mirror of
git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs.git
synced 2026-11-09 11:00:49 +01:00
Jiri Slaby
6dcc5627f6
These are all functions which are invoked from elsewhere, so annotate them as global using the new SYM_FUNC_START and their ENDPROC's by SYM_FUNC_END. Make sure ENTRY/ENDPROC is not defined on X86_64, given these were the last users. Signed-off-by: Jiri Slaby <[email protected]> Signed-off-by: Borislav Petkov <[email protected]> Reviewed-by: Rafael J. Wysocki <[email protected]> [hibernate] Reviewed-by: Boris Ostrovsky <[email protected]> [xen bits] Acked-by: Herbert Xu <[email protected]> [crypto] Cc: Allison Randal <[email protected]> Cc: Andrey Ryabinin <[email protected]> Cc: Andy Lutomirski <[email protected]> Cc: Andy Shevchenko <[email protected]> Cc: Ard Biesheuvel <[email protected]> Cc: Armijn Hemel <[email protected]> Cc: Cao jin <[email protected]> Cc: Darren Hart <[email protected]> Cc: Dave Hansen <[email protected]> Cc: "David S. Miller" <[email protected]> Cc: Enrico Weigelt <[email protected]> Cc: Greg Kroah-Hartman <[email protected]> Cc: Herbert Xu <[email protected]> Cc: "H. Peter Anvin" <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Jim Mattson <[email protected]> Cc: Joerg Roedel <[email protected]> Cc: Josh Poimboeuf <[email protected]> Cc: Juergen Gross <[email protected]> Cc: Kate Stewart <[email protected]> Cc: "Kirill A. Shutemov" <[email protected]> Cc: kvm ML <[email protected]> Cc: Len Brown <[email protected]> Cc: [email protected] Cc: [email protected] Cc: linux-efi <[email protected]> Cc: [email protected] Cc: [email protected] Cc: Mark Rutland <[email protected]> Cc: Matt Fleming <[email protected]> Cc: Paolo Bonzini <[email protected]> Cc: Pavel Machek <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: [email protected] Cc: "Radim Krčmář" <[email protected]> Cc: Sean Christopherson <[email protected]> Cc: Stefano Stabellini <[email protected]> Cc: "Steven Rostedt (VMware)" <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: Vitaly Kuznetsov <[email protected]> Cc: Wanpeng Li <[email protected]> Cc: Wei Huang <[email protected]> Cc: x86-ml <[email protected]> Cc: [email protected] Cc: Xiaoyao Li <[email protected]> Link: https://lkml.kernel.org/r/[email protected]
108 lines
2.2 KiB
ArmAsm
108 lines
2.2 KiB
ArmAsm
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* __put_user functions.
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*
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* (C) Copyright 2005 Linus Torvalds
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* (C) Copyright 2005 Andi Kleen
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* (C) Copyright 2008 Glauber Costa
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*
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* These functions have a non-standard call interface
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* to make them more efficient, especially as they
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* return an error value in addition to the "real"
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* return value.
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*/
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#include <linux/linkage.h>
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#include <asm/thread_info.h>
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#include <asm/errno.h>
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#include <asm/asm.h>
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#include <asm/smap.h>
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#include <asm/export.h>
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/*
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* __put_user_X
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*
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* Inputs: %eax[:%edx] contains the data
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* %ecx contains the address
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*
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* Outputs: %eax is error code (0 or -EFAULT)
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*
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* These functions should not modify any other registers,
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* as they get called from within inline assembly.
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*/
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#define ENTER mov PER_CPU_VAR(current_task), %_ASM_BX
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.text
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SYM_FUNC_START(__put_user_1)
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ENTER
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cmp TASK_addr_limit(%_ASM_BX),%_ASM_CX
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jae .Lbad_put_user
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ASM_STAC
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1: movb %al,(%_ASM_CX)
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xor %eax,%eax
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ASM_CLAC
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ret
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SYM_FUNC_END(__put_user_1)
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EXPORT_SYMBOL(__put_user_1)
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SYM_FUNC_START(__put_user_2)
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ENTER
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mov TASK_addr_limit(%_ASM_BX),%_ASM_BX
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sub $1,%_ASM_BX
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cmp %_ASM_BX,%_ASM_CX
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jae .Lbad_put_user
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ASM_STAC
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2: movw %ax,(%_ASM_CX)
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xor %eax,%eax
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ASM_CLAC
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ret
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SYM_FUNC_END(__put_user_2)
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EXPORT_SYMBOL(__put_user_2)
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SYM_FUNC_START(__put_user_4)
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ENTER
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mov TASK_addr_limit(%_ASM_BX),%_ASM_BX
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sub $3,%_ASM_BX
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cmp %_ASM_BX,%_ASM_CX
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jae .Lbad_put_user
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ASM_STAC
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3: movl %eax,(%_ASM_CX)
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xor %eax,%eax
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ASM_CLAC
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ret
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SYM_FUNC_END(__put_user_4)
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EXPORT_SYMBOL(__put_user_4)
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SYM_FUNC_START(__put_user_8)
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ENTER
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mov TASK_addr_limit(%_ASM_BX),%_ASM_BX
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sub $7,%_ASM_BX
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cmp %_ASM_BX,%_ASM_CX
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jae .Lbad_put_user
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ASM_STAC
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4: mov %_ASM_AX,(%_ASM_CX)
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#ifdef CONFIG_X86_32
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5: movl %edx,4(%_ASM_CX)
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#endif
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xor %eax,%eax
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ASM_CLAC
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RET
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SYM_FUNC_END(__put_user_8)
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EXPORT_SYMBOL(__put_user_8)
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SYM_CODE_START_LOCAL(.Lbad_put_user_clac)
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ASM_CLAC
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.Lbad_put_user:
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movl $-EFAULT,%eax
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RET
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SYM_CODE_END(.Lbad_put_user_clac)
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_ASM_EXTABLE_UA(1b, .Lbad_put_user_clac)
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_ASM_EXTABLE_UA(2b, .Lbad_put_user_clac)
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_ASM_EXTABLE_UA(3b, .Lbad_put_user_clac)
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_ASM_EXTABLE_UA(4b, .Lbad_put_user_clac)
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#ifdef CONFIG_X86_32
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_ASM_EXTABLE_UA(5b, .Lbad_put_user_clac)
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#endif
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