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, 130 insertions, 0 deletions

diff --git a/arch/arm/lib/io-readsw-armv4.S b/arch/arm/lib/io-readsw-armv4.S
new file mode 100644
index 000000000000..c92b66ecbe86
--- /dev/null
+++ b/arch/arm/lib/io-readsw-armv4.S
@@ -0,0 +1,130 @@
+/*
+ *  linux/arch/arm/lib/io-readsw-armv4.S
+ *
+ *  Copyright (C) 1995-2000 Russell King
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <linux/linkage.h>
+#include <asm/assembler.h>
+
+                .macro  pack, rd, hw1, hw2
+#ifndef __ARMEB__
+                orr     \rd, \hw1, \hw2, lsl #16
+#else
+                orr     \rd, \hw2, \hw1, lsl #16
+#endif
+                .endm
+
+.insw_align:    movs    ip, r1, lsl #31
+                bne     .insw_noalign
+                ldrh    ip, [r0]
+                sub     r2, r2, #1
+                strh    ip, [r1], #2
+
+ENTRY(__raw_readsw)
+                teq     r2, #0
+                moveq   pc, lr
+                tst     r1, #3
+                bne     .insw_align
+
+                stmfd   sp!, {r4, r5, lr}
+
+                subs    r2, r2, #8
+                bmi     .no_insw_8
+
+.insw_8_lp:     ldrh    r3, [r0]
+                ldrh    r4, [r0]
+                pack    r3, r3, r4
+
+                ldrh    r4, [r0]
+                ldrh    r5, [r0]
+                pack    r4, r4, r5
+
+                ldrh    r5, [r0]
+                ldrh    ip, [r0]
+                pack    r5, r5, ip
+
+                ldrh    ip, [r0]
+                ldrh    lr, [r0]
+                pack    ip, ip, lr
+
+                subs    r2, r2, #8
+                stmia   r1!, {r3 - r5, ip}
+                bpl     .insw_8_lp
+
+.no_insw_8:     tst     r2, #4
+                beq     .no_insw_4
+
+                ldrh    r3, [r0]
+                ldrh    r4, [r0]
+                pack    r3, r3, r4
+
+                ldrh    r4, [r0]
+                ldrh    ip, [r0]
+                pack    r4, r4, ip
+
+                stmia   r1!, {r3, r4}
+
+.no_insw_4:     movs    r2, r2, lsl #31
+                bcc     .no_insw_2
+
+                ldrh    r3, [r0]
+                ldrh    ip, [r0]
+                pack    r3, r3, ip
+                str     r3, [r1], #4
+
+.no_insw_2:     ldrneh  r3, [r0]
+                strneh  r3, [r1]
+
+                ldmfd   sp!, {r4, r5, pc}
+
+#ifdef __ARMEB__
+#define _BE_ONLY_(code...)      code
+#define _LE_ONLY_(code...)
+#define push_hbyte0             lsr #8
+#define pull_hbyte1             lsl #24
+#else
+#define _BE_ONLY_(code...)
+#define _LE_ONLY_(code...) code
+#define push_hbyte0             lsl #24
+#define pull_hbyte1             lsr #8
+#endif
+
+.insw_noalign:  stmfd   sp!, {r4, lr}
+                ldrccb  ip, [r1, #-1]!
+                bcc     1f
+
+                ldrh    ip, [r0]
+                sub     r2, r2, #1
+   _BE_ONLY_(   mov     ip, ip, ror #8          )
+                strb    ip, [r1], #1
+   _LE_ONLY_(   mov     ip, ip, lsr #8          )
+   _BE_ONLY_(   mov     ip, ip, lsr #24         )
+
+1:              subs    r2, r2, #2
+                bmi     3f
+   _BE_ONLY_(   mov     ip, ip, lsl #24         )
+
+2:              ldrh    r3, [r0]
+                ldrh    r4, [r0]
+                subs    r2, r2, #2
+                orr     ip, ip, r3, lsl #8
+                orr     ip, ip, r4, push_hbyte0
+                str     ip, [r1], #4
+                mov     ip, r4, pull_hbyte1
+                bpl     2b
+
+   _BE_ONLY_(   mov     ip, ip, lsr #24         )
+
+3:              tst     r2, #1
+                strb    ip, [r1], #1
+                ldrneh  ip, [r0]
+   _BE_ONLY_(   movne   ip, ip, ror #8          )
+                strneb  ip, [r1], #1
+   _LE_ONLY_(   movne   ip, ip, lsr #8          )
+   _BE_ONLY_(   movne   ip, ip, lsr #24         )
+                strneb  ip, [r1]
+                ldmfd   sp!, {r4, pc}