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!
author: Linus Torvalds <torvalds@ppc970.osdl.org> 2005-04-16 18:20:36 -0400
committer: Linus Torvalds <torvalds@ppc970.osdl.org> 2005-04-16 18:20:36 -0400
commit: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree: 0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/sparc/lib/rwsem.S
1 files changed, 205 insertions, 0 deletions
diff --git a/arch/sparc/lib/rwsem.S b/arch/sparc/lib/rwsem.S
new file mode 100644
index 000000000000..e7578dc600b8
--- /dev/null
+++ b/arch/sparc/lib/rwsem.S
@@ -0,0 +1,205 @@
+/* $Id: rwsem.S,v 1.5 2000/05/09 17:40:13 davem Exp $
+ * Assembly part of rw semaphores.
+ *
+ * Copyright (C) 1999 Jakub Jelinek (jakub@redhat.com)
+ */
+#include <linux/config.h>
+#include <asm/ptrace.h>
+#include <asm/psr.h>
+        .section .sched.text
+        .align  4
+        .globl          ___down_read
+___down_read:
+        rd              %psr, %g3
+        nop
+        nop
+        nop
+        or              %g3, PSR_PIL, %g7
+        wr              %g7, 0, %psr
+        nop
+        nop
+        nop
+#ifdef CONFIG_SMP
+1:      ldstub          [%g1 + 4], %g7
+        tst             %g7
+        bne             1b
+         ld             [%g1], %g7
+        sub             %g7, 1, %g7
+        st              %g7, [%g1]
+        stb             %g0, [%g1 + 4]
+#else
+        ld              [%g1], %g7
+        sub             %g7, 1, %g7
+        st              %g7, [%g1]
+#endif
+        wr              %g3, 0, %psr
+        add             %g7, 1, %g7
+        nop
+        nop
+        subcc           %g7, 1, %g7
+        bneg            3f
+         nop
+2:      jmpl            %o7, %g0
+         mov            %g4, %o7
+3:      save            %sp, -64, %sp
+        mov             %g1, %l1
+        mov             %g4, %l4
+        bcs             4f
+         mov            %g5, %l5
+        call            down_read_failed
+         mov            %l1, %o0
+        mov             %l1, %g1
+        mov             %l4, %g4
+        ba              ___down_read
+         restore        %l5, %g0, %g5
+4:      call            down_read_failed_biased
+         mov            %l1, %o0
+        mov             %l1, %g1
+        mov             %l4, %g4
+        ba              2b
+         restore        %l5, %g0, %g5
+        .globl          ___down_write
+___down_write:
+        rd              %psr, %g3
+        nop
+        nop
+        nop
+        or              %g3, PSR_PIL, %g7
+        wr              %g7, 0, %psr
+        sethi           %hi(0x01000000), %g2
+        nop
+        nop
+#ifdef CONFIG_SMP
+1:      ldstub          [%g1 + 4], %g7
+        tst             %g7
+        bne             1b
+         ld             [%g1], %g7
+        sub             %g7, %g2, %g7
+        st              %g7, [%g1]
+        stb             %g0, [%g1 + 4]
+#else
+        ld              [%g1], %g7
+        sub             %g7, %g2, %g7
+        st              %g7, [%g1]
+#endif
+        wr              %g3, 0, %psr
+        add             %g7, %g2, %g7
+        nop
+        nop
+        subcc           %g7, %g2, %g7
+        bne             3f
+         nop
+2:      jmpl            %o7, %g0
+         mov            %g4, %o7
+3:      save            %sp, -64, %sp
+        mov             %g1, %l1
+        mov             %g4, %l4
+        bcs             4f
+         mov            %g5, %l5
+        call            down_write_failed
+         mov            %l1, %o0
+        mov             %l1, %g1
+        mov             %l4, %g4
+        ba              ___down_write
+         restore        %l5, %g0, %g5
+4:      call            down_write_failed_biased
+         mov            %l1, %o0
+        mov             %l1, %g1
+        mov             %l4, %g4
+        ba              2b
+         restore        %l5, %g0, %g5
+        .text
+        .globl          ___up_read
+___up_read:
+        rd              %psr, %g3
+        nop
+        nop
+        nop
+        or              %g3, PSR_PIL, %g7
+        wr              %g7, 0, %psr
+        nop
+        nop
+        nop
+#ifdef CONFIG_SMP
+1:      ldstub          [%g1 + 4], %g7
+        tst             %g7
+        bne             1b
+         ld             [%g1], %g7
+        add             %g7, 1, %g7
+        st              %g7, [%g1]
+        stb             %g0, [%g1 + 4]
+#else
+        ld              [%g1], %g7
+        add             %g7, 1, %g7
+        st              %g7, [%g1]
+#endif
+        wr              %g3, 0, %psr
+        nop
+        nop
+        nop
+        cmp             %g7, 0
+        be              3f
+         nop
+2:      jmpl            %o7, %g0
+         mov            %g4, %o7
+3:      save            %sp, -64, %sp
+        mov             %g1, %l1
+        mov             %g4, %l4
+        mov             %g5, %l5
+        clr             %o1
+        call            __rwsem_wake
+         mov            %l1, %o0
+        mov             %l1, %g1
+        mov             %l4, %g4
+        ba              2b
+         restore        %l5, %g0, %g5
+        .globl          ___up_write
+___up_write:
+        rd              %psr, %g3
+        nop
+        nop
+        nop
+        or              %g3, PSR_PIL, %g7
+        wr              %g7, 0, %psr
+        sethi           %hi(0x01000000), %g2
+        nop
+        nop
+#ifdef CONFIG_SMP
+1:      ldstub          [%g1 + 4], %g7
+        tst             %g7
+        bne             1b
+         ld             [%g1], %g7
+        add             %g7, %g2, %g7
+        st              %g7, [%g1]
+        stb             %g0, [%g1 + 4]
+#else
+        ld              [%g1], %g7
+        add             %g7, %g2, %g7
+        st              %g7, [%g1]
+#endif
+        wr              %g3, 0, %psr
+        sub             %g7, %g2, %g7
+        nop
+        nop
+        addcc           %g7, %g2, %g7
+        bcs             3f
+         nop
+2:      jmpl            %o7, %g0
+         mov            %g4, %o7
+3:      save            %sp, -64, %sp
+        mov             %g1, %l1
+        mov             %g4, %l4
+        mov             %g5, %l5
+        mov             %g7, %o1
+        call            __rwsem_wake
+         mov            %l1, %o0
+        mov             %l1, %g1
+        mov             %l4, %g4
+        ba              2b
+         restore        %l5, %g0, %g5
author	Linus Torvalds <torvalds@ppc970.osdl.org>	2005-04-16 18:20:36 -0400
committer	Linus Torvalds <torvalds@ppc970.osdl.org>	2005-04-16 18:20:36 -0400
commit	1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree	0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/sparc/lib/rwsem.S

diff --git a/arch/sparc/lib/rwsem.S b/arch/sparc/lib/rwsem.S new file mode 100644 index 000000000000..e7578dc600b8 --- /dev/null +++ b/arch/sparc/lib/rwsem.S
@@ -0,0 +1,205 @@
	1	/* $Id: rwsem.S,v 1.5 2000/05/09 17:40:13 davem Exp $
	2	* Assembly part of rw semaphores.
	3	*
	4	* Copyright (C) 1999 Jakub Jelinek (jakub@redhat.com)
	5	*/
	6
	7	#include <linux/config.h>
	8	#include <asm/ptrace.h>
	9	#include <asm/psr.h>
	10
	11	.section .sched.text
	12	.align 4
	13
	14	.globl ___down_read
	15	___down_read:
	16	rd %psr, %g3
	17	nop
	18	nop
	19	nop
	20	or %g3, PSR_PIL, %g7
	21	wr %g7, 0, %psr
	22	nop
	23	nop
	24	nop
	25	#ifdef CONFIG_SMP
	26	1: ldstub [%g1 + 4], %g7
	27	tst %g7
	28	bne 1b
	29	ld [%g1], %g7
	30	sub %g7, 1, %g7
	31	st %g7, [%g1]
	32	stb %g0, [%g1 + 4]
	33	#else
	34	ld [%g1], %g7
	35	sub %g7, 1, %g7
	36	st %g7, [%g1]
	37	#endif
	38	wr %g3, 0, %psr
	39	add %g7, 1, %g7
	40	nop
	41	nop
	42	subcc %g7, 1, %g7
	43	bneg 3f
	44	nop
	45	2: jmpl %o7, %g0
	46	mov %g4, %o7
	47	3: save %sp, -64, %sp
	48	mov %g1, %l1
	49	mov %g4, %l4
	50	bcs 4f
	51	mov %g5, %l5
	52	call down_read_failed
	53	mov %l1, %o0
	54	mov %l1, %g1
	55	mov %l4, %g4
	56	ba ___down_read
	57	restore %l5, %g0, %g5
	58	4: call down_read_failed_biased
	59	mov %l1, %o0
	60	mov %l1, %g1
	61	mov %l4, %g4
	62	ba 2b
	63	restore %l5, %g0, %g5
	64
	65	.globl ___down_write
	66	___down_write:
	67	rd %psr, %g3
	68	nop
	69	nop
	70	nop
	71	or %g3, PSR_PIL, %g7
	72	wr %g7, 0, %psr
	73	sethi %hi(0x01000000), %g2
	74	nop
	75	nop
	76	#ifdef CONFIG_SMP
	77	1: ldstub [%g1 + 4], %g7
	78	tst %g7
	79	bne 1b
	80	ld [%g1], %g7
	81	sub %g7, %g2, %g7
	82	st %g7, [%g1]
	83	stb %g0, [%g1 + 4]
	84	#else
	85	ld [%g1], %g7
	86	sub %g7, %g2, %g7
	87	st %g7, [%g1]
	88	#endif
	89	wr %g3, 0, %psr
	90	add %g7, %g2, %g7
	91	nop
	92	nop
	93	subcc %g7, %g2, %g7
	94	bne 3f
	95	nop
	96	2: jmpl %o7, %g0
	97	mov %g4, %o7
	98	3: save %sp, -64, %sp
	99	mov %g1, %l1
	100	mov %g4, %l4
	101	bcs 4f
	102	mov %g5, %l5
	103	call down_write_failed
	104	mov %l1, %o0
	105	mov %l1, %g1
	106	mov %l4, %g4
	107	ba ___down_write
	108	restore %l5, %g0, %g5
	109	4: call down_write_failed_biased
	110	mov %l1, %o0
	111	mov %l1, %g1
	112	mov %l4, %g4
	113	ba 2b
	114	restore %l5, %g0, %g5
	115
	116	.text
	117	.globl ___up_read
	118	___up_read:
	119	rd %psr, %g3
	120	nop
	121	nop
	122	nop
	123	or %g3, PSR_PIL, %g7
	124	wr %g7, 0, %psr
	125	nop
	126	nop
	127	nop
	128	#ifdef CONFIG_SMP
	129	1: ldstub [%g1 + 4], %g7
	130	tst %g7
	131	bne 1b
	132	ld [%g1], %g7
	133	add %g7, 1, %g7
	134	st %g7, [%g1]
	135	stb %g0, [%g1 + 4]
	136	#else
	137	ld [%g1], %g7
	138	add %g7, 1, %g7
	139	st %g7, [%g1]
	140	#endif
	141	wr %g3, 0, %psr
	142	nop
	143	nop
	144	nop
	145	cmp %g7, 0
	146	be 3f
	147	nop
	148	2: jmpl %o7, %g0
	149	mov %g4, %o7
	150	3: save %sp, -64, %sp
	151	mov %g1, %l1
	152	mov %g4, %l4
	153	mov %g5, %l5
	154	clr %o1
	155	call __rwsem_wake
	156	mov %l1, %o0
	157	mov %l1, %g1
	158	mov %l4, %g4
	159	ba 2b
	160	restore %l5, %g0, %g5
	161
	162	.globl ___up_write
	163	___up_write:
	164	rd %psr, %g3
	165	nop
	166	nop
	167	nop
	168	or %g3, PSR_PIL, %g7
	169	wr %g7, 0, %psr
	170	sethi %hi(0x01000000), %g2
	171	nop
	172	nop
	173	#ifdef CONFIG_SMP
	174	1: ldstub [%g1 + 4], %g7
	175	tst %g7
	176	bne 1b
	177	ld [%g1], %g7
	178	add %g7, %g2, %g7
	179	st %g7, [%g1]
	180	stb %g0, [%g1 + 4]
	181	#else
	182	ld [%g1], %g7
	183	add %g7, %g2, %g7
	184	st %g7, [%g1]
	185	#endif
	186	wr %g3, 0, %psr
	187	sub %g7, %g2, %g7
	188	nop
	189	nop
	190	addcc %g7, %g2, %g7
	191	bcs 3f
	192	nop
	193	2: jmpl %o7, %g0
	194	mov %g4, %o7
	195	3: save %sp, -64, %sp
	196	mov %g1, %l1
	197	mov %g4, %l4
	198	mov %g5, %l5
	199	mov %g7, %o1
	200	call __rwsem_wake
	201	mov %l1, %o0
	202	mov %l1, %g1
	203	mov %l4, %g4
	204	ba 2b
	205	restore %l5, %g0, %g5