if (nh >= m)
return ~0ULL;
mh = m >> 32;
- z = (mh << 32 <= nh) ? 0xffffffff00000000ULL : (nh / mh) << 32;
+ if (mh << 32 <= nh) {
+ z = 0xffffffff00000000ULL;
+ } else {
+ z = nh;
+ do_div(z, mh);
+ z <<= 32;
+ }
mul64to128(&termh, &terml, m, z);
sub128(&remh, &reml, nh, nl, termh, terml);
ml = m << 32;
add128(&remh, &reml, remh, reml, mh, ml);
}
remh = (remh << 32) | (reml >> 32);
- z |= (mh << 32 <= remh) ? 0xffffffff : remh / mh;
+ if (mh << 32 <= remh) {
+ z |= 0xffffffff;
+ } else {
+ do_div(remh, mh);
+ z |= remh;
+ }
return z;
}
};
extern s32 vfp_get_float(unsigned int reg);
-extern void vfp_put_float(unsigned int reg, s32 val);
+extern void vfp_put_float(s32 val, unsigned int reg);
/*
* VFP_SINGLE_MANTISSA_BITS - number of bits in the mantissa
u64 significand;
};
+/*
+ * VFP_REG_ZERO is a special register number for vfp_get_double
+ * which returns (double)0.0. This is useful for the compare with
+ * zero instructions.
+ */
+#define VFP_REG_ZERO 16
extern u64 vfp_get_double(unsigned int reg);
-extern void vfp_put_double(unsigned int reg, u64 val);
+extern void vfp_put_double(u64 val, unsigned int reg);
#define VFP_DOUBLE_MANTISSA_BITS (52)
#define VFP_DOUBLE_EXPONENT_BITS (11)
u32 vfp_double_normaliseround(int dd, struct vfp_double *vd, u32 fpscr, u32 exceptions, const char *func);
+u32 vfp_estimate_sqrt_significand(u32 exponent, u32 significand);
+
/*
- * System registers
+ * A special flag to tell the normalisation code not to normalise.
*/
-extern u32 vfp_get_sys(unsigned int reg);
-extern void vfp_put_sys(unsigned int reg, u32 val);
+#define VFP_NAN_FLAG 0x100
-u32 vfp_estimate_sqrt_significand(u32 exponent, u32 significand);
+/*
+ * A bit pattern used to indicate the initial (unset) value of the
+ * exception mask, in case nothing handles an instruction. This
+ * doesn't include the NAN flag, which get masked out before
+ * we check for an error.
+ */
+#define VFP_EXCEPTION_ERROR ((u32)-1 & ~VFP_NAN_FLAG)
+
+/*
+ * A flag to tell vfp instruction type.
+ * OP_SCALAR - this operation always operates in scalar mode
+ * OP_SD - the instruction exceptionally writes to a single precision result.
+ * OP_DD - the instruction exceptionally writes to a double precision result.
+ */
+#define OP_SCALAR (1 << 0)
+#define OP_SD (1 << 1)
+#define OP_DD (1 << 1)
+
+struct op {
+ u32 (* const fn)(int dd, int dn, int dm, u32 fpscr);
+ u32 flags;
+};
+
+#ifdef CONFIG_SMP
+extern void vfp_save_state(void *location, u32 fpexc);
+#endif