Linux-2.6.12-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!
diff --git a/arch/arm26/lib/putuser.S b/arch/arm26/lib/putuser.S
new file mode 100644
index 0000000..87588cb
--- /dev/null
+++ b/arch/arm26/lib/putuser.S
@@ -0,0 +1,109 @@
+/*
+ * linux/arch/arm26/lib/putuser.S
+ *
+ * Copyright (C) 2001 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.
+ *
+ * Idea from x86 version, (C) Copyright 1998 Linus Torvalds
+ *
+ * These functions have a non-standard call interface to make
+ * them more efficient, especially as they return an error
+ * value in addition to the "real" return value.
+ *
+ * __put_user_X
+ *
+ * Inputs: r0 contains the address
+ * r1, r2 contains the value
+ * Outputs: r0 is the error code
+ * lr corrupted
+ *
+ * No other registers must be altered. (see include/asm-arm/uaccess.h
+ * for specific ASM register usage).
+ *
+ * Note that ADDR_LIMIT is either 0 or 0xc0000000
+ * Note also that it is intended that __put_user_bad is not global.
+ */
+#include <asm/asm_offsets.h>
+#include <asm/thread_info.h>
+#include <asm/errno.h>
+
+ .global __put_user_1
+__put_user_1:
+ bic r2, sp, #0x1f00
+ bic r2, r2, #0x00ff
+ str lr, [sp, #-4]!
+ ldr r2, [r2, #TI_ADDR_LIMIT]
+ sub r2, r2, #1
+ cmp r0, r2
+ bge __put_user_bad
+1: cmp r0, #0x02000000
+ strlsbt r1, [r0]
+ strgeb r1, [r0]
+ mov r0, #0
+ ldmfd sp!, {pc}^
+
+ .global __put_user_2
+__put_user_2:
+ bic r2, sp, #0x1f00
+ bic r2, r2, #0x00ff
+ str lr, [sp, #-4]!
+ ldr r2, [r2, #TI_ADDR_LIMIT]
+ sub r2, r2, #2
+ cmp r0, r2
+ bge __put_user_bad
+2: cmp r0, #0x02000000
+ strlsbt r1, [r0], #1
+ strgeb r1, [r0], #1
+ mov r1, r1, lsr #8
+3: strlsbt r1, [r0]
+ strgeb r1, [r0]
+ mov r0, #0
+ ldmfd sp!, {pc}^
+
+ .global __put_user_4
+__put_user_4:
+ bic r2, sp, #0x1f00
+ bic r2, r2, #0x00ff
+ str lr, [sp, #-4]!
+ ldr r2, [r2, #TI_ADDR_LIMIT]
+ sub r2, r2, #4
+ cmp r0, r2
+4: bge __put_user_bad
+ cmp r0, #0x02000000
+ strlst r1, [r0]
+ strge r1, [r0]
+ mov r0, #0
+ ldmfd sp!, {pc}^
+
+ .global __put_user_8
+__put_user_8:
+ bic ip, sp, #0x1f00
+ bic ip, ip, #0x00ff
+ str lr, [sp, #-4]!
+ ldr ip, [ip, #TI_ADDR_LIMIT]
+ sub ip, ip, #8
+ cmp r0, ip
+ bge __put_user_bad
+ cmp r0, #0x02000000
+5: strlst r1, [r0], #4
+6: strlst r2, [r0]
+ strge r1, [r0], #4
+ strge r2, [r0]
+ mov r0, #0
+ ldmfd sp!, {pc}^
+
+__put_user_bad:
+ mov r0, #-EFAULT
+ mov pc, lr
+
+.section __ex_table, "a"
+ .long 1b, __put_user_bad
+ .long 2b, __put_user_bad
+ .long 3b, __put_user_bad
+ .long 4b, __put_user_bad
+ .long 5b, __put_user_bad
+ .long 6b, __put_user_bad
+.previous