diff options
Diffstat (limited to 'libgloss/sparc_leon/locore_clean.S')
| -rw-r--r-- | libgloss/sparc_leon/locore_clean.S | 114 |
1 files changed, 114 insertions, 0 deletions
diff --git a/libgloss/sparc_leon/locore_clean.S b/libgloss/sparc_leon/locore_clean.S new file mode 100644 index 000000000..6a2df85a8 --- /dev/null +++ b/libgloss/sparc_leon/locore_clean.S @@ -0,0 +1,114 @@ +/* + * Copyright (c) 2011 Aeroflex Gaisler + * + * BSD license: + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + + +#include <asm-leon/head.h> + + .section .text + /* ------- */ + .weak _cleanregs_custom_weak + .set _cleanregs_custom_weak,_cleanregs_donothing + /* ------- */ + .global _cleanregs_libgloss + + +_cleanregs_donothing: +_cleanregs_libgloss: + retl + nop + + +#define NUMREGWINDOWS 8 + +//_cleanregs_libgloss: + +!'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''' +! initialize regs with values +//#define REGINIT +#ifdef REGINIT + + mov %psr, %g3 + mov %wim, %g4 + mov %sp, %g5 + mov %fp, %g6 + mov %o7, %g7 + mov %g0, %wim + set 0, %g1 + andn %g3,0x1f,%l0 + mov %l0,%psr + nop; nop; nop + +3: set 0x0001,%i0 + set 0x0101,%i1 + set 0x0201,%i2 + set 0x0301,%i3 + set 0x0401,%i4 + set 0x0501,%i5 + set 0x0601,%i6 + set 0x0701,%i7 + set 0x0801,%l0 + set 0x0901,%l1 + set 0x1001,%l2 + set 0x1101,%l3 + set 0x1201,%l4 + set 0x1301,%l5 + set 0x1401,%l6 + set 0x1501,%l7 + or %g1,%i0,%i0 + or %g1,%i1,%i1 + or %g1,%i2,%i2 + or %g1,%i3,%i3 + or %g1,%i4,%i4 + or %g1,%i5,%i5 + or %g1,%i6,%i6 + or %g1,%i7,%i7 + or %g1,%l0,%l0 + or %g1,%l1,%l1 + or %g1,%l2,%l2 + or %g1,%l3,%l3 + or %g1,%l4,%l4 + or %g1,%l5,%l5 + or %g1,%l6,%l6 + or %g1,%l7,%l7 + restore + set 0x10000,%g2 + add %g1,%g2,%g1 + set NUMREGWINDOWS*0x10000,%g2 + cmp %g1,%g2 + bne 3b + nop + + mov %g4,%wim + nop; nop; nop; + mov %g3,%psr + nop; nop; nop; + mov %g5, %sp + mov %g6, %fp + +#endif +!'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''' + + jmpl %g7+8,%g0 + nop + |