Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / u-boot / common / kallsyms.c

diff --git a/qemu/roms/u-boot/common/kallsyms.c b/qemu/roms/u-boot/common/kallsyms.c
new file mode 100644 (file)
index 0000000..ce42a93
--- /dev/null
+++ b/qemu/roms/u-boot/common/kallsyms.c
@@ -0,0 +1,44 @@
+/*
+ * Helper functions for working with the builtin symbol table
+ *
+ * Copyright (c) 2008-2009 Analog Devices Inc.
+ * Licensed under the GPL-2 or later.
+ */
+
+#include <common.h>
+
+/* We need the weak marking as this symbol is provided specially */
+extern const char system_map[] __attribute__((weak));
+
+/* Given an address, return a pointer to the symbol name and store
+ * the base address in caddr.  So if the symbol map had an entry:
+ *             03fb9b7c_spi_cs_deactivate
+ * Then the following call:
+ *             unsigned long base;
+ *             const char *sym = symbol_lookup(0x03fb9b80, &base);
+ * Would end up setting the variables like so:
+ *             base = 0x03fb9b7c;
+ *             sym = "_spi_cs_deactivate";
+ */
+const char *symbol_lookup(unsigned long addr, unsigned long *caddr)
+{
+       const char *sym, *csym;
+       char *esym;
+       unsigned long sym_addr;
+
+       sym = system_map;
+       csym = NULL;
+       *caddr = 0;
+
+       while (*sym) {
+               sym_addr = simple_strtoul(sym, &esym, 16);
+               sym = esym;
+               if (sym_addr > addr)
+                       break;
+               *caddr = sym_addr;
+               csym = sym;
+               sym += strlen(sym) + 1;
+       }
+
+       return csym;
+}