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| author | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2014-05-14 10:28:09 +0200 |
|---|---|---|
| committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2014-05-14 14:46:20 +0200 |
| commit | 249eaf9991ef6d1d6f36223fee5cd3c12803ebdd (patch) | |
| tree | 1a1751a3b72f0b64f78e8773795a69aeaf756fe8 | |
| parent | bsps/sparc: Fix data copy in start procedure (diff) | |
| download | rtems-249eaf9991ef6d1d6f36223fee5cd3c12803ebdd.tar.bz2 | |
bsps/sparc: Fix BSS initialization
Use __bss_start available via %g2 to clear the BSS section. The usage
of _edata resulted in a copy of [_edata, __bss_start) from ROM to RAM
and then a clear to zero of this area.
Clear now only [__bss_start, _end).
| -rw-r--r-- | c/src/lib/libbsp/sparc/shared/start/start.S | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/c/src/lib/libbsp/sparc/shared/start/start.S b/c/src/lib/libbsp/sparc/shared/start/start.S index a1b3ff086b..65dd559376 100644 --- a/c/src/lib/libbsp/sparc/shared/start/start.S +++ b/c/src/lib/libbsp/sparc/shared/start/start.S @@ -344,8 +344,6 @@ copy_data: /* clear the bss */ 1: - sethi %hi(_edata),%g2 - or %g2,%lo(_edata),%g2 ! g2 = start of bss sethi %hi(_end),%g3 or %g3,%lo(_end),%g3 ! g3 = end of bss mov %g0,%g1 ! so std has two zeros |