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Diffstat (limited to 'libgloss/sparc_leon/regwin.S')
| -rw-r--r-- | libgloss/sparc_leon/regwin.S | 134 |
1 files changed, 0 insertions, 134 deletions
diff --git a/libgloss/sparc_leon/regwin.S b/libgloss/sparc_leon/regwin.S deleted file mode 100644 index a9c18f944..000000000 --- a/libgloss/sparc_leon/regwin.S +++ /dev/null @@ -1,134 +0,0 @@ -/* - * 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/leon.h> -#include <asm-leon/leonstack.h> -#include <asm-leon/asmmacro.h> - - .seg "text" - - -/* Number of register windows */ - .global _nwindows_min1, _nwindows - - ! Window overflow trap handler on save. - ! Touches %g1 - /* ------- */ - .weak _window_overflow - .set _window_overflow,__window_overflow - .weak _window_overflow_svt - .set _window_overflow_svt,__window_overflow_svt - /* ------- */ - !.global _window_overflow,_window_overflow_svt - .global __window_overflow_rettseq,__window_overflow_rettseq_ret,__window_overflow_slow1 - -__window_overflow_svt: -__window_overflow: -#ifndef _FLAT -__window_overflow_rettseq: - mov %wim, %l3 ! Calculate next WIM - mov %g1, %l7 - srl %l3, 1, %g1 -__window_overflow_rettseq_ret: - sethi %hi(_nwindows_min1), %l4 ! NWINDOWS-1 - ld [%l4+%lo(_nwindows_min1)], %l4 - - sll %l3, %l4 , %l4 - or %l4, %g1, %g1 - - save ! Get into window to be saved. - mov %g1, %wim - nop; nop; nop - std %l0, [%sp + 0]; - std %l2, [%sp + 8]; - std %l4, [%sp + 16]; - std %l6, [%sp + 24]; - std %i0, [%sp + 32]; - std %i2, [%sp + 40]; - std %i4, [%sp + 48]; - std %i6, [%sp + 56]; - restore ! Go back to trap window. - mov %l7, %g1 - - jmp %l1 ! Re-execute save. - rett %l2 - nop - -__window_overflow_slow1: ! space for possible stackcheck patch - nop - nop -#else - ta 0 ! halt -__window_overflow_rettseq: -__window_overflow_rettseq_ret: -__window_overflow_slow1: - nop - nop - nop -#endif - - /* Window underflow trap handler on restore. */ - - ! Touches %g1 - /* ------- */ - .weak _window_underflow - .set _window_underflow,__window_underflow - .weak _window_underflow_svt - .set _window_underflow_svt,__window_underflow_svt - /* ------- */ - !.global _window_underflow,_window_underflow_svt - -__window_underflow_svt: -__window_underflow: -#ifndef _FLAT - mov %wim, %l3 ! Calculate next WIM - sll %l3, 1, %l4 - - sethi %hi(_nwindows_min1), %l5 ! NWINDOWS-1 - ld [%l5+%lo(_nwindows_min1)], %l5 - - srl %l3, %l5, %l5 - or %l5, %l4, %l5 - mov %l5, %wim - nop; nop; nop - restore ! Two restores to get into the - restore ! window to restore - ldd [%sp + 0], %l0; ! Restore window from the stack - ldd [%sp + 8], %l2; - ldd [%sp + 16], %l4; - ldd [%sp + 24], %l6; - ldd [%sp + 32], %i0; - ldd [%sp + 40], %i2; - ldd [%sp + 48], %i4; - ldd [%sp + 56], %i6; - save ! Get back to the trap window. - save - jmp %l1 ! Re-execute restore. - rett %l2 -#else - ta 0 ! halt -#endif - - |