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author | Russell King <rmk@dyn-67.arm.linux.org.uk> | 2008-04-19 17:17:29 +0100 |
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committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2008-04-19 17:17:29 +0100 |
commit | adf6d34e460387ee3e8f1e1875d52bff51212c7d (patch) | |
tree | 88ef100143e6184103a608f82dfd232bf6376eaf /include/linux/linkage.h | |
parent | d1964dab60ce7c104dd21590e987a8787db18051 (diff) | |
parent | 3760d31f11bfbd0ead9eaeb8573e0602437a9d7c (diff) |
Merge branch 'omap2-upstream' into devel
Diffstat (limited to 'include/linux/linkage.h')
-rw-r--r-- | include/linux/linkage.h | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/include/linux/linkage.h b/include/linux/linkage.h index 0592936344c4..2119610b24f8 100644 --- a/include/linux/linkage.h +++ b/include/linux/linkage.h @@ -17,8 +17,24 @@ # define asmregparm #endif -#ifndef prevent_tail_call -# define prevent_tail_call(ret) do { } while (0) +/* + * 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 |