| ev6-divide.S (e5451c8f8330e03ad3cfa16048b4daf961af434f) | ev6-divide.S (00fc0e0dda6286407f3854cd71a125f519a5689c) |
|---|---|
| 1/* 2 * arch/alpha/lib/ev6-divide.S 3 * 4 * 21264 version contributed by Rick Gorton <rick.gorton@alpha-processor.com> 5 * 6 * Alpha division.. 7 */ 8 --- 41 unchanged lines hidden (view full) --- 50 * ftp.digital.com/pub/Digital/info/semiconductor/literature/dsc-library.html 51 * Scheduling notation: 52 * E - either cluster 53 * U - upper subcluster; U0 - subcluster U0; U1 - subcluster U1 54 * L - lower subcluster; L0 - subcluster L0; L1 - subcluster L1 55 * Try not to change the actual algorithm if possible for consistency. 56 */ 57 | 1/* 2 * arch/alpha/lib/ev6-divide.S 3 * 4 * 21264 version contributed by Rick Gorton <rick.gorton@alpha-processor.com> 5 * 6 * Alpha division.. 7 */ 8 --- 41 unchanged lines hidden (view full) --- 50 * ftp.digital.com/pub/Digital/info/semiconductor/literature/dsc-library.html 51 * Scheduling notation: 52 * E - either cluster 53 * U - upper subcluster; U0 - subcluster U0; U1 - subcluster U1 54 * L - lower subcluster; L0 - subcluster L0; L1 - subcluster L1 55 * Try not to change the actual algorithm if possible for consistency. 56 */ 57 |
| 58#include <asm/export.h> |
|
| 58#define halt .long 0 59 60/* 61 * Select function type and registers 62 */ 63#define mask $0 64#define divisor $1 65#define compare $28 --- 134 unchanged lines hidden (view full) --- 200#ifdef DIV 201 DIV_ONLY(ldq tmp2,32($30)) # L : 202#else 203 nop # E : 204#endif 205 addq $30,STACK,$30 # E : 206 ret $31,($23),1 # L0 : L U U L 207 .end ufunction | 59#define halt .long 0 60 61/* 62 * Select function type and registers 63 */ 64#define mask $0 65#define divisor $1 66#define compare $28 --- 134 unchanged lines hidden (view full) --- 201#ifdef DIV 202 DIV_ONLY(ldq tmp2,32($30)) # L : 203#else 204 nop # E : 205#endif 206 addq $30,STACK,$30 # E : 207 ret $31,($23),1 # L0 : L U U L 208 .end ufunction |
| 209EXPORT_SYMBOL(ufunction) |
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| 208 209/* 210 * Uhh.. Ugly signed division. I'd rather not have it at all, but 211 * it's needed in some circumstances. There are different ways to 212 * handle this, really. This does: 213 * -a / b = a / -b = -(a / b) 214 * -a % b = -(a % b) 215 * a % -b = a % b --- 36 unchanged lines hidden (view full) --- 252 cmovlt $28,tmp1,$27 # E : Latency 2, extra map slot 253 nop # E : U L L U : as part of the cmov 254 255 ldq tmp1,24($30) # L : 256 nop # E : as part of the cmov 257 addq $30,STACK,$30 # E : 258 ret $31,($23),1 # L0 : L U U L 259 .end sfunction | 210 211/* 212 * Uhh.. Ugly signed division. I'd rather not have it at all, but 213 * it's needed in some circumstances. There are different ways to 214 * handle this, really. This does: 215 * -a / b = a / -b = -(a / b) 216 * -a % b = -(a % b) 217 * a % -b = a % b --- 36 unchanged lines hidden (view full) --- 254 cmovlt $28,tmp1,$27 # E : Latency 2, extra map slot 255 nop # E : U L L U : as part of the cmov 256 257 ldq tmp1,24($30) # L : 258 nop # E : as part of the cmov 259 addq $30,STACK,$30 # E : 260 ret $31,($23),1 # L0 : L U U L 261 .end sfunction |
| 262EXPORT_SYMBOL(sfunction) |
|