vgabios: Add scrolling for linear (packed pixel) graphics mode.

[seabios.git] / src / util.c

diff --git a/src/util.c b/src/util.c
index 8e02d1e05444554802f9535a38b4d6e5c36677e7..ed73d632f11e619d1e83fbba7d7c581f82adc481 100644 (file)
--- a/src/util.c
+++ b/src/util.c
@@ -150,6 +150,15 @@ memset(void *s, int c, size_t n)
     return s;
 }
 
+void memset_fl(void *ptr, u8 val, size_t size)
+{
+    if (MODESEGMENT)
+        memset_far(FLATPTR_TO_SEG(ptr), (void*)(FLATPTR_TO_OFFSET(ptr)),
+                   val, size);
+    else
+        memset(ptr, val, size);
+}
+
 inline void
 memcpy_far(u16 d_seg, void *d_far, u16 s_seg, const void *s_far, size_t len)
 {
@@ -253,6 +262,25 @@ strtcpy(char *dest, const char *src, size_t len)
     return dest;
 }
 
+// locate first occurance of character c in the string s
+char *
+strchr(const char *s, int c)
+{
+    for (; *s; s++)
+        if (*s == c)
+            return (char*)s;
+    return NULL;
+}
+
+// Remove any trailing blank characters (spaces, new lines, carriage returns)
+void
+nullTrailingSpace(char *buf)
+{
+    int len = strlen(buf);
+    char *end = &buf[len-1];
+    while (end >= buf && *end <= ' ')
+        *(end--) = '\0';
+}
 
 /****************************************************************
  * Keyboard calls