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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2019-07-10 21:42:03 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-07-10 21:42:03 -0700 |
| commit | 398364a35daed7361e76c3666fb9a97792edce09 (patch) | |
| tree | 7a63b4df27d2dc75da8549499c79805128183f28 /include/asm-generic | |
| parent | d2b6b4c832f7e3067709e8d4970b7b82b44419ac (diff) | |
| parent | ad97f9df0fee4ddc9ef056dda4dcbc6630d9f972 (diff) | |
Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu
Pull m68nommu updates from Greg Ungerer:
"A series of cleanups for the FLAT format binary loader, binfmt_flat,
from Christoph.
The end goal is to support no-MMU on RISC-V, and the last patch
enables that"
* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu:
riscv: add binfmt_flat support
binfmt_flat: don't offset the data start
binfmt_flat: move the MAX_SHARED_LIBS definition to binfmt_flat.c
binfmt_flat: remove the persistent argument from flat_get_addr_from_rp
binfmt_flat: provide an asm-generic/flat.h
binfmt_flat: make support for old format binaries optional
binfmt_flat: add a ARCH_HAS_BINFMT_FLAT option
binfmt_flat: add endianess annotations
binfmt_flat: use fixed size type for the on-disk format
binfmt_flat: consolidate two version of flat_v2_reloc_t
binfmt_flat: remove the unused OLD_FLAT_FLAG_RAM definition
binfmt_flat: remove the uapi <linux/flat.h> header
binfmt_flat: replace flat_argvp_envp_on_stack with a Kconfig variable
binfmt_flat: remove flat_old_ram_flag
binfmt_flat: provide a default version of flat_get_relocate_addr
binfmt_flat: remove flat_set_persistent
binfmt_flat: remove flat_reloc_valid
Diffstat (limited to 'include/asm-generic')
| -rw-r--r-- | include/asm-generic/flat.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/include/asm-generic/flat.h b/include/asm-generic/flat.h new file mode 100644 index 000000000000..1928a3596938 --- /dev/null +++ b/include/asm-generic/flat.h @@ -0,0 +1,26 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#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) +{ +#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 /* _ASM_GENERIC_FLAT_H */ |