| Greg Ungerer | acc46c0 | 2006-09-14 00:28:26 +1000 | [diff] [blame] | 1 | /* |
| Russell King | 4baa992 | 2008-08-02 10:55:55 +0100 | [diff] [blame] | 2 | * arch/arm/include/asm/flat.h -- uClinux flat-format executables |
| Greg Ungerer | acc46c0 | 2006-09-14 00:28:26 +1000 | [diff] [blame] | 3 | */ |
| 4 | |
| 5 | #ifndef __ARM_FLAT_H__ |
| 6 | #define __ARM_FLAT_H__ |
| 7 | |
| Al Viro | 468138d | 2017-05-02 19:52:17 -0400 | [diff] [blame] | 8 | #include <linux/uaccess.h> |
| 9 | |
| Greg Ungerer | acc46c0 | 2006-09-14 00:28:26 +1000 | [diff] [blame] | 10 | #define flat_argvp_envp_on_stack() 1 |
| 11 | #define flat_old_ram_flag(flags) (flags) |
| 12 | #define flat_reloc_valid(reloc, size) ((reloc) <= (size)) |
| Al Viro | 468138d | 2017-05-02 19:52:17 -0400 | [diff] [blame] | 13 | |
| 14 | static inline int flat_get_addr_from_rp(u32 __user *rp, u32 relval, u32 flags, |
| 15 | u32 *addr, u32 *persistent) |
| 16 | { |
| 17 | #ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS |
| 18 | return copy_from_user(addr, rp, 4) ? -EFAULT : 0; |
| 19 | #else |
| 20 | return get_user(*addr, rp); |
| 21 | #endif |
| 22 | } |
| 23 | |
| 24 | static inline int flat_put_addr_at_rp(u32 __user *rp, u32 addr, u32 rel) |
| 25 | { |
| 26 | #ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS |
| 27 | return copy_to_user(rp, &addr, 4) ? -EFAULT : 0; |
| 28 | #else |
| 29 | return put_user(addr, rp); |
| 30 | #endif |
| 31 | } |
| 32 | |
| Greg Ungerer | acc46c0 | 2006-09-14 00:28:26 +1000 | [diff] [blame] | 33 | #define flat_get_relocate_addr(rel) (rel) |
| Russell King | fd3d728 | 2007-10-27 21:48:43 +0100 | [diff] [blame] | 34 | #define flat_set_persistent(relval, p) 0 |
| Greg Ungerer | acc46c0 | 2006-09-14 00:28:26 +1000 | [diff] [blame] | 35 | |
| 36 | #endif /* __ARM_FLAT_H__ */ |