mirror of
https://github.com/Zenithsiz/ftmemsim-valgrind.git
synced 2026-02-09 05:10:23 +00:00
493933b1c6
of using an assembly hack to find the stack pointer at startup, we find it from argv. It's much simpler, avoids linking games, is platform independent, and works on PPC. git-svn-id: svn://svn.valgrind.org/valgrind/trunk@2782
118 lines
4.1 KiB
C
118 lines
4.1 KiB
C
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/*--------------------------------------------------------------------*/
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/*--- A header file used by both stage1 and stage2. ---*/
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/*--- ume.h ---*/
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/*--------------------------------------------------------------------*/
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/*
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This file is part of Valgrind, an extensible x86 protected-mode
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emulator for monitoring program execution on x86-Unixes.
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Copyright (C) 2000-2004 Julian Seward
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jseward@acm.org
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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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 this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307, USA.
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The GNU General Public License is contained in the file COPYING.
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*/
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#ifndef _COREGRIND_UME_H
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#define _COREGRIND_UME_H
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#include <elf.h>
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#include <sys/types.h>
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/*------------------------------------------------------------*/
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/*--- General stuff ---*/
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/*------------------------------------------------------------*/
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void foreach_map(int (*fn)(char *start, char *end,
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const char *perm, off_t offset,
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int maj, int min, int ino, void* extra),
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void* extra);
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#if ELFSZ == 64
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#define ESZ(x) Elf64_##x
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#elif ELFSZ == 32
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#define ESZ(x) Elf32_##x
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#else
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#error ELFSZ needs to ==32 or ==64
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#endif
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/* Integer type the same size as a pointer */
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typedef ESZ(Addr) addr_t;
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// Jump to a new 'ip' with the stack 'sp'.
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void jmp_with_stack(addr_t ip, addr_t sp) __attribute__((noreturn));
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/*------------------------------------------------------------*/
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/*--- Loading ELF files ---*/
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/*------------------------------------------------------------*/
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// Info needed to load and run a program. IN/INOUT/OUT refers to the
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// inputs/outputs of do_exec().
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struct exeinfo
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{
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addr_t map_base; // IN: if non-zero, base address of mappings
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char** argv; // IN: the original argv
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addr_t exe_base; // INOUT: lowest (allowed) address of exe
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addr_t exe_end; // INOUT: highest (allowed) address
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addr_t phdr; // OUT: address phdr was mapped at
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int phnum; // OUT: number of phdrs
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addr_t interp_base; // OUT: where interpreter (ld.so) was mapped
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addr_t entry; // OUT: entrypoint in main executable
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addr_t init_eip; // OUT: initial eip
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addr_t brkbase; // OUT: base address of brk segment
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// These are the extra args added by #! scripts
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char* interp_name; // OUT: the interpreter name
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char* interp_args; // OUT: the args for the interpreter
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};
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// Does everything short of actually running 'exe': finds the file,
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// checks execute permissions, sets up interpreter if program is a script,
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// reads headers, maps file into memory, and returns important info about
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// the program.
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int do_exec(const char *exe, struct exeinfo *info);
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/*------------------------------------------------------------*/
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/*--- Finding and dealing with auxv ---*/
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/*------------------------------------------------------------*/
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struct ume_auxv
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{
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int a_type;
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union {
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void *a_ptr;
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int a_val;
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void (*a_fcn)(void);
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} u;
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};
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struct ume_auxv *find_auxv(int *orig_esp);
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/* Our private auxv entries */
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#define AT_UME_PADFD 0xff01 /* padding file fd */
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#define AT_UME_EXECFD 0xff02 /* stage1 executable fd */
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#endif /* _COREGRIND_UME_H */
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/*--------------------------------------------------------------------*/
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/*--- end ume.h ---*/
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/*--------------------------------------------------------------------*/
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