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internal/syscall.h: add syscall_arg_t macro

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some 32-on-64 archs require that the actual syscall args be long long.
in that case syscall_arch.h can define syscall_arg_t to whatever it needs
and syscall.h picks it up.
all other archs just use long as usual.
This commit is contained in:
rofl0r 2014-01-07 16:49:23 +01:00
parent bf84967cae
commit 5cc1d920ba
1 changed files with 11 additions and 6 deletions
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17
src/internal/syscall.h
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@ -1,12 +1,6 @@
#ifndef _INTERNAL_SYSCALL_H
#define _INTERNAL_SYSCALL_H
#if defined(__PIC__) && (100*__GNUC__+__GNUC_MINOR__ >= 303)
__attribute__((visibility("protected")))
#endif
long __syscall_ret(unsigned long), __syscall(long, ...),
__syscall_cp(long, long, long, long, long, long, long);
#include <sys/syscall.h>
#include "syscall_arch.h"
@ -14,6 +8,17 @@ long __syscall_ret(unsigned long), __syscall(long, ...),
#define __scc(X) (long) (X)
#endif
#ifndef syscall_arg_t
#define syscall_arg_t long
#endif
#if defined(__PIC__) && (100*__GNUC__+__GNUC_MINOR__ >= 303)
__attribute__((visibility("protected")))
#endif
long __syscall_ret(unsigned long), __syscall(syscall_arg_t, ...),
__syscall_cp(syscall_arg_t, syscall_arg_t, syscall_arg_t, syscall_arg_t,
syscall_arg_t, syscall_arg_t, syscall_arg_t);
#define __syscall1(n,a) __syscall1(n,__scc(a))
#define __syscall2(n,a,b) __syscall2(n,__scc(a),__scc(b))
#define __syscall3(n,a,b,c) __syscall3(n,__scc(a),__scc(b),__scc(c))