diff options
Diffstat (limited to 'arch/frv/mm/elf-fdpic.c')
| -rw-r--r-- | arch/frv/mm/elf-fdpic.c | 114 |
1 files changed, 0 insertions, 114 deletions
diff --git a/arch/frv/mm/elf-fdpic.c b/arch/frv/mm/elf-fdpic.c deleted file mode 100644 index 46aa289c5102..000000000000 --- a/arch/frv/mm/elf-fdpic.c +++ /dev/null @@ -1,114 +0,0 @@ -/* elf-fdpic.c: ELF FDPIC memory layout management - * - * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved. - * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - */ - -#include <linux/sched.h> -#include <linux/sched/mm.h> -#include <linux/mm.h> -#include <linux/fs.h> -#include <linux/elf-fdpic.h> -#include <asm/mman.h> - -/*****************************************************************************/ -/* - * lay out the userspace VM according to our grand design - */ -#ifdef CONFIG_MMU -void elf_fdpic_arch_lay_out_mm(struct elf_fdpic_params *exec_params, - struct elf_fdpic_params *interp_params, - unsigned long *start_stack, - unsigned long *start_brk) -{ - *start_stack = 0x02200000UL; - - /* if the only executable is a shared object, assume that it is an interpreter rather than - * a true executable, and map it such that "ld.so --list" comes out right - */ - if (!(interp_params->flags & ELF_FDPIC_FLAG_PRESENT) && - exec_params->hdr.e_type != ET_EXEC - ) { - exec_params->load_addr = PAGE_SIZE; - - *start_brk = 0x80000000UL; - } - else { - exec_params->load_addr = 0x02200000UL; - - if ((exec_params->flags & ELF_FDPIC_FLAG_ARRANGEMENT) == - ELF_FDPIC_FLAG_INDEPENDENT - ) { - exec_params->flags &= ~ELF_FDPIC_FLAG_ARRANGEMENT; - exec_params->flags |= ELF_FDPIC_FLAG_CONSTDISP; - } - } - -} /* end elf_fdpic_arch_lay_out_mm() */ -#endif - -/*****************************************************************************/ -/* - * place non-fixed mmaps firstly in the bottom part of memory, working up, and then in the top part - * of memory, working down - */ -unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, unsigned long len, - unsigned long pgoff, unsigned long flags) -{ - struct vm_area_struct *vma; - struct vm_unmapped_area_info info; - - if (len > TASK_SIZE) - return -ENOMEM; - - /* handle MAP_FIXED */ - if (flags & MAP_FIXED) - return addr; - - /* only honour a hint if we're not going to clobber something doing so */ - if (addr) { - addr = PAGE_ALIGN(addr); - vma = find_vma(current->mm, addr); - if (TASK_SIZE - len >= addr && - (!vma || addr + len <= vm_start_gap(vma))) - goto success; - } - - /* search between the bottom of user VM and the stack grow area */ - info.flags = 0; - info.length = len; - info.low_limit = PAGE_SIZE; - info.high_limit = (current->mm->start_stack - 0x00200000); - info.align_mask = 0; - info.align_offset = 0; - addr = vm_unmapped_area(&info); - if (!(addr & ~PAGE_MASK)) - goto success; - VM_BUG_ON(addr != -ENOMEM); - - /* search from just above the WorkRAM area to the top of memory */ - info.low_limit = PAGE_ALIGN(0x80000000); - info.high_limit = TASK_SIZE; - addr = vm_unmapped_area(&info); - if (!(addr & ~PAGE_MASK)) - goto success; - VM_BUG_ON(addr != -ENOMEM); - -#if 0 - printk("[area] l=%lx (ENOMEM) f='%s'\n", - len, filp ? filp->f_path.dentry->d_name.name : ""); -#endif - return -ENOMEM; - - success: -#if 0 - printk("[area] l=%lx ad=%lx f='%s'\n", - len, addr, filp ? filp->f_path.dentry->d_name.name : ""); -#endif - return addr; -} /* end arch_get_unmapped_area() */ |