> 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
 21:56:15 up 7 days,  6:53,  1 user,  load average: 0.44, 0.72, 0.84

abstract-machine/klib/src/printf.c

@@ -73,12 +73,12 @@ static inline int print_fmt(char **out, int n, const char** fmt, va_list (*ap))
 }
 
 int rvsnprintf(char* out, size_t n, const char* fmt, va_list ap) {
-    int ret = 0;
+    int ret = n;
     while(*fmt && n) {
         if (*fmt == '%') {
             // FIXME
             fmt++;
-            print_fmt(&out, n, &fmt, (va_list*)&ap);
+            n -= print_fmt(&out, n, &fmt, (va_list*)&ap);
             continue;
         }
         *out = *fmt;
@@ -87,7 +87,7 @@ int rvsnprintf(char* out, size_t n, const char* fmt, va_list ap) {
         n --;
     }
     *out = '\0';
-    return ret;
+    return ret - n;
 }
 
 #endif

nanos-lite/src/device.c

@@ -27,7 +27,6 @@ size_t events_read(void *buf, size_t offset, size_t len) {
   if (kb.keycode == AM_KEY_NONE) {
     return 0;
   }
-  TRACE("key %s\n", keyname[kb.keycode]);
   return snprintf(buf, len, "%s %s\n", kb.keydown ? "kd" : "ku", keyname[kb.keycode]);
 }