O1能跑的代码

kernel/driver/interrupt/apic/apic.c

@@ -10,6 +10,8 @@
 #include <process/process.h>
 #include <sched/sched.h>
 
+#pragma GCC push_options
+#pragma GCC optimize("O0")
 // 导出定义在irq.c中的中段门表
 extern void (*interrupt_table[24])(void);
 
@@ -650,6 +652,7 @@ void apic_ioapic_edge_ack(ul irq_num) // 边沿触发
  *
  * @param irq_num
  */
+
 void apic_local_apic_edge_ack(ul irq_num)
 {
     // 向EOI寄存器写入0x00表示结束中断
@@ -660,6 +663,7 @@ void apic_local_apic_edge_ack(ul irq_num)
                              : "memory");
 }
 
+
 /**
  * @brief 读取指定类型的 Interrupt Control Structure
  *
@@ -734,4 +738,5 @@ void apic_make_rte_entry(struct apic_IO_APIC_RTE_entry *entry, uint8_t vector, u
         entry->destination.logical.logical_dest = dest_apicID;
         entry->destination.logical.reserved1 = 0;
     }
-}
+}
+#pragma GCC pop_options

kernel/driver/interrupt/apic/apic_timer.c

@@ -4,6 +4,8 @@
 #include <common/kprint.h>
 #include <sched/sched.h>
 
+// #pragma GCC push_options
+// #pragma GCC optimize("O0")
 uint64_t apic_timer_ticks_result = 0;
 
 void apic_timer_enable(uint64_t irq_num)

kernel/driver/interrupt/apic/apic_timer.h

@@ -10,6 +10,8 @@ extern uint64_t apic_timer_ticks_result;
 
 #define APIC_TIMER_IRQ_NUM 151
 
+#pragma GCC push_options
+#pragma GCC optimize("O0")
 /**
  * @brief 设置apic定时器的分频计数
  *
@@ -78,4 +80,6 @@ extern uint64_t apic_timer_ticks_result;
  * @brief 初始化local APIC定时器
  *
  */
-void apic_timer_init();
+void apic_timer_init();
+
+#pragma GCC optimize("O0")

kernel/driver/timers/HPET/HPET.c

@@ -122,7 +122,7 @@ void HPET_measure_freq()
 
     // 使用I/O APIC 的IRQ2接收hpet定时器0的中断
     apic_make_rte_entry(&entry, 34, IO_APIC_FIXED, DEST_PHYSICAL, IDLE, POLARITY_HIGH, IRR_RESET, EDGE_TRIGGER, MASKED, 0);
-
+    
     // 计算HPET0间隔多少个时钟周期触发一次中断
     uint64_t clks_to_intr = 0.001 * interval * HPET_freq;
     // kdebug("clks_to_intr=%#ld", clks_to_intr);
@@ -158,9 +158,9 @@ void HPET_measure_freq()
     // 顺便测定tsc频率
     test_tsc_start = rdtsc();
     io_mfence();
-
     while (measure_apic_timer_flag == false)
         ;
+    kdebug("wait done");
 
     irq_unregister(34);
 

kernel/driver/usb/xhci/xhci.c

@@ -9,6 +9,9 @@
 #include <exception/irq.h>
 #include <driver/interrupt/apic/apic.h>
 
+#pragma GCC push_options
+#pragma GCC optimize("O0")
+
 spinlock_t xhci_controller_init_lock = {0}; // xhci控制器初始化锁(在usb_init中被初始化)
 
 static int xhci_ctrl_count = 0; // xhci控制器计数
@@ -921,4 +924,5 @@ failed:;
 failed_exceed_max:;
     kerror("Failed to initialize controller: bus=%d, dev=%d, func=%d", dev_hdr->header.bus, dev_hdr->header.device, dev_hdr->header.func);
     spin_unlock(&xhci_controller_init_lock);
-}
+}
+#pragma GCC optimize("O0")

kernel/driver/usb/xhci/xhci.h

@@ -2,7 +2,7 @@
 #include <driver/usb/usb.h>
 #include <driver/pci/pci.h>
 #include <driver/pci/msi.h>
-
+// #pragma GCC optimize("O0")
 #define XHCI_MAX_HOST_CONTROLLERS 4 // 本驱动程序最大支持4个xhci root hub controller
 #define XHCI_MAX_ROOT_HUB_PORTS 128 // 本驱动程序最大支持127个root hub 端口（第0个保留）