Commit Graph

112 Commits

Author SHA1 Message Date
Richard Henderson 60dcbcb5b1 linux-user: Put the stack guard page at the top.
There are no supported stack-grows-up targets.  We were putting
the guard page at the highest address, i.e. the bottom of the stack.
Use the maximum of host and guest page size for the guard size.

Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
2010-07-29 08:32:28 +02:00
Richard Henderson 9058abdd18 linux-user: Improve consistency checking in elf headers.
Validate more fields of the elf header.  Extract those checks
into two common functions to be used in both load_elf_interp
and load_elf_binary.

Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
2010-07-29 08:32:28 +02:00
Richard Henderson 682674b841 linux-user: Load symbols from the interpreter.
First, adjust load_symbols to accept a load_bias parameter.  At the same
time, read the entire section header table in one go, use pread instead
f lseek+read for the symbol and string tables, and properly free
allocated structures on error exit paths.

Second, adjust load_elf_interp to compute load_bias.  This requires
finding out the built-in load addresses.  Which allows us to honor a
pre-linked interpreter image when possible, and eliminate the hard-coded
INTERP_MAP_SIZE value.

Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
2010-07-29 08:32:28 +02:00
Richard Henderson 991f8f0c91 linux-user: Clean up byte-swapping in elfload.c.
Remove ifdefs from code by defining empty inline functions
when byte swapping isn't needed.  Push loops over swapping
arrays of structures into the swapping functions.

Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
2010-07-29 08:32:28 +02:00
Richard Henderson 2849023112 linux-user: Define ELF_DATA generically.
The only consideration on this value is the target endianness.
The existing defines were incorrect for alpha and sh4eb.

Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
2010-07-29 08:32:28 +02:00
Richard Henderson 9955ffac9a linux-user: Reduce lseek+reads while loading elf files.
Define BPRM_BUF_SIZE to 1k and read that amount initially.  If the
data we want from the binary is in this buffer, use it instead of
reading from the file again.

Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
2010-07-29 08:32:28 +02:00
Richard Henderson d97ef72eed linux-user: Reindent elfload.c.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
2010-07-29 08:32:27 +02:00
Richard Henderson e167d46c7a Add more DT_* and AT_* constants to qemu's copy of elf.h.
Moving some PPC AT_* constants from elfload.c at the same time.

Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
2010-07-29 08:32:27 +02:00
Richard Henderson cf129f3a8e linux-user: Handle filesz < memsz for any PT_LOAD segment.
I caught padzero not properly initializing the .bss segment
on a statically linked Alpha program.  Rather than a minimal
patch, replace the gross code with a single mmap+memset.

Share more code between load_elf_interp and load_elf_binary.

Legally, an ELF program need not have just a single .bss;
and PT_LOAD segment can have memsz > filesz.

Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
2010-07-29 08:32:27 +02:00
Paul Brook 97374d3858 Usermode exec-stack fix
When loading a shared library that requires an executable stack,
glibc uses the mprotext PROT_GROWSDOWN flag to achieve this.
We don't support PROT_GROWSDOWN.
Add a special case to handle changing the stack permissions in this way.

Signed-off-by: Paul Brook <paul@codesourcery.com>
2010-06-16 13:03:51 +01:00
Paul Brook 68a1c81686 Pre-allocate guest address space
Allow pre-allocation of the guest virtual address space in usermode emulation.

Signed-off-by: Paul Brook <paul@codesourcery.com>
2010-05-29 02:27:35 +01:00
Edgar E. Iglesias 0d5d469938 microblaze: Update elf machine nums.
189 was allocated in upstream binutils.

0xbaab was the old temporary value. Still used by some tools and the
linux kernel.

I've seen 115 in older gdb versions, but lets ignore that one.

Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
2010-05-19 15:24:17 +02:00
Edgar E. Iglesias e4cbd44d8e microblaze: Add linux-user core dumping support.
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
2010-05-19 15:09:28 +02:00
Paul Brook c581deda32 Better default guest_base
Avoid loading linux-user applications in address space already used/reserved
by the host.

Signed-off-by: Paul Brook <paul@codesourcery.com>
2010-05-05 16:32:59 +01:00
Paul Brook 2e9a5713f0 Remove PAGE_RESERVED
The usermode PAGE_RESERVED code is not required by the current mmap
implementation, and is already broken when guest_base != 0.
Unfortunately the bsd emulation still uses the old mmap implementation,
so we can't rip it out altogether.

Signed-off-by: Paul Brook <paul@codesourcery.com>
2010-05-05 16:32:59 +01:00
Rob Landley 7983f435e5 linux-user/ppc: use the Linux register layout
The dynamic linker converts the Linux layout to the AIX layout and is
reentrant so it won't do it a second time if it's already been
converted. In short it work just fine with either register layout.

OTOH, statically linked binaries expect a Linux layout.

Remove code converting the Linux layout to AIX layout so that all
binaries are presented the Linux Layout.

Signed-off-by: Rob Landley <rob@landley.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-03-28 16:52:27 +02:00
Richard Henderson 703e0e89c6 linux-user: Use RLIMIT_STACK for default stack size.
The current default stack limit of 512kB is far too small; a fair
number of gcc testsuite failures (for all guests) are directly
attributable to this.  Using the -s option in every invocation of
the emulator is annoying to say the least.

A reasonable compromise seems to be to honor the system rlimit.
At least on two Linux distributions, this is set to 8MB and 10MB
respectively.  If the system does not limit the stack, then we're
no worse off than before.

At the same time, rename the variable from x86_stack_size and
change the ultimate fallback size from 512kB to 8MB.

Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-03-27 14:16:51 +01:00
Paul Brook b480d9b74d Fix usermode virtual address type
Usermode virtual addresses are abi_ulong, not target_ulong.

Signed-off-by: Paul Brook <paul@codesourcery.com>
2010-03-12 23:25:52 +00:00
Paul Brook 9f9f030928 Disassembler symbol lookup fix
Fix function signature for userspace disassembler symbol lookup.

Signed-off-by: Paul Brook <paul@codesourcery.com>
2010-03-01 04:39:50 +00:00
Mike Frysinger 0ddbc96ec1 fix linux-user microblaze ELF_ARCH definition
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
2010-01-17 09:51:03 +01:00
Nathan Froyd 7631c97ec9 linux-user: add core dump support for SH
Signed-off-by: Nathan Froyd <froydnj@codesourcery.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2009-12-19 20:29:18 +01:00
Nathan Froyd 7a93cc55e9 linux-user: add core dump support for M68K
Signed-off-by: Nathan Froyd <froydnj@codesourcery.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2009-12-19 20:29:18 +01:00
Nathan Froyd 51e526063d linux-user: add core dump support for MIPS
Signed-off-by: Nathan Froyd <froydnj@codesourcery.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2009-12-19 20:29:18 +01:00
Nathan Froyd e2f3e741b4 linux-user: add core dump support for PPC
Signed-off-by: Nathan Froyd <froydnj@codesourcery.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2009-12-19 20:29:18 +01:00
Nathan Froyd d049e626ad linux-user: fix ARM core dumps on opposite-endian hosts
Signed-off-by: Nathan Froyd <froydnj@codesourcery.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2009-12-19 20:29:18 +01:00
Nathan Froyd 21e807fadb linux-user: commonify definitions of target typedefs
There's no sense in separately declaring target_{elf_greg,uid,gid,pid}_t
for every architecture.  Just declare them once with appropriate
USE_UID16 handling.

Signed-off-by: Nathan Froyd <froydnj@codesourcery.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2009-12-19 20:29:18 +01:00
Nathan Froyd dd0a365144 linux-user: fix ELF_USE_CORE_DUMP/USE_ELF_CORE_DUMP confusion
Signed-off-by: Nathan Froyd <froydnj@codesourcery.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2009-12-19 20:29:18 +01:00
Aurelien Jarno 49995e1748 linux-user: use TARGET_ABI_FMT_lx to print abi_ulong types
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2009-12-19 20:29:18 +01:00
Richard Henderson 8a57a6c740 target-alpha: Drop bogus UNIQ initial value on Linux.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2009-12-13 20:32:36 +01:00
Riku Voipio cf6de34aec linux-user: Update ARM hwcaps
Update ARM hwcaps to match Linux kernel 2.6.31 state

Signed-off-by: Riku Voipio <riku.voipio@iki.fi>
2009-10-16 14:37:33 +03:00
Paul Bolle 3bc0bdcaad linux-user: fix "#if 0"'d printf()
Make an "#if 0"'d printf() in load_elf_binary(), probably left to aid in
debugging, reflect what the actual code does. The current printf() will
only confuse those who "#if 1" it (it certainly confused me enough to
write this trivial patch).

Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2009-10-04 13:24:45 +02:00
Anthony Liguori c227f0995e Revert "Get rid of _t suffix"
In the very least, a change like this requires discussion on the list.

The naming convention is goofy and it causes a massive merge problem.  Something
like this _must_ be presented on the list first so people can provide input
and cope with it.

This reverts commit 99a0949b72.

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-01 16:12:16 -05:00
malc 99a0949b72 Get rid of _t suffix
Some not so obvious bits, slirp and Xen were left alone for the time
being.

Signed-off-by: malc <av1474@comtv.ru>
2009-10-01 22:45:02 +04:00
Michael S. Tsirkin 6ece4df63b elfload: fix coding style nit
Put space between = and * when dereferencing a pointer,
to avoid confusion with old-style "*="

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2009-09-30 18:45:50 +00:00
Blue Swirl ca20cf32ab Compile loader only once
Callers must pass ELF machine, byte swapping and symbol LSB clearing
information to ELF loader. A.out loader needs page size information, pass
that too as a parameter.

Extract prototypes to a separate file. Move loader.[ch] and elf_ops.h under hw.

Adjust callers. Also use target_phys_addr_t instead of target_ulong for
addresses: loader addresses aren't virtual.

Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2009-09-20 14:58:02 +00:00
Blue Swirl 72cf2d4f0e Fix sys-queue.h conflict for good
Problem: Our file sys-queue.h is a copy of the BSD file, but there are
some additions and it's not entirely compatible. Because of that, there have
been conflicts with system headers on BSD systems. Some hacks have been
introduced in the commits 15cc923584,
f40d753718,
96555a96d7 and
3990d09adf but the fixes were fragile.

Solution: Avoid the conflict entirely by renaming the functions and the
file. Revert the previous hacks.

Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2009-09-12 07:36:22 +00:00
Laurent Desnogues ec822001a2 Fix symfind.
this patch fixes an issue in symfind.

Assume you have the following symbols:

Address  Size
0045bca0 00000080 T s0
0045bd20 00000112 T s1

You'll notice that s1 is s0 + size.

So the current symfind will find that address 0045bd20 belongs to s0
instead of s1.

Laurent

Signed-off-by: Laurent Desnogues <laurent.desnogues@gmail.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Message-Id:
2009-08-10 13:05:25 -05:00
Blue Swirl 7cba04f6de More NULL pointer fixes
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2009-08-01 10:13:20 +00:00
malc 9fdca5aa5d Use correct byteswap routine for elf_note
All elf64_note structure members are Elf64_Word (which is 32bit value)
hence using bswaptls to byteswap it on 64bit platforms is incorrect.

Signed-off-by: malc <av1474@comtv.ru>
2009-07-18 13:17:01 +04:00
malc 3efa9a672e Avoid name clashes with symbols that leak from system headers
Signed-off-by: malc <av1474@comtv.ru>
2009-07-18 13:16:51 +04:00
Laurent Desnogues a2547a1378 ELF codedump build failures
Rename ELF coredump types to avoid conflict with the corresponding host types.

Signed-off-by: Laurent Desnogues <laurent.desnogues@gmail.com>
2009-07-17 13:33:41 +01:00
Paul Brook 379f6698d7 Userspace guest address offsetting
Re-implement GUEST_BASE support.
Offset guest ddress space by default if the guest binary contains
regions below the host mmap_min_addr.
Implement support for i386, x86-64 and arm hosts.

Signed-off-by: Riku Voipio <riku.voipio@iki.fi>
Signed-off-by: Paul Brook <paul@codesourcery.com>
2009-07-17 13:12:41 +01:00
Mika Westerberg 9edc5d7966 linux-user: added x86 and x86_64 support for ELF coredump
Signed-off-by: Mika Westerberg <mika.westerberg@iki.fi>
Signed-off-by: Riku Voipio <riku.voipio@iki.fi>
2009-06-16 16:56:28 +03:00
Mika Westerberg edf8e2af14 linux-user: implemented ELF coredump support for ARM target
When target process is killed with signal (such signal that
should dump core) a coredump file is created.  This file is
similar than coredump generated by Linux (there are few exceptions
though).

Riku Voipio: added support for rlimit

Signed-off-by: Mika Westerberg <mika.westerberg@iki.fi>
Signed-off-by: Riku Voipio <riku.voipio@iki.fi>
2009-06-16 16:56:28 +03:00
Edgar E. Iglesias b779e29ed8 microblaze: linux-user support.
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
2009-05-26 21:10:28 +02:00
Nathan Froyd df84e4f345 support ELF_HWCAP for PPPC
Signed-off-by: Nathan Froyd <froydnj@codesourcery.com>
Signed-off-by: malc <av1474@comtv.ru>
2009-05-16 01:36:16 +04:00
aliguori 93fcfe39a0 Convert references to logfile/loglevel to use qemu_log*() macros
This is a large patch that changes all occurrences of logfile/loglevel
global variables to use the new qemu_log*() macros.

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>



git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6338 c046a42c-6fe2-441c-8c8c-71466251a162
2009-01-15 22:34:14 +00:00
malc e58ffeb322 Remove all traces of __powerpc__
According to $GCC/gcc/config/rs6000/rs6000-c.c _ARCH_PPC is the
ubiquitous define which should be used to test whether gcc targets
PowerPC, on 64bit platforms _ARCH_PPC64 will be also defined.

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6301 c046a42c-6fe2-441c-8c8c-71466251a162
2009-01-14 18:39:49 +00:00
pbrook 49918a752b * Use function pointers for symbol lookup (currently for elf32 and elf64,
could be expanded).  This also fixes the bug with mips elf64 symbols
  in current Qemu trunk.

* Use quicksort and binary search for symbol lookup.

* Remove unneeded entries from symbol table.  This reduced a typical table
  size (linux mips kernel) from 1764487 to 11656 entries.

Signed-off-by: Stefan Weil <weil@mail.berlios.de> 



git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5510 c046a42c-6fe2-441c-8c8c-71466251a162
2008-10-22 15:11:31 +00:00
blueswir1 440c7e85cc Export x86_stack_size in qemu.h
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5427 c046a42c-6fe2-441c-8c8c-71466251a162
2008-10-05 11:05:14 +00:00