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| author | Charles Forsyth <charles.forsyth@gmail.com> | 2018-12-21 15:12:00 +0000 |
|---|---|---|
| committer | Charles Forsyth <charles.forsyth@gmail.com> | 2018-12-21 15:12:00 +0000 |
| commit | f092bcd9be21a77f026a7c3227a920437d35b9e5 (patch) | |
| tree | fd953df2a342e9cf9313f23b98d46e927f3da258 /emu/NetBSD/asm-power.S | |
| parent | 0195c4e25fc394097552c7f5ebf3085ec2d201f5 (diff) | |
| parent | af364d9265f84faf807f5db6b8db6936a92124c6 (diff) | |
Merged in nbuwe/inferno-os/NetBSD/powerpc (pull request #10)
NetBSD/powerpc
Approved-by: Charles Forsyth <charles.forsyth@gmail.com>
Diffstat (limited to 'emu/NetBSD/asm-power.S')
| -rw-r--r-- | emu/NetBSD/asm-power.S | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/emu/NetBSD/asm-power.S b/emu/NetBSD/asm-power.S new file mode 100644 index 00000000..da40e825 --- /dev/null +++ b/emu/NetBSD/asm-power.S @@ -0,0 +1,91 @@ +#include <machine/asm.h> + +ENTRY_NOPROFILE(FPsave) + stfd %f14,0*8(%r3) + stfd %f15,1*8(%r3) + stfd %f16,2*8(%r3) + stfd %f17,3*8(%r3) + stfd %f18,4*8(%r3) + stfd %f19,5*8(%r3) + stfd %f20,6*8(%r3) + stfd %f21,7*8(%r3) + stfd %f22,8*8(%r3) + stfd %f23,9*8(%r3) + stfd %f24,10*8(%r3) + stfd %f25,11*8(%r3) + stfd %f26,12*8(%r3) + stfd %f27,13*8(%r3) + stfd %f28,14*8(%r3) + stfd %f29,15*8(%r3) + stfd %f30,16*8(%r3) + stfd %f31,17*8(%r3) + blr + END(FPsave) + +ENTRY_NOPROFILE(FPrestore) + lfd %f14,0*8(%r3) + lfd %f15,1*8(%r3) + lfd %f16,2*8(%r3) + lfd %f17,3*8(%r3) + lfd %f18,4*8(%r3) + lfd %f19,5*8(%r3) + lfd %f20,6*8(%r3) + lfd %f21,7*8(%r3) + lfd %f22,8*8(%r3) + lfd %f23,9*8(%r3) + lfd %f24,10*8(%r3) + lfd %f25,11*8(%r3) + lfd %f26,12*8(%r3) + lfd %f27,13*8(%r3) + lfd %f28,14*8(%r3) + lfd %f29,15*8(%r3) + lfd %f30,16*8(%r3) + lfd %f31,17*8(%r3) + blr + END(FPrestore) + +ENTRY_NOPROFILE(_tas) + sync + mr %r4, %r3 + addi %r5,0,0x1 +1: + lwarx %r3, 0, %r4 + cmpwi %r3, 0 + bne- 2f + stwcx. %r5, 0, %r4 + bne- 1b +2: + sync + blr + END(_tas) + +/* + * void + * executeonnewstack(void *tos, void (*tramp)(void *arg), void *arg) + */ +ENTRY_NOPROFILE(executeonnewstack) + mr %r1,%r3 /* change stacks */ + stwu %lr,-16(%r1) /* save lr to aid the traceback */ + li %r0,0 + stw %r0,20(%r1) + mr %r3,%r5 + mtctr %r4 + bctrl /* tramp(arg) */ + br + END(executeonnewstack) + +/* + * void unlockandexit(int *key) + * + * NB: the return status may be garbaged if the stack is reused + * between the unlock and the system call, but this should + * not matter since no task is waiting for the result + */ +ENTRY_NOPROFILE(unlockandexit) + li %r0,0x0 + stw %r0,0(%r3) /* unlock */ + li %r0,1 /* sys exit; 234 is exit group */ + li %r3,0 /* exit status */ + sc + br + END(unlockandexit) |