7ab152470e
Stephen Rothwell reported:
|Today's linux-next build (x86_64 allmodconfig) produced this warning:
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|In file included from drivers/char/epca.c:49:
|drivers/char/digiFep1.h:7:1: warning: "GLOBAL" redefined
|In file included from include/linux/linkage.h:5,
| from include/linux/kernel.h:11,
| from arch/x86/include/asm/system.h:10,
| from arch/x86/include/asm/processor.h:17,
| from include/linux/prefetch.h:14,
| from include/linux/list.h:6,
| from include/linux/module.h:9,
| from drivers/char/epca.c:29:
|arch/x86/include/asm/linkage.h:55:1: warning: this is the location of the previous definition
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|Probably introduced by commit 95695547a7
|("x86: asm linkage - introduce GLOBAL macro") from the x86 tree.
Any assembler specific snippets being placed in headers
are to be protected by __ASSEMBLY__. Fixed.
Also move __ALIGN definition under the same protection as well.
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
LKML-Reference: <20090306160833.GB7420@localhost>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
70 lines
2.2 KiB
C
70 lines
2.2 KiB
C
#ifndef _ASM_X86_LINKAGE_H
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#define _ASM_X86_LINKAGE_H
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#undef notrace
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#define notrace __attribute__((no_instrument_function))
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#ifdef CONFIG_X86_32
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#define asmlinkage CPP_ASMLINKAGE __attribute__((regparm(0)))
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/*
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* For 32-bit UML - mark functions implemented in assembly that use
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* regparm input parameters:
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*/
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#define asmregparm __attribute__((regparm(3)))
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/*
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* Make sure the compiler doesn't do anything stupid with the
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* arguments on the stack - they are owned by the *caller*, not
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* the callee. This just fools gcc into not spilling into them,
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* and keeps it from doing tailcall recursion and/or using the
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* stack slots for temporaries, since they are live and "used"
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* all the way to the end of the function.
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*
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* NOTE! On x86-64, all the arguments are in registers, so this
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* only matters on a 32-bit kernel.
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*/
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#define asmlinkage_protect(n, ret, args...) \
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__asmlinkage_protect##n(ret, ##args)
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#define __asmlinkage_protect_n(ret, args...) \
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__asm__ __volatile__ ("" : "=r" (ret) : "0" (ret), ##args)
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#define __asmlinkage_protect0(ret) \
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__asmlinkage_protect_n(ret)
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#define __asmlinkage_protect1(ret, arg1) \
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__asmlinkage_protect_n(ret, "g" (arg1))
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#define __asmlinkage_protect2(ret, arg1, arg2) \
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__asmlinkage_protect_n(ret, "g" (arg1), "g" (arg2))
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#define __asmlinkage_protect3(ret, arg1, arg2, arg3) \
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__asmlinkage_protect_n(ret, "g" (arg1), "g" (arg2), "g" (arg3))
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#define __asmlinkage_protect4(ret, arg1, arg2, arg3, arg4) \
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__asmlinkage_protect_n(ret, "g" (arg1), "g" (arg2), "g" (arg3), \
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"g" (arg4))
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#define __asmlinkage_protect5(ret, arg1, arg2, arg3, arg4, arg5) \
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__asmlinkage_protect_n(ret, "g" (arg1), "g" (arg2), "g" (arg3), \
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"g" (arg4), "g" (arg5))
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#define __asmlinkage_protect6(ret, arg1, arg2, arg3, arg4, arg5, arg6) \
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__asmlinkage_protect_n(ret, "g" (arg1), "g" (arg2), "g" (arg3), \
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"g" (arg4), "g" (arg5), "g" (arg6))
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#endif /* CONFIG_X86_32 */
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#ifdef __ASSEMBLY__
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#define GLOBAL(name) \
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.globl name; \
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name:
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#ifdef CONFIG_X86_64
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#define __ALIGN .p2align 4,,15
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#define __ALIGN_STR ".p2align 4,,15"
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#endif
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#ifdef CONFIG_X86_ALIGNMENT_16
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#define __ALIGN .align 16,0x90
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#define __ALIGN_STR ".align 16,0x90"
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#endif
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#endif /* __ASSEMBLY__ */
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#endif /* _ASM_X86_LINKAGE_H */
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