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bfin: make env offset sector aligned for bct-brettl2 and ibf-dsp561 boards
[u-boot] / common / kallsyms.c
1 /*
2  * Helper functions for working with the builtin symbol table
3  *
4  * Copyright (c) 2008-2009 Analog Devices Inc.
5  * Licensed under the GPL-2 or later.
6  */
7
8 #include <common.h>
9
10 /* We need the weak marking as this symbol is provided specially */
11 extern const char system_map[] __attribute__((weak));
12
13 /* Given an address, return a pointer to the symbol name and store
14  * the base address in caddr.  So if the symbol map had an entry:
15  *              03fb9b7c_spi_cs_deactivate
16  * Then the following call:
17  *              unsigned long base;
18  *              const char *sym = symbol_lookup(0x03fb9b80, &base);
19  * Would end up setting the variables like so:
20  *              base = 0x03fb9b7c;
21  *              sym = "_spi_cs_deactivate";
22  */
23 const char *symbol_lookup(unsigned long addr, unsigned long *caddr)
24 {
25         const char *sym, *csym;
26         char *esym;
27         unsigned long sym_addr;
28
29         sym = system_map;
30         csym = NULL;
31         *caddr = 0;
32
33         while (*sym) {
34                 sym_addr = simple_strtoul(sym, &esym, 16);
35                 sym = esym;
36                 if (sym_addr > addr)
37                         break;
38                 *caddr = sym_addr;
39                 csym = sym;
40                 sym += strlen(sym) + 1;
41         }
42
43         return csym;
44 }