diff options
| author | Christoph Hellwig <hch@lst.de> | 2019-06-13 09:08:59 +0200 |
|---|---|---|
| committer | Greg Ungerer <gerg@kernel.org> | 2019-06-24 09:16:47 +1000 |
| commit | 7a8998c9d830b59626e049a827678ba444fcf8e2 (patch) | |
| tree | e49c18fba9af2e182f1675ebb8025dcbb1277da6 /arch/arm/include | |
| parent | cf9a566c2c06ac34425c4faf6d32ac55ddbeea7a (diff) | |
| download | linux-7a8998c9d830b59626e049a827678ba444fcf8e2.tar.bz2 | |
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>
Diffstat (limited to 'arch/arm/include')
| -rw-r--r-- | arch/arm/include/asm/Kbuild | 1 | ||||
| -rw-r--r-- | arch/arm/include/asm/flat.h | 30 |
2 files changed, 1 insertions, 30 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/arm/include/asm/flat.h b/arch/arm/include/asm/flat.h deleted file mode 100644 index bbc27901446f..000000000000 --- a/arch/arm/include/asm/flat.h +++ /dev/null @@ -1,30 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -/* - * arch/arm/include/asm/flat.h -- uClinux flat-format executables - */ - -#ifndef __ARM_FLAT_H__ -#define __ARM_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) -{ -#ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS - 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) -{ -#ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS - return copy_to_user(rp, &addr, 4) ? -EFAULT : 0; -#else - return put_user(addr, rp); -#endif -} - -#endif /* __ARM_FLAT_H__ */ |