1 /* src/vm/jit/alpha/asmpart.S - Java-C interface functions for alpha
3 Copyright (C) 1996-2005, 2006, 2007 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 $Id: asmpart.S 7253 2007-01-29 21:37:00Z twisti $
32 #include "vm/jit/alpha/md-abi.h"
33 #include "vm/jit/alpha/md-asm.h"
34 #include "vm/jit/alpha/offsets.h"
36 #include "vm/jit/abi-asm.h"
37 #include "vm/jit/methodheader.h"
45 /* export functions ***********************************************************/
47 .globl asm_vm_call_method
48 .globl asm_vm_call_method_int
49 .globl asm_vm_call_method_long
50 .globl asm_vm_call_method_float
51 .globl asm_vm_call_method_double
52 .globl asm_vm_call_method_exception_handler
54 .globl asm_call_jit_compiler
56 .globl asm_handle_exception
57 .globl asm_handle_nat_exception
59 .globl asm_abstractmethoderror
61 .globl asm_patcher_wrapper
63 #if defined(ENABLE_REPLACEMENT)
64 .globl asm_replacement_out
65 .globl asm_replacement_in
68 .globl asm_compare_and_swap
69 .globl asm_memory_barrier
71 .globl asm_criticalsections
72 .globl asm_getclassvalues_atomic
78 /* asm_vm_call_method **********************************************************
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. *
87 * javaobject_header *asm_calljavafunction (methodinfo *m, *
88 * void *arg1, void *arg2, void *arg3, void *arg4); *
90 *******************************************************************************/
92 .ent asm_vm_call_method
96 .quad 0 /* catch type all */
97 .quad 0 /* handler pc */
99 .quad 0 /* start pc */
100 .long 1 /* extable size */
101 .long 0 /* ALIGNMENT PADDING */
102 .quad 0 /* line number table start */
103 .quad 0 /* line number table size */
104 .long 0 /* ALIGNMENT PADDING */
105 .long 0 /* fltsave */
106 .long 1 /* intsave */
109 .long 0 /* frame size */
110 .quad 0 /* codeinfo pointer */
113 asm_vm_call_method_int:
114 asm_vm_call_method_long:
115 asm_vm_call_method_float:
116 asm_vm_call_method_double:
118 lda sp,-5*8(sp) /* allocate stack space */
119 stq ra,0*8(sp) /* save return address */
120 stq gp,1*8(sp) /* save global pointer */
123 stq a0,4*8(sp) /* save method pointer for compiler */
125 mov a2,t0 /* pointer to arg block */
126 mov a1,s6 /* arg count */
128 ble s6,calljava_argsloaded
130 ldq a0,offvmargdata(t0)
131 ldt $f16,offvmargdata(t0)
132 ble s6,calljava_argsloaded
135 ldq a1,offvmargdata+sizevmarg*1(t0)
136 ldt $f17,offvmargdata+sizevmarg*1(t0)
137 ble s6,calljava_argsloaded
140 ldq a2,offvmargdata+sizevmarg*2(t0)
141 ldt $f18,offvmargdata+sizevmarg*2(t0)
142 ble s6,calljava_argsloaded
145 ldq a3,offvmargdata+sizevmarg*3(t0)
146 ldt $f19,offvmargdata+sizevmarg*3(t0)
147 ble s6,calljava_argsloaded
150 ldq a4,offvmargdata+sizevmarg*4(t0)
151 ldt $f20,offvmargdata+sizevmarg*4(t0)
152 ble s6,calljava_argsloaded
155 ldq a5,offvmargdata+sizevmarg*5(t0)
156 ldt $f21,offvmargdata+sizevmarg*5(t0)
159 ble s6,calljava_nocopy
165 ldq t3,offvmargdata+sizevmarg*6(t0)
170 bne t1,calljava_copyloop
173 ldq itmp1,4*8(t4) /* pass method pointer via itmp1 */
175 lda mptr,asm_call_jit_compiler/* fake virtual function call (2 instr) */
176 stq mptr,2*8(t4) /* store function address */
177 lda mptr,1*8(t4) /* set method pointer */
179 ldq pv,1*8(mptr) /* method call as in Java */
180 jmp ra,(pv) /* call JIT compiler */
182 lda pv,(asm_vm_call_method - calljava_jit2)(ra)
186 ldq ra,0*8(sp) /* restore return address */
187 ldq gp,1*8(sp) /* restore global pointer */
189 lda sp,5*8(sp) /* free stack space */
194 asm_vm_call_method_exception_handler:
196 ldq gp,1*8(sp) /* restore global pointer */
198 jsr ra,builtin_throw_exception
199 ldq ra,0*8(sp) /* restore return address */
201 lda sp,5*8(sp) /* free stack space */
204 .end asm_vm_call_method
207 /* asm_call_jit_compiler *******************************************************
209 Invokes the compiler for untranslated Java methods.
211 *******************************************************************************/
213 .ent asm_call_jit_compiler
215 asm_call_jit_compiler:
217 lda sp,-(ARG_CNT+2)*8(sp) /* +2: keep stack 16-byte aligned */
219 stq ra,0*8(sp) /* save return address */
221 SAVE_ARGUMENT_REGISTERS(1) /* save 6 int/6 float argument registers */
223 mov itmp1,a0 /* pass methodinfo pointer */
224 mov mptr,a1 /* pass method pointer */
225 lda a2,(ARG_CNT+2)*8(sp) /* pass java sp */
227 jsr ra,jit_asm_compile /* call jit compiler */
230 ldq ra,0*8(sp) /* load return address */
232 RESTORE_ARGUMENT_REGISTERS(1) /* restore 6 int/6 float argument registers */
234 lda sp,(ARG_CNT+2)*8(sp) /* remove stack frame */
236 beq pv,L_asm_call_jit_compiler_exception
238 jmp zero,(pv) /* and call method, the method returns */
239 /* directly to the caller (ra). */
241 L_asm_call_jit_compiler_exception:
243 stq ra,0*8(sp) /* save return address (xpc) */
244 jsr ra,exceptions_get_and_clear_exception
245 ldq ra,0*8(sp) /* restore return address (xpc) */
248 mov v0,xptr /* get exception */
249 subq ra,4,xpc /* exception address is ra - 4 */
250 br L_asm_handle_nat_exception
252 .end asm_call_jit_compiler
255 /* asm_handle_exception ********************************************************
257 This function handles an exception. It does not use the usual calling
258 conventions. The exception pointer is passed in REG_ITMP1 and the
259 pc from the exception raising position is passed in REG_ITMP2. It searches
260 the local exception table for a handler. If no one is found, it unwinds
261 stacks and continues searching the callers.
263 ATTENTION: itmp3 == gp!
265 *******************************************************************************/
267 .ent asm_handle_nat_exception
269 asm_handle_nat_exception:
270 L_asm_handle_nat_exception: /* required for PIC code */
271 L_asm_handle_exception_stack_loop:
272 lda sp,-6*8(sp) /* keep stack 16-byte aligned */
273 stq xptr,0*8(sp) /* save xptr */
274 stq xpc,1*8(sp) /* save xpc */
275 stq ra,3*8(sp) /* save RA */
276 stq zero,4*8(sp) /* save maybe-leaf flag (cleared) */
278 mov ra,a0 /* pass RA */
280 br ra,L_asm_handle_exception_load_gp
281 L_asm_handle_exception_load_gp:
282 ldgp gp,0(ra) /* load gp */
284 jsr ra,md_codegen_get_pv_from_pc/* get PV from RA */
285 stq v0,2*8(sp) /* save PV */
287 ldq a0,0*8(sp) /* pass xptr */
288 ldq a1,1*8(sp) /* pass xpc */
289 mov v0,a2 /* pass PV */
290 addq sp,6*8,a3 /* pass Java SP */
292 br L_asm_handle_exception_continue
294 .aent asm_handle_exception
296 asm_handle_exception:
297 L_asm_handle_exception: /* required for PIC code */
298 lda sp,-(ARG_CNT+TMP_CNT)*8(sp) /* create maybe-leaf stackframe */
300 SAVE_ARGUMENT_REGISTERS(0) /* we save arg and temp registers in */
301 SAVE_TEMPORARY_REGISTERS(ARG_CNT) /* case this is a leaf method */
303 lda sp,-6*8(sp) /* keep stack 16-byte aligned */
304 stq xptr,0*8(sp) /* save xptr */
305 stq pv,2*8(sp) /* save PV */
306 stq ra,3*8(sp) /* save RA */
307 lda t0,1(zero) /* set maybe-leaf flag */
308 stq t0,4*8(sp) /* save maybe-leaf flag */
310 br ra,L_asm_handle_exception_load_gp_2
311 L_asm_handle_exception_load_gp_2:
312 ldgp gp,0(ra) /* load gp */
314 mov xptr,a0 /* pass xptr */
315 mov xpc,a1 /* pass xpc */
316 mov pv,a2 /* pass PV */
317 lda a3,(ARG_CNT+TMP_CNT+6)*8(sp)/* pass Java SP */
319 L_asm_handle_exception_continue:
320 jsr ra,exceptions_handle_exception
322 beq v0,L_asm_handle_exception_not_catched
324 mov v0,xpc /* move handlerpc into xpc */
325 ldq xptr,0*8(sp) /* restore xptr */
326 ldq pv,2*8(sp) /* restore PV */
327 ldq ra,3*8(sp) /* restore RA */
328 ldq t0,4*8(sp) /* get maybe-leaf flag */
329 lda sp,6*8(sp) /* free stack frame */
331 beq t0,L_asm_handle_exception_no_leaf
333 RESTORE_ARGUMENT_REGISTERS(0) /* if this is a leaf method, we have */
334 RESTORE_TEMPORARY_REGISTERS(ARG_CNT)/* to restore arg and temp registers */
336 lda sp,(ARG_CNT+TMP_CNT)*8(sp) /* remove maybe-leaf stackframe */
338 L_asm_handle_exception_no_leaf:
339 jmp zero,(xpc) /* jump to the handler */
341 L_asm_handle_exception_not_catched:
342 ldq xptr,0*8(sp) /* restore xptr */
343 ldq pv,2*8(sp) /* restore PV */
344 ldq ra,3*8(sp) /* restore RA */
345 ldq t0,4*8(sp) /* get maybe-leaf flag */
348 beq t0,L_asm_handle_exception_no_leaf_stack
350 lda sp,(ARG_CNT+TMP_CNT)*8(sp) /* remove maybe-leaf stackframe */
351 mov zero,t0 /* clear the maybe-leaf flag */
353 L_asm_handle_exception_no_leaf_stack:
354 ldl t1,FrameSize(pv) /* get frame size */
355 addq t1,sp,t1 /* pointer to save area */
357 ldl t2,IsLeaf(pv) /* is leaf procedure */
358 bne t2,L_asm_handle_exception_no_ra_restore
360 ldq ra,-1*8(t1) /* restore ra */
361 subq t1,8,t1 /* t1-- */
363 L_asm_handle_exception_no_ra_restore:
364 mov ra,xpc /* the new xpc is ra */
365 ldl t2,IntSave(pv) /* t2 = saved int register count */
366 br t3,ex_int1 /* t3 = current pc */
368 lda t3,(ex_int2 - ex_int1)(t3)
369 negl t2,t2 /* negate register count */
370 s4addq t2,t3,t3 /* t2 = IntSave - register count * 4 */
371 jmp zero,(t3) /* jump to save position */
382 s8addq t2,t1,t1 /* t1 = t1 - 8 * register count */
384 ldl t2,FltSave(pv) /* t2 = saved flt register count */
385 br t3,ex_flt1 /* t3 = current pc */
387 lda t3,(ex_flt2 - ex_flt1)(t3)
388 negl t2,t2 /* negate register count */
389 s4addq t2,t3,t3 /* t2 = FltSave - 4 * register count */
390 jmp zero,(t3) /* jump to save position */
402 ldl t1,FrameSize(pv) /* get frame size */
403 addq sp,t1,sp /* unwind stack */
404 br L_asm_handle_exception_stack_loop
406 .end asm_handle_nat_exception
409 /* asm_abstractmethoderror *****************************************************
411 Creates and throws an AbstractMethodError.
413 *******************************************************************************/
415 .ent asm_abstractmethoderror
417 asm_abstractmethoderror:
418 subq sp,2*8,sp /* create stackframe */
419 stq ra,0*8(sp) /* save return address */
420 addq sp,2*8,a0 /* pass java sp */
421 mov ra,a1 /* pass exception address */
422 jsr ra,exceptions_asm_new_abstractmethoderror
423 ldq ra,0*8(sp) /* restore return address */
424 addq sp,2*8,sp /* remove stackframe */
426 mov v0,xptr /* get exception pointer */
427 subq ra,4,xpc /* exception address is ra - 4 */
428 br L_asm_handle_nat_exception
430 .end asm_abstractmethoderror
433 /* asm_patcher_wrapper *********************************************************
438 40 return address into JIT code (patch position)
439 32 pointer to virtual java_objectheader
440 24 machine code (which is patched back later)
441 16 unresolved class/method/field reference
442 8 data segment displacement from load instructions
443 0 patcher function pointer to call (pv afterwards)
445 ATTENTION: itmp3 == gp! But we don't need gp do call the patcher function.
447 *******************************************************************************/
449 .ent asm_patcher_wrapper
452 lda sp,-((2+12+27+4)*8)(sp) /* create stack frame */
454 SAVE_RETURN_REGISTERS(0) /* save 1 int/1 float return registers */
455 SAVE_ARGUMENT_REGISTERS(2) /* save 6 int/6 float argument registers */
456 SAVE_TEMPORARY_REGISTERS(14) /* save 11 int/16 float temporary registers */
458 stq itmp1,(2+12+27+0)*8(sp) /* save itmp1 */
459 stq itmp2,(2+12+27+1)*8(sp) /* save itmp2 */
460 stq ra,(2+12+27+2)*8(sp) /* save method return address (for leafs) */
461 stq pv,(2+12+27+3)*8(sp) /* save pv of calling java function */
463 br ra,L_asm_patcher_wrapper_load_gp
464 L_asm_patcher_wrapper_load_gp:
465 ldgp gp,0(ra) /* load gp (it's not set correctly in jit) */
467 lda a0,(2+12+27+4)*8(sp) /* pass SP of patcher stub */
468 mov pv,a1 /* pass PV */
469 ldq a2,(2+12+27+2)*8(sp) /* pass RA (correct for leafs) */
470 jsr ra,patcher_wrapper
472 stq v0,(0+2+12+27+4)*8(sp) /* save return value */
474 RESTORE_RETURN_REGISTERS(0) /* restore 1 int/1 float return registers */
475 RESTORE_ARGUMENT_REGISTERS(2) /* restore 6 int/6 float argument registers */
476 RESTORE_TEMPORARY_REGISTERS(14) /* restore 11 integer temporary registers */
478 ldq itmp1,(2+12+27+0)*8(sp) /* restore itmp1 */
479 ldq itmp2,(2+12+27+1)*8(sp) /* restore itmp2 */
480 ldq ra,(2+12+27+2)*8(sp) /* restore method return address (for leafs)*/
481 ldq pv,(2+12+27+3)*8(sp) /* restore pv of calling java function */
483 ldq itmp3,(0+2+12+27+4)*8(sp) /* get return value */
484 bne itmp3,L_asm_patcher_wrapper_exception
486 ldq itmp3,(5+2+12+27+4)*8(sp) /* get RA to JIT */
487 lda sp,(6+2+12+27+4)*8(sp) /* remove stack frame */
489 jmp zero,(itmp3) /* jump to new patched code */
491 L_asm_patcher_wrapper_exception:
492 mov itmp3,xptr /* get exception */
493 ldq xpc,(5+2+12+27+4)*8(sp) /* RA is xpc */
494 lda sp,(6+2+12+27+4)*8(sp) /* remove stack frame */
495 br L_asm_handle_exception
497 .end asm_patcher_wrapper
500 #if defined(ENABLE_REPLACEMENT)
502 /* asm_replacement_out *********************************************************
504 This code is jumped to from the replacement-out stubs that are executed
505 when a thread reaches an activated replacement point.
507 The purpose of asm_replacement_out is to read out the parts of the
508 execution state that cannot be accessed from C code, store this state,
509 and then call the C function replace_me.
512 16 start of stack inside method to replace
513 0 rplpoint * info on the replacement point that was reached
515 NOTE: itmp3 has been clobbered by the replacement-out stub!
517 *******************************************************************************/
519 /* some room to accomodate changes of the stack frame size during replacement */
520 /* XXX we should find a cleaner solution here */
521 #define REPLACEMENT_ROOM 512
523 #define REPLACEMENT_STACK_OFFSET ((sizeexecutionstate + REPLACEMENT_ROOM + 0xf) & ~0xf)
525 .ent asm_replacement_out
528 /* create stack frame */
529 lda sp,-(REPLACEMENT_STACK_OFFSET)(sp)
531 /* save registers in execution state */
532 stq $0 ,( 0*8+offes_intregs)(sp)
533 stq $1 ,( 1*8+offes_intregs)(sp)
534 stq $2 ,( 2*8+offes_intregs)(sp)
535 stq $3 ,( 3*8+offes_intregs)(sp)
536 stq $4 ,( 4*8+offes_intregs)(sp)
537 stq $5 ,( 5*8+offes_intregs)(sp)
538 stq $6 ,( 6*8+offes_intregs)(sp)
539 stq $7 ,( 7*8+offes_intregs)(sp)
540 stq $8 ,( 8*8+offes_intregs)(sp)
541 stq $9 ,( 9*8+offes_intregs)(sp)
542 stq $10,(10*8+offes_intregs)(sp)
543 stq $11,(11*8+offes_intregs)(sp)
544 stq $12,(12*8+offes_intregs)(sp)
545 stq $13,(13*8+offes_intregs)(sp)
546 stq $14,(14*8+offes_intregs)(sp)
547 stq $15,(15*8+offes_intregs)(sp)
548 stq $16,(16*8+offes_intregs)(sp)
549 stq $17,(17*8+offes_intregs)(sp)
550 stq $18,(18*8+offes_intregs)(sp)
551 stq $19,(19*8+offes_intregs)(sp)
552 stq $20,(20*8+offes_intregs)(sp)
553 stq $21,(21*8+offes_intregs)(sp)
554 stq $22,(22*8+offes_intregs)(sp)
555 stq $23,(23*8+offes_intregs)(sp)
556 stq $24,(24*8+offes_intregs)(sp)
557 stq $25,(25*8+offes_intregs)(sp)
558 stq $26,(26*8+offes_intregs)(sp)
559 stq $27,(27*8+offes_intregs)(sp)
560 stq $28,(28*8+offes_intregs)(sp)
561 stq $29,(29*8+offes_intregs)(sp)
562 stq $30,(30*8+offes_intregs)(sp)
563 stq $31,(31*8+offes_intregs)(sp)
565 stt $f0 ,( 0*8+offes_fltregs)(sp)
566 stt $f1 ,( 1*8+offes_fltregs)(sp)
567 stt $f2 ,( 2*8+offes_fltregs)(sp)
568 stt $f3 ,( 3*8+offes_fltregs)(sp)
569 stt $f4 ,( 4*8+offes_fltregs)(sp)
570 stt $f5 ,( 5*8+offes_fltregs)(sp)
571 stt $f6 ,( 6*8+offes_fltregs)(sp)
572 stt $f7 ,( 7*8+offes_fltregs)(sp)
573 stt $f8 ,( 8*8+offes_fltregs)(sp)
574 stt $f9 ,( 9*8+offes_fltregs)(sp)
575 stt $f10,(10*8+offes_fltregs)(sp)
576 stt $f11,(11*8+offes_fltregs)(sp)
577 stt $f12,(12*8+offes_fltregs)(sp)
578 stt $f13,(13*8+offes_fltregs)(sp)
579 stt $f14,(14*8+offes_fltregs)(sp)
580 stt $f15,(15*8+offes_fltregs)(sp)
581 stt $f16,(16*8+offes_fltregs)(sp)
582 stt $f17,(17*8+offes_fltregs)(sp)
583 stt $f18,(18*8+offes_fltregs)(sp)
584 stt $f19,(19*8+offes_fltregs)(sp)
585 stt $f20,(20*8+offes_fltregs)(sp)
586 stt $f21,(21*8+offes_fltregs)(sp)
587 stt $f22,(22*8+offes_fltregs)(sp)
588 stt $f23,(23*8+offes_fltregs)(sp)
589 stt $f24,(24*8+offes_fltregs)(sp)
590 stt $f25,(25*8+offes_fltregs)(sp)
591 stt $f26,(26*8+offes_fltregs)(sp)
592 stt $f27,(27*8+offes_fltregs)(sp)
593 stt $f28,(28*8+offes_fltregs)(sp)
594 stt $f29,(29*8+offes_fltregs)(sp)
595 stt $f30,(30*8+offes_fltregs)(sp)
596 stt $f31,(31*8+offes_fltregs)(sp)
598 /* calculate sp of method */
599 lda itmp1,(REPLACEMENT_STACK_OFFSET + 2*8)(sp)
600 stq itmp1,(offes_sp)(sp)
602 br ra,L_asm_replacement_out_load_gp
603 L_asm_replacement_out_load_gp:
604 ldgp gp,0(ra) /* load gp */
607 stq pv,(offes_pv)(sp)
609 /* call replace_me */
610 ldq a0,-(2*8)(itmp1) /* arg0: rplpoint * */
611 mov sp,a1 /* arg1: execution state */
612 jmp zero,replace_me /* call C function replace_me */
613 jmp zero,abort /* NEVER REACHED */
615 .end asm_replacement_out
617 /* asm_replacement_in **********************************************************
619 This code writes the given execution state and jumps to the replacement
622 This function never returns!
624 NOTE: itmp3 is not restored!
627 void asm_replacement_in(executionstate *es, replace_safestack_t *st);
629 *******************************************************************************/
631 .ent asm_replacement_in
634 /* a0 == executionstate *es */
637 mov a1,s1 /* replace_safestack_t *st */
638 mov a0,s2 /* executionstate *es == safe stack */
640 /* switch to the safe stack */
643 /* call replace_build_execution_state(st) */
645 jsr ra,replace_build_execution_state
648 ldq sp,(offes_sp)(s2)
650 /* build stack frame */
651 lda sp,(-sizeexecutionstate)(sp)
653 /* call replace_free_safestack(st,& of allocated executionstate_t) */
654 mov sp,a1 /* tmpes */
656 jsr ra,replace_free_safestack
659 ldq pv,(offes_pv)(sp)
661 /* copy registers from execution state */
662 ldq $0 ,( 0*8+offes_intregs)(sp)
663 ldq $1 ,( 1*8+offes_intregs)(sp)
664 ldq $2 ,( 2*8+offes_intregs)(sp)
665 ldq $3 ,( 3*8+offes_intregs)(sp)
666 ldq $4 ,( 4*8+offes_intregs)(sp)
667 ldq $5 ,( 5*8+offes_intregs)(sp)
668 ldq $6 ,( 6*8+offes_intregs)(sp)
669 ldq $7 ,( 7*8+offes_intregs)(sp)
670 ldq $8 ,( 8*8+offes_intregs)(sp)
671 ldq $9 ,( 9*8+offes_intregs)(sp)
672 ldq $10,(10*8+offes_intregs)(sp)
673 ldq $11,(11*8+offes_intregs)(sp)
674 ldq $12,(12*8+offes_intregs)(sp)
675 ldq $13,(13*8+offes_intregs)(sp)
676 ldq $14,(14*8+offes_intregs)(sp)
677 ldq $15,(15*8+offes_intregs)(sp)
678 ldq a0, (16*8+offes_intregs)(sp)
679 ldq $17,(17*8+offes_intregs)(sp)
680 ldq $18,(18*8+offes_intregs)(sp)
681 ldq $19,(19*8+offes_intregs)(sp)
682 ldq $20,(20*8+offes_intregs)(sp)
683 ldq $21,(21*8+offes_intregs)(sp)
684 ldq $22,(22*8+offes_intregs)(sp)
685 ldq $23,(23*8+offes_intregs)(sp)
686 ldq $24,(24*8+offes_intregs)(sp)
687 ldq $25,(25*8+offes_intregs)(sp)
688 ldq $26,(26*8+offes_intregs)(sp)
690 ldq $28,(28*8+offes_intregs)(sp)
691 ldq $29,(29*8+offes_intregs)(sp)
695 ldt $f0 ,( 0*8+offes_fltregs)(sp)
696 ldt $f1 ,( 1*8+offes_fltregs)(sp)
697 ldt $f2 ,( 2*8+offes_fltregs)(sp)
698 ldt $f3 ,( 3*8+offes_fltregs)(sp)
699 ldt $f4 ,( 4*8+offes_fltregs)(sp)
700 ldt $f5 ,( 5*8+offes_fltregs)(sp)
701 ldt $f6 ,( 6*8+offes_fltregs)(sp)
702 ldt $f7 ,( 7*8+offes_fltregs)(sp)
703 ldt $f8 ,( 8*8+offes_fltregs)(sp)
704 ldt $f9 ,( 9*8+offes_fltregs)(sp)
705 ldt $f10,(10*8+offes_fltregs)(sp)
706 ldt $f11,(11*8+offes_fltregs)(sp)
707 ldt $f12,(12*8+offes_fltregs)(sp)
708 ldt $f13,(13*8+offes_fltregs)(sp)
709 ldt $f14,(14*8+offes_fltregs)(sp)
710 ldt $f15,(15*8+offes_fltregs)(sp)
711 ldt $f16,(16*8+offes_fltregs)(sp)
712 ldt $f17,(17*8+offes_fltregs)(sp)
713 ldt $f18,(18*8+offes_fltregs)(sp)
714 ldt $f19,(19*8+offes_fltregs)(sp)
715 ldt $f20,(20*8+offes_fltregs)(sp)
716 ldt $f21,(21*8+offes_fltregs)(sp)
717 ldt $f22,(22*8+offes_fltregs)(sp)
718 ldt $f23,(23*8+offes_fltregs)(sp)
719 ldt $f24,(24*8+offes_fltregs)(sp)
720 ldt $f25,(25*8+offes_fltregs)(sp)
721 ldt $f26,(26*8+offes_fltregs)(sp)
722 ldt $f27,(27*8+offes_fltregs)(sp)
723 ldt $f28,(28*8+offes_fltregs)(sp)
724 ldt $f29,(29*8+offes_fltregs)(sp)
725 ldt $f30,(30*8+offes_fltregs)(sp)
726 ldt $f31,(31*8+offes_fltregs)(sp)
730 ldq itmp3,offes_pc(sp)
732 /* remove stack frame */
734 lda sp,(sizeexecutionstate)(sp)
736 /* jump to new code */
740 .end asm_replacement_in
742 #endif /* defined(ENABLE_REPLACEMENT) */
745 /* asm_compare_and_swap ********************************************************
747 Does an atomic compare and swap. Required for the lock
750 Atomically do the following: Check if the location still contains
751 `oldval`. If so, replace it by `newval` and return `oldval`.
756 long compare_and_swap(volatile long *p, long oldval, long newval);
758 *******************************************************************************/
760 .ent asm_compare_and_swap
762 asm_compare_and_swap:
773 .end asm_compare_and_swap
776 /* asm_memory_barrier **********************************************************
778 A memory barrier for the Java Memory Model.
780 *******************************************************************************/
782 .ent asm_memory_barrier
788 .end asm_memory_barrier
791 .ent asm_getclassvalues_atomic
793 asm_getclassvalues_atomic:
796 ldl t0,offbaseval(a0)
797 ldl t1,offdiffval(a0)
798 ldl t2,offbaseval(a1)
800 stl t0,offcast_super_baseval(a2)
801 stl t1,offcast_super_diffval(a2)
802 stl t2,offcast_sub_baseval(a2)
805 .end asm_getclassvalues_atomic
810 asm_criticalsections:
811 #if defined(ENABLE_THREADS)
819 /* asm_md_init *****************************************************************
821 Initialize machine dependent stuff.
823 Determines if the byte support instruction set (21164a and higher)
826 *******************************************************************************/
831 .long 0x47e03c20 /* amask 1,v0 */
832 jmp zero,(ra) /* return */
837 /* asm_cacheflush **************************************************************
841 *******************************************************************************/
846 call_pal PAL_imb /* synchronize instruction cache */
852 /* Disable exec-stacks, required for Gentoo ***********************************/
854 #if defined(__GCC__) && defined(__ELF__)
855 .section .note.GNU-stack,"",@progbits
860 * These are local overrides for various environment variables in Emacs.
861 * Please do not remove this and leave it at the end of the file, where
862 * Emacs will automagically detect them.
863 * ---------------------------------------------------------------------
866 * indent-tabs-mode: t
870 * vim:noexpandtab:sw=4:ts=4: