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63 lines
2.5 KiB
C
63 lines
2.5 KiB
C
3 years ago
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/* SPDX-License-Identifier: BSD-3-Clause */
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/* See the end of this file for copyright, licensing, and warranty information. */
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#include <arch/entry.h>
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#include <arch/hardware.h>
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#include <ardix/syscall.h>
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#include <ardix/types.h>
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#include <errno.h>
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#include <stddef.h>
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void arch_syscall(void *sp)
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{
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struct reg_snapshot *regs = sp;
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enum syscall sc_num = arch_syscall_num(regs);
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int (*handler)(sysarg_t arg1, sysarg_t arg2, sysarg_t arg3,
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sysarg_t arg4, sysarg_t arg5, sysarg_t arg6);
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int sc_ret;
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if (sc_num > NSYSCALLS) {
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arch_syscall_set_rval(regs, -EINVAL);
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return;
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}
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handler = syscall_table[sc_num];
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if (handler == NULL) {
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arch_syscall_set_rval(regs, -EINVAL);
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return;
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}
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/* TODO: not every syscall uses the max amount of parameters (duh) */
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sc_ret = handler(arch_syscall_arg1(regs), arch_syscall_arg2(regs), arch_syscall_arg3(regs),
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arch_syscall_arg4(regs), arch_syscall_arg5(regs), arch_syscall_arg6(regs));
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arch_syscall_set_rval(regs, sc_ret);
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}
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/*
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* Copyright (c) 2020 Felix Kopp <sandtler@sandtler.club>
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*
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* Redistribution and use in source and binary forms, with or without modification, are permitted
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* provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this list of
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* conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice, this list of
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* conditions and the following disclaimer in the documentation and/or other materials
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* provided with the distribution.
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* 3. Neither the name of the copyright holder nor the names of its contributors may be
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* used to endorse or promote products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
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* WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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