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cc8ccbbfb4
changes from r4341 through r4787 inclusive). That branch is now dead. Please do not commit anything else to it. For the most part the merge was not troublesome. The main areas of uncertainty are: - build system: I had to import by hand Makefile.core-AM_CPPFLAGS.am and include it in a couple of places. Building etc seems to still work, but I haven't tried building the documentation. - syscall wrappers: Following analysis by Greg & Nick, a whole lot of stuff was moved from -generic to -linux after the branch was created. I think that is satisfactorily glued back together now. - Regtests: although this appears to work, no .out files appear, which is strange, and makes it hard to diagnose regtest failures. In particular memcheck/tests/x86/scalar.stderr.exp remains in a conflicted state. - amd64 is broken (slightly), and ppc32 will be unbuildable. I'll attend to the former shortly. git-svn-id: svn://svn.valgrind.org/valgrind/trunk@4789
122 lines
4.6 KiB
C
122 lines
4.6 KiB
C
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/*--------------------------------------------------------------------*/
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/*--- User-mode execve. pub_core_ume.h ---*/
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/*--------------------------------------------------------------------*/
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/*
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This file is part of Valgrind, a dynamic binary instrumentation
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framework.
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Copyright (C) 2000-2005 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 __PUB_CORE_UME_H
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#define __PUB_CORE_UME_H
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//--------------------------------------------------------------------
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// PURPOSE: This module implements user-mode execve, ie. program loading
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// and exec'ing. It is shared between stage1 and stage2.
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//--------------------------------------------------------------------
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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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/* This is only here so it can be shared between stage1 and stage2 */
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/* JRS 9 Aug 05: both of these are apparently unused, except by
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memcheck/tests/vgtest_ume.c. */
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//zz extern
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//zz void VG_(foreach_map)(int (*fn)(char *start, char *end,
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//zz const char *perm, off_t offset,
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//zz int maj, int min, int ino, void* extra),
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//zz void* extra);
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//zz
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//zz /* Jump to 'dst', but first set the stack pointer to 'stack'. Also,
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//zz clear all the integer registers before entering 'dst'. It's
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//zz important that the stack pointer is set to exactly 'stack' and not
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//zz (eg) stack - apparently_harmless_looking_small_offset. Basically
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//zz because the code at 'dst' might be wanting to scan the area above
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//zz 'stack' (viz, the auxv array), and putting spurious words on the
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//zz stack confuses it.
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//zz
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//zz This is only exported so that vgtest_ume.c can use it.
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//zz */
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//zz extern
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//zz __attribute__((noreturn))
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//zz void VG_(jump_and_switch_stacks) ( Addr stack, Addr dst );
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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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char** argv; // IN: the original argv
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Addr exe_base; // INOUT: lowest (allowed) address of exe
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Addr exe_end; // INOUT: highest (allowed) address
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Addr phdr; // OUT: address phdr was mapped at
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int phnum; // OUT: number of phdrs
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Addr interp_base; // OUT: where interpreter (ld.so) was mapped
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Addr entry; // OUT: entrypoint in main executable
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Addr init_eip; // OUT: initial eip
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Addr 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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extern int VG_(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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Word a_type;
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union {
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void *a_ptr;
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Word a_val;
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} u;
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};
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extern struct ume_auxv *VG_(find_auxv)(UWord* orig_esp);
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#endif /* __PUB_CORE_UME_H */
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/*--------------------------------------------------------------------*/
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/*--- end ---*/
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/*--------------------------------------------------------------------*/
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