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/* generally used "internal syscalls"
Copyright (C) 2009 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#ifndef KFREEBSD_INTERNAL_SYSCALLS_H
#define KFREEBSD_INTERNAL_SYSCALLS_H
#include <sys/syscall.h>
/*
for now, we do not care whether syscall succeeded,
we do not have defined
INTERNAL_SYSCALL_ERROR_P and INTERNAL_SYSCALL_ERRNO
we do not store errno at all
to be sure, we return void
*/
#undef INTERNAL_SYSCALL_DECL
#undef INTERNAL_SYSCALL_NCS
#undef INTERNAL_SYSCALL
#undef INTERNAL_SYSCALL_ERROR_P
#undef INTERNAL_SYSCALL_ERRNO
#define INTERNAL_SYSCALL_DECL(err) \
do { } while (0)
#define INTERNAL_SYSCALL(name, err, nr, args...) \
INTERNAL_SYSCALL_##name(name, err, nr, ##args)
#define INTERNAL_SYSCALL_clock_gettime(name, err, nr, clkid, ts) \
(void)({ \
register long int _a1 = (long int) (clkid); \
register long int _a2 = (long int) (ts); \
register long int result; \
register long int _trash; \
asm volatile ( \
"pushl %4\n\t" \
"pushl %3\n\t" \
"pushl %2\n\t" \
"int $0x80\n\t" \
"addl $12,%%esp\n\t" \
: "=a" (result), \
"=d" (_trash) \
: "0" ((long int) SYS_##name), \
"ri" (_a1), \
"ri" (_a2) \
: "memory", "cc" ); \
result; \
})
#define INTERNAL_SYSCALL_close(name, err, nr, fd) \
(void)({ \
register long int _a1 = (long int) (fd); \
register long int result; \
asm volatile ( \
"pushl %2\n\t" \
"pushl %1\n\t" \
"int $0x80\n\t" \
"popl %2\n\t" \
"popl %2\n\t" \
: "=a" (result) \
: "0" ((long int) SYS_##name), \
"d" (_a1) \
: "memory", "cc" ); \
result; \
})
#define INTERNAL_SYSCALL_kill(name, err, nr, pid, sig) \
(void)({ \
register long int _a1 = (long int) (pid); \
register long int _a2 = (long int) (sig); \
register long int result; \
register long int _trash; \
asm volatile ( \
"pushl %4\n\t" \
"pushl %3\n\t" \
"pushl %2\n\t" \
"int $0x80\n\t" \
"addl $12,%%esp\n\t" \
: "=a" (result), \
"=d" (_trash) \
: "0" ((long int) SYS_##name), \
"ri" (_a1), \
"ri" (_a2) \
: "memory", "cc" ); \
result; \
})
#define INTERNAL_SYSCALL_write(name, err, nr, fd, buf, cnt) \
(void)({ \
register long int _a1 = (long int) (fd); \
register long int _a2 = (long int) (buf); \
register long int _a3 = (long int) (cnt); \
register long int result; \
register long int _trash; \
asm volatile ( \
"pushl %5\n\t" \
"pushl %4\n\t" \
"pushl %3\n\t" \
"pushl %2\n\t" \
"int $0x80\n\t" \
"addl $16,%%esp\n\t" \
: "=a" (result), \
"=d" (_trash) \
: "0" ((long int) SYS_##name), \
"ri" (_a1), \
"ri" (_a2), \
"ri" (_a3) \
/* may be even "g" constraint could be used */ \
/* but we have to worry about esp register and esp based address */ \
: "memory", "cc" ); \
result; \
})
#define INTERNAL_SYSCALL_writev(name, err, nr, fd, iov, cnt) \
(void)({ \
register long int _a1 = (long int) (fd); \
register long int _a2 = (long int) (iov); \
register long int _a3 = (long int) (cnt); \
register long int result; \
register long int _trash; \
asm volatile ( \
"pushl %5\n\t" \
"pushl %4\n\t" \
"pushl %3\n\t" \
"pushl %2\n\t" \
"int $0x80\n\t" \
"addl $16,%%esp\n\t" \
: "=a" (result), \
"=d" (_trash) \
: "0" ((long int) SYS_##name), \
"ri" (_a1), \
"ri" (_a2), \
"ri" (_a3) \
/* may be even "g" constraint could be used */ \
/* but we have to worry about esp register and esp based address */ \
: "memory", "cc" ); \
result; \
})
#endif
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