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Thumb-2: Add support for loadable modules

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Modules compiled to Thumb-2 have two additional relocations needing to
be resolved at load time, R_ARM_THM_CALL and R_ARM_THM_JUMP24, for BL
and B.W instructions. The maximum Thumb-2 addressing range is +/-2^24
(+/-16MB) therefore the MODULES_VADDR macro in asm/memory.h is set to
(MODULES_END - 8MB) for the Thumb-2 compiled kernel.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
Catalin Marinas
2009-07-24 12:32:59 +01:00
parent 0e056f20f1
commit adca6dc23b
3 changed files with 62 additions and 0 deletions
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3
arch/arm/include/asm/elf.h
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@@ -55,6 +55,9 @@ typedef struct user_fp elf_fpregset_t;
#define R_ARM_MOVW_ABS_NC 43
#define R_ARM_MOVT_ABS 44
#define R_ARM_THM_CALL 10
#define R_ARM_THM_JUMP24 30
/*
* These are used to set parameters in the core dumps.
*/