diff options
| author | Liu Yu <Yu.Liu@freescale.com> | 2008-01-17 22:21:39 -0500 |
|---|---|---|
| committer | Kumar Gala <galak@kernel.crashing.org> | 2008-01-23 20:34:21 -0500 |
| commit | e3bc3a09bdfc1b3b88b32d7960c4c3b84a2b860f (patch) | |
| tree | 9072a7d785bb1aa3ef0714f0a9fc27ccd5ce1bca /arch/powerpc/math-emu | |
| parent | e5091842dc067c0c9ae0d8a26f9e2eecf7df34f3 (diff) | |
[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 <Yu.Liu@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/math-emu')
| -rw-r--r-- | 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 fcdd6d064c54..c9ae626070da 100644 --- a/arch/powerpc/math-emu/op-4.h +++ b/arch/powerpc/math-emu/op-4.h | |||
| @@ -194,19 +194,39 @@ | |||
| 194 | (X##_f[3] = I3, X##_f[2] = I2, X##_f[1] = I1, X##_f[0] = I0) | 194 | (X##_f[3] = I3, X##_f[2] = I2, X##_f[1] = I1, X##_f[0] = I0) |
| 195 | 195 | ||
| 196 | #ifndef __FP_FRAC_ADD_4 | 196 | #ifndef __FP_FRAC_ADD_4 |
| 197 | #define __FP_FRAC_ADD_4(r3,r2,r1,r0,x3,x2,x1,x0,y3,y2,y1,y0) \ | 197 | #define __FP_FRAC_ADD_4(r3,r2,r1,r0,x3,x2,x1,x0,y3,y2,y1,y0) \ |
| 198 | (r0 = x0 + y0, \ | 198 | do { \ |
| 199 | r1 = x1 + y1 + (r0 < x0), \ | 199 | int _c1, _c2, _c3; \ |
| 200 | r2 = x2 + y2 + (r1 < x1), \ | 200 | r0 = x0 + y0; \ |
| 201 | r3 = x3 + y3 + (r2 < x2)) | 201 | _c1 = r0 < x0; \ |
| 202 | r1 = x1 + y1; \ | ||
| 203 | _c2 = r1 < x1; \ | ||
| 204 | r1 += _c1; \ | ||
| 205 | _c2 |= r1 < _c1; \ | ||
| 206 | r2 = x2 + y2; \ | ||
| 207 | _c3 = r2 < x2; \ | ||
| 208 | r2 += _c2; \ | ||
| 209 | _c3 |= r2 < _c2; \ | ||
| 210 | r3 = x3 + y3 + _c3; \ | ||
| 211 | } while (0) | ||
| 202 | #endif | 212 | #endif |
| 203 | 213 | ||
| 204 | #ifndef __FP_FRAC_SUB_4 | 214 | #ifndef __FP_FRAC_SUB_4 |
| 205 | #define __FP_FRAC_SUB_4(r3,r2,r1,r0,x3,x2,x1,x0,y3,y2,y1,y0) \ | 215 | #define __FP_FRAC_SUB_4(r3,r2,r1,r0,x3,x2,x1,x0,y3,y2,y1,y0) \ |
| 206 | (r0 = x0 - y0, \ | 216 | do { \ |
| 207 | r1 = x1 - y1 - (r0 > x0), \ | 217 | int _c1, _c2, _c3; \ |
| 208 | r2 = x2 - y2 - (r1 > x1), \ | 218 | r0 = x0 - y0; \ |
| 209 | r3 = x3 - y3 - (r2 > x2)) | 219 | _c1 = r0 > x0; \ |
| 220 | r1 = x1 - y1; \ | ||
| 221 | _c2 = r1 > x1; \ | ||
| 222 | r1 -= _c1; \ | ||
| 223 | _c2 |= r1 > _c1; \ | ||
| 224 | r2 = x2 - y2; \ | ||
| 225 | _c3 = r2 > x2; \ | ||
| 226 | r2 -= _c2; \ | ||
| 227 | _c3 |= r2 > _c2; \ | ||
| 228 | r3 = x3 - y3 - _c3; \ | ||
| 229 | } while (0) | ||
| 210 | #endif | 230 | #endif |
| 211 | 231 | ||
| 212 | #ifndef __FP_FRAC_ADDI_4 | 232 | #ifndef __FP_FRAC_ADDI_4 |