diff options
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/include/asm/mmu.h | 4 | ||||
| -rw-r--r-- | arch/arm/kernel/elf.c | 22 |
2 files changed, 26 insertions, 0 deletions
diff --git a/arch/arm/include/asm/mmu.h b/arch/arm/include/asm/mmu.h index e0eb16680a5b..bdec37c6ac35 100644 --- a/arch/arm/include/asm/mmu.h +++ b/arch/arm/include/asm/mmu.h @@ -14,6 +14,10 @@ typedef struct { #ifdef CONFIG_VDSO unsigned long vdso; #endif +#ifdef CONFIG_BINFMT_ELF_FDPIC + unsigned long exec_fdpic_loadmap; + unsigned long interp_fdpic_loadmap; +#endif } mm_context_t; #ifdef CONFIG_CPU_HAS_ASID diff --git a/arch/arm/kernel/elf.c b/arch/arm/kernel/elf.c index 52fb98358d9d..569e69ece5ca 100644 --- a/arch/arm/kernel/elf.c +++ b/arch/arm/kernel/elf.c @@ -3,6 +3,7 @@ #include <linux/personality.h> #include <linux/binfmts.h> #include <linux/elf.h> +#include <linux/elf-fdpic.h> #include <asm/system_info.h> int elf_check_arch(const struct elf32_hdr *x) @@ -89,3 +90,24 @@ int arm_elf_read_implies_exec(int executable_stack) return 0; } EXPORT_SYMBOL(arm_elf_read_implies_exec); + +#if defined(CONFIG_MMU) && defined(CONFIG_BINFMT_ELF_FDPIC) + +void elf_fdpic_arch_lay_out_mm(struct elf_fdpic_params *exec_params, + struct elf_fdpic_params *interp_params, + unsigned long *start_stack, + unsigned long *start_brk) +{ + elf_set_personality(&exec_params->hdr); + + exec_params->load_addr = 0x8000; + interp_params->load_addr = ELF_ET_DYN_BASE; + *start_stack = TASK_SIZE - SZ_16M; + + if ((exec_params->flags & ELF_FDPIC_FLAG_ARRANGEMENT) == ELF_FDPIC_FLAG_INDEPENDENT) { + exec_params->flags &= ~ELF_FDPIC_FLAG_ARRANGEMENT; + exec_params->flags |= ELF_FDPIC_FLAG_CONSTDISP; + } +} + +#endif |