diff options
Diffstat (limited to 'arch/arm/lib32/runtime-offset.S')
| -rw-r--r-- | arch/arm/lib32/runtime-offset.S | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/arch/arm/lib32/runtime-offset.S b/arch/arm/lib32/runtime-offset.S new file mode 100644 index 0000000000..f10c4c8469 --- /dev/null +++ b/arch/arm/lib32/runtime-offset.S @@ -0,0 +1,52 @@ +#include <linux/linkage.h> +#include <asm/assembler.h> + +.section ".text_bare_init","ax" + +/* + * Get the offset between the link address and the address + * we are currently running at. + */ +ENTRY(get_runtime_offset) +1: adr r0, 1b + ldr r1, linkadr + subs r0, r1, r0 +THUMB( subs r0, r0, #1) + mov pc, lr + +linkadr: +.word get_runtime_offset +ENDPROC(get_runtime_offset) + +.globl __ld_var_base +__ld_var_base: + +/* + * Functions to calculate selected linker supplied variables during runtime. + * This is needed for relocatable binaries when the linker variables are + * needed before finxing up the relocations. + */ +.macro ld_var_entry name + ENTRY(__ld_var_\name) + ldr r0, __\name + b 1f + __\name: .word \name - __ld_var_base + ENDPROC(__ld_var_\name) +.endm + +ld_var_entry _text +ld_var_entry __rel_dyn_start +ld_var_entry __rel_dyn_end +ld_var_entry __dynsym_start +ld_var_entry __dynsym_end +ld_var_entry _barebox_image_size +ld_var_entry __bss_start +ld_var_entry __bss_stop +#ifdef __PBL__ +ld_var_entry __image_end +#endif + +1: + ldr r1, =__ld_var_base + adds r0, r0, r1 + mov pc, lr |