mirror of https://gitee.com/openkylin/qemu.git
111 lines
3.5 KiB
C
111 lines
3.5 KiB
C
/*
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* loader.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_LOADER_H
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#define LINUX_USER_LOADER_H
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typedef struct {
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const void *cache;
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unsigned int cache_size;
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int fd;
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} ImageSource;
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/**
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* imgsrc_read: Read from ImageSource
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* @dst: destination for read
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* @offset: offset within file for read
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* @len: size of the read
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* @img: ImageSource to read from
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* @errp: Error details.
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*
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* Read into @dst, using the cache when possible.
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*/
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bool imgsrc_read(void *dst, off_t offset, size_t len,
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const ImageSource *img, Error **errp);
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/**
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* imgsrc_read_alloc: Read from ImageSource
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* @offset: offset within file for read
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* @size: size of the read
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* @img: ImageSource to read from
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* @errp: Error details.
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*
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* Read into newly allocated memory, using the cache when possible.
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*/
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void *imgsrc_read_alloc(off_t offset, size_t len,
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const ImageSource *img, Error **errp);
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/**
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* imgsrc_mmap: Map from ImageSource
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*
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* If @src has a file descriptor, pass on to target_mmap. Otherwise,
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* this is "mapping" from a host buffer, which resolves to memcpy.
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* Therefore, flags must be MAP_PRIVATE | MAP_FIXED; the argument is
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* retained for clarity.
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*/
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abi_long imgsrc_mmap(abi_ulong start, abi_ulong len, int prot,
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int flags, const ImageSource *src, abi_ulong offset);
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/*
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* Read a good amount of data initially, to hopefully get all the
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* program headers loaded.
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*/
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#define BPRM_BUF_SIZE 1024
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/*
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* This structure is used to hold the arguments that are
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* used when loading binaries.
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*/
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struct linux_binprm {
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char buf[BPRM_BUF_SIZE] __attribute__((aligned));
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ImageSource src;
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abi_ulong p;
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int e_uid, e_gid;
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int argc, envc;
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char **argv;
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char **envp;
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char *filename; /* Name of binary */
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int (*core_dump)(int, const CPUArchState *); /* coredump routine */
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};
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void do_init_thread(struct target_pt_regs *regs, struct image_info *infop);
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abi_ulong loader_build_argptr(int envc, int argc, abi_ulong sp,
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abi_ulong stringp, int push_ptr);
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int loader_exec(int fdexec, const char *filename, char **argv, char **envp,
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struct target_pt_regs *regs, struct image_info *infop,
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struct linux_binprm *);
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uint32_t get_elf_eflags(int fd);
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int load_elf_binary(struct linux_binprm *bprm, struct image_info *info);
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int load_flt_binary(struct linux_binprm *bprm, struct image_info *info);
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abi_long memcpy_to_target(abi_ulong dest, const void *src,
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unsigned long len);
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extern unsigned long guest_stack_size;
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#if defined(TARGET_S390X) || defined(TARGET_AARCH64) || defined(TARGET_ARM)
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uint32_t get_elf_hwcap(void);
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const char *elf_hwcap_str(uint32_t bit);
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#endif
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#if defined(TARGET_AARCH64) || defined(TARGET_ARM)
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uint64_t get_elf_hwcap2(void);
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const char *elf_hwcap2_str(uint32_t bit);
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#endif
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#endif /* LINUX_USER_LOADER_H */
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