46 lines
1 KiB
C
46 lines
1 KiB
C
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/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* flat.h -- uClinux flat-format executables
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*/
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#ifndef __M68KNOMMU_FLAT_H__
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#define __M68KNOMMU_FLAT_H__
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#include <linux/uaccess.h>
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#define flat_argvp_envp_on_stack() 1
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#define flat_old_ram_flag(flags) (flags)
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#define flat_reloc_valid(reloc, size) ((reloc) <= (size))
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static inline int flat_get_addr_from_rp(u32 __user *rp, u32 relval, u32 flags,
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u32 *addr, u32 *persistent)
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{
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#ifdef CONFIG_CPU_HAS_NO_UNALIGNED
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return copy_from_user(addr, rp, 4) ? -EFAULT : 0;
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#else
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return get_user(*addr, rp);
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#endif
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}
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static inline int flat_put_addr_at_rp(u32 __user *rp, u32 addr, u32 rel)
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{
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#ifdef CONFIG_CPU_HAS_NO_UNALIGNED
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return copy_to_user(rp, &addr, 4) ? -EFAULT : 0;
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#else
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return put_user(addr, rp);
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#endif
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}
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#define flat_get_relocate_addr(rel) (rel)
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static inline int flat_set_persistent(u32 relval, u32 *persistent)
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{
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return 0;
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}
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#define FLAT_PLAT_INIT(regs) \
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do { \
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if (current->mm) \
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(regs)->d5 = current->mm->start_data; \
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} while (0)
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#endif /* __M68KNOMMU_FLAT_H__ */
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