Re: [Qemu-devel] qemu on Fedora Core 3 (Linux 2.6.9+), glibc-2.3.3

[Hetz Ben Hamo <hetzbh@gmail.com>]

Could you please re-send your patch, diffed, as an attachment please?

Thanks,
Hetz


On Sat, 18 Dec 2004 21:11:00 -0800, John Reiser <jreiser@bitwagon.com> wrote:
> In order to run qemu-snapshot-2004-12-17_23.tar.bz2 on:
>     Fedora Core 3  kernel-2.6.8-1.681_FC3  i686
>     gcc (GCC) 3.4.2 20041017 (Red Hat 3.4.2-6.fc3)
>     glibc-2.3.3
>     binutils-2.15.92.0.2-5
> I had to use the extra file and patch below.
> Otherwise I got very early SIGSEGVs.
> 
> -----__restore.S  [append __restore.o to VL_OBJS in i386/Makefile]
> #include <asm/unistd.h>
> 
> __restore: .globl __restore
>         pop %eax
>         movl $ __NR_sigreturn,%eax
>         int $0x80
> 
> __restore_rt: .globl __restore_rt
>         movl $ __NR_rt_sigreturn,%eax
>         int $0x80
> -----
> 
> --- vl.c.orig   2004-12-12 14:20:04.000000000 -0800
> +++ vl.c        2004-12-18 20:53:09.496799856 -0800
> @@ -882,6 +882,9 @@
> 
> #endif /* !defined(_WIN32) */
> 
> +extern void __restore(void);
> +extern void __restore_rt(void);
> +
> static void init_timers(void)
> {
>      rt_clock = qemu_new_clock(QEMU_TIMER_REALTIME);
> @@ -913,7 +916,9 @@
>          sigfillset(&act.sa_mask);
>          act.sa_flags = 0;
> #if defined (TARGET_I386) && defined(USE_CODE_COPY)
> -        act.sa_flags |= SA_ONSTACK;
> +#define SA_RESTORER   0x04000000
> +        act.sa_flags |= SA_ONSTACK | SA_RESTORER;
> +       act.sa_restorer = __restore;
> #endif
>          act.sa_handler = host_alarm_handler;
>          sigaction(SIGALRM, &act, NULL);
> @@ -3402,7 +3407,8 @@
>          sigfillset(&act.sa_mask);
>          act.sa_flags = SA_SIGINFO;
> #if defined (TARGET_I386) && defined(USE_CODE_COPY)
> -        act.sa_flags |= SA_ONSTACK;
> +        act.sa_flags |= SA_ONSTACK | SA_RESTORER;
> +       act.sa_restorer = __restore_rt;
> #endif
>          act.sa_sigaction = host_segv_handler;
>          sigaction(SIGSEGV, &act, NULL);
> 
> --
> 
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