| ... | @@ -479,7 +479,6 @@ fn clone() callconv(.Naked) void { | ... | @@ -479,7 +479,6 @@ fn clone() callconv(.Naked) void { |
| 479 | \\ syscall | 479 | \\ syscall |
| 480 | ); | 480 | ); |
| 481 | }, | 481 | }, |
| 482 | | | |
| 483 | .powerpc64, .powerpc64le => { | 482 | .powerpc64, .powerpc64le => { |
| 484 | asm volatile ( | 483 | asm volatile ( |
| 485 | \\ # store non-volatile regs r30, r31 on stack in order to put our | 484 | \\ # store non-volatile regs r30, r31 on stack in order to put our |
| ... | @@ -528,7 +527,51 @@ fn clone() callconv(.Naked) void { | ... | @@ -528,7 +527,51 @@ fn clone() callconv(.Naked) void { |
| 528 | \\ blr | 527 | \\ blr |
| 529 | ); | 528 | ); |
| 530 | }, | 529 | }, |
| | 530 | .sparcv9 => { |
| | 531 | // Implementation by @LemonBoy (https://github.com/LemonBoy) |
| | 532 | // __clone(func, stack, flags, arg, ptid, tls, ctid) |
| | 533 | // i0, i1, i2, i3, i4, i5, sp |
| 531 | | 534 | |
| | 535 | // syscall(SYS_clone, flags, stack, ptid, tls, ctid) |
| | 536 | // g1 o0, o1, o2, o3, o4 |
| | 537 | asm volatile ( |
| | 538 | \\ save %%sp, -192, %%sp |
| | 539 | \\ # Save the func pointer and the arg pointer |
| | 540 | \\ mov %%i0, %%g2 |
| | 541 | \\ mov %%i3, %%g3 |
| | 542 | \\ # Shuffle the arguments |
| | 543 | \\ mov 217, %%g1 |
| | 544 | \\ mov %%i2, %%o0 |
| | 545 | \\ sub %%i1, 2047, %%o1 |
| | 546 | \\ mov %%i4, %%o2 |
| | 547 | \\ mov %%i5, %%o3 |
| | 548 | \\ ldx [%%fp + 192 - 2*8 + 2047], %%o4 |
| | 549 | \\ t 0x6d |
| | 550 | \\ bcs,pn %%xcc, 2f |
| | 551 | \\ nop |
| | 552 | \\ # sparc64 returns the child pid in o0 and a flag telling |
| | 553 | \\ # whether the process is the child in o1 |
| | 554 | \\ brnz %%o1, 1f |
| | 555 | \\ nop |
| | 556 | \\ # This is the parent process, return the child pid |
| | 557 | \\ mov %%o0, %%i0 |
| | 558 | \\ ret |
| | 559 | \\ restore |
| | 560 | \\1: |
| | 561 | \\ # This is the child process |
| | 562 | \\ mov %%g0, %%fp |
| | 563 | \\ call %%g2 |
| | 564 | \\ mov %%g3, %%o0 |
| | 565 | \\ # Exit |
| | 566 | \\ mov 1, %%g1 |
| | 567 | \\ t 0x6d |
| | 568 | \\2: |
| | 569 | \\ # The syscall failed |
| | 570 | \\ sub %%g0, %%o0, %%i0 |
| | 571 | \\ ret |
| | 572 | \\ restore |
| | 573 | ); |
| | 574 | }, |
| 532 | else => @compileError("Implement clone() for this arch."), | 575 | else => @compileError("Implement clone() for this arch."), |
| 533 | } | 576 | } |
| 534 | } | 577 | } |
Koakuma <koachan@protonmail.com> 2020-08-29 11:50:07+07:00
lib