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| author | Al Viro <viro@zeniv.linux.org.uk> | 2013-01-22 02:16:07 +0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2013-03-04 07:55:19 +0400 |
| commit | e1b5bb6d1236d4ad2084c53aa83dde7cdf6f8eea (patch) | |
| tree | 2431edf19caecce6aad82b4ee4ed2abe45e542e3 /include | |
| parent | 4a0fd5bf0fd0795af8f1be3b261f5cf146a4cb9b (diff) | |
| download | linux-e1b5bb6d1236d4ad2084c53aa83dde7cdf6f8eea.tar.xz | |
consolidate cond_syscall and SYSCALL_ALIAS declarations
take them to asm/linkage.h, with default in linux/linkage.h
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'include')
| -rw-r--r-- | include/asm-generic/unistd.h | 17 | ||||
| -rw-r--r-- | include/linux/linkage.h | 21 | ||||
| -rw-r--r-- | include/linux/syscalls.h | 14 |
3 files changed, 21 insertions, 31 deletions
diff --git a/include/asm-generic/unistd.h b/include/asm-generic/unistd.h index 4077b5d9ff81..0501fa3f783d 100644 --- a/include/asm-generic/unistd.h +++ b/include/asm-generic/unistd.h @@ -9,20 +9,3 @@ #define __ARCH_WANT_STAT64 #define __ARCH_WANT_SYS_LLSEEK #endif - -/* - * "Conditional" syscalls - * - * What we want is __attribute__((weak,alias("sys_ni_syscall"))), - * but it doesn't work on all toolchains, so we just do it by hand - */ -#ifndef cond_syscall -#ifdef CONFIG_SYMBOL_PREFIX -#define __SYMBOL_PREFIX CONFIG_SYMBOL_PREFIX -#else -#define __SYMBOL_PREFIX -#endif -#define cond_syscall(x) asm(".weak\t" __SYMBOL_PREFIX #x "\n\t" \ - ".set\t" __SYMBOL_PREFIX #x "," \ - __SYMBOL_PREFIX "sys_ni_syscall") -#endif diff --git a/include/linux/linkage.h b/include/linux/linkage.h index 807f1e533226..829d66c67fc2 100644 --- a/include/linux/linkage.h +++ b/include/linux/linkage.h @@ -2,6 +2,7 @@ #define _LINUX_LINKAGE_H #include <linux/compiler.h> +#include <linux/stringify.h> #include <asm/linkage.h> #ifdef __cplusplus @@ -14,6 +15,26 @@ #define asmlinkage CPP_ASMLINKAGE #endif +#ifndef SYMBOL_NAME +#ifdef CONFIG_SYMBOL_PREFIX +#define SYMBOL_NAME(x) CONFIG_SYMBOL_PREFIX ## x +#else +#define SYMBOL_NAME(x) x +#endif +#endif +#define __SYMBOL_NAME(x) __stringify(SYMBOL_NAME(x)) + +#ifndef cond_syscall +#define cond_syscall(x) asm(".weak\t" __SYMBOL_NAME(x) \ + "\n\t.set\t" __SYMBOL_NAME(x) "," __SYMBOL_NAME(sys_ni_syscall)); +#endif + +#ifndef SYSCALL_ALIAS +#define SYSCALL_ALIAS(alias, name) \ + asm ("\t.globl " __SYMBOL_NAME(alias) \ + "\n\t.set\t" __SYMBOL_NAME(alias) "," __SYMBOL_NAME(name)) +#endif + #define __page_aligned_data __section(.data..page_aligned) __aligned(PAGE_SIZE) #define __page_aligned_bss __section(.bss..page_aligned) __aligned(PAGE_SIZE) diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h index 3e07b92efbf6..87584373305d 100644 --- a/include/linux/syscalls.h +++ b/include/linux/syscalls.h @@ -183,20 +183,6 @@ extern struct trace_event_functions exit_syscall_print_funcs; #define SYSCALL_DEFINE5(name, ...) SYSCALL_DEFINEx(5, _##name, __VA_ARGS__) #define SYSCALL_DEFINE6(name, ...) SYSCALL_DEFINEx(6, _##name, __VA_ARGS__) -#ifdef CONFIG_PPC64 -#define SYSCALL_ALIAS(alias, name) \ - asm ("\t.globl " #alias "\n\t.set " #alias ", " #name "\n" \ - "\t.globl ." #alias "\n\t.set ." #alias ", ." #name) -#else -#if defined(CONFIG_ALPHA) || defined(CONFIG_MIPS) -#define SYSCALL_ALIAS(alias, name) \ - asm ( #alias " = " #name "\n\t.globl " #alias) -#else -#define SYSCALL_ALIAS(alias, name) \ - asm ("\t.globl " #alias "\n\t.set " #alias ", " #name) -#endif -#endif - #ifdef CONFIG_FTRACE_SYSCALLS #define SYSCALL_DEFINEx(x, sname, ...) \ static const char *types_##sname[] = { \ |