Commit Graph

18 Commits

Author SHA1 Message Date
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 660f11be54 Fix Sparse warnings: "Using plain integer as NULL pointer"
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2009-07-31 21:16:51 +00:00
Paul Brook fd93a79999 Fix elf loader range checking
The ELF loader tracks the range of addresses used by a binary.
However this incorrectly assumes zero is not a valid address.

Signed-off-by: Paul Brook <paul@codesourcery.com>
2009-06-05 15:16:41 +01:00
blueswir1 7f70c93716 Make the ELF loader aware of backwards compatibility
Most 64 bit architectures I'm aware of support running 32 bit code
of the same architecture as well.

So x86_64 can run i386 code easily and ppc64 can run ppc code.

Unfortunately, the current checks are pretty strict. So you can only
load e.g. an x86_64 elf binary on qemu-system-x86_64, but no i386 one.

This can get really annoying. I first encountered this issue with
my multiboot patch, where qemu-system-x86_64 was unable to load an
i386 elf binary because the elf loader rejected it.

The same thing happened again on PPC64 now. The firmware we're loading
is a PPC32 elf binary, as it's shared with PPC32. But the platform is
PPC64.

Right now there is a hack for this in the ppc cpu.h definition, that
simply sets the type to PPC32 in system emulation mode. While that
works fine for the firmware, it's no good if you also want to load a
PPC64 kernel with -kernel.

So in order to solve this mess, I figured the easiest way is to make
the elf loader aware of platforms that are backwards compatible. For
now I was only sure that x86_64 does i386 and ppc64 does ppc32, but
maybe there are other combinations too.

This patch is a prerequisite for having a working -kernel option on
PPC64.

Signed-off-by: Alexander Graf <alex@csgraf.de>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6855 c046a42c-6fe2-441c-8c8c-71466251a162
2009-03-13 21:16:24 +00:00
pbrook 83c1f87cc8 Use load address when loading ELF images.
Signed-off-by: Paul Brook <paul@codesourcery.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5513 c046a42c-6fe2-441c-8c8c-71466251a162
2008-10-22 18:20:20 +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
pbrook 9596ebb701 Add statics and missing #includes for prototypes.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3683 c046a42c-6fe2-441c-8c8c-71466251a162
2007-11-18 01:44:38 +00:00
ths 8279006411 Cast ELF datatypes properly to host 64bit types.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3407 c046a42c-6fe2-441c-8c8c-71466251a162
2007-10-17 23:07:31 +00:00
blueswir1 eb296a0a03 Remove the target dependency introduced by previous patch
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3239 c046a42c-6fe2-441c-8c8c-71466251a162
2007-09-25 17:30:09 +00:00
blueswir1 9437454a84 Fix loading above 4G
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3230 c046a42c-6fe2-441c-8c8c-71466251a162
2007-09-24 18:41:27 +00:00
ths 3b46e62427 find -type f | xargs sed -i 's/[\t ]*$//g' # Yes, again. Note the star in the regex.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3177 c046a42c-6fe2-441c-8c8c-71466251a162
2007-09-17 08:09:54 +00:00
ths 5fafdf24ef find -type f | xargs sed -i 's/[\t ]$//g' # on most files
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3173 c046a42c-6fe2-441c-8c8c-71466251a162
2007-09-16 21:08:06 +00:00
ths 74287114c9 Improved initrd support for mips.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2574 c046a42c-6fe2-441c-8c8c-71466251a162
2007-04-01 17:56:37 +00:00
ths 04d4b0c33f Simplify error handling again.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2275 c046a42c-6fe2-441c-8c8c-71466251a162
2006-12-23 15:18:47 +00:00
ths 9042c0e20d Check ELF binaries for machine type and endianness.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2274 c046a42c-6fe2-441c-8c8c-71466251a162
2006-12-23 14:18:40 +00:00
bellard 3aee288bc8 fixed memory leak
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1890 c046a42c-6fe2-441c-8c8c-71466251a162
2006-05-02 20:54:12 +00:00
bellard 9ee3c02942 added entry parameter to ELF loader
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1859 c046a42c-6fe2-441c-8c8c-71466251a162
2006-04-26 22:05:26 +00:00
bellard 5fe141fd30 generic ELF loader
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1831 c046a42c-6fe2-441c-8c8c-71466251a162
2006-04-23 17:12:42 +00:00