patch-2.3.99-pre4 linux/arch/sparc64/lib/bitops.S

• Lines: 111
• Date: Thu Mar 30 16:54:53 2000
• Orig file: v2.3.99-pre3/linux/arch/sparc64/lib/bitops.S
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.3.99-pre3/linux/arch/sparc64/lib/bitops.S linux/arch/sparc64/lib/bitops.S
@@ -0,0 +1,110 @@
+/* $Id: bitops.S,v 1.1 2000/03/27 10:38:41 davem Exp $
+ * bitops.S: Sparc64 atomic bit operations.
+ *
+ * Copyright (C) 2000 David S. Miller (davem@redhat.com)
+ */
+
+#include <asm/asi.h>
+
+	.text
+	.align	64
+	.globl	__bitops_begin
+__bitops_begin:
+
+	.globl	__test_and_set_bit
+__test_and_set_bit:	/* %o0=nr, %o1=addr */
+	srlx	%o0, 6, %g1
+	mov	1, %g5
+	sllx	%g1, 3, %g3
+	and	%o0, 63, %g2
+	sllx	%g5, %g2, %g5
+	add	%o1, %g3, %o1
+	ldx	[%o1], %g7
+1:	andcc	%g7, %g5, %o0
+	bne,pn	%xcc, 2f
+	 xor	%g7, %g5, %g1
+	casx	[%o1], %g7, %g1
+	cmp	%g7, %g1
+	bne,a,pn %xcc, 1b
+	 ldx	[%o1], %g7
+2:	retl
+	 nop
+
+	.globl	__test_and_clear_bit
+__test_and_clear_bit:	/* %o0=nr, %o1=addr */
+	srlx	%o0, 6, %g1
+	mov	1, %g5
+	sllx	%g1, 3, %g3
+	and	%o0, 63, %g2
+	sllx	%g5, %g2, %g5
+	add	%o1, %g3, %o1
+	ldx	[%o1], %g7
+1:	andcc	%g7, %g5, %o0
+	be,pn	%xcc, 2f
+	 xor	%g7, %g5, %g1
+	casx	[%o1], %g7, %g1
+	cmp	%g7, %g1
+	bne,a,pn %xcc, 1b
+	 ldx	[%o1], %g7
+2:	retl
+	 nop
+
+	.globl	__test_and_change_bit
+__test_and_change_bit:	/* %o0=nr, %o1=addr */
+	srlx	%o0, 6, %g1
+	mov	1, %g5
+	sllx	%g1, 3, %g3
+	and	%o0, 63, %g2
+	sllx	%g5, %g2, %g5
+	add	%o1, %g3, %o1
+	ldx	[%o1], %g7
+1:	and	%g7, %g5, %o0
+	xor	%g7, %g5, %g1
+	casx	[%o1], %g7, %g1
+	cmp	%g7, %g1
+	bne,a,pn %xcc, 1b
+	 ldx	[%o1], %g7
+2:	retl
+	 nop
+	nop
+
+	.globl	__test_and_set_le_bit
+__test_and_set_le_bit:	/* %o0=nr, %o1=addr */
+	srlx	%o0, 5, %g1
+	mov	1, %g5
+	sllx	%g1, 2, %g3
+	and	%o0, 31, %g2
+	sllx	%g5, %g2, %g5
+	add	%o1, %g3, %o1
+	lduwa	[%o1] ASI_PL, %g7
+1:	andcc	%g7, %g5, %o0
+	bne,pn	%icc, 2f
+	 xor	%g7, %g5, %g1
+	casa	[%o1] ASI_PL, %g7, %g1
+	cmp	%g7, %g1
+	bne,a,pn %icc, 1b
+	 lduwa	[%o1] ASI_PL, %g7
+2:	retl
+	 nop
+
+	.globl	__test_and_clear_le_bit
+__test_and_clear_le_bit:	/* %o0=nr, %o1=addr */
+	srlx	%o0, 5, %g1
+	mov	1, %g5
+	sllx	%g1, 2, %g3
+	and	%o0, 31, %g2
+	sllx	%g5, %g2, %g5
+	add	%o1, %g3, %o1
+	lduwa	[%o1] ASI_PL, %g7
+1:	andcc	%g7, %g5, %o0
+	be,pn	%icc, 2f
+	 xor	%g7, %g5, %g1
+	casa	[%o1] ASI_PL, %g7, %g1
+	cmp	%g7, %g1
+	bne,a,pn %icc, 1b
+	 lduwa	[%o1] ASI_PL, %g7
+2:	retl
+	 nop
+
+	.globl	__bitops_end
+__bitops_end: