Jeff
Yes! That fixed it. So the asm was just getting compiled out ?
thanks!
shalbh
From: Jeff Dike <[EMAIL PROTECTED]>
To: S A <[EMAIL PROTECTED]>
CC: [email protected]
Subject: Re: [uml-user] unable to get login prompt with
CONFIG_FRAME_POINTER & x86_64
Date: Mon, 10 Apr 2006 16:23:55 -0400
On Mon, Apr 10, 2006 at 06:58:27PM +0000, S A wrote:
> Sorry for the late reply. I have uploaded the linux UML binary to
> the following link:
Can you see if this patch helps?
Index: linux-2.6.16-mm/arch/um/sys-x86_64/stub_segv.c
===================================================================
--- linux-2.6.16-mm.orig/arch/um/sys-x86_64/stub_segv.c
+++ linux-2.6.16-mm/arch/um/sys-x86_64/stub_segv.c
@@ -33,7 +33,7 @@ stub_segv_handler(int sig)
struct ucontext *uc;
int pid;
- __asm__("movq %%rdx, %0" : "=g" (uc) :);
+ __asm__ __volatile__("movq %%rdx, %0" : "=g" (uc) :);
GET_FAULTINFO_FROM_SC(*((struct faultinfo *) UML_CONFIG_STUB_DATA),
&uc->uc_mcontext);
@@ -44,8 +44,8 @@ stub_segv_handler(int sig)
* the signal frame. So, we use the ucontext pointer, which we know
* already, to get the signal frame pointer, and add 8 to that.
*/
- __asm__("movq %0, %%rsp; movq %1, %%rax ; syscall": :
- "g" ((unsigned long) container_of(uc, struct rt_sigframe,
- uc) + 8),
- "g" (__NR_rt_sigreturn));
+ __asm__ __volatile__("movq %0, %%rsp; movq %1, %%rax ; syscall": :
+ "g" ((unsigned long)
+ container_of(uc, struct rt_sigframe, uc)
+ 8),
+ "g" (__NR_rt_sigreturn));
}
Index: linux-2.6.16-mm/arch/um/sys-i386/stub_segv.c
===================================================================
--- linux-2.6.16-mm.orig/arch/um/sys-i386/stub_segv.c
+++ linux-2.6.16-mm/arch/um/sys-i386/stub_segv.c
@@ -27,6 +27,6 @@ stub_segv_handler(int sig)
* the stack in its original form when we do the sigreturn here, by
* hand.
*/
- __asm__("mov %0,%%esp ; movl %1, %%eax ; "
- "int $0x80" : : "a" (sc), "g" (__NR_sigreturn));
+ __asm__ __volatile__("mov %0,%%esp ; movl %1, %%eax ; "
+ "int $0x80" : : "a" (sc), "g"
(__NR_sigreturn));
}
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