| 180 |
|
isync |
| 181 |
|
lwarx r5,0,r3 |
| 182 |
|
cmpi 0,r5,0x0000 |
| 183 |
< |
beq 1f |
| 183 |
> |
bne 1f |
| 184 |
|
stwcx. r4,0,r3 |
| 185 |
|
bne- 0b |
| 186 |
|
1: isync |
| 344 |
|
lwz r0,56+19*4+18*8+4(r1) |
| 345 |
|
mtlr r0 |
| 346 |
|
addi r1,r1,56+19*4+18*8 |
| 347 |
+ |
RESTORE_SYSTEM_R2 |
| 348 |
+ |
RESTORE_SYSTEM_R13 |
| 349 |
|
blr |
| 350 |
|
|
| 351 |
|
|
| 382 |
|
mfxer r0 |
| 383 |
|
stw r0,16(r1) |
| 384 |
|
stw r2,12(r1) |
| 385 |
< |
stwu r1,-(24+16*4+15*8)(r1) |
| 384 |
< |
RESTORE_SYSTEM_R2 |
| 385 |
> |
stwu r1,-(56+16*4+15*8)(r1) |
| 386 |
|
|
| 387 |
|
// Save 68k registers (M68kRegisters) |
| 388 |
< |
stw r8,24+0*4(r1) // d[0]..d[7] |
| 389 |
< |
stw r9,24+1*4(r1) |
| 390 |
< |
stw r10,24+2*4(r1) |
| 391 |
< |
stw r11,24+3*4(r1) |
| 392 |
< |
stw r12,24+4*4(r1) |
| 393 |
< |
stw r13,24+5*4(r1) |
| 394 |
< |
stw r14,24+6*4(r1) |
| 395 |
< |
stw r15,24+7*4(r1) |
| 396 |
< |
stw r16,24+8*4(r1) // a[0]..a[7] |
| 397 |
< |
stw r17,24+9*4(r1) |
| 398 |
< |
stw r18,24+10*4(r1) |
| 399 |
< |
stw r19,24+11*4(r1) |
| 400 |
< |
stw r20,24+12*4(r1) |
| 401 |
< |
stw r21,24+13*4(r1) |
| 402 |
< |
stw r22,24+14*4(r1) |
| 403 |
< |
stw r3,24+15*4(r1) |
| 404 |
< |
stfd f0,24+16*4+0*8(r1) |
| 405 |
< |
stfd f1,24+16*4+1*8(r1) |
| 406 |
< |
stfd f2,24+16*4+2*8(r1) |
| 407 |
< |
stfd f3,24+16*4+3*8(r1) |
| 408 |
< |
stfd f4,24+16*4+4*8(r1) |
| 409 |
< |
stfd f5,24+16*4+5*8(r1) |
| 410 |
< |
stfd f6,24+16*4+6*8(r1) |
| 411 |
< |
stfd f7,24+16*4+7*8(r1) |
| 388 |
> |
stw r8,56+0*4(r1) // d[0]..d[7] |
| 389 |
> |
stw r9,56+1*4(r1) |
| 390 |
> |
stw r10,56+2*4(r1) |
| 391 |
> |
stw r11,56+3*4(r1) |
| 392 |
> |
stw r12,56+4*4(r1) |
| 393 |
> |
stw r13,56+5*4(r1) |
| 394 |
> |
stw r14,56+6*4(r1) |
| 395 |
> |
stw r15,56+7*4(r1) |
| 396 |
> |
stw r16,56+8*4(r1) // a[0]..a[7] |
| 397 |
> |
stw r17,56+9*4(r1) |
| 398 |
> |
stw r18,56+10*4(r1) |
| 399 |
> |
stw r19,56+11*4(r1) |
| 400 |
> |
stw r20,56+12*4(r1) |
| 401 |
> |
stw r21,56+13*4(r1) |
| 402 |
> |
stw r22,56+14*4(r1) |
| 403 |
> |
stw r3,56+15*4(r1) |
| 404 |
> |
stfd f0,56+16*4+0*8(r1) |
| 405 |
> |
stfd f1,56+16*4+1*8(r1) |
| 406 |
> |
stfd f2,56+16*4+2*8(r1) |
| 407 |
> |
stfd f3,56+16*4+3*8(r1) |
| 408 |
> |
stfd f4,56+16*4+4*8(r1) |
| 409 |
> |
stfd f5,56+16*4+5*8(r1) |
| 410 |
> |
stfd f6,56+16*4+6*8(r1) |
| 411 |
> |
stfd f7,56+16*4+7*8(r1) |
| 412 |
|
mffs f0 |
| 413 |
< |
stfd f8,24+16*4+8*8(r1) |
| 414 |
< |
stfd f9,24+16*4+9*8(r1) |
| 415 |
< |
stfd f10,24+16*4+10*8(r1) |
| 416 |
< |
stfd f11,24+16*4+11*8(r1) |
| 417 |
< |
stfd f12,24+16*4+12*8(r1) |
| 418 |
< |
stfd f13,24+16*4+13*8(r1) |
| 419 |
< |
stfd f0,24+16*4+14*8(r1) |
| 413 |
> |
stfd f8,56+16*4+8*8(r1) |
| 414 |
> |
stfd f9,56+16*4+9*8(r1) |
| 415 |
> |
stfd f10,56+16*4+10*8(r1) |
| 416 |
> |
stfd f11,56+16*4+11*8(r1) |
| 417 |
> |
stfd f12,56+16*4+12*8(r1) |
| 418 |
> |
stfd f13,56+16*4+13*8(r1) |
| 419 |
> |
stfd f0,56+16*4+14*8(r1) |
| 420 |
|
|
| 421 |
|
// Execute native routine |
| 422 |
|
RESTORE_SYSTEM_R2 |
| 423 |
|
RESTORE_SYSTEM_R13 |
| 424 |
< |
addi r3,r1,24 |
| 424 |
> |
addi r3,r1,56 |
| 425 |
|
mr r4,r24 |
| 426 |
|
bl C_SYMBOL_NAME(EmulOp) |
| 427 |
|
|
| 428 |
|
// Restore 68k registers (M68kRegisters) |
| 429 |
< |
lwz r8,24+0*4(r1) // d[0]..d[7] |
| 430 |
< |
lwz r9,24+1*4(r1) |
| 431 |
< |
lwz r10,24+2*4(r1) |
| 432 |
< |
lwz r11,24+3*4(r1) |
| 433 |
< |
lwz r12,24+4*4(r1) |
| 434 |
< |
lwz r13,24+5*4(r1) |
| 435 |
< |
lwz r14,24+6*4(r1) |
| 436 |
< |
lwz r15,24+7*4(r1) |
| 437 |
< |
lwz r16,24+8*4(r1) // a[0]..a[7] |
| 438 |
< |
lwz r17,24+9*4(r1) |
| 439 |
< |
lwz r18,24+10*4(r1) |
| 440 |
< |
lwz r19,24+11*4(r1) |
| 441 |
< |
lwz r20,24+12*4(r1) |
| 442 |
< |
lwz r21,24+13*4(r1) |
| 443 |
< |
lwz r22,24+14*4(r1) |
| 444 |
< |
lwz r3,24+15*4(r1) |
| 445 |
< |
lfd f13,24+16*4+14*8(r1) |
| 446 |
< |
lfd f0,24+16*4+0*8(r1) |
| 447 |
< |
lfd f1,24+16*4+1*8(r1) |
| 448 |
< |
lfd f2,24+16*4+2*8(r1) |
| 449 |
< |
lfd f3,24+16*4+3*8(r1) |
| 450 |
< |
lfd f4,24+16*4+4*8(r1) |
| 451 |
< |
lfd f5,24+16*4+5*8(r1) |
| 452 |
< |
lfd f6,24+16*4+6*8(r1) |
| 453 |
< |
lfd f7,24+16*4+7*8(r1) |
| 429 |
> |
lwz r8,56+0*4(r1) // d[0]..d[7] |
| 430 |
> |
lwz r9,56+1*4(r1) |
| 431 |
> |
lwz r10,56+2*4(r1) |
| 432 |
> |
lwz r11,56+3*4(r1) |
| 433 |
> |
lwz r12,56+4*4(r1) |
| 434 |
> |
lwz r13,56+5*4(r1) |
| 435 |
> |
lwz r14,56+6*4(r1) |
| 436 |
> |
lwz r15,56+7*4(r1) |
| 437 |
> |
lwz r16,56+8*4(r1) // a[0]..a[7] |
| 438 |
> |
lwz r17,56+9*4(r1) |
| 439 |
> |
lwz r18,56+10*4(r1) |
| 440 |
> |
lwz r19,56+11*4(r1) |
| 441 |
> |
lwz r20,56+12*4(r1) |
| 442 |
> |
lwz r21,56+13*4(r1) |
| 443 |
> |
lwz r22,56+14*4(r1) |
| 444 |
> |
lwz r3,56+15*4(r1) |
| 445 |
> |
lfd f13,56+16*4+14*8(r1) |
| 446 |
> |
lfd f0,56+16*4+0*8(r1) |
| 447 |
> |
lfd f1,56+16*4+1*8(r1) |
| 448 |
> |
lfd f2,56+16*4+2*8(r1) |
| 449 |
> |
lfd f3,56+16*4+3*8(r1) |
| 450 |
> |
lfd f4,56+16*4+4*8(r1) |
| 451 |
> |
lfd f5,56+16*4+5*8(r1) |
| 452 |
> |
lfd f6,56+16*4+6*8(r1) |
| 453 |
> |
lfd f7,56+16*4+7*8(r1) |
| 454 |
|
mtfsf 0xff,f13 |
| 455 |
< |
lfd f8,24+16*4+8*8(r1) |
| 456 |
< |
lfd f9,24+16*4+9*8(r1) |
| 457 |
< |
lfd f10,24+16*4+10*8(r1) |
| 458 |
< |
lfd f11,24+16*4+11*8(r1) |
| 459 |
< |
lfd f12,24+16*4+12*8(r1) |
| 460 |
< |
lfd f13,24+16*4+13*8(r1) |
| 455 |
> |
lfd f8,56+16*4+8*8(r1) |
| 456 |
> |
lfd f9,56+16*4+9*8(r1) |
| 457 |
> |
lfd f10,56+16*4+10*8(r1) |
| 458 |
> |
lfd f11,56+16*4+11*8(r1) |
| 459 |
> |
lfd f12,56+16*4+12*8(r1) |
| 460 |
> |
lfd f13,56+16*4+13*8(r1) |
| 461 |
|
|
| 462 |
|
// Delete PowerPC stack frame |
| 463 |
< |
lwz r2,24+16*4+15*8+12(r1) |
| 464 |
< |
lwz r0,24+16*4+15*8+16(r1) |
| 463 |
> |
lwz r2,56+16*4+15*8+12(r1) |
| 464 |
> |
lwz r0,56+16*4+15*8+16(r1) |
| 465 |
|
mtxer r0 |
| 466 |
< |
lwz r0,24+16*4+15*8+4(r1) |
| 466 |
> |
lwz r0,56+16*4+15*8+4(r1) |
| 467 |
|
mtcrf 0xff,r0 |
| 468 |
|
mr r1,r3 |
| 469 |
|
|
| 489 |
|
stw r1,XLM_EMUL_RETURN_STACK(0) |
| 490 |
|
|
| 491 |
|
// Preset registers for ROM boot routine |
| 492 |
< |
lis r3,0x40b0 // Pointer to ROM boot structure |
| 493 |
< |
ori r3,r3,0xd000 |
| 492 |
> |
lis r3,ASM_HA16(C_SYMBOL_NAME(ROMBase)) // Pointer to ROM boot structure: |
| 493 |
> |
lwz r3,ASM_LO16(C_SYMBOL_NAME(ROMBase))(r3) // r3 = ROMBase + 0x30d000 |
| 494 |
> |
addis r3,r3,ASM_HA16(0x30d000) |
| 495 |
> |
addi r3,r3,ASM_LO16(0x30d000) |
| 496 |
|
|
| 497 |
|
// 68k emulator is now active |
| 498 |
|
li r0,MODE_68K |
| 598 |
|
ASM_MACRO_END |
| 599 |
|
|
| 600 |
|
ASM_MACRO_START epilog |
| 598 |
– |
RESTORE_SYSTEM_R2 |
| 599 |
– |
RESTORE_SYSTEM_R13 |
| 601 |
|
lwz r0,64+4(r1) |
| 602 |
|
mtlr r0 |
| 603 |
|
addi r1,r1,64 |
| 604 |
+ |
RESTORE_SYSTEM_R2 |
| 605 |
+ |
RESTORE_SYSTEM_R13 |
| 606 |
|
blr |
| 607 |
|
ASM_MACRO_END |
| 608 |
|
|
| 711 |
|
* Native resource manager patches |
| 712 |
|
*/ |
| 713 |
|
|
| 714 |
< |
ASM_GLOBAL_DIRECTIVE C_SYMBOL_NAME(get_resource) |
| 712 |
< |
C_SYMBOL_NAME(get_resource): |
| 714 |
> |
ASM_MACRO_START do_get_resource ASM_MACRO_ARG0_DEF |
| 715 |
|
// Create stack frame |
| 716 |
|
mflr r0 |
| 717 |
|
stw r0,8(r1) |
| 722 |
|
stw r4,56+4(r1) |
| 723 |
|
|
| 724 |
|
// Call old routine |
| 725 |
< |
lwz r0,XLM_GET_RESOURCE(0) |
| 725 |
> |
lwz r0,ASM_MACRO_ARG0(0) |
| 726 |
|
lwz r2,XLM_RES_LIB_TOC(0) |
| 727 |
|
mtctr r0 |
| 728 |
|
bctrl |
| 727 |
– |
RESTORE_SYSTEM_R2 |
| 729 |
|
stw r3,56+8(r1) // Save handle |
| 730 |
|
|
| 731 |
|
// Call CheckLoad |
| 732 |
+ |
RESTORE_SYSTEM_R2 |
| 733 |
+ |
RESTORE_SYSTEM_R13 |
| 734 |
|
lwz r3,56(r1) |
| 735 |
|
lha r4,56+6(r1) |
| 736 |
|
lwz r5,56+8(r1) |
| 742 |
|
mtlr r0 |
| 743 |
|
addi r1,r1,56+12 |
| 744 |
|
blr |
| 745 |
+ |
ASM_MACRO_END |
| 746 |
+ |
|
| 747 |
+ |
ASM_GLOBAL_DIRECTIVE C_SYMBOL_NAME(get_resource) |
| 748 |
+ |
C_SYMBOL_NAME(get_resource): |
| 749 |
+ |
do_get_resource XLM_GET_RESOURCE |
| 750 |
|
|
| 751 |
|
ASM_GLOBAL_DIRECTIVE C_SYMBOL_NAME(get_1_resource) |
| 752 |
|
C_SYMBOL_NAME(get_1_resource): |
| 753 |
< |
// Create stack frame |
| 746 |
< |
mflr r0 |
| 747 |
< |
stw r0,8(r1) |
| 748 |
< |
stwu r1,-(56+12)(r1) |
| 749 |
< |
|
| 750 |
< |
// Save type/ID |
| 751 |
< |
stw r3,56(r1) |
| 752 |
< |
stw r4,56+4(r1) |
| 753 |
< |
|
| 754 |
< |
// Call old routine |
| 755 |
< |
lwz r0,XLM_GET_1_RESOURCE(0) |
| 756 |
< |
lwz r2,XLM_RES_LIB_TOC(0) |
| 757 |
< |
mtctr r0 |
| 758 |
< |
bctrl |
| 759 |
< |
RESTORE_SYSTEM_R2 |
| 760 |
< |
stw r3,56+8(r1) // Save handle |
| 761 |
< |
|
| 762 |
< |
// Call CheckLoad |
| 763 |
< |
lwz r3,56(r1) |
| 764 |
< |
lha r4,56+6(r1) |
| 765 |
< |
lwz r5,56+8(r1) |
| 766 |
< |
bl C_SYMBOL_NAME(check_load_invoc) |
| 767 |
< |
lwz r3,56+8(r1) // Restore handle |
| 768 |
< |
|
| 769 |
< |
// Return to caller |
| 770 |
< |
lwz r0,56+12+8(r1) |
| 771 |
< |
mtlr r0 |
| 772 |
< |
addi r1,r1,56+12 |
| 773 |
< |
blr |
| 753 |
> |
do_get_resource XLM_GET_1_RESOURCE |
| 754 |
|
|
| 755 |
|
ASM_GLOBAL_DIRECTIVE C_SYMBOL_NAME(get_ind_resource) |
| 756 |
|
C_SYMBOL_NAME(get_ind_resource): |
| 757 |
< |
// Create stack frame |
| 778 |
< |
mflr r0 |
| 779 |
< |
stw r0,8(r1) |
| 780 |
< |
stwu r1,-(56+12)(r1) |
| 781 |
< |
|
| 782 |
< |
// Save type/index |
| 783 |
< |
stw r3,56(r1) |
| 784 |
< |
stw r4,56+4(r1) |
| 785 |
< |
|
| 786 |
< |
// Call old routine |
| 787 |
< |
lwz r0,XLM_GET_IND_RESOURCE(0) |
| 788 |
< |
lwz r2,XLM_RES_LIB_TOC(0) |
| 789 |
< |
mtctr r0 |
| 790 |
< |
bctrl |
| 791 |
< |
RESTORE_SYSTEM_R2 |
| 792 |
< |
stw r3,56+8(r1) // Save handle |
| 793 |
< |
|
| 794 |
< |
// Call CheckLoad |
| 795 |
< |
lwz r3,56(r1) |
| 796 |
< |
lha r4,56+6(r1) |
| 797 |
< |
lwz r5,56+8(r1) |
| 798 |
< |
bl C_SYMBOL_NAME(check_load_invoc) |
| 799 |
< |
lwz r3,56+8(r1) // Restore handle |
| 800 |
< |
|
| 801 |
< |
// Return to caller |
| 802 |
< |
lwz r0,56+12+8(r1) |
| 803 |
< |
mtlr r0 |
| 804 |
< |
addi r1,r1,56+12 |
| 805 |
< |
blr |
| 757 |
> |
do_get_resource XLM_GET_IND_RESOURCE |
| 758 |
|
|
| 759 |
|
ASM_GLOBAL_DIRECTIVE C_SYMBOL_NAME(get_1_ind_resource) |
| 760 |
|
C_SYMBOL_NAME(get_1_ind_resource): |
| 761 |
< |
// Create stack frame |
| 810 |
< |
mflr r0 |
| 811 |
< |
stw r0,8(r1) |
| 812 |
< |
stwu r1,-(56+12)(r1) |
| 813 |
< |
|
| 814 |
< |
// Save type/index |
| 815 |
< |
stw r3,56(r1) |
| 816 |
< |
stw r4,56+4(r1) |
| 817 |
< |
|
| 818 |
< |
// Call old routine |
| 819 |
< |
lwz r0,XLM_GET_1_IND_RESOURCE(0) |
| 820 |
< |
lwz r2,XLM_RES_LIB_TOC(0) |
| 821 |
< |
mtctr r0 |
| 822 |
< |
bctrl |
| 823 |
< |
RESTORE_SYSTEM_R2 |
| 824 |
< |
stw r3,56+8(r1) // Save handle |
| 825 |
< |
|
| 826 |
< |
// Call CheckLoad |
| 827 |
< |
lwz r3,56(r1) |
| 828 |
< |
lha r4,56+6(r1) |
| 829 |
< |
lwz r5,56+8(r1) |
| 830 |
< |
bl C_SYMBOL_NAME(check_load_invoc) |
| 831 |
< |
lwz r3,56+8(r1) // Restore handle |
| 832 |
< |
|
| 833 |
< |
// Return to caller |
| 834 |
< |
lwz r0,56+12+8(r1) |
| 835 |
< |
mtlr r0 |
| 836 |
< |
addi r1,r1,56+12 |
| 837 |
< |
blr |
| 761 |
> |
do_get_resource XLM_GET_1_IND_RESOURCE |
| 762 |
|
|
| 763 |
|
ASM_GLOBAL_DIRECTIVE C_SYMBOL_NAME(r_get_resource) |
| 764 |
|
C_SYMBOL_NAME(r_get_resource): |
| 765 |
+ |
do_get_resource XLM_R_GET_RESOURCE |
| 766 |
+ |
|
| 767 |
+ |
ASM_MACRO_START do_get_named_resource ASM_MACRO_ARG0_DEF |
| 768 |
|
// Create stack frame |
| 769 |
|
mflr r0 |
| 770 |
|
stw r0,8(r1) |
| 775 |
|
stw r4,56+4(r1) |
| 776 |
|
|
| 777 |
|
// Call old routine |
| 778 |
< |
lwz r0,XLM_R_GET_RESOURCE(0) |
| 778 |
> |
lwz r0,ASM_MACRO_ARG0(0) |
| 779 |
|
lwz r2,XLM_RES_LIB_TOC(0) |
| 780 |
|
mtctr r0 |
| 781 |
|
bctrl |
| 855 |
– |
RESTORE_SYSTEM_R2 |
| 782 |
|
stw r3,56+8(r1) // Save handle |
| 783 |
|
|
| 784 |
|
// Call CheckLoad |
| 785 |
+ |
RESTORE_SYSTEM_R2 |
| 786 |
+ |
RESTORE_SYSTEM_R13 |
| 787 |
|
lwz r3,56(r1) |
| 788 |
< |
lha r4,56+6(r1) |
| 788 |
> |
lwz r4,56+4(r1) |
| 789 |
|
lwz r5,56+8(r1) |
| 790 |
< |
bl C_SYMBOL_NAME(check_load_invoc) |
| 790 |
> |
bl C_SYMBOL_NAME(named_check_load_invoc) |
| 791 |
|
lwz r3,56+8(r1) // Restore handle |
| 792 |
|
|
| 793 |
|
// Return to caller |
| 795 |
|
mtlr r0 |
| 796 |
|
addi r1,r1,56+12 |
| 797 |
|
blr |
| 798 |
+ |
ASM_MACRO_END |
| 799 |
+ |
|
| 800 |
+ |
ASM_GLOBAL_DIRECTIVE C_SYMBOL_NAME(get_named_resource) |
| 801 |
+ |
C_SYMBOL_NAME(get_named_resource): |
| 802 |
+ |
do_get_named_resource XLM_GET_NAMED_RESOURCE |
| 803 |
+ |
|
| 804 |
+ |
ASM_GLOBAL_DIRECTIVE C_SYMBOL_NAME(get_1_named_resource) |
| 805 |
+ |
C_SYMBOL_NAME(get_1_named_resource): |
| 806 |
+ |
do_get_named_resource XLM_GET_1_NAMED_RESOURCE |
| 807 |
|
|
| 808 |
|
|
| 809 |
|
/* |
| 856 |
|
|
| 857 |
|
|
| 858 |
|
/* |
| 859 |
< |
* Glue for glibc with TLS support which clobbers r2 |
| 923 |
< |
* |
| 924 |
< |
* The following is derived from dietlibc and only provides |
| 925 |
< |
* pass-through to kernel syscalls. You also lose asynchronous |
| 926 |
< |
* cancellation support. |
| 859 |
> |
* Define signal handlers with alternate stack initialization magic |
| 860 |
|
*/ |
| 861 |
|
|
| 862 |
< |
#if defined(__linux__) |
| 863 |
< |
#define __NR_getpid 20 |
| 864 |
< |
#define __NR__newselect 142 |
| 865 |
< |
|
| 866 |
< |
#define syscall_weak(name,wsym,sym) \ |
| 867 |
< |
.text; \ |
| 868 |
< |
.type wsym,@function; \ |
| 869 |
< |
.weak wsym; \ |
| 870 |
< |
wsym: ; \ |
| 871 |
< |
.type sym,@function; \ |
| 872 |
< |
.global sym; \ |
| 873 |
< |
sym: \ |
| 874 |
< |
li 0,__NR_##name; \ |
| 875 |
< |
b __unified_syscall |
| 876 |
< |
|
| 877 |
< |
#define syscall(name,sym) \ |
| 878 |
< |
.text; \ |
| 879 |
< |
.type sym,@function; \ |
| 880 |
< |
.global sym; \ |
| 881 |
< |
sym: \ |
| 882 |
< |
li 0,__NR_##name; \ |
| 883 |
< |
b __unified_syscall |
| 884 |
< |
|
| 885 |
< |
|
| 886 |
< |
.type __unified_syscall,@function |
| 887 |
< |
__unified_syscall: |
| 888 |
< |
sc |
| 889 |
< |
bnslr+ |
| 890 |
< |
stwu 1,-16(1) |
| 891 |
< |
mflr 0 |
| 892 |
< |
stw 0,20(1) |
| 893 |
< |
stw 3,12(1) |
| 894 |
< |
bl __errno_location |
| 895 |
< |
lwz 0,12(1) |
| 896 |
< |
stw 0,0(3) |
| 897 |
< |
lwz 0,20(1) |
| 898 |
< |
mtlr 0 |
| 899 |
< |
addi 1,1,16 |
| 900 |
< |
blr |
| 901 |
< |
|
| 902 |
< |
/* name weak symbol symbol */ |
| 903 |
< |
syscall( getpid, getpid) |
| 904 |
< |
syscall_weak( _newselect, select, __select) |
| 905 |
< |
#endif |
| 862 |
> |
#define SIG_STACK_SIZE 0x10000 |
| 863 |
> |
|
| 864 |
> |
ASM_MACRO_START do_define_signal_handler \ |
| 865 |
> |
ASM_MACRO_ARG0_DEF /* name */ \ |
| 866 |
> |
ASM_MACRO_ARG1_DEF /* stack */ \ |
| 867 |
> |
ASM_MACRO_ARG2_DEF /* stack id */ \ |
| 868 |
> |
ASM_MACRO_ARG3_DEF /* signal handler */ |
| 869 |
> |
|
| 870 |
> |
// Alternate stack lower base for this signal handler |
| 871 |
> |
.lcomm ASM_MACRO_ARG1,SIG_STACK_SIZE,ASM_ALIGN_2(4) |
| 872 |
> |
ASM_TYPE(ASM_MACRO_ARG1,@object) |
| 873 |
> |
|
| 874 |
> |
// Represents the current nest level for this signal handler |
| 875 |
> |
// Note that in SheepShaver, SIGUSR2 signals are blocked while |
| 876 |
> |
// handling other signals so, it's unlikely we ever get a nest |
| 877 |
> |
// level greater than 1 |
| 878 |
> |
.lcomm ASM_MACRO_ARG2,4,ASM_ALIGN_2(2) |
| 879 |
> |
ASM_TYPE(ASM_MACRO_ARG2,@object) |
| 880 |
> |
|
| 881 |
> |
ASM_GLOBAL_DIRECTIVE C_SYMBOL_NAME(ASM_MACRO_ARG0) |
| 882 |
> |
C_SYMBOL_NAME(ASM_MACRO_ARG0): |
| 883 |
> |
// Preserve args in scratch registers |
| 884 |
> |
mflr r14 |
| 885 |
> |
mr r15,r3 |
| 886 |
> |
mr r16,r4 |
| 887 |
> |
mr r17,r5 |
| 888 |
> |
mr r18,r1 |
| 889 |
> |
|
| 890 |
> |
// Atomically increase stack_id |
| 891 |
> |
lis r19,ASM_HA16(ASM_MACRO_ARG2) |
| 892 |
> |
la r19,ASM_LO16(ASM_MACRO_ARG2)(r19) |
| 893 |
> |
li r4,1 |
| 894 |
> |
mr r3,r19 |
| 895 |
> |
bl C_SYMBOL_NAME(atomic_add) |
| 896 |
> |
cmpwi r3,0 |
| 897 |
> |
bne- 1f |
| 898 |
> |
|
| 899 |
> |
// ID was 0, we can use the local stack |
| 900 |
> |
lis r9,ASM_HA16(ASM_MACRO_ARG1) |
| 901 |
> |
lis r3,(SIG_STACK_SIZE>>16) |
| 902 |
> |
la r9,ASM_LO16(ASM_MACRO_ARG1)(r9) |
| 903 |
> |
addi r3,r3,((SIG_STACK_SIZE&0xffff)-64) |
| 904 |
> |
add r1,r9,r3 |
| 905 |
> |
|
| 906 |
> |
1: // Invoke signal handler |
| 907 |
> |
stwu r1,-16(r1) |
| 908 |
> |
mr r3,r15 |
| 909 |
> |
mr r4,r16 |
| 910 |
> |
mr r5,r17 |
| 911 |
> |
bl C_SYMBOL_NAME(ASM_MACRO_ARG3) |
| 912 |
> |
addi r1,r1,16 |
| 913 |
> |
|
| 914 |
> |
// Atomically decrease stack id |
| 915 |
> |
mr r3,r19 |
| 916 |
> |
li r4,-1 |
| 917 |
> |
bl C_SYMBOL_NAME(atomic_add) |
| 918 |
> |
|
| 919 |
> |
// Restore kernel stack and return |
| 920 |
> |
mtlr r14 |
| 921 |
> |
mr r1,r18 |
| 922 |
> |
blr |
| 923 |
> |
ASM_MACRO_END |
| 924 |
> |
|
| 925 |
> |
#define DEFINE_SIGNAL_HANDLER(NAME) \ |
| 926 |
> |
do_define_signal_handler \ |
| 927 |
> |
NAME##_handler_init ASM_MACRO_ARG_SEP \ |
| 928 |
> |
NAME##_stack ASM_MACRO_ARG_SEP \ |
| 929 |
> |
NAME##_stack_id ASM_MACRO_ARG_SEP \ |
| 930 |
> |
NAME##_handler |
| 931 |
> |
|
| 932 |
> |
DEFINE_SIGNAL_HANDLER(sigusr2) |
