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OpenCloudOS-Kernel/arch/arm/lib/csumpartialcopy.S

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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!
2005-04-17 06:20:36 +08:00
/*
* linux/arch/arm/lib/csumpartialcopy.S
*
* Copyright (C) 1995-1998 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>
.text
/* Function: __u32 csum_partial_copy_nocheck(const char *src, char *dst, int len, __u32 sum)
* Params : r0 = src, r1 = dst, r2 = len, r3 = checksum
* Returns : r0 = new checksum
*/
.macro save_regs
[ARM] 5231/1: Do not save the frame pointer in the csum_partial_copy_* functions Since the other assembly functions do not seem to save the frame pointer onto the stack, this patch changes the csum_partial_copy_* functions to behave in the same way. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-08-30 01:31:27 +08:00
stmfd sp!, {r1, r4 - r8, lr}
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!
2005-04-17 06:20:36 +08:00
.endm
[ARM] 3256/1: Make the function-returning ldm's use sp as the base register Patch from Catalin Marinas If the low interrupt latency mode is enabled for the CPU (from ARMv6 onwards), the ldm/stm instructions are no longer atomic. An ldm instruction restoring the sp and pc registers can be interrupted immediately after sp was updated but before the pc. If this happens, the CPU restores the base register to the value before the ldm instruction but if the base register is not sp, the interrupt routine will corrupt the stack and the restarted ldm instruction will load garbage. Note that future ARM cores might always run in the low interrupt latency mode. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-01-13 00:53:51 +08:00
.macro load_regs
[ARM] 5231/1: Do not save the frame pointer in the csum_partial_copy_* functions Since the other assembly functions do not seem to save the frame pointer onto the stack, this patch changes the csum_partial_copy_* functions to behave in the same way. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-08-30 01:31:27 +08:00
ldmfd sp!, {r1, r4 - r8, pc}
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!
2005-04-17 06:20:36 +08:00
.endm
.macro load1b, reg1
ldrb \reg1, [r0], #1
.endm
.macro load2b, reg1, reg2
ldrb \reg1, [r0], #1
ldrb \reg2, [r0], #1
.endm
.macro load1l, reg1
ldr \reg1, [r0], #4
.endm
.macro load2l, reg1, reg2
ldr \reg1, [r0], #4
ldr \reg2, [r0], #4
.endm
.macro load4l, reg1, reg2, reg3, reg4
ldmia r0!, {\reg1, \reg2, \reg3, \reg4}
.endm
#define FN_ENTRY ENTRY(csum_partial_copy_nocheck)
[ARM] 5227/1: Add the ENDPROC declarations to the .S files This declaration specifies the "function" type and size for various assembly functions, mainly needed for generating the correct branch instructions in Thumb-2. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-08-28 18:22:32 +08:00
#define FN_EXIT ENDPROC(csum_partial_copy_nocheck)
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!
2005-04-17 06:20:36 +08:00
#include "csumpartialcopygeneric.S"