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Code Issues Releases Wiki Activity

🆕 printk新增翻页滚动功能（bug:用户态触发中断时翻页会出现#UD）

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This commit is contained in:
fslongjin
2022-02-22 20:45:32 +08:00
parent 12cc6a8375
commit 3961c0e1be
6 changed files with 162 additions and 51 deletions
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15
kernel/process/process.c
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@ -30,7 +30,6 @@ void __switch_to(struct process_control_block *prev, struct process_control_bloc
__asm__ __volatile__("movq %0, %%gs \n\t" ::"a"(next->thread->gs));
}
/**
* @brief 这是一个用户态的程序
*
@ -39,13 +38,13 @@ void user_level_function()
{
kinfo("Program (user_level_function) is runing...");
kinfo("Try to enter syscall id 15...");
enter_syscall(15,0,0,0,0,0,0,0,0);
enter_syscall(15, 0, 0, 0, 0, 0, 0, 0, 0);
enter_syscall(SYS_PRINTF, (ul) "test_sys_printf\n", 0, 0, 0, 0, 0, 0, 0);
enter_syscall(SYS_PRINTF, (ul)"test_sys_printf\n", 0,0,0,0,0,0,0);
kinfo("Return from syscall id 15...");
while(1);
while (1)
;
}
/**
* @brief 使当前进程去执行新的代码
@ -78,7 +77,7 @@ ul do_execve(struct pt_regs *regs)
ul initial_kernel_thread(ul arg)
{
kinfo("initial proc running...\targ:%#018lx", arg);
struct pt_regs *regs;
current_pcb->thread->rip = (ul)ret_from_system_call;
@ -201,8 +200,6 @@ void process_init()
initial_mm.stack_start = _stack_start;
// 初始化进程和tss
set_TSS64(initial_thread.rbp, initial_tss[0].rsp1, initial_tss[0].rsp2, initial_tss[0].ist1, initial_tss[0].ist2, initial_tss[0].ist3, initial_tss[0].ist4, initial_tss[0].ist5, initial_tss[0].ist6, initial_tss[0].ist7);
@ -265,7 +262,7 @@ unsigned long do_fork(struct pt_regs *regs, unsigned long clone_flags, unsigned
thd->rip = regs->rip;
thd->rsp = (ul)tsk + STACK_SIZE - sizeof(struct pt_regs);
thd->fs = KERNEL_DS;
thd->gs = KERNEL_DS;
thd->gs = KERNEL_DS;
// 若进程不是内核层的进程，则跳转到ret from system call
if (!(tsk->flags & PF_KTHREAD))