[pk,sim] added temporary "exit" functionality

3 files changed, 7 insertions, 3 deletions

diff --git a/file.c b/file.c
index 4e70e3a..b52ec47 100644
--- a/file.c
+++ b/file.c
@@ -93,7 +93,6 @@ static void putch(int c)
 
 sysret_t file_write(file_t* f, const void* buf, size_t size)
 {
-  kassert(f == stdout);
   for(int i = 0; i < size; i++)
     putch(((char*)buf)[i]);
   return (sysret_t){0,0};
@@ -101,7 +100,6 @@ sysret_t file_write(file_t* f, const void* buf, size_t size)
 
 sysret_t file_stat(file_t* f, struct stat* s)
 {
-  kassert(f == stdout);
   s->st_mode = S_IFCHR;
   return (sysret_t){0,0};
 }
diff --git a/pk.c b/pk.c
index 6558d87..2bee836 100644
--- a/pk.c
+++ b/pk.c
@@ -145,3 +145,8 @@ void boot()
   tf.epc = 0x1000;
   pop_tf(&tf);
 }
+
+void gtfo()
+{
+  asm("mtc0 $0,$9");
+}
diff --git a/pk.h b/pk.h
index 8fb1945..8310c7a 100644
--- a/pk.h
+++ b/pk.h
@@ -9,7 +9,7 @@ typedef struct
   long badvaddr;
 } trapframe_t;
 
-#define panic(s,...) do { printk(s"\n", ##__VA_ARGS__); while(1); } while(0)
+#define panic(s,...) do { printk(s"\n", ##__VA_ARGS__); gtfo(); } while(0)
 #define kassert(cond) do { if(!(cond)) panic("assertion failed: "#cond); } while(0)
 
 #ifdef __cplusplus
@@ -24,6 +24,7 @@ void unhandled_trap(trapframe_t*);
 void handle_syscall(trapframe_t*);
 void handle_breakpoint(trapframe_t*);
 void boot();
+void gtfo();
 
 #ifdef __cplusplus
 }