Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=e3bc3a09bdfc1b3b88b32d7960c4c3b84a2b860f
Commit: e3bc3a09bdfc1b3b88b32d7960c4c3b84a2b860f
Parent: e5091842dc067c0c9ae0d8a26f9e2eecf7df34f3
Author: Liu Yu <[EMAIL PROTECTED]>
AuthorDate: Fri Jan 18 11:21:39 2008 +0800
Committer: Kumar Gala <[EMAIL PROTECTED]>
CommitDate: Wed Jan 23 19:34:21 2008 -0600
[POWERPC] Fix carry bug in 128-bit unsigned integer adding
Synchronize it to the definition in include/math-emu/op-4.h for short term.
Signed-off-by: Liu Yu <[EMAIL PROTECTED]>
Signed-off-by: Kumar Gala <[EMAIL PROTECTED]>
---
arch/powerpc/math-emu/op-4.h | 40 ++++++++++++++++++++++++++++++----------
1 files changed, 30 insertions(+), 10 deletions(-)
diff --git a/arch/powerpc/math-emu/op-4.h b/arch/powerpc/math-emu/op-4.h
index fcdd6d0..c9ae626 100644
--- a/arch/powerpc/math-emu/op-4.h
+++ b/arch/powerpc/math-emu/op-4.h
@@ -194,19 +194,39 @@
(X##_f[3] = I3, X##_f[2] = I2, X##_f[1] = I1, X##_f[0] = I0)
#ifndef __FP_FRAC_ADD_4
-#define __FP_FRAC_ADD_4(r3,r2,r1,r0,x3,x2,x1,x0,y3,y2,y1,y0) \
- (r0 = x0 + y0, \
- r1 = x1 + y1 + (r0 < x0), \
- r2 = x2 + y2 + (r1 < x1), \
- r3 = x3 + y3 + (r2 < x2))
+#define __FP_FRAC_ADD_4(r3,r2,r1,r0,x3,x2,x1,x0,y3,y2,y1,y0) \
+ do { \
+ int _c1, _c2, _c3; \
+ r0 = x0 + y0; \
+ _c1 = r0 < x0; \
+ r1 = x1 + y1; \
+ _c2 = r1 < x1; \
+ r1 += _c1; \
+ _c2 |= r1 < _c1; \
+ r2 = x2 + y2; \
+ _c3 = r2 < x2; \
+ r2 += _c2; \
+ _c3 |= r2 < _c2; \
+ r3 = x3 + y3 + _c3; \
+ } while (0)
#endif
#ifndef __FP_FRAC_SUB_4
-#define __FP_FRAC_SUB_4(r3,r2,r1,r0,x3,x2,x1,x0,y3,y2,y1,y0) \
- (r0 = x0 - y0, \
- r1 = x1 - y1 - (r0 > x0), \
- r2 = x2 - y2 - (r1 > x1), \
- r3 = x3 - y3 - (r2 > x2))
+#define __FP_FRAC_SUB_4(r3,r2,r1,r0,x3,x2,x1,x0,y3,y2,y1,y0) \
+ do { \
+ int _c1, _c2, _c3; \
+ r0 = x0 - y0; \
+ _c1 = r0 > x0; \
+ r1 = x1 - y1; \
+ _c2 = r1 > x1; \
+ r1 -= _c1; \
+ _c2 |= r1 > _c1; \
+ r2 = x2 - y2; \
+ _c3 = r2 > x2; \
+ r2 -= _c2; \
+ _c3 |= r2 > _c2; \
+ r3 = x3 - y3 - _c3; \
+ } while (0)
#endif
#ifndef __FP_FRAC_ADDI_4
-
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