Gabe Black (gabeblack@chromium.org) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/3672
-gerrit
commit 2b0e7424aea1e72bea48e7bca28038622f35dd92 Author: Gabe Black gabeblack@google.com Date: Fri Jun 14 15:53:23 2013 -0700
ARM: Tell the linker memset and memcpy are functions.
The memset and memcpy functions are assembled as ARM code, likely because that's the default of the assembler. Without special annotation, the assembler and linker don't know that those symbols are functions which need special handling so that ARM/thumb issues are handled properly. This change adds that annotation which gets those functions working in Coreboot which is compiled as thumb. Libpayload and depthcharge are compiled as ARM so they don't *need* the annotation since it just works out in ARM mode, but it's the safe thing to do in case we change that in the future.
We should explicitly select ARM vs. thumb when assembling assembly files to be consistent across builds and toolchains.
Change-Id: I814b137064cf46ae9e2744ff6c223b695dc1ef01 Signed-off-by: Gabe Black gabeblack@chromium.org --- payloads/libpayload/arch/armv7/memcpy.S | 1 + payloads/libpayload/arch/armv7/memset.S | 1 + src/arch/armv7/memcpy.S | 1 + src/arch/armv7/memset.S | 1 + 4 files changed, 4 insertions(+)
diff --git a/payloads/libpayload/arch/armv7/memcpy.S b/payloads/libpayload/arch/armv7/memcpy.S index 549320c..e68b28f 100644 --- a/payloads/libpayload/arch/armv7/memcpy.S +++ b/payloads/libpayload/arch/armv7/memcpy.S @@ -57,6 +57,7 @@
/* Prototype: void *memcpy(void *dest, const void *src, size_t n); */
+.type memcpy, function .globl memcpy memcpy:
diff --git a/payloads/libpayload/arch/armv7/memset.S b/payloads/libpayload/arch/armv7/memset.S index 4ff4c3c..aa4f57a 100644 --- a/payloads/libpayload/arch/armv7/memset.S +++ b/payloads/libpayload/arch/armv7/memset.S @@ -27,6 +27,7 @@ * memset again. */
+.type memset, function .globl memset memset: ands r3, r0, #3 @ 1 unaligned? diff --git a/src/arch/armv7/memcpy.S b/src/arch/armv7/memcpy.S index f04113f..921fc2a 100644 --- a/src/arch/armv7/memcpy.S +++ b/src/arch/armv7/memcpy.S @@ -57,6 +57,7 @@
/* Prototype: void *memcpy(void *dest, const void *src, size_t n); */
+.type memcpy, function .globl memcpy memcpy:
diff --git a/src/arch/armv7/memset.S b/src/arch/armv7/memset.S index 3ea2721..a3cc947 100644 --- a/src/arch/armv7/memset.S +++ b/src/arch/armv7/memset.S @@ -27,6 +27,7 @@ * memset again. */
+.type memset, function .globl memset memset: ands r3, r0, #3 @ 1 unaligned?