Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 145 insertions, 0 deletions

diff --git a/arch/sparc64/lib/bitops.S b/arch/sparc64/lib/bitops.S
new file mode 100644
index 000000000000..886dcd2b376a
--- /dev/null
+++ b/arch/sparc64/lib/bitops.S
@@ -0,0 +1,145 @@
+/* $Id: bitops.S,v 1.3 2001/11/18 00:12:56 davem Exp $
+ * bitops.S: Sparc64 atomic bit operations.
+ *
+ * Copyright (C) 2000 David S. Miller (davem@redhat.com)
+ */
+
+#include <linux/config.h>
+#include <asm/asi.h>
+
+        /* On SMP we need to use memory barriers to ensure
+         * correct memory operation ordering, nop these out
+         * for uniprocessor.
+         */
+#ifdef CONFIG_SMP
+#define BITOP_PRE_BARRIER       membar #StoreLoad | #LoadLoad
+#define BITOP_POST_BARRIER      membar #StoreLoad | #StoreStore
+#else
+#define BITOP_PRE_BARRIER       nop
+#define BITOP_POST_BARRIER      nop
+#endif
+
+        .text
+
+        .globl  test_and_set_bit
+        .type   test_and_set_bit,#function
+test_and_set_bit:       /* %o0=nr, %o1=addr */
+        BITOP_PRE_BARRIER
+        srlx    %o0, 6, %g1
+        mov     1, %o2
+        sllx    %g1, 3, %g3
+        and     %o0, 63, %g2
+        sllx    %o2, %g2, %o2
+        add     %o1, %g3, %o1
+1:      ldx     [%o1], %g7
+        or      %g7, %o2, %g1
+        casx    [%o1], %g7, %g1
+        cmp     %g7, %g1
+        bne,pn  %xcc, 1b
+         and    %g7, %o2, %g2
+        BITOP_POST_BARRIER
+        clr     %o0
+        retl
+         movrne %g2, 1, %o0
+        .size   test_and_set_bit, .-test_and_set_bit
+
+        .globl  test_and_clear_bit
+        .type   test_and_clear_bit,#function
+test_and_clear_bit:     /* %o0=nr, %o1=addr */
+        BITOP_PRE_BARRIER
+        srlx    %o0, 6, %g1
+        mov     1, %o2
+        sllx    %g1, 3, %g3
+        and     %o0, 63, %g2
+        sllx    %o2, %g2, %o2
+        add     %o1, %g3, %o1
+1:      ldx     [%o1], %g7
+        andn    %g7, %o2, %g1
+        casx    [%o1], %g7, %g1
+        cmp     %g7, %g1
+        bne,pn  %xcc, 1b
+         and    %g7, %o2, %g2
+        BITOP_POST_BARRIER
+        clr     %o0
+        retl
+         movrne %g2, 1, %o0
+        .size   test_and_clear_bit, .-test_and_clear_bit
+
+        .globl  test_and_change_bit
+        .type   test_and_change_bit,#function
+test_and_change_bit:    /* %o0=nr, %o1=addr */
+        BITOP_PRE_BARRIER
+        srlx    %o0, 6, %g1
+        mov     1, %o2
+        sllx    %g1, 3, %g3
+        and     %o0, 63, %g2
+        sllx    %o2, %g2, %o2
+        add     %o1, %g3, %o1
+1:      ldx     [%o1], %g7
+        xor     %g7, %o2, %g1
+        casx    [%o1], %g7, %g1
+        cmp     %g7, %g1
+        bne,pn  %xcc, 1b
+         and    %g7, %o2, %g2
+        BITOP_POST_BARRIER
+        clr     %o0
+        retl
+         movrne %g2, 1, %o0
+        .size   test_and_change_bit, .-test_and_change_bit
+
+        .globl  set_bit
+        .type   set_bit,#function
+set_bit:                /* %o0=nr, %o1=addr */
+        srlx    %o0, 6, %g1
+        mov     1, %o2
+        sllx    %g1, 3, %g3
+        and     %o0, 63, %g2
+        sllx    %o2, %g2, %o2
+        add     %o1, %g3, %o1
+1:      ldx     [%o1], %g7
+        or      %g7, %o2, %g1
+        casx    [%o1], %g7, %g1
+        cmp     %g7, %g1
+        bne,pn  %xcc, 1b
+         nop
+        retl
+         nop
+        .size   set_bit, .-set_bit
+
+        .globl  clear_bit
+        .type   clear_bit,#function
+clear_bit:              /* %o0=nr, %o1=addr */
+        srlx    %o0, 6, %g1
+        mov     1, %o2
+        sllx    %g1, 3, %g3
+        and     %o0, 63, %g2
+        sllx    %o2, %g2, %o2
+        add     %o1, %g3, %o1
+1:      ldx     [%o1], %g7
+        andn    %g7, %o2, %g1
+        casx    [%o1], %g7, %g1
+        cmp     %g7, %g1
+        bne,pn  %xcc, 1b
+         nop
+        retl
+         nop
+        .size   clear_bit, .-clear_bit
+
+        .globl  change_bit
+        .type   change_bit,#function
+change_bit:             /* %o0=nr, %o1=addr */
+        srlx    %o0, 6, %g1
+        mov     1, %o2
+        sllx    %g1, 3, %g3
+        and     %o0, 63, %g2
+        sllx    %o2, %g2, %o2
+        add     %o1, %g3, %o1
+1:      ldx     [%o1], %g7
+        xor     %g7, %o2, %g1
+        casx    [%o1], %g7, %g1
+        cmp     %g7, %g1
+        bne,pn  %xcc, 1b
+         nop
+        retl
+         nop
+        .size   change_bit, .-change_bit