Denis Drakhnia
8d28806a5d
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70 lines
2.7 KiB
C
70 lines
2.7 KiB
C
/*
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* user-mmap.h: prototypes for linux-user guest binary loader
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef LINUX_USER_USER_MMAP_H
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#define LINUX_USER_USER_MMAP_H
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/*
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* Guest parameters for the ADDR_COMPAT_LAYOUT personality
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* (at present this is the only layout supported by QEMU).
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*
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* TASK_UNMAPPED_BASE: For mmap without hint (addr != 0), the search
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* for unused virtual memory begins at TASK_UNMAPPED_BASE.
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*
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* ELF_ET_DYN_BASE: When the executable is ET_DYN (i.e. PIE), and requires
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* an interpreter (i.e. not -static-pie), use ELF_ET_DYN_BASE instead of
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* TASK_UNMAPPED_BASE for selecting the address of the executable.
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* This provides some distance between the executable and the interpreter,
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* which allows the initial brk to be placed immediately after the
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* executable and also have room to grow.
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*
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* task_unmapped_base, elf_et_dyn_base: When the guest address space is
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* limited via -R, the values of TASK_UNMAPPED_BASE and ELF_ET_DYN_BASE
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* must be adjusted to fit.
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*/
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extern abi_ulong task_unmapped_base;
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extern abi_ulong elf_et_dyn_base;
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/*
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* mmap_next_start: The base address for the next mmap without hint,
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* increased after each successful map, starting at task_unmapped_base.
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* This is an optimization within QEMU and not part of ADDR_COMPAT_LAYOUT.
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*/
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extern abi_ulong mmap_next_start;
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int target_mprotect(abi_ulong start, abi_ulong len, int prot);
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abi_long target_mmap(abi_ulong start, abi_ulong len, int prot,
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int flags, int fd, off_t offset);
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int target_munmap(abi_ulong start, abi_ulong len);
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abi_long target_mremap(abi_ulong old_addr, abi_ulong old_size,
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abi_ulong new_size, unsigned long flags,
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abi_ulong new_addr);
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abi_long target_madvise(abi_ulong start, abi_ulong len_in, int advice);
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abi_ulong mmap_find_vma(abi_ulong, abi_ulong, abi_ulong);
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void mmap_fork_start(void);
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void mmap_fork_end(int child);
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#ifdef TARGET_E2K
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abi_ulong e2k_mmap(abi_ulong size);
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#endif
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abi_ulong target_shmat(CPUArchState *cpu_env, int shmid,
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abi_ulong shmaddr, int shmflg);
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abi_long target_shmdt(abi_ulong shmaddr);
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#endif /* LINUX_USER_USER_MMAP_H */
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