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- From 5e96c73d5dfbdea8d0be82b7f3fc8d6735e5dfa7 Mon Sep 17 00:00:00 2001
- From: Mike Frysinger <vapier@gentoo.org>
- Date: Sun, 17 Jan 2010 17:07:48 -0500
- Subject: [PATCH] add a generic syscall() fallback
- Signed-off-by: Mike Frysinger <vapier@gentoo.org>
- ---
- src/syscall-generic.h | 29 +++++++++++++++++++++++++++++
- src/syscall.h | 3 ++-
- 2 files changed, 31 insertions(+), 1 deletions(-)
- create mode 100644 src/syscall-generic.h
- diff --git a/src/syscall-generic.h b/src/syscall-generic.h
- new file mode 100644
- index 0000000..24d7c7c
- --- /dev/null
- +++ b/src/syscall-generic.h
- @@ -0,0 +1,29 @@
- +#include <errno.h>
- +#include <unistd.h>
- +#include <sys/syscall.h>
- +
- +#define _body_io_syscall(sname, args...) \
- +{ \
- + int ret = syscall(__NR_##sname, ## args); \
- + return ret < 0 ? -errno : ret; \
- +}
- +
- +#define io_syscall1(type,fname,sname,type1,arg1) \
- +type fname(type1 arg1) \
- +_body_io_syscall(sname, (long)arg1)
- +
- +#define io_syscall2(type,fname,sname,type1,arg1,type2,arg2) \
- +type fname(type1 arg1,type2 arg2) \
- +_body_io_syscall(sname, (long)arg1, (long)arg2)
- +
- +#define io_syscall3(type,fname,sname,type1,arg1,type2,arg2,type3,arg3) \
- +type fname(type1 arg1,type2 arg2,type3 arg3) \
- +_body_io_syscall(sname, (long)arg1, (long)arg2, (long)arg3)
- +
- +#define io_syscall4(type,fname,sname,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \
- +type fname (type1 arg1, type2 arg2, type3 arg3, type4 arg4) \
- +_body_io_syscall(sname, (long)arg1, (long)arg2, (long)arg3, (long)arg4)
- +
- +#define io_syscall5(type,fname,sname,type1,arg1,type2,arg2,type3,arg3,type4,arg4, type5,arg5) \
- +type fname (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5) \
- +_body_io_syscall(sname, (long)arg1, (long)arg2, (long)arg3, (long)arg4, (long)arg5)
- diff --git a/src/syscall.h b/src/syscall.h
- index 78becfe..d954af0 100644
- --- a/src/syscall.h
- +++ b/src/syscall.h
- @@ -25,5 +25,6 @@
- #elif defined(__arm__)
- #include "syscall-arm.h"
- #else
- -#error "add syscall-arch.h"
- +#warning "using generic syscall method"
- +#include "syscall-generic.h"
- #endif
- --
- 1.7.3.1
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