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mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-25 21:54:06 +08:00
linux-next/include/linux/linkage.h
Linus Torvalds f8ce1faf55 We get rid of the general module prefix confusion with a binary config option,
fix a remove/insert race which Never Happens, and (my favorite) handle the
 case when we have too many modules for a single commandline.  Seriously,
 the kernel is full, please go away!
 
 Cheers,
 Rusty.
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Merge tag 'modules-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux

Pull mudule updates from Rusty Russell:
 "We get rid of the general module prefix confusion with a binary config
  option, fix a remove/insert race which Never Happens, and (my
  favorite) handle the case when we have too many modules for a single
  commandline.  Seriously, the kernel is full, please go away!"

* tag 'modules-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux:
  modpost: fix unwanted VMLINUX_SYMBOL_STR expansion
  X.509: Support parse long form of length octets in Authority Key Identifier
  module: don't unlink the module until we've removed all exposure.
  kernel: kallsyms: memory override issue, need check destination buffer length
  MODSIGN: do not send garbage to stderr when enabling modules signature
  modpost: handle huge numbers of modules.
  modpost: add -T option to read module names from file/stdin.
  modpost: minor cleanup.
  genksyms: pass symbol-prefix instead of arch
  module: fix symbol versioning with symbol prefixes
  CONFIG_SYMBOL_PREFIX: cleanup.
2013-05-05 10:58:06 -07:00

108 lines
2.5 KiB
C

#ifndef _LINUX_LINKAGE_H
#define _LINUX_LINKAGE_H
#include <linux/compiler.h>
#include <linux/stringify.h>
#include <linux/export.h>
#include <asm/linkage.h>
#ifdef __cplusplus
#define CPP_ASMLINKAGE extern "C"
#else
#define CPP_ASMLINKAGE
#endif
#ifndef asmlinkage
#define asmlinkage CPP_ASMLINKAGE
#endif
#ifndef cond_syscall
#define cond_syscall(x) asm( \
".weak " VMLINUX_SYMBOL_STR(x) "\n\t" \
".set " VMLINUX_SYMBOL_STR(x) "," \
VMLINUX_SYMBOL_STR(sys_ni_syscall))
#endif
#ifndef SYSCALL_ALIAS
#define SYSCALL_ALIAS(alias, name) asm( \
".globl " VMLINUX_SYMBOL_STR(alias) "\n\t" \
".set " VMLINUX_SYMBOL_STR(alias) "," \
VMLINUX_SYMBOL_STR(name))
#endif
#define __page_aligned_data __section(.data..page_aligned) __aligned(PAGE_SIZE)
#define __page_aligned_bss __section(.bss..page_aligned) __aligned(PAGE_SIZE)
/*
* For assembly routines.
*
* Note when using these that you must specify the appropriate
* alignment directives yourself
*/
#define __PAGE_ALIGNED_DATA .section ".data..page_aligned", "aw"
#define __PAGE_ALIGNED_BSS .section ".bss..page_aligned", "aw"
/*
* This is used by architectures to keep arguments on the stack
* untouched by the compiler by keeping them live until the end.
* The argument stack may be owned by the assembly-language
* caller, not the callee, and gcc doesn't always understand
* that.
*
* We have the return value, and a maximum of six arguments.
*
* This should always be followed by a "return ret" for the
* protection to work (ie no more work that the compiler might
* end up needing stack temporaries for).
*/
/* Assembly files may be compiled with -traditional .. */
#ifndef __ASSEMBLY__
#ifndef asmlinkage_protect
# define asmlinkage_protect(n, ret, args...) do { } while (0)
#endif
#endif
#ifndef __ALIGN
#define __ALIGN .align 4,0x90
#define __ALIGN_STR ".align 4,0x90"
#endif
#ifdef __ASSEMBLY__
#ifndef LINKER_SCRIPT
#define ALIGN __ALIGN
#define ALIGN_STR __ALIGN_STR
#ifndef ENTRY
#define ENTRY(name) \
.globl name; \
ALIGN; \
name:
#endif
#endif /* LINKER_SCRIPT */
#ifndef WEAK
#define WEAK(name) \
.weak name; \
name:
#endif
#ifndef END
#define END(name) \
.size name, .-name
#endif
/* If symbol 'name' is treated as a subroutine (gets called, and returns)
* then please use ENDPROC to mark 'name' as STT_FUNC for the benefit of
* static analysis tools such as stack depth analyzer.
*/
#ifndef ENDPROC
#define ENDPROC(name) \
.type name, @function; \
END(name)
#endif
#endif
#endif