Archipelago » qemu

configure: Make NPTL non-optional

Now all linux-user targets support building with NPTL, we can make it
mandatory. This is a good idea because: * NPTL is no longer new and experimental; it is completely standard * in practice, linux-user without NPTL is nearly useless for...

linux-user: Allocate the right amount of space for non-fixed file maps

If we let the kernel handle the implementation of mmap_find_vma,
via an anon mmap, we must use the size as indicated by the user
and not the size truncated to the filesize.

This happens often in ld.so, where we initially mmap the file to...

linux-user: resolve reserved_va vma downwards

After consulting with Paul Brook, we concluded that it's best to search
the VMA space downwards, so that we don't even get the chance to conflict
with the brk range.

This patch resolves a bunch of allocation conflicts when using -R....

linux-user: fix compile failure if !CONFIG_USE_GUEST_BASE

If CONFIG_USE_GUEST_BASE is not defined, gcc complains:
linux-user/mmap.c:235: error: comparison of unsigned expression >= 0 is always true

because RESERVED_VA is #defined to 0. Since mmap_find_vma_reserved()...

linux-user: fix types in a comparison

-1ul is unsigned long, which does not necessarily match abi_ulong
type.

Fix by using abi_long instead.

This also avoids a warning with GCC flag -Wtype-limits.

Signed-off-by: Blue Swirl <blauwirbel@gmail.com>

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>

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....

linux-user: Fix mmap_find_vma returning invalid addresses.

Don't return addresses that aren't properly aligned for the guest,
e.g. when the guest has a larger page size than the host. Don't
return addresses that are outside the virtual address space for the...

linux-user/mmap.c: fix warnings with _FORTIFY_SOURCE

CC i386-linux-user/mmap.o
cc1: warnings being treated as errors
/usr/src/RPM/BUILD/qemu-0.11.92/linux-user/mmap.c: In function 'mmap_frag':
/usr/src/RPM/BUILD/qemu-0.11.92/linux-user/mmap.c:253: error: ignoring return value of 'pread', declared with attribute warn_unused_result...

__thread should be before real type

Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>

linux-user: Rewrite mmap_find_vma() to work fine on 64-bit hosts with 32-bit targets

qemu's page table can be incomple if /proc/self/maps is unavailable or
host allocating a memory with mmap(), so we can't use it to find free
memory area.

New version mmap_find_vma() uses mmap() without MAP_FIXED to find free...

Fix most warnings (errors with -Werror) when debugging is enabled

I used the following command to enable debugging:
perl -p -i -e 's/^\/\/#define DEBUG/#define DEBUG/g' * /* *//*

Signed-off-by: Blue Swirl <blauwirbel@gmail.com>

linux-user: initialize mmap_mutex properly

We initialize mmap_mutex in any child threads/processes, but we need to
correctly statically initialize it for the original process.

Signed-off-by: Nathan Froyd <froydnj@codesourcery.com>
Signed-off-by: Riku Voipio <riku.voipio@iki.fi>

Partialy fix mmap at EOF for large pagesize targets in user-mode.

Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6510 c046a42c-6fe2-441c-8c8c-71466251a162

linux-user: add qemu_realloc() implementation to unbreak the build (Gerd Hoffman)

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6412 c046a42c-6fe2-441c-8c8c-71466251a162

Fix mremap, based on patch by Kirill A. Shutemov

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6056 c046a42c-6fe2-441c-8c8c-71466251a162

linux-user: mremap(): handle MREMAP_FIXED and MREMAP_MAYMOVE correctly

Signed-off-by: Kirill A. Shutemov <kirill@shutemov.name>
Acked-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5959 c046a42c-6fe2-441c-8c8c-71466251a162

Include qemu-common.h in order to get prototypes for qemu_malloc etc.

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5402 c046a42c-6fe2-441c-8c8c-71466251a162

Multithreaded locking fixes.

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4692 c046a42c-6fe2-441c-8c8c-71466251a162

Mark host brk() area as reserved.

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4637 c046a42c-6fe2-441c-8c8c-71466251a162

Cope with arch-specific page protection flags in mmap (Richard Purdie).

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4250 c046a42c-6fe2-441c-8c8c-71466251a162

Mark host pages as reserved (Magnus Damm).

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3813 c046a42c-6fe2-441c-8c8c-71466251a162

Fix compiler warnings, by Stefan Weil.

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3507 c046a42c-6fe2-441c-8c8c-71466251a162

Fix mmap to handle differing host/target page sizes, by Edgar E. Iglesias.

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3291 c046a42c-6fe2-441c-8c8c-71466251a162

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

Add _mips_to mmap specialcase.

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2932 c046a42c-6fe2-441c-8c8c-71466251a162

Avoid accessing guest memory directly in usermode emulation.

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1790 c046a42c-6fe2-441c-8c8c-71466251a162

ia64 host support (David Mosberger)

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1360 c046a42c-6fe2-441c-8c8c-71466251a162

amd64 port (Jocelyn Mayer)

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@762 c046a42c-6fe2-441c-8c8c-71466251a162

avoid unaligned file offset in anonymous mapping

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@215 c046a42c-6fe2-441c-8c8c-71466251a162

fixed small page handling

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@160 c046a42c-6fe2-441c-8c8c-71466251a162