C++ (Cpp) GET_ZF示例

示例#1

文件： y64sim.c 项目： zhaoshenglong/ICS2018Fall-2019Spring

/*
 * cond_doit: whether do (mov or jmp) it?  
 * args
 *     PACK_CC: the current condition codes
 *     cond: conditions (C_YES, C_LE, C_L, C_E, C_NE, C_GE, C_G)
 *
 * return
 *     TRUE: do it
 *     FALSE: not do it
 */
bool_t cond_doit(cc_t cc, cond_t cond) 
{
    bool_t doit = FALSE;
    
	switch(cond){
		case C_YES:
			doit = TRUE;
			break;
		case C_LE:
			doit = ((GET_SF(cc) ^ GET_OF(cc)) | GET_ZF(cc));
			break;
		case C_L:
			doit = (GET_SF(cc) ^ GET_OF(cc));
			break;
		case C_E:
			doit = (GET_ZF(cc));
			break;
		case C_NE:
			doit = (!GET_ZF(cc));
			break;
		case C_GE:
			doit = !(GET_SF(cc) ^ GET_OF(cc));
			break;
		case C_G:
			doit = !(GET_SF(cc) ^ GET_OF(cc)) & !GET_ZF(cc);
			break;
	}
			return doit;
}

示例#2

文件： isa.c 项目： kamneo/Archi_projet_L2

/* Branch logic */
bool_t take_branch(cc_t cc, jump_t bcond) {
    bool_t zf = GET_ZF(cc);
    bool_t sf = GET_SF(cc);
    bool_t of = GET_OF(cc);
    bool_t jump = FALSE;
    
    switch(bcond) {
    case J_YES:
	jump = TRUE;
	break;
    case J_LE:
	jump = (sf^of)|zf;
	break;
    case J_L:
	jump = sf^of;
	break;
    case J_E:
	jump = zf;
	break;
    case J_NE:
	jump = zf^1;
	break;
    case J_GE:
	jump = sf^of^1;
	break;
    case J_G:
	jump = (sf^of^1)&(zf^1);
	break;
    default:
	jump = FALSE;
	break;
    }
    return jump;
}

示例#3

文件： isa.c 项目： HurSungYun/ArchLab_2016spr

/* Branch logic */
bool_t cond_holds(cc_t cc, cond_t bcond) {
    bool_t zf = GET_ZF(cc);
    bool_t sf = GET_SF(cc);
    bool_t of = GET_OF(cc);
    bool_t jump = FALSE;
    
    switch(bcond) {
    case C_YES:
	jump = TRUE;
	break;
    case C_LE:
	jump = (sf^of)|zf;
	break;
    case C_L:
	jump = sf^of;
	break;
    case C_E:
	jump = zf;
	break;
    case C_NE:
	jump = zf^1;
	break;
    case C_GE:
	jump = sf^of^1;
	break;
    case C_G:
	jump = (sf^of^1)&(zf^1);
	break;
    default:
	jump = FALSE;
	break;
    }
    return jump;
}

示例#4

文件： cmpxchg.c 项目： chunhualiu/OpenNT

GLOBAL VOID
CMPXCHG32
       	    	               
IFN2(
	IU32 *, pop1,	/* pntr to dst/lsrc operand */
	IU32, op2	/* rsrc operand */
    )


   {
   /*
      First do comparision and generate flags.
    */
   CMP((IU32)GET_EAX(), *pop1, 32);

   /*
      Then swap data as required.
    */
   if ( GET_ZF() )   /* ie iff EAX == op1 */
      {
      *pop1 = op2;
      }
   else
      {
      SET_EAX(*pop1);
      }
   }

示例#5

文件： ssim.c 项目： kywe665/ECEn-324

/* Provide mechanism for simulator to update condition code display */
void show_cc(cc_t cc)
{
    int code;
    sprintf(tcl_msg, "setCC %d %d %d",
	    GET_ZF(cc), GET_SF(cc), GET_OF(cc));
    code = Tcl_Eval(sim_interp, tcl_msg);
    if (code != TCL_OK) {
	fprintf(stderr, "Failed to display condition codes\n");
	fprintf(stderr, "Error Message was '%s'\n", sim_interp->result);
    }
}

示例#6

文件： loopxx.c 项目： chunhualiu/OpenNT

GLOBAL VOID
LOOPNE16
                 
IFN1(
	IU32, rel_offset
    )


   {
   SET_CX(GET_CX() - 1);
   if ( GET_CX() != 0 && !GET_ZF() )
      update_relative_ip(rel_offset);
   }

示例#7

文件： loopxx.c 项目： chunhualiu/OpenNT

GLOBAL VOID
LOOPE32
                 
IFN1(
	IU32, rel_offset
    )


   {
   SET_ECX(GET_ECX() - 1);
   if ( GET_ECX() != 0 && GET_ZF() )
      update_relative_ip(rel_offset);
   }

示例#8

文件： y86sim.c 项目： tjgykhulj/ICS_Lab

/*
 * cond_doit: whether do (mov or jmp) it?  
 * args
 *     PACK_CC: the current condition codes
 *     cond: conditions (C_YES, C_LE, C_L, C_E, C_NE, C_GE, C_G)
 *
 * return
 *     TRUE: do it
 *     FALSE: not do it
 */
bool_t cond_doit(cc_t cc, cond_t cond) 
{
    bool_t doit;
    bool_t ZF = GET_ZF(cc),
	   SF = GET_SF(cc),
	   OF = GET_OF(cc);
    switch (cond) {
	case C_YES: return TRUE;
	case C_LE: return (SF^OF)|ZF;
	case C_L: return SF^OF;
	case C_E: return ZF;
	case C_NE: return !ZF;
	case C_GE: return !(SF^OF);
	case C_G: return !(SF^OF)&!ZF;
	default: return FALSE;
	}
}

示例#9

文件： y86sim.c 项目： Azard/icslabs

/*
 * cond_doit: whether do (mov or jmp) it?  
 * args
 *     PACK_CC: the current condition codes
 *     cond: conditions (C_YES, C_LE, C_L, C_E, C_NE, C_GE, C_G)
 *
 * return
 *     TRUE: do it
 *     FALSE: not do it
 */
bool_t cond_doit(cc_t cc, cond_t cond) 
{
    bool_t doit = FALSE;
	bool_t zero = GET_ZF(cc);
	bool_t sign = GET_SF(cc);
	bool_t ovf  = GET_OF(cc);
		
	switch (cond)
	{
		case C_YES:
			doit = TRUE;
			break;
		case C_LE:
			if (((sign^ovf)|zero)&0x1)
				doit = TRUE;
			break;
		case C_L:
			if ((sign^ovf)&0x1)
				doit = TRUE;
			break;
		case C_E:
			if ((zero)&0x1)
				doit = TRUE;
			break; 
		case C_NE:
			if ((!zero)&0x1)
				doit = TRUE;
			break;
		case C_GE:
			if ((~(sign^ovf))&0x1)
				doit = TRUE;
			break;
		case C_G:
			if (((~(sign^ovf))&(~zero))&0x1)
				doit = TRUE;
			break;
		default:
			break;
	}
    return doit;
}