a415963a727ea32f81132c39e0dc6482cbcc5fbf
[cacao.git] / src / vm / jit / powerpc / asmpart.S
1 /* src/vm/jit/powerpc/asmpart.S - Java-C interface functions for PowerPC
2                 
3    Copyright (C) 1996-2005, 2006 R. Grafl, A. Krall, C. Kruegel,
4    C. Oates, R. Obermaisser, M. Platter, M. Probst, S. Ring,
5    E. Steiner, C. Thalinger, D. Thuernbeck, P. Tomsich, C. Ullrich,
6    J. Wenninger, Institut f. Computersprachen - TU Wien
7
8    This file is part of CACAO.
9
10    This program is free software.text;  you can redistribute it and/or
11    modify it under the terms of the GNU General Public License as
12    published by the Free Software Foundation;  either version 2, or (at
13    your option) any later version.
14
15    This program is distributed in the hope that it will be useful, but
16    WITHOUT ANY WARRANTY ;  without even the implied warranty of
17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
18    General Public License for more details.
19
20    You should have received a copy of the GNU General Public License
21    along with this program;  if not, write to the Free Software
22    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
23    02110-1301, USA.
24
25    Contact: cacao@cacaojvm.org
26
27    Authors: Andreas Krall
28             Reinhard Grafl
29             Stefan Ring
30
31    Changes: Christian Thalinger
32             Edwin Steiner
33
34    $Id: asmpart.S 6182 2006-12-12 21:12:23Z twisti $
35
36 */
37
38
39 #include "config.h"
40
41 #include "md-abi.h"
42 #include "md-asm.h"
43
44 #include "vm/jit/abi-asm.h"
45 #include "vm/jit/methodheader.h"
46 #include "vm/jit/powerpc/offsets.h"
47
48
49         .text
50
51         .align 2
52
53
54 /* export functions ***********************************************************/
55
56         .globl asm_vm_call_method
57         .globl asm_vm_call_method_int
58         .globl asm_vm_call_method_long
59         .globl asm_vm_call_method_float
60         .globl asm_vm_call_method_double
61
62         .globl asm_vm_call_method_exception_handler
63
64         .globl asm_call_jit_compiler
65
66         .globl asm_handle_nat_exception
67         .globl asm_handle_exception
68
69         .globl asm_abstractmethoderror
70
71         .globl asm_patcher_wrapper
72
73         .globl asm_replacement_out
74         .globl asm_replacement_in
75
76         .globl asm_cacheflush
77         .globl asm_criticalsections
78         .globl asm_getclassvalues_atomic
79
80
81 /* asm_vm_call_method **********************************************************
82 *                                                                              *
83 *   This function calls a Java-method (which possibly needs compilation)       *
84 *   with up to 4 address parameters.                                           *
85 *                                                                              *
86 *   This functions calls the JIT-compiler which eventually translates the      *
87 *   method into machine code.                                                  *
88 *                                                                              *
89 *   C-prototype:                                                               *
90 *    javaobject_header *asm_calljavamethod (methodinfo *m,                     *
91 *         void *arg1, void *arg2, void *arg3, void *arg4);                     *
92 *                                                                              *
93 *******************************************************************************/
94
95         .align 2
96
97         .long   0                         /* catch type all                       */
98         .long   0                         /* exception handler pc                 */
99         .long   0                         /* end pc                               */
100         .long   0                         /* start pc                             */
101         .long   1                         /* extable size                         */
102         .long   0                         /* line number table start              */
103         .long   0                         /* line number table size               */
104         .long   0                         /* fltsave                              */
105         .long   0                         /* intsave                              */
106         .long   0                         /* IsLeaf                               */
107         .long   0                         /* IsSync                               */
108         .long   0                         /* frame size                           */
109         .long   0                         /* codeinfo pointer                     */
110
111 asm_vm_call_method:
112 asm_vm_call_method_int:
113 asm_vm_call_method_long:
114 asm_vm_call_method_float:
115 asm_vm_call_method_double:
116         mflr    r0
117         stw     r0,LA_LR_OFFSET(sp)
118         stwu    sp,-40*4(sp)              /* keep stack 16-byte aligned           */
119
120         stw     s0,8*4(sp)                /* save used callee saved registers     */
121         stw     a0,9*4(sp)                /* save method pointer for compiler     */
122
123 #if defined(__DARWIN__)
124         stw     itmp1,10*4(sp)            /* register r11 is callee saved         */
125 #endif
126         stw     pv,11*4(sp)               /* save PV register                     */
127
128         stw     itmp3,12*4(sp)            /* registers r14-r31 are callee saved   */
129         stfd    ftmp1,14*4(sp)            /* registers f14-f31 are callee saved   */
130         stfd    ftmp2,16*4(sp)
131
132 #if defined(__DARWIN__)
133         stw     t1,18*4(sp)
134         stw     t2,19*4(sp)
135         stw     t3,20*4(sp)
136         stw     t4,21*4(sp)
137         stw     t5,22*4(sp)
138         stw     t6,23*4(sp)
139         stw     t7,24*4(sp)
140
141         stfd    ft0,26*4(sp)
142         stfd    ft1,28*4(sp)
143         stfd    ft2,30*4(sp)
144         stfd    ft3,32*4(sp)
145         stfd    ft4,34*4(sp)
146         stfd    ft5,36*4(sp)
147 #else
148         SAVE_TEMPORARY_REGISTERS(18)      /* the offset has to be even            */
149 #endif
150
151         mr      itmp2,a1                  /* arg count                            */
152         mr      itmp1,a2                  /* pointer to arg block                 */
153
154         mr      t4,itmp2                  /* save argument count                  */
155         mr      t5,itmp1                  /* save argument block pointer          */
156
157         mr      s0,sp                     /* save current sp to s0                */
158
159         addi    itmp1,itmp1,-sizevmarg    /* initialize pointer (smaller code)    */
160         addi    itmp2,itmp2,1             /* initialize argument count            */
161         li      t0,0                      /* initialize integer argument counter  */
162         li      t1,0                      /* initialize float argument counter    */
163         li      t6,0                      /* initialize integer register counter  */
164 #if defined(__DARWIN__)
165         li      t7,0                      /* initialize stack slot counter        */
166 #endif
167
168         mflr    r0                        /* save link register (PIC code)        */
169         bl      L_asm_vm_call_method_get_pc
170 L_asm_vm_call_method_get_pc:
171         mflr    t3                        /* t3 contains the current pc           */
172         mtlr    r0
173
174 L_register_copy:
175         addi    itmp1,itmp1,sizevmarg     /* goto next argument block             */
176         addi    itmp2,itmp2,-1            /* argument count - 1                   */
177         mr.     itmp2,itmp2
178         beq     L_register_copy_done
179
180         lwz     itmp3,offvmargtype+4(itmp1)
181         andi.   r0,itmp3,0x0002           /* is this a float/double type?         */
182         bne     L_register_handle_float
183         
184 L_register_handle_int:
185         cmpwi   t6,INT_ARG_CNT            /* are we out of integer argument       */
186         beq     L_register_copy           /* registers? yes, next loop            */
187
188         andi.   r0,itmp3,0x0001           /* is this a 2-word type?               */
189         bne     L_register_handle_long
190
191 #if defined(__DARWIN__)
192         addis   itmp3,t3,ha16(L_jumptable_int - L_asm_vm_call_method_get_pc)
193         la      itmp3,lo16(L_jumptable_int - L_asm_vm_call_method_get_pc)(itmp3)
194 #else
195         lis     itmp3,L_jumptable_int@ha
196         addi    itmp3,itmp3,L_jumptable_int@l
197 #endif
198
199         slwi    t2,t6,2                   /* multiple of 4-bytes                  */
200         add     itmp3,itmp3,t2            /* calculate address of jumptable       */
201         lwz     itmp3,0(itmp3)            /* load function address                */
202         mtctr   itmp3
203         addi    t0,t0,1                   /* integer argument counter             */
204         addi    t6,t6,1                   /* integer argument register counter    */
205 #if defined(__DARWIN__)
206         addi    t7,t7,1                   /* stack slot counter                   */
207 #endif
208         bctr
209
210 L_register_handle_long:
211 #if defined(__DARWIN__)
212         addis   itmp3,t3,ha16(L_jumptable_long - L_asm_vm_call_method_get_pc)
213         la      itmp3,lo16(L_jumptable_long - L_asm_vm_call_method_get_pc)(itmp3)
214 #else
215         lis     itmp3,L_jumptable_long@ha
216         addi    itmp3,itmp3,L_jumptable_long@l
217 #endif
218 #if !defined(__DARWIN__)
219         addi    t6,t6,1                   /* align to even numbers                */
220         andi.   t6,t6,0xfffe
221 #endif
222
223         cmpwi   t6,(INT_ARG_CNT - 1)      /* are we out of integer argument       */
224         blt     L_register_handle_long_continue /* registers?                     */
225
226         li      t6,INT_ARG_CNT            /* yes, set integer argument register   */
227         b       L_register_copy           /* count to max and next loop           */
228
229 L_register_handle_long_continue:
230         slwi    t2,t6,2                   /* multiple of 4-bytes                  */
231         add     itmp3,itmp3,t2            /* calculate address of jumptable       */
232         lwz     itmp3,0(itmp3)            /* load function address                */
233         mtctr   itmp3
234         addi    t0,t0,1                   /* integer argument counter             */
235         addi    t6,t6,2                   /* integer argument register counter    */
236 #if defined(__DARWIN__)
237         addi    t7,t7,2                   /* stack slot counter                   */
238 #endif
239         bctr
240
241 L_register_handle_float:
242         cmpwi   t1,FLT_ARG_CNT            /* are we out of float argument         */
243         beq     L_register_copy           /* registers? yes, next loop            */
244
245         andi.   r0,itmp3,0x0001           /* is this a 2-word type?               */
246         bne     L_register_handle_double
247
248 #if defined(__DARWIN__)
249         addis   itmp3,t3,ha16(L_jumptable_float - L_asm_vm_call_method_get_pc)
250         la      itmp3,lo16(L_jumptable_float - L_asm_vm_call_method_get_pc)(itmp3)
251 #else
252         lis     itmp3,L_jumptable_float@ha
253         addi    itmp3,itmp3,L_jumptable_float@l
254 #endif
255
256         slwi    t2,t1,2                   /* multiple of 4-bytes                  */
257         add     itmp3,itmp3,t2            /* calculate address of jumptable       */
258         lwz     itmp3,0(itmp3)            /* load function address                */
259         mtctr   itmp3
260         addi    t1,t1,1                   /* float argument counter               */
261 #if defined(__DARWIN__)
262         addi    t7,t7,1                   /* stack slot counter                   */
263         addi    t6,t6,1                   /* skip 1 integer argument register     */
264 #endif
265         bctr
266
267 L_register_handle_double:
268 #if defined(__DARWIN__)
269         addis   itmp3,t3,ha16(L_jumptable_double - L_asm_vm_call_method_get_pc)
270         la      itmp3,lo16(L_jumptable_double - L_asm_vm_call_method_get_pc)(itmp3)
271 #else
272         lis     itmp3,L_jumptable_double@ha
273         addi    itmp3,itmp3,L_jumptable_double@l
274 #endif
275
276         slwi    t2,t1,2                   /* multiple of 4-bytes                  */
277         add     itmp3,itmp3,t2            /* calculate address of jumptable       */
278         lwz     itmp3,0(itmp3)            /* load function address                */
279         mtctr   itmp3
280         addi    t1,t1,1                   /* float argument counter               */
281 #if defined(__DARWIN__)
282         addi    t7,t7,2                   /* stack slot counter                   */
283         addi    t6,t6,2                   /* skip 2 integer argument registers    */
284 #endif
285         bctr
286
287 L_register_copy_done:
288                                           /* calculate remaining arguments        */
289         sub     itmp3,t4,t0               /* - integer arguments in registers     */
290         sub     itmp3,itmp3,t1            /* - float arguments in registers       */
291         mr.     itmp3,itmp3
292         beq     L_stack_copy_done
293
294         mr      itmp2,t4                  /* restore argument count               */
295         mr      itmp1,t5                  /* restore argument block pointer       */
296
297         slwi    t4,itmp3,3                /* XXX use 8-bytes slots for now        */
298         addi    t4,t4,LA_SIZE             /* add size of linkage area             */
299
300 #if defined(__DARWIN__)
301         slwi    t5,t7,2                   /* add stack space for arguments        */
302         add     t4,t4,t5
303 #endif
304
305         sub     sp,sp,t4
306
307         mr      t6,sp                     /* use t6 as temporary sp               */
308         addi    t6,t6,LA_SIZE             /* skip linkage area                    */
309 #if defined(__DARWIN__)
310         add     t6,t6,t5                  /* skip stack space for arguments       */
311 #endif
312
313         addi    itmp1,itmp1,-sizevmarg    /* initialize pointer (smaller code)    */
314         addi    itmp2,itmp2,1             /* initialize argument count            */
315         
316 L_stack_copy_loop:
317         addi    itmp1,itmp1,sizevmarg     /* goto next argument block             */
318         addi    itmp2,itmp2,-1            /* argument count - 1                   */
319         mr.     itmp2,itmp2
320         beq     L_stack_copy_done
321         
322         lwz     itmp3,offvmargtype+4(itmp1)
323         andi.   r0,itmp3,0x0002           /* is this a float/double type?         */
324         bne     L_stack_handle_float
325
326 L_stack_handle_int:
327         addi    t0,t0,-1                  /* arguments assigned to registers      */
328         mr.     t0,t0
329         bge     L_stack_copy_loop
330
331         andi.   r0,itmp3,0x0001           /* is this a 2-word type?               */
332         bne     L_stack_handle_long
333
334         lwz     itmp3,offvmargdata+4(itmp1) /* get integer argument               */
335         stw     itmp3,0(t6)               /* and store it on the stack            */
336         addi    t6,t6,4                   /* increase temporary sp by 1 slot      */
337         b       L_stack_copy_loop
338
339 L_stack_handle_long:
340 #if !defined(__DARWIN__)
341         addi    t6,t6,4                   /* align stack to 8-bytes               */
342         rlwinm  t6,t6,0,30,28             /* clear lower 4-bits                   */
343 #endif
344
345         lwz     itmp3,offvmargdata+0(itmp1) /* get long argument                  */
346         stw     itmp3,0(t6)               /* and store it on the stack            */
347         lwz     itmp3,offvmargdata+4(itmp1)
348         stw     itmp3,4(t6)
349         addi    t6,t6,8                   /* increase temporary sp by 2 slots     */
350         b       L_stack_copy_loop
351                 
352 L_stack_handle_float:
353         addi    t1,t1,-1                  /* arguments assigned to registers      */
354         mr.     t1,t1
355         bge     L_stack_copy_loop
356
357         andi.   r0,itmp3,0x0001           /* is this a 2-word type?               */
358         bne     L_stack_handle_double
359
360         lfs     ftmp3,offvmargdata(itmp1) /* get float argument                   */
361         stfs    ftmp3,0(t6)               /* and store it on the stack            */
362         addi    t6,t6,4                   /* increase temporary sp by 1 slot      */
363         b       L_stack_copy_loop
364
365 L_stack_handle_double:
366 #if !defined(__DARWIN__)
367         addi    t6,t6,4                   /* align stack to 8-bytes               */
368         rlwinm  t6,t6,0,30,28             /* clear lower 4-bits                   */
369 #endif
370
371         lfd     ftmp3,offvmargdata(itmp1) /* get double argument                  */
372         stfd    ftmp3,0(t6)               /* and store it on the stack            */
373         addi    t6,t6,8                   /* increase temporary sp by 2 slots     */
374         b       L_stack_copy_loop
375
376 L_stack_copy_done:
377         lwz     itmp1,9*4(s0)             /* pass method pointer via tmp1         */
378
379 #if defined(__DARWIN__)
380         addis   mptr,t3,ha16(L_asm_call_jit_compiler - L_asm_vm_call_method_get_pc)
381         la      mptr,lo16(L_asm_call_jit_compiler - L_asm_vm_call_method_get_pc)(mptr)
382 #else
383         lis     mptr,L_asm_call_jit_compiler@ha
384         addi    mptr,mptr,L_asm_call_jit_compiler@l
385 #endif
386         stw     mptr,7*4(s0)
387         addi    mptr,s0,7*4
388
389         lwz     pv,0*4(mptr)
390         mtctr   pv
391         bctrl
392 1:
393         mflr    itmp1
394 #if defined(__DARWIN__)
395         addi    pv,itmp1,lo16(asm_vm_call_method - 1b)
396 #else
397         addi    pv,itmp1,(asm_vm_call_method - 1b)@l
398 #endif
399
400 L_asm_vm_call_method_return:
401         mr      sp,s0                     /* restore the function's sp            */
402
403         lwz     s0,8*4(sp)                /* restore used callee saved registers  */
404
405 #if defined(__DARWIN__)
406         lwz     itmp1,10*4(sp)            /* register r11 is callee saved         */
407 #endif
408         lwz     pv,11*4(sp)               /* save PV register                     */
409
410         lwz     itmp3,12*4(sp)
411         lfd     ftmp1,14*4(sp)            /* registers f14-f31 are callee saved   */
412         lfd     ftmp2,16*4(sp)
413
414 #if defined(__DARWIN__)
415         lwz     t1,18*4(sp)
416         lwz     t2,19*4(sp)
417         lwz     t3,20*4(sp)
418         lwz     t4,21*4(sp)
419         lwz     t5,22*4(sp)
420         lwz     t6,23*4(sp)
421         lwz     t7,24*4(sp)
422
423         lfd     ft0,26*4(sp)
424         lfd     ft1,28*4(sp)
425         lfd     ft2,30*4(sp)
426         lfd     ft3,32*4(sp)
427         lfd     ft4,34*4(sp)
428         lfd     ft5,36*4(sp)
429 #else
430         RESTORE_TEMPORARY_REGISTERS(18)   /* the offset has to be even            */
431 #endif
432
433         lwz     r0,40*4+LA_LR_OFFSET(sp)
434         mtlr    r0
435         addi    sp,sp,40*4
436         blr
437
438 asm_vm_call_method_exception_handler:
439         mr      a0,itmp1
440         bl      builtin_throw_exception
441         b       L_asm_vm_call_method_return
442
443
444         .data
445         .align  2
446
447 L_jumptable_int:
448         .long   L_handle_a0
449         .long   L_handle_a1
450         .long   L_handle_a2
451         .long   L_handle_a3
452         .long   L_handle_a4
453         .long   L_handle_a5
454         .long   L_handle_a6
455         .long   L_handle_a7
456
457         .text
458         .align  2
459
460 L_handle_a0:
461         lwz     a0,offvmargdata+4(itmp1)
462         b       L_register_copy
463 L_handle_a1:
464         lwz     a1,offvmargdata+4(itmp1)
465         b       L_register_copy
466 L_handle_a2:
467         lwz     a2,offvmargdata+4(itmp1)
468         b       L_register_copy
469 L_handle_a3:
470         lwz     a3,offvmargdata+4(itmp1)
471         b       L_register_copy
472 L_handle_a4:
473         lwz     a4,offvmargdata+4(itmp1)
474         b       L_register_copy
475 L_handle_a5:
476         lwz     a5,offvmargdata+4(itmp1)
477         b       L_register_copy
478 L_handle_a6:
479         lwz     a6,offvmargdata+4(itmp1)
480         b       L_register_copy
481 L_handle_a7:
482         lwz     a7,offvmargdata+4(itmp1)
483         b       L_register_copy
484
485
486         .data
487         .align  2
488
489 L_jumptable_long:
490 #if defined(__DARWIN__)
491         .long   L_handle_a0_a1
492         .long   L_handle_a1_a2
493         .long   L_handle_a2_a3
494         .long   L_handle_a3_a4
495         .long   L_handle_a4_a5
496         .long   L_handle_a5_a6
497         .long   L_handle_a6_a7
498 #else
499         /* we have two entries here, so we get the even argument register
500         alignment for linux */
501
502         .long   L_handle_a0_a1
503         .long   0
504         .long   L_handle_a2_a3
505         .long   0
506         .long   L_handle_a4_a5
507         .long   0
508         .long   L_handle_a6_a7
509 #endif
510
511         .text
512         .align  2
513
514 L_handle_a0_a1:
515         lwz     a0,offvmargdata+0(itmp1)
516         lwz     a1,offvmargdata+4(itmp1)
517         b       L_register_copy
518 #if defined(__DARWIN__)
519 L_handle_a1_a2:
520         lwz     a1,offvmargdata+0(itmp1)
521         lwz     a2,offvmargdata+4(itmp1)
522         b       L_register_copy
523 #endif
524 L_handle_a2_a3:
525         lwz     a2,offvmargdata+0(itmp1)
526         lwz     a3,offvmargdata+4(itmp1)
527         b       L_register_copy
528 #if defined(__DARWIN__)
529 L_handle_a3_a4:
530         lwz     a3,offvmargdata+0(itmp1)
531         lwz     a4,offvmargdata+4(itmp1)
532         b       L_register_copy
533 #endif
534 L_handle_a4_a5:
535         lwz     a4,offvmargdata+0(itmp1)
536         lwz     a5,offvmargdata+4(itmp1)
537         b       L_register_copy
538 #if defined(__DARWIN__)
539 L_handle_a5_a6:
540         lwz     a5,offvmargdata+0(itmp1)
541         lwz     a6,offvmargdata+4(itmp1)
542         b       L_register_copy
543 #endif
544 L_handle_a6_a7:
545         lwz     a6,offvmargdata+0(itmp1)
546         lwz     a7,offvmargdata+4(itmp1)
547         b       L_register_copy
548
549
550         .data
551         .align  2
552
553 L_jumptable_float:
554         .long   L_handle_fa0
555         .long   L_handle_fa1
556         .long   L_handle_fa2
557         .long   L_handle_fa3
558         .long   L_handle_fa4
559         .long   L_handle_fa5
560         .long   L_handle_fa6
561         .long   L_handle_fa7
562
563 #if defined(__DARWIN__)
564         .long   L_handle_fa8
565         .long   L_handle_fa9
566         .long   L_handle_fa10
567         .long   L_handle_fa11
568         .long   L_handle_fa12
569 #endif
570
571         .text
572         .align  2
573
574 L_handle_fa0:
575         lfs     fa0,offvmargdata(itmp1)
576         b       L_register_copy
577 L_handle_fa1:
578         lfs     fa1,offvmargdata(itmp1)
579         b       L_register_copy
580 L_handle_fa2:
581         lfs     fa2,offvmargdata(itmp1)
582         b       L_register_copy
583 L_handle_fa3:
584         lfs     fa3,offvmargdata(itmp1)
585         b       L_register_copy
586 L_handle_fa4:
587         lfs     fa4,offvmargdata(itmp1)
588         b       L_register_copy
589 L_handle_fa5:
590         lfs     fa5,offvmargdata(itmp1)
591         b       L_register_copy
592 L_handle_fa6:
593         lfs     fa6,offvmargdata(itmp1)
594         b       L_register_copy
595 L_handle_fa7:
596         lfs     fa7,offvmargdata(itmp1)
597         b       L_register_copy
598
599 #if defined(__DARWIN__)
600 L_handle_fa8:
601         lfs     fa8,offvmargdata(itmp1)
602         b       L_register_copy
603 L_handle_fa9:
604         lfs     fa9,offvmargdata(itmp1)
605         b       L_register_copy
606 L_handle_fa10:
607         lfs     fa10,offvmargdata(itmp1)
608         b       L_register_copy
609 L_handle_fa11:
610         lfs     fa11,offvmargdata(itmp1)
611         b       L_register_copy
612 L_handle_fa12:
613         lfs     fa12,offvmargdata(itmp1)
614         b       L_register_copy
615 #endif
616
617
618         .data
619         .align  2
620
621 L_jumptable_double:
622         .long   L_handle_fda0
623         .long   L_handle_fda1
624         .long   L_handle_fda2
625         .long   L_handle_fda3
626         .long   L_handle_fda4
627         .long   L_handle_fda5
628         .long   L_handle_fda6
629         .long   L_handle_fda7
630
631 #if defined(__DARWIN__)
632         .long   L_handle_fda8
633         .long   L_handle_fda9
634         .long   L_handle_fda10
635         .long   L_handle_fda11
636         .long   L_handle_fda12
637 #endif
638
639         .text
640         .align  2
641
642 L_handle_fda0:
643         lfd     fa0,offvmargdata(itmp1)
644         b       L_register_copy
645 L_handle_fda1:
646         lfd     fa1,offvmargdata(itmp1)
647         b       L_register_copy
648 L_handle_fda2:
649         lfd     fa2,offvmargdata(itmp1)
650         b       L_register_copy
651 L_handle_fda3:
652         lfd     fa3,offvmargdata(itmp1)
653         b       L_register_copy
654 L_handle_fda4:
655         lfd     fa4,offvmargdata(itmp1)
656         b       L_register_copy
657 L_handle_fda5:
658         lfd     fa5,offvmargdata(itmp1)
659         b       L_register_copy
660 L_handle_fda6:
661         lfd     fa6,offvmargdata(itmp1)
662         b       L_register_copy
663 L_handle_fda7:
664         lfd     fa7,offvmargdata(itmp1)
665         b       L_register_copy
666
667 #if defined(__DARWIN__)
668 L_handle_fda8:
669         lfd     fa8,offvmargdata(itmp1)
670         b       L_register_copy
671 L_handle_fda9:
672         lfd     fa9,offvmargdata(itmp1)
673         b       L_register_copy
674 L_handle_fda10:
675         lfd     fa10,offvmargdata(itmp1)
676         b       L_register_copy
677 L_handle_fda11:
678         lfd     fa11,offvmargdata(itmp1)
679         b       L_register_copy
680 L_handle_fda12:
681         lfd     fa12,offvmargdata(itmp1)
682         b       L_register_copy
683 #endif
684
685
686 /* asm_call_jit_compiler *******************************************************
687
688    Invokes the compiler for untranslated JavaVM methods.
689
690 *******************************************************************************/
691
692 asm_call_jit_compiler:
693 L_asm_call_jit_compiler:                /* required for PIC code              */
694         mflr    r0
695         stw     r0,LA_LR_OFFSET(sp)         /* save return address                */
696         stwu    sp,-(LA_SIZE + 4*4 + INT_ARG_CNT*4 + FLT_ARG_CNT*8)(sp)
697
698 #if defined(__DARWIN__)
699         stw     a0,LA_SIZE+(4+0)*4(sp)
700         stw     a1,LA_SIZE+(4+1)*4(sp)
701         stw     a2,LA_SIZE+(4+2)*4(sp)
702         stw     a3,LA_SIZE+(4+3)*4(sp)
703         stw     a4,LA_SIZE+(4+4)*4(sp)
704         stw     a5,LA_SIZE+(4+5)*4(sp)
705         stw     a6,LA_SIZE+(4+6)*4(sp)
706         stw     a7,LA_SIZE+(4+7)*4(sp)
707
708         stfd    fa0,LA_SIZE+(4+8)*4(sp)
709         stfd    fa1,LA_SIZE+(4+10)*4(sp)
710         stfd    fa2,LA_SIZE+(4+12)*4(sp)
711         stfd    fa3,LA_SIZE+(4+14)*4(sp)
712         stfd    fa4,LA_SIZE+(4+16)*4(sp)
713         stfd    fa5,LA_SIZE+(4+18)*4(sp)
714         stfd    fa6,LA_SIZE+(4+20)*4(sp)
715         stfd    fa7,LA_SIZE+(4+22)*4(sp)
716         stfd    fa8,LA_SIZE+(4+24)*4(sp)
717         stfd    fa9,LA_SIZE+(4+26)*4(sp)
718         stfd    fa10,LA_SIZE+(4+28)*4(sp)
719         stfd    fa11,LA_SIZE+(4+30)*4(sp)
720         stfd    fa12,LA_SIZE+(4+32)*4(sp)
721 #else
722         SAVE_ARGUMENT_REGISTERS(LA_SIZE_IN_POINTERS)
723 #endif
724
725         mr      a0,itmp1
726         mr      a1,mptr
727         addi    a2,sp,(LA_SIZE + 4*4 + INT_ARG_CNT*4 + FLT_ARG_CNT*8)
728         lwz     a3,(LA_SIZE + 4*4 + INT_ARG_CNT*4 + FLT_ARG_CNT*8)+LA_LR_OFFSET(sp)
729         bl      jit_asm_compile
730         mr      pv,v0                       /* move address to pv register        */
731
732 #if defined(__DARWIN__)
733         lwz     a0,LA_SIZE+(4+0)*4(sp)
734         lwz     a1,LA_SIZE+(4+1)*4(sp)
735         lwz     a2,LA_SIZE+(4+2)*4(sp)
736         lwz     a3,LA_SIZE+(4+3)*4(sp)
737         lwz     a4,LA_SIZE+(4+4)*4(sp)
738         lwz     a5,LA_SIZE+(4+5)*4(sp)
739         lwz     a6,LA_SIZE+(4+6)*4(sp)
740         lwz     a7,LA_SIZE+(4+7)*4(sp)
741
742         lfd     fa0,LA_SIZE+(4+8)*4(sp)
743         lfd     fa1,LA_SIZE+(4+10)*4(sp)
744         lfd     fa2,LA_SIZE+(4+12)*4(sp)
745         lfd     fa3,LA_SIZE+(4+14)*4(sp)
746         lfd     fa4,LA_SIZE+(4+16)*4(sp)
747         lfd     fa5,LA_SIZE+(4+18)*4(sp)
748         lfd     fa6,LA_SIZE+(4+20)*4(sp)
749         lfd     fa7,LA_SIZE+(4+22)*4(sp)
750         lfd     fa8,LA_SIZE+(4+24)*4(sp)
751         lfd     fa9,LA_SIZE+(4+26)*4(sp)
752         lfd     fa10,LA_SIZE+(4+28)*4(sp)
753         lfd     fa11,LA_SIZE+(4+30)*4(sp)
754         lfd     fa12,LA_SIZE+(4+32)*4(sp)
755 #else
756         RESTORE_ARGUMENT_REGISTERS(LA_SIZE_IN_POINTERS)
757 #endif
758
759         lwz     itmp1,(LA_SIZE + 4*4 + INT_ARG_CNT*4 + FLT_ARG_CNT*8)+LA_LR_OFFSET(sp)
760         mtlr    itmp1
761
762         addi    sp,sp,(LA_SIZE + 4*4 + INT_ARG_CNT*4 + FLT_ARG_CNT*8)
763
764         mr.     pv,pv                       /* test for exception                 */
765         beq     L_asm_call_jit_compiler_exception
766
767         mtctr   pv                          /* move method address to control reg */
768         bctr                                /* and call the Java method           */
769
770 L_asm_call_jit_compiler_exception:
771         mflr    r0
772         stw     r0,LA_LR_OFFSET(sp)
773         stwu    sp,-LA_SIZE_ALIGNED(sp)     /* preserve linkage area              */
774         bl      exceptions_get_and_clear_exception
775         lwz     xpc,LA_SIZE_ALIGNED+LA_LR_OFFSET(sp)
776         mtlr    xpc     
777         addi    sp,sp,LA_SIZE_ALIGNED
778
779         mr      xptr,v0                     /* get exception                      */
780         addi    xpc,xpc,-4                  /* exception address is ra - 4        */
781         b       L_asm_handle_nat_exception
782
783
784 /********************* function asm_handle_exception ***************************
785 *                                                                              *
786 *   This function handles an exception. It does not use the usual calling      *
787 *   conventions. The exception pointer is passed in REG_ITMP1 and the          *
788 *   pc from the exception raising position is passed in REG_ITMP2. It searches *
789 *   the local exception table for a handler. If no one is found, it unwinds    *
790 *   stacks and continues searching the callers.                                *
791 *                                                                              *
792 *   void asm_handle_exception (exceptionptr, exceptionpc);                     *
793 *                                                                              *
794 *******************************************************************************/
795                 
796 asm_handle_nat_exception:
797 L_asm_handle_nat_exception:             /* required for PIC code              */
798 L_asm_handle_exception_stack_loop:
799         mflr    r0
800         addi    sp,sp,-(LA_SIZE+((4+6)*4))  /* allocate stack (+4 for darwin)     */
801         stw     xptr,LA_SIZE+(4+0)*4(sp)    /* save exception pointer             */
802         stw     xpc,LA_SIZE+(4+1)*4(sp)     /* save exception pc                  */
803         stw     r0,LA_SIZE+(4+3)*4(sp)      /* save return address                */
804         li      itmp3,0
805         stw     itmp3,LA_SIZE+(4+4)*4(sp)   /* save maybe-leaf flag (cleared)     */
806
807         mr      a0,r0                       /* pass return address                */
808         bl      md_codegen_get_pv_from_pc   /* get PV from RA                     */
809         stw     v0,LA_SIZE+(4+2)*4(sp)      /* save data segment pointer          */
810
811         lwz     a0,LA_SIZE+(4+0)*4(sp)      /* pass xptr                          */
812         lwz     a1,LA_SIZE+(4+1)*4(sp)      /* pass xpc                           */
813         lwz     a2,LA_SIZE+(4+2)*4(sp)      /* pass PV (v0 == a0)                 */
814         addi    a3,sp,LA_SIZE+((4+6)*4)     /* pass Java SP                       */
815
816         b       L_asm_handle_exception_continue
817
818 asm_handle_exception:
819 L_asm_handle_exception:                 /* required for PIC code              */
820         addi    sp,sp,-(ARG_CNT+TMP_CNT)*8  /* create maybe-leaf stackframe       */
821
822 #if defined(__DARWIN__)
823 #else
824         SAVE_ARGUMENT_REGISTERS(0)          /* we save arg and temp registers in  */
825         SAVE_TEMPORARY_REGISTERS(ARG_CNT)   /* case this is a leaf method         */
826 #endif
827
828         addi    sp,sp,-(LA_SIZE+(4+6)*4)    /* allocate stack                     */
829         stw     xptr,LA_SIZE+(4+0)*4(sp)    /* save xptr                          */
830         stw     pv,LA_SIZE+(4+2)*4(sp)      /* save PV                            */
831         mflr    r0                          /* save RA                            */
832         stw     r0,LA_SIZE+(4+3)*4(sp)
833         li      t0,1                        /* set maybe-leaf flag                */
834         stw     t0,LA_SIZE+(4+4)*4(sp)      /* save maybe-leaf flag               */
835
836         mr      a0,xptr                     /* pass exception pointer             */
837         mr      a1,xpc                      /* pass exception pc                  */
838         mr      a2,pv                       /* pass data segment pointer          */
839         addi    a3,sp,LA_SIZE+(ARG_CNT+TMP_CNT)*8+(4+6)*4
840
841 L_asm_handle_exception_continue:
842         bl      exceptions_handle_exception
843
844         mr.     v0,v0
845         beq     L_asm_handle_exception_not_catched
846
847         mr      xpc,v0                      /* move handlerpc into xpc            */
848         lwz     xptr,LA_SIZE+(4+0)*4(sp)    /* restore xptr                       */
849         lwz     pv,LA_SIZE+(4+2)*4(sp)      /* restore PV                         */
850         lwz     r0,LA_SIZE+(4+3)*4(sp)      /* restore RA                         */
851         mtlr    r0
852         lwz     t0,LA_SIZE+(4+4)*4(sp)      /* get maybe-leaf flag                */
853         addi    sp,sp,LA_SIZE+(4+6)*4       /* free stack frame                   */
854
855         mr.     t0,t0
856         beq     L_asm_handle_exception_no_leaf
857
858 #if defined(__DARWIN__)
859 #else
860         RESTORE_ARGUMENT_REGISTERS(0)       /* if this is a leaf method, we have  */
861         RESTORE_TEMPORARY_REGISTERS(ARG_CNT)/* to restore arg and temp registers  */
862 #endif
863
864         addi    sp,sp,(ARG_CNT+TMP_CNT)*8   /* remove maybe-leaf stackframe       */
865
866 L_asm_handle_exception_no_leaf:
867         mtctr   xpc                         /* jump to the handler                */
868         bctr
869
870 L_asm_handle_exception_not_catched:
871         lwz     xptr,LA_SIZE+(4+0)*4(sp)    /* restore xptr                       */
872         lwz     pv,LA_SIZE+(4+2)*4(sp)      /* restore PV                         */
873         lwz     r0,LA_SIZE+(4+3)*4(sp)      /* restore RA                         */
874         mtlr    r0
875         lwz     t0,LA_SIZE+(4+4)*4(sp)      /* get maybe-leaf flag                */
876         addi    sp,sp,LA_SIZE+(4+6)*4       /* free stack frame                   */
877
878         mr.     t0,t0
879         beq     L_asm_handle_exception_no_leaf_stack
880
881         addi    sp,sp,(ARG_CNT+TMP_CNT)*8   /* remove maybe-leaf stackframe       */
882         li      t0,0                        /* clear the maybe-leaf flag          */
883
884 L_asm_handle_exception_no_leaf_stack:
885         lwz     t1,FrameSize(pv)            /* get frame size                     */
886         add     t1,sp,t1                    /* pointer to save area               */
887
888         lwz     t2,IsLeaf(pv)               /* is leaf procedure                  */
889         mr.     t2,t2
890         bne     L_asm_handle_exception_no_ra_restore
891
892         lwz     r0,LA_LR_OFFSET(t1)         /* restore ra                         */
893         mtlr    r0
894
895 L_asm_handle_exception_no_ra_restore:
896         mflr    xpc                         /* the new xpc is ra                  */
897         mr      t4,xpc                      /* save RA                            */
898         lwz     t2,IntSave(pv)              /* t2 = saved int register count      */
899         bl      ex_int1
900 ex_int1:
901         mflr    t3                          /* t3 = current pc                    */
902 #if defined(__DARWIN__)
903         addi    t3,t3,lo16(ex_int2-ex_int1)
904 #else
905         addi    t3,t3,(ex_int2-ex_int1)@l
906 #endif
907         slwi    t2,t2,2                     /* t2 = register count * 4            */
908         subf    t3,t2,t3                    /* t3 = IntSave - t2                  */
909         mtctr   t3
910         bctr
911
912         lwz     s0,-10*4(t1)
913         lwz     s1,-9*4(t1)
914         lwz     s2,-8*4(t1)
915         lwz     s3,-7*4(t1)
916         lwz     s4,-6*4(t1)
917         lwz     s5,-5*4(t1)
918         lwz     s6,-4*4(t1)
919         lwz     s7,-3*4(t1)
920         lwz     s8,-2*4(t1)
921         lwz     s9,-1*4(t1)
922
923 ex_int2:
924         subf    t1,t2,t1                    /* t1 = t1 - register count * 4       */
925
926         lwz     t2,FltSave(pv)
927         bl      ex_flt1
928 ex_flt1:
929         mflr    t3
930 #if defined(__DARWIN__)
931         addi    t3,t3,lo16(ex_flt2-ex_flt1)
932 #else
933         addi    t3,t3,(ex_flt2-ex_flt1)@l
934 #endif
935         slwi    t2,t2,2                     /* t2 = register count * 4            */
936         subf    t3,t2,t3                    /* t3 = FltSave - t2                  */
937         mtctr   t3
938         bctr
939
940         lfd     fs0,-10*8(t1)
941         lfd     fs1,-9*8(t1)
942         lfd     fs2,-8*8(t1)
943         lfd     fs3,-7*8(t1)
944         lfd     fs4,-6*8(t1)
945         lfd     fs5,-5*8(t1)
946         lfd     fs6,-4*8(t1)
947         lfd     fs7,-3*8(t1)
948         lfd     fs8,-2*8(t1)
949         lfd     fs9,-1*8(t1)
950
951 ex_flt2:
952         mtlr    t4                          /* restore RA                         */
953         lwz     t1,FrameSize(pv)            /* get frame size                     */
954         add     sp,sp,t1                    /* unwind stack                       */
955         b       L_asm_handle_exception_stack_loop
956
957
958 /* asm_abstractmethoderror *****************************************************
959
960    Creates and throws an AbstractMethodError.
961
962 *******************************************************************************/
963
964 asm_abstractmethoderror:
965         mflr    r0
966         stw     r0,LA_LR_OFFSET(sp)
967         stwu    sp,-LA_SIZE_ALIGNED(sp)     /* preserve linkage area              */
968         addi    a0,sp,LA_SIZE_ALIGNED       /* pass java sp                       */
969         mr      a1,r0                       /* pass exception address             */
970         bl      exceptions_asm_new_abstractmethoderror
971         lwz     r0,LA_SIZE_ALIGNED+LA_LR_OFFSET(sp)
972         mtlr    r0                          /* restore return address             */
973         addi    sp,sp,LA_SIZE_ALIGNED
974
975         mr      xptr,v0                     /* get exception pointer              */
976         mr      xpc,r0                      /* we can't use r0 directly in addi   */
977         addi    xpc,xpc,-4                  /* exception address is ra - 4        */
978         b       L_asm_handle_nat_exception
979
980
981 /* asm_patcher_wrapper *********************************************************
982
983    XXX
984
985    Stack layout:
986      20   return address into JIT code (patch position)
987      16   pointer to virtual java_objectheader
988      12   machine code (which is patched back later)
989       8   unresolved class/method/field reference
990       4   data segment displacement from load instructions
991       0   patcher function pointer to call (pv is saved here afterwards)
992
993 *******************************************************************************/
994
995 asm_patcher_wrapper:
996         mflr    r0                    /* get Java return address (leaf)           */
997         stw     r0,6*4(sp)            /* store it in the stub stackframe          */
998                                       /* keep stack 16-bytes aligned: 6+1+37 = 44 */
999         stwu    sp,-(LA_SIZE+(5+58)*4)(sp)
1000
1001 #if defined(__DARWIN__)
1002         stw     a0,LA_SIZE+(5+0)*4(sp)      /* save argument registers            */
1003         stw     a1,LA_SIZE+(5+1)*4(sp)      /* preserve linkage area (24 bytes)   */
1004         stw     a2,LA_SIZE+(5+2)*4(sp)      /* and 4 bytes for 4 argument         */
1005         stw     a3,LA_SIZE+(5+3)*4(sp)
1006         stw     a4,LA_SIZE+(5+4)*4(sp)
1007         stw     a5,LA_SIZE+(5+5)*4(sp)
1008         stw     a6,LA_SIZE+(5+6)*4(sp)
1009         stw     a7,LA_SIZE+(5+7)*4(sp)
1010
1011         stfd    fa0,LA_SIZE+(5+8)*4(sp)
1012         stfd    fa1,LA_SIZE+(5+10)*4(sp)
1013         stfd    fa2,LA_SIZE+(5+12)*4(sp)
1014         stfd    fa3,LA_SIZE+(5+14)*4(sp)
1015         stfd    fa4,LA_SIZE+(5+16)*4(sp)
1016         stfd    fa5,LA_SIZE+(5+18)*4(sp)
1017         stfd    fa6,LA_SIZE+(5+20)*4(sp)
1018         stfd    fa7,LA_SIZE+(5+22)*4(sp)
1019         stfd    fa8,LA_SIZE+(5+24)*4(sp)
1020         stfd    fa9,LA_SIZE+(5+26)*4(sp)
1021         stfd    fa10,LA_SIZE+(5+28)*4(sp)
1022         stfd    fa11,LA_SIZE+(5+30)*4(sp)
1023         stfd    fa12,LA_SIZE+(5+32)*4(sp)
1024
1025         stw     t0,LA_SIZE+(5+33)*4(sp)
1026         stw     t1,LA_SIZE+(5+34)*4(sp)
1027         stw     t2,LA_SIZE+(5+35)*4(sp)
1028         stw     t3,LA_SIZE+(5+36)*4(sp)
1029         stw     t4,LA_SIZE+(5+37)*4(sp)
1030         stw     t5,LA_SIZE+(5+38)*4(sp)
1031         stw     t6,LA_SIZE+(5+39)*4(sp)
1032         stw     t7,LA_SIZE+(5+40)*4(sp)
1033
1034         stfd    ft0,LA_SIZE+(5+42)*4(sp)
1035         stfd    ft1,LA_SIZE+(5+44)*4(sp)
1036         stfd    ft2,LA_SIZE+(5+46)*4(sp)
1037         stfd    ft3,LA_SIZE+(5+48)*4(sp)
1038         stfd    ft4,LA_SIZE+(5+50)*4(sp)
1039         stfd    ft5,LA_SIZE+(5+52)*4(sp)
1040 #else
1041         /* save 8 int/8 float arguments */
1042         SAVE_ARGUMENT_REGISTERS(LA_SIZE_IN_POINTERS+1)
1043         SAVE_TEMPORARY_REGISTERS(LA_SIZE_IN_POINTERS+1+24)
1044 #endif
1045
1046         stw     itmp1,LA_SIZE+(5+54)*4(sp)
1047         stw     itmp2,LA_SIZE+(5+55)*4(sp)
1048         stw     pv,LA_SIZE+(5+56)*4(sp)
1049
1050         addi    a0,sp,LA_SIZE+(5+58)*4      /* pass SP of patcher stub            */
1051         mr      a1,pv                       /* pass PV                            */
1052         mr      a2,r0                       /* pass RA (correct for leafs)        */
1053         bl      patcher_wrapper
1054         stw     v0,LA_SIZE+(5+57)*4(sp)     /* save return value                  */
1055
1056 #if defined(__DARWIN__)
1057         lwz     a0,LA_SIZE+(5+0)*4(sp)
1058         lwz     a1,LA_SIZE+(5+1)*4(sp)
1059         lwz     a2,LA_SIZE+(5+2)*4(sp)
1060         lwz     a3,LA_SIZE+(5+3)*4(sp)
1061         lwz     a4,LA_SIZE+(5+4)*4(sp)
1062         lwz     a5,LA_SIZE+(5+5)*4(sp)
1063         lwz     a6,LA_SIZE+(5+6)*4(sp)
1064         lwz     a7,LA_SIZE+(5+7)*4(sp)
1065
1066         lfd     fa0,LA_SIZE+(5+8)*4(sp)
1067         lfd     fa1,LA_SIZE+(5+10)*4(sp)
1068         lfd     fa2,LA_SIZE+(5+12)*4(sp)
1069         lfd     fa3,LA_SIZE+(5+14)*4(sp)
1070         lfd     fa4,LA_SIZE+(5+16)*4(sp)
1071         lfd     fa5,LA_SIZE+(5+18)*4(sp)
1072         lfd     fa6,LA_SIZE+(5+20)*4(sp)
1073         lfd     fa7,LA_SIZE+(5+22)*4(sp)
1074         lfd     fa8,LA_SIZE+(5+24)*4(sp)
1075         lfd     fa9,LA_SIZE+(5+26)*4(sp)
1076         lfd     fa10,LA_SIZE+(5+28)*4(sp)
1077         lfd     fa11,LA_SIZE+(5+30)*4(sp)
1078         lfd     fa12,LA_SIZE+(5+32)*4(sp)
1079
1080         lwz     t0,LA_SIZE+(5+33)*4(sp)
1081         lwz     t1,LA_SIZE+(5+34)*4(sp)
1082         lwz     t2,LA_SIZE+(5+35)*4(sp)
1083         lwz     t3,LA_SIZE+(5+36)*4(sp)
1084         lwz     t4,LA_SIZE+(5+37)*4(sp)
1085         lwz     t5,LA_SIZE+(5+38)*4(sp)
1086         lwz     t6,LA_SIZE+(5+39)*4(sp)
1087         lwz     t7,LA_SIZE+(5+40)*4(sp)
1088
1089         lfd     ft0,LA_SIZE+(5+42)*4(sp)
1090         lfd     ft1,LA_SIZE+(5+44)*4(sp)
1091         lfd     ft2,LA_SIZE+(5+46)*4(sp)
1092         lfd     ft3,LA_SIZE+(5+48)*4(sp)
1093         lfd     ft4,LA_SIZE+(5+50)*4(sp)
1094         lfd     ft5,LA_SIZE+(5+52)*4(sp)
1095 #else
1096         /* restore 8 int/8 float arguments */
1097         RESTORE_ARGUMENT_REGISTERS(LA_SIZE_IN_POINTERS+1)
1098         RESTORE_TEMPORARY_REGISTERS(LA_SIZE_IN_POINTERS+1+24)
1099 #endif
1100
1101         lwz     itmp1,LA_SIZE+(5+54)*4(sp)
1102         lwz     itmp2,LA_SIZE+(5+55)*4(sp)
1103         lwz     pv,LA_SIZE+(5+56)*4(sp)
1104         lwz     itmp3,LA_SIZE+(5+57)*4(sp)  /* restore return value into temp reg.*/
1105
1106         lwz     r0,6*4+LA_SIZE+(5+58)*4(sp) /* restore RA                         */
1107         mtlr    r0
1108
1109         mr.     itmp3,itmp3           /* check for an exception                   */
1110         bne     L_asm_patcher_wrapper_exception
1111
1112                                       /* get return address (into JIT code)       */
1113         lwz     itmp3,5*4+LA_SIZE+(5+58)*4(sp)
1114
1115                                       /* remove stack frame + patcher stub stack  */
1116         addi    sp,sp,8*4+LA_SIZE+(5+58)*4
1117
1118         mtctr   itmp3
1119         bctr                          /* jump to new patched code                 */
1120
1121 L_asm_patcher_wrapper_exception:
1122         mr      xptr,itmp3                  /* get exception                      */
1123         lwz     xpc,5*4+LA_SIZE+(5+58)*4(sp)
1124         addi    sp,sp,8*4+LA_SIZE+(5+58)*4
1125         b       L_asm_handle_exception
1126
1127
1128 /* asm_replacement_out *********************************************************
1129
1130    This code is jumped to from the replacement-out stubs that are executed
1131    when a thread reaches an activated replacement point.
1132
1133    The purpose of asm_replacement_out is to read out the parts of the
1134    execution state that cannot be accessed from C code, store this state,
1135    and then call the C function replace_me.
1136
1137    Stack layout:
1138       16                start of stack inside method to replace
1139       0   rplpoint *    info on the replacement point that was reached
1140
1141    NOTE: itmp3 has been clobbered by the replacement-out stub!
1142
1143 *******************************************************************************/
1144
1145 /* some room to accomodate changes of the stack frame size during replacement */
1146         /* XXX we should find a cleaner solution here */
1147 #define REPLACEMENT_ROOM  512
1148
1149 #define sizeexecutionstate_ALIGNED  ((sizeexecutionstate + 15) & ~15)
1150
1151 asm_replacement_out:
1152     /* create stack frame */
1153         addi    sp,sp,-(sizeexecutionstate_ALIGNED + REPLACEMENT_ROOM)
1154
1155         /* save link register */
1156         mflr    itmp3
1157
1158         /* save registers in execution state */
1159         stw     r0 ,( 0*4+offes_intregs)(sp)
1160         stw     r1 ,( 1*4+offes_intregs)(sp)
1161         stw     r2 ,( 2*4+offes_intregs)(sp)
1162         stw     r3 ,( 3*4+offes_intregs)(sp)
1163         stw     r4 ,( 4*4+offes_intregs)(sp)
1164         stw     r5 ,( 5*4+offes_intregs)(sp)
1165         stw     r6 ,( 6*4+offes_intregs)(sp)
1166         stw     r7 ,( 7*4+offes_intregs)(sp)
1167         stw     r8 ,( 8*4+offes_intregs)(sp)
1168         stw     r9 ,( 9*4+offes_intregs)(sp)
1169         stw     r10,(10*4+offes_intregs)(sp)
1170         stw     r11,(11*4+offes_intregs)(sp)
1171         stw     r12,(12*4+offes_intregs)(sp)
1172         stw     r13,(13*4+offes_intregs)(sp)
1173         stw     r14,(14*4+offes_intregs)(sp)
1174         stw     r15,(15*4+offes_intregs)(sp)
1175         stw     r16,(16*4+offes_intregs)(sp) /* link register stored as itmp3 */
1176         stw     r17,(17*4+offes_intregs)(sp)
1177         stw     r18,(18*4+offes_intregs)(sp)
1178         stw     r19,(19*4+offes_intregs)(sp)
1179         stw     r20,(20*4+offes_intregs)(sp)
1180         stw     r21,(21*4+offes_intregs)(sp)
1181         stw     r22,(22*4+offes_intregs)(sp)
1182         stw     r23,(23*4+offes_intregs)(sp)
1183         stw     r24,(24*4+offes_intregs)(sp)
1184         stw     r25,(25*4+offes_intregs)(sp)
1185         stw     r26,(26*4+offes_intregs)(sp)
1186         stw     r27,(27*4+offes_intregs)(sp)
1187         stw     r28,(28*4+offes_intregs)(sp)
1188         stw     r29,(29*4+offes_intregs)(sp)
1189         stw     r30,(30*4+offes_intregs)(sp)
1190         stw     r31,(31*4+offes_intregs)(sp)
1191         
1192         stfd    fr0 ,( 0*8+offes_fltregs)(sp)
1193         stfd    fr1 ,( 1*8+offes_fltregs)(sp)
1194         stfd    fr2 ,( 2*8+offes_fltregs)(sp)
1195         stfd    fr3 ,( 3*8+offes_fltregs)(sp)
1196         stfd    fr4 ,( 4*8+offes_fltregs)(sp)
1197         stfd    fr5 ,( 5*8+offes_fltregs)(sp)
1198         stfd    fr6 ,( 6*8+offes_fltregs)(sp)
1199         stfd    fr7 ,( 7*8+offes_fltregs)(sp)
1200         stfd    fr8 ,( 8*8+offes_fltregs)(sp)
1201         stfd    fr9 ,( 9*8+offes_fltregs)(sp)
1202         stfd    fr10,(10*8+offes_fltregs)(sp)
1203         stfd    fr11,(11*8+offes_fltregs)(sp)
1204         stfd    fr12,(12*8+offes_fltregs)(sp)
1205         stfd    fr13,(13*8+offes_fltregs)(sp)
1206         stfd    fr14,(14*8+offes_fltregs)(sp)
1207         stfd    fr15,(15*8+offes_fltregs)(sp)
1208         stfd    fr16,(16*8+offes_fltregs)(sp)
1209         stfd    fr17,(17*8+offes_fltregs)(sp)
1210         stfd    fr18,(18*8+offes_fltregs)(sp)
1211         stfd    fr19,(19*8+offes_fltregs)(sp)
1212         stfd    fr20,(20*8+offes_fltregs)(sp)
1213         stfd    fr21,(21*8+offes_fltregs)(sp)
1214         stfd    fr22,(22*8+offes_fltregs)(sp)
1215         stfd    fr23,(23*8+offes_fltregs)(sp)
1216         stfd    fr24,(24*8+offes_fltregs)(sp)
1217         stfd    fr25,(25*8+offes_fltregs)(sp)
1218         stfd    fr26,(26*8+offes_fltregs)(sp)
1219         stfd    fr27,(27*8+offes_fltregs)(sp)
1220         stfd    fr28,(28*8+offes_fltregs)(sp)
1221         stfd    fr29,(29*8+offes_fltregs)(sp)
1222         stfd    fr30,(30*8+offes_fltregs)(sp)
1223         stfd    fr31,(31*8+offes_fltregs)(sp)
1224         
1225         /* calculate sp of method */
1226         addi    itmp1,sp,(sizeexecutionstate_ALIGNED + REPLACEMENT_ROOM + 4*4)
1227         stw     itmp1,(offes_sp)(sp)
1228
1229         /* store pv */
1230         stw     pv,(offes_pv)(sp)
1231
1232         /* call replace_me */
1233         lwz     a0,-(4*4)(itmp1)            /* arg0: rplpoint *                   */
1234         mr      a1,sp                       /* arg1: execution state              */
1235         addi    sp,sp,-(LA_SIZE_ALIGNED)
1236         b       replace_me                  /* call C function replace_me         */
1237
1238 /* asm_replacement_in **********************************************************
1239
1240    This code writes the given execution state and jumps to the replacement
1241    code.
1242
1243    This function never returns!
1244
1245    NOTE: itmp3 is not restored!
1246
1247    C prototype:
1248       void asm_replacement_in(executionstate *es, replace_safestack_t *st);
1249
1250 *******************************************************************************/
1251
1252 asm_replacement_in:
1253         /* a0 == executionstate *es      */
1254         /* a1 == replace_safestack_t *st */
1255
1256         /* get arguments */
1257         mr              s1,a1                       /* replace_safestack_t *st            */
1258         mr              s2,a0                       /* executionstate *es == safe stack   */
1259
1260         /* switch to the safe stack */
1261         mr              sp,s2
1262
1263         /* reserve linkage area */
1264         addi    sp,sp,-(LA_SIZE_ALIGNED)
1265
1266         /* call replace_build_execution_state(st) */
1267         mr              a0,s1
1268         bl              replace_build_execution_state
1269
1270         /* set new sp */
1271         lwz             sp,(offes_sp)(s2)
1272
1273         /* build stack frame */
1274         addi    sp,sp,-(sizeexecutionstate_ALIGNED)
1275
1276         /* call replace_free_safestack(st,& of allocated executionstate_t) */
1277         mr              a1,sp /* tmpes */
1278         mr              a0,s1 /* st    */
1279         addi    sp,sp,-(LA_SIZE_ALIGNED)  /* reserve linkage area */
1280         bl              replace_free_safestack
1281         addi    sp,sp,+(LA_SIZE_ALIGNED)  /* tear down linkage area */
1282
1283         /* set new pv */
1284         lwz     pv,(offes_pv)(sp)
1285         
1286         /* copy registers from execution state */
1287         lwz     r0 ,( 0*4+offes_intregs)(sp)
1288         /* r1 is sp                       */
1289         /* r2 is reserved                 */
1290         lwz     a0 ,( 3*4+offes_intregs)(sp)
1291         lwz     r4 ,( 4*4+offes_intregs)(sp)
1292         lwz     r5 ,( 5*4+offes_intregs)(sp)
1293         lwz     r6 ,( 6*4+offes_intregs)(sp)
1294         lwz     r7 ,( 7*4+offes_intregs)(sp)
1295         lwz     r8 ,( 8*4+offes_intregs)(sp)
1296         lwz     r9 ,( 9*4+offes_intregs)(sp)
1297         lwz     r10,(10*4+offes_intregs)(sp)
1298         lwz     r11,(11*4+offes_intregs)(sp)
1299         lwz     r12,(12*4+offes_intregs)(sp)
1300         /* r13 is pv                      */
1301         lwz     r14,(14*4+offes_intregs)(sp)
1302         lwz     r15,(15*4+offes_intregs)(sp)
1303         lwz     r16,(16*4+offes_intregs)(sp) /* itmp3, later to link register */
1304         lwz     r17,(17*4+offes_intregs)(sp)
1305         lwz     r18,(18*4+offes_intregs)(sp)
1306         lwz     r19,(19*4+offes_intregs)(sp)
1307         lwz     r20,(20*4+offes_intregs)(sp)
1308         lwz     r21,(21*4+offes_intregs)(sp)
1309         lwz     r22,(22*4+offes_intregs)(sp)
1310         lwz     r23,(23*4+offes_intregs)(sp)
1311         lwz     r24,(24*4+offes_intregs)(sp)
1312         lwz     r25,(25*4+offes_intregs)(sp)
1313         lwz     r26,(26*4+offes_intregs)(sp)
1314         lwz     r27,(27*4+offes_intregs)(sp)
1315         lwz     r28,(28*4+offes_intregs)(sp)
1316         lwz     r29,(29*4+offes_intregs)(sp)
1317         lwz     r30,(30*4+offes_intregs)(sp)
1318         lwz     r31,(31*4+offes_intregs)(sp)
1319         
1320         lfd     fr0 ,( 0*8+offes_fltregs)(sp)
1321         lfd     fr1 ,( 1*8+offes_fltregs)(sp)
1322         lfd     fr2 ,( 2*8+offes_fltregs)(sp)
1323         lfd     fr3 ,( 3*8+offes_fltregs)(sp)
1324         lfd     fr4 ,( 4*8+offes_fltregs)(sp)
1325         lfd     fr5 ,( 5*8+offes_fltregs)(sp)
1326         lfd     fr6 ,( 6*8+offes_fltregs)(sp)
1327         lfd     fr7 ,( 7*8+offes_fltregs)(sp)
1328         lfd     fr8 ,( 8*8+offes_fltregs)(sp)
1329         lfd     fr9 ,( 9*8+offes_fltregs)(sp)
1330         lfd     fr10,(10*8+offes_fltregs)(sp)
1331         lfd     fr11,(11*8+offes_fltregs)(sp)
1332         lfd     fr12,(12*8+offes_fltregs)(sp)
1333         lfd     fr13,(13*8+offes_fltregs)(sp)
1334         lfd     fr14,(14*8+offes_fltregs)(sp)
1335         lfd     fr15,(15*8+offes_fltregs)(sp)
1336         lfd     fr16,(16*8+offes_fltregs)(sp)
1337         lfd     fr17,(17*8+offes_fltregs)(sp)
1338         lfd     fr18,(18*8+offes_fltregs)(sp)
1339         lfd     fr19,(19*8+offes_fltregs)(sp)
1340         lfd     fr20,(20*8+offes_fltregs)(sp)
1341         lfd     fr21,(21*8+offes_fltregs)(sp)
1342         lfd     fr22,(22*8+offes_fltregs)(sp)
1343         lfd     fr23,(23*8+offes_fltregs)(sp)
1344         lfd     fr24,(24*8+offes_fltregs)(sp)
1345         lfd     fr25,(25*8+offes_fltregs)(sp)
1346         lfd     fr26,(26*8+offes_fltregs)(sp)
1347         lfd     fr27,(27*8+offes_fltregs)(sp)
1348         lfd     fr28,(28*8+offes_fltregs)(sp)
1349         lfd     fr29,(29*8+offes_fltregs)(sp)
1350         lfd     fr30,(30*8+offes_fltregs)(sp)
1351         lfd     fr31,(31*8+offes_fltregs)(sp)
1352
1353         /* restore link register */
1354
1355         mtlr    itmp3
1356         
1357         /* load new pc */
1358
1359         lwz     itmp3,offes_pc(sp)
1360
1361         /* remove stack frame */
1362
1363         addi    sp,sp,+(sizeexecutionstate_ALIGNED)
1364
1365         /* jump to new code */
1366
1367         mtctr   itmp3
1368         bctr
1369
1370 /*********************************************************************/
1371
1372 asm_cacheflush:
1373         add     a1,a0,a1
1374         rlwinm  a0,a0,0,0,26
1375         addi    a1,a1,31
1376         rlwinm  a1,a1,0,0,26
1377         mr      a2,a0
1378 1:
1379         cmplw   a0,a1
1380         bge     0f
1381         dcbst   0,a0
1382         addi    a0,a0,32
1383         b       1b
1384 0:
1385         sync
1386 1:
1387         cmplw   a2,a1
1388         bge     0f
1389         icbi    0,a2
1390         addi    a2,a2,32
1391         b       1b
1392 0:
1393         sync
1394         isync
1395         blr
1396
1397
1398 asm_getclassvalues_atomic:
1399 _crit_restart:
1400 _crit_begin:
1401         lwz     a3,offbaseval(a0)
1402         lwz     a4,offdiffval(a0)
1403         lwz     a5,offbaseval(a1)
1404 _crit_end:
1405         stw     a3,offcast_super_baseval(a2)
1406         stw     a4,offcast_super_diffval(a2)
1407         stw     a5,offcast_sub_baseval(a2)
1408         blr
1409
1410         .data
1411
1412 asm_criticalsections:
1413 #if defined(ENABLE_THREADS)
1414         .long   _crit_begin
1415         .long   _crit_end
1416         .long   _crit_restart
1417 #endif
1418         .long 0
1419
1420
1421 #if defined(__DARWIN__)
1422
1423 .section __TEXT,__picsymbolstub1,symbol_stubs,pure_instructions,32
1424         .align 2
1425 L_builtin_throw_exception$stub:
1426         .indirect_symbol _builtin_throw_exception
1427         mflr r0
1428         bcl 20,31,L00$_builtin_throw_exception
1429 L00$_builtin_throw_exception:
1430         mflr r11
1431         addis r11,r11,ha16(L_builtin_throw_exception$lazy_ptr - L00$_builtin_throw_exception)
1432         mtlr r0
1433         lwzu r12,lo16(L_builtin_throw_exception$lazy_ptr - L00$_builtin_throw_exception)(r11)
1434         mtctr r12
1435         bctr
1436 .data
1437 .lazy_symbol_pointer
1438 L_builtin_throw_exception$lazy_ptr:
1439         .indirect_symbol _builtin_throw_exception
1440         .long dyld_stub_binding_helper
1441
1442
1443 .section __TEXT,__picsymbolstub1,symbol_stubs,pure_instructions,32
1444         .align 2
1445 L_md_codegen_get_pv_from_pc$stub:
1446         .indirect_symbol _md_codegen_get_pv_from_pc
1447         mflr r0
1448         bcl 20,31,L00$_md_codegen_get_pv_from_pc
1449 L00$_md_codegen_get_pv_from_pc:
1450         mflr r11
1451         addis r11,r11,ha16(L_md_codegen_get_pv_from_pc$lazy_ptr - L00$_md_codegen_get_pv_from_pc)
1452         mtlr r0
1453         lwzu r12,lo16(L_md_codegen_get_pv_from_pc$lazy_ptr - L00$_md_codegen_get_pv_from_pc)(r11)
1454         mtctr r12
1455         bctr
1456 .data
1457 .lazy_symbol_pointer
1458 L_md_codegen_get_pv_from_pc$lazy_ptr:
1459         .indirect_symbol _md_codegen_get_pv_from_pc
1460         .long dyld_stub_binding_helper
1461
1462
1463 .section __TEXT,__picsymbolstub1,symbol_stubs,pure_instructions,32
1464         .align 2
1465 L_exceptions_handle_exception$stub:
1466         .indirect_symbol _exceptions_handle_exception
1467         mflr r0
1468         bcl 20,31,L00$_exceptions_handle_exception
1469 L00$_exceptions_handle_exception:
1470         mflr r11
1471         addis r11,r11,ha16(L_exceptions_handle_exception$lazy_ptr - L00$_exceptions_handle_exception)
1472         mtlr r0
1473         lwzu r12,lo16(L_exceptions_handle_exception$lazy_ptr - L00$_exceptions_handle_exception)(r11)
1474         mtctr r12
1475         bctr
1476 .data
1477 .lazy_symbol_pointer
1478 L_exceptions_handle_exception$lazy_ptr:
1479         .indirect_symbol _exceptions_handle_exception
1480         .long dyld_stub_binding_helper
1481
1482
1483 .section __TEXT,__picsymbolstub1,symbol_stubs,pure_instructions,32
1484         .align 2
1485 L_stacktrace_create_extern_stackframeinfo$stub:
1486         .indirect_symbol _stacktrace_create_extern_stackframeinfo
1487         mflr r0
1488         bcl 20,31,L00$_stacktrace_create_extern_stackframeinfo
1489 L00$_stacktrace_create_extern_stackframeinfo:
1490         mflr r11
1491         addis r11,r11,ha16(L_stacktrace_create_extern_stackframeinfo$lazy_ptr - L00$_stacktrace_create_extern_stackframeinfo)
1492         mtlr r0
1493         lwzu r12,lo16(L_stacktrace_create_extern_stackframeinfo$lazy_ptr - L00$_stacktrace_create_extern_stackframeinfo)(r11)
1494         mtctr r12
1495         bctr
1496 .data
1497 .lazy_symbol_pointer
1498 L_stacktrace_create_extern_stackframeinfo$lazy_ptr:
1499         .indirect_symbol _stacktrace_create_extern_stackframeinfo
1500         .long dyld_stub_binding_helper
1501
1502
1503 .section __TEXT,__picsymbolstub1,symbol_stubs,pure_instructions,32
1504         .align 2
1505 L_jit_asm_compile$stub:
1506         .indirect_symbol _jit_asm_compile
1507         mflr r0
1508         bcl 20,31,L00$_jit_asm_compile
1509 L00$_jit_asm_compile:
1510         mflr r11
1511         addis r11,r11,ha16(L_jit_asm_compile$lazy_ptr - L00$_jit_asm_compile)
1512         mtlr r0
1513         lwzu r12,lo16(L_jit_asm_compile$lazy_ptr - L00$_jit_asm_compile)(r11)
1514         mtctr r12
1515         bctr
1516 .data
1517 .lazy_symbol_pointer
1518 L_jit_asm_compile$lazy_ptr:
1519         .indirect_symbol _jit_asm_compile
1520         .long dyld_stub_binding_helper
1521
1522
1523 .section __TEXT,__picsymbolstub1,symbol_stubs,pure_instructions,32
1524         .align 2
1525 L_stacktrace_remove_stackframeinfo$stub:
1526         .indirect_symbol _stacktrace_remove_stackframeinfo
1527         mflr r0
1528         bcl 20,31,L00$_stacktrace_remove_stackframeinfo
1529 L00$_stacktrace_remove_stackframeinfo:
1530         mflr r11
1531         addis r11,r11,ha16(L_stacktrace_remove_stackframeinfo$lazy_ptr - L00$_stacktrace_remove_stackframeinfo)
1532         mtlr r0
1533         lwzu r12,lo16(L_stacktrace_remove_stackframeinfo$lazy_ptr - L00$_stacktrace_remove_stackframeinfo)(r11)
1534         mtctr r12
1535         bctr
1536 .data
1537 .lazy_symbol_pointer
1538 L_stacktrace_remove_stackframeinfo$lazy_ptr:
1539         .indirect_symbol _stacktrace_remove_stackframeinfo
1540         .long dyld_stub_binding_helper
1541
1542
1543 .section __TEXT,__picsymbolstub1,symbol_stubs,pure_instructions,32
1544         .align 2
1545 L_exceptions_get_and_clear_exception$stub:
1546         .indirect_symbol _exceptions_get_and_clear_exception
1547         mflr r0
1548         bcl 20,31,L00$_exceptions_get_and_clear_exception
1549 L00$_exceptions_get_and_clear_exception:
1550         mflr r11
1551         addis r11,r11,ha16(L_exceptions_get_and_clear_exception$lazy_ptr - L00$_exceptions_get_and_clear_exception)
1552         mtlr r0
1553         lwzu r12,lo16(L_exceptions_get_and_clear_exception$lazy_ptr - L00$_exceptions_get_and_clear_exception)(r11)
1554         mtctr r12
1555         bctr
1556 .data
1557 .lazy_symbol_pointer
1558 L_exceptions_get_and_clear_exception$lazy_ptr:
1559         .indirect_symbol _exceptions_get_and_clear_exception
1560         .long dyld_stub_binding_helper
1561
1562
1563 .section __TEXT,__picsymbolstub1,symbol_stubs,pure_instructions,32
1564         .align 2
1565 L_exceptions_asm_new_abstractmethoderror$stub:
1566         .indirect_symbol _exceptions_asm_new_abstractmethoderror
1567         mflr r0
1568         bcl 20,31,L00$_exceptions_asm_new_abstractmethoderror
1569 L00$_exceptions_asm_new_abstractmethoderror:
1570         mflr r11
1571         addis r11,r11,ha16(L_exceptions_asm_new_abstractmethoderror$lazy_ptr - L00$_exceptions_asm_new_abstractmethoderror)
1572         mtlr r0
1573         lwzu r12,lo16(L_exceptions_asm_new_abstractmethoderror$lazy_ptr - L00$_exceptions_asm_new_abstractmethoderror)(r11)
1574         mtctr r12
1575         bctr
1576 .data
1577 .lazy_symbol_pointer
1578 L_exceptions_asm_new_abstractmethoderror$lazy_ptr:
1579         .indirect_symbol _exceptions_asm_new_abstractmethoderror
1580         .long dyld_stub_binding_helper
1581
1582
1583 .section __TEXT,__picsymbolstub1,symbol_stubs,pure_instructions,32
1584         .align 2
1585 L_patcher_wrapper$stub:
1586         .indirect_symbol _patcher_wrapper
1587         mflr r0
1588         bcl 20,31,L00$_patcher_wrapper
1589 L00$_patcher_wrapper:
1590         mflr r11
1591         addis r11,r11,ha16(L_patcher_wrapper$lazy_ptr - L00$_patcher_wrapper)
1592         mtlr r0
1593         lwzu r12,lo16(L_patcher_wrapper$lazy_ptr - L00$_patcher_wrapper)(r11)
1594         mtctr r12
1595         bctr
1596 .data
1597 .lazy_symbol_pointer
1598 L_patcher_wrapper$lazy_ptr:
1599         .indirect_symbol _patcher_wrapper
1600         .long dyld_stub_binding_helper
1601
1602
1603 .section __TEXT,__picsymbolstub1,symbol_stubs,pure_instructions,32
1604         .align 2
1605 L_replace_me$stub:
1606         .indirect_symbol _replace_me
1607         mflr r0
1608         bcl 20,31,L00$_replace_me
1609 L00$_replace_me:
1610         mflr r11
1611         addis r11,r11,ha16(L_replace_me$lazy_ptr - L00$_replace_me)
1612         mtlr r0
1613         lwzu r12,lo16(L_replace_me$lazy_ptr - L00$_replace_me)(r11)
1614         mtctr r12
1615         bctr
1616 .data
1617 .lazy_symbol_pointer
1618 L_replace_me$lazy_ptr:
1619         .indirect_symbol _replace_me
1620         .long dyld_stub_binding_helper
1621
1622
1623 .section __TEXT,__picsymbolstub1,symbol_stubs,pure_instructions,32
1624         .align 2
1625 L_replace_build_execution_state$stub:
1626         .indirect_symbol _replace_build_execution_state
1627         mflr r0
1628         bcl 20,31,L00$_replace_build_execution_state
1629 L00$_replace_build_execution_state:
1630         mflr r11
1631         addis r11,r11,ha16(L_replace_build_execution_state$lazy_ptr - L00$_replace_build_execution_state)
1632         mtlr r0
1633         lwzu r12,lo16(L_replace_build_execution_state$lazy_ptr - L00$_replace_build_execution_state)(r11)
1634         mtctr r12
1635         bctr
1636 .data
1637 .lazy_symbol_pointer
1638 L_replace_build_execution_state$lazy_ptr:
1639         .indirect_symbol _replace_build_execution_state
1640         .long dyld_stub_binding_helper
1641
1642
1643 .section __TEXT,__picsymbolstub1,symbol_stubs,pure_instructions,32
1644         .align 2
1645 L_replace_free_safestack$stub:
1646         .indirect_symbol _replace_free_safestack
1647         mflr r0
1648         bcl 20,31,L00$_replace_free_safestack
1649 L00$_replace_free_safestack:
1650         mflr r11
1651         addis r11,r11,ha16(L_replace_free_safestack$lazy_ptr - L00$_replace_free_safestack)
1652         mtlr r0
1653         lwzu r12,lo16(L_replace_free_safestack$lazy_ptr - L00$_replace_free_safestack)(r11)
1654         mtctr r12
1655         bctr
1656 .data
1657 .lazy_symbol_pointer
1658 L_replace_free_safestack$lazy_ptr:
1659         .indirect_symbol _replace_free_safestack
1660         .long dyld_stub_binding_helper
1661
1662 #endif /* defined(__DARWIN__) */
1663
1664
1665 /* Disable exec-stacks, required for Gentoo ***********************************/
1666
1667 #if defined(__GCC__) && defined(__ELF__)
1668         .section .note.GNU-stack,"",@progbits
1669 #endif
1670
1671
1672 /*
1673  * These are local overrides for various environment variables in Emacs.
1674  * Please do not remove this and leave it at the end of the file, where
1675  * Emacs will automagically detect them.
1676  * ---------------------------------------------------------------------
1677  * Local variables:
1678  * mode: asm
1679  * indent-tabs-mode: t
1680  * c-basic-offset: 4
1681  * tab-width: 4
1682  * End:
1683  * vim:noexpandtab:sw=4:ts=4:
1684  */