diff options
Diffstat (limited to 'recipes/linux/linux-openmoko-2.6.32/0001-add-noinline-and-noclone-attributes-to-naked-functio.patch')
| -rw-r--r-- | recipes/linux/linux-openmoko-2.6.32/0001-add-noinline-and-noclone-attributes-to-naked-functio.patch | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/recipes/linux/linux-openmoko-2.6.32/0001-add-noinline-and-noclone-attributes-to-naked-functio.patch b/recipes/linux/linux-openmoko-2.6.32/0001-add-noinline-and-noclone-attributes-to-naked-functio.patch new file mode 100644 index 0000000000..ac1efaec25 --- /dev/null +++ b/recipes/linux/linux-openmoko-2.6.32/0001-add-noinline-and-noclone-attributes-to-naked-functio.patch @@ -0,0 +1,52 @@ +From 6d97e1b1c2434fb769be7a72813efd11925225a9 Mon Sep 17 00:00:00 2001 +From: Khem Raj <raj.khem@gmail.com> +Date: Sun, 6 Jun 2010 03:28:43 +0200 +Subject: [PATCH 03/22] add noinline and noclone attributes to naked functions + +Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com> +--- + include/linux/compiler-gcc.h | 11 ++++++++++- + include/linux/compiler-gcc4.h | 2 ++ + 2 files changed, 12 insertions(+), 1 deletions(-) + +diff --git a/include/linux/compiler-gcc.h b/include/linux/compiler-gcc.h +index a3ed7cb..132a651 100644 +--- a/include/linux/compiler-gcc.h ++++ b/include/linux/compiler-gcc.h +@@ -58,8 +58,12 @@ + * naked functions because then mcount is called without stack and frame pointer + * being set up and there is no chance to restore the lr register to the value + * before mcount was called. ++ * ++ * The asm() bodies of naked functions often depend on standard calling conventions, ++ * therefore they must be noinline and noclone. GCC 4.[56] currently fail to enforce ++ * this, so we must do so ourselves. See GCC PR44290. + */ +-#define __naked __attribute__((naked)) notrace ++#define __naked __attribute__((naked)) noinline __noclone notrace + + #define __noreturn __attribute__((noreturn)) + +@@ -84,3 +88,8 @@ + #define _gcc_header(x) __gcc_header(linux/compiler-gcc##x.h) + #define gcc_header(x) _gcc_header(x) + #include gcc_header(__GNUC__) ++ ++#if !defined(__noclone) ++#define __noclone /* not needed */ ++#endif ++ +diff --git a/include/linux/compiler-gcc4.h b/include/linux/compiler-gcc4.h +index 450fa59..cd5932a 100644 +--- a/include/linux/compiler-gcc4.h ++++ b/include/linux/compiler-gcc4.h +@@ -36,4 +36,6 @@ + the kernel context */ + #define __cold __attribute__((__cold__)) + ++/* Mark a function definition as prohibited from being cloned. */ ++#define __noclone __attribute__((__noclone__)) + #endif +-- +1.7.1.1 + |