/* * Copyright (c) 2005 Martin Decky * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * - Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * - Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * - The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ /** @addtogroup libcmips32 * @{ */ /** @file * @ingroup libcmips32 */ #include <libc.h> sysarg_t __syscall(const sysarg_t p1, const sysarg_t p2, const sysarg_t p3, const sysarg_t p4, const sysarg_t p5, const sysarg_t p6, const syscall_t id) { register sysarg_t __mips_reg_a0 asm("$4") = p1; register sysarg_t __mips_reg_a1 asm("$5") = p2; register sysarg_t __mips_reg_a2 asm("$6") = p3; register sysarg_t __mips_reg_a3 asm("$7") = p4; register sysarg_t __mips_reg_t0 asm("$8") = p5; register sysarg_t __mips_reg_t1 asm("$9") = p6; register sysarg_t __mips_reg_v0 asm("$2") = id; asm volatile ( "syscall\n" : "=r" (__mips_reg_v0) : "r" (__mips_reg_a0), "r" (__mips_reg_a1), "r" (__mips_reg_a2), "r" (__mips_reg_a3), "r" (__mips_reg_t0), "r" (__mips_reg_t1), "r" (__mips_reg_v0) : /* * We are a function call, although C * does not know it. */ "%ra", /* * Clobber memory too as some arguments might be * actually pointers. */ "memory" ); return __mips_reg_v0; } /** @} */