le bit 'position' à un */ +void SetBit(Uint32 * i, int position) { + if (position < 0 || position > 31) + exception(1, _("SetBit: Incorrect Value")); + else { + Uint32 aux = ONE() << position; + * i |= aux; + } +} + +/* Met le bit 'position' à la meme valeur que 'v' */ +void AffecteBit(Uint32 * a, char v, int position) { (v == 0) ? ResetBit(&(* a), position) : SetBit(&(* a), position); } + +/* Donne la valeur du bit 'position' */ +int ValeurBit(Uint32 nombre, int position) { + if (position < 0 || position > 31) { + exception(1, _("ValeurBit: Incorrect Value")); + return (-1); + } + return ((nombre >> position) & ONE()); +} + +int Neg(Uint32 a) { + return (ValeurBit(a, 31)); +} + +/* Met le flag d'overflow à zéro */ +void SetOverflow(int * o) { * o = ONE(); } + +/* Met le flag d'overflow à un */ +void ResetOverflow(int * o) { * o = ZERO(); } + +/* Donne la valeur du flag d'overflow */ +int Overflow(int o) { return (o); } + +/* Affiche tous les bits d'un mot */ +void Uint32toBin(Uint32 i) { + int k; + for (k = 31; k >= 0; k--) + printf("%d", ValeurBit(i, k)); + printf("\n"); +} + +/* Effectue le Not d'un bit */ +char Not(char a) { return ((char) ((a == 0) ? 1 : 0)); } + +/* Effectue le And de deux bits */ +char And(char a, char b) { + if (a == 0 && b == 0) return (0); + if (a == 0 && b == 1) return (0); + if (a == 1 && b == 0) return (0); + return (1); +} + +/* Effectue le Or de deux bits */ +char Or(char a, char b) { + if (a == 0 && b == 0) return (0); + if (a == 0 && b == 1) return (1); + if (a == 1 && b == 0) return (1); + return (1); +} + +/* Effectue le Xor de deux bits */ +char Xor(char a, char b) { + if (a == 0 && b == 0) return (0); + if (a == 0 && b == 1) return (1); + if (a == 1 && b == 0) return (1); + return (0); +} + +/* Effectue le Nand de deux bits */ +char Nand(char a, char b) { + if (a == 0 && b == 0) return (1); + if (a == 0 && b == 1) return (1); + if (a == 1 && b == 0) return (1); + return (0); +} + +/* Effectue le Nor de deux bits */ +char Nor(char a, char b) { + if (a == 0 && b == 0) return (1); + if (a == 0 && b == 1) return (0); + if (a == 1 && b == 0) return (0); + return (0); +} + +char OrWord(Uint32 a) { + int i; + char resultat = (char) ValeurBit(a, 0); + for (i = 1; i < 32; i++) + resultat = Or((char) ValeurBit(a, i), resultat); + return (resultat); +} + +char AndWord(Uint32 a) { + int i; + char resultat = (char) ValeurBit(a, 0); + for (i = 1; i < 32; i++) + resultat = And((char) ValeurBit(a, i), resultat); + return (resultat); +} + + -- cgit v1.2.3