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63 lines
1.6 KiB
63 lines
1.6 KiB
3 months ago
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/*
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* Copyright (c) 2006-2021, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2021-02-03 lizhirui first version
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* 2022-11-10 WangXiaoyao Add readable syscall tracing
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*/
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#include <rthw.h>
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#include <rtthread.h>
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#ifdef RT_USING_SMART
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#define DBG_TAG "syscall"
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#define DBG_LVL DBG_WARNING
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#include <rtdbg.h>
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#include <stdint.h>
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#include <mmu.h>
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#include <page.h>
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#include <lwp_user_mm.h>
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#include "riscv_mmu.h"
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#include "stack.h"
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typedef rt_size_t (*syscallfunc_t)(rt_size_t, rt_size_t, rt_size_t, rt_size_t, rt_size_t, rt_size_t, rt_size_t);
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void syscall_handler(struct rt_hw_stack_frame *regs)
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{
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const char *syscall_name;
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int syscallid = regs->a7;
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if (syscallid == 0)
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{
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LOG_E("syscall id = 0!\n");
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while (1)
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;
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}
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syscallfunc_t syscallfunc = (syscallfunc_t)lwp_get_sys_api(syscallid);
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if (syscallfunc == RT_NULL)
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{
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LOG_E("unsupported syscall!\n");
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sys_exit_group(-1);
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}
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#if DBG_LVL >= DBG_INFO
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syscall_name = lwp_get_syscall_name(syscallid);
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#endif
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LOG_I("[0x%lx] %s(0x%lx, 0x%lx, 0x%lx, 0x%lx, 0x%lx, 0x%lx, 0x%lx)", rt_thread_self(), syscall_name,
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regs->a0, regs->a1, regs->a2, regs->a3, regs->a4, regs->a5, regs->a6);
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regs->a0 = syscallfunc(regs->a0, regs->a1, regs->a2, regs->a3, regs->a4, regs->a5, regs->a6);
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regs->a7 = 0;
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regs->epc += 4; // skip ecall instruction
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LOG_I("[0x%lx] %s ret: 0x%lx", rt_thread_self(), syscall_name, regs->a0);
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}
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#endif /* RT_USING_SMART */
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