From: Mirko Vogt <mirko@openwrt.org>
Date: Fri, 10 Apr 2009 18:47:05 +0000 (+0000)
Subject: add the R_ARM_V4BX relocation to the ARM kernel module loader
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=ae9a275a8e59093bf0c00e11ffda1aa5f3e57a61;p=openwrt%2Fstaging%2Fjow.git

add the R_ARM_V4BX relocation to the ARM kernel module loader

SVN-Revision: 15208
---

diff --git a/target/linux/generic-2.6/patches-2.6.28/230-add-r_arm_v4bx-relocation-for-arm-module-loader.patch b/target/linux/generic-2.6/patches-2.6.28/230-add-r_arm_v4bx-relocation-for-arm-module-loader.patch
new file mode 100644
index 0000000000..3fac7aba43
--- /dev/null
+++ b/target/linux/generic-2.6/patches-2.6.28/230-add-r_arm_v4bx-relocation-for-arm-module-loader.patch
@@ -0,0 +1,33 @@
+diff --git a/arch/arm/include/asm/elf.h b/arch/arm/include/asm/elf.h
+index a58378c..ce3b36e 100644
+--- a/arch/arm/include/asm/elf.h
++++ b/arch/arm/include/asm/elf.h
+@@ -50,6 +50,7 @@  typedef struct user_fp elf_fpregset_t;
+ #define R_ARM_ABS32	2
+ #define R_ARM_CALL	28
+ #define R_ARM_JUMP24	29
++#define R_ARM_V4BX	40
+ 
+ /*
+  * These are used to set parameters in the core dumps.
+diff --git a/arch/arm/kernel/module.c b/arch/arm/kernel/module.c
+index dab48f2..9f509fd 100644
+--- a/arch/arm/kernel/module.c
++++ b/arch/arm/kernel/module.c
+@@ -132,6 +132,15 @@  apply_relocate(Elf32_Shdr *sechdrs, const char *strtab, unsigned int symindex,
+ 			*(u32 *)loc |= offset & 0x00ffffff;
+ 			break;
+ 
++	       case R_ARM_V4BX:
++		       /* Preserve Rm and the condition code. Alter
++			* other bits to re-code instruction as
++			* MOV PC,Rm.
++			*/
++		       *(u32 *)loc &= 0xf000000f;
++		       *(u32 *)loc |= 0x01a0f000;
++		       break;
++
+ 		default:
+ 			printk(KERN_ERR "%s: unknown relocation: %u\n",
+ 			       module->name, ELF32_R_TYPE(rel->r_info));
+