| /* SPDX-License-Identifier: GPL-2.0 */ |
| /* |
| * flat.h -- uClinux flat-format executables |
| */ |
| |
| #ifndef __M68KNOMMU_FLAT_H__ |
| #define __M68KNOMMU_FLAT_H__ |
| |
| #include <linux/uaccess.h> |
| |
| #define flat_argvp_envp_on_stack() 1 |
| #define flat_old_ram_flag(flags) (flags) |
| #define flat_reloc_valid(reloc, size) ((reloc) <= (size)) |
| 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 |
| } |
| #define flat_get_relocate_addr(rel) (rel) |
| |
| static inline int flat_set_persistent(u32 relval, u32 *persistent) |
| { |
| return 0; |
| } |
| |
| #define FLAT_PLAT_INIT(regs) \ |
| do { \ |
| if (current->mm) \ |
| (regs)->d5 = current->mm->start_data; \ |
| } while (0) |
| |
| #endif /* __M68KNOMMU_FLAT_H__ */ |
