Re: [Qemu-devel] [PATCH] SH4 Fix missing 6th arg of syscall.

[Tomoyoshi ASANO]

Hello,

I tested big-endian binaries by sh4(eb)-linux-user 
with a small patch(attached) for building sh4eb-linux-user.
But I don't understand that this patch is needed or not.

sh4eb-linux-user is OK using static link binaries.

But I feel that sh4eb-linux-users has some problem(?)
using dynamic link binaries.

1) If host-os has /etc/ld.so.cache, sh4eb-linux-users is NG.

address@hidden ~] qemu-sh4eb -strace /usr/qemu-sh4eb/bin/busybox
28575 uname(0x4007f818) = 0
28575 brk(0,132617,1074264468,57,1074325300,4096) = 0x00487000
28575 access("/etc/ld.so.preload",04) = -1 errno=2 (No such file or 
directory)
28575 open("/etc/ld.so.cache",0,01) = 3
28575 fstat64(3,0x4007f234) = 0
28575 mmap(0,66277,1,2,3,0) = 0x42081000
28575 close(3) = 0
Unhandled trap: 0xa0
pc=0x400870d0 sr=0x00008001 pr=0x40086e32 fpscr=0x00080000
r0=0x00000348 r1=0xb61a0ff4 r2=0x2a2c1010 r3=0x0000000c
r4=0x400a4000 r5=0x40092afc r6=0x0000000b r7=0x00000002
r8=0x7411fff4 r9=0x000102e5 r10=0x1f017fff r11=0x17dd02d5
r12=0x400a4000 r13=0x3e02ffff r14=0x4007f2b0 r15=0x4007f2b0
r16=0x00000000 r17=0x00000000 r18=0x00000000 r19=0x00000000
r20=0x00000000 r21=0x00000000 r22=0x00000000 r23=0x00000000

But if no /etc/ld.so.cache in host-os, sh4eb-linux-users is OK.

2) If host-os has /lib/tls/*, sh4eb-linux-users is NG.

address@hidden ~] qemu-sh4eb -strace /usr/qemu-sh4eb/bin/busybox
28580 uname(0x4007f818) = 0
28580 brk(0,132617,1074264468,57,1074325300,4096) = 0x00487000
28580 access("/etc/ld.so.preload",04) = -1 errno=2 (No such file or 
directory)
28580 open("/etc/ld.so.cache",0,01) = -1 errno=2 (No such file or 
directory)
28580 open("/lib/tls/libm.so.6",0,012) = 3
28580 read(3,0x4007f308,512) = 512
28580 close(3) = 0
28580 writev(2,0x4007efb8,0xa)/usr/qemu-sh4eb/bin/busybox: error 
while loading shared libraries: /lib/tls/libm.so.6: ELF file data
encoding not big-endian
 = 125
28580 exit_group(127)

But if no /lib/tls in host-os, sh4eb-linux-users is OK.

please help if possible.

Thanks,
--

On Wed, 21 Nov 2007 10:43:49 +0900
Tomoyoshi ASANO <address@hidden> wrote:

> Hell,
> 
> This is very nice!
> 
> I tested using glibc-2.5
> It seems good.
> 
> Thank you
> 
> On Wed, 21 Nov 2007 09:24:41 +0900
> "Magnus Damm" <address@hidden> wrote:
> 
> > Hi there,
> > 
> > On Nov 20, 2007 11:48 PM,  <address@hidden> wrote:
> > > I found 6th arg for syscall is missing on SH4 linux-user emulation.
> > > This seems to be the cause of shared library mapping failure.
> > > I successfully run shared-lib'd binary, after applying following fix.
> > 
> > Hehe, I managed to create the exact same patch yesterday evening. So
> > this email is just to acknowledge this fix. Dynamically linked
> > binaries using uclibc-0.9.29 or glibc-2.3.6 both work well. Thank you.
> > 
> > / magnus
> > 
>

qemu-snapshot-sh4eb.patch
Description: Binary data