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-rw-r--r--com32/elflink/ldlinux/adv.c55
1 files changed, 55 insertions, 0 deletions
diff --git a/com32/elflink/ldlinux/adv.c b/com32/elflink/ldlinux/adv.c
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+/* ----------------------------------------------------------------------- *
+ *
+ * Copyright 2007-2008 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.
+ *
+ * ----------------------------------------------------------------------- */
+
+/*
+ * syslinux/adv.c
+ *
+ * Access the syslinux auxilliary data vector
+ */
+
+#include <syslinux/adv.h>
+#include <klibc/compiler.h>
+#include <inttypes.h>
+#include <com32.h>
+
+__export void *__syslinux_adv_ptr;
+__export size_t __syslinux_adv_size;
+
+extern void adv_init(void);
+void __constructor __syslinux_init(void)
+{
+ static com32sys_t reg;
+
+ /* Initialize the ADV structure */
+ reg.eax.w[0] = 0x0025;
+ __intcall(0x22, &reg, NULL);
+
+ reg.eax.w[0] = 0x001c;
+ __intcall(0x22, &reg, &reg);
+ __syslinux_adv_ptr = MK_PTR(reg.es, reg.ebx.w[0]);
+ __syslinux_adv_size = reg.ecx.w[0];
+}