207 lines
4.2 KiB
C
207 lines
4.2 KiB
C
/* Program execution for Emacs.
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Copyright (C) 2023-2024 Free Software Foundation, Inc.
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This file is part of GNU Emacs.
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GNU Emacs 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 3 of the License, or (at
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your option) any later version.
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GNU Emacs 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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You should have received a copy of the GNU General Public License
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along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>. */
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#ifndef _EXEC_H_
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#define _EXEC_H_
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#ifdef HAVE_STDINT_H
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#include <stdint.h>
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#endif /* HAVE_STDINT_H */
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#include <sys/types.h>
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#include USER_HEADER
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/* Define a replacement for `uint64_t' if it's not present in the C
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library. */
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#ifndef UINT64_MAX
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typedef struct
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{
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uint32_t word1;
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uint32_t word2;
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} xint64_t;
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#else /* UINT64_MAX */
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typedef uint64_t xint64_t;
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#endif /* !UINT64_MAX */
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/* 32-bit ELF headers. */
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struct elf_header_32
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{
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unsigned char e_ident[16];
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uint16_t e_type;
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uint16_t e_machine;
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uint32_t e_version;
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uint32_t e_entry;
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uint32_t e_phoff;
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uint32_t e_shoff;
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uint32_t e_flags;
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uint16_t e_ehsize;
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uint16_t e_phentsize;
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uint16_t e_phnum;
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uint16_t e_shentsize;
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uint16_t e_shnum;
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uint16_t e_shstrndx;
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};
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struct program_header_32
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{
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uint32_t p_type;
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uint32_t p_offset;
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uint32_t p_vaddr;
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uint32_t p_paddr;
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uint32_t p_filesz;
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uint32_t p_memsz;
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uint32_t p_flags;
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uint32_t p_align;
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};
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struct dt_entry_32
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{
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uint32_t d_tag;
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uint32_t d_val;
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};
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struct elf_header_64
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{
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unsigned char e_ident[16];
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uint16_t e_type;
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uint16_t e_machine;
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uint32_t e_version;
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xint64_t e_entry;
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xint64_t e_phoff;
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xint64_t e_shoff;
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uint32_t e_flags;
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uint16_t e_ehsize;
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uint16_t e_phentsize;
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uint16_t e_phnum;
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uint16_t e_shentsize;
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uint16_t e_shnum;
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uint16_t e_shstrndx;
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};
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struct program_header_64
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{
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uint32_t p_type;
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uint32_t p_flags;
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xint64_t p_offset;
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xint64_t p_vaddr;
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xint64_t p_paddr;
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xint64_t p_filesz;
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xint64_t p_memsz;
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xint64_t p_align;
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};
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struct dt_entry_64
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{
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xint64_t d_tag;
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xint64_t d_val;
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};
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/* Define some types to the correct values. */
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#ifdef EXEC_64
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typedef struct elf_header_64 elf_header;
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typedef struct program_header_64 program_header;
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typedef struct dt_entry_64 dt_entry;
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#else /* !EXEC_64 */
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typedef struct elf_header_32 elf_header;
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typedef struct program_header_32 program_header;
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typedef struct dt_entry_32 dt_entry;
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#endif /* EXEC_64 */
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/* Defined in trace.c. */
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/* Structure describing a process being traced. */
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struct exec_tracee
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{
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/* The next process being traced. */
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struct exec_tracee *next;
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/* Address of any stack pointer to restore after system call
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completion. */
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USER_WORD sp;
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/* The thread ID of this process. */
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pid_t pid;
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/* Whether or not the tracee is currently waiting for a system call
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to complete. */
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bool waiting_for_syscall : 1;
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/* Whether or not the tracee has been created but is not yet
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processed by `handle_clone'. */
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bool new_child : 1;
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#ifndef REENTRANT
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/* Name of the executable being run. */
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char *exec_file;
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#endif /* !REENTRANT */
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};
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#ifdef __aarch64__
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extern int aarch64_get_regs (pid_t, USER_REGS_STRUCT *);
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extern int aarch64_set_regs (pid_t, USER_REGS_STRUCT *, bool);
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#endif /* __aarch64__ */
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extern char *format_pid (char *, unsigned int);
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extern USER_WORD user_alloca (struct exec_tracee *, USER_REGS_STRUCT *,
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USER_REGS_STRUCT *, USER_WORD);
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extern int user_copy (struct exec_tracee *, const unsigned char *,
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USER_WORD, USER_WORD);
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extern void exec_init (const char *);
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extern int tracing_execve (const char *, char *const *,
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char *const *);
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extern int after_fork (pid_t);
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extern pid_t exec_waitpid (pid_t, int *, int);
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/* Defined in exec.c. */
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extern char *exec_0 (char *, struct exec_tracee *,
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size_t *, USER_REGS_STRUCT *);
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#endif /* _EXEC_H_ */
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