diff options
Diffstat (limited to 'common')
| -rw-r--r-- | common/Makefile | 1 | ||||
| -rw-r--r-- | common/kallsyms.c | 44 | ||||
| -rw-r--r-- | common/system_map.c | 8 |
3 files changed, 53 insertions, 0 deletions
diff --git a/common/Makefile b/common/Makefile index 2ca10264c2b..ee0cb33aca3 100644 --- a/common/Makefile +++ b/common/Makefile @@ -153,6 +153,7 @@ COBJS-$(CONFIG_CMD_DOC) += docecc.o COBJS-$(CONFIG_CONSOLE_MUX) += iomux.o COBJS-y += flash.o COBJS-$(CONFIG_CMD_KGDB) += kgdb.o +COBJS-$(CONFIG_KALLSYMS) += kallsyms.o COBJS-$(CONFIG_LCD) += lcd.o COBJS-$(CONFIG_LYNXKDI) += lynxkdi.o COBJS-$(CONFIG_MODEM_SUPPORT) += modem.o diff --git a/common/kallsyms.c b/common/kallsyms.c new file mode 100644 index 00000000000..ce42a932bb8 --- /dev/null +++ b/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; +} diff --git a/common/system_map.c b/common/system_map.c new file mode 100644 index 00000000000..8307293bf3a --- /dev/null +++ b/common/system_map.c @@ -0,0 +1,8 @@ +/* + * The builtin symbol table for use with kallsyms + * + * Copyright (c) 2008-2009 Analog Devices Inc. + * Licensed under the GPL-2 or later. + */ + +const char const system_map[] = SYSTEM_MAP; |