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Peter Maydell d7749ab770 linux-user: Set r14 on exit from microblaze syscall 
All syscall exits on microblaze result in r14 being equal to the
PC we return to, because the kernel syscall exit instruction "rtbd"
does this. (This is true even for sigreturn(); note that r14 is
not a userspace-usable register as the kernel may clobber it at
any point.)

Emulate the setting of r14 on exit; this isn't really a guest
visible change for valid guest code because r14 isn't reliably
observable anyway. However having the code and the comment helps
to explain why it's ok for the ERESTARTSYS handling not to undo
the changes to r14 that happen on syscall entry.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2016-05-27 14:49:50 +03:00
..
aarch64 linux-user: remove unavailable syscalls from aarch64 2016-02-23 21:25:10 +02:00
alpha linux-user: Support for restarting system calls for Alpha targets 2016-05-27 14:49:50 +03:00
arm linux-user: Support for restarting system calls for ARM targets 2016-05-27 14:49:49 +03:00
cris linux-user: Support for restarting system calls for CRIS targets 2016-05-27 14:49:50 +03:00
i386 linux-user: correct timerfd_create syscall numbers 2016-02-23 21:25:10 +02:00
m68k linux-user: Support for restarting system calls for M68K targets 2016-05-27 14:49:50 +03:00
microblaze linux-user: sync syscall numbers with kernel 2016-02-23 21:25:10 +02:00
mips linux-user: Support for restarting system calls for MIPS targets 2016-05-27 14:49:49 +03:00
mips64 linux-user: Support for restarting system calls for MIPS targets 2016-05-27 14:49:49 +03:00
openrisc linux-user: Support for restarting system calls for OpenRISC targets 2016-05-27 14:49:50 +03:00
ppc linux-user: Support for restarting system calls for PPC targets 2016-05-27 14:49:49 +03:00
s390x linux-user: Support for restarting system calls for S390 targets 2016-05-27 14:49:50 +03:00
sh4 linux-user: Support for restarting system calls for SH4 targets 2016-05-27 14:49:49 +03:00
sparc linux-user: Support for restarting system calls for SPARC targets 2016-05-27 14:49:49 +03:00
sparc64 linux-user: Support for restarting system calls for SPARC targets 2016-05-27 14:49:49 +03:00
tilegx linux-user: Support for restarting system calls for tilegx targets 2016-05-27 14:49:50 +03:00
unicore32 build: [linux-user] Rename "syscall.h" to "target_syscall.h" in target directories 2016-02-23 21:25:09 +02:00
x86_64 linux-user: correct timerfd_create syscall numbers 2016-02-23 21:25:10 +02:00
elfload.c util: move declarations out of qemu-common.h 2016-03-22 22:20:17 +01:00
errno_defs.h linux-user: Renumber TARGET_QEMU_ESIGRETURN, make it not arch-specific 2016-05-27 14:49:49 +03:00
flat.h Support for 32 bit ABI on 64 bit targets (only enabled Sparc64) 2007-10-14 16:27:31 +00:00
flatload.c osdep: add wrappers for socket functions 2016-03-10 17:19:07 +00:00
ioctls.h linux-user: Convert blkpg to use a special subop handler 2014-10-06 21:52:45 +03:00
linux_loop.h Fix build failure with old kernel headers (loop.h is incompatible with 2008-05-23 16:06:43 +00:00
linuxload.c linux-user: Clean up includes 2016-01-29 15:07:22 +00:00
m68k-sim.c linux-user: Clean up includes 2016-01-29 15:07:22 +00:00
main.c linux-user: Set r14 on exit from microblaze syscall 2016-05-27 14:49:50 +03:00
Makefile.objs linux-user: rename cpu-uname -> uname 2014-05-02 21:59:36 +03:00
mmap.c linux-user: Clean up includes 2016-01-29 15:07:22 +00:00
qemu.h cpu: move exec-all.h inclusion out of cpu.h 2016-05-19 16:42:29 +02:00
signal.c linux-user: Support for restarting system calls for tilegx targets 2016-05-27 14:49:50 +03:00
socket.h linux-user: support SO_PASSSEC setsockopt option 2014-06-29 14:19:59 +03:00
strace.c linux-user: Clean up includes 2016-01-29 15:07:22 +00:00
strace.list linux-user: add setns and unshare 2014-08-22 15:06:34 +03:00
syscall.c linux-user: Support for restarting system calls for x86 targets 2016-05-27 14:49:49 +03:00
syscall_defs.h linux-user: Add SOCKOP_sendmmsg and SOCKOP_recvmmsg socket call, wire them up. 2016-01-11 14:54:03 +02:00
syscall_types.h linux-user: Convert blkpg to use a special subop handler 2014-10-06 21:52:45 +03:00
target_flat.h linux-user/FLAT: allow targets to override FLAT processing 2011-02-09 10:33:54 +02:00
uaccess.c util: move declarations out of qemu-common.h 2016-03-22 22:20:17 +01:00
uname.c linux-user: Clean up includes 2016-01-29 15:07:22 +00:00
uname.h linux-user: move uname functions to uname.c 2014-05-02 21:59:36 +03:00
vm86.c linux-user: Clean up includes 2016-01-29 15:07:22 +00:00