projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 1da177e4 | 2 | /* |
| 120c4d95 | 3 | * flat.h -- uClinux flat-format executables |
| 1da177e4 LT |
4 | */ |
| 5 | ||
| 6 | #ifndef __M68KNOMMU_FLAT_H__ | |
| 7 | #define __M68KNOMMU_FLAT_H__ | |
| 8 | ||
| 468138d7 AV |
9 | #include <linux/uaccess.h> |
| 10 | ||
| 1da177e4 LT |
11 | #define flat_argvp_envp_on_stack() 1 |
| 12 | #define flat_old_ram_flag(flags) (flags) | |
| 13 | #define flat_reloc_valid(reloc, size) ((reloc) <= (size)) | |
| 468138d7 AV |
14 | static inline int flat_get_addr_from_rp(u32 __user *rp, u32 relval, u32 flags, |
| 15 | u32 *addr, u32 *persistent) | |
| 16 | { | |
| 17 | #ifdef CONFIG_CPU_HAS_NO_UNALIGNED | |
| 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 | #ifdef CONFIG_CPU_HAS_NO_UNALIGNED | |
| 27 | return copy_to_user(rp, &addr, 4) ? -EFAULT : 0; | |
| 28 | #else | |
| 29 | return put_user(addr, rp); | |
| 30 | #endif | |
| 31 | } | |
| 1da177e4 | 32 | #define flat_get_relocate_addr(rel) (rel) |
| f106eac9 | 33 | |
| 9f42ef4b | 34 | static inline int flat_set_persistent(u32 relval, u32 *persistent) |
| f106eac9 EG |
35 | { |
| 36 | return 0; | |
| 37 | } | |
| 1da177e4 | 38 | |
| 89e6ffd9 GU |
39 | #define FLAT_PLAT_INIT(regs) \ |
| 40 | do { \ | |
| 41 | if (current->mm) \ | |
| 42 | (regs)->d5 = current->mm->start_data; \ | |
| 43 | } while (0) | |
| 44 | ||
| 1da177e4 | 45 | #endif /* __M68KNOMMU_FLAT_H__ */ |