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authorLinus Torvalds <torvalds@g5.osdl.org>2006-09-27 08:49:07 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-09-27 08:49:07 -0700
commitb98adfccdf5f8dd34ae56a2d5adbe2c030bd4674 (patch)
tree1807a029520f550dd4f90c95ad0063bceb00d645 /arch/sh/math-emu/sfp-util.h
parentba21fe71725f94792330ebc3034ef2b35a36276f (diff)
parent33573c0e3243aaa38b6ad96942de85a1b713c2ff (diff)
Merge master.kernel.org:/pub/scm/linux/kernel/git/lethal/sh-2.6
* master.kernel.org:/pub/scm/linux/kernel/git/lethal/sh-2.6: (108 commits) sh: Fix occasional flush_cache_4096() stack corruption. sh: Calculate shm alignment at runtime. sh: dma-mapping compile fixes. sh: Initial vsyscall page support. sh: Clean up PAGE_SIZE definition for assembly use. sh: Selective flush_cache_mm() flushing. sh: More intelligent entry_mask/way_size calculation. sh: Support for L2 cache on newer SH-4A CPUs. sh: Update kexec support for API changes. sh: Optimized readsl()/writesl() support. sh: Report movli.l/movco.l capabilities. sh: CPU flags in AT_HWCAP in ELF auxvt. sh: Add support for 4K stacks. sh: Enable /proc/kcore support. sh: stack debugging support. sh: select CONFIG_EMBEDDED. sh: machvec rework. sh: Solution Engine SH7343 board support. sh: SH7710VoIPGW board support. sh: Enable verbose BUG() support. ...
Diffstat (limited to 'arch/sh/math-emu/sfp-util.h')
-rw-r--r--arch/sh/math-emu/sfp-util.h72
1 files changed, 72 insertions, 0 deletions
diff --git a/arch/sh/math-emu/sfp-util.h b/arch/sh/math-emu/sfp-util.h
new file mode 100644
index 00000000000..8ae1bd310ad
--- /dev/null
+++ b/arch/sh/math-emu/sfp-util.h
@@ -0,0 +1,72 @@
+/*
+ * These are copied from glibc/stdlib/longlong.h
+ */
+
+#define add_ssaaaa(sh, sl, ah, al, bh, bl) \
+ do { \
+ UWtype __x; \
+ __x = (al) + (bl); \
+ (sh) = (ah) + (bh) + (__x < (al)); \
+ (sl) = __x; \
+ } while (0)
+
+#define sub_ddmmss(sh, sl, ah, al, bh, bl) \
+ do { \
+ UWtype __x; \
+ __x = (al) - (bl); \
+ (sh) = (ah) - (bh) - (__x > (al)); \
+ (sl) = __x; \
+ } while (0)
+
+#define umul_ppmm(w1, w0, u, v) \
+ __asm__ ("dmulu.l %2,%3\n\tsts macl,%1\n\tsts mach,%0" \
+ : "=r" ((u32)(w1)), "=r" ((u32)(w0)) \
+ : "r" ((u32)(u)), "r" ((u32)(v)) \
+ : "macl", "mach")
+
+#define __ll_B ((UWtype) 1 << (W_TYPE_SIZE / 2))
+#define __ll_lowpart(t) ((UWtype) (t) & (__ll_B - 1))
+#define __ll_highpart(t) ((UWtype) (t) >> (W_TYPE_SIZE / 2))
+
+#define udiv_qrnnd(q, r, n1, n0, d) \
+ do { \
+ UWtype __d1, __d0, __q1, __q0; \
+ UWtype __r1, __r0, __m; \
+ __d1 = __ll_highpart (d); \
+ __d0 = __ll_lowpart (d); \
+ \
+ __r1 = (n1) % __d1; \
+ __q1 = (n1) / __d1; \
+ __m = (UWtype) __q1 * __d0; \
+ __r1 = __r1 * __ll_B | __ll_highpart (n0); \
+ if (__r1 < __m) \
+ { \
+ __q1--, __r1 += (d); \
+ if (__r1 >= (d)) /* i.e. we didn't get carry when adding to __r1 */\
+ if (__r1 < __m) \
+ __q1--, __r1 += (d); \
+ } \
+ __r1 -= __m; \
+ \
+ __r0 = __r1 % __d1; \
+ __q0 = __r1 / __d1; \
+ __m = (UWtype) __q0 * __d0; \
+ __r0 = __r0 * __ll_B | __ll_lowpart (n0); \
+ if (__r0 < __m) \
+ { \
+ __q0--, __r0 += (d); \
+ if (__r0 >= (d)) \
+ if (__r0 < __m) \
+ __q0--, __r0 += (d); \
+ } \
+ __r0 -= __m; \
+ \
+ (q) = (UWtype) __q1 * __ll_B | __q0; \
+ (r) = __r0; \
+ } while (0)
+
+#define abort() return 0
+
+#define __BYTE_ORDER __LITTLE_ENDIAN
+
+