qemu-e2k/linux-user
Laurent Vivier 7d6b1daedd linux-user, ppc: mftbl can be used by user application
In qemu-linux-user, when calling gethostbyname2(),
it was hanging in .__res_nmkquery.

(gdb) bt
0 in .__res_nmkquery () from /lib64/libresolv.so.2
1 in .__libc_res_nquery () from /lib64/libresolv.so.2
2 in .__libc_res_nsearch () from /lib64/libresolv.so.2
3 in ._nss_dns_gethostbyname3_r () from /lib64/libnss_dns.so.2
4 in ._nss_dns_gethostbyname2_r () from /lib64/libnss_dns.so.2
5 in .gethostbyname2_r () from /lib64/libc.so.6
6 in .gethostbyname2 () from /lib64/libc.so.6

.__res_nmkquery() is:

...
do { RANDOM_BITS (randombits); } while ((randombits & 0xffff) == 0);
...

<.__res_nmkquery+112>:	mftbl   r11
<.__res_nmkquery+116>:	clrlwi  r10,r11,16
<.__res_nmkquery+120>:	cmpwi   cr7,r10,0
<.__res_nmkquery+124>:	beq     cr7,<.__res_nmkquery+112>

but as mftbl (Move From Time Base Lower) is not implemented,
r11 is always 0, so we have an infinite loop.

This patch fills the Time Base register with cpu_get_real_ticks().

Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Alexander Graf <agraf@suse.de>
2015-07-07 17:44:49 +02:00
..
aarch64
alpha
arm linux-user/arm: Correct TARGET_NR_timerfd to TARGET_NR_timerfd_create 2015-05-18 17:45:10 +01:00
cris
i386
m68k
microblaze
mips
mips64
openrisc
ppc
s390x
sh4
sparc
sparc64
unicore32
x86_64
elfload.c linux-user: Use abi_ulong for TARGET_ELF_PAGESTART 2015-06-15 11:36:58 +03:00
errno_defs.h
flat.h
flatload.c
ioctls.h
linux_loop.h
linuxload.c
m68k-sim.c
main.c linux-user, ppc: mftbl can be used by user application 2015-07-07 17:44:49 +02:00
Makefile.objs
mmap.c translate-all: remove unnecessary argument to tb_invalidate_phys_range 2015-06-05 17:09:59 +02:00
qemu.h
signal.c s390x: Common access to floating point registers 2015-05-27 17:52:03 +02:00
socket.h
strace.c
strace.list
syscall_defs.h
syscall_types.h
syscall.c linux-user: ioctl() command type is int 2015-06-16 09:37:17 +03:00
target_flat.h
uaccess.c
uname.c
uname.h
vm86.c