Add a function to process a single ELF relocation. Signed-off-by: Simon Glass <s...@chromium.org> --- arch/arm/lib/Makefile | 4 +++ arch/arm/lib/arch_reloc.c | 47 +++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 51 insertions(+), 0 deletions(-) create mode 100644 arch/arm/lib/arch_reloc.c
diff --git a/arch/arm/lib/Makefile b/arch/arm/lib/Makefile index 300c8fa..ca2802a 100644 --- a/arch/arm/lib/Makefile +++ b/arch/arm/lib/Makefile @@ -48,6 +48,10 @@ SOBJS-$(CONFIG_USE_ARCH_MEMSET) += memset.o SOBJS-$(CONFIG_USE_ARCH_MEMCPY) += memcpy.o endif +ifndef CONFIG_SYS_LEGACY_BOARD +COBJS-y += arch_reloc.o +endif + SRCS := $(GLSOBJS:.o=.S) $(GLCOBJS:.o=.c) \ $(SOBJS-y:.o=.S) $(COBJS-y:.o=.c) OBJS := $(addprefix $(obj),$(SOBJS-y) $(COBJS-y)) diff --git a/arch/arm/lib/arch_reloc.c b/arch/arm/lib/arch_reloc.c new file mode 100644 index 0000000..80cf5a0 --- /dev/null +++ b/arch/arm/lib/arch_reloc.c @@ -0,0 +1,47 @@ +/* + * Copyright (c) 2011 The Chromium OS Authors. + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include <common.h> +#include <elf.h> + +int arch_elf_relocate_entry(Elf32_Addr *addr, Elf32_Word info, + Elf32_Sym *symtab, ulong reloc_off) +{ + int sym; + + switch (ELF32_R_TYPE(info)) { + /* relative fix: increase location by offset */ + case 23: /* TODO: add R_ARM_... defines to elf.h */ + *addr += reloc_off; + break; + + /* absolute fix: set location to (offset) symbol value */ + case 2: + sym = ELF32_R_SYM(info); + *addr = symtab[sym].st_value + reloc_off; + break; + + default: + debug("*** Invalid relocation\n"); + return -1; + } + return 0; +} -- 1.7.3.1 _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot