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Added new macros:

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SYSTRAP(x):             Expands to the code used to call syscall x.
				This is used to simplify other macros.

        SYSCALL_NOERROR(x):     Like SYSCALL except that "x" is a syscall
				that can never fail.

        RSYSCALL_NOERROR(x):    Like RSYSCALL except that "x" is a syscall
				that can never fail.
This commit is contained in:
jtc 1996-10-17 22:47:14 +00:00
parent 313e12dec4
commit 7228c89e17
1 changed files with 27 additions and 9 deletions
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36
lib/libc/arch/arm32/SYS.h
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@ -1,4 +1,4 @@
/* $NetBSD: SYS.h,v 1.3 1996/08/07 17:39:44 mark Exp $ */
/* $NetBSD: SYS.h,v 1.4 1996/10/17 22:47:14 jtc Exp $ */
/*-
* Copyright (c) 1990 The Regents of the University of California.
@ -42,16 +42,34 @@
#include <sys/syscall.h>
#ifdef __STDC__
#define SYSCALL(x) .text; .align 0; ENTRY(x) ; swi SYS_ ## x; bcs cerror;
#define RSYSCALL(x) SYSCALL(x) ; mov r15, r14
#define PSEUDO(x, y) .text; .align 0; ENTRY(x); swi SYS_ ## y; mov r15, r14
#define SYSTRAP(x) swi SYS_ ## x
#else
#define SYSTRAP(x) swi SYS_/**/x
#endif
#else /* !__STDC__ */
#define SYSCALL(x) \
.text; .align 0; \
ENTRY(x) ; \
SYSTRAP(x); \
bcs cerror;
#define SYSCALL(x) .text; .align 0; ENTRY(x) ; swi SYS_/**/x; bcs cerror;
#define RSYSCALL(x) SYSCALL(x) ; mov r15, r14
#define PSEUDO(x, y) .text; .align 0; ENTRY(x); swi SYS_/**/y; mov r15, r14
#define RSYSCALL(x) \
SYSCALL(x); \
mov r15, r14
#endif /* __STDC__ */
#define SYSCALL_NOERROR(x) \
.text; .align 0; \
ENTRY(x); \
SYSTRAP(x)
#define RSYSCALL_NOERROR(x) \
SYSCALL_NOERROR(x); \
mov r15, r14
#define PSEUDO(x, y) \
.text; .align 0; \
ENTRY(x); \
SYSTRAP(y); \
mov r15, r14
.globl cerror