diff options
| author | Christoph Hellwig <hch@lst.de> | 2019-06-13 10:08:59 +0300 |
|---|---|---|
| committer | Greg Ungerer <gerg@kernel.org> | 2019-06-24 02:16:47 +0300 |
| commit | 7a8998c9d830b59626e049a827678ba444fcf8e2 (patch) | |
| tree | e49c18fba9af2e182f1675ebb8025dcbb1277da6 | |
| parent | cf9a566c2c06ac34425c4faf6d32ac55ddbeea7a (diff) | |
| download | linux-7a8998c9d830b59626e049a827678ba444fcf8e2.tar.xz | |
binfmt_flat: provide an asm-generic/flat.h
This file implements the flat get/put reloc helpers for architectures
that do not need to overload the relocs by simply using get_user/put_user.
Note that many nommu architectures currently use {get,put}_unaligned, which
looks a little bogus and should probably later be switched over to this
version as well.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Vladimir Murzin <vladimir.murzin@arm.com>
Signed-off-by: Greg Ungerer <gerg@linux-m68k.org>
| -rw-r--r-- | arch/arm/include/asm/Kbuild | 1 | ||||
| -rw-r--r-- | arch/m68k/include/asm/flat.h | 21 | ||||
| -rw-r--r-- | include/asm-generic/flat.h (renamed from arch/arm/include/asm/flat.h) | 12 |
3 files changed, 6 insertions, 28 deletions
diff --git a/arch/arm/include/asm/Kbuild b/arch/arm/include/asm/Kbuild index a8f149ab45b8..6b2dc15b6dff 100644 --- a/arch/arm/include/asm/Kbuild +++ b/arch/arm/include/asm/Kbuild @@ -5,6 +5,7 @@ generic-y += early_ioremap.h generic-y += emergency-restart.h generic-y += exec.h generic-y += extable.h +generic-y += flat.h generic-y += irq_regs.h generic-y += kdebug.h generic-y += local.h diff --git a/arch/m68k/include/asm/flat.h b/arch/m68k/include/asm/flat.h index d7102fcd43eb..46379e08cdd6 100644 --- a/arch/m68k/include/asm/flat.h +++ b/arch/m68k/include/asm/flat.h @@ -6,26 +6,7 @@ #ifndef __M68KNOMMU_FLAT_H__ #define __M68KNOMMU_FLAT_H__ -#include <linux/uaccess.h> - -static inline int flat_get_addr_from_rp(u32 __user *rp, u32 relval, u32 flags, - u32 *addr, u32 *persistent) -{ -#ifdef CONFIG_CPU_HAS_NO_UNALIGNED - return copy_from_user(addr, rp, 4) ? -EFAULT : 0; -#else - return get_user(*addr, rp); -#endif -} - -static inline int flat_put_addr_at_rp(u32 __user *rp, u32 addr, u32 rel) -{ -#ifdef CONFIG_CPU_HAS_NO_UNALIGNED - return copy_to_user(rp, &addr, 4) ? -EFAULT : 0; -#else - return put_user(addr, rp); -#endif -} +#include <asm-generic/flat.h> #define FLAT_PLAT_INIT(regs) \ do { \ diff --git a/arch/arm/include/asm/flat.h b/include/asm-generic/flat.h index bbc27901446f..fcd2b45c0735 100644 --- a/arch/arm/include/asm/flat.h +++ b/include/asm-generic/flat.h @@ -1,15 +1,11 @@ /* SPDX-License-Identifier: GPL-2.0 */ -/* - * arch/arm/include/asm/flat.h -- uClinux flat-format executables - */ - -#ifndef __ARM_FLAT_H__ -#define __ARM_FLAT_H__ +#ifndef _ASM_GENERIC_FLAT_H +#define _ASM_GENERIC_FLAT_H #include <linux/uaccess.h> static inline int flat_get_addr_from_rp(u32 __user *rp, u32 relval, u32 flags, - u32 *addr, u32 *persistent) + u32 *addr, u32 *persistent) { #ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS return copy_from_user(addr, rp, 4) ? -EFAULT : 0; @@ -27,4 +23,4 @@ static inline int flat_put_addr_at_rp(u32 __user *rp, u32 addr, u32 rel) #endif } -#endif /* __ARM_FLAT_H__ */ +#endif /* _ASM_GENERIC_FLAT_H */ |