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ARC: Allow conditional multiple inclusion of uapi/asm/unistd.h

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Commit 97bc386fc1 "ARC: Add guard macro to uapi/asm/unistd.h"
inhibited multiple inclusion of ARCH unistd.h. This however hosed the system
since Generic syscall table generator relies on it being included twice,
and in lack-of an empty table was emitted by C preprocessor.

Fix that by allowing one exception to rule for the special case (just
like Xtensa)

Suggested-by: Chen Gang <gang.chen.5i5j@gmail.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
This commit is contained in:
Vineet Gupta 2013-12-19 18:55:58 +05:30
parent 319e2e3f63
commit 1e01c7eb7c
1 changed files with 7 additions and 1 deletions
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8
arch/arc/include/uapi/asm/unistd.h
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@ -8,7 +8,11 @@
/******** no-legacy-syscalls-ABI *******/ /******** no-legacy-syscalls-ABI *******/
#ifndef _UAPI_ASM_ARC_UNISTD_H /*
* Non-typical guard macro to enable inclusion twice in ARCH sys.c
* That is how the Generic syscall wrapper generator works
*/
#if !defined(_UAPI_ASM_ARC_UNISTD_H) || defined(__SYSCALL)
#define _UAPI_ASM_ARC_UNISTD_H #define _UAPI_ASM_ARC_UNISTD_H
#define __ARCH_WANT_SYS_EXECVE #define __ARCH_WANT_SYS_EXECVE
@ -36,4 +40,6 @@ __SYSCALL(__NR_arc_gettls, sys_arc_gettls)
#define __NR_sysfs (__NR_arch_specific_syscall + 3) #define __NR_sysfs (__NR_arch_specific_syscall + 3)
__SYSCALL(__NR_sysfs, sys_sysfs) __SYSCALL(__NR_sysfs, sys_sysfs)
#undef __SYSCALL
#endif #endif