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| author | Till Straumann <strauman@slac.stanford.edu> | 2011-07-28 19:27:58 +0000 |
|---|---|---|
| committer | Till Straumann <strauman@slac.stanford.edu> | 2011-07-28 19:27:58 +0000 |
| commit | 6963b2e71378bbe1163835f160277ed483577045 (patch) | |
| tree | 1ef661410933e983b8881ae68a5b112fb846c9e1 | |
| parent | 2011-27-28 Till Straumann <strauman@slac.stanford.edu> (diff) | |
| download | rtems-6963b2e71378bbe1163835f160277ed483577045.tar.bz2 | |
2011-27-28 Till Straumann <strauman@slac.stanford.edu>
* start/start.S: Tag TOS with a NULL pointer
(help terminate when walking the stack).
| -rw-r--r-- | c/src/lib/libbsp/powerpc/mvme3100/ChangeLog | 5 | ||||
| -rw-r--r-- | c/src/lib/libbsp/powerpc/mvme3100/start/start.S | 5 | ||||
| -rw-r--r-- | c/src/lib/libbsp/powerpc/mvme5500/ChangeLog | 5 | ||||
| -rw-r--r-- | c/src/lib/libbsp/powerpc/mvme5500/start/start.S | 10 |
4 files changed, 21 insertions, 4 deletions
diff --git a/c/src/lib/libbsp/powerpc/mvme3100/ChangeLog b/c/src/lib/libbsp/powerpc/mvme3100/ChangeLog index b8480f2b80..0f36f732c7 100644 --- a/c/src/lib/libbsp/powerpc/mvme3100/ChangeLog +++ b/c/src/lib/libbsp/powerpc/mvme3100/ChangeLog @@ -1,3 +1,8 @@ +2011-27-28 Till Straumann <strauman@slac.stanford.edu> + + * start/start.S: Tag TOS with a NULL pointer + (help terminate when walking the stack). + 2011-06-11 Joel Sherrill <joel.sherrill@oarcorp.com> * Makefile.am: Remove reference to wrapup directory. diff --git a/c/src/lib/libbsp/powerpc/mvme3100/start/start.S b/c/src/lib/libbsp/powerpc/mvme3100/start/start.S index 2e616b9eb4..2c44867a30 100644 --- a/c/src/lib/libbsp/powerpc/mvme3100/start/start.S +++ b/c/src/lib/libbsp/powerpc/mvme3100/start/start.S @@ -78,6 +78,11 @@ __rtems_entry_point: /* align down to 16-bytes */ li r5, (CPU_STACK_ALIGNMENT - 1) andc r1, r9, r5 + + /* NULL ptr to back chain */ + li r0, 0 + stw r0, 0(r1) + /* * We are now in a environment that is totally independent from * bootloader setup. diff --git a/c/src/lib/libbsp/powerpc/mvme5500/ChangeLog b/c/src/lib/libbsp/powerpc/mvme5500/ChangeLog index 2e3eff58ad..cb3ef4c0a2 100644 --- a/c/src/lib/libbsp/powerpc/mvme5500/ChangeLog +++ b/c/src/lib/libbsp/powerpc/mvme5500/ChangeLog @@ -1,3 +1,8 @@ +2011-27-28 Till Straumann <strauman@slac.stanford.edu> + + * start/start.S: Tag TOS with a NULL pointer + (help terminate when walking the stack). + 2011-07-13 Joel Sherrill <joel.sherrilL@OARcorp.com> PR 1824/cpukit diff --git a/c/src/lib/libbsp/powerpc/mvme5500/start/start.S b/c/src/lib/libbsp/powerpc/mvme5500/start/start.S index 2d79e0699d..21ec7f03ac 100644 --- a/c/src/lib/libbsp/powerpc/mvme5500/start/start.S +++ b/c/src/lib/libbsp/powerpc/mvme5500/start/start.S @@ -10,11 +10,7 @@ * found in the file LICENSE in this distribution or at * http://www.rtems.com/license/LICENSE. * -<<<<<<< start.S * $Id$ -======= - * $Id$ ->>>>>>> 1.25 * */ @@ -152,6 +148,12 @@ enter_C_code: li r0, (CPU_STACK_ALIGNMENT-1) andc r1, r9, r0 /* + * NULL ptr to back chain + */ + li r0, 0 + stw r0, 0(r1) + + /* * We are now in a environment that is totally independent from * bootloader setup. */ |