1 files changed, 92 insertions, 0 deletions
diff --git a/contrib/syslinux-4.02/dos/argv.c b/contrib/syslinux-4.02/dos/argv.c
new file mode 100644
index 0000000..056aae5
--- /dev/null
+++ b/contrib/syslinux-4.02/dos/argv.c
@@ -0,0 +1,92 @@
+/* ----------------------------------------------------------------------- *
+ *
+ *   Copyright 2004-2008 H. Peter Anvin - All Rights Reserved
+ *
+ *   Permission is hereby granted, free of charge, to any person
+ *   obtaining a copy of this software and associated documentation
+ *   files (the "Software"), to deal in the Software without
+ *   restriction, including without limitation the rights to use,
+ *   copy, modify, merge, publish, distribute, sublicense, and/or
+ *   sell copies of the Software, and to permit persons to whom
+ *   the Software is furnished to do so, subject to the following
+ *   conditions:
+ *
+ *   The above copyright notice and this permission notice shall
+ *   be included in all copies or substantial portions of the Software.
+ *
+ *   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ *   EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ *   OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ *   NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ *   HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ *   WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ *   FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ *   OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * ----------------------------------------------------------------------- */
+
+/*
+ * argv.c
+ *
+ * Parse a single C string into argc and argv (argc is return value.)
+ * memptr points to available memory.
+ */
+
+#include <inttypes.h>
+#include <stddef.h>
+#include <stdio.h>
+
+#define ALIGN_UP(p,t)       ((t *)(((uintptr_t)(p) + (sizeof(t)-1)) & ~(sizeof(t)-1)))
+
+extern char __heap_start[];
+void *__mem_end = &__heap_start;	/* Global variable for use by malloc() */
+
+int __parse_argv(char ***argv, const char *str)
+{
+    char *mem = __mem_end;
+    const char *p = str;
+    char *q = mem;
+    char *r;
+    char **arg;
+    int wasspace = 0;
+    int argc = 1;
+
+    /* First copy the string, turning whitespace runs into nulls */
+    for (p = str;; p++) {
+	if (*p <= ' ') {
+	    if (!wasspace) {
+		wasspace = 1;
+		*q++ = '\0';
+	    }
+	} else {
+	    if (wasspace) {
+		argc++;
+		wasspace = 0;
+	    }
+	    *q++ = *p;
+	}
+
+	/* This test is AFTER we have processed the null byte;
+	   we treat it as a whitespace character so it terminates
+	   the last argument */
+	if (!*p)
+	    break;
+    }
+
+    /* Now create argv */
+    arg = ALIGN_UP(q, char *);
+    *argv = arg;
+    *arg++ = mem;		/* argv[0] */
+
+    q--;			/* Point q to final null */
+    for (r = mem; r < q; r++) {
+	if (*r == '\0') {
+	    *arg++ = r + 1;
+	}
+    }
+
+    *arg++ = NULL;		/* Null pointer at the end */
+    __mem_end = arg;		/* End of memory we used */
+
+    return argc;
+}