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f55d966536
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>
16 lines
462 B
C
16 lines
462 B
C
#ifndef _ASM_POWERPC_LINKAGE_H
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#define _ASM_POWERPC_LINKAGE_H
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#include <asm/types.h>
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#ifdef PPC64_ELF_ABI_v1
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#define cond_syscall(x) \
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asm ("\t.weak " #x "\n\t.set " #x ", sys_ni_syscall\n" \
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"\t.weak ." #x "\n\t.set ." #x ", .sys_ni_syscall\n")
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#define SYSCALL_ALIAS(alias, name) \
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asm ("\t.globl " #alias "\n\t.set " #alias ", " #name "\n" \
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"\t.globl ." #alias "\n\t.set ." #alias ", ." #name)
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#endif
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#endif /* _ASM_POWERPC_LINKAGE_H */
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