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: NCraig Heffner <cheffner@tacnetsol.com>
Signed-off-by: NRiku Voipio <riku.voipio@linaro.org>

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: NAlexander Graf <agraf@suse.de>
Reviewed-by: NRichard Henderson <rth@twiddle.net>

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: NTom Musta <tommusta@gmail.com>
Signed-off-by: NAlexander Graf <agraf@suse.de>

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: NDoug Kwan <dougkwan@google.com>
Signed-off-by: NTom Musta <tommusta@gmail.com>
Signed-off-by: NAlexander Graf <agraf@suse.de>

Implement the two-register SHA instruction group from the optional
Crypto Extensions.
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Message-id: 1401458125-27977-10-git-send-email-peter.maydell@linaro.org

Implement the AES instructions from the optional Crypto Extensions.
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Message-id: 1401458125-27977-8-git-send-email-peter.maydell@linaro.org

Implement the optional A64 CRC instructions.
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Message-id: 1401458125-27977-6-git-send-email-peter.maydell@linaro.org

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: NPeter Maydell <peter.maydell@linaro.org>

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: NArd Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Message-id: 1401386724-26529-4-git-send-email-peter.maydell@linaro.org

This adds support for the SHA1 and SHA256 instructions that are available
on some v8 implementations of Aarch32.
Signed-off-by: NArd Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: NPeter 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: NPeter Maydell <peter.maydell@linaro.org>

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: NPeter Maydell <peter.maydell@linaro.org>
Signed-off-by: NRiku Voipio <riku.voipio@linaro.org>

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: NPeter Maydell <peter.maydell@linaro.org>
Cc: qemu-stable@nongnu.org
Signed-off-by: NRiku Voipio <riku.voipio@linaro.org>

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: NPeter Maydell <peter.maydell@linaro.org>
Cc: qemu-stable@nongnu.org
Signed-off-by: NRiku Voipio <riku.voipio@linaro.org>

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: NPeter Maydell <peter.maydell@linaro.org>
Signed-off-by: NRiku Voipio <riku.voipio@linaro.org>

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: NJames Hogan <james.hogan@imgtec.com>
Cc: Riku Voipio <riku.voipio@iki.fi>
Cc: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: NRiku Voipio <riku.voipio@linaro.org>

Commit a07c67df (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: NJames Hogan <james.hogan@imgtec.com>
Cc: Riku Voipio <riku.voipio@iki.fi>
Cc: Paul Brook <paul@codesourcery.com>
Reviewed-by: NPeter Maydell <peter.maydell@linaro.org>
Signed-off-by: NRiku Voipio <riku.voipio@linaro.org>

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: NAmanieu d'Antras <amanieu@gmail.com>
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Signed-off-by: NRiku Voipio <riku.voipio@linaro.org>

Signed-off-by: NAndreas Färber <afaerber@suse.de>

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: NPeter Maydell <peter.maydell@linaro.org>
Signed-off-by: NRiku Voipio <riku.voipio@linaro.org>

The regs parameter is not used anywhere, so remove it.
Signed-off-by: NWill Newton <will.newton@linaro.org>
Reviewed-by: NErik de Castro Lopo <erikd@mega-nerd.com>
Reviewed-by: NAndreas Färber <afaerber@suse.de>
Signed-off-by: NRiku Voipio <riku.voipio@linaro.org>

This patch adds support for AArch64 in all the small corners of
linux-user (primarily in image loading and startup code).
Signed-off-by: NAlexander Graf <agraf@suse.de>
Signed-off-by: NJohn Rigby <john.rigby@linaro.org>
Signed-off-by: NPeter 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: NPeter Maydell <peter.maydell@linaro.org>

Introduce CPU_FOREACH(), CPU_FOREACH_SAFE() and CPU_NEXT() shorthand
macros.
Signed-off-by: NAndreas Färber <afaerber@suse.de>

Signed-off-by: NAndreas Färber <afaerber@suse.de>

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: NPaolo Bonzini <pbonzini@redhat.com>
[AF: Rebased, simplified cpu_copy()]
Signed-off-by: NAndreas Färber <afaerber@suse.de>

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: NEduardo Habkost <ehabkost@redhat.com>
Reviewed-by: NIgor Mammedov <imammedo@redhat.com>
Signed-off-by: NAndreas Färber <afaerber@suse.de>

The alignment is a characteristic of the ABI, not the CPU.
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: NEdgar E. Iglesias <edgar.iglesias@gmail.com>

The alignment is a characteristic of the ABI, not the CPU.
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: NEdgar E. Iglesias <edgar.iglesias@gmail.com>

The alignment is a characteristic of the ABI, not the CPU.
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: NEdgar E. Iglesias <edgar.iglesias@gmail.com>

Reviewed-by: NPeter Maydell <peter.maydell@redhat.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: NEdgar E. Iglesias <edgar.iglesias@gmail.com>

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: NPeter Maydell <peter.maydell@redhat.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: NEdgar E. Iglesias <edgar.iglesias@gmail.com>

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: NPeter Maydell <peter.maydell@redhat.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: NEdgar E. Iglesias <edgar.iglesias@gmail.com>

Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

Remove two uses of strdup (use g_path_get_basename instead),
and add a comment that this strncpy use is ok.
Reviewed-by: NPeter Maydell <peter.maydell@linaro.org>
Signed-off-by: NJim Meyering <meyering@redhat.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

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: NMeador Inge <meadori@codesourcery.com>
[PMM: Fixed minor whitespace errors.]
Reviewed-by: NPeter Maydell <peter.maydell@linaro.org>
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

Signed-off-by: NMeador Inge <meadori@codesourcery.com>
Reviewed-by: NPeter Maydell <peter.maydell@linaro.org>
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

Add QEMU OpenRISC linux user support.
Signed-off-by: NJia Liu <proljc@gmail.com>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

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: NPaul 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: NPeter Maydell <peter.maydell@linaro.org>
Signed-off-by: NRiku Voipio <riku.voipio@linaro.org>

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: NBenoit Canet <benoit.canet@gmail.com>
Signed-off-by: NRiku Voipio <riku.voipio@linaro.org>

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: NAndreas Färber <afaerber@suse.de>
Reviewed-by: NAnthony Liguori <aliguori@us.ibm.com>

In target-specific code use CPU*State.

While at it, fix indentation on those lines.
Signed-off-by: NAndreas Färber <afaerber@suse.de>