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🎨 将shell独立成单独的app

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fslongjin
2022-05-24 14:36:24 +08:00
parent 1eb9a299b6
commit afeca18206
8 changed files with 41 additions and 18 deletions
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6
kernel/process/process.c
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@ -573,13 +573,13 @@ ul initial_kernel_thread(ul arg)
// kdebug("current_pcb->thread->rsp=%#018lx", current_pcb->thread->rsp);
current_pcb->flags = 0;
// 将返回用户层的代码压入堆栈，向rdx传入regs的地址，然后jmp到do_execve这个系统调用api的处理函数 这里的设计思路和switch_proc类似
// 加载用户态程序：init.bin
char init_path[] = "/init.bin";
// 加载用户态程序：shell.elf
char init_path[] = "/shell.elf";
uint64_t addr = (uint64_t)&init_path;
__asm__ __volatile__("movq %1, %%rsp \n\t"
"pushq %2 \n\t"
"jmp do_execve \n\t" ::"D"(current_pcb->thread->rsp),
"m"(current_pcb->thread->rsp), "m"(current_pcb->thread->rip), "S"("/init.bin")
"m"(current_pcb->thread->rsp), "m"(current_pcb->thread->rip), "S"("/shell.elf")
: "memory");
return 1;