Commit Graph

331 Commits

Author SHA1 Message Date
Luke Shumaker
7ad75eea86 linux-user: init_guest_space: Clean up control flow a bit
Instead of doing

        if (check1) {
            if (check2) {
               success;
            }
        }

        retry;

Do a clearer

        if (!check1) {
           goto try_again;
        }

        if (!check2) {
           goto try_again;
        }

        success;

    try_again:
        retry;

Besides being clearer, this makes it easier to insert more checks that
need to trigger a retry on check failure, or rearrange them, or anything
like that.

Because some indentation is changing, "ignore space change" may be useful
for viewing this patch.

Signed-off-by: Luke Shumaker <lukeshu@parabola.nu>
Message-Id: <20171228180814.9749-8-lukeshu@lukeshu.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
[lv: modified to try again fi valid == 0, not valid == -1 (error case)]
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2018-03-13 15:01:14 +01:00
Luke Shumaker
955e304f6f linux-user: init_guest_commpage: Add a comment about size check
Signed-off-by: Luke Shumaker <lukeshu@parabola.nu>
Message-Id: <20171228180814.9749-7-lukeshu@lukeshu.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2018-03-09 21:29:49 +01:00
Luke Shumaker
293f206008 linux-user: init_guest_space: Clarify page alignment logic
There are 3 parts to this change:
 - Add a comment showing the relative sizes and positions of the blocks of
   memory
 - introduce and use new aligned_{start,size} instead of adjusting
   real_{start_size}
 - When we clean up (on failure), munmap(real_start, real_size) instead of
   munmap(aligned_start, aligned_size).  It *shouldn't* make any
   difference, but I will admit that this does mean we are making the
   syscall with different values, so this isn't quite a no-op patch.

Signed-off-by: Luke Shumaker <lukeshu@parabola.nu>
Message-Id: <20171228180814.9749-6-lukeshu@lukeshu.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2018-03-09 21:29:24 +01:00
Luke Shumaker
e7ea02e62a linux-user: init_guest_space: Correctly handle guest_start in commpage initialization
init_guest_commpage  needs to check if the mapped space, which ends at
real_start+real_size overlaps with where it needs to put the commpage,
which is (assuming sane qemu_host_page_size) guest_base + 0xffff000, where
guest_base is real_start - guest_start.

    [guest_base][       0xffff0000      ][commpage]
    [guest_base][guest_start][real_size] [commpage]
    [       real_start      ][real_size] [commpage]
                                        ^
                                 fail if this gap < 0

Since init_guest_commpage wants to do everything relative to guest_base
(rather than real_start), it obviously needs to be comparing 0xffff0000
against guest_start+real_size, not just real_size.

This bug has been present since 806d102141 in
2012, but guest_start is usually 0, and prior to v2.11 real_size was
usually much smaller than 0xffff0000, so it was uncommon for it to have
made a difference.

Signed-off-by: Luke Shumaker <lukeshu@parabola.nu>
Message-Id: <20171228180814.9749-5-lukeshu@lukeshu.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2018-03-09 21:25:32 +01:00
Luke Shumaker
f202481754 linux-user: init_guest_space: Clean up if we can't initialize the commpage
We'll just exit with an error anyway, so it doesn't really matter, but it
is cleaned up in all of the other places were we error out.

Signed-off-by: Luke Shumaker <lukeshu@parabola.nu>
Message-Id: <20171228180814.9749-4-lukeshu@lukeshu.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2018-03-09 21:24:22 +01:00
Luke Shumaker
c3637eaf61 linux-user: Rename validate_guest_space => init_guest_commpage
init_guest_commpage is a much more honest description of what the function
does.  validate_guest_space not only suggests that the function has no
side-effects, but also introduces confusion as to why it is only needed on
32-bit ARM targets.

Signed-off-by: Luke Shumaker <lukeshu@parabola.nu>
Message-Id: <20171228180814.9749-3-lukeshu@lukeshu.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2018-03-09 21:23:03 +01:00
Luke Shumaker
8756e1361d linux-user: Use #if to only call validate_guest_space for 32-bit ARM target
Instead of defining a bogus validate_guest_space that always returns 1 on
targets other than 32-bit ARM, use #if blocks to only call it on 32-bit ARM
targets.  This makes the "normal" flow control clearer.

Signed-off-by: Luke Shumaker <lukeshu@parabola.nu>
Message-Id: <20171228180814.9749-2-lukeshu@lukeshu.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
[lv: fix condition to "!= 1" as requested by Peter]
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2018-03-09 21:19:03 +01:00
Peter Maydell
daa4374a04 linux-user: Drop unicore32 code
We dropped the unicore32-linux-user target in commit 5e2b40f727
in 2016. Nobody has made any attempt to fix the issues that
caused us to drop it, so remove the associated code.
(The system emulation parts of unicore32 remain.)

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20180308144733.25615-2-peter.maydell@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2018-03-09 19:17:27 +01:00
Michael Clark
47ae93cdfe
RISC-V Linux User Emulation
Implementation of linux user emulation for RISC-V.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Sagar Karandikar <sagark@eecs.berkeley.edu>
Signed-off-by: Michael Clark <mjc@sifive.com>
2018-03-07 08:30:28 +13:00
Richard Henderson
0438f0372a target/arm: Add ARM_FEATURE_V8_FCMA
Not enabled anywhere yet.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20180228193125.20577-11-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-03-02 11:03:45 +00:00
Richard Henderson
1dc81c1541 target/arm: Add ARM_FEATURE_V8_RDM
Not enabled anywhere yet.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20180228193125.20577-2-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-03-02 11:03:45 +00:00
Peter Maydell
201b19d5ce linux-user: Report AArch64 FP16 support via hwcap bits
Set the appropriate Linux hwcap bits to tell the guest binary if we
have implemented half-precision floating point support.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2018-03-01 11:13:59 +00:00
YunQiang Su
768fe76e92 linux-user: introduce functions to detect CPU type
Add a function to return ELF e_flags and use it
to select the CPU model.

Signed-off-by: YunQiang Su <syq@debian.org>
[lv: split the patch and some cleanup in get_elf_eflags()]
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20180220173307.25125-3-laurent@vivier.eu>
2018-02-25 17:28:49 +01:00
Ard Biesheuvel
955f56d44a target/arm: enable user-mode SHA-3, SM3, SM4 and SHA-512 instruction support
Add support for the new ARMv8.2 SHA-3, SM3, SM4 and SHA-512 instructions to
AArch64 user mode emulation.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Message-id: 20180207111729.15737-6-ard.biesheuvel@linaro.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-02-09 10:40:29 +00:00
Marco A L Barbosa
444cd5c3ae linux-user: Add AT_SECURE auxval
Signed-off-by: Marco A L Barbosa <malbarbo@gmail.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20180111183714.22834-2-malbarbo@gmail.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2018-01-23 14:20:52 +01:00
Peter Maydell
f516511ea8 linux-user: Fix calculation of auxv length
In commit 7c4ee5bcc8 we changed the order in which we construct
the AUXV, but forgot to adjust the calculation of the length. The
result is that we set info->auxv_len to a bogus and negative value,
and then later on the code in open_self_auxv() gets confused and
ends up presenting the guest with an empty file.

Since we now have to calculate the auxv length up-front as part
of figuring out how much we're going to put on the stack, set
info->auxv_len then; this allows us to assert that we put the
same number of entries into auxv as we pre-calculated, rather
than merely having a comment saying we need to do that.

Fixes: https://bugs.launchpad.net/qemu/+bug/1728116

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2017-11-20 16:15:41 +02:00
Peter Maydell
e568f9df08 linux-user: Allow -R values up to 0xffff0000 for 32-bit ARM guests
The 32-bit ARM validate_guest_space() check tests whether the
specified -R value leaves enough space for us to put the
commpage in at 0xffff0f00. However it was incorrectly doing
a <= check for the check against (guest_base + guest_size),
which meant that it wasn't permitting the guest space to
butt right up against the commpage.

Fix the comparison, so that -R values all the way up to 0xffff0000
work correctly.

Reviewed-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2017-10-16 16:00:56 +03:00
Philippe Mathieu-Daudé
72cd500b72 linux-user/sh4: fix incorrect memory write
not hit since 2009! :)

linux-user/elfload.c:1102:20: warning: Out of bound memory access (access exceeds upper limit of memory block)
        (*regs[i]) = tswap32(env->gregs[i]);
        ~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~

Reported-by: Clang Static Analyzer
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2017-07-31 13:06:39 +03:00
Peter Maydell
82991bed73 linux-user: Put PPC AT_IGNOREPPC auxv entries in the right place
The 32-bit PPC auxv is a bit complicated because in the
mists of time it used to be 16-aligned rather than directly
after the environment. Older glibc versions had code to
try to probe for whether it needed alignment or not:
https://sourceware.org/git/?p=glibc.git;a=blob;f=sysdeps/unix/sysv/linux/powerpc/dl-sysdep.c;hb=e84eabb3871c9b39e59323bf3f6b98c2ca9d1cd0
and the kernel has code which puts some magic entries at
the bottom to ensure that the alignment probe fails:
http://elixir.free-electrons.com/linux/latest/source/arch/powerpc/include/asm/elf.h#L158

QEMU has similar code too, but it was broken by commit
7c4ee5bcc8, which changed elfload.c from filling in
the auxv starting at the highest address and working down
to starting at the lowest address and working up. This
means that the ARCH_DLINFO hook must now be invoked first
rather than last, and the entries in it for PPC must
be reversed so that the magic AT_IGNOREPPC entries come
at the lowest address in the auxv as they should.

The effect of this was that if running a guest binary that
used an old glibc with the alignment probing the guest ld.so
code would segfault if the size of the guest environment and
argv happened to put the auxv at an address that triggered
the alignment code in the guest glibc.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Tested-by: Richard Henderson <rth@twiddle.net>
Message-id: 1498582198-6649-1-git-send-email-peter.maydell@linaro.org
2017-06-29 10:25:26 +01:00
Stafford Horne
d89e71e873 target/openrisc: implement shadow registers
Shadow registers are part of the openrisc spec along with sr[cid], as
part of the fast context switching feature.  When exceptions occur,
instead of having to save registers to the stack if enabled the CID will
increment and a new set of registers will be available.

This patch only implements shadow registers which can be used as extra
scratch registers via the mfspr and mtspr if required.  This is
implemented in a way where it would be easy to add on the fast context
switching, currently cid is hardcoded to 0.

This is need for openrisc linux smp kernels to boot correctly.

Signed-off-by: Stafford Horne <shorne@gmail.com>
2017-05-04 09:39:01 +09:00
Peter Maydell
1e06262da6 linux-user: Use correct types in load_symbols()
Coverity doesn't like the code in load_symbols() which assumes
it can use 'int' for a variable that might hold an offset into
the guest ELF file, because in a 64-bit guest that could
overflow. Guest binaries with 2GB sections aren't very likely
and this isn't a security issue because we fully trust the
guest linux-user binary anyway, but we might as well use the
right types, which will placate Coverity. Use uint64_t to
hold section sizes, and bail out if the symbol table is too
large rather than just overflowing an int.

(Coverity issue CID1005776)

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <1486249533-5260-1-git-send-email-peter.maydell@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2017-02-16 15:29:30 +01:00
Richard Henderson
84775c43f3 target/openrisc: Keep SR_F in a separate variable
This avoids having to keep merging and extracting the flag from SR.

Reviewed-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-02-14 08:14:59 +11:00
Marek Vasut
a0a839b65b nios2: Add usermode binaries emulation
Add missing bits for qemu-user required for emulating Altera Nios2
userspace binaries.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chris Wulff <crwulff@gmail.com>
Cc: Jeff Da Silva <jdasilva@altera.com>
Cc: Ley Foon Tan <lftan@altera.com>
Cc: Sandra Loosemore <sandra@codesourcery.com>
Cc: Yves Vandervennet <yvanderv@altera.com>
Reviewed-by: Alexander Graf <agraf@suse.de>
Message-Id: <20170118220146.489-4-marex@denx.de>
Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-01-24 13:10:35 -08:00
Richard Henderson
7c248bcda1 linux-user: Add HPPA startup and main loop
Including support for the atomic memory op syscalls.

Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-01-23 09:52:40 -08:00
Richard Henderson
7c4ee5bcc8 linux-user: Support stack-grows-up in elfload.c
HPPA is a (the) stack-grows-up target, and supporting that requires
rearranging how we compute addresses while laying out the initial
program stack.  In addition, hppa32 requires 64-byte stack alignment
so parameterize that as well.

Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-01-22 18:14:10 -08:00
Alex Bennée
98c1076cc9 linux-user/elfload: ensure mmap_lock() held while setting up
Future patches will enforce the holding of mmap_lock() when we are
manipulating internal memory structures. Technically it doesn't matter
in the case of elfload as we haven't started executing yet. However it
is easier to grab the lock when required than special case the
translate-all API.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Message-Id: <20161027151030.20863-8-alex.bennee@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-10-31 10:51:16 +01:00
Michael Walle
58eb53083c linux-user: ppc64: fix ARCH_206 bit in AT_HWCAP
Only the POWER[789] CPUs should have the ARCH_206 bit set. This is what the
linux kernel does. I guess this was also the intention of commit 0e019746.
We have to make sure all *206 bits are set.

Before this patch, the flags check in the GET_FEATURES2 macro returned true
if _any_ bit was set. This worked well as long as there was only one bit
set in the 'flag' parameter. But as explained before, we have to make sure
all bits in the 'flag' parameter are set.

Signed-off-by: Michael Walle <michael@walle.cc>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2016-09-23 12:39:07 +10:00
Peter Maydell
0ef9ea290e linux-user: Use glib malloc functions in load_symbols()
Switch to using the glib malloc functions in load_symbols();
this deals with a Coverity complaint about possible
integer overflow calculating the allocation size with
'nsyms * sizeof(*syms)'.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2016-09-21 14:28:20 +03:00
Peter Maydell
772034b63e linux-user: Check dump_write() return in elf_core_dump()
One of the calls to dump_write() in elf_core_dump() was missing
a check for failure (spotted by Coverity). Add the check to
bring it into line with the other calls from this function.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2016-09-21 14:28:03 +03:00
Peter Maydell
68754b442b linux-user: Pass missing MAP_ANONYMOUS to target_mmap() call
A target_mmap() call in load_elf_binary() was missing the MAP_ANONYMOUS
flag. (Spotted by Coverity, because target_mmap() will try to use
-1 as the filedescriptor in this case.)

This has never been noticed because the code in question is for
handling ancient SVr4 iBCS2 binaries.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2016-09-21 14:26:23 +03:00
Wei Jiangang
b8da57fa15 linux-user: complete omission of removing uses of strdup
The 900cfbc just removed two unchecked uses of strdup
in fill_psinfo and missed the rest in core_dump_filename.
This patch fixes it.

Signed-off-by: Wei Jiangang <weijg.fnst@cn.fujitsu.com>
Message-Id: <1459997185-15669-2-git-send-email-weijg.fnst@cn.fujitsu.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-09-14 12:25:14 +02:00
Paolo Bonzini
02d0e09503 os-posix: include sys/mman.h
qemu/osdep.h checks whether MAP_ANONYMOUS is defined, but this check
is bogus without a previous inclusion of sys/mman.h.  Include it in
sysemu/os-posix.h and remove it from everywhere else.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-06-16 18:39:03 +02:00
Peter Maydell
167e4cdc29 linux-user: arm: Remove ARM_cpsr and similar #defines
The #defines of ARM_cpsr and friends in linux-user/arm/target-syscall.h
can clash with versions in the system headers if building on an
ARM or AArch64 build (though this seems to be dependent on the version
of the system headers). The QEMU defines are not very useful (it's
not clear that they're intended for use with the target_pt_regs struct
rather than (say) the CPUARMState structure) and we only use them in one
function in elfload.c anyway. So just remove the #defines and directly
access regs->uregs[].

Reported-by: Christopher Covington <cov@codeaurora.org>
Tested-by: Christopher Covington <cov@codeaurora.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2016-05-27 14:50:39 +03:00
Veronia Bahaa
f348b6d1a5 util: move declarations out of qemu-common.h
Move declarations out of qemu-common.h for functions declared in
utils/ files: e.g. include/qemu/path.h for utils/path.c.
Move inline functions out of qemu-common.h and into new files (e.g.
include/qemu/bcd.h)

Signed-off-by: Veronia Bahaa <veroniabahaa@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-03-22 22:20:17 +01:00
Peter Maydell
d39594e9d9 linux-user: Clean up includes
Clean up includes so that osdep.h is included first and headers
which it implies are not included manually.

This commit was created with scripts/clean-includes.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1453832250-766-10-git-send-email-peter.maydell@linaro.org
2016-01-29 15:07:22 +00:00
Paolo Bonzini
1382902055 user: introduce "-d page"
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-12-17 17:33:48 +01:00
Paolo Bonzini
0c2d70c448 translate-all: ensure host page mask is always extended with 1's
Anthony reported that >4GB guests on Xen with 32bit QEMU broke after
commit 4ed023c ("Round up RAMBlock sizes to host page sizes", 2015-11-05).

In that patch sizes are masked against qemu_host_page_size/mask which
are uintptr_t, and thus 32bit on a 32bit QEMU, even though the ram space
might be bigger than 4GB on Xen.

Since ram_addr_t is not available on user-mode emulation targets, ensure
that we get a sign extension when masking away the low bits of the address.
Remove the ~10 year old scary comment that the type of these variables
is probably wrong, with another equally scary comment.  The new comment
however does not have "???" in it, which is arguably an improvement.

For completeness use the alignment macros in linux-user and bsd-user
instead of manually doing an &.  linux-user and bsd-user are not affected
by the Xen issue, however.

Reviewed-by: Juan Quintela <quintela@redhat.com>
Reported-by: Anthony PERARD <anthony.perard@citrix.com>
Fixes: 4ed023ce2a
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-12-02 13:12:30 +01:00
Markus Armbruster
c78d65e8a7 linux-user: Use g_new() & friends where that makes obvious sense
g_new(T, n) is neater than g_malloc(sizeof(T) * n).  It's also safer,
for two reasons.  One, it catches multiplication overflowing size_t.
Two, it returns T * rather than void *, which lets the compiler catch
more type errors.

This commit only touches allocations with size arguments of the form
sizeof(T).  Same Coccinelle semantic patch as in commit b45c03f.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2015-10-08 19:46:47 +03:00
Stefan Brüns
59baae9a62 linux-user: remove MAX_ARG_PAGES limit
Instead of creating a temporary copy for the whole environment and
the arguments, directly copy everything to the target stack.

For this to work, we have to change the order of stack creation and
copying the arguments.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2015-09-28 16:29:11 +03:00
Stefan Brüns
84646ee25b linux-user: remove unused image_info members
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2015-09-28 16:29:01 +03:00
Peter Crosthwaite
4ecd4d16a0 ppc: Rename ELF_MACHINE to be PPC specific
Rename ELF_MACHINE to be PPC specific. This is used as-is by the
various PPC bootloaders and is locally defined to ELF_MACHINE in linux
user in PPC specific ifdeffery.

This removes another architecture specific definition from the global
namespace (as desired by multi-arch).

Cc: Alexander Graf <agraf@suse.de>
Cc: qemu-ppc@nongnu.org
Reviewed-by: Richard Henderson <rth@twiddle.net>
Acked-By: Riku Voipio <riku.voipio@linaro.org>
Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-09-25 12:04:44 +02:00
Peter Crosthwaite
b597c3f7da arm: Remove ELF_MACHINE from cpu.h
The only generic code relying on this is linux-user. Linux user
already has a lot of #ifdef TARGET_ customisation so instead, define
ELF_ARCH as either EM_ARM or EM_AARCH64 appropriately.

The armv7m bootloader can just pass EM_ARM directly, as that
is architecture specific code. Note that arm_boot already has its own
logic selecting an arm specific elf machine so this makes V7M more
consistent with arm_boot.

This removes another architecture specific definition from the global
namespace.

Cc: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Acked-By: Riku Voipio <riku.voipio@linaro.org>
Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-09-25 12:04:43 +02:00
Peter Crosthwaite
d276a604bf linux-user: elfload: Provide default for elf_check_arch
For many arch's this macro is defined as the predicatable behaviour
of checking the argument for eqaulity against ELF_ARCH. Provide a
default define as such, so only archs with special handling (usually
allowing multiple EM values) need to provide a def.

Arches that do any of:

1: provide this def exactly the same way as the new default
        (alpha, x86_64)
2: check against ELF_MACHINE while defining ELF_ARCH == ELF_MACHINE
        (arm, aarch64)
3: check against EM_FOO directly while defining ELF_ARCH == EM_FOO
        (unicore32, sparc32, ppc32, mips, openrisc, sh4, cris, m86k)

have their elf_check_arch removed as the default will provide the
correct behaviour.

Reviewed-by: Richard Henderson <rth@twiddle.net>
Acked-By: Riku Voipio <riku.voipio@linaro.org>
Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-09-25 12:04:43 +02:00
Peter Crosthwaite
75be901cdc linux_user: elfload: Default ELF_MACHINE to ELF_ARCH
In most (but not all) cases, ELF_MACHINE and ELF_ARCH are safely the
same. Default ELF_MACHINE to ELF_ARCH. This makes defining ELF_MACHINE
optional for target-*/cpu.h when they are known to match.

Reviewed-by: Richard Henderson <rth@twiddle.net>
Acked-By: Riku Voipio <riku.voipio@linaro.org>
Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-09-25 12:04:43 +02:00
Chen Gang
b16189b222 linux-user: Support tilegx architecture in linux-user
Add main working flow feature, system call processing feature, and elf64
tilegx binary loading feature, based on Linux kernel tilegx 64-bit
implementation.

[rth: Moved all of the implementation of atomic instructions to a later patch.]

Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <BLU436-SMTP938552D42808AA60634582B9660@phx.gbl>
Signed-off-by: Richard Henderson <rth@twiddle.net>
2015-09-15 07:41:19 -07:00
Daniel P. Berrange
b6af097528 maint: remove / fix many doubled words
Many source files have doubled words (eg "the the", "to to",
and so on). Most of these can simply be removed, but a couple
were actual mis-spellings (eg "to to" instead of "to do").
There was even one triple word score "to to to" :-)

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2015-09-11 10:21:38 +03:00
Laurent Vivier
4cbea59869 linux-user: remove --enable-guest-base/--disable-guest-base
All tcg host architectures now support the guest base and as
there is no real performance lost, it can be always enabled.

Anyway, guest base use can be disabled lively by setting guest
base to 0.

CONFIG_USE_GUEST_BASE is defined as (USE_GUEST_BASE && USER_ONLY),
it should have to be replaced by CONFIG_USER_ONLY in non CONFIG_USER_ONLY
parts, but as some other parts are using !CONFIG_SOFTMMU I have chosen to
use !CONFIG_SOFTMMU instead.

Reviewed-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <1440373328-9788-2-git-send-email-laurent@vivier.eu>
Signed-off-by: Richard Henderson <rth@twiddle.net>
2015-08-24 11:14:17 -07:00
Yongbok Kim
79cb1f1d69 linux-user: Use abi_ulong for TARGET_ELF_PAGESTART
TARGET_ELF_PAGESTART is required to use abi_ulong to correctly handle
addresses for different target bits width.
This patch fixes a problem when running a 64-bit user mode application
on 32-bit host machines.

Signed-off-by: Yongbok Kim <yongbok.kim@imgtec.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2015-06-15 11:36:58 +03:00
Richard Henderson
e42fd944f0 linux-user: Add HWCAP for SH4
Only exposing FPU and LLSC as the only features
supported by the translator.

Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2015-06-12 12:02:47 +02:00
Emilio G. Cota
52a53afebd linux-user/elfload: use QTAILQ_FOREACH instead of open-coding it
Signed-off-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2015-04-30 16:05:49 +03:00
Peter Maydell
2ccf97ec0f linux-user/elfload.c: Don't use _raw accessor functions
The _raw accessor functions are an implementation detail that has
leaked out to some callsites. Use get_user_u64() instead of ldq_raw().

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-id: 1421334118-3287-5-git-send-email-peter.maydell@linaro.org
2015-01-20 15:19:33 +00:00
Tom Musta
ccf661f827 linux-user: Do not subtract offset from end address
When computing the upper address of a program segment, do not subtract the
offset from the virtual address; instead compute the sum of the virtual address
and the memory size.

Signed-off-by: Tom Musta <tommusta@gmail.com>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2014-11-11 08:12:45 +02:00
Jonas Maebe
a93934fecd elf: take phdr offset into account when calculating the program load address
The first program header does not necessarily start at offset 0. This change
corresponds to what the Linux kernel does in load_elf_binary().

Signed-off-by: Jonas Maebe <jonas.maebe@elis.ugent.be>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2014-11-03 11:03:34 +02:00
Magnus Reftel
c5e4a5a95e linux-user: Let user specify random seed
This patch introduces the -seed command line option and the
QEMU_RAND_SEED environment variable for setting the random seed, which
is used for the AT_RANDOM ELF aux entry.

Signed-off-by: Magnus Reftel <reftel@spotify.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2014-11-03 11:03:34 +02:00
Mikhail Ilyin
1a1c4db9b2 translate-all.c: memory walker initial address miscalculation
The initial base address is miscalculated in walk_memory_regions().
It has to be shifted TARGET_PAGE_BITS more. Holder variables are
extended to target_ulong size otherwise they don't fit for MIPS N32
(a 32-bit ABI with a 64-bit address space) and qemu won't compile.
The issue led to incorrect debug output of memory maps and a
mis-formed coredumped file.

Signed-off-by: Mikhail Ilyin <m.ilin@samsung.com>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2014-10-06 21:53:35 +03:00
Tom Musta
67d6d829cd linux-user: Move get_ppc64_abi
The get_ppc64_abi is used to determine the ELF ABI (i.e. V1 or V2). This
routine is currently implemented in the linux-user/elfload.c file but
is useful in other scenarios.  Move the routine to a more generally
available location (linux-user/ppc/target_cpu.h).

Signed-off-by: Tom Musta <tommusta@gmail.com>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2014-08-22 15:06:35 +03:00
Tom Musta
a60438ddd6 linux-user: Support HWCAP2 in PowerPC
Set bits in the AT_HWCAP2 entry of the AUXV.  Specifically, detect and set bits
for bctar, ISEL and ISA 2.07.

Signed-off-by: Tom Musta <tommusta@gmail.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
2014-06-27 13:48:22 +02:00
Tom Musta
0e019746d7 linux-user: Identify Addition Hardware Capabilities for PowerPC
Add VSX, DFP and ISA 2.06 to the bits identified in the AT_HWCAP
entry of the AUXV.

Signed-off-by: Tom Musta <tommusta@gmail.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
2014-06-27 13:48:22 +02:00
Tom Musta
623e250abd linux-user: Correct AUXV Cache Line Sizes for PowerPC
Set the AT_ICACHEBSIZE and AT_DCACHEBSIZE entries of the AUXV to match the
CPU model's cache line sizes.  This fixes memory clobbering problems on more
recent Book 3s implementations; memset(p, 0, N) will use the dcbz instruction
when N is sufficiently large and many of the newer server CPUs have cache lines
sizes of 128 bytes.

Signed-off-by: Tom Musta <tommusta@gmail.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
2014-06-27 13:48:21 +02:00
Craig Heffner
d3606f0744 User mode support for Linux ELF files with no section header
In user mode Linux, Qemu currently refuses to load ELF files that do not
contain section headers (ehdr->e_shentsize == 0). Since section headers are not
required in order to load an ELF file, simply removing the e_shentsize check in
elf_check_ehdr() allows ELF binaries with no section headers to be run properly
in user mode:

Signed-off-by: Craig Heffner <cheffner@tacnetsol.com>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2014-06-17 09:21:41 +03:00
Alexander Graf
a70daba377 linux-user: Tell guest about big host page sizes
We tell the guest its page size via AUX vectors. The guest process then uses
this page size as information on which boundaries it can mmap() things.

However, if the host has a bigger page size granularity than the guest, it can
not fulfill these mmap() requests - which falls apart when MAP_FIXED is passed
to mmap.

So in that case, let the guest know that we're running on a bigger page size
granularity than the target would require.

This fixes running qemu-ppc (TARGET_PAGE_SIZE=4k) on a 64k page size ppc64 host
for me.

Signed-off-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Richard Henderson <rth@twiddle.net>
2014-06-16 13:24:45 +02:00
Tom Musta
f46e9a0b99 target-ppc: Confirm That .bss Pages Are Valid
The existing code does a check to ensure that a .bss region is properly
mmap'd.  When additional mmap is required, the (guest) pages are also
validated.  However, this code has a bug: when host page size is larger
than target page size, it is possible for the .bss pages to already be
(host) mapped but the guest .bss pages may not be valid.

The check to mmap additional space is separated from the flagging of the
target (guest) pages, thus ensuring that both aspects are done properly.

Signed-off-by: Tom Musta <tommusta@gmail.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
2014-06-16 13:24:40 +02:00
Doug Kwan
d90b94cd78 target-ppc: Support little-endian PPC64 in user mode.
Look at ELF header to determine ABI version on PPC64.  This is required
for executing the first instruction correctly.  Also print correct machine
name in uname() system call.

Signed-off-by: Doug Kwan <dougkwan@google.com>
Signed-off-by: Tom Musta <tommusta@gmail.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
2014-06-16 13:24:40 +02:00
Peter Maydell
f6fe04d566 target-arm: A64: Implement two-register SHA instructions
Implement the two-register SHA instruction group from the optional
Crypto Extensions.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1401458125-27977-10-git-send-email-peter.maydell@linaro.org
2014-06-09 16:06:12 +01:00
Peter Maydell
5acc765c04 target-arm: A64: Implement AES instructions
Implement the AES instructions from the optional Crypto Extensions.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1401458125-27977-8-git-send-email-peter.maydell@linaro.org
2014-06-09 16:06:12 +01:00
Peter Maydell
130f2e7dcb target-arm: A64: Implement CRC instructions
Implement the optional A64 CRC instructions.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1401458125-27977-6-git-send-email-peter.maydell@linaro.org
2014-06-09 16:06:12 +01:00
Peter Maydell
411bdc7837 target-arm: A64: Use PMULL feature bit for PMULL
Now that we have a separate ARM_FEATURE_V8_PMULL bit, use it for
the A64 PMULL, not the AES feature bit.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-06-09 16:06:11 +01:00
Peter Maydell
4e624edaeb target-arm: add support for v8 VMULL.P64 instruction
Add support for the VMULL.P64 polynomial 64x64 to 128 bit multiplication
instruction in the A32/T32 instruction sets; this is part of the v8
Crypto Extensions.

To do this we have to move the neon_pmull_64_{lo,hi} helpers from
helper-a64.c into neon_helper.c so they can be used by the AArch32
translator.

Inspired-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1401386724-26529-4-git-send-email-peter.maydell@linaro.org
2014-06-09 16:06:11 +01:00
Ard Biesheuvel
f1ecb913d8 target-arm: add support for v8 SHA1 and SHA256 instructions
This adds support for the SHA1 and SHA256 instructions that are available
on some v8 implementations of Aarch32.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1401386724-26529-2-git-send-email-peter.maydell@linaro.org
[PMM:
 * rebase
 * fix bad indent
 * add a missing UNDEF check for Q!=1 in the 3-reg SHA1/SHA256 case
 * use g_assert_not_reached()
 * don't re-extract bit 6 for the 2-reg-misc encodings
 * set the ELF HWCAP2 bits for the new features
]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-06-09 16:06:11 +01:00
Peter Maydell
ad6919dc0a linux-user/elfload.c: Support ARM HWCAP2 flags
The ARM kernel has chosen to spill into the HWCAP2 ELF feature bit flags
early, even though it hasn't yet exhausted all 32 bits of the HWCAP word.
Add support for setting this in the same way we do for HWCAP.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2014-05-02 21:59:36 +03:00
Peter Maydell
24e76ff06b linux-user/elfload.c: Fix A64 code which was incorrectly acting like A32
The ARM target-specific code in elfload.c was incorrectly allowing
the 64-bit ARM target to use most of the existing 32-bit definitions:
most noticably this meant that our HWCAP bits passed to the guest
were wrong, and register handling when dumping core was totally
broken. Fix this by properly separating the 64 and 32 bit code,
since they have more differences than similarities.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Cc: qemu-stable@nongnu.org
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2014-05-02 21:59:36 +03:00
Peter Maydell
2468265465 linux-user/elfload.c: Update ARM HWCAP bits
The kernel has added support for a number of new ARM HWCAP bits;
add them to QEMU, including support for setting them where we have
a corresponding CPU feature bit.

We were also incorrectly setting the VFPv3D16 HWCAP -- this means
"only 16 D registers", not "supports 16-bit floating point format";
since QEMU always has 32 D registers for VFPv3, we can just remove
the line that incorrectly set this bit.

The kernel does not set the HWCAP_FPA even if it is providing FPA
emulation via nwfpe, so don't set this bit in QEMU either.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Cc: qemu-stable@nongnu.org
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2014-05-02 21:59:36 +03:00
Peter Maydell
43ce393ee5 linux-user/elfload.c: Fix incorrect ARM HWCAP bits
The ELF HWCAP bits for ARM features THUMBEE, NEON, VFPv3 and VFPv3D16 are
all off by one compared to the kernel definitions. Fix this discrepancy
and add in the missing CRUNCH bit which was the cause of the off-by-one
error. (We don't emulate any of the CPUs which have that weird hardware,
so it's otherwise uninteresting to us.)

Cc: qemu-stable@nongnu.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2014-05-02 21:59:36 +03:00
James Hogan
8c0f0a60d4 linux-user: Assert stack used for auxvec, envp, argv
Assert that the amount of stack space used for auxvec, envp & argv
exactly matches the amount allocated. This catches if DLINFO_ITEMS isn't
updated when another NEW_AUX_ENT is added.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Riku Voipio <riku.voipio@iki.fi>
Cc: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2014-05-02 21:59:27 +03:00
James Hogan
ad1c7e0faa linux-user: Correct DLINFO_ITEMS
Commit a07c67dfcc (Implement AT_CLKTCK.) back in March 2008 added a
new auxvec entry but didn't increment DLINFO_ITEMS, so it's been out of
sync ever since.

Bump it up to 14 so that it matches the number of NEW_AUX_ENT's that
need to be counted in create_elf_tables().

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Riku Voipio <riku.voipio@iki.fi>
Cc: Paul Brook <paul@codesourcery.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2014-03-26 14:11:39 +02:00
Peter Maydell
6b1275ff15 linux-user: Don't reserve space for commpage for AArch64
AArch64 Linux, unlike AArch32, doesn't use a commpage. This means we
should not be reserving room in the guest address space for one.
Fixes LP:1287195.

Reported-by: Amanieu d'Antras <amanieu@gmail.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2014-03-17 11:44:31 +02:00
Andreas Färber
0429a97195 cpu: Move opaque field from CPU_COMMON to CPUState
Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-13 19:20:47 +01:00
Peter Maydell
6afafa86f3 linux-user/elfload.c: Avoid calling g_free() on uninitialized data
Avoid calling g_free() on unintialized data in the error-handling
paths in elf_core_dump() by splitting the initialization of the
elf_note_info struct out of fill_note_info() so that it's always
valid to call free_note_info() whether we got to the point of
being able to fill_note_info() or not.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2014-02-18 16:54:06 +02:00
Will Newton
f0116c5458 linux-user: Remove regs parameter of load_elf_binary and load_flt_binary
The regs parameter is not used anywhere, so remove it.

Signed-off-by: Will Newton <will.newton@linaro.org>
Reviewed-by: Erik de Castro Lopo <erikd@mega-nerd.com>
Reviewed-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2014-01-10 08:51:37 +02:00
Alexander Graf
99033caee6 linux-user: Add AArch64 support
This patch adds support for AArch64 in all the small corners of
linux-user (primarily in image loading and startup code).

Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: John Rigby <john.rigby@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1378235544-22290-22-git-send-email-peter.maydell@linaro.org
Message-id: 1368505980-17151-11-git-send-email-john.rigby@linaro.org
[PMM:
 * removed some unnecessary #defines from syscall.h
 * catch attempts to use a 32 bit only cpu with aarch64-linux-user
 * termios stuff moved into its own patch
 * we specify our minimum uname version here now
]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2013-09-10 19:11:29 +01:00
Andreas Färber
bdc44640cb cpu: Use QTAILQ for CPU list
Introduce CPU_FOREACH(), CPU_FOREACH_SAFE() and CPU_NEXT() shorthand
macros.

Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-09-03 12:25:55 +02:00
Andreas Färber
a2247f8ec9 linux-user: Change thread_env to CPUState
Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-09 21:33:01 +02:00
Andreas Färber
182735efaf cpu: Make first_cpu and next_cpu CPUState
Move next_cpu from CPU_COMMON to CPUState.
Move first_cpu variable to qom/cpu.h.

gdbstub needs to use CPUState::env_ptr for now.
cpu_copy() no longer needs to save and restore cpu_next.

Acked-by: Paolo Bonzini <pbonzini@redhat.com>
[AF: Rebased, simplified cpu_copy()]
Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-09 21:32:54 +02:00
Eduardo Habkost
0514ef2fbb target-i386: Replace cpuid_*features fields with a feature word array
This replaces the feature-bit fields on both X86CPU and x86_def_t
structs with an array.

With this, we will be able to simplify code that simply does the same
operation on all feature words (e.g. kvm_check_features_against_host(),
filter_features_for_kvm(), add_flagname_to_bitmaps(), CPU feature-bit
property lookup/registration, and the proposed "feature-words" property)

The following field replacements were made on X86CPU and x86_def_t:

  (cpuid_)features         -> features[FEAT_1_EDX]
  (cpuid_)ext_features     -> features[FEAT_1_ECX]
  (cpuid_)ext2_features    -> features[FEAT_8000_0001_EDX]
  (cpuid_)ext3_features    -> features[FEAT_8000_0001_ECX]
  (cpuid_)ext4_features    -> features[FEAT_C000_0001_EDX]
  (cpuid_)kvm_features     -> features[FEAT_KVM]
  (cpuid_)svm_features     -> features[FEAT_SVM]
  (cpuid_)7_0_ebx_features -> features[FEAT_7_0_EBX]

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-05-02 00:27:55 +02:00
Paolo Bonzini
918fc54caf elfload: use abi_llong/ullong instead of target_llong/ullong
The alignment is a characteristic of the ABI, not the CPU.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
2013-04-18 14:12:31 +02:00
Paolo Bonzini
f8fd4fc4cd elfload: use abi_int/uint instead of target_int/uint
The alignment is a characteristic of the ABI, not the CPU.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
2013-04-18 14:12:31 +02:00
Paolo Bonzini
1ddd592fd3 elfload: use abi_short/ushort instead of target_short/ushort
The alignment is a characteristic of the ABI, not the CPU.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
2013-04-18 14:12:31 +02:00
Paolo Bonzini
86cd7b2d48 elfload: use tswapreg consistently in elf_core_copy_regs
Reviewed-by: Peter Maydell <peter.maydell@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
2013-04-18 14:12:31 +02:00
Paolo Bonzini
a29f998d04 elfload: fix size of registers for N32
Registers are 64-bit in size for the MIPS n32 ABI.  Define
target_elf_greg_t accordingly, and use the correct function
to do endian swaps.

Reviewed-by: Peter Maydell <peter.maydell@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
2013-04-18 14:12:31 +02:00
Paolo Bonzini
ca98ac830f elfload: fix size of ABI-dependent fields in core dumps
Some fields in core dumps are 32-bit in 32-or-64 environments (ppc64abi32,
sparc32plus).  Use abi_long/ulong for those.

Also, the fields of target_elf_siginfo are ints.  Use tswap32 to convert them.

Reviewed-by: Peter Maydell <peter.maydell@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
2013-04-18 14:12:31 +02:00
Paolo Bonzini
76cad71136 build: kill libdis, move disassemblers to disas/
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-12-19 08:29:06 +01:00
Jim Meyering
900cfbcac6 linux-user: remove two unchecked uses of strdup
Remove two uses of strdup (use g_path_get_basename instead),
and add a comment that this strncpy use is ok.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Jim Meyering <meyering@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-10-05 07:58:37 -05:00
Meador Inge
806d102141 linux-user: Use init_guest_space when -R and -B are specified
Roll the code used to initialize the guest memory space when -R
or -B is used into 'init_guest_space' and then call 'init_guest_space'
from the driver.  This way the reserved guest memory space can
be probed for.  Calling 'mmap' just once as is currently done is not
guaranteed to succeed since the host address space validation might fail.

Signed-off-by: Meador Inge <meadori@codesourcery.com>
[PMM: Fixed minor whitespace errors.]
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2012-08-14 20:26:55 +01:00
Meador Inge
dce104013d linux-user: Factor out guest space probing into a function
Signed-off-by: Meador Inge <meadori@codesourcery.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2012-08-14 20:26:55 +01:00
Jia Liu
d962783e98 target-or32: Add linux user support
Add QEMU OpenRISC linux user support.

Signed-off-by: Jia Liu <proljc@gmail.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-07-27 21:13:05 +00:00
Paul Brook
d8fd295499 Userspace ARM BE8 support
Add support for ARM BE8 userspace binaries.
i.e. big-endian data and little-endian code.
In principle LE8 mode is also possible, but AFAIK has never actually
been implemented/used.

System emulation doesn't have any useable big-endian board models,
but should in principle work once you fix that.
Dynamic endianness switching requires messing with data accesses,
preferably with TCG cooperation, and is orthogonal to BE8 support.

Signed-off-by: Paul Brook <paul@codesourcery.com>
[PMM: various changes, mostly as per my suggestions in code review:
 * rebase
 * use EF_ defines rather than hardcoded constants
 * make bswap_code a bool for future VMSTATE macro compatibility
 * update comment in cpu.h about TB flags bit field usage
 * factor out load-code-and-swap into arm_ld*_code functions and
   get_user_code* macros
 * fix stray trailing space at end of line
 * added braces in disas.c to satisfy checkpatch
]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2012-04-06 19:25:57 +03:00
Benoit Canet
adf050b1b9 arm-linux-user: fix elfload.c's AT_HWCAP to reflect cpu features.
The cpu capabilities passed by the elf loader in AT_HWCAP where
a constant.
Make AT_HWCAP reflect the emulated cpu features in order to give
correct clues to eglibc.

Riku Voipio: fixed to apply to current head

Fix :  [Bug 887516] [NEW] VFP support reported for the PXA270

Signed-off-by: Benoit Canet <benoit.canet@gmail.com>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2012-04-06 19:06:34 +03:00
Andreas Färber
9349b4f9fd Rename CPUState -> CPUArchState
Scripted conversion:
  for file in *.[hc] hw/*.[hc] hw/kvm/*.[hc] linux-user/*.[hc] linux-user/m68k/*.[hc] bsd-user/*.[hc] darwin-user/*.[hc] tcg/*/*.[hc] target-*/cpu.h; do
    sed -i "s/CPUState/CPUArchState/g" $file
  done

All occurrences of CPUArchState are expected to be replaced by QOM CPUState,
once all targets are QOM'ified and common fields have been extracted.

Signed-off-by: Andreas Färber <afaerber@suse.de>
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
2012-03-14 22:20:27 +01:00
Andreas Färber
0539024885 linux-user: Don't overuse CPUState
In target-specific code use CPU*State.

While at it, fix indentation on those lines.

Signed-off-by: Andreas Färber <afaerber@suse.de>
2012-03-14 22:20:24 +01:00
Alexander Graf
125b0f55b6 linux-user: save auxv length
We create our own AUXV segment on stack and save a pointer to it.
However we don't save the length of it, so any code that wants to
do anything useful with it later on has to walk it again.

Instead, let's remember the length of our AUXV segment. This
simplifies later uses by a lot.

(edited by Riku to apply to qemu HEAD)

Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Riku Voipio <riku.voipio@iki.fi>
2012-02-02 17:51:19 +02:00
Stefan Weil
c7c530cd3e elf: Improve symbol lookup (optimize, fix for bsd-user)
Coverity complained about local variable key which was only partially
initiated. Only key.st_value was set. As this was also the only part
of key which was used in function symfind, the code could be optimized
by directly passing a pointer to orig_addr.

In bsd-user/elfload.c, fix ec822001a2
was missing. This was a simple replacement of > by >= in symfind, so
I fixed it here without creating an additional patch.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Andrzej Zaborowski <andrew.zaborowski@intel.com>
2012-01-10 18:40:09 +01:00
Dong Xu Wang
b4916d7b9d fix spelling in linux-user sub directory
Cc: Riku Voipio <riku.voipio@iki.fi>
Signed-off-by: Dong Xu Wang <wdongxu@linux.vnet.ibm.com>
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2011-12-02 10:50:56 +00:00
Peter Maydell
7dd47667b9 linux-user/elfload.c: Don't memset(NULL..) if malloc() failed
If a malloc() in copy_elf_strings() failed we would call memset()
before the "did malloc fail?" check. Fix this by moving to the
glib alloc/free routines for this memory so we can use g_try_malloc0
rather than having a separate memset(). Spotted by Coverity (see
bug 887883).

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-11-11 12:49:53 -06:00
Richard Henderson
8e78064e9d ppc64-linux-user: Properly interpret the entry function descriptor.
Don't confuse the load address with the load bias.  They're equal
for ET_DYN objects (i.e. ld.so) but different for ET_EXEC objects
(i.e. statically linked).

Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2011-10-27 14:43:30 +03:00
Dr. David Alan Gilbert
97cc75606a linux-user: Implement new ARM 64 bit cmpxchg kernel helper
linux-user: Implement new ARM 64 bit cmpxchg kernel helper

Linux 3.1 will have a new kernel-page helper for ARM implementing
64 bit cmpxchg. Implement this helper in QEMU linux-user mode:
 * Provide kernel helper emulation for 64bit cmpxchg
 * Allow guest to object to guest offset to ensure it can map a page
 * Populate page with kernel helper version

Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Dr. David Alan Gilbert <david.gilbert@linaro.org>
2011-09-09 10:46:02 +03:00
Anthony Liguori
7267c0947d Use glib memory allocation and free functions
qemu_malloc/qemu_free no longer exist after this commit.

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-08-20 23:01:08 -05:00
Artyom Tarasenko
cf973e469b set ELF_HWCAP for SPARC and SPARC64
setting ELF_HWCAP fixes dynamic library loading for Linux/sparc64
This patch allows loading busybox from Debian 6 initrd

Signed-off-by: Artyom Tarasenko <atar4qemu@gmail.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-07-14 17:41:29 +00:00
Laurent ALFONSI
14322bad88 linux-user: Define AT_RANDOM to support target stack protection mechanism.
The dynamic linker from the GNU C library v2.10+ uses the ELF
auxiliary vector AT_RANDOM [1] as a pointer to 16 bytes with random
values to initialize the stack protection mechanism.  Technically the
emulated GNU dynamic linker crashes due to a NULL pointer
derefencement if it is built with stack protection enabled and if
AT_RANDOM is not defined by the QEMU ELF loader.

[1] This ELF auxiliary vector was introduced in Linux v2.6.29.

This patch can be tested with the code above:

    #include <elf.h>       /* Elf*_auxv_t, AT_RANDOM, */
    #include <stdio.h>     /* printf(3), */
    #include <stdlib.h>    /* exit(3), EXIT_*, */
    #include <stdint.h>    /* uint8_t, */
    #include <string.h>    /* memcpy(3), */

    #if defined(__LP64__) || defined(__ILP64__) || defined(__LLP64__)
    #    define Elf_auxv_t Elf64_auxv_t
    #else
    #    define Elf_auxv_t Elf32_auxv_t
    #endif

    main(int argc, char* argv[], char* envp[])
    {
        Elf_auxv_t *auxv;

        /* *envp = NULL marks end of envp. */
        while (*envp++ != NULL);

        /* auxv->a_type = AT_NULL marks the end of auxv. */
        for (auxv = (Elf_auxv_t *)envp; auxv->a_type != AT_NULL; auxv++) {
            if (auxv->a_type == AT_RANDOM) {
                int i;
                uint8_t rand_bytes[16];

                printf("AT_RANDOM is: 0x%x\n", auxv->a_un.a_val);
                memcpy(rand_bytes, (const uint8_t *)auxv->a_un.a_val, sizeof(rand_bytes));
                printf("it points to: ");
                for (i = 0; i < 16; i++) {
                    printf("0x%02x ", rand_bytes[i]);
                }
                printf("\n");
                exit(EXIT_SUCCESS);
            }
        }
        exit(EXIT_FAILURE);
    }

Changes introduced in v2 and v3:

    * Fix typos + thinko (AT_RANDOM is used for stack canary, not for
      ASLR)

    * AT_RANDOM points to 16 random bytes stored inside the user
      stack.

    * Add a small test program.

Signed-off-by: Cédric VINCENT <cedric.vincent@st.com>
Signed-off-by: Laurent ALFONSI <laurent.alfonsi@st.com>
Signed-off-by: Riku Voipio <riku.voipio@iki.fi>
2011-06-21 20:30:09 +03:00
Peter Maydell
f3ed1f5d47 linux-user: Handle images where lowest vaddr is not page aligned
Fix a bug in the linux-user ELF loader code where it was not correctly
handling images where the lowest vaddr to be loaded was not page aligned.
The problem was that the code to probe for a suitable guest base address
was changing the 'loaddr' variable (by rounding it to a page boundary),
which meant that the load bias would then be incorrectly calculated
unless loaddr happened to already be page-aligned.

Binaries generated by gcc with the default linker script do start with
a loadable segment at a page-aligned vaddr, so were unaffected. This
bug was noticed with a binary created by the Google Go toolchain for ARM.

We fix the bug by refactoring the "probe for guest base" code out into
its own self-contained function.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Riku Voipio <riku.voipio@iki.fi>
2011-06-21 20:29:01 +03:00
Cédric VINCENT
b947527941 linux-user: Fix the load of ELF files that have no "useful" symbol
This patch fixes a "double free()" due to "realloc(syms, 0)" in the
loader when the ELF file has no "useful" symbol, as with the following
example (compiled with "sh4-linux-gcc -nostdlib"):

    .text
    .align 1
    .global _start
    _start:
        mov     #1, r3
        trapa   #40     // syscall(__NR_exit)
        nop

The bug appears when the log (option "-d") is enabled.

Signed-off-by: Cédric VINCENT <cedric.vincent@st.com>
Signed-off-by: Yves JANIN <yves.janin@st.com>
Signed-off-by: Riku Voipio <riku.voipio@iki.fi>
Reviewed-by: Richard Henderson <rth@twiddle.net>
2011-06-21 20:28:38 +03:00
Ulrich Hecht
a4c075f178 s390x: s390x-linux-user support
This patch adds support for running s390x binaries in the linux-user emulation
code.

Signed-off-by: Ulrich Hecht <uli@suse.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2011-05-20 17:35:12 +02:00
Guan Xuetao
d2fbca9422 unicore32: necessary modifications for other files to support unicore32
Signed-off-by: Guan Xuetao <gxt@mprc.pku.edu.cn>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-04-12 18:49:05 +00:00
Laurent Vivier
80f5ce758a linux-user: correct core dump format
This patch allows to really use the core dumped by qemu with guest
architecture tools.

- it adds a missing bswap_phdr() for the program headers
  of memory regions.

  "objdump -x" sample:

BEFORE:

0x1000000 off    0x00200000 vaddr 0x00000400 paddr 0x00000000 align 2**21
         filesz 0x00000000 memsz 0x00100000 flags ---
0x1000000 off    0x00200000 vaddr 0x00100400 paddr 0x00000000 align 2**21
         filesz 0x00000000 memsz 0x00080000 flags --- 6000000

AFTER:

    LOAD off    0x00002000 vaddr 0x00040000 paddr 0x00000000 align 2**13
         filesz 0x00000000 memsz 0x00001000 flags ---
    LOAD off    0x00002000 vaddr 0x00041000 paddr 0x00000000 align 2**13
         filesz 0x00000000 memsz 0x00000800 flags rw-

- it doesn't pad the note size to sizeof(int32_t).
  On m68k the NT_PRSTATUS note size is 154 and
  must not be rounded up to 156, because this value is checked by
  objdump and gdb.

  "gdb" symptoms:

      "warning: Couldn't find general-purpose registers in core file."

  "objdump -x" sample:

BEFORE:

Sections:
Idx Name          Size      VMA       LMA       File off  Algn
  0 note0         000001c4  00000000  00000000  000003b4  2**0
                  CONTENTS, READONLY
  1 .auxv         00000070  00000000  00000000  00000508  2**2
                  CONTENTS
  2 proc1         00100000  00000400  00000000  00200000  2**10
                  READONLY

AFTER:

Sections:
Idx Name          Size      VMA       LMA       File off  Algn
  0 note0         000001c4  00000000  00000000  000003b4  2**0
                  CONTENTS, READONLY
  1 .reg/19022    00000050  00000000  00000000  0000040e  2**2
                  CONTENTS
  2 .reg          00000050  00000000  00000000  0000040e  2**2
                  CONTENTS
  3 .auxv         00000070  00000000  00000000  00000508  2**2
                  CONTENTS
  4 load1         00000000  00040000  00000000  00002000  2**13
                  ALLOC, READONLY

Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Riku Voipio <riku.voipio@nokia.com>
2011-02-17 11:46:34 +02:00
Mike Frysinger
1af02e83c0 linux-user/elfload: add FDPIC support
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Riku Voipio <riku.voipio@nokia.com>
2011-02-09 10:33:54 +02:00
Stefan Weil
8d79de6e42 linux-user: Fix possible realloc memory leak
Extract from "man realloc":
"If realloc() fails the original block is left untouched;
it is not freed or moved."

Fix a possible memory leak (reported by cppcheck).

Cc: Riku Voipio <riku.voipio@iki.fi>
Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Riku Voipio <riku.voipio@nokia.com>
2011-02-09 10:33:53 +02:00
Richard Henderson
5d5c99300d linux-user: Protect against allocation failure in load_symbols.
Cc: malc <av1474@comtv.ru>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: malc <av1474@comtv.ru>
2010-07-29 20:54:35 +04:00
Richard Henderson
bf858897b7 linux-user: Re-use load_elf_image for the main binary.
This requires moving the PT_INTERP extraction and GUEST_BASE
handling into load_elf_image.  Key this off a non-null pointer
argument to receive the interpreter name.

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
8e62a71738 linux-user: Extract load_elf_image from load_elf_interp.
Moving toward a single copy of the elf binary loading code.
Fill in the details of the loaded image into a struct image_info.

Adjust create_elf_tables to read from such structures instead
of from a collection of passed arguments.  Don't return error
values from load_elf_interp; always exit(-1) with a message to
stderr.  Collect elf_interpreter handling in load_elf_binary
to a common spot.

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
b9329d4b53 linux-user: Remove partial support for a.out interpreters.
At the bottom of the a.out support was the unimplemented load_aout_interp
function.  There were other portions of the support that didn't look
right; when I went to look in the Linux kernel for clarification, I found
that the support for such interpreters has been removed from binfmt_elf.
There doesn't seem to be any reason to keep this broken support in qemu.

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
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