/*
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* Copyright (C) 2001,2002,2003,2004 Philippe Gerum <rpm@xenomai.org>.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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*/
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#ifndef _LIB_COBALT_POWERPC_SYSCALL_H
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#define _LIB_COBALT_POWERPC_SYSCALL_H
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#include <cobalt/uapi/syscall.h>
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/* Some code pulled from glibc's inline syscalls. */
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#define LOADARGS_0(syscode, dummy...) \
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__sc_0 = (unsigned long)(syscode)
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#define LOADARGS_1(syscode, arg1) \
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LOADARGS_0(syscode); \
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__sc_3 = (unsigned long) (arg1)
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#define LOADARGS_2(syscode, arg1, arg2) \
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LOADARGS_1(syscode, arg1); \
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__sc_4 = (unsigned long) (arg2)
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#define LOADARGS_3(syscode, arg1, arg2, arg3) \
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LOADARGS_2(syscode, arg1, arg2); \
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__sc_5 = (unsigned long) (arg3)
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#define LOADARGS_4(syscode, arg1, arg2, arg3, arg4) \
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LOADARGS_3(syscode, arg1, arg2, arg3); \
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__sc_6 = (unsigned long) (arg4)
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#define LOADARGS_5(syscode, arg1, arg2, arg3, arg4, arg5) \
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LOADARGS_4(syscode, arg1, arg2, arg3, arg4); \
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__sc_7 = (unsigned long) (arg5)
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#define ASM_INPUT_0 "0" (__sc_0)
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#define ASM_INPUT_1 ASM_INPUT_0, "1" (__sc_3)
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#define ASM_INPUT_2 ASM_INPUT_1, "2" (__sc_4)
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#define ASM_INPUT_3 ASM_INPUT_2, "3" (__sc_5)
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#define ASM_INPUT_4 ASM_INPUT_3, "4" (__sc_6)
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#define ASM_INPUT_5 ASM_INPUT_4, "5" (__sc_7)
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#define XENOMAI_DO_SYSCALL(nr, op, args...) \
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({ \
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register unsigned long __sc_0 __asm__ ("r0"); \
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register unsigned long __sc_3 __asm__ ("r3"); \
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register unsigned long __sc_4 __asm__ ("r4"); \
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register unsigned long __sc_5 __asm__ ("r5"); \
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register unsigned long __sc_6 __asm__ ("r6"); \
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register unsigned long __sc_7 __asm__ ("r7"); \
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\
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LOADARGS_##nr(__xn_syscode(op), args); \
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__asm__ __volatile__ \
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("sc \n\t" \
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"mfcr %0 " \
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: "=&r" (__sc_0), \
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"=&r" (__sc_3), "=&r" (__sc_4), \
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"=&r" (__sc_5), "=&r" (__sc_6), \
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"=&r" (__sc_7) \
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: ASM_INPUT_##nr \
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: "cr0", "ctr", "memory", \
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"r8", "r9", "r10","r11", "r12"); \
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(int)((__sc_0 & (1 << 28)) ? -__sc_3 : __sc_3); \
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})
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#define XENOMAI_SYSCALL0(op) XENOMAI_DO_SYSCALL(0,op)
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#define XENOMAI_SYSCALL1(op,a1) XENOMAI_DO_SYSCALL(1,op,a1)
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#define XENOMAI_SYSCALL2(op,a1,a2) XENOMAI_DO_SYSCALL(2,op,a1,a2)
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#define XENOMAI_SYSCALL3(op,a1,a2,a3) XENOMAI_DO_SYSCALL(3,op,a1,a2,a3)
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#define XENOMAI_SYSCALL4(op,a1,a2,a3,a4) XENOMAI_DO_SYSCALL(4,op,a1,a2,a3,a4)
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#define XENOMAI_SYSCALL5(op,a1,a2,a3,a4,a5) XENOMAI_DO_SYSCALL(5,op,a1,a2,a3,a4,a5)
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#define XENOMAI_SYSBIND(breq) XENOMAI_DO_SYSCALL(1,sc_cobalt_bind,breq)
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#endif /* !_LIB_COBALT_POWERPC_SYSCALL_H */
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