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authorAlbert ARIBAUD <albert.u.boot@aribaud.net>2013-06-11 14:17:33 +0200
committerAlbert ARIBAUD <albert.u.boot@aribaud.net>2013-06-21 23:05:05 +0200
commitd026dec8751378473b4f12eb87717c8059472b3e (patch)
tree57b335731bbd1d1e445ad351ca43bfe49322da99 /arch/arm/lib
parentdf84502edffd1da48588a212b402602f032ed53d (diff)
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arm: make __image_copy_{start, end} compiler-generated
This change is only done where needed: some linker scripts may contain __image_copy_{start,end} yet remain unchanged. Also, __image_copy_end needs its own section; putting it in relocation sections changes their flags and makes relocation break. Signed-off-by: Albert ARIBAUD <albert.u.boot@aribaud.net> Tested-by: Lubomir Popov <lpopov@mm-sol.com> Tested-by: Jeroen Hofstee <jeroen@myspectrum.nl> Reviewed-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
Diffstat (limited to 'arch/arm/lib')
-rw-r--r--arch/arm/lib/relocate.S7
-rw-r--r--arch/arm/lib/sections.c2
2 files changed, 4 insertions, 5 deletions
diff --git a/arch/arm/lib/relocate.S b/arch/arm/lib/relocate.S
index 7a7c4c0..3767a95 100644
--- a/arch/arm/lib/relocate.S
+++ b/arch/arm/lib/relocate.S
@@ -39,13 +39,12 @@
ENTRY(relocate_code)
mov r6, r0 /* save addr of destination */
- ldr r0, =_start /* r0 <- SRC &_start */
+ ldr r0, =__image_copy_start /* r0 <- SRC &__image_copy_start */
subs r9, r6, r0 /* r9 <- relocation offset */
beq relocate_done /* skip relocation */
mov r1, r6 /* r1 <- scratch for copy loop */
adr r7, relocate_code /* r7 <- SRC &relocate_code */
- ldr r3, _image_copy_end_ofs /* r3 <- __image_copy_end local ofs */
- add r2, r7, r3 /* r2 <- SRC &__image_copy_end */
+ ldr r2, =__image_copy_end /* r2 <- SRC &__image_copy_end */
copy_loop:
ldmia r0!, {r10-r11} /* copy from source address [r0] */
@@ -89,8 +88,6 @@ relocate_done:
bx lr
#endif
-_image_copy_end_ofs:
- .word __image_copy_end - relocate_code
_rel_dyn_start_ofs:
.word __rel_dyn_start - relocate_code
_rel_dyn_end_ofs:
diff --git a/arch/arm/lib/sections.c b/arch/arm/lib/sections.c
index e52fec9..03e846f 100644
--- a/arch/arm/lib/sections.c
+++ b/arch/arm/lib/sections.c
@@ -37,3 +37,5 @@
char __bss_start[0] __attribute__((section(".__bss_start")));
char __bss_end[0] __attribute__((section(".__bss_end")));
+char __image_copy_start[0] __attribute__((section(".__image_copy_start")));
+char __image_copy_end[0] __attribute__((section(".__image_copy_end")));