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/*
* linux/arch/alpha/lib/semaphore.S
*
* Copyright (C) 1999 Richard Henderson
*/
/*
* The semaphore operations have a special calling sequence that
* allow us to do a simpler in-line version of them. These routines
* need to convert that sequence back into the C sequence when
* there is contention on the semaphore.
*/
.set noat
.set noreorder
.align 4
/* __down_failed takes the semaphore in $24, clobbers $24 and $28. */
.globl __down_failed
.ent __down_failed
__down_failed:
ldgp $29,0($27)
lda $30, -20*8($30)
stq $28, 0*8($30)
stq $0, 1*8($30)
stq $1, 2*8($30)
stq $2, 3*8($30)
stq $3, 4*8($30)
stq $4, 5*8($30)
stq $5, 6*8($30)
stq $6, 7*8($30)
stq $7, 8*8($30)
stq $16, 9*8($30)
stq $17, 10*8($30)
stq $18, 11*8($30)
stq $19, 12*8($30)
stq $20, 13*8($30)
stq $21, 14*8($30)
stq $22, 15*8($30)
stq $23, 16*8($30)
stq $25, 17*8($30)
stq $26, 18*8($30)
.frame $30, 20*8, $28
.prologue 1
mov $24, $16
jsr __down
ldq $28, 0*8($30)
ldq $0, 1*8($30)
ldq $1, 2*8($30)
ldq $2, 3*8($30)
ldq $3, 4*8($30)
ldq $4, 5*8($30)
ldq $5, 6*8($30)
ldq $6, 7*8($30)
ldq $7, 8*8($30)
ldq $16, 9*8($30)
ldq $17, 10*8($30)
ldq $18, 11*8($30)
ldq $19, 12*8($30)
ldq $20, 13*8($30)
ldq $21, 14*8($30)
ldq $22, 15*8($30)
ldq $23, 16*8($30)
ldq $25, 17*8($30)
ldq $26, 18*8($30)
lda $30, 20*8($30)
ret $31, ($28), 0
.end __down_failed
/* __down_failed_interruptible takes the semaphore in $24,
clobbers $28, returns success in $24. */
.globl __down_failed_interruptible
.ent __down_failed_interruptible
__down_failed_interruptible:
ldgp $29,0($27)
lda $30, -20*8($30)
stq $28, 0*8($30)
stq $0, 1*8($30)
stq $1, 2*8($30)
stq $2, 3*8($30)
stq $3, 4*8($30)
stq $4, 5*8($30)
stq $5, 6*8($30)
stq $6, 7*8($30)
stq $7, 8*8($30)
stq $16, 9*8($30)
stq $17, 10*8($30)
stq $18, 11*8($30)
stq $19, 12*8($30)
stq $20, 13*8($30)
stq $21, 14*8($30)
stq $22, 15*8($30)
stq $23, 16*8($30)
stq $25, 17*8($30)
stq $26, 18*8($30)
.frame $30, 20*8, $28
.prologue 1
mov $24, $16
jsr __down_interruptible
mov $0, $24
ldq $28, 0*8($30)
ldq $0, 1*8($30)
ldq $1, 2*8($30)
ldq $2, 3*8($30)
ldq $3, 4*8($30)
ldq $4, 5*8($30)
ldq $5, 6*8($30)
ldq $6, 7*8($30)
ldq $7, 8*8($30)
ldq $16, 9*8($30)
ldq $17, 10*8($30)
ldq $18, 11*8($30)
ldq $19, 12*8($30)
ldq $20, 13*8($30)
ldq $21, 14*8($30)
ldq $22, 15*8($30)
ldq $23, 16*8($30)
ldq $25, 17*8($30)
ldq $26, 18*8($30)
lda $30, 20*8($30)
ret $31, ($28), 0
.end __down_failed_interruptible
/* __up_wakeup takes the semaphore in $24, clobbers $24 and $28. */
.globl __up_wakeup
.ent __up_wakeup
__up_wakeup:
ldgp $29,0($27)
lda $30, -20*8($30)
stq $28, 0*8($30)
stq $0, 1*8($30)
stq $1, 2*8($30)
stq $2, 3*8($30)
stq $3, 4*8($30)
stq $4, 5*8($30)
stq $5, 6*8($30)
stq $6, 7*8($30)
stq $7, 8*8($30)
stq $16, 9*8($30)
stq $17, 10*8($30)
stq $18, 11*8($30)
stq $19, 12*8($30)
stq $20, 13*8($30)
stq $21, 14*8($30)
stq $22, 15*8($30)
stq $23, 16*8($30)
stq $25, 17*8($30)
stq $26, 18*8($30)
.frame $30, 20*8, $28
.prologue 1
mov $24, $16
jsr __up
ldq $28, 0*8($30)
ldq $0, 1*8($30)
ldq $1, 2*8($30)
ldq $2, 3*8($30)
ldq $3, 4*8($30)
ldq $4, 5*8($30)
ldq $5, 6*8($30)
ldq $6, 7*8($30)
ldq $7, 8*8($30)
ldq $16, 9*8($30)
ldq $17, 10*8($30)
ldq $18, 11*8($30)
ldq $19, 12*8($30)
ldq $20, 13*8($30)
ldq $21, 14*8($30)
ldq $22, 15*8($30)
ldq $23, 16*8($30)
ldq $25, 17*8($30)
ldq $26, 18*8($30)
lda $30, 20*8($30)
ret $31, ($28), 0
.end __up_wakeup
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