diff options
| author | Daniel Hellstrom <daniel@gaisler.com> | 2016-03-17 09:12:19 +0100 |
|---|---|---|
| committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2016-03-24 07:41:01 +0100 |
| commit | 33de2037f6007f6adf90514dbc98158a473476fc (patch) | |
| tree | 36caee6704bfa5c22bfa60606d316b46a63da803 /c/src/lib/libbsp/sparc | |
| parent | Filesystem: Export most generic path eval function (diff) | |
| download | rtems-33de2037f6007f6adf90514dbc98158a473476fc.tar.bz2 | |
sparc: Fix window underflow trap handler
The window underflow trap handler used %i5 which destroyed the %o5 of
the calling context. Bug introduced by
0d3b5d47429effb350448d9e9123a67db722109f.
Go back to the pre 0d3b5d47429effb350448d9e9123a67db722109f behaviour
and use the two unused instructions in the trap vector to optimize a
bit.
Close #2651.
Diffstat (limited to 'c/src/lib/libbsp/sparc')
| -rw-r--r-- | c/src/lib/libbsp/sparc/shared/start/start.S | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/c/src/lib/libbsp/sparc/shared/start/start.S b/c/src/lib/libbsp/sparc/shared/start/start.S index f38fe8cb99..3d621fdcea 100644 --- a/c/src/lib/libbsp/sparc/shared/start/start.S +++ b/c/src/lib/libbsp/sparc/shared/start/start.S @@ -66,7 +66,7 @@ mov %wim, %l3 ; \ sethi %hi(_handler), %l4 ; \ jmp %l4+%lo(_handler); \ - mov %g0, %wim ! WIM = 0, so that we can restore regardless of WIM + sll %l3, 1, %l4 ! l4 = WIM << 1 /* * Software trap. Treat as BAD_TRAP for the time being... |