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Diffstat (limited to 'libgloss/sparc_leon/etrap.S')
| -rw-r--r-- | libgloss/sparc_leon/etrap.S | 113 |
1 files changed, 0 insertions, 113 deletions
diff --git a/libgloss/sparc_leon/etrap.S b/libgloss/sparc_leon/etrap.S deleted file mode 100644 index 7c4fe17d3..000000000 --- a/libgloss/sparc_leon/etrap.S +++ /dev/null @@ -1,113 +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/leonstack.h> -#include <asm-leon/winmacros.h> - -/* Registers to not touch at all. */ -#define t_psr l0 /* Set by caller */ -#define t_pc l1 /* Set by caller */ -#define t_npc l2 /* Set by caller */ -#define t_wim l3 /* Set by caller */ -#define t_twinmask l4 /* Set at beginning of this entry routine. */ -#define t_kstack l5 /* Set right before pt_regs frame is built */ -#define t_retpc l6 /* If you change this, change winmacro.h header file */ -#define t_systable l7 /* Never touch this, could be the syscall table ptr. */ -#define curptr g6 /* Set after pt_regs frame is built */ - - /* Number of register windows */ - .global _nwindows_min1, _nwindows - - .text - .align 4 - .globl leonbare_trapsetup - -leonbare_trapsetup: - -#ifdef _FLAT - restore - RW_STORE(sp) - save -#endif - -#ifndef _SOFT_FLOAT - /* build a pt_regs trap frame. */ - sub %fp, (SF_REGS_SZ + PT_REGS_SZ + FW_REGS_SZ), %t_kstack - PT_STORE_ALL(t_kstack, t_psr, t_pc, t_npc, g2) - - /* build a fp_regs trap frame. */ - sethi %hi(fpustate_current), %g2 - ld [%g2+%lo(fpustate_current)], %g3 - st %g3,[%t_kstack + (SF_REGS_SZ + PT_REGS_SZ + FW_REGS_SZ - 4)] - add %t_kstack,SF_REGS_SZ + PT_REGS_SZ,%g3 - st %g3, [%g2+%lo(fpustate_current)] - -#else - /* build a pt_regs trap frame. - */ - sub %fp, (SF_REGS_SZ + PT_REGS_SZ), %t_kstack - PT_STORE_ALL(t_kstack, t_psr, t_pc, t_npc, g2) -#endif - - -#ifndef _FLAT - /* See if we are in the trap window. */ - mov 1, %t_twinmask - sll %t_twinmask, %t_psr, %t_twinmask ! t_twinmask = (1 << psr) - andcc %t_twinmask, %t_wim, %g0 - beq 1f ! in trap window, clean up - nop - - /*-------------------------------------------------*/ - /* Spill , adjust %wim and go. */ - srl %t_wim, 0x1, %g2 ! begin computation of new %wim - - sethi %hi(_nwindows_min1), %g3 - ld [%g3+%lo(_nwindows_min1)], %g3 - - sll %t_wim, %g3, %t_wim ! NWINDOWS-1 - or %t_wim, %g2, %g2 - and %g2, 0xff, %g2 - - save %g0, %g0, %g0 ! get in window to be saved - - /* Set new %wim value */ - wr %g2, 0x0, %wim - - /* Save the kernel window onto the corresponding stack. */ - RW_STORE(sp) - - restore %g0, %g0, %g0 - /*-------------------------------------------------*/ - -1: -#endif - /* Trap from kernel with a window available. - * Just do it... - */ - jmpl %t_retpc + 0x8, %g0 ! return to caller - mov %t_kstack, %sp ! jump onto new stack - - |