diff options
Diffstat (limited to 'bsps/sparc64/shared/helenos/boot/sparc64/loader/ofwasm.S')
| -rw-r--r-- | bsps/sparc64/shared/helenos/boot/sparc64/loader/ofwasm.S | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/bsps/sparc64/shared/helenos/boot/sparc64/loader/ofwasm.S b/bsps/sparc64/shared/helenos/boot/sparc64/loader/ofwasm.S new file mode 100644 index 0000000000..4956175131 --- /dev/null +++ b/bsps/sparc64/shared/helenos/boot/sparc64/loader/ofwasm.S @@ -0,0 +1,62 @@ +# +# Copyright (c) 2006 Martin Decky +# Copyright (c) 2006 Jakub Jermar +# All rights reserved. +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions +# are met: +# +# - Redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer. +# - Redistributions in binary form must reproduce the above copyright +# notice, this list of conditions and the following disclaimer in the +# documentation and/or other materials provided with the distribution. +# - The name of the author may not be used to endorse or promote products +# derived from this software without specific prior written permission. +# +# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR +# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES +# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. +# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, +# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF +# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +# + +/* + * This code is originally in asm.S. This is the only function used from that + * file, so it has been relocated to this new file ofw.S which is not actually + * located in the HelenOS code base. + */ + +#include <arch/stack.h> +#include <boot/register.h> + +.register %g2, #scratch +.register %g3, #scratch + +.text + +.global ofw +ofw: + save %sp, -STACK_WINDOW_SAVE_AREA_SIZE, %sp + set ofw_cif, %l0 + ldx [%l0], %l0 + + rdpr %pstate, %l1 + and %l1, ~PSTATE_AM_BIT, %l2 + wrpr %l2, 0, %pstate + + jmpl %l0, %o7 + mov %i0, %o0 + + clr %g4 ! correction for gcc's ABI change + + wrpr %l1, 0, %pstate + + ret + restore %o0, 0, %o0 |