projects / J-u-boot.git / blame
| Commit | Line | Data |
|---|---|---|
| ecb1dc89 MF |
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 | } |