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Code Issues Releases Wiki Activity

修复处理器异常陷阱门被错误清空的bug

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This commit is contained in:
longjin 2022-10-16 20:54:02 +08:00
parent 4830d04c2f
commit d364ed7d79
2 changed files with 67 additions and 42 deletions
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17
kernel/exception/irq.c
View File

@ -13,7 +13,6 @@
#include <common/printk.h> #include <common/printk.h>
#include <common/string.h> #include <common/string.h>
#include <mm/slab.h> #include <mm/slab.h>
extern void ignore_int();
#pragma GCC push_options #pragma GCC push_options
#pragma GCC optimize("O0") #pragma GCC optimize("O0")
@ -213,10 +212,7 @@ int irq_unregister(ul irq_num)
*/ */
void irq_init() void irq_init()
{ {
// 将idt重置为新的ignore_int入点（此前在head.S中有设置，
// 但是那个不完整，某些版本的编译器的输出，在真机运行时会破坏进程执行环境，从而导致#GP
for (int i = 0; i < 256; ++i)
set_intr_gate(i, 0, ignore_int);
#if _INTR_8259A_ #if _INTR_8259A_
init_8259A(); init_8259A();
#else #else
@ -227,14 +223,3 @@ void irq_init()
#endif #endif
} }
#pragma GCC optimize("O0") #pragma GCC optimize("O0")
/**
* @brief 当系统收到未知的中断时，执行此处理函数
*
* @param regs
* @param error_code
*/
void ignore_int_handler(struct pt_regs *regs, unsigned long error_code)
{
kwarn("Unknown interrupt or fault at RIP.\n");
}

92
kernel/exception/trap.c
View File

@ -1,15 +1,19 @@
#include "trap.h" #include "trap.h"
#include "gate.h" #include "gate.h"
#include <process/ptrace.h>
#include <common/kprint.h> #include <common/kprint.h>
#include <process/process.h>
#include <debug/traceback/traceback.h> #include <debug/traceback/traceback.h>
#include <process/process.h>
#include <process/ptrace.h>
#include <sched/sched.h> #include <sched/sched.h>
extern void ignore_int();
// 0 #DE 除法错误 // 0 #DE 除法错误
void do_divide_error(struct pt_regs *regs, unsigned long error_code) void do_divide_error(struct pt_regs *regs, unsigned long error_code)
{ {
// kerror("do_divide_error(0)"); // kerror("do_divide_error(0)");
kerror("do_divide_error(0),\tError Code:%#18lx,\tRSP:%#18lx,\tRIP:%#18lx\t CPU:%d\t pid=%d\n", error_code, regs->rsp, regs->rip, proc_current_cpu_id, current_pcb->pid); kerror("do_divide_error(0),\tError Code:%#18lx,\tRSP:%#18lx,\tRIP:%#18lx\t CPU:%d\t pid=%d\n", error_code,
regs->rsp, regs->rip, proc_current_cpu_id, current_pcb->pid);
traceback(regs); traceback(regs);
current_pcb->state = PROC_STOPPED; current_pcb->state = PROC_STOPPED;
sched(); sched();
@ -20,7 +24,8 @@ void do_debug(struct pt_regs *regs, unsigned long error_code)
{ {
printk("[ "); printk("[ ");
printk_color(RED, BLACK, "ERROR / TRAP"); printk_color(RED, BLACK, "ERROR / TRAP");
printk(" ] do_debug(1),\tError Code:%#18lx,\tRSP:%#18lx,\tRIP:%#18lx\t CPU:%d\n", error_code, regs->rsp, regs->rip, proc_current_cpu_id); printk(" ] do_debug(1),\tError Code:%#18lx,\tRSP:%#18lx,\tRIP:%#18lx\t CPU:%d\n", error_code, regs->rsp, regs->rip,
proc_current_cpu_id);
while (1) while (1)
hlt(); hlt();
@ -32,7 +37,8 @@ void do_nmi(struct pt_regs *regs, unsigned long error_code)
printk("[ "); printk("[ ");
printk_color(BLUE, BLACK, "INT"); printk_color(BLUE, BLACK, "INT");
printk(" ] do_nmi(2),\tError Code:%#18lx,\tRSP:%#18lx,\tRIP:%#18lx\t CPU:%d\n", error_code, regs->rsp, regs->rip, proc_current_cpu_id); printk(" ] do_nmi(2),\tError Code:%#18lx,\tRSP:%#18lx,\tRIP:%#18lx\t CPU:%d\n", error_code, regs->rsp, regs->rip,
proc_current_cpu_id);
while (1) while (1)
hlt(); hlt();
@ -44,7 +50,8 @@ void do_int3(struct pt_regs *regs, unsigned long error_code)
printk("[ "); printk("[ ");
printk_color(YELLOW, BLACK, "TRAP"); printk_color(YELLOW, BLACK, "TRAP");
printk(" ] do_int3(3),\tError Code:%#18lx,\tRSP:%#18lx,\tRIP:%#18lx\t CPU:%d\n", error_code, regs->rsp, regs->rip, proc_current_cpu_id); printk(" ] do_int3(3),\tError Code:%#18lx,\tRSP:%#18lx,\tRIP:%#18lx\t CPU:%d\n", error_code, regs->rsp, regs->rip,
proc_current_cpu_id);
while (1) while (1)
hlt(); hlt();
@ -56,7 +63,8 @@ void do_overflow(struct pt_regs *regs, unsigned long error_code)
printk("[ "); printk("[ ");
printk_color(YELLOW, BLACK, "TRAP"); printk_color(YELLOW, BLACK, "TRAP");
printk(" ] do_overflow(4),\tError Code:%#18lx,\tRSP:%#18lx,\tRIP:%#18lx\t CPU:%d\n", error_code, regs->rsp, regs->rip, proc_current_cpu_id); printk(" ] do_overflow(4),\tError Code:%#18lx,\tRSP:%#18lx,\tRIP:%#18lx\t CPU:%d\n", error_code, regs->rsp,
regs->rip, proc_current_cpu_id);
current_pcb->state = PROC_STOPPED; current_pcb->state = PROC_STOPPED;
sched(); sched();
@ -66,7 +74,8 @@ void do_overflow(struct pt_regs *regs, unsigned long error_code)
void do_bounds(struct pt_regs *regs, unsigned long error_code) void do_bounds(struct pt_regs *regs, unsigned long error_code)
{ {
kerror("do_bounds(5),\tError Code:%#18lx,\tRSP:%#18lx,\tRIP:%#18lx\t CPU:%d\n", error_code, regs->rsp, regs->rip, proc_current_cpu_id); kerror("do_bounds(5),\tError Code:%#18lx,\tRSP:%#18lx,\tRIP:%#18lx\t CPU:%d\n", error_code, regs->rsp, regs->rip,
proc_current_cpu_id);
while (1) while (1)
hlt(); hlt();
@ -76,7 +85,8 @@ void do_bounds(struct pt_regs *regs, unsigned long error_code)
void do_undefined_opcode(struct pt_regs *regs, unsigned long error_code) void do_undefined_opcode(struct pt_regs *regs, unsigned long error_code)
{ {
kerror("do_undefined_opcode(6),\tError Code:%#18lx,\tRSP:%#18lx,\tRIP:%#18lx\t CPU:%d, pid:%ld", error_code, regs->rsp, regs->rip, proc_current_cpu_id, current_pcb->pid); kerror("do_undefined_opcode(6),\tError Code:%#18lx,\tRSP:%#18lx,\tRIP:%#18lx\t CPU:%d, pid:%ld", error_code,
regs->rsp, regs->rip, proc_current_cpu_id, current_pcb->pid);
traceback(regs); traceback(regs);
current_pcb->state = PROC_STOPPED; current_pcb->state = PROC_STOPPED;
sched(); sched();
@ -86,7 +96,8 @@ void do_undefined_opcode(struct pt_regs *regs, unsigned long error_code)
void do_dev_not_avaliable(struct pt_regs *regs, unsigned long error_code) void do_dev_not_avaliable(struct pt_regs *regs, unsigned long error_code)
{ {
kerror("do_dev_not_avaliable(7),\tError Code:%#18lx,\tRSP:%#18lx,\tRIP:%#18lx\t CPU:%d\n", error_code, regs->rsp, regs->rip, proc_current_cpu_id); kerror("do_dev_not_avaliable(7),\tError Code:%#18lx,\tRSP:%#18lx,\tRIP:%#18lx\t CPU:%d\n", error_code, regs->rsp,
regs->rip, proc_current_cpu_id);
current_pcb->state = PROC_STOPPED; current_pcb->state = PROC_STOPPED;
sched(); sched();
@ -98,7 +109,8 @@ void do_double_fault(struct pt_regs *regs, unsigned long error_code)
printk("[ "); printk("[ ");
printk_color(RED, BLACK, "Terminate"); printk_color(RED, BLACK, "Terminate");
printk(" ] do_double_fault(8),\tError Code:%#18lx,\tRSP:%#18lx,\tRIP:%#18lx\t CPU:%d\n", error_code, regs->rsp, regs->rip, proc_current_cpu_id); printk(" ] do_double_fault(8),\tError Code:%#18lx,\tRSP:%#18lx,\tRIP:%#18lx\t CPU:%d\n", error_code, regs->rsp,
regs->rip, proc_current_cpu_id);
traceback(regs); traceback(regs);
current_pcb->state = PROC_STOPPED; current_pcb->state = PROC_STOPPED;
sched(); sched();
@ -108,7 +120,8 @@ void do_double_fault(struct pt_regs *regs, unsigned long error_code)
void do_coprocessor_segment_overrun(struct pt_regs *regs, unsigned long error_code) void do_coprocessor_segment_overrun(struct pt_regs *regs, unsigned long error_code)
{ {
kerror("do_coprocessor_segment_overrun(9),\tError Code:%#18lx,\tRSP:%#18lx,\tRIP:%#18lx\t CPU:%d\n", error_code, regs->rsp, regs->rip, proc_current_cpu_id); kerror("do_coprocessor_segment_overrun(9),\tError Code:%#18lx,\tRSP:%#18lx,\tRIP:%#18lx\t CPU:%d\n", error_code,
regs->rsp, regs->rip, proc_current_cpu_id);
current_pcb->state = PROC_STOPPED; current_pcb->state = PROC_STOPPED;
sched(); sched();
@ -120,7 +133,8 @@ void do_invalid_TSS(struct pt_regs *regs, unsigned long error_code)
printk("["); printk("[");
printk_color(RED, BLACK, "ERROR"); printk_color(RED, BLACK, "ERROR");
printk("] do_invalid_TSS(10),\tError Code:%#18lx,\tRSP:%#18lx,\tRIP:%#18lx\t CPU:%d\n", error_code, regs->rsp, regs->rip, proc_current_cpu_id); printk("] do_invalid_TSS(10),\tError Code:%#18lx,\tRSP:%#18lx,\tRIP:%#18lx\t CPU:%d\n", error_code, regs->rsp,
regs->rip, proc_current_cpu_id);
printk_color(YELLOW, BLACK, "Information:\n"); printk_color(YELLOW, BLACK, "Information:\n");
// 解析错误码 // 解析错误码
@ -149,7 +163,8 @@ void do_invalid_TSS(struct pt_regs *regs, unsigned long error_code)
void do_segment_not_exists(struct pt_regs *regs, unsigned long error_code) void do_segment_not_exists(struct pt_regs *regs, unsigned long error_code)
{ {
kerror("do_segment_not_exists(11),\tError Code:%#18lx,\tRSP:%#18lx,\tRIP:%#18lx\t CPU:%d\n", error_code, regs->rsp, regs->rip, proc_current_cpu_id); kerror("do_segment_not_exists(11),\tError Code:%#18lx,\tRSP:%#18lx,\tRIP:%#18lx\t CPU:%d\n", error_code, regs->rsp,
regs->rip, proc_current_cpu_id);
current_pcb->state = PROC_STOPPED; current_pcb->state = PROC_STOPPED;
sched(); sched();
@ -159,7 +174,8 @@ void do_segment_not_exists(struct pt_regs *regs, unsigned long error_code)
void do_stack_segment_fault(struct pt_regs *regs, unsigned long error_code) void do_stack_segment_fault(struct pt_regs *regs, unsigned long error_code)
{ {
kerror("do_stack_segment_fault(12),\tError Code:%#18lx,\tRSP:%#18lx,\tRIP:%#18lx\t CPU:%d\n", error_code, regs->rsp, regs->rip, proc_current_cpu_id); kerror("do_stack_segment_fault(12),\tError Code:%#18lx,\tRSP:%#18lx,\tRIP:%#18lx\t CPU:%d\n", error_code, regs->rsp,
regs->rip, proc_current_cpu_id);
traceback(regs); traceback(regs);
current_pcb->state = PROC_STOPPED; current_pcb->state = PROC_STOPPED;
sched(); sched();
@ -169,9 +185,12 @@ void do_stack_segment_fault(struct pt_regs *regs, unsigned long error_code)
void do_general_protection(struct pt_regs *regs, unsigned long error_code) void do_general_protection(struct pt_regs *regs, unsigned long error_code)
{ {
kerror("do_general_protection(13),\tError Code:%#18lx,\tRSP:%#18lx,\tRIP:%#18lx\t CPU:%d\tpid=%ld\n", error_code, regs->rsp, regs->rip, proc_current_cpu_id, current_pcb->pid); kerror("do_general_protection(13),\tError Code:%#18lx,\tRSP:%#18lx,\tRIP:%#18lx\t CPU:%d\tpid=%ld\n", error_code,
regs->rsp, regs->rip, proc_current_cpu_id, current_pcb->pid);
if (error_code & 0x01) 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"); 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) if (error_code & 0x02)
printk_color(RED, BLACK, "Refers to a gate descriptor in the IDT;\n"); printk_color(RED, BLACK, "Refers to a gate descriptor in the IDT;\n");
@ -196,10 +215,10 @@ void do_page_fault(struct pt_regs *regs, unsigned long error_code)
unsigned long cr2 = 0; unsigned long cr2 = 0;
__asm__ __volatile__("movq %%cr2, %0" __asm__ __volatile__("movq %%cr2, %0" : "=r"(cr2)::"memory");
: "=r"(cr2)::"memory");
kerror("do_page_fault(14),Error code :%#018lx,RSP:%#018lx, RBP=%#018lx, RIP:%#018lx CPU:%d, pid=%d\n", error_code, regs->rsp, regs->rbp, regs->rip, proc_current_cpu_id, current_pcb->pid); kerror("do_page_fault(14),Error code :%#018lx,RSP:%#018lx, RBP=%#018lx, RIP:%#018lx CPU:%d, pid=%d\n", error_code,
regs->rsp, regs->rbp, regs->rip, proc_current_cpu_id, current_pcb->pid);
kerror("regs->rax = %#018lx\n", regs->rax); kerror("regs->rax = %#018lx\n", regs->rax);
if (!(error_code & 0x01)) if (!(error_code & 0x01))
printk_color(RED, BLACK, "Page Not-Present,\t"); printk_color(RED, BLACK, "Page Not-Present,\t");
@ -223,7 +242,7 @@ void do_page_fault(struct pt_regs *regs, unsigned long error_code)
printk_color(RED, BLACK, "\n"); printk_color(RED, BLACK, "\n");
printk_color(RED, BLACK, "CR2:%#018lx\n", cr2); printk_color(RED, BLACK, "CR2:%#018lx\n", cr2);
traceback(regs); traceback(regs);
current_pcb->state = PROC_STOPPED; current_pcb->state = PROC_STOPPED;
sched(); sched();
@ -235,7 +254,8 @@ void do_page_fault(struct pt_regs *regs, unsigned long error_code)
void do_x87_FPU_error(struct pt_regs *regs, unsigned long error_code) void do_x87_FPU_error(struct pt_regs *regs, unsigned long error_code)
{ {
kerror("do_x87_FPU_error(16),\tError Code:%#18lx,\tRSP:%#18lx,\tRIP:%#18lx\t CPU:%d\n", error_code, regs->rsp, regs->rip, proc_current_cpu_id); kerror("do_x87_FPU_error(16),\tError Code:%#18lx,\tRSP:%#18lx,\tRIP:%#18lx\t CPU:%d\n", error_code, regs->rsp,
regs->rip, proc_current_cpu_id);
while (1) while (1)
hlt(); hlt();
@ -245,7 +265,8 @@ void do_x87_FPU_error(struct pt_regs *regs, unsigned long error_code)
void do_alignment_check(struct pt_regs *regs, unsigned long error_code) void do_alignment_check(struct pt_regs *regs, unsigned long error_code)
{ {
kerror("do_alignment_check(17),\tError Code:%#18lx,\tRSP:%#18lx,\tRIP:%#18lx\t CPU:%d\n", error_code, regs->rsp, regs->rip, proc_current_cpu_id); kerror("do_alignment_check(17),\tError Code:%#18lx,\tRSP:%#18lx,\tRIP:%#18lx\t CPU:%d\n", error_code, regs->rsp,
regs->rip, proc_current_cpu_id);
current_pcb->state = PROC_STOPPED; current_pcb->state = PROC_STOPPED;
sched(); sched();
@ -255,7 +276,8 @@ void do_alignment_check(struct pt_regs *regs, unsigned long error_code)
void do_machine_check(struct pt_regs *regs, unsigned long error_code) void do_machine_check(struct pt_regs *regs, unsigned long error_code)
{ {
kerror("do_machine_check(18),\tError Code:%#18lx,\tRSP:%#18lx,\tRIP:%#18lx\t CPU:%d\n", error_code, regs->rsp, regs->rip, proc_current_cpu_id); kerror("do_machine_check(18),\tError Code:%#18lx,\tRSP:%#18lx,\tRIP:%#18lx\t CPU:%d\n", error_code, regs->rsp,
regs->rip, proc_current_cpu_id);
current_pcb->state = PROC_STOPPED; current_pcb->state = PROC_STOPPED;
sched(); sched();
@ -265,7 +287,8 @@ void do_machine_check(struct pt_regs *regs, unsigned long error_code)
void do_SIMD_exception(struct pt_regs *regs, unsigned long error_code) void do_SIMD_exception(struct pt_regs *regs, unsigned long error_code)
{ {
kerror("do_SIMD_exception(19),\tError Code:%#18lx,\tRSP:%#18lx,\tRIP:%#18lx\t CPU:%d\n", error_code, regs->rsp, regs->rip, proc_current_cpu_id); kerror("do_SIMD_exception(19),\tError Code:%#18lx,\tRSP:%#18lx,\tRIP:%#18lx\t CPU:%d\n", error_code, regs->rsp,
regs->rip, proc_current_cpu_id);
current_pcb->state = PROC_STOPPED; current_pcb->state = PROC_STOPPED;
sched(); sched();
@ -275,7 +298,8 @@ void do_SIMD_exception(struct pt_regs *regs, unsigned long error_code)
void do_virtualization_exception(struct pt_regs *regs, unsigned long error_code) void do_virtualization_exception(struct pt_regs *regs, unsigned long error_code)
{ {
kerror("do_virtualization_exception(20),\tError Code:%#18lx,\tRSP:%#18lx,\tRIP:%#18lx\t CPU:%d\n", error_code, regs->rsp, regs->rip, proc_current_cpu_id); kerror("do_virtualization_exception(20),\tError Code:%#18lx,\tRSP:%#18lx,\tRIP:%#18lx\t CPU:%d\n", error_code,
regs->rsp, regs->rip, proc_current_cpu_id);
current_pcb->state = PROC_STOPPED; current_pcb->state = PROC_STOPPED;
sched(); sched();
@ -283,8 +307,24 @@ void do_virtualization_exception(struct pt_regs *regs, unsigned long error_code)
// 21-21 Intel保留，请勿使用 // 21-21 Intel保留，请勿使用
/**
* @brief 当系统收到未知的中断时，执行此处理函数
*
* @param regs
* @param error_code
*/
void ignore_int_handler(struct pt_regs *regs, unsigned long error_code)
{
kwarn("Unknown interrupt or fault at RIP.\n");
}
void sys_vector_init() void sys_vector_init()
{ {
// 将idt重置为新的ignore_int入点（此前在head.S中有设置，
// 但是那个不完整，某些版本的编译器的输出，在真机运行时会破坏进程执行环境，从而导致#GP
for (int i = 0; i < 256; ++i)
set_intr_gate(i, 0, ignore_int);
set_trap_gate(0, 0, divide_error); set_trap_gate(0, 0, divide_error);
set_trap_gate(1, 0, debug); set_trap_gate(1, 0, debug);
set_intr_gate(2, 0, nmi); set_intr_gate(2, 0, nmi);