patch-2.2.0-pre8 linux/arch/alpha/lib/semaphore.S

• Lines: 185
• Date: Sat Jan 16 17:02:51 1999
• Orig file: v2.2.0-pre7/linux/arch/alpha/lib/semaphore.S
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.2.0-pre7/linux/arch/alpha/lib/semaphore.S linux/arch/alpha/lib/semaphore.S
@@ -0,0 +1,184 @@
+/*
+ *  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)
+	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
+	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