1 #define LANGUAGE_ASSEMBLY
7 #include "genesis/simple-fun.h"
8 #include "genesis/fdefn.h"
9 #include "genesis/closure.h"
10 #include "genesis/funcallable-instance.h"
11 #include "genesis/static-symbols.h"
12 #ifdef LISP_FEATURE_SB_THREAD
13 #include "genesis/thread.h"
16 #ifdef LISP_FEATURE_DARWIN
17 #define CSYMBOL(x) _ ## x
22 #if defined LISP_FEATURE_DARWIN
23 #define FUNCDEF(x) .text @ \
27 #define GFUNCDEF(x) .globl _ ## x @ \
30 #define FUNCDEF(x) .text ; \
35 #define GFUNCDEF(x) .globl x ; \
39 #if defined LISP_FEATURE_DARWIN
42 #define SET_SIZE(x) .size x,.-x
45 /* Load a register from a global, using the register as an intermediary */
46 /* The register will be a fixnum for one instruction, so this is gc-safe */
48 #if defined LISP_FEATURE_DARWIN
49 #define load(reg,global) \
50 lis reg,ha16(global) @ \
51 lwz reg,lo16(global)(reg) ; Comment
52 #define store(reg,temp,global) \
53 lis temp,ha16(global) @\
54 stw reg,lo16(global)(temp) ; Comment
56 #define load(reg,global) \
57 lis reg,global@ha; lwz reg,global@l(reg)
58 #define store(reg,temp,global) \
59 lis temp,global@ha; stw reg,global@l(temp)
62 #define FIRST_SAVE_FPR 14 /* lowest-numbered non-volatile FPR */
63 #ifdef LISP_FEATURE_DARWIN
64 #define FIRST_SAVE_GPR 13 /* lowest-numbered non-volatile GPR */
65 #define NGPR_SAVE_BYTES(n) ((32-(n))*4)
66 #define FRAME_ARG_BYTES(n) (((((n)+6)*4)+15)&~15)
68 #define FIRST_SAVE_GPR 14 /* lowest-numbered non-volatile GPR */
69 #define NGPR_SAVE_BYTES(n) ((32-(~1&((n)+1)))*4)
70 #define FRAME_ARG_BYTES(n) (((((n)+2)*4)+15)&~15)
72 #define NFPR_SAVE_BYTES(n) ((32-(n))*8)
74 #ifdef LISP_FEATURE_DARWIN
75 #define FRAME_SIZE(first_g,first_f,out_arg_words,savecr) \
76 (NFPR_SAVE_BYTES(first_f)+ NGPR_SAVE_BYTES(first_g)+ FRAME_ARG_BYTES(out_arg_words))
77 #define SAVE_FPR(n) stfd f##n,-8*(32- n)(r11)
78 #define SAVE_GPR(n) stw r##n,-4*(32- n)(r11)
79 #define FULL_FRAME_SIZE (FRAME_SIZE(FIRST_SAVE_GPR,FIRST_SAVE_FPR,8,1)+15&~15)
80 #define RESTORE_FPR(n) lfd f##n,-8*(32- n)(r11)
81 #define RESTORE_GPR(n) lwz r##n,-4*(32- n)(r11)
83 #define FRAME_SIZE(first_g,first_f,out_arg_words,savecr) \
84 (NFPR_SAVE_BYTES(first_f)+ NGPR_SAVE_BYTES(first_g)+ FRAME_ARG_BYTES(out_arg_words+savecr))
85 #define SAVE_FPR(n) stfd n,-8*(32-(n))(11)
86 #define SAVE_GPR(n) stw n,-4*(32-(n))(11)
87 #define FULL_FRAME_SIZE FRAME_SIZE(FIRST_SAVE_GPR,FIRST_SAVE_FPR,0,1)
89 #define RESTORE_FPR(n) lfd n,-8*(32-(n))(11)
90 #define RESTORE_GPR(n) lwz n,-4*(32-(n))(11)
93 #ifdef LISP_FEATURE_DARWIN
94 #define C_FULL_PROLOG \
98 stw REG(0),4(REG(1)) @ \
100 stw REG(0),8(REG(1)) @ \
101 mr REG(11),REG(1) @ \
102 stwu REG(1),-FULL_FRAME_SIZE(REG(1)) @ \
121 la REG(11),-NFPR_SAVE_BYTES(FIRST_SAVE_FPR)(REG(11)) @ \
143 #define C_FULL_EPILOG \
144 la REG(11),FULL_FRAME_SIZE-NFPR_SAVE_BYTES(FIRST_SAVE_FPR)(REG(1)) @ \
164 la REG(11),NFPR_SAVE_BYTES(FIRST_SAVE_FPR)(REG(11)) @ \
183 lwz REG(1),0(REG(1)) @ \
184 lwz REG(0),4(REG(1)) @ \
186 lwz REG(0),8(REG(1)) @ \
191 #define C_FULL_PROLOG \
195 stwu 1,-FULL_FRAME_SIZE(1) ; \
214 la 11,-NFPR_SAVE_BYTES(FIRST_SAVE_FPR)(11) ; \
236 #define C_FULL_EPILOG \
239 la 11,FULL_FRAME_SIZE-NFPR_SAVE_BYTES(FIRST_SAVE_FPR)(1) ; \
258 la 11,NFPR_SAVE_BYTES(FIRST_SAVE_FPR)(11) ; \
286 * Function to transfer control into lisp. The lisp object to invoke is
287 * passed as the first argument, which puts it in NL0
290 GFUNCDEF(call_into_lisp)
292 /* NL0 - function, NL1 - frame pointer, NL2 - nargs. */
293 #if defined(LISP_FEATURE_SB_THREAD)
294 /* We need to obtain a pointer to our TLS block before we do
295 * anything else. For this, we call pthread_getspecific().
296 * We've preserved all of the callee-saves registers, so we
297 * can use them to stash our arguments temporarily while we
303 /* Call out to obtain our TLS block. */
304 load(reg_NL0,CSYMBOL(specials))
305 /* This won't work on darwin: wrong fixup style. And is it
306 * supposed to be lis/ori or lis/addi? Or does it differ
307 * between darwin and everything else again? */
308 lis reg_CFUNC,CSYMBOL(pthread_getspecific)@h
309 ori reg_CFUNC,reg_CFUNC,CSYMBOL(pthread_getspecific)@l
312 mr reg_THREAD, reg_NL0
314 /* Restore our original parameters. */
319 /* store(reg_POLL,11,saver2) */
320 /* Initialize tagged registers */
334 #if !defined(LISP_FEATURE_SB_THREAD)
338 #ifdef LISP_FEATURE_DARWIN
339 lis reg_NULL,hi16(NIL)
340 ori reg_NULL,reg_NULL,lo16(NIL)
343 ori reg_NULL,reg_NULL,NIL@l
345 /* Turn on pseudo-atomic */
347 li reg_ALLOC,flag_PseudoAtomic
348 #if defined(LISP_FEATURE_SB_THREAD)
349 stw reg_ZERO,THREAD_FOREIGN_FUNCTION_CALL_ACTIVE_OFFSET(reg_THREAD)
350 lwz reg_BSP,THREAD_BINDING_STACK_POINTER_OFFSET(reg_THREAD)
351 lwz reg_CSP,THREAD_CONTROL_STACK_POINTER_OFFSET(reg_THREAD)
352 lwz reg_OCFP,THREAD_CONTROL_FRAME_POINTER_OFFSET(reg_THREAD)
354 store(reg_ZERO,reg_NL4,CSYMBOL(foreign_function_call_active))
355 load(reg_BSP,CSYMBOL(current_binding_stack_pointer))
356 load(reg_CSP,CSYMBOL(current_control_stack_pointer))
357 load(reg_OCFP,CSYMBOL(current_control_frame_pointer))
359 /* This is important for CHENEYGC: It's the allocation
360 * pointer. It's also important for ROOM on GENCGC:
361 * It's a pointer to the end of dynamic space, used to
362 * determine where to stop in MAP-ALLOCATED-OBJECTS. */
363 load(reg_NL4,CSYMBOL(dynamic_space_free_pointer))
364 add reg_ALLOC,reg_ALLOC,reg_NL4
366 /* No longer atomic, and check for interrupt */
367 subi reg_ALLOC,reg_ALLOC,flag_PseudoAtomic
368 andi. reg_NL3, reg_ALLOC, flag_PseudoAtomicInterrupted
371 /* Pass in the arguments */
374 mr reg_LEXENV,reg_NL0
375 lwz reg_A0,0(reg_CFP)
376 lwz reg_A1,4(reg_CFP)
377 lwz reg_A2,8(reg_CFP)
378 lwz reg_A3,12(reg_CFP)
381 #ifdef LISP_FEATURE_DARWIN
382 lis reg_LRA,ha16(lra)
383 addi reg_LRA,reg_LRA,lo16(lra)
386 ori reg_LRA,reg_LRA,lra@l
388 addi reg_LRA,reg_LRA,OTHER_POINTER_LOWTAG
390 /* Function is an indirect closure */
391 lwz reg_CODE,SIMPLE_FUN_SELF_OFFSET(reg_LEXENV)
392 addi reg_LIP,reg_CODE,SIMPLE_FUN_CODE_OFFSET
394 slwi reg_NARGS,reg_NL2,2
399 .long RETURN_PC_HEADER_WIDETAG
401 /* Blow off any extra values. */
405 /* Return the one value. */
409 /* Turn on pseudo-atomic */
410 la reg_ALLOC,flag_PseudoAtomic(reg_ALLOC)
412 #if defined(LISP_FEATURE_SB_THREAD)
413 /* Store lisp state */
414 stw reg_BSP,THREAD_BINDING_STACK_POINTER_OFFSET(reg_THREAD)
415 stw reg_CSP,THREAD_CONTROL_STACK_POINTER_OFFSET(reg_THREAD)
416 stw reg_CFP,THREAD_CONTROL_FRAME_POINTER_OFFSET(reg_THREAD)
418 /* No longer in Lisp. */
419 stw reg_ALLOC,THREAD_FOREIGN_FUNCTION_CALL_ACTIVE_OFFSET(reg_THREAD)
421 /* Store lisp state */
422 clrrwi reg_NL1,reg_ALLOC,3
423 store(reg_NL1,reg_NL2,CSYMBOL(dynamic_space_free_pointer))
424 /* store(reg_POLL,reg_NL2,poll_flag) */
425 /* load(reg_NL2,current_thread) */
426 store(reg_BSP,reg_NL2,CSYMBOL(current_binding_stack_pointer))
427 store(reg_CSP,reg_NL2,CSYMBOL(current_control_stack_pointer))
428 store(reg_CFP,reg_NL2,CSYMBOL(current_control_frame_pointer))
429 /* load(reg_POLL,saver2) */
431 /* No longer in Lisp. */
432 store(reg_NL1,reg_NL2,CSYMBOL(foreign_function_call_active))
435 /* Check for interrupt */
436 subi reg_ALLOC, reg_ALLOC, flag_PseudoAtomic
437 andi. reg_NL3, reg_ALLOC, flag_PseudoAtomicInterrupted
443 SET_SIZE(call_into_lisp)
446 GFUNCDEF(call_into_c)
447 /* We're kind of low on unboxed, non-dedicated registers here:
448 most of the unboxed registers may have outgoing C args in them.
449 CFUNC is going to have to go in the CTR in a moment, anyway
450 so we'll free it up soon. reg_NFP is preserved by lisp if it
451 has a meaningful value in it, so we can use it. reg_NARGS is
452 free when it's not holding a copy of the "real" reg_NL3, which
453 gets tied up by the pseudo-atomic mechanism */
456 /* Build a lisp stack frame */
459 la reg_CSP,32(reg_CSP)
460 stw reg_OCFP,0(reg_CFP)
461 stw reg_CODE,8(reg_CFP)
462 /* The pseudo-atomic mechanism wants to use reg_NL3, but that
463 may be an outgoing C argument. Copy reg_NL3 to something that's
464 unboxed and -not- one of the C argument registers */
467 /* Turn on pseudo-atomic */
468 la reg_ALLOC,flag_PseudoAtomic(reg_ALLOC)
470 /* Convert the return address to an offset and save it on the stack. */
471 sub reg_NFP,reg_LIP,reg_CODE
472 la reg_NFP,OTHER_POINTER_LOWTAG(reg_NFP)
473 stw reg_NFP,4(reg_CFP)
475 #ifdef LISP_FEATURE_SB_THREAD
476 /* Store Lisp state */
477 stw reg_BSP,THREAD_BINDING_STACK_POINTER_OFFSET(reg_THREAD)
478 stw reg_CSP,THREAD_CONTROL_STACK_POINTER_OFFSET(reg_THREAD)
479 stw reg_CFP,THREAD_CONTROL_FRAME_POINTER_OFFSET(reg_THREAD)
481 /* No longer in Lisp. */
482 stw reg_CSP,THREAD_FOREIGN_FUNCTION_CALL_ACTIVE_OFFSET(reg_THREAD)
484 /* Store Lisp state */
485 clrrwi reg_NFP,reg_ALLOC,3
486 store(reg_NFP,reg_CFUNC,CSYMBOL(dynamic_space_free_pointer))
487 /* load(reg_CFUNC,current_thread) */
489 store(reg_BSP,reg_CFUNC,CSYMBOL(current_binding_stack_pointer))
490 store(reg_CSP,reg_CFUNC,CSYMBOL(current_control_stack_pointer))
491 store(reg_CFP,reg_CFUNC,CSYMBOL(current_control_frame_pointer))
493 /* No longer in Lisp */
494 store(reg_CSP,reg_CFUNC,CSYMBOL(foreign_function_call_active))
496 /* load(reg_POLL,saver2) */
497 /* Disable pseudo-atomic; check pending interrupt */
498 subi reg_ALLOC, reg_ALLOC, flag_PseudoAtomic
499 andi. reg_NL3, reg_ALLOC, flag_PseudoAtomicInterrupted
504 #ifdef LISP_FEATURE_DARWIN
505 /* PowerOpen (i.e. OS X) requires the callee address in r12
506 (a.k.a. CFUNC), so move it back there, too. */
512 /* Re-establish NIL */
513 #ifdef LISP_FEATURE_DARWIN
514 lis reg_NULL,hi16(NIL)
515 ori reg_NULL,reg_NULL,lo16(NIL)
518 ori reg_NULL,reg_NULL,NIL@l
523 /* If we GC'ed during the FF code (as the result of a callback ?)
524 the tagged lisp registers may now contain garbage (since the
525 registers were saved by C and not seen by the GC.) Put something
526 harmless in all such registers before allowing an interrupt */
530 /* reg_OCFP was pointing to a control stack frame & was preserved by C */
538 #if !defined(LISP_FEATURE_SB_THREAD)
539 /* reg_L2 is our TLS block pointer. */
545 li reg_ALLOC,flag_PseudoAtomic
547 #if defined(LISP_FEATURE_SB_THREAD)
548 /* No longer in foreign function call. */
549 stw reg_ZERO,THREAD_FOREIGN_FUNCTION_CALL_ACTIVE_OFFSET(reg_THREAD)
551 /* The binding stack pointer isn't preserved by C. */
552 lwz reg_BSP,THREAD_BINDING_STACK_POINTER_OFFSET(reg_THREAD)
554 /* No long in foreign function call. */
555 store(reg_ZERO,reg_NL2,CSYMBOL(foreign_function_call_active))
557 /* The free pointer may have moved */
560 /* The BSP wasn't preserved by C, so load it */
561 load(reg_BSP,CSYMBOL(current_binding_stack_pointer))
563 /* This is important for CHENEYGC: It's the allocation
564 * pointer. It's also important for ROOM on GENCGC:
565 * It's a pointer to the end of dynamic space, used to
566 * determine where to stop in MAP-ALLOCATED-OBJECTS. */
567 load(reg_NL4,CSYMBOL(dynamic_space_free_pointer))
568 add reg_ALLOC,reg_ALLOC,reg_NL4
570 /* Other lisp stack/frame pointers were preserved by C.
571 I can't imagine why they'd have moved */
573 /* Get the return address back. */
574 lwz reg_LIP,4(reg_CFP)
575 lwz reg_CODE,8(reg_CFP)
576 add reg_LIP,reg_CODE,reg_LIP
577 la reg_LIP,-OTHER_POINTER_LOWTAG(reg_LIP)
579 /* No longer atomic */
580 subi reg_ALLOC, reg_ALLOC, flag_PseudoAtomic
581 andi. reg_NL3, reg_ALLOC, flag_PseudoAtomicInterrupted
586 /* Reset the lisp stack. */
590 /* And back into Lisp. */
593 SET_SIZE(call_into_c)
595 GFUNCDEF(xundefined_tramp)
596 .globl CSYMBOL(undefined_tramp)
597 .long SIMPLE_FUN_HEADER_WIDETAG /* header */
598 .long CSYMBOL(undefined_tramp) - SIMPLE_FUN_CODE_OFFSET /* self */
601 .long NIL /* arglist */
604 CSYMBOL(undefined_tramp):
605 /* Point reg_CODE to the header and tag it as function, since
606 the debugger regards a function pointer in reg_CODE which
607 doesn't point to a code object as undefined function. */
608 bcl 20,31,.+4 /* get address of the next instruction */
609 mflr reg_CODE /* header 1 extra word back from here */
610 addi reg_CODE,reg_CODE,-(SIMPLE_FUN_CODE_OFFSET+4)
612 twllei reg_ZERO,trap_Cerror
614 .byte UNDEFINED_FUN_ERROR
615 .byte 254, sc_DescriptorReg+0x40, 1 /* 140? sparc says sc_descriptorReg */
616 /* This stuff is for the continuable error. I don't think there's
617 * any support for it on the lisp side */
619 1: lwz reg_CODE,FDEFN_RAW_ADDR_OFFSET(reg_FDEFN)
620 la reg_LIP,SIMPLE_FUN_CODE_OFFSET(reg_CODE)
626 SET_SIZE(xundefined_tramp)
628 GFUNCDEF(xclosure_tramp)
629 .globl CSYMBOL(closure_tramp)
630 CSYMBOL(closure_tramp):
631 lwz reg_LEXENV,FDEFN_FUN_OFFSET(reg_FDEFN)
632 lwz reg_CODE,CLOSURE_FUN_OFFSET(reg_LEXENV)
633 la reg_LIP,SIMPLE_FUN_CODE_OFFSET(reg_CODE)
637 SET_SIZE(xclosure_tramp)
639 GFUNCDEF(xfuncallable_instance_tramp)
640 .globl CSYMBOL(funcallable_instance_tramp)
641 .long SIMPLE_FUN_HEADER_WIDETAG
642 CSYMBOL(funcallable_instance_tramp) = . + 1
643 .long CSYMBOL(funcallable_instance_tramp)
649 lwz reg_LEXENV,FUNCALLABLE_INSTANCE_FUNCTION_OFFSET(reg_LEXENV)
650 lwz reg_FDEFN,CLOSURE_FUN_OFFSET(reg_LEXENV)
651 addi reg_LIP,reg_FDEFN,SIMPLE_FUN_CODE_OFFSET
654 SET_SIZE(funcallable_instance_tramp)
656 /* The fun_end_breakpoint support here is considered by the
657 authors of the other $ARCH-assem.S files to be magic, and it
658 is. It is a small fragment of code that is copied into a heap
659 code-object when needed, and contains an LRA object, code to
660 convert a single-value return to unknown-values format, and a
661 trap_FunEndBreakpoint. */
662 GFUNCDEF(fun_end_breakpoint_guts)
663 .globl CSYMBOL(fun_end_breakpoint_trap)
664 .globl CSYMBOL(fun_end_breakpoint_end)
666 /* Due to pointer verification in MAKE-LISP-OBJ, this must
667 include its header data (the offset from the start of the
668 code-object to the LRA). The code-object header is five
669 words, there are two words of constants, and the instruction
670 space is doubleword-aligned, making an offset of eight.
671 This is header data for a widetag, so shift left eight bits
673 .long RETURN_PC_HEADER_WIDETAG + 0x800
675 /* We are receiving unknown multiple values, thus must deal
676 with the single-value and multiple-value cases separately. */
677 b fun_end_breakpoint_multiple_values
680 /* Compute the correct value for reg_CODE based on the LRA.
681 This is a "simple" matter of subtracting a constant from
682 reg_LRA (where the LRA is stored by the return sequence) to
683 obtain a tagged pointer to the enclosing code component. Both
684 values are tagged OTHER_POINTER_LOWTAG, so we just have to
685 account for the eight words (see calculation for
686 RETURN_PC_HEADER_WIDETAG, above) between the two addresses.
687 Restoring reg_CODE doesn't appear to be strictly necessary
688 here, but let's observe the niceties.*/
689 addi reg_CODE, reg_LRA, -32
691 /* Multiple values are stored relative to reg_OCFP, which we
692 set to be the current top-of-stack. */
695 /* Reserve a save location for the one value we have. */
696 addi reg_CSP, reg_CSP, 4
698 /* Record the number of values we have as a FIXNUM. */
701 /* Blank the remaining arg-passing registers. */
706 /* And branch to our trap. */
707 b CSYMBOL(fun_end_breakpoint_trap)
709 fun_end_breakpoint_multiple_values:
710 /* Compute the correct value for reg_CODE. See the
711 explanation for the single-value case, above. */
712 addi reg_CODE, reg_LRA, -32
714 /* The actual magic trap. */
715 CSYMBOL(fun_end_breakpoint_trap):
716 twllei reg_ZERO, trap_FunEndBreakpoint
718 /* Finally, the debugger needs to know where the end of the
719 fun_end_breakpoint_guts are, so that it may calculate its size
720 in order to populate out a suitably-sized code object. */
721 CSYMBOL(fun_end_breakpoint_end):
722 SET_SIZE(fun_end_breakpoint_guts)
725 GFUNCDEF(ppc_flush_cache_line)
732 SET_SIZE(ppc_flush_cache_line)
734 GFUNCDEF(do_pending_interrupt)
735 twllei reg_ZERO, trap_PendingInterrupt
737 /* King Nato's branch has a nop here. Do we need this? */
738 SET_SIZE(do_pending_interrupt)
740 #if defined LISP_FEATURE_GENCGC
743 stfd FREG(1), 0(REG(3))
744 stfd FREG(2), 8(REG(3))
745 stfd FREG(3), 16(REG(3))
746 stfd FREG(4), 24(REG(3))
747 stfd FREG(5), 32(REG(3))
748 stfd FREG(6), 40(REG(3))
749 stfd FREG(7), 48(REG(3))
750 stfd FREG(8), 56(REG(3))
751 stfd FREG(9), 64(REG(3))
752 stfd FREG(10), 72(REG(3))
753 stfd FREG(11), 80(REG(3))
754 stfd FREG(12), 88(REG(3))
755 stfd FREG(13), 96(REG(3))
756 stfd FREG(14), 104(REG(3))
757 stfd FREG(15), 112(REG(3))
758 stfd FREG(16), 120(REG(3))
759 stfd FREG(17), 128(REG(3))
760 stfd FREG(18), 136(REG(3))
761 stfd FREG(19), 144(REG(3))
762 stfd FREG(20), 152(REG(3))
763 stfd FREG(21), 160(REG(3))
764 stfd FREG(22), 168(REG(3))
765 stfd FREG(23), 176(REG(3))
766 stfd FREG(24), 184(REG(3))
767 stfd FREG(25), 192(REG(3))
768 stfd FREG(26), 200(REG(3))
769 stfd FREG(27), 208(REG(3))
770 stfd FREG(28), 216(REG(3))
771 stfd FREG(29), 224(REG(3))
772 stfd FREG(30), 232(REG(3))
773 stfd FREG(31), 240(REG(3))
777 GFUNCDEF(fpu_restore)
778 lfd FREG(1), 0(REG(3))
779 lfd FREG(2), 8(REG(3))
780 lfd FREG(3), 16(REG(3))
781 lfd FREG(4), 24(REG(3))
782 lfd FREG(5), 32(REG(3))
783 lfd FREG(6), 40(REG(3))
784 lfd FREG(7), 48(REG(3))
785 lfd FREG(8), 56(REG(3))
786 lfd FREG(9), 64(REG(3))
787 lfd FREG(10), 72(REG(3))
788 lfd FREG(11), 80(REG(3))
789 lfd FREG(12), 88(REG(3))
790 lfd FREG(13), 96(REG(3))
791 lfd FREG(14), 104(REG(3))
792 lfd FREG(15), 112(REG(3))
793 lfd FREG(16), 120(REG(3))
794 lfd FREG(17), 128(REG(3))
795 lfd FREG(18), 136(REG(3))
796 lfd FREG(19), 144(REG(3))
797 lfd FREG(20), 152(REG(3))
798 lfd FREG(21), 160(REG(3))
799 lfd FREG(22), 168(REG(3))
800 lfd FREG(23), 176(REG(3))
801 lfd FREG(24), 184(REG(3))
802 lfd FREG(25), 192(REG(3))
803 lfd FREG(26), 200(REG(3))
804 lfd FREG(27), 208(REG(3))
805 lfd FREG(28), 216(REG(3))
806 lfd FREG(29), 224(REG(3))
807 lfd FREG(30), 232(REG(3))
808 lfd FREG(31), 240(REG(3))
810 SET_SIZE(fpu_restore)