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| author | Till Straumann <strauman@slac.stanford.edu> | 2009-12-02 01:46:45 +0000 |
|---|---|---|
| committer | Till Straumann <strauman@slac.stanford.edu> | 2009-12-02 01:46:45 +0000 |
| commit | 6ce625ef5dabbdeca782a9f4bcf02b702bc31739 (patch) | |
| tree | 56e98640b80e63e92684239df2e2f3996ab8157e /c/src/lib/libbsp/powerpc/psim/start/start.S | |
| parent | 2009-12-01 Till Straumann <strauman@slac.stanford.edu> (diff) | |
| download | rtems-6ce625ef5dabbdeca782a9f4bcf02b702bc31739.tar.bz2 | |
2009-12-01 Till Straumann <strauman@slac.stanford.edu>
* Makefile.am, start/start.S: Added AltiVec support
(only effective if user modifies psim.cfg: CPU_CFLAGS
choosing a CPU architecture with AltiVec or directly
adding -maltivec, -mabi=altivec).
* start/start.S: removed '.file' statement which
confused gdb.
Diffstat (limited to 'c/src/lib/libbsp/powerpc/psim/start/start.S')
| -rw-r--r-- | c/src/lib/libbsp/powerpc/psim/start/start.S | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/c/src/lib/libbsp/powerpc/psim/start/start.S b/c/src/lib/libbsp/powerpc/psim/start/start.S index f28afd5cff..e8d42ccad0 100644 --- a/c/src/lib/libbsp/powerpc/psim/start/start.S +++ b/c/src/lib/libbsp/powerpc/psim/start/start.S @@ -22,7 +22,6 @@ #include <libcpu/io.h> #include "ppc-asm.h" - .file "startsim.s" .section ".got2","aw" .align 2 @@ -98,6 +97,22 @@ _start: mr sp,r0 /* use user defined stack */ .Lnostack: +#ifdef __ALTIVEC__ + /* enable altivec; this requires the ALTIVEC user + * extension to be installed in the user extension + * slot 0! + */ + mfmsr r0 + oris r0, r0, (1<<(31-16-6)) + mtmsr r0 + /* + * set vscr and vrsave to known values + */ + li r0, 0 + mtvrsave r0 + vxor 0,0,0 + mtvscr 0 +#endif /* set up initial stack frame */ addi sp,sp,-4 /* make sure we don't overwrite debug mem */ /* align */ |