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OpenCloudOS-Kernel/arch/powerpc/include/asm/linkage.h

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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>
2013-01-22 06:16:07 +08:00
#ifndef _ASM_POWERPC_LINKAGE_H
#define _ASM_POWERPC_LINKAGE_H
powerpc: Define and use PPC64_ELF_ABI_v2/v1 We're approaching 20 locations where we need to check for ELF ABI v2. That's fine, except the logic is a bit awkward, because we have to check that _CALL_ELF is defined and then what its value is. So check it once in asm/types.h and define PPC64_ELF_ABI_v2 when ELF ABI v2 is detected. We also have a few places where what we're really trying to check is that we are using the 64-bit v1 ABI, ie. function descriptors. So also add a #define for that, which simplifies several checks. Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-06-07 00:56:10 +08:00
#include <asm/types.h>
#ifdef PPC64_ELF_ABI_v1
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>
2013-01-22 06:16:07 +08:00
#define cond_syscall(x) \
asm ("\t.weak " #x "\n\t.set " #x ", sys_ni_syscall\n" \
"\t.weak ." #x "\n\t.set ." #x ", .sys_ni_syscall\n")
#define SYSCALL_ALIAS(alias, name) \
asm ("\t.globl " #alias "\n\t.set " #alias ", " #name "\n" \
"\t.globl ." #alias "\n\t.set ." #alias ", ." #name)
#endif
#endif /* _ASM_POWERPC_LINKAGE_H */