C++ (Cpp) __FPU_TRAP_P Exemples

Exemple #1

Fichier : stfs.c Projet : dmgerman/linux-pre-history

int
stfs(void *frS, void *ea)
{
	FP_DECL_D(A);
	FP_DECL_S(R);
	float f;
	int err;

#ifdef DEBUG
	printk("%s: S %p, ea %p\n", __FUNCTION__, frS, ea);
#endif

	__FP_UNPACK_D(A, frS);

#ifdef DEBUG
	printk("A: %ld %lu %lu %ld (%ld)\n", A_s, A_f1, A_f0, A_e, A_c);
#endif

	FP_CONV(S, D, 1, 2, R, A);

#ifdef DEBUG
	printk("R: %ld %lu %ld (%ld)\n", R_s, R_f, R_e, R_c);
#endif

	err = _FP_PACK_CANONICAL(S, 1, R);
	if (!err || !__FPU_TRAP_P(err)) {
		__FP_PACK_RAW_1(S, &f, R);
		if (copy_to_user(ea, &f, sizeof(float)))
			return -EFAULT;
	}

	return err;
}

Exemple #2

Fichier : stfs.c Projet : 01org/thunderbolt-software-kernel-tree

int
stfs(void *frS, void *ea)
{
	FP_DECL_D(A);
	FP_DECL_S(R);
	FP_DECL_EX;
	float f;

#ifdef DEBUG
	printk("%s: S %p, ea %p\n", __func__, frS, ea);
#endif

	FP_UNPACK_DP(A, frS);

#ifdef DEBUG
	printk("A: %ld %lu %lu %ld (%ld)\n", A_s, A_f1, A_f0, A_e, A_c);
#endif

	FP_CONV(S, D, 1, 2, R, A);

#ifdef DEBUG
	printk("R: %ld %lu %ld (%ld)\n", R_s, R_f, R_e, R_c);
#endif

	_FP_PACK_CANONICAL(S, 1, R);
	if (!FP_CUR_EXCEPTIONS || !__FPU_TRAP_P(FP_CUR_EXCEPTIONS)) {
		_FP_PACK_RAW_1_P(S, &f, R);
		if (copy_to_user(ea, &f, sizeof(float)))
			return -EFAULT;
	}

	return FP_CUR_EXCEPTIONS;
}

Exemple #3

Fichier : fdivs.c Projet : Medvedroid/OT_903D-kernel-2.6.35.7

int
fdivs(void *frD, void *frA, void *frB)
{
	FP_DECL_D(A);
	FP_DECL_D(B);
	FP_DECL_D(R);
	FP_DECL_EX;

#ifdef DEBUG
	printk("%s: %p %p %p\n", __func__, frD, frA, frB);
#endif

	FP_UNPACK_DP(A, frA);
	FP_UNPACK_DP(B, frB);

#ifdef DEBUG
	printk("A: %ld %lu %lu %ld (%ld)\n", A_s, A_f1, A_f0, A_e, A_c);
	printk("B: %ld %lu %lu %ld (%ld)\n", B_s, B_f1, B_f0, B_e, B_c);
#endif

	if (A_c == FP_CLS_ZERO && B_c == FP_CLS_ZERO) {
		FP_SET_EXCEPTION(EFLAG_VXZDZ);
#ifdef DEBUG
		printk("%s: FPSCR_VXZDZ raised\n", __func__);
#endif
	}
	if (A_c == FP_CLS_INF && B_c == FP_CLS_INF) {
		FP_SET_EXCEPTION(EFLAG_VXIDI);
#ifdef DEBUG
		printk("%s: FPSCR_VXIDI raised\n", __func__);
#endif
	}

	if (B_c == FP_CLS_ZERO && A_c != FP_CLS_ZERO) {
		FP_SET_EXCEPTION(EFLAG_DIVZERO);
		if (__FPU_TRAP_P(EFLAG_DIVZERO))
			return FP_CUR_EXCEPTIONS;
	}

	FP_DIV_D(R, A, B);

#ifdef DEBUG
	printk("D: %ld %lu %lu %ld (%ld)\n", R_s, R_f1, R_f0, R_e, R_c);
#endif

	__FP_PACK_DS(frD, R);

	return FP_CUR_EXCEPTIONS;
}

Exemple #4

Fichier : fdiv.c Projet : 274914765/C

int
fdiv(void *frD, void *frA, void *frB)
{
    FP_DECL_D(A);
    FP_DECL_D(B);
    FP_DECL_D(R);
    int ret = 0;

#ifdef DEBUG
    printk("%s: %p %p %p\n", __func__, frD, frA, frB);
#endif

    __FP_UNPACK_D(A, frA);
    __FP_UNPACK_D(B, frB);

#ifdef DEBUG
    printk("A: %ld %lu %lu %ld (%ld)\n", A_s, A_f1, A_f0, A_e, A_c);
    printk("B: %ld %lu %lu %ld (%ld)\n", B_s, B_f1, B_f0, B_e, B_c);
#endif

    if (A_c == FP_CLS_ZERO && B_c == FP_CLS_ZERO) {
        ret |= EFLAG_VXZDZ;
#ifdef DEBUG
        printk("%s: FPSCR_VXZDZ raised\n", __func__);
#endif
    }
    if (A_c == FP_CLS_INF && B_c == FP_CLS_INF) {
        ret |= EFLAG_VXIDI;
#ifdef DEBUG
        printk("%s: FPSCR_VXIDI raised\n", __func__);
#endif
    }

    if (B_c == FP_CLS_ZERO && A_c != FP_CLS_ZERO) {
        ret |= EFLAG_DIVZERO;
        if (__FPU_TRAP_P(EFLAG_DIVZERO))
            return ret;
    }
    FP_DIV_D(R, A, B);

#ifdef DEBUG
    printk("D: %ld %lu %lu %ld (%ld)\n", R_s, R_f1, R_f0, R_e, R_c);
#endif

    return (ret | __FP_PACK_D(frD, R));
}