1 /* src/vm/jit/mips/asmpart.S - Java-C interface functions for MIPS
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
8 This file is part of CACAO.
10 This program is free software; 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.
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.
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
25 Contact: cacao@cacaojvm.org
27 Authors: Andreas Krall
29 Changes: Christian Thalinger
32 $Id: asmpart.S 4921 2006-05-15 14:24:36Z twisti $
39 #include "vm/jit/mips/md-abi.h"
40 #include "vm/jit/mips/md-asm.h"
41 #include "vm/jit/mips/offsets.h"
43 #include "vm/jit/abi-asm.h"
44 #include "vm/jit/methodheader.h"
51 /* export functions ***********************************************************/
53 .globl asm_vm_call_method
54 .globl asm_vm_call_method_int
55 .globl asm_vm_call_method_long
56 .globl asm_vm_call_method_float
57 .globl asm_vm_call_method_double
58 .globl asm_vm_call_method_exception_handler
60 .globl asm_call_jit_compiler
61 .globl asm_handle_exception
62 .globl asm_handle_nat_exception
64 .globl asm_wrapper_patcher
66 .globl asm_replacement_out
67 .globl asm_replacement_in
69 .globl asm_perform_threadswitch
70 .globl asm_initialize_thread_stack
71 .globl asm_switchstackandcall
72 .globl asm_getclassvalues_atomic
73 .globl asm_criticalsections
75 .globl compare_and_swap
78 /********************* function asm_calljavafunction ***************************
80 * This function calls a Java-method (which possibly needs compilation) *
81 * with up to 4 address parameters. *
83 * This functions calls the JIT-compiler which eventually translates the *
84 * method into machine code. *
86 * A possibly throwed exception will be returned to the caller as function *
87 * return value, so the java method cannot return a fucntion value (this *
88 * function usually calls 'main' and '<clinit>' which do not return a *
92 * javaobject_header *asm_calljavafunction (methodinfo *m, *
93 * void *arg1, void *arg2, void *arg3, void *arg4); *
95 *******************************************************************************/
97 .ent asm_vm_call_method
101 .dword 0 /* catch type all */
102 .dword 0 /* handler pc */
103 .dword 0 /* end pc */
104 .dword 0 /* start pc */
105 .word 1 /* extable size */
106 .word 0 /* 4-byte ALIGNMENT PADDING */
107 .dword 0 /* line number table start */
108 .dword 0 /* line number table size */
109 .word 0 /* 4-byte ALIGNMENT PADDING */
110 .word 0 /* fltsave */
111 .word 0 /* intsave */
114 .word 0 /* frame size */
115 .dword 0 /* method pointer (pointer to name) */
118 asm_vm_call_method_int:
119 asm_vm_call_method_long:
120 asm_vm_call_method_float:
121 asm_vm_call_method_double:
122 .set noreorder /* XXX we need to recompute pv */
124 aaddiu sp,sp,-12*8 /* allocate stack space (only 11 needed)*/
125 ast ra,0(sp) /* save return address */
127 bal L_asm_vm_call_method_compute_pv
128 ast pv,1*8(sp) /* procedure vector */
129 L_asm_vm_call_method_compute_pv:
133 sdc1 fss0,5*8(sp) /* save non JavaABI saved flt registers */
140 ast a0,4*8(sp) /* save method pointer for compiler */
144 blez s7,calljava_argsloaded
147 ald a0,offvmargdata(t0)
148 ldc1 fa0,offvmargdata(t0)
150 blez s7,calljava_argsloaded
153 ald a1,offvmargdata+sizevmarg*1(t0)
154 ldc1 fa1,offvmargdata+sizevmarg*1(t0)
156 blez s7,calljava_argsloaded
159 ald a2,offvmargdata+sizevmarg*2(t0)
160 ldc1 fa2,offvmargdata+sizevmarg*2(t0)
162 blez s7,calljava_argsloaded
165 ald a3,offvmargdata+sizevmarg*3(t0)
166 ldc1 fa3,offvmargdata+sizevmarg*3(t0)
168 blez s7,calljava_argsloaded
171 ald a4,offvmargdata+sizevmarg*4(t0)
172 ldc1 fa4,offvmargdata+sizevmarg*4(t0)
174 blez s7,calljava_argsloaded
177 ald a5,offvmargdata+sizevmarg*5(t0)
178 ldc1 fa5,offvmargdata+sizevmarg*5(t0)
180 blez s7,calljava_argsloaded
183 ald a6,offvmargdata+sizevmarg*6(t0)
184 ldc1 fa6,offvmargdata+sizevmarg*6(t0)
186 blez s7,calljava_argsloaded
189 ald a7,offvmargdata+sizevmarg*7(t0)
190 ldc1 fa7,offvmargdata+sizevmarg*7(t0)
194 move t8,sp /* save stack pointer */
195 blez s7,calljava_nocopy
203 ald t3,offvmargdata+sizevmarg*8(t0)
208 bnez t1,calljava_copyloop
212 ald itmp1,4*8(t8) /* pass method pointer via itmp1 */
214 ala mptr,asm_call_jit_compiler/* fake virtual function call (2 instr) */
215 ast mptr,2*8(t8) /* store function address */
216 ala mptr,1*8(t8) /* set method pointer */
218 ald pv,1*8(mptr) /* method call as in Java */
219 jalr pv /* call JIT compiler */
221 L_asm_vm_call_method_recompute_pv:
222 /* aaddiu pv,ra,(asm_vm_call_method - L_asm_vm_call_method_recompute_pv)*/
223 aaddiu pv,ra,-76*4 /* recompute procedure vector */
225 .set reorder /* XXX we need to recompute pv */
228 ald ra,0(sp) /* restore return address */
229 ald pv,8(sp) /* restore procedure vector */
232 ldc1 fss0,5*8(sp) /* restore non JavaABI saved flt regs */
239 aaddiu sp,sp,12*8 /* free stack space */
242 asm_vm_call_method_exception_handler:
246 jal builtin_throw_exception
249 .end asm_vm_call_method
252 /****************** function asm_call_jit_compiler *****************************
254 * invokes the compiler for untranslated JavaVM methods. *
256 * Register REG_ITEMP1 contains a pointer to the method info structure *
257 * (prepared by createcompilerstub). Using the return address in R31 and the *
258 * offset in the LDA instruction or using the value in methodptr R25 the *
259 * patching address for storing the method address can be computed: *
261 * method address was either loaded using *
262 * M_ALD (REG_PV, REG_PV, a) ; invokestatic/special ($28) *
263 * M_JSR (REG_RA, REG_PV); *
265 * M_LDA (REG_PV, REG_RA, val) *
267 * M_ALD (REG_PV, REG_METHODPTR, m) ; invokevirtual/interface ($25) *
268 * M_JSR (REG_RA, REG_PV); *
270 * in the static case the method pointer can be computed using the *
271 * return address and the lda function following the jmp instruction *
273 *******************************************************************************/
276 .ent asm_call_jit_compiler
278 asm_call_jit_compiler:
279 aaddiu sp,sp,-(ARG_CNT+2)*8 /* allocate stack space */
281 ast ra,0*8(sp) /* save return address */
283 SAVE_ARGUMENT_REGISTERS(1)
285 move a0,itmp1 /* pass methodinfo pointer */
286 move a1,mptr /* pass method pointer */
287 aaddiu a2,sp,(ARG_CNT+2)*8 /* pass java sp */
289 jal jit_asm_compile /* call jit compiler */
292 ald ra,0*8(sp) /* restore return address */
294 RESTORE_ARGUMENT_REGISTERS(1)
296 aaddiu sp,sp,(ARG_CNT+2)*8 /* remove stack frame */
298 beqz pv,L_asm_call_jit_compiler_exception
300 jr pv /* and call method. The method returns */
301 /* directly to the caller (ra). */
303 L_asm_call_jit_compiler_exception:
304 #if defined(ENABLE_THREADS)
307 jal builtin_asm_get_exceptionptrptr
313 ald xptr,0(v0) /* get the exception pointer */
314 ast zero,0(v0) /* clear the exception pointer */
316 aaddiu xpc,ra,-4 /* faulting address is return adress - 4 */
317 b asm_handle_nat_exception
319 .end asm_call_jit_compiler
322 /* asm_handle_exception ********************************************************
324 This function handles an exception. It does not use the usual calling
325 conventions. The exception pointer is passed in REG_ITMP1 and the
326 pc from the exception raising position is passed in REG_ITMP2. It searches
327 the local exception table for a handler. If no one is found, it unwinds
328 stacks and continues searching the callers.
330 *******************************************************************************/
332 .ent asm_handle_nat_exception
334 asm_handle_nat_exception:
335 L_asm_handle_exception_stack_loop:
336 aaddiu sp,sp,-6*8 /* allocate stack */
337 ast xptr,0*8(sp) /* save exception pointer */
338 ast xpc,1*8(sp) /* save exception pc */
339 ast ra,3*8(sp) /* save return address */
340 ast zero,4*8(sp) /* save maybe-leaf flag (cleared) */
342 move a0,ra /* pass return address */
343 jal md_codegen_findmethod /* get PV from RA */
344 ast v0,2*8(sp) /* save data segment pointer */
346 ald a0,0*8(sp) /* pass exception pointer */
347 ald a1,1*8(sp) /* pass exception pc */
348 move a2,v0 /* pass data segment pointer */
349 aaddiu a3,sp,6*8 /* pass Java stack pointer */
351 b L_asm_handle_exception_continue
353 .aent asm_handle_exception
355 asm_handle_exception:
356 aaddiu sp,sp,-(ARG_CNT+TMP_CNT)*8 /* create maybe-leaf stackframe */
358 SAVE_ARGUMENT_REGISTERS(0) /* we save arg and temp registers in */
359 SAVE_TEMPORARY_REGISTERS(ARG_CNT) /* case this is a leaf method */
361 aaddiu sp,sp,-6*8 /* allocate stack */
362 ast xptr,0*8(sp) /* save exception pointer */
363 ast xpc,1*8(sp) /* save exception pc */
364 ast pv,2*8(sp) /* save data segment pointer */
365 ast ra,3*8(sp) /* save return address */
366 addu t0,zero,1 /* set maybe-leaf flag */
367 ast t0,4*8(sp) /* save maybe-leaf flag */
369 move a0,xptr /* pass exception pointer */
370 move a1,xpc /* pass exception pc */
371 move a2,pv /* pass data segment pointer */
372 aaddiu a3,sp,(ARG_CNT+TMP_CNT+6)*8 /* pass Java stack pointer */
374 L_asm_handle_exception_continue:
375 jal exceptions_handle_exception
377 beqz v0,L_asm_handle_exception_not_catched
379 move xpc,v0 /* move handlerpc into xpc */
380 ald xptr,0*8(sp) /* restore exception pointer */
381 ald pv,2*8(sp) /* restore data segment pointer */
382 ald ra,3*8(sp) /* restore return address */
383 ald t0,4*8(sp) /* get maybe-leaf flag */
384 aaddiu sp,sp,6*8 /* free stackframe */
386 beqz t0,L_asm_handle_exception_no_leaf
388 RESTORE_ARGUMENT_REGISTERS(0) /* if this is a leaf method, we have */
389 RESTORE_TEMPORARY_REGISTERS(ARG_CNT)/* to restore arg and temp registers */
391 aaddiu sp,sp,(ARG_CNT+TMP_CNT)*8 /* remove maybe-leaf stackframe */
393 L_asm_handle_exception_no_leaf:
394 jr xpc /* jump to the handler */
396 L_asm_handle_exception_not_catched:
397 ald xptr,0*8(sp) /* restore exception pointer */
398 ald pv,2*8(sp) /* restore data segment pointer */
399 ald ra,3*8(sp) /* restore return address */
400 ald t0,4*8(sp) /* get maybe-leaf flag */
401 aaddiu sp,sp,6*8 /* free stackframe */
403 beqz t0,L_asm_handle_exception_no_leaf_stack
405 aaddiu sp,sp,(ARG_CNT+TMP_CNT)*8 /* remove maybe-leaf stackframe */
406 move t0,zero /* clear the maybe-leaf flag */
408 L_asm_handle_exception_no_leaf_stack:
409 lw t1,FrameSize(pv) /* get frame size */
410 aaddu t1,sp,t1 /* pointer to save area */
412 lw t2,IsLeaf(pv) /* is leaf procedure */
413 bnez t2,L_asm_handle_exception_no_ra_restore
415 ald ra,-1*8(t1) /* restore ra */
416 aaddiu t1,t1,-8 /* t1-- */
418 L_asm_handle_exception_no_ra_restore:
419 move xpc,ra /* the new xpc is ra */
420 lw t2,IntSave(pv) /* t1 = saved int register count */
421 ala t3,ex_int2 /* t3 = current pc */
422 sll t2,t2,2 /* t2 = register count * 4 */
423 asubu t3,t3,t2 /* t3 = IntSave - 4 * register count */
424 jr t3 /* jump to save position */
435 sll t2,t2,1 /* t2 = register count * 4 * 2 */
436 asubu t1,t1,t2 /* t1 = t0 - 8 * register count */
438 lw t2,FltSave(pv) /* t2 = saved flt register count */
439 ala t3,ex_flt2 /* t3 = current pc */
440 sll t2,t2,2 /* t2 = register count * 4 */
441 asubu t3,t3,t2 /* t3 = ex_int_sav - 4 * register count */
442 jr t3 /* jump to save position */
450 lw t1,FrameSize(pv) /* get frame size */
451 aaddu sp,sp,t1 /* unwind stack */
452 b L_asm_handle_exception_stack_loop
454 .end asm_handle_nat_exception
457 /* asm_wrapper_patcher *********************************************************
462 40 return address into JIT code (patch position)
463 32 pointer to virtual java_objectheader
464 24 machine code (which is patched back later)
465 16 unresolved class/method/field reference
466 8 data segment displacement from load instructions
467 0 patcher function pointer to call
469 *******************************************************************************/
471 .ent asm_wrapper_patcher
474 aaddiu sp,sp,-((2+16+22+4)*8+sizestackframeinfo) /* create stack frame */
476 SAVE_RETURN_REGISTERS(0) /* save 1 int/1 float return registers */
477 SAVE_ARGUMENT_REGISTERS(2) /* save 8 int/8 float argument registers */
478 SAVE_TEMPORARY_REGISTERS(18) /* save 5 int/16 float temporary registers */
480 ast itmp1,(2+16+22+0)*8(sp) /* save itmp1 */
481 ast itmp2,(2+16+22+1)*8(sp) /* save itmp2 */
482 ast ra,(2+16+22+2)*8(sp) /* save method return address (for leafs) */
483 ast pv,(2+16+22+3)*8(sp) /* save pv of calling java function */
485 aaddiu a0,sp,(2+16+22+4)*8 /* create stackframe info */
486 move a1,pv /* pass java pv */
487 aaddiu a2,sp,((6+2+16+22+4)*8+sizestackframeinfo) /* pass java sp */
488 move a3,ra /* this is correct for leafs */
489 ald a4,((5+2+16+22+4)*8+sizestackframeinfo)(sp) /* pass xpc */
490 jal stacktrace_create_extern_stackframeinfo
492 aaddiu a0,sp,((0+2+16+22+4)*8+sizestackframeinfo) /* pass sp */
493 ald itmp3,((0+2+16+22+4)*8+sizestackframeinfo)(sp) /* get function */
494 ald itmp1,(2+16+22+3)*8(sp) /* save pv to the position of fp */
495 ast itmp1,((0+2+16+22+4)*8+sizestackframeinfo)(sp)
497 ast v0,((0+2+16+22+4)*8+sizestackframeinfo)(sp) /* save return value */
499 aaddiu a0,sp,(2+16+22+4)*8 /* remove stackframe info */
500 jal stacktrace_remove_stackframeinfo
502 RESTORE_RETURN_REGISTERS(0) /* restore 1 int/1 float return registers */
503 RESTORE_ARGUMENT_REGISTERS(2) /* restore 8 int/8 float argument registers */
504 RESTORE_TEMPORARY_REGISTERS(18) /* restore 5 int/16 float temporary reg. */
506 ald itmp1,(2+16+22+0)*8(sp) /* restore itmp1 */
507 ald itmp2,(2+16+22+1)*8(sp) /* restore itmp2 */
508 ald ra,(2+16+22+2)*8(sp) /* restore method return address (for leafs)*/
509 ald pv,(2+16+22+3)*8(sp) /* restore pv of calling java function */
511 ald itmp3,((0+2+16+22+4)*8+sizestackframeinfo)(sp) /* get return value*/
512 beqz itmp3,L_asm_wrapper_patcher_exception
514 ald itmp3,((5+2+16+22+4)*8+sizestackframeinfo)(sp) /* get RA to JIT */
515 aaddiu sp,sp,((6+2+16+22+4)*8+sizestackframeinfo) /* remove stack frame */
517 jr itmp3 /* jump to new patched code */
519 L_asm_wrapper_patcher_exception:
520 ald xpc,((5+2+16+22+4)*8+sizestackframeinfo)(sp) /* RA to JIT is xpc */
521 aaddiu sp,sp,((6+2+16+22+4)*8+sizestackframeinfo) /* remove stack frame */
523 #if defined(ENABLE_THREADS)
528 jal builtin_asm_get_exceptionptrptr
536 ld xptr,0(v0) /* get the exception pointer */
537 sd zero,0(v0) /* clear the exception pointer */
538 b asm_handle_exception
540 .end asm_wrapper_patcher
543 /* asm_replacement_out *********************************************************
545 This code is jumped to from the replacement-out stubs that are executed
546 when a thread reaches an activated replacement point.
548 The purpose of asm_replacement_out is to read out the parts of the
549 execution state that cannot be accessed from C code, store this state,
550 and then call the C function replace_me.
553 16 start of stack inside method to replace
554 0 rplpoint * info on the replacement point that was reached
556 NOTE: itmp3 has been clobbered by the replacement-out stub!
558 *******************************************************************************/
560 /* some room to accomodate changes of the stack frame size during replacement */
561 /* XXX we should find a cleaner solution here */
562 #define REPLACEMENT_ROOM 512
564 #define REPLACEMENT_STACK_OFFSET ((sizeexecutionstate + REPLACEMENT_ROOM + 0xf) & ~0xf)
566 .ent asm_replacement_out
569 /* create stack frame */
570 daddiu sp,sp,-REPLACEMENT_STACK_OFFSET
572 /* save registers in execution state */
573 sd $0 ,( 0*8+offes_intregs)(sp)
574 sd $1 ,( 1*8+offes_intregs)(sp)
575 sd $2 ,( 2*8+offes_intregs)(sp)
576 sd $3 ,( 3*8+offes_intregs)(sp)
577 sd $4 ,( 4*8+offes_intregs)(sp)
578 sd $5 ,( 5*8+offes_intregs)(sp)
579 sd $6 ,( 6*8+offes_intregs)(sp)
580 sd $7 ,( 7*8+offes_intregs)(sp)
581 sd $8 ,( 8*8+offes_intregs)(sp)
582 sd $9 ,( 9*8+offes_intregs)(sp)
583 sd $10,(10*8+offes_intregs)(sp)
584 sd $11,(11*8+offes_intregs)(sp)
585 sd $12,(12*8+offes_intregs)(sp)
586 sd $13,(13*8+offes_intregs)(sp)
587 sd $14,(14*8+offes_intregs)(sp)
588 sd $15,(15*8+offes_intregs)(sp)
589 sd $16,(16*8+offes_intregs)(sp)
590 sd $17,(17*8+offes_intregs)(sp)
591 sd $18,(18*8+offes_intregs)(sp)
592 sd $19,(19*8+offes_intregs)(sp)
593 sd $20,(20*8+offes_intregs)(sp)
594 sd $21,(21*8+offes_intregs)(sp)
595 sd $22,(22*8+offes_intregs)(sp)
596 sd $23,(23*8+offes_intregs)(sp)
597 sd $24,(24*8+offes_intregs)(sp)
598 sd $25,(25*8+offes_intregs)(sp)
599 sd $26,(26*8+offes_intregs)(sp)
600 sd $27,(27*8+offes_intregs)(sp)
601 sd $28,(28*8+offes_intregs)(sp)
602 sd $29,(29*8+offes_intregs)(sp)
603 sd $30,(30*8+offes_intregs)(sp)
604 sd $31,(31*8+offes_intregs)(sp)
606 sdc1 $f0 ,( 0*8+offes_fltregs)(sp)
607 sdc1 $f1 ,( 1*8+offes_fltregs)(sp)
608 sdc1 $f2 ,( 2*8+offes_fltregs)(sp)
609 sdc1 $f3 ,( 3*8+offes_fltregs)(sp)
610 sdc1 $f4 ,( 4*8+offes_fltregs)(sp)
611 sdc1 $f5 ,( 5*8+offes_fltregs)(sp)
612 sdc1 $f6 ,( 6*8+offes_fltregs)(sp)
613 sdc1 $f7 ,( 7*8+offes_fltregs)(sp)
614 sdc1 $f8 ,( 8*8+offes_fltregs)(sp)
615 sdc1 $f9 ,( 9*8+offes_fltregs)(sp)
616 sdc1 $f10,(10*8+offes_fltregs)(sp)
617 sdc1 $f11,(11*8+offes_fltregs)(sp)
618 sdc1 $f12,(12*8+offes_fltregs)(sp)
619 sdc1 $f13,(13*8+offes_fltregs)(sp)
620 sdc1 $f14,(14*8+offes_fltregs)(sp)
621 sdc1 $f15,(15*8+offes_fltregs)(sp)
622 sdc1 $f16,(16*8+offes_fltregs)(sp)
623 sdc1 $f17,(17*8+offes_fltregs)(sp)
624 sdc1 $f18,(18*8+offes_fltregs)(sp)
625 sdc1 $f19,(19*8+offes_fltregs)(sp)
626 sdc1 $f20,(20*8+offes_fltregs)(sp)
627 sdc1 $f21,(21*8+offes_fltregs)(sp)
628 sdc1 $f22,(22*8+offes_fltregs)(sp)
629 sdc1 $f23,(23*8+offes_fltregs)(sp)
630 sdc1 $f24,(24*8+offes_fltregs)(sp)
631 sdc1 $f25,(25*8+offes_fltregs)(sp)
632 sdc1 $f26,(26*8+offes_fltregs)(sp)
633 sdc1 $f27,(27*8+offes_fltregs)(sp)
634 sdc1 $f28,(28*8+offes_fltregs)(sp)
635 sdc1 $f29,(29*8+offes_fltregs)(sp)
636 sdc1 $f30,(30*8+offes_fltregs)(sp)
637 sdc1 $f31,(31*8+offes_fltregs)(sp)
639 /* calculate sp of method */
640 daddiu itmp1,sp,(REPLACEMENT_STACK_OFFSET + 2*8)
641 sd itmp1,(offes_sp)(sp)
646 /* call replace_me */
647 ld a0,-(2*8)(itmp1) /* arg0: rplpoint * */
648 move a1,sp /* arg1: execution state */
649 jal replace_me /* call C function replace_me */
650 jal abort /* NEVER REACHED */
652 .end asm_replacement_out
654 /* asm_replacement_in **********************************************************
656 This code writes the given execution state and jumps to the replacement
659 This function never returns!
661 NOTE: itmp3 is not restored!
664 void asm_replacement_in(executionstate *es);
666 *******************************************************************************/
668 .ent asm_replacement_in
671 /* a0 == executionstate *es */
673 /* set new sp and pv */
677 /* copy registers from execution state */
679 ld $1 ,( 1*8+offes_intregs)(a0)
680 ld $2 ,( 2*8+offes_intregs)(a0)
681 ld $3 ,( 2*8+offes_intregs)(a0)
682 /* a0 is loaded below */
683 ld $5 ,( 5*8+offes_intregs)(a0)
684 ld $6 ,( 6*8+offes_intregs)(a0)
685 ld $7 ,( 7*8+offes_intregs)(a0)
686 ld $8 ,( 8*8+offes_intregs)(a0)
687 ld $9 ,( 9*8+offes_intregs)(a0)
688 ld $10,(10*8+offes_intregs)(a0)
689 ld $11,(11*8+offes_intregs)(a0)
690 ld $12,(12*8+offes_intregs)(a0)
691 ld $13,(13*8+offes_intregs)(a0)
692 ld $14,(14*8+offes_intregs)(a0)
693 ld $15,(15*8+offes_intregs)(a0)
694 ld $16,(16*8+offes_intregs)(a0)
695 ld $17,(17*8+offes_intregs)(a0)
696 ld $18,(18*8+offes_intregs)(a0)
697 ld $19,(19*8+offes_intregs)(a0)
698 ld $20,(20*8+offes_intregs)(a0)
699 ld $21,(21*8+offes_intregs)(a0)
700 ld $22,(22*8+offes_intregs)(a0)
701 ld $23,(23*8+offes_intregs)(a0)
702 ld $24,(24*8+offes_intregs)(a0)
703 ld $25,(25*8+offes_intregs)(a0)
704 ld $26,(26*8+offes_intregs)(a0)
705 ld $27,(27*8+offes_intregs)(a0)
706 ld $28,(28*8+offes_intregs)(a0)
709 ld $31,(31*8+offes_intregs)(a0)
711 ldc1 $f0 ,( 0*8+offes_fltregs)(a0)
712 ldc1 $f1 ,( 1*8+offes_fltregs)(a0)
713 ldc1 $f2 ,( 2*8+offes_fltregs)(a0)
714 ldc1 $f3 ,( 3*8+offes_fltregs)(a0)
715 ldc1 $f4 ,( 4*8+offes_fltregs)(a0)
716 ldc1 $f5 ,( 5*8+offes_fltregs)(a0)
717 ldc1 $f6 ,( 6*8+offes_fltregs)(a0)
718 ldc1 $f7 ,( 7*8+offes_fltregs)(a0)
719 ldc1 $f8 ,( 8*8+offes_fltregs)(a0)
720 ldc1 $f9 ,( 9*8+offes_fltregs)(a0)
721 ldc1 $f10,(10*8+offes_fltregs)(a0)
722 ldc1 $f11,(11*8+offes_fltregs)(a0)
723 ldc1 $f12,(12*8+offes_fltregs)(a0)
724 ldc1 $f13,(13*8+offes_fltregs)(a0)
725 ldc1 $f14,(14*8+offes_fltregs)(a0)
726 ldc1 $f15,(15*8+offes_fltregs)(a0)
727 ldc1 $f16,(16*8+offes_fltregs)(a0)
728 ldc1 $f17,(17*8+offes_fltregs)(a0)
729 ldc1 $f18,(18*8+offes_fltregs)(a0)
730 ldc1 $f19,(19*8+offes_fltregs)(a0)
731 ldc1 $f20,(20*8+offes_fltregs)(a0)
732 ldc1 $f21,(21*8+offes_fltregs)(a0)
733 ldc1 $f22,(22*8+offes_fltregs)(a0)
734 ldc1 $f23,(23*8+offes_fltregs)(a0)
735 ldc1 $f24,(24*8+offes_fltregs)(a0)
736 ldc1 $f25,(25*8+offes_fltregs)(a0)
737 ldc1 $f26,(26*8+offes_fltregs)(a0)
738 ldc1 $f27,(27*8+offes_fltregs)(a0)
739 ldc1 $f28,(28*8+offes_fltregs)(a0)
740 ldc1 $f29,(29*8+offes_fltregs)(a0)
741 ldc1 $f30,(30*8+offes_fltregs)(a0)
742 ldc1 $f31,(31*8+offes_fltregs)(a0)
746 ld itmp3,offes_pc(a0)
750 ld a0,(4*8+offes_intregs)(a0)
752 /* jump to new code */
756 .end asm_replacement_in
758 /******************* function asm_initialize_thread_stack **********************
760 * u1* asm_initialize_thread_stack (void *func, u1 *stack); *
762 * initialize a thread stack *
764 *******************************************************************************/
766 .ent asm_initialize_thread_stack
768 asm_initialize_thread_stack:
769 aaddiu a1,a1,-14*8 /* allocate save area */
770 sd zero, 0*8(a1) /* s0 initalize thread area */
771 sd zero, 1*8(a1) /* s1 */
772 sd zero, 2*8(a1) /* s2 */
773 sd zero, 3*8(a1) /* s3 */
774 sd zero, 4*8(a1) /* s4 */
775 sd zero, 5*8(a1) /* s5 */
776 sd zero, 6*8(a1) /* s6 */
777 sd zero, 7*8(a1) /* s7 */
778 sd zero, 8*8(a1) /* s8 */
779 sd zero, 9*8(a1) /* fs0 */
780 sd zero,10*8(a1) /* fs1 */
781 sd zero,11*8(a1) /* fs2 */
782 sd zero,12*8(a1) /* fs3 */
787 .end asm_initialize_thread_stack
790 /******************* function asm_perform_threadswitch *************************
792 * void asm_perform_threadswitch (u1 **from, u1 **to, u1 **stackTop); *
794 * performs a threadswitch *
796 *******************************************************************************/
798 .ent asm_perform_threadswitch
800 asm_perform_threadswitch:
801 aaddiu sp,sp,-14*8 /* allocate new stack */
802 sd s0, 0*8(sp) /* save saved registers of old thread */
816 ast sp,0(a0) /* save old stack pointer */
817 ast sp,0(a2) /* stackTop = old stack pointer */
818 ald sp,0(a1) /* load new stack pointer */
819 ld s0, 0*8(sp) /* load saved registers of new thread */
833 aaddiu sp,sp,14*8 /* deallocate new stack */
837 .end asm_perform_threadswitch
840 /********************* function asm_switchstackandcall *************************
842 * void asm_switchstackandcall (void *stack, void *func, void **stacktopsave); *
844 * Switches to a new stack, calls a function and switches back. *
845 * a0 new stack pointer *
846 * a1 function pointer *
847 * a2 pointer to variable where stack top should be stored *
849 *******************************************************************************/
851 .ent asm_switchstackandcall
853 asm_switchstackandcall:
854 aaddiu a0,a0,-16 /* allocate new stack */
855 sd ra,0(a0) /* save return address on new stack */
856 sd sp,8(a0) /* save old stack pointer on new stack */
857 sd sp,0(a2) /* save old stack pointer to variable */
858 move sp,a0 /* switch to new stack */
862 jalr itmp3 /* and call function */
864 ld ra,0(sp) /* load return address */
865 ld sp,8(sp) /* switch to old stack */
869 .end asm_switchstackandcall
872 .ent asm_getclassvalues_atomic
874 asm_getclassvalues_atomic:
881 sw t0,offcast_super_baseval(a2)
882 sw t1,offcast_super_diffval(a2)
883 sw t2,offcast_sub_baseval(a2)
886 .end asm_getclassvalues_atomic
890 asm_criticalsections:
891 #if defined(ENABLE_THREADS)
901 .ent compare_and_swap
914 .end compare_and_swap
917 /* Disable exec-stacks, required for Gentoo ***********************************/
919 #if defined(__GCC__) && defined(__ELF__)
920 .section .note.GNU-stack,"",@progbits
925 * These are local overrides for various environment variables in Emacs.
926 * Please do not remove this and leave it at the end of the file, where
927 * Emacs will automagically detect them.
928 * ---------------------------------------------------------------------
931 * indent-tabs-mode: t
935 * vim:noexpandtab:sw=4:ts=4: