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/* Copyright (C) 2000 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 _LINUX_MIPS_SYSDEP_H
#define _LINUX_MIPS_SYSDEP_H 1
/* There is some commonality. */
#include <sysdeps/unix/mips/sysdep.h>
/* For Linux we can use the system call table in the header file
/usr/include/asm/unistd.h
of the kernel. But these symbols do not follow the SYS_* syntax
so we have to redefine the `SYS_ify' macro here. */
#undef SYS_ify
#ifdef __STDC__
# define SYS_ify(syscall_name) __NR_##syscall_name
#else
# define SYS_ify(syscall_name) __NR_/**/syscall_name
#endif
#ifdef __ASSEMBLER__
/* We don't want the label for the error handler to be visible in the symbol
table when we define it here. */
#ifdef __PIC__
# define SYSCALL_ERROR_LABEL 99b
#endif
#else /* ! __ASSEMBLER__ */
/* Define a macro which expands into the inline wrapper code for a system
call. */
#undef INLINE_SYSCALL
#define INLINE_SYSCALL(name, nr, args...) \
({ INTERNAL_SYSCALL_DECL(err); \
long result_var = INTERNAL_SYSCALL (name, err, nr, args); \
if ( INTERNAL_SYSCALL_ERROR_P (result_var, err) ) \
{ \
__set_errno (INTERNAL_SYSCALL_ERRNO (result_var, err)); \
result_var = -1L; \
} \
result_var; })
#undef INTERNAL_SYSCALL_DECL
#define INTERNAL_SYSCALL_DECL(err) long err
#undef INTERNAL_SYSCALL_ERROR_P
#define INTERNAL_SYSCALL_ERROR_P(val, err) ((long) (err))
#undef INTERNAL_SYSCALL_ERRNO
#define INTERNAL_SYSCALL_ERRNO(val, err) (val)
#undef INTERNAL_SYSCALL
#define INTERNAL_SYSCALL(name, err, nr, args...) internal_syscall##nr(name, err, args)
#define internal_syscall0(name, err, dummy...) \
({ \
long _sys_result; \
\
{ \
register long __v0 asm("$2"); \
register long __a3 asm("$7"); \
__asm__ volatile ( \
".set\tnoreorder\n\t" \
"li\t$2, %2\t\t\t# " #name "\n\t" \
"syscall\n\t" \
".set reorder" \
: "=r" (__v0), "=r" (__a3) \
: "i" (SYS_ify(name)) \
: __SYSCALL_CLOBBERS); \
err = __a3; \
_sys_result = __v0; \
} \
_sys_result; \
})
#define internal_syscall1(name, err, arg1) \
({ \
long _sys_result; \
\
{ \
register long __v0 asm("$2"); \
register long __a0 asm("$4") = (long) arg1; \
register long __a3 asm("$7"); \
__asm__ volatile ( \
".set\tnoreorder\n\t" \
"li\t$2, %3\t\t\t# " #name "\n\t" \
"syscall\n\t" \
".set reorder" \
: "=r" (__v0), "=r" (__a3) \
: "r" (__a0), "i" (SYS_ify(name)) \
: __SYSCALL_CLOBBERS); \
err = __a3; \
_sys_result = __v0; \
} \
_sys_result; \
})
#define internal_syscall2(name, err, arg1, arg2) \
({ \
long _sys_result; \
\
{ \
register long __v0 asm("$2"); \
register long __a0 asm("$4") = (long) arg1; \
register long __a1 asm("$5") = (long) arg2; \
register long __a3 asm("$7"); \
__asm__ volatile ( \
".set\tnoreorder\n\t" \
"li\t$2, %4\t\t\t# " #name "\n\t" \
"syscall\n\t" \
".set\treorder" \
: "=r" (__v0), "=r" (__a3) \
: "r" (__a0), "r" (__a1), "i" (SYS_ify(name)) \
: __SYSCALL_CLOBBERS); \
err = __a3; \
_sys_result = __v0; \
} \
_sys_result; \
})
#define internal_syscall3(name, err, arg1, arg2, arg3) \
({ \
long _sys_result; \
\
{ \
register long __v0 asm("$2"); \
register long __a0 asm("$4") = (long) arg1; \
register long __a1 asm("$5") = (long) arg2; \
register long __a2 asm("$6") = (long) arg3; \
register long __a3 asm("$7"); \
__asm__ volatile ( \
".set\tnoreorder\n\t" \
"li\t$2, %5\t\t\t# " #name "\n\t" \
"syscall\n\t" \
".set\treorder" \
: "=r" (__v0), "=r" (__a3) \
: "r" (__a0), "r" (__a1), "r" (__a2), "i" (SYS_ify(name)) \
: __SYSCALL_CLOBBERS); \
err = __a3; \
_sys_result = __v0; \
} \
_sys_result; \
})
#define internal_syscall4(name, err, arg1, arg2, arg3, arg4) \
({ \
long _sys_result; \
\
{ \
register long __v0 asm("$2"); \
register long __a0 asm("$4") = (long) arg1; \
register long __a1 asm("$5") = (long) arg2; \
register long __a2 asm("$6") = (long) arg3; \
register long __a3 asm("$7") = (long) arg4; \
__asm__ volatile ( \
".set\tnoreorder\n\t" \
"li\t$2, %5\t\t\t# " #name "\n\t" \
"syscall\n\t" \
".set\treorder" \
: "=r" (__v0), "+r" (__a3) \
: "r" (__a0), "r" (__a1), "r" (__a2), "i" (SYS_ify(name)) \
: __SYSCALL_CLOBBERS); \
err = __a3; \
_sys_result = __v0; \
} \
_sys_result; \
})
#define internal_syscall5(name, err, arg1, arg2, arg3, arg4, arg5) \
({ \
long _sys_result; \
\
{ \
register long __v0 asm("$2"); \
register long __a0 asm("$4") = (long) arg1; \
register long __a1 asm("$5") = (long) arg2; \
register long __a2 asm("$6") = (long) arg3; \
register long __a3 asm("$7") = (long) arg4; \
__asm__ volatile ( \
".set\tnoreorder\n\t" \
"lw\t$2, %6\n\t" \
"subu\t$29, 32\n\t" \
"sw\t$2, 16($29)\n\t" \
"li\t$2, %5\t\t\t# " #name "\n\t" \
"syscall\n\t" \
"addiu\t$29, 32\n\t" \
".set\treorder" \
: "=r" (__v0), "+r" (__a3) \
: "r" (__a0), "r" (__a1), "r" (__a2), "i" (SYS_ify(name)), \
"m" ((long)arg5) \
: __SYSCALL_CLOBBERS); \
err = __a3; \
_sys_result = __v0; \
} \
_sys_result; \
})
#define internal_syscall6(name, err, arg1, arg2, arg3, arg4, arg5, arg6)\
({ \
long _sys_result; \
\
{ \
register long __v0 asm("$2"); \
register long __a0 asm("$4") = (long) arg1; \
register long __a1 asm("$5") = (long) arg2; \
register long __a2 asm("$6") = (long) arg3; \
register long __a3 asm("$7") = (long) arg4; \
__asm__ volatile ( \
".set\tnoreorder\n\t" \
"lw\t$2, %6\n\t" \
"lw\t$8, %7\n\t" \
"subu\t$29, 32\n\t" \
"sw\t$2, 16($29)\n\t" \
"sw\t$8, 20($29)\n\t" \
"li\t$2, %5\t\t\t# " #name "\n\t" \
"syscall\n\t" \
"addiu\t$29, 32\n\t" \
".set\treorder" \
: "=r" (__v0), "+r" (__a3) \
: "r" (__a0), "r" (__a1), "r" (__a2), "i" (SYS_ify(name)), \
"m" ((long)arg5), "m" ((long)arg6) \
: __SYSCALL_CLOBBERS); \
err = __a3; \
_sys_result = __v0; \
} \
_sys_result; \
})
#define internal_syscall7(name, err, arg1, arg2, arg3, arg4, arg5, arg6, arg7)\
({ \
long _sys_result; \
\
{ \
register long __v0 asm("$2"); \
register long __a0 asm("$4") = (long) arg1; \
register long __a1 asm("$5") = (long) arg2; \
register long __a2 asm("$6") = (long) arg3; \
register long __a3 asm("$7") = (long) arg4; \
__asm__ volatile ( \
".set\tnoreorder\n\t" \
"lw\t$2, %6\n\t" \
"lw\t$8, %7\n\t" \
"lw\t$9, %8\n\t" \
"subu\t$29, 32\n\t" \
"sw\t$2, 16($29)\n\t" \
"sw\t$8, 20($29)\n\t" \
"sw\t$9, 24($29)\n\t" \
"li\t$2, %5\t\t\t# " #name "\n\t" \
"syscall\n\t" \
"addiu\t$29, 32\n\t" \
".set\treorder" \
: "=r" (__v0), "+r" (__a3) \
: "r" (__a0), "r" (__a1), "r" (__a2), "i" (SYS_ify(name)), \
"m" ((long)arg5), "m" ((long)arg6), "m" ((long)arg7) \
: __SYSCALL_CLOBBERS); \
err = __a3; \
_sys_result = __v0; \
} \
_sys_result; \
})
#define __SYSCALL_CLOBBERS "$1", "$3", "$8", "$9", "$10", "$11", "$12", "$13", "$14", "$15", "$24", "$25"
#endif /* __ASSEMBLER__ */
#endif /* linux/mips/sysdep.h */
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