[Qemu-devel] qemu/linux-user main.c

[Qemu-devel] qemu/linux-user main.c

[Fabrice Bellard]

CVSROOT:	/cvsroot/qemu
Module name:	qemu
Branch: 	
Changes by:	Fabrice Bellard <bellard@savannah.gnu.org>	05/02/15 22:54:53

Modified files:
	linux-user     : main.c 

Log message:
	sparc sigsegv support

CVSWeb URLs:
http://savannah.gnu.org/cgi-bin/viewcvs/qemu/qemu/linux-user/main.c.diff?tr1=1.59&tr2=1.60&r1=text&r2=text

[Qemu-devel] qemu/linux-user main.c

[Fabrice Bellard]

CVSROOT:	/cvsroot/qemu
Module name:	qemu
Branch: 	
Changes by:	Fabrice Bellard <bellard@savannah.gnu.org>	05/02/19 17:25:31

Modified files:
	linux-user     : main.c 

Log message:
	fixed handling of sparc register window exceptions

CVSWeb URLs:
http://savannah.gnu.org/cgi-bin/viewcvs/qemu/qemu/linux-user/main.c.diff?tr1=1.60&tr2=1.61&r1=text&r2=text

[Qemu-devel] qemu/linux-user main.c

[Fabrice Bellard]

CVSROOT:	/cvsroot/qemu
Module name:	qemu
Branch: 	
Changes by:	Fabrice Bellard <bellard@savannah.gnu.org>	05/03/13 16:56:51

Modified files:
	linux-user     : main.c 

Log message:
	fpu init fix

CVSWeb URLs:
http://savannah.gnu.org/cgi-bin/viewcvs/qemu/qemu/linux-user/main.c.diff?tr1=1.61&tr2=1.62&r1=text&r2=text

[Qemu-devel] qemu/linux-user main.c

[Fabrice Bellard]

CVSROOT:	/cvsroot/qemu
Module name:	qemu
Branch: 	
Changes by:	Fabrice Bellard <bellard@savannah.gnu.org>	05/04/23 18:01:57

Modified files:
	linux-user     : main.c 

Log message:
	ARM syscall fix (Paul Brook)

CVSWeb URLs:
http://savannah.gnu.org/cgi-bin/viewcvs/qemu/qemu/linux-user/main.c.diff?tr1=1.63&tr2=1.64&r1=text&r2=text

[Qemu-devel] qemu/linux-user main.c

[Fabrice Bellard]

CVSROOT:	/cvsroot/qemu
Module name:	qemu
Branch: 	
Changes by:	Fabrice Bellard <bellard@savannah.gnu.org>	05/10/30 21:01:05

Modified files:
	linux-user     : main.c 

Log message:
	User-mode gdbserver port number (Paul Brook)

CVSWeb URLs:
http://savannah.gnu.org/cgi-bin/viewcvs/qemu/qemu/linux-user/main.c.diff?tr1=1.70&tr2=1.71&r1=text&r2=text

[Qemu-devel] qemu/linux-user main.c

[Fabrice Bellard]

CVSROOT:	/cvsroot/qemu
Module name:	qemu
Branch: 	
Changes by:	Fabrice Bellard <bellard@savannah.gnu.org>	05/11/21 23:30:27

Modified files:
	linux-user     : main.c 

Log message:
	cpu_single_env usage fix

CVSWeb URLs:
http://savannah.gnu.org/cgi-bin/viewcvs/qemu/qemu/linux-user/main.c.diff?tr1=1.71&tr2=1.72&r1=text&r2=text

[Qemu-devel] qemu/linux-user main.c

[Fabrice Bellard]

CVSROOT:	/cvsroot/qemu
Module name:	qemu
Branch: 	
Changes by:	Fabrice Bellard <bellard@savannah.gnu.org>	05/12/05 21:04:25

Modified files:
	linux-user     : main.c 

Log message:
	handle coprocessor exceptions

CVSWeb URLs:
http://savannah.gnu.org/cgi-bin/viewcvs/qemu/qemu/linux-user/main.c.diff?tr1=1.75&tr2=1.76&r1=text&r2=text

[Qemu-devel] qemu/linux-user main.c

[Fabrice Bellard]

CVSROOT:	/sources/qemu
Module name:	qemu
Changes by:	Fabrice Bellard <bellard>	06/06/14 13:37:55

Modified files:
	linux-user     : main.c 

Log message:
	MIPS FPU support in linux user emulation

CVSWeb URLs:
http://cvs.savannah.gnu.org/viewcvs/qemu/linux-user/main.c?cvsroot=qemu&r1=1.84&r2=1.85

Patches:
Index: main.c
===================================================================
RCS file: /sources/qemu/qemu/linux-user/main.c,v
retrieving revision 1.84
retrieving revision 1.85
diff -u -b -r1.84 -r1.85
--- main.c	11 Jun 2006 13:32:59 -0000	1.84
+++ main.c	14 Jun 2006 13:37:55 -0000	1.85
@@ -1327,7 +1327,6 @@
                                      arg5, 
                                      arg6);
                 }
-                fail:
                 env->PC += 4;
                 if ((unsigned int)ret >= (unsigned int)(-1133)) {
                     env->gpr[7] = 1; /* error flag */
@@ -1342,40 +1341,11 @@
             break;
         case EXCP_CpU:
         case EXCP_RI:
-            {
-                uint32_t insn, op;
-
-                insn = tget32(env->PC);
-                op = insn >> 26;
-                //                printf("insn=%08x op=%02x\n", insn, op);
-                /* XXX: totally dummy FP ops just to be able to launch
-                   a few executables */
-                switch(op) {
-                case 0x31: /* LWC1 */
-                    env->PC += 4;
-                    break;
-                case 0x39: /* SWC1 */
-                    env->PC += 4;
-                    break;
-                case 0x11:
-                    switch((insn >> 21) & 0x1f) {
-                    case 0x02: /* CFC1 */
-                        env->PC += 4;
-                        break;
-                    default:
-                        goto sigill;
-                    }
-                    break;
-                default:
-                sigill:
                     info.si_signo = TARGET_SIGILL;
                     info.si_errno = 0;
                     info.si_code = 0;
                     queue_signal(info.si_signo, &info);
                     break;
-                }
-            }
-            break;
         default:
             //        error:
             fprintf(stderr, "qemu: unhandled CPU exception 0x%x - aborting\n", 
@@ -1700,6 +1670,9 @@
             env->gpr[i] = regs->regs[i];
         }
         env->PC = regs->cp0_epc;
+#ifdef MIPS_USES_FPU
+        env->CP0_Status |= (1 << CP0St_CU1);
+#endif
     }
 #elif defined(TARGET_SH4)
     {

[Qemu-devel] qemu/linux-user main.c

[Fabrice Bellard]

CVSROOT:	/sources/qemu
Module name:	qemu
Changes by:	Fabrice Bellard <bellard>	06/09/24 18:48:23

Modified files:
	linux-user     : main.c 

Log message:
	added cpu_smm_update()

CVSWeb URLs:
http://cvs.savannah.gnu.org/viewcvs/qemu/linux-user/main.c?cvsroot=qemu&r1=1.92&r2=1.93

[Qemu-devel] qemu/linux-user main.c

[Fabrice Bellard]

CVSROOT:	/sources/qemu
Module name:	qemu
Changes by:	Fabrice Bellard <bellard>	06/10/23 21:31:01

Modified files:
	linux-user     : main.c 

Log message:
	sparc64 syscall fix (Blue Swirl)

CVSWeb URLs:
http://cvs.savannah.gnu.org/viewcvs/qemu/linux-user/main.c?cvsroot=qemu&r1=1.94&r2=1.95

[Qemu-devel] qemu/linux-user main.c

[Paul Brook]

CVSROOT:	/sources/qemu
Module name:	qemu
Changes by:	Paul Brook <pbrook>	06/11/04 16:46:29

Modified files:
	linux-user     : main.c 

Log message:
	MIPS usermode debug exceptions (Dave Denholm).

CVSWeb URLs:
http://cvs.savannah.gnu.org/viewcvs/qemu/linux-user/main.c?cvsroot=qemu&r1=1.95&r2=1.96

[Qemu-devel] qemu/linux-user main.c

[Jocelyn Mayer]

CVSROOT:	/sources/qemu
Module name:	qemu
Changes by:	Jocelyn Mayer <j_mayer>	07/03/19 08:08:28

Modified files:
	linux-user     : main.c 

Log message:
	Add -cpu option for linux user emulation.
	Only usable for PowerPC and ARM for now.

CVSWeb URLs:
http://cvs.savannah.gnu.org/viewcvs/qemu/linux-user/main.c?cvsroot=qemu&r1=1.102&r2=1.103

[Qemu-devel] qemu/linux-user main.c

[Thiemo Seufer]

CVSROOT:	/sources/qemu
Module name:	qemu
Changes by:	Thiemo Seufer <ths>	07/03/19 12:16:29

Modified files:
	linux-user     : main.c 

Log message:
	Support -cpu selection for mips usermode emulation. Fix segfault when
	dispaying the -cpu list help.

CVSWeb URLs:
http://cvs.savannah.gnu.org/viewcvs/qemu/linux-user/main.c?cvsroot=qemu&r1=1.103&r2=1.104

Re: [Qemu-devel] qemu/linux-user main.c

[J. Mayer]

On Mon, 2007-03-19 at 12:16 +0000, Thiemo Seufer wrote:
> CVSROOT:	/sources/qemu
> Module name:	qemu
> Changes by:	Thiemo Seufer <ths>	07/03/19 12:16:29
> 
> Modified files:
> 	linux-user     : main.c 
> 
> Log message:
> 	Support -cpu selection for mips usermode emulation. Fix segfault when
> 	dispaying the -cpu list help.

Could you tell more about the segfault ?
exit is used at many other places without any problem and furthermore I
did not experiment any crash while testing the PowerPC target with the
initial patch, so ? (I'd really like to understand...)

-- 
J. Mayer <l_indien@magic.fr>
Never organized

Re: [Qemu-devel] qemu/linux-user main.c

[Thiemo Seufer]

J. Mayer wrote:
> On Mon, 2007-03-19 at 12:16 +0000, Thiemo Seufer wrote:
> > CVSROOT:	/sources/qemu
> > Module name:	qemu
> > Changes by:	Thiemo Seufer <ths>	07/03/19 12:16:29
> > 
> > Modified files:
> > 	linux-user     : main.c 
> > 
> > Log message:
> > 	Support -cpu selection for mips usermode emulation. Fix segfault when
> > 	dispaying the -cpu list help.
> 
> Could you tell more about the segfault ?

It segfaulted for me (on ppc/linux) after printing the help list.

> exit is used at many other places without any problem and furthermore I
> did not experiment any crash while testing the PowerPC target with the
> initial patch, so ? (I'd really like to understand...)

I didn't really debug it, but I noticed the other branch in the
conditional uses _exit() instead of exit(). With that change, the
segfault disappeared. I figure we have an atexit/on_exit call somwhere
which tries to use data which isn't initialized at that point.


Thiemo

Re: [Qemu-devel] qemu/linux-user main.c

[Pierre Palatin]

[-- Attachment #1: Type: text/plain, Size: 1634 bytes --]

On Monday 19 March 2007 21:13:12 Thiemo Seufer wrote:
> J. Mayer wrote:
> > On Mon, 2007-03-19 at 12:16 +0000, Thiemo Seufer wrote:
> > > CVSROOT:	/sources/qemu
> > > Module name:	qemu
> > > Changes by:	Thiemo Seufer <ths>	07/03/19 12:16:29
> > >
> > > Modified files:
> > > 	linux-user     : main.c
> > >
> > > Log message:
> > > 	Support -cpu selection for mips usermode emulation. Fix segfault when
> > > 	dispaying the -cpu list help.
> >
> > Could you tell more about the segfault ?
>
> It segfaulted for me (on ppc/linux) after printing the help list.
>
> > exit is used at many other places without any problem and furthermore I
> > did not experiment any crash while testing the PowerPC target with the
> > initial patch, so ? (I'd really like to understand...)
>
> I didn't really debug it, but I noticed the other branch in the
> conditional uses _exit() instead of exit(). With that change, the
> segfault disappeared. I figure we have an atexit/on_exit call somwhere
> which tries to use data which isn't initialized at that point.

Maybe that's related to the problem i've got (in 
http://lists.gnu.org/archive/html/qemu-devel/2007-03/msg00110.html ).
There is some piece of code in main.c which mess around libc initialization & 
exit and were making my qemu-i386 segfault really early. It seems it was 
designed to avoid a bug in some versions of glibc.
I attach the simple patch I've made to avoid that. 
It may need adjustements since I don't know enough about libc internals on 
initialization to be sure that's the correct fix - I would be deeply 
interested in some input/comments on this problem.

Pierre Palatin

[-- Attachment #2: init-segfault.patch --]
[-- Type: text/x-diff, Size: 584 bytes --]

Index: linux-user/main.c
===================================================================
--- linux-user/main.c	(révision 527)
+++ linux-user/main.c	(copie de travail)
@@ -44,7 +44,7 @@
 
 /* for recent libc, we add these dummy symbols which are not declared
    when generating a linked object (bug in ld ?) */
-#if (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 3)) && !defined(CONFIG_STATIC)
+#if (__GLIBC__ == 2 && __GLIBC_MINOR__ == 3) && !defined(CONFIG_STATIC)
 long __preinit_array_start[0];
 long __preinit_array_end[0];
 long __init_array_start[0];

Re: [Qemu-devel] qemu/linux-user main.c

[Thiemo Seufer]

Pierre Palatin wrote:
> On Monday 19 March 2007 21:13:12 Thiemo Seufer wrote:
> > J. Mayer wrote:
> > > On Mon, 2007-03-19 at 12:16 +0000, Thiemo Seufer wrote:
> > > > CVSROOT:	/sources/qemu
> > > > Module name:	qemu
> > > > Changes by:	Thiemo Seufer <ths>	07/03/19 12:16:29
> > > >
> > > > Modified files:
> > > > 	linux-user     : main.c
> > > >
> > > > Log message:
> > > > 	Support -cpu selection for mips usermode emulation. Fix segfault when
> > > > 	dispaying the -cpu list help.
> > >
> > > Could you tell more about the segfault ?
> >
> > It segfaulted for me (on ppc/linux) after printing the help list.
> >
> > > exit is used at many other places without any problem and furthermore I
> > > did not experiment any crash while testing the PowerPC target with the
> > > initial patch, so ? (I'd really like to understand...)
> >
> > I didn't really debug it, but I noticed the other branch in the
> > conditional uses _exit() instead of exit(). With that change, the
> > segfault disappeared. I figure we have an atexit/on_exit call somwhere
> > which tries to use data which isn't initialized at that point.
> 
> Maybe that's related to the problem i've got (in 
> http://lists.gnu.org/archive/html/qemu-devel/2007-03/msg00110.html ).
>
> There is some piece of code in main.c which mess around libc initialization & 
> exit and were making my qemu-i386 segfault really early. It seems it was 
> designed to avoid a bug in some versions of glibc.
> I attach the simple patch I've made to avoid that. 
> It may need adjustements since I don't know enough about libc internals on 
> initialization to be sure that's the correct fix - I would be deeply 
> interested in some input/comments on this problem.
> 
> Pierre Palatin

> Index: linux-user/main.c
> ===================================================================
> --- linux-user/main.c	(révision 527)
> +++ linux-user/main.c	(copie de travail)
> @@ -44,7 +44,7 @@
>  
>  /* for recent libc, we add these dummy symbols which are not declared
>     when generating a linked object (bug in ld ?) */
> -#if (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 3)) && !defined(CONFIG_STATIC)
> +#if (__GLIBC__ == 2 && __GLIBC_MINOR__ == 3) && !defined(CONFIG_STATIC)
>  long __preinit_array_start[0];
>  long __preinit_array_end[0];
>  long __init_array_start[0];

binutils' ld had a bug a while ago, this looks like a workaround for it
(which means the check for glibc is wrong, and there's no easy way to
do it right).

Commenting out that code made no difference to me.


Thiemo

[Qemu-devel] qemu/linux-user main.c

[Blue Swirl]

CVSROOT:	/cvsroot/qemu
Module name:	qemu
Changes by:	Blue Swirl <blueswir1>	07/04/08 06:29:06

Modified files:
	linux-user     : main.c

Log message:
	Sparc32/64 CPU selection for user emulator

CVSWeb URLs:
http://cvs.savannah.gnu.org/viewcvs/qemu/linux-user/main.c?cvsroot=qemu&r1=1.106&r2=1.107

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[Qemu-devel] qemu/linux-user main.c

[Thiemo Seufer]

CVSROOT:	/sources/qemu
Module name:	qemu
Changes by:	Thiemo Seufer <ths>	07/06/01 23:50:45

Modified files:
	linux-user     : main.c 

Log message:
	Delete leftover Status FPU flag check.

CVSWeb URLs:
http://cvs.savannah.gnu.org/viewcvs/qemu/linux-user/main.c?cvsroot=qemu&r1=1.113&r2=1.114

[Qemu-devel] qemu/linux-user main.c

[Thiemo Seufer]

CVSROOT:	/sources/qemu
Module name:	qemu
Changes by:	Thiemo Seufer <ths>	07/06/17 16:38:40

Modified files:
	linux-user     : main.c 

Log message:
	Option to drop LD_PRELOAD from emulated environment, by Lauri Leukkunen.

CVSWeb URLs:
http://cvs.savannah.gnu.org/viewcvs/qemu/linux-user/main.c?cvsroot=qemu&r1=1.114&r2=1.115

[Qemu-devel] qemu/linux-user main.c

[Thiemo Seufer]

CVSROOT:	/sources/qemu
Module name:	qemu
Changes by:	Thiemo Seufer <ths>	07/06/21 22:55:02

Modified files:
	linux-user     : main.c 

Log message:
	Hack to keep wine happy, by Alexander Graf.

CVSWeb URLs:
http://cvs.savannah.gnu.org/viewcvs/qemu/linux-user/main.c?cvsroot=qemu&r1=1.115&r2=1.116

[Qemu-devel] qemu/linux-user main.c

[Thiemo Seufer]

CVSROOT:	/sources/qemu
Module name:	qemu
Changes by:	Thiemo Seufer <ths>	07/06/27 11:12:42

Modified files:
	linux-user     : main.c 

Log message:
	Fix environ termination, by Andreas Schwab.

CVSWeb URLs:
http://cvs.savannah.gnu.org/viewcvs/qemu/linux-user/main.c?cvsroot=qemu&r1=1.116&r2=1.117

[Qemu-devel] qemu/linux-user main.c

[Blue Swirl]

CVSROOT:	/cvsroot/qemu
Module name:	qemu
Changes by:	Blue Swirl <blueswir1>	07/07/07 20:46:41

Modified files:
	linux-user     : main.c 

Log message:
	 Deliver page faults to program

CVSWeb URLs:
http://cvs.savannah.gnu.org/viewcvs/qemu/linux-user/main.c?cvsroot=qemu&r1=1.117&r2=1.118

[Qemu-devel] qemu/linux-user main.c

[Jocelyn Mayer]

CVSROOT:	/sources/qemu
Module name:	qemu
Changes by:	Jocelyn Mayer <j_mayer>	07/11/03 13:22:08

Modified files:
	linux-user     : main.c 

Log message:
	Fix incorrect PowerPC instruction fetch exception dump.

CVSWeb URLs:
http://cvs.savannah.gnu.org/viewcvs/qemu/linux-user/main.c?cvsroot=qemu&r1=1.139&r2=1.140

[Qemu-devel] qemu/linux-user main.c

[Fabrice Bellard]

CVSROOT:	/sources/qemu
Module name:	qemu
Changes by:	Fabrice Bellard <bellard>	07/11/08 13:56:19

Modified files:
	linux-user     : main.c 

Log message:
	added -cpu option for x86 - fixed glibc hack in case the global variables are moved

CVSWeb URLs:
http://cvs.savannah.gnu.org/viewcvs/qemu/linux-user/main.c?cvsroot=qemu&r1=1.140&r2=1.141

[Qemu-devel] qemu/linux-user main.c

[Fabrice Bellard]

CVSROOT:	/sources/qemu
Module name:	qemu
Changes by:	Fabrice Bellard <bellard>	07/11/08 14:01:49

Modified files:
	linux-user     : main.c 

Log message:
	removed unused code

CVSWeb URLs:
http://cvs.savannah.gnu.org/viewcvs/qemu/linux-user/main.c?cvsroot=qemu&r1=1.141&r2=1.142

[Qemu-devel] qemu/linux-user main.c

[Fabrice Bellard]

CVSROOT:	/sources/qemu
Module name:	qemu
Changes by:	Fabrice Bellard <bellard>	07/11/11 14:46:06

Modified files:
	linux-user     : main.c 

Log message:
	-strace option

CVSWeb URLs:
http://cvs.savannah.gnu.org/viewcvs/qemu/linux-user/main.c?cvsroot=qemu&r1=1.145&r2=1.146

[Qemu-devel] qemu/linux-user main.c

[Fabrice Bellard]

CVSROOT:	/sources/qemu
Module name:	qemu
Changes by:	Fabrice Bellard <bellard>	07/11/11 17:22:48

Modified files:
	linux-user     : main.c 

Log message:
	printf format fixes

CVSWeb URLs:
http://cvs.savannah.gnu.org/viewcvs/qemu/linux-user/main.c?cvsroot=qemu&r1=1.146&r2=1.147

[Qemu-devel] qemu/linux-user main.c

[Fabrice Bellard]

CVSROOT:	/sources/qemu
Module name:	qemu
Changes by:	Fabrice Bellard <bellard>	07/11/11 19:32:53

Modified files:
	linux-user     : main.c 

Log message:
	sparc64_[get|set]_context are not meaningful in abi32 mode 

CVSWeb URLs:
http://cvs.savannah.gnu.org/viewcvs/qemu/linux-user/main.c?cvsroot=qemu&r1=1.147&r2=1.148

[Qemu-devel] qemu/linux-user main.c

[Fabrice Bellard]

CVSROOT:	/sources/qemu
Module name:	qemu
Changes by:	Fabrice Bellard <bellard>	07/11/15 15:27:03

Modified files:
	linux-user     : main.c 

Log message:
	x86_64 fixes

CVSWeb URLs:
http://cvs.savannah.gnu.org/viewcvs/qemu/linux-user/main.c?cvsroot=qemu&r1=1.151&r2=1.152

[Qemu-devel] qemu/linux-user main.c

[Fabrice Bellard]

CVSROOT:	/sources/qemu
Module name:	qemu
Changes by:	Fabrice Bellard <bellard>	07/11/15 15:37:50

Modified files:
	linux-user     : main.c 

Log message:
	force correct ppc64 cpu

CVSWeb URLs:
http://cvs.savannah.gnu.org/viewcvs/qemu/linux-user/main.c?cvsroot=qemu&r1=1.152&r2=1.153

[Qemu-devel] qemu/linux-user main.c

[Thiemo Seufer]

CVSROOT:	/sources/qemu
Module name:	qemu
Changes by:	Thiemo Seufer <ths>	07/11/20 15:22:45

Modified files:
	linux-user     : main.c 

Log message:
	SH4 Fix missing 6th arg of syscall, by "takasi-y".

CVSWeb URLs:
http://cvs.savannah.gnu.org/viewcvs/qemu/linux-user/main.c?cvsroot=qemu&r1=1.155&r2=1.156

[Qemu-devel] qemu/linux-user main.c

[Thiemo Seufer]

CVSROOT:	/sources/qemu
Module name:	qemu
Changes by:	Thiemo Seufer <ths>	08/01/08 14:39:44

Modified files:
	linux-user     : main.c 

Log message:
	Fix section switching buglet, by Edgar E. Iglesias.

CVSWeb URLs:
http://cvs.savannah.gnu.org/viewcvs/qemu/linux-user/main.c?cvsroot=qemu&r1=1.159&r2=1.160

[Qemu-devel] qemu/linux-user main.c

[Paul Brook]

CVSROOT:	/sources/qemu
Module name:	qemu
Changes by:	Paul Brook <pbrook>	08/03/26 22:40:25

Modified files:
	linux-user     : main.c 

Log message:
	Revert accidental commit.

CVSWeb URLs:
http://cvs.savannah.gnu.org/viewcvs/qemu/linux-user/main.c?cvsroot=qemu&r1=1.165&r2=1.166