diff options
author | Dave Jones <davej@redhat.com> | 2006-04-18 17:19:55 -0500 |
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committer | Dave Jones <davej@redhat.com> | 2006-04-18 17:19:55 -0500 |
commit | f1f76afd71e0f17af9a35fcb649f4bab53304a4d (patch) | |
tree | a56257b13a0eda4a9b7e950c3b85adad16341b80 /arch/powerpc/math-emu/fdiv.c | |
parent | 530515a06f90c0831732709efee4a99497bd2b7c (diff) | |
parent | 385910f2b275a636238f70844f1b6da9fda6f2da (diff) |
Merge ../linus
Diffstat (limited to 'arch/powerpc/math-emu/fdiv.c')
-rw-r--r-- | arch/powerpc/math-emu/fdiv.c | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/arch/powerpc/math-emu/fdiv.c b/arch/powerpc/math-emu/fdiv.c new file mode 100644 index 00000000000..f2fba825b2d --- /dev/null +++ b/arch/powerpc/math-emu/fdiv.c @@ -0,0 +1,53 @@ +#include <linux/types.h> +#include <linux/errno.h> +#include <asm/uaccess.h> + +#include "soft-fp.h" +#include "double.h" + +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", __FUNCTION__, 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", __FUNCTION__); +#endif + } + if (A_c == FP_CLS_INF && B_c == FP_CLS_INF) { + ret |= EFLAG_VXIDI; +#ifdef DEBUG + printk("%s: FPSCR_VXIDI raised\n", __FUNCTION__); +#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)); +} |