diff options
Diffstat (limited to 'libgloss/sparc_leon/regwin_patch.c')
-rw-r--r-- | libgloss/sparc_leon/regwin_patch.c | 82 |
1 files changed, 0 insertions, 82 deletions
diff --git a/libgloss/sparc_leon/regwin_patch.c b/libgloss/sparc_leon/regwin_patch.c deleted file mode 100644 index 319403e04..000000000 --- a/libgloss/sparc_leon/regwin_patch.c +++ /dev/null @@ -1,82 +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> - -extern volatile unsigned int __window_overflow_rettseq[3]; -extern volatile unsigned int __window_overflow_slow1[2]; - -static unsigned int installed = 0; -static unsigned int save__window_overflow_rettseq[3]; - -int -install_winoverflow_hook (void (*func) (void)) -{ - if (installed) - { - return 0; - } - if (!installed) - { - /* - a7 50 00 00 rd %wim, %l3 - ae 10 00 01 mov %g1, %l7 - 83 34 e0 01 srl %l3, 1, %g1 - - 81 c4 40 00 jmp %l1 - 81 cc 80 00 rett %l2 */ - save__window_overflow_rettseq[0] = __window_overflow_rettseq[0]; - save__window_overflow_rettseq[1] = __window_overflow_rettseq[1]; - save__window_overflow_rettseq[2] = __window_overflow_rettseq[2]; - - /*29 10 00 31 sethi %hi(0x4000c400), %l4 - 81 c5 22 48 jmp %l4 + 0x248 - 01 00 00 00 nop */ - - __window_overflow_rettseq[0] = ((((unsigned int) func) >> 10) & 0x3fffff) | 0x29000000; /* upper 22 */ - __window_overflow_rettseq[1] = ((((unsigned int) func)) & 0x03ff) | 0x81c52000; /* lower 10 */ - __window_overflow_rettseq[2] = 0x01000000; /* nop */ - - sparc_leon23_icache_flush (); - installed = 1; - } - return 0; -} - -void -uninstall_winoverflow_hook () -{ - if (installed) - { - __window_overflow_rettseq[0] = save__window_overflow_rettseq[0]; - __window_overflow_rettseq[1] = save__window_overflow_rettseq[1]; - __window_overflow_rettseq[2] = save__window_overflow_rettseq[2]; - - sparc_leon23_icache_flush (); - installed = 0; - } -} |