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TOMOYO Linux Cross Reference
Linux/arch/mips/kernel/octeon_switch.S

Version: ~ [ linux-6.12-rc7 ] ~ [ linux-6.11.7 ] ~ [ linux-6.10.14 ] ~ [ linux-6.9.12 ] ~ [ linux-6.8.12 ] ~ [ linux-6.7.12 ] ~ [ linux-6.6.60 ] ~ [ linux-6.5.13 ] ~ [ linux-6.4.16 ] ~ [ linux-6.3.13 ] ~ [ linux-6.2.16 ] ~ [ linux-6.1.116 ] ~ [ linux-6.0.19 ] ~ [ linux-5.19.17 ] ~ [ linux-5.18.19 ] ~ [ linux-5.17.15 ] ~ [ linux-5.16.20 ] ~ [ linux-5.15.171 ] ~ [ linux-5.14.21 ] ~ [ linux-5.13.19 ] ~ [ linux-5.12.19 ] ~ [ linux-5.11.22 ] ~ [ linux-5.10.229 ] ~ [ linux-5.9.16 ] ~ [ linux-5.8.18 ] ~ [ linux-5.7.19 ] ~ [ linux-5.6.19 ] ~ [ linux-5.5.19 ] ~ [ linux-5.4.285 ] ~ [ linux-5.3.18 ] ~ [ linux-5.2.21 ] ~ [ linux-5.1.21 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.323 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.336 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.337 ] ~ [ linux-4.4.302 ] ~ [ linux-3.10.108 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.12 ] ~ [ policy-sample ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

Diff markup

Differences between /arch/mips/kernel/octeon_switch.S (Version linux-6.12-rc7) and /arch/i386/kernel/octeon_switch.S (Version linux-5.5.19)


  1 /*                                                
  2  * This file is subject to the terms and condi    
  3  * License.  See the file "COPYING" in the mai    
  4  * for more details.                              
  5  *                                                
  6  * Copyright (C) 1994, 1995, 1996, 1998, 1999,    
  7  * Copyright (C) 1996 David S. Miller (davem@d    
  8  * Copyright (C) 1994, 1995, 1996, by Andreas     
  9  * Copyright (C) 1999 Silicon Graphics, Inc.      
 10  * Copyright (C) 2000 MIPS Technologies, Inc.     
 11  *    written by Carsten Langgaard, carstenl@m    
 12  */                                               
 13 #include <asm/asm.h>                              
 14 #include <asm/asm-offsets.h>                      
 15 #include <asm/mipsregs.h>                         
 16 #include <asm/regdef.h>                           
 17 #include <asm/stackframe.h>                       
 18                                                   
 19 /*                                                
 20  * task_struct *resume(task_struct *prev, task    
 21  *                     struct thread_info *nex    
 22  */                                               
 23         .align  7                                 
 24         LEAF(resume)                              
 25         .set arch=octeon                          
 26         mfc0    t1, CP0_STATUS                    
 27         LONG_S  t1, THREAD_STATUS(a0)             
 28         cpu_save_nonscratch a0                    
 29         LONG_S  ra, THREAD_REG31(a0)              
 30                                                   
 31 #if CONFIG_CAVIUM_OCTEON_CVMSEG_SIZE > 0          
 32         /* Check if we need to store CVMSEG st    
 33         dmfc0   t0, $11,7       /* CvmMemCtl *    
 34         bbit0   t0, 6, 3f       /* Is user acc    
 35                                                   
 36         /* Store the CVMSEG state */              
 37         /* Extract the size of CVMSEG */          
 38         andi    t0, 0x3f                          
 39         /* Multiply * (cache line size/sizeof(    
 40         sll     t0, 7-LONGLOG-1                   
 41         li      t1, -32768      /* Base addres    
 42         LONG_ADDI t2, a0, THREAD_CVMSEG /* Whe    
 43         synciobdma                                
 44 2:                                                
 45         .set noreorder                            
 46         LONG_L  t8, 0(t1)       /* Load from C    
 47         subu    t0, 1           /* Decrement l    
 48         LONG_L  t9, LONGSIZE(t1)/* Load from C    
 49         LONG_ADDU t1, LONGSIZE*2 /* Increment     
 50         LONG_S  t8, 0(t2)       /* Store CVMSE    
 51         LONG_ADDU t2, LONGSIZE*2 /* Increment     
 52         bnez    t0, 2b          /* Loop until     
 53          LONG_S t9, -LONGSIZE(t2)/* Store CVMS    
 54         .set reorder                              
 55                                                   
 56         /* Disable access to CVMSEG */            
 57         dmfc0   t0, $11,7       /* CvmMemCtl *    
 58         xori    t0, t0, 0x40    /* Bit 6 is CV    
 59         dmtc0   t0, $11,7       /* CvmMemCtl *    
 60 #endif                                            
 61 3:                                                
 62                                                   
 63 #if defined(CONFIG_STACKPROTECTOR) && !defined    
 64         PTR_LA  t8, __stack_chk_guard             
 65         LONG_L  t9, TASK_STACK_CANARY(a1)         
 66         LONG_S  t9, 0(t8)                         
 67 #endif                                            
 68                                                   
 69         /*                                        
 70          * The order of restoring the register    
 71          * updating $28, $29 and kernelsp with    
 72          */                                       
 73         move    $28, a2                           
 74         cpu_restore_nonscratch a1                 
 75                                                   
 76         PTR_ADDU        t0, $28, _THREAD_SIZE     
 77         set_saved_sp    t0, t1, t2                
 78                                                   
 79         mfc0    t1, CP0_STATUS          /* Do     
 80         li      a3, 0xff01                        
 81         and     t1, a3                            
 82         LONG_L  a2, THREAD_STATUS(a1)             
 83         nor     a3, $0, a3                        
 84         and     a2, a3                            
 85         or      a2, t1                            
 86         mtc0    a2, CP0_STATUS                    
 87         move    v0, a0                            
 88         jr      ra                                
 89         END(resume)                               
 90                                                   
 91 /*                                                
 92  * void octeon_cop2_save(struct octeon_cop2_st    
 93  */                                               
 94         .align  7                                 
 95         .set push                                 
 96         .set noreorder                            
 97         LEAF(octeon_cop2_save)                    
 98                                                   
 99         dmfc0   t9, $9,7        /* CvmCtl regi    
100                                                   
101         /* Save the COP2 CRC state */             
102         dmfc2   t0, 0x0201                        
103         dmfc2   t1, 0x0202                        
104         dmfc2   t2, 0x0200                        
105         sd      t0, OCTEON_CP2_CRC_IV(a0)         
106         sd      t1, OCTEON_CP2_CRC_LENGTH(a0)     
107         /* Skip next instructions if CvmCtl[NO    
108         bbit1   t9, 28, 1f                        
109          sd     t2, OCTEON_CP2_CRC_POLY(a0)       
110                                                   
111         /* Save the LLM state */                  
112         dmfc2   t0, 0x0402                        
113         dmfc2   t1, 0x040A                        
114         sd      t0, OCTEON_CP2_LLM_DAT(a0)        
115                                                   
116 1:      bbit1   t9, 26, 3f      /* done if Cvm    
117          sd     t1, OCTEON_CP2_LLM_DAT+8(a0)      
118                                                   
119         /* Save the COP2 crypto state */          
120         /* this part is mostly common to both     
121         dmfc2   t0, 0x0084                        
122         dmfc2   t1, 0x0080                        
123         dmfc2   t2, 0x0081                        
124         dmfc2   t3, 0x0082                        
125         sd      t0, OCTEON_CP2_3DES_IV(a0)        
126         dmfc2   t0, 0x0088                        
127         sd      t1, OCTEON_CP2_3DES_KEY(a0)       
128         dmfc2   t1, 0x0111                        
129         sd      t2, OCTEON_CP2_3DES_KEY+8(a0)     
130         dmfc2   t2, 0x0102                        
131         sd      t3, OCTEON_CP2_3DES_KEY+16(a0)    
132         dmfc2   t3, 0x0103                        
133         sd      t0, OCTEON_CP2_3DES_RESULT(a0)    
134         dmfc2   t0, 0x0104                        
135         sd      t1, OCTEON_CP2_AES_INP0(a0)       
136         dmfc2   t1, 0x0105                        
137         sd      t2, OCTEON_CP2_AES_IV(a0)         
138         dmfc2   t2, 0x0106                        
139         sd      t3, OCTEON_CP2_AES_IV+8(a0)       
140         dmfc2   t3, 0x0107                        
141         sd      t0, OCTEON_CP2_AES_KEY(a0)        
142         dmfc2   t0, 0x0110                        
143         sd      t1, OCTEON_CP2_AES_KEY+8(a0)      
144         dmfc2   t1, 0x0100                        
145         sd      t2, OCTEON_CP2_AES_KEY+16(a0)     
146         dmfc2   t2, 0x0101                        
147         sd      t3, OCTEON_CP2_AES_KEY+24(a0)     
148         mfc0    v0, $15,0       /* Get the pro    
149         sd      t0, OCTEON_CP2_AES_KEYLEN(a0)     
150         li      v1, 0x000d0000  /* This is the    
151         sd      t1, OCTEON_CP2_AES_RESULT(a0)     
152         /* Skip to the Pass1 version of the re    
153         beq     v0, v1, 2f                        
154          sd     t2, OCTEON_CP2_AES_RESULT+8(a0    
155                                                   
156         /* the non-pass1 state when !CvmCtl[NO    
157         dmfc2   t1, 0x0240                        
158         dmfc2   t2, 0x0241                        
159         ori     v1, v1, 0x9500 /* lowest OCTEO    
160         dmfc2   t3, 0x0242                        
161         subu    v1, v0, v1 /* prid - lowest OC    
162         dmfc2   t0, 0x0243                        
163         sd      t1, OCTEON_CP2_HSH_DATW(a0)       
164         dmfc2   t1, 0x0244                        
165         sd      t2, OCTEON_CP2_HSH_DATW+8(a0)     
166         dmfc2   t2, 0x0245                        
167         sd      t3, OCTEON_CP2_HSH_DATW+16(a0)    
168         dmfc2   t3, 0x0246                        
169         sd      t0, OCTEON_CP2_HSH_DATW+24(a0)    
170         dmfc2   t0, 0x0247                        
171         sd      t1, OCTEON_CP2_HSH_DATW+32(a0)    
172         dmfc2   t1, 0x0248                        
173         sd      t2, OCTEON_CP2_HSH_DATW+40(a0)    
174         dmfc2   t2, 0x0249                        
175         sd      t3, OCTEON_CP2_HSH_DATW+48(a0)    
176         dmfc2   t3, 0x024A                        
177         sd      t0, OCTEON_CP2_HSH_DATW+56(a0)    
178         dmfc2   t0, 0x024B                        
179         sd      t1, OCTEON_CP2_HSH_DATW+64(a0)    
180         dmfc2   t1, 0x024C                        
181         sd      t2, OCTEON_CP2_HSH_DATW+72(a0)    
182         dmfc2   t2, 0x024D                        
183         sd      t3, OCTEON_CP2_HSH_DATW+80(a0)    
184         dmfc2   t3, 0x024E                        
185         sd      t0, OCTEON_CP2_HSH_DATW+88(a0)    
186         dmfc2   t0, 0x0250                        
187         sd      t1, OCTEON_CP2_HSH_DATW+96(a0)    
188         dmfc2   t1, 0x0251                        
189         sd      t2, OCTEON_CP2_HSH_DATW+104(a0    
190         dmfc2   t2, 0x0252                        
191         sd      t3, OCTEON_CP2_HSH_DATW+112(a0    
192         dmfc2   t3, 0x0253                        
193         sd      t0, OCTEON_CP2_HSH_IVW(a0)        
194         dmfc2   t0, 0x0254                        
195         sd      t1, OCTEON_CP2_HSH_IVW+8(a0)      
196         dmfc2   t1, 0x0255                        
197         sd      t2, OCTEON_CP2_HSH_IVW+16(a0)     
198         dmfc2   t2, 0x0256                        
199         sd      t3, OCTEON_CP2_HSH_IVW+24(a0)     
200         dmfc2   t3, 0x0257                        
201         sd      t0, OCTEON_CP2_HSH_IVW+32(a0)     
202         dmfc2   t0, 0x0258                        
203         sd      t1, OCTEON_CP2_HSH_IVW+40(a0)     
204         dmfc2   t1, 0x0259                        
205         sd      t2, OCTEON_CP2_HSH_IVW+48(a0)     
206         dmfc2   t2, 0x025E                        
207         sd      t3, OCTEON_CP2_HSH_IVW+56(a0)     
208         dmfc2   t3, 0x025A                        
209         sd      t0, OCTEON_CP2_GFM_MULT(a0)       
210         dmfc2   t0, 0x025B                        
211         sd      t1, OCTEON_CP2_GFM_MULT+8(a0)     
212         sd      t2, OCTEON_CP2_GFM_POLY(a0)       
213         sd      t3, OCTEON_CP2_GFM_RESULT(a0)     
214         bltz    v1, 4f                            
215          sd     t0, OCTEON_CP2_GFM_RESULT+8(a0    
216         /* OCTEON III things*/                    
217         dmfc2   t0, 0x024F                        
218         dmfc2   t1, 0x0050                        
219         sd      t0, OCTEON_CP2_SHA3(a0)           
220         sd      t1, OCTEON_CP2_SHA3+8(a0)         
221 4:                                                
222         jr      ra                                
223          nop                                      
224                                                   
225 2:      /* pass 1 special stuff when !CvmCtl[N    
226         dmfc2   t3, 0x0040                        
227         dmfc2   t0, 0x0041                        
228         dmfc2   t1, 0x0042                        
229         dmfc2   t2, 0x0043                        
230         sd      t3, OCTEON_CP2_HSH_DATW(a0)       
231         dmfc2   t3, 0x0044                        
232         sd      t0, OCTEON_CP2_HSH_DATW+8(a0)     
233         dmfc2   t0, 0x0045                        
234         sd      t1, OCTEON_CP2_HSH_DATW+16(a0)    
235         dmfc2   t1, 0x0046                        
236         sd      t2, OCTEON_CP2_HSH_DATW+24(a0)    
237         dmfc2   t2, 0x0048                        
238         sd      t3, OCTEON_CP2_HSH_DATW+32(a0)    
239         dmfc2   t3, 0x0049                        
240         sd      t0, OCTEON_CP2_HSH_DATW+40(a0)    
241         dmfc2   t0, 0x004A                        
242         sd      t1, OCTEON_CP2_HSH_DATW+48(a0)    
243         sd      t2, OCTEON_CP2_HSH_IVW(a0)        
244         sd      t3, OCTEON_CP2_HSH_IVW+8(a0)      
245         sd      t0, OCTEON_CP2_HSH_IVW+16(a0)     
246                                                   
247 3:      /* pass 1 or CvmCtl[NOCRYPTO] set */      
248         jr      ra                                
249          nop                                      
250         END(octeon_cop2_save)                     
251         .set pop                                  
252                                                   
253 /*                                                
254  * void octeon_cop2_restore(struct octeon_cop2    
255  */                                               
256         .align  7                                 
257         .set push                                 
258         .set noreorder                            
259         LEAF(octeon_cop2_restore)                 
260         /* First cache line was prefetched bef    
261         pref    4,  128(a0)                       
262         dmfc0   t9, $9,7        /* CvmCtl regi    
263                                                   
264         pref    4,  256(a0)                       
265         ld      t0, OCTEON_CP2_CRC_IV(a0)         
266         pref    4,  384(a0)                       
267         ld      t1, OCTEON_CP2_CRC_LENGTH(a0)     
268         ld      t2, OCTEON_CP2_CRC_POLY(a0)       
269                                                   
270         /* Restore the COP2 CRC state */          
271         dmtc2   t0, 0x0201                        
272         dmtc2   t1, 0x1202                        
273         bbit1   t9, 28, 2f      /* Skip LLM if    
274          dmtc2  t2, 0x4200                        
275                                                   
276         /* Restore the LLM state */               
277         ld      t0, OCTEON_CP2_LLM_DAT(a0)        
278         ld      t1, OCTEON_CP2_LLM_DAT+8(a0)      
279         dmtc2   t0, 0x0402                        
280         dmtc2   t1, 0x040A                        
281                                                   
282 2:                                                
283         bbit1   t9, 26, done_restore    /* don    
284          nop                                      
285                                                   
286         /* Restore the COP2 crypto state commo    
287         ld      t0, OCTEON_CP2_3DES_IV(a0)        
288         ld      t1, OCTEON_CP2_3DES_KEY(a0)       
289         ld      t2, OCTEON_CP2_3DES_KEY+8(a0)     
290         dmtc2   t0, 0x0084                        
291         ld      t0, OCTEON_CP2_3DES_KEY+16(a0)    
292         dmtc2   t1, 0x0080                        
293         ld      t1, OCTEON_CP2_3DES_RESULT(a0)    
294         dmtc2   t2, 0x0081                        
295         ld      t2, OCTEON_CP2_AES_INP0(a0) /*    
296         dmtc2   t0, 0x0082                        
297         ld      t0, OCTEON_CP2_AES_IV(a0)         
298         dmtc2   t1, 0x0098                        
299         ld      t1, OCTEON_CP2_AES_IV+8(a0)       
300         dmtc2   t2, 0x010A                  /*    
301         ld      t2, OCTEON_CP2_AES_KEY(a0)        
302         dmtc2   t0, 0x0102                        
303         ld      t0, OCTEON_CP2_AES_KEY+8(a0)      
304         dmtc2   t1, 0x0103                        
305         ld      t1, OCTEON_CP2_AES_KEY+16(a0)     
306         dmtc2   t2, 0x0104                        
307         ld      t2, OCTEON_CP2_AES_KEY+24(a0)     
308         dmtc2   t0, 0x0105                        
309         ld      t0, OCTEON_CP2_AES_KEYLEN(a0)     
310         dmtc2   t1, 0x0106                        
311         ld      t1, OCTEON_CP2_AES_RESULT(a0)     
312         dmtc2   t2, 0x0107                        
313         ld      t2, OCTEON_CP2_AES_RESULT+8(a0    
314         mfc0    t3, $15,0       /* Get the pro    
315         dmtc2   t0, 0x0110                        
316         li      v0, 0x000d0000  /* This is the    
317         dmtc2   t1, 0x0100                        
318         bne     v0, t3, 3f      /* Skip the ne    
319          dmtc2  t2, 0x0101                        
320                                                   
321         /* this code is specific for pass 1 */    
322         ld      t0, OCTEON_CP2_HSH_DATW(a0)       
323         ld      t1, OCTEON_CP2_HSH_DATW+8(a0)     
324         ld      t2, OCTEON_CP2_HSH_DATW+16(a0)    
325         dmtc2   t0, 0x0040                        
326         ld      t0, OCTEON_CP2_HSH_DATW+24(a0)    
327         dmtc2   t1, 0x0041                        
328         ld      t1, OCTEON_CP2_HSH_DATW+32(a0)    
329         dmtc2   t2, 0x0042                        
330         ld      t2, OCTEON_CP2_HSH_DATW+40(a0)    
331         dmtc2   t0, 0x0043                        
332         ld      t0, OCTEON_CP2_HSH_DATW+48(a0)    
333         dmtc2   t1, 0x0044                        
334         ld      t1, OCTEON_CP2_HSH_IVW(a0)        
335         dmtc2   t2, 0x0045                        
336         ld      t2, OCTEON_CP2_HSH_IVW+8(a0)      
337         dmtc2   t0, 0x0046                        
338         ld      t0, OCTEON_CP2_HSH_IVW+16(a0)     
339         dmtc2   t1, 0x0048                        
340         dmtc2   t2, 0x0049                        
341         b done_restore   /* unconditional bran    
342          dmtc2  t0, 0x004A                        
343                                                   
344 3:      /* this is post-pass1 code */             
345         ld      t2, OCTEON_CP2_HSH_DATW(a0)       
346         ori     v0, v0, 0x9500 /* lowest OCTEO    
347         ld      t0, OCTEON_CP2_HSH_DATW+8(a0)     
348         ld      t1, OCTEON_CP2_HSH_DATW+16(a0)    
349         dmtc2   t2, 0x0240                        
350         ld      t2, OCTEON_CP2_HSH_DATW+24(a0)    
351         dmtc2   t0, 0x0241                        
352         ld      t0, OCTEON_CP2_HSH_DATW+32(a0)    
353         dmtc2   t1, 0x0242                        
354         ld      t1, OCTEON_CP2_HSH_DATW+40(a0)    
355         dmtc2   t2, 0x0243                        
356         ld      t2, OCTEON_CP2_HSH_DATW+48(a0)    
357         dmtc2   t0, 0x0244                        
358         ld      t0, OCTEON_CP2_HSH_DATW+56(a0)    
359         dmtc2   t1, 0x0245                        
360         ld      t1, OCTEON_CP2_HSH_DATW+64(a0)    
361         dmtc2   t2, 0x0246                        
362         ld      t2, OCTEON_CP2_HSH_DATW+72(a0)    
363         dmtc2   t0, 0x0247                        
364         ld      t0, OCTEON_CP2_HSH_DATW+80(a0)    
365         dmtc2   t1, 0x0248                        
366         ld      t1, OCTEON_CP2_HSH_DATW+88(a0)    
367         dmtc2   t2, 0x0249                        
368         ld      t2, OCTEON_CP2_HSH_DATW+96(a0)    
369         dmtc2   t0, 0x024A                        
370         ld      t0, OCTEON_CP2_HSH_DATW+104(a0    
371         dmtc2   t1, 0x024B                        
372         ld      t1, OCTEON_CP2_HSH_DATW+112(a0    
373         dmtc2   t2, 0x024C                        
374         ld      t2, OCTEON_CP2_HSH_IVW(a0)        
375         dmtc2   t0, 0x024D                        
376         ld      t0, OCTEON_CP2_HSH_IVW+8(a0)      
377         dmtc2   t1, 0x024E                        
378         ld      t1, OCTEON_CP2_HSH_IVW+16(a0)     
379         dmtc2   t2, 0x0250                        
380         ld      t2, OCTEON_CP2_HSH_IVW+24(a0)     
381         dmtc2   t0, 0x0251                        
382         ld      t0, OCTEON_CP2_HSH_IVW+32(a0)     
383         dmtc2   t1, 0x0252                        
384         ld      t1, OCTEON_CP2_HSH_IVW+40(a0)     
385         dmtc2   t2, 0x0253                        
386         ld      t2, OCTEON_CP2_HSH_IVW+48(a0)     
387         dmtc2   t0, 0x0254                        
388         ld      t0, OCTEON_CP2_HSH_IVW+56(a0)     
389         dmtc2   t1, 0x0255                        
390         ld      t1, OCTEON_CP2_GFM_MULT(a0)       
391         dmtc2   t2, 0x0256                        
392         ld      t2, OCTEON_CP2_GFM_MULT+8(a0)     
393         dmtc2   t0, 0x0257                        
394         ld      t0, OCTEON_CP2_GFM_POLY(a0)       
395         dmtc2   t1, 0x0258                        
396         ld      t1, OCTEON_CP2_GFM_RESULT(a0)     
397         dmtc2   t2, 0x0259                        
398         ld      t2, OCTEON_CP2_GFM_RESULT+8(a0    
399         dmtc2   t0, 0x025E                        
400         subu    v0, t3, v0 /* prid - lowest OC    
401         dmtc2   t1, 0x025A                        
402         bltz    v0, done_restore                  
403          dmtc2  t2, 0x025B                        
404         /* OCTEON III things*/                    
405         ld      t0, OCTEON_CP2_SHA3(a0)           
406         ld      t1, OCTEON_CP2_SHA3+8(a0)         
407         dmtc2   t0, 0x0051                        
408         dmtc2   t1, 0x0050                        
409 done_restore:                                     
410         jr      ra                                
411          nop                                      
412         END(octeon_cop2_restore)                  
413         .set pop                                  
414                                                   
415 /*                                                
416  * void octeon_mult_save()                        
417  * sp is assumed to point to a struct pt_regs     
418  *                                                
419  * NOTE: This is called in SAVE_TEMP in stackf    
420  *       safely modify v1,k0, k1,$10-$15, and     
421  *       be overwritten with a processor speci    
422  */                                               
423         .p2align 7                                
424         .set push                                 
425         .set noreorder                            
426         LEAF(octeon_mult_save)                    
427         jr      ra                                
428          nop                                      
429         .space 30 * 4, 0                          
430         EXPORT(octeon_mult_save_end)              
431         END(octeon_mult_save)                     
432                                                   
433         LEAF(octeon_mult_save2)                   
434         /* Save the multiplier state OCTEON II    
435         v3mulu  k0, $0, $0                        
436         v3mulu  k1, $0, $0                        
437         sd      k0, PT_MTP(sp)        /* PT_MT    
438         v3mulu  k0, $0, $0                        
439         sd      k1, PT_MTP+8(sp)      /* PT_MT    
440         ori     k1, $0, 1                         
441         v3mulu  k1, k1, $0                        
442         sd      k0, PT_MTP+16(sp)     /* PT_MT    
443         v3mulu  k0, $0, $0                        
444         sd      k1, PT_MPL(sp)        /* PT_MP    
445         v3mulu  k1, $0, $0                        
446         sd      k0, PT_MPL+8(sp)      /* PT_MP    
447         jr      ra                                
448          sd     k1, PT_MPL+16(sp)     /* PT_MP    
449         EXPORT(octeon_mult_save2_end)             
450         END(octeon_mult_save2)                    
451                                                   
452         LEAF(octeon_mult_save3)                   
453         /* Save the multiplier state OCTEON II    
454         v3mulu  $10, $0, $0             /* rea    
455         v3mulu  $11, $0, $0             /* rea    
456         v3mulu  $12, $0, $0             /* rea    
457         sd      $10, PT_MTP+(0*8)(sp)   /* sto    
458         v3mulu  $10, $0, $0             /* rea    
459         sd      $11, PT_MTP+(1*8)(sp)   /*  st    
460         v3mulu  $11, $0, $0             /* rea    
461         sd      $12, PT_MTP+(2*8)(sp)   /* sto    
462         ori     $13, $0, 1                        
463         v3mulu  $12, $0, $0             /* rea    
464         sd      $10, PT_MTP+(3*8)(sp)   /* sto    
465         v3mulu  $13, $13, $0            /* P4-    
466         sd      $11, PT_MTP+(4*8)(sp)   /* sto    
467         v3mulu  $10, $0, $0             /* rea    
468         sd      $12, PT_MTP+(5*8)(sp)   /* sto    
469         v3mulu  $11, $0, $0             /* rea    
470         sd      $13, PT_MPL+(0*8)(sp)   /* sto    
471         v3mulu  $12, $0, $0             /* rea    
472         sd      $10, PT_MPL+(1*8)(sp)   /* sto    
473         v3mulu  $10, $0, $0             /* rea    
474         sd      $11, PT_MPL+(2*8)(sp)   /* sto    
475         v3mulu  $11, $0, $0             /* rea    
476         sd      $12, PT_MPL+(3*8)(sp)   /* sto    
477         sd      $10, PT_MPL+(4*8)(sp)   /* sto    
478         jr      ra                                
479          sd     $11, PT_MPL+(5*8)(sp)   /* sto    
480         EXPORT(octeon_mult_save3_end)             
481         END(octeon_mult_save3)                    
482         .set pop                                  
483                                                   
484 /*                                                
485  * void octeon_mult_restore()                     
486  * sp is assumed to point to a struct pt_regs     
487  *                                                
488  * NOTE: This is called in RESTORE_TEMP in sta    
489  */                                               
490         .p2align 7                                
491         .set push                                 
492         .set noreorder                            
493         LEAF(octeon_mult_restore)                 
494         jr      ra                                
495          nop                                      
496         .space 30 * 4, 0                          
497         EXPORT(octeon_mult_restore_end)           
498         END(octeon_mult_restore)                  
499                                                   
500         LEAF(octeon_mult_restore2)                
501         ld      v0, PT_MPL(sp)          /* MPL    
502         ld      v1, PT_MPL+8(sp)        /* MPL    
503         ld      k0, PT_MPL+16(sp)       /* MPL    
504         /* Restore the multiplier state */        
505         ld      k1, PT_MTP+16(sp)       /* P2     
506         mtm0    v0                      /* MPL    
507         ld      v0, PT_MTP+8(sp)        /* P1     
508         mtm1    v1                      /* MPL    
509         ld      v1, PT_MTP(sp)          /* P0     
510         mtm2    k0                      /* MPL    
511         mtp2    k1                      /* P2     
512         mtp1    v0                      /* P1     
513         jr      ra                                
514          mtp0   v1                      /* P0     
515         EXPORT(octeon_mult_restore2_end)          
516         END(octeon_mult_restore2)                 
517                                                   
518         LEAF(octeon_mult_restore3)                
519         ld      $12, PT_MPL+(0*8)(sp)   /* rea    
520         ld      $13, PT_MPL+(3*8)(sp)   /* rea    
521         ld      $10, PT_MPL+(1*8)(sp)   /* rea    
522         ld      $11, PT_MPL+(4*8)(sp)   /* rea    
523         .word   0x718d0008                        
524         /* mtm0 $12, $13                   res    
525         ld      $12, PT_MPL+(2*8)(sp)   /* rea    
526         .word   0x714b000c                        
527         /* mtm1 $10, $11                   res    
528         ld      $13, PT_MPL+(5*8)(sp)   /* rea    
529         ld      $10, PT_MTP+(0*8)(sp)   /* rea    
530         ld      $11, PT_MTP+(3*8)(sp)   /* rea    
531         .word   0x718d000d                        
532         /* mtm2 $12, $13                   res    
533         ld      $12, PT_MTP+(1*8)(sp)   /* rea    
534         .word   0x714b0009                        
535         /* mtp0 $10, $11                   res    
536         ld      $13, PT_MTP+(4*8)(sp)   /* rea    
537         ld      $10, PT_MTP+(2*8)(sp)   /* rea    
538         ld      $11, PT_MTP+(5*8)(sp)   /* rea    
539         .word   0x718d000a                        
540         /* mtp1 $12, $13                   res    
541         jr      ra                                
542         .word   0x714b000b                        
543         /* mtp2 $10, $11                   res    
544                                                   
545         EXPORT(octeon_mult_restore3_end)          
546         END(octeon_mult_restore3)                 
547         .set pop                                  
                                                      

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