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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/ppc/math-emu/fdivs.c
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'arch/ppc/math-emu/fdivs.c')
-rw-r--r--arch/ppc/math-emu/fdivs.c55
1 files changed, 55 insertions, 0 deletions
diff --git a/arch/ppc/math-emu/fdivs.c b/arch/ppc/math-emu/fdivs.c
new file mode 100644
index 00000000000..b971196e317
--- /dev/null
+++ b/arch/ppc/math-emu/fdivs.c
@@ -0,0 +1,55 @@
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <asm/uaccess.h>
+
+#include "soft-fp.h"
+#include "double.h"
+#include "single.h"
+
+int
+fdivs(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_DS(frD, R));
+}