Subversion Repositories or1k_soc_on_altera_embedded_dev_kit

#include <linux/types.h>

#include <linux/errno.h>

#include <asm/uaccess.h>

#include "soft-fp.h"

#include "double.h"

int

fcmpo(u32 *ccr, int crfD, void *frA, void *frB)

{

        FP_DECL_D(A);

        FP_DECL_D(B);

        int code[4] = { (1 << 3), (1 << 1), (1 << 2), (1 << 0) };

        long cmp;

        int ret = 0;

#ifdef DEBUG

        printk("%s: %p (%08x) %d %p %p\n", __FUNCTION__, ccr, *ccr, crfD, 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_NAN || B_c == FP_CLS_NAN)

                ret |= EFLAG_VXVC;

        FP_CMP_D(cmp, A, B, 2);

        cmp = code[(cmp + 1) & 3];

        __FPU_FPSCR &= ~(0x1f000);

        __FPU_FPSCR |= (cmp << 12);

        *ccr &= ~(15 << ((7 - crfD) << 2));

        *ccr |= (cmp << ((7 - crfD) << 2));

#ifdef DEBUG

        printk("CR: %08x\n", *ccr);

#endif

        return ret;

}