0a6a1f1d05
This brings our tree to NetBSD 7.0, as found on -current on the 10-10-2015. This updates: - LLVM to 3.6.1 - GCC to GCC 5.1 - Replace minix/commands/zdump with usr.bin/zdump - external/bsd/libelf has moved to /external/bsd/elftoolchain/ - Import ctwm - Drop sprintf from libminc Change-Id: I149836ac18e9326be9353958bab9b266efb056f0
71 lines
1.6 KiB
C
71 lines
1.6 KiB
C
/* $NetBSD: SYS.h,v 1.4 2015/01/12 02:48:20 dennis Exp $ */
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#include <machine/asm.h>
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#include <sys/syscall.h>
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/*
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* Inline what __cerror() is generally used to do since branching
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* to __cerror() can't be done reliably with the powerpc64 ABI.
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*/
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#ifdef _REENTRANT
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#define _DO_CERROR_SF_SZ (SF_SZ + SF_ALIGN(8))
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#define _DO_CERROR() mflr %r0 ;\
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streg %r31,-8(%r1) ;\
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streg %r0,SF_LR(%r1) ;\
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stptru %r1,-_DO_CERROR_SF_SZ(%r1) ;\
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mr %r31,%r3 ;\
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bl PIC_PLT(_C_LABEL(__errno)) ;\
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nop ;\
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stint %r31,0(%r3) ;\
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addi %r1,%r1,_DO_CERROR_SF_SZ ;\
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ldreg %r0,SF_LR(%r1) ;\
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ldreg %r31,-8(%r1) ;\
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mtlr %r0 ;\
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li %r3,-1 ;\
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li %r4,-1 ;\
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blr
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#else /* !_REENTRANT */
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#define _DO_CERROR() lwz %r4,_C_LABEL(errno)@got(%r2) ;\
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stw %r3,0(%r4) ;\
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li %r3,-1 ;\
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li %r4,-1 ;\
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blr
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#endif /* _REENTRANT */
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/* Clearly BRANCH_TO_CERROR() no longer does that... */
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#define BRANCH_TO_CERROR() _DO_CERROR()
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#define _DOSYSCALL(x) li %r0,(SYS_ ## x) ;\
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sc
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#define _SYSCALL_NOERROR(x,y) .text ;\
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.p2align 2 ;\
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ENTRY(x) ;\
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_DOSYSCALL(y)
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#define _SYSCALL(x,y) .text ;\
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.p2align 2 ;\
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2: _DO_CERROR() ;\
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_SYSCALL_NOERROR(x,y) ;\
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bso 2b
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#define SYSCALL_NOERROR(x) _SYSCALL_NOERROR(x,x)
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#define SYSCALL(x) _SYSCALL(x,x)
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#define PSEUDO_NOERROR(x,y) _SYSCALL_NOERROR(x,y) ;\
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blr ;\
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END(x)
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#define PSEUDO(x,y) _SYSCALL_NOERROR(x,y) ;\
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bnslr ;\
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_DO_CERROR() ;\
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END(x)
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#define RSYSCALL_NOERROR(x) PSEUDO_NOERROR(x,x)
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#define RSYSCALL(x) PSEUDO(x,x)
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#define WSYSCALL(weak,strong) WEAK_ALIAS(weak,strong) ;\
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PSEUDO(strong,weak)
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