Commit Graph

28 Commits

Author SHA1 Message Date
Tom Musta 6f6a40328b linux-user: Support target-to-host translation of mlockall argument
The argument to the mlockall system call is not necessarily the same on
all platforms and thus may require translation prior to passing to the
host.

For example, PowerPC 64 bit platforms define values for MCL_CURRENT
(0x2000) and MCL_FUTURE (0x4000) which are different from Intel platforms
(0x1 and 0x2, respectively)

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 0903c8be9e linux-user: Minimum Sig Handler Stack Size for PPC64 ELF V2
The ELF V2 ABI for PPC64 defines MINSIGSTKSZ as 4096 bytes whereas it was
2048 previously.

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
Petar Jovanovic d279279e2b target-mips: implement UserLocal Register
From MIPS documentation (Volume III):

UserLocal Register (CP0 Register 4, Select 2)
Compliance Level: Recommended.

The UserLocal register is a read-write register that is not interpreted by
the hardware and conditionally readable via the RDHWR instruction.

This register only exists if the Config3-ULRI register field is set.

Privileged software may write this register with arbitrary information and
make it accessible to unprivileged software via register 29 (ULR) of the
RDHWR instruction. To do so, bit 29 of the HWREna register must be set to a
1 to enable unprivileged access to the register.

Signed-off-by: Petar Jovanovic <petar.jovanovic@imgtec.com>
Reviewed-by: Andreas Färber <afaerber@suse.de>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2014-06-18 18:10:47 +02:00
Riku Voipio cbc14e6f28 linux-user: set minimum kernel version to 2.6.32
Popular glibc based distributions[1] require minimum
2.6.32 as kernel version. For some targets 2.6.18
would be enough, but dropping so low would mean some
suboptimal system calls could get used.

Set the minimum kernel advertized to 2.6.32 for
all architectures but aarch64 to ensure working qemu
linux-user in case host kernel is older.

[1] https://bugs.launchpad.net/ubuntu/+source/eglibc/+bug/921078

Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2014-03-10 13:55:00 +02:00
Riku Voipio 4fc4732047 linux-user: sync syscall numbers upto 3.13
All others updated except unicore, which doesn't look right to
begin with.

Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2014-02-18 16:45:55 +02:00
Petar Jovanovic 55a2b1631f linux-user: create target_structs header to place ipc_perm and shmid_ds
Creating target_structs header in linux-user/$arch/ and making
target_ipc_perm and target_shmid_ds its first inhabitants.
The struct defintions may/should be further fine-tuned by arch maintainers.

Signed-off-by: Petar Jovanovic <petar.jovanovic@imgtec.com>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2013-11-29 11:42:04 +02:00
Peter Maydell 4ce6243dc6 linux-user: Clean up handling of clone() argument order
Linux manages to have three separate orderings of the arguments to
the clone() syscall on different architectures. In the kernel these
are selected via CONFIG_CLONE_BACKWARDS and CONFIG_CLONE_BACKWARDS2.
Clean up our implementation of this to use similar #define names
rather than a TARGET_* ifdef ladder.

This includes behaviour changes fixing bugs on cris, x86-64, m68k,
openrisc and unicore32.  cris had explicit but wrong handling; the
others were just incorrectly using QEMU's default, which happened
to be the equivalent of CONFIG_CLONE_BACKWARDS. (unicore32 appears
to be broken in the mainline kernel in that it tries to use arg3 for
both parent_tidptr and newtls simultaneously -- we don't attempt
to emulate this bug...)

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2013-07-22 21:54:36 +03:00
Peter Maydell 6291ad77d7 linux-user: Move cpu_clone_regs() and cpu_set_tls() into linux-user
The functions cpu_clone_regs() and cpu_set_tls() are not purely CPU
related -- they are specific to the TLS ABI for a a particular OS.
Move them into the linux-user/ tree where they belong.

target-lm32 had entirely unused implementations, since it has no
linux-user target; just drop them.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Acked-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-09 21:20:28 +02:00
Peter Maydell d979e8eb54 linux-user: Add syscall numbers from kernel 2.6.39.2
Add syscall numbers for new syscall numbers; this brings us
into line with Linux 2.6.39.2.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2011-07-11 16:12:51 +03:00
Martin Mohring b2e7aab250 linux-user: fix mips and ppc to use UID16
Signed-off-by: Martin Mohring <martin.mohring@5edatasoft.com>
Signed-off-by: Jan-Simon Möller <jsmoeller@linuxfoundation.org>
Signed-off-by: Riku Voipio <riku.voipio@nokia.com>
2010-12-03 15:10:08 +02:00
Anthony Liguori c227f0995e Revert "Get rid of _t suffix"
In the very least, a change like this requires discussion on the list.

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

This reverts commit 99a0949b72.

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

Signed-off-by: malc <av1474@comtv.ru>
2009-10-01 22:45:02 +04:00
Riku Voipio 4b627a236a linux-user: update syscall list
In preparation for supporting pipe2()

Signed-off-by: Riku Voipio <riku.voipio@iki.fi>
2009-06-16 16:56:29 +03:00
pbrook 0b1bcb00fb MIPS signal handling fixes.
Also fixes a register corruption bug in do_sigreturn. When "returning"
from sigreturn we are actually restoring the virtual cpu state from the
signal frame.  This is actually surprisingly hard to observe in practice.

Typically an thread be blocked in a FUTEX_WAIT call when the signal arrives,
so the effect is a spurious syscall success and the introduction of a
subtle race condition.

On x86/arm a syscall modifies a single word sized register, so
do_sigreturn can just return that value.  On MIPS a syscall clobbers
multiple registers, so we need additional smarts.  My solution is to
invent a magic errno value that means "don't touch CPU state".


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@7194 c046a42c-6fe2-441c-8c8c-71466251a162
2009-04-21 01:41:10 +00:00
ths b5dc7732e1 More efficient target register / TC accesses.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4794 c046a42c-6fe2-441c-8c8c-71466251a162
2008-06-27 10:02:35 +00:00
ths d0dc7dc327 Make MIPS MT implementation more cache friendly.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3981 c046a42c-6fe2-441c-8c8c-71466251a162
2008-02-12 21:01:26 +00:00
blueswir1 992f48a036 Support for 32 bit ABI on 64 bit targets (only enabled Sparc64)
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3396 c046a42c-6fe2-441c-8c8c-71466251a162
2007-10-14 16:27:31 +00:00
ths 540635ba65 Code provision for n32/n64 mips userland emulation. Not functional yet.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3284 c046a42c-6fe2-441c-8c8c-71466251a162
2007-09-30 01:58:33 +00:00
ths 198a74de4c Move get_sp_from_cpustate from cpu.h to target_signal.h.
Enable sigaltstack processing for more architectures.


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3253 c046a42c-6fe2-441c-8c8c-71466251a162
2007-09-27 16:44:32 +00:00
ths a04e134ad1 linux-user sigaltstack() syscall, by Thayne Harbaugh.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3252 c046a42c-6fe2-441c-8c8c-71466251a162
2007-09-27 13:57:58 +00:00
ths b9a02beda2 Add new MIPS/Linux syscalls.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3214 c046a42c-6fe2-441c-8c8c-71466251a162
2007-09-23 18:07:05 +00:00
ths 2601c356b7 Correct and update mips termbits.h.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3213 c046a42c-6fe2-441c-8c8c-71466251a162
2007-09-23 17:55:00 +00:00
ths 637947f19d linux-user errno mapping, by Stuart Anderson.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2908 c046a42c-6fe2-441c-8c8c-71466251a162
2007-06-01 12:09:19 +00:00
ths 388bb21af6 MIPS linux-user update.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2810 c046a42c-6fe2-441c-8c8c-71466251a162
2007-05-13 13:58:00 +00:00
ths 6f5b89a07c MIPS Userland TLS register emulation, by Daniel Jacobowitz.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2465 c046a42c-6fe2-441c-8c8c-71466251a162
2007-03-02 20:48:00 +00:00
bellard c960bde13c correct ioctls
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1679 c046a42c-6fe2-441c-8c8c-71466251a162
2005-11-28 22:28:16 +00:00
bellard 148f50581b uid32 syscalls
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1678 c046a42c-6fe2-441c-8c8c-71466251a162
2005-11-28 22:28:07 +00:00
bellard 048f6b4df7 mips user emulation
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1668 c046a42c-6fe2-441c-8c8c-71466251a162
2005-11-26 18:47:20 +00:00