> compile NEMU

221220000 张三
Linux zzy 5.15.146.1-microsoft-standard-WSL2 #1 SMP Thu Jan 11 04:09:03 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux
 23:40:44 up 4 days, 18:46,  1 user,  load average: 2.96, 2.16, 1.08

nanos-lite/include/common.h

@@ -2,7 +2,7 @@
 #define __COMMON_H__
 
 /* Uncomment these macros to enable corresponding functionality. */
-//#define HAS_CTE
+#define HAS_CTE
 //#define HAS_VME
 //#define MULTIPROGRAM
 //#define TIME_SHARING

nanos-lite/src/irq.c

@@ -2,6 +2,7 @@
 
 static Context* do_event(Event e, Context* c) {
   switch (e.event) {
+    case EVENT_YIELD: printf("EVENT_YIELD\n"); break;
     default: panic("Unhandled event ID = %d", e.event);
   }
 

nemu/src/cpu/Kconfig

@@ -24,7 +24,7 @@ if ITRACE
 config ITRACE_COND
   depends on ITRACE
   string "Only trace instructions when the condition is true"
-  default "true"
+  default "dnpc != 0"
 endif # ITRACE
 
 menuconfig IRINGBUF
@@ -109,4 +109,9 @@ config DTRACE_READ
 
 endif # DTRACE
 
+menuconfig ETRACE
+  depends on TRACE
+  bool "Enable exception tracer"
+  default n
+
 endmenu

nemu/src/isa/riscv32/system/intr.c

@@ -21,6 +21,9 @@ word_t isa_raise_intr(word_t NO, vaddr_t epc) {
   /* TODO: Trigger an interrupt/exception with ``NO''.
    * Then return the address of the interrupt/exception vector.
    */
+#ifdef CONFIG_ETRACE
+  log_write("raise intr %d\n", NO);
+#endif
   C(MEPC) = epc;
   C(MCAUSE) = NO;
   C(MSTATUS) = 0x1800;