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🆕 syscall模块，实现了第一个系统调用函数sys_printf

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fslongjin
2022-02-16 14:07:53 +08:00
parent 7238e3c13a
commit d3a5048f66
11 changed files with 219 additions and 8 deletions
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16
kernel/exception/trap.c
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@ -212,7 +212,21 @@ void do_general_protection(struct pt_regs * regs, unsigned long error_code)
printk("[ ");
printk_color(RED, BLACK, "ERROR");
printk(" ] do_general_protection(13),\tError Code:%#18lx,\tRSP:%#18lx,\tRIP:%#18lx\n", error_code, regs->rsp, regs->rip);
return;
if(error_code & 0x01)
printk_color(RED,BLACK,"The exception occurred during delivery of an event external to the program,such as an interrupt or an earlier exception.\n");
if(error_code & 0x02)
printk_color(RED,BLACK,"Refers to a gate descriptor in the IDT;\n");
else
printk_color(RED,BLACK,"Refers to a descriptor in the GDT or the current LDT;\n");
if((error_code & 0x02) == 0)
if(error_code & 0x04)
printk_color(RED,BLACK,"Refers to a segment or gate descriptor in the LDT;\n");
else
printk_color(RED,BLACK,"Refers to a descriptor in the current GDT;\n");
printk_color(RED,BLACK,"Segment Selector Index:%#010x\n",error_code & 0xfff8);
while (1)
;
}