linux-pinenote/arch/mips/lib/strlen_user.S

/*
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file "COPYING" in the main directory of this archive
 * for more details.
 *
 * Copyright (c) 1996, 1998, 1999, 2004 by Ralf Baechle
 * Copyright (c) 1999 Silicon Graphics, Inc.
 */
#include <asm/asm.h>
#include <asm/asm-offsets.h>
#include <asm/regdef.h>

#define EX(insn,reg,addr,handler)			\
9:	insn	reg, addr;				\
	.section __ex_table,"a";			\
	PTR	9b, handler;				\
	.previous

/*
 * Return the size of a string (including the ending 0)
 *
 * Return 0 for error
 */
LEAF(__strlen_user_asm)
	LONG_L		v0, TI_ADDR_LIMIT($28)	# pointer ok?
	and		v0, a0
	bnez		v0, .Lfault

FEXPORT(__strlen_user_nocheck_asm)
	move		v0, a0
1:	EX(lb, t0, (v0), .Lfault)
	PTR_ADDIU	v0, 1
	bnez		t0, 1b
	PTR_SUBU	v0, a0
	jr		ra
	END(__strlen_user_asm)

.Lfault:	move		v0, zero
	jr		ra
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! 2005-04-16 15:20:36 -07:00			`/*`
			`* This file is subject to the terms and conditions of the GNU General Public`
			`* License. See the file "COPYING" in the main directory of this archive`
			`* for more details.`
			`*`
			`* Copyright (c) 1996, 1998, 1999, 2004 by Ralf Baechle`
			`* Copyright (c) 1999 Silicon Graphics, Inc.`
			`*/`
			`#include <asm/asm.h>`
kbuild: mips use generic asm-offsets.h support Removed obsolete stuff from arch makefile. mips had a special rule for generating asm-offsets.h so preserved it using an architecture specific hook in top-level Kbuild file. Renamed .h file to asm-offsets.h Signed-off-by: Sam Ravnborg <sam@ravnborg.org> 2005-09-09 22:32:31 +02:00			`#include <asm/asm-offsets.h>`
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! 2005-04-16 15:20:36 -07:00			`#include <asm/regdef.h>`

			`#define EX(insn,reg,addr,handler) \`
			`9: insn reg, addr; \`
			`.section __ex_table,"a"; \`
			`PTR 9b, handler; \`
			`.previous`

			`/*`
			`* Return the size of a string (including the ending 0)`
			`*`
			`* Return 0 for error`
			`*/`
			`LEAF(__strlen_user_asm)`
			`LONG_L v0, TI_ADDR_LIMIT($28) # pointer ok?`
			`and v0, a0`
[MIPS] Eleminate local symbols from the symbol table. These symbols appear in oprofile output, stacktraces and similar but only make the output harder to read. Many identical symbol names such as "both_aligned" were also being used in multiple source files making it impossible to see which file actually was meant. So let's get rid of them. Signed-off-by: Ralf Baechle <ralf@linux-mips.org> 2008-01-29 10:14:59 +00:00			`bnez v0, .Lfault`
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! 2005-04-16 15:20:36 -07:00
			`FEXPORT(__strlen_user_nocheck_asm)`
			`move v0, a0`
[MIPS] Eleminate local symbols from the symbol table. These symbols appear in oprofile output, stacktraces and similar but only make the output harder to read. Many identical symbol names such as "both_aligned" were also being used in multiple source files making it impossible to see which file actually was meant. So let's get rid of them. Signed-off-by: Ralf Baechle <ralf@linux-mips.org> 2008-01-29 10:14:59 +00:00			`1: EX(lb, t0, (v0), .Lfault)`
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! 2005-04-16 15:20:36 -07:00			`PTR_ADDIU v0, 1`
			`bnez t0, 1b`
			`PTR_SUBU v0, a0`
			`jr ra`
			`END(__strlen_user_asm)`

[MIPS] Eleminate local symbols from the symbol table. These symbols appear in oprofile output, stacktraces and similar but only make the output harder to read. Many identical symbol names such as "both_aligned" were also being used in multiple source files making it impossible to see which file actually was meant. So let's get rid of them. Signed-off-by: Ralf Baechle <ralf@linux-mips.org> 2008-01-29 10:14:59 +00:00			`.Lfault: move v0, zero`
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! 2005-04-16 15:20:36 -07:00			`jr ra`