This is the mail archive of the
newlib@sourceware.org
mailing list for the newlib project.
Re: Patch: clear BSS and register _fini for moxie port
- From: Anthony Green <green at moxielogic dot com>
- To: newlib at sourceware dot org
- Date: Wed, 01 Jul 2009 07:46:18 -0400
- Subject: Re: Patch: clear BSS and register _fini for moxie port
- References: <1241963006.6842.10.camel@localhost.localdomain>
I finally checked this in today.
AG
On Sun, 2009-05-10 at 06:43 -0700, Anthony Green wrote:
> I'm checking in the following patch. It simply clears BSS in crt0, and
> registers _fini with atexit in order to call static destructors and the
> like.
>
> AG
>
>
> 2009-05-10 Anthony Green <green@moxielogic.com>
>
> * moxie/crt0.S (_start): Clear BSS at startup. Register _fini()
> with atexit().
> * moxie/sim-open.S: Fix comment.
>
>
> Index: libgloss/moxie/crt0.S
> ===================================================================
> RCS file: /cvs/src/src/libgloss/moxie/crt0.S,v
> retrieving revision 1.1
> diff -u -r1.1 crt0.S
> --- libgloss/moxie/crt0.S 22 Apr 2009 19:48:07 -0000 1.1
> +++ libgloss/moxie/crt0.S 10 May 2009 04:09:36 -0000
> @@ -1,6 +1,6 @@
> /* crt0.S -- startup file for moxie
> *
> - * Copyright (c) 2008 Anthony Green
> + * Copyright (c) 2008, 2009 Anthony Green
> *
> * The authors hereby grant permission to use, copy, modify,
> distribute,
> * and license this software and its documentation for any purpose,
> provided
> @@ -23,12 +23,22 @@
> ldi.l $fp, 0x0 /* zero fp to allow unwinders to stop */
>
> /* zero the bss area */
> - /* TODO */
> - /* call memset */
> + dec $sp, 12
> + ldi.l $r0, __bss_start__
> + ldi.l $r1, __bss_end__
> + sub.l $r1, $r0
> + sto.l 8($sp), $r1
> + ldi.l $r1, 0
> + jsra memset
> + inc $sp, 12
>
> - /* Call _init to invoke static constructors, etc. */
> + /* Call _init to invoke static constructors, etc. */
> jsra _init
>
> + /* Call _fini at exit time for static destructors. */
> + ldi.l $r0, _fini
> + jsra atexit
> +
> /* Set argc and argv. These are populated by the simulator. */
> lda.l $r0, 0x4
> ldi.l $r1, 0x8
> Index: libgloss/moxie/sim-open.S
> ===================================================================
> RCS file: /cvs/src/src/libgloss/moxie/sim-open.S,v
> retrieving revision 1.1
> diff -u -r1.1 sim-open.S
> --- libgloss/moxie/sim-open.S 22 Apr 2009 19:48:07 -0000 1.1
> +++ libgloss/moxie/sim-open.S 10 May 2009 04:09:36 -0000
> @@ -1,5 +1,5 @@
> /*
> - * sim-open.S -- open interface for frv simulator
> + * sim-open.S -- open interface for moxie simulator
> *
>
>