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#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)
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