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path: root/libgloss/sparc_leon/regwinflush.S
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Diffstat (limited to 'libgloss/sparc_leon/regwinflush.S')
-rw-r--r--libgloss/sparc_leon/regwinflush.S285
1 files changed, 0 insertions, 285 deletions
diff --git a/libgloss/sparc_leon/regwinflush.S b/libgloss/sparc_leon/regwinflush.S
deleted file mode 100644
index b21454c98..000000000
--- a/libgloss/sparc_leon/regwinflush.S
+++ /dev/null
@@ -1,285 +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 "data"
- .global _lb_spillglobals, _lb_issideflush
- .align 4
-_lb_spillglobals:
- .word 0
- .word 0
- .word 0
- .word 0
- .word 0
- .word 0
- .word 0
-_lb_issideflush:
- .word 0 /* off: 28 */
-
- .seg "text"
-
-/* =============================================== */
-
-#define _SV save %sp, -SF_REGS_SZ, %sp
-#define _RS restore
-
- /* ------- */
- .weak _flush_windows
- .set _flush_windows,__flush_windows
- .weak _flush_windows_svt
- .set _flush_windows_svt,__flush_windows_svt
- /* ------- */
- !.global _flush_windows,_flush_windows_svt
-__flush_windows_svt:
- rd %wim, %l3
-
-__flush_windows:
- SAVE_ALL
-
-#ifndef _FLAT
-
- set _lb_issideflush, %l3
- st %l0, [%l3] /* mark as inside flush */
-
- wr %l0, SPARC_PSR_ET_MASK, %psr
- nop; nop; nop
-
- _SV; _SV; _SV; _SV; _SV; _SV; _SV;
- _RS; _RS; _RS; _RS; _RS; _RS; _RS;
-
- set _lb_issideflush, %l3
- st %g0, [%l3] /* mark as outside flush */
-
- /* Advance over the trap instruction. */
- ld [%sp + SF_REGS_SZ + PT_NPC], %l1
- add %l1, 0x4, %l2
- st %l1, [%sp + SF_REGS_SZ + PT_PC]
- st %l2, [%sp + SF_REGS_SZ + PT_NPC]
-#endif
-
- RESTORE_ALL
-
-/* =============================================== */
-
-_irqcall_flush_windows:
-#ifndef _FLAT
- set _lb_spillglobals,%l4
- st %g1,[%l4+0]
- st %g4,[%l4+4]
- st %l0,[%l4+16]
- st %l1,[%l4+20]
- st %l2,[%l4+24]
- st %l4,[%l4+28] /* mark as inside flush */
-
- restore
-
- mov %psr, %g1
- or %g1, SPARC_PSR_PIL_MASK, %g1
- wr %g1, SPARC_PSR_ET_MASK, %psr /* disable irq, enable traps */
- nop
- nop
- nop
-
- sethi %hi(_nwindows_min1), %g4 /* flush registers */
- ld [%g4+%lo(_nwindows_min1)], %g4
-1: save /* NWINDOWS-1 times */
- sub %g4,1,%g4
-
- /*****************/
- andncc %g4,0xff,%g0
- be .lab1
- nop
- nop
-
-.lab1: /*****************/
-
- cmp %g4,%g0
- bne 1b
- nop
-
- sethi %hi(_nwindows_min1), %g4
- ld [%g4+%lo(_nwindows_min1)], %g4
-2: restore /* NWINDOWS-1 times */
-
- /*****************/
- andncc %g4,0xff,%g0
- be .lab2
- nop
- nop
-
-.lab2: /*****************/
-
- sub %g4,1,%g4
- cmp %g4,%g0
- bne 2b
- nop
-
- save
-
- set _lb_spillglobals,%l4
- ld [%l4+4], %g4
- ld [%l4+0], %g1
- ld [%l4+16],%l0
- ld [%l4+20],%l1
- ld [%l4+24],%l2
- st %g0,[%l4+28] /* clean inside flush mark */
-
-#endif
-
- wr %l0, 0, %psr /* restore psr */
- nop
- nop
- nop
-
- jmpl %l2, %g0
- rett %l2 + 4
-
-/* =============================================== */
-
- /* ------- */
- .weak _irqcall_disableirq
- .set _irqcall_disableirq,__irqcall_disableirq
- .weak _irqcall_disableirq_svt
- .set _irqcall_disableirq_svt,__irqcall_disableirq_svt
- /* ------- */
-
-__irqcall_disableirq:
-__irqcall_disableirq_svt:
- or %l0, SPARC_PSR_PIL_MASK, %l0
- mov %l0, %psr
- nop; nop; nop
- jmpl %l2, %g0
- rett %l2 + 4
-
-/* =============================================== */
-
- /*
- * system call (ta 0x2):
- * 2: irq_disable:
- * o1 = 2
- * 3: irq_enable:
- * o0 = old_flags
- * o1 = 3
- * 4: enter supervisor mode (from user mode):
- * o1 = 4
- * 5: enter user mode:
- * o1 = 5
- * 6: flush windows
- *
- * On entry:
- *
- * l0 = psr (from trap table)
- * l1 = pc
- * l2 = npc
- * i0 = system call id
- */
-
- /* ------- */
- .weak _irqcall
- .set _irqcall,__irqcall
- .weak _irqcall_svt
- .set _irqcall_svt,__irqcall_svt
- /* ------- */
- !.global _irqcall,_irqcall_svt
-__irqcall_svt:
-__irqcall:
-
- subcc %i1, 2, %g0 ! syscall 2, disable interrupts
- bne 3f
- or %l0, 0x0f00, %l4 ! set PIL=15
- mov %l4, %psr
- or %l0, SPARC_PSR_ET_MASK, %i0 ! return old psr with ET=1
- ba,a 9f
-3:
- subcc %i1, 3, %g0 ! syscall 3, enable interrupts
- bne 4f
- and %i0, SPARC_PSR_PIL_MASK, %l4
- andn %l0, SPARC_PSR_PIL_MASK, %l5
- or %l5, %l4, %l4
- mov %l4, %psr
- ba,a 9f
-4:
- subcc %i1, 4, %g0 ! syscall 4, enter supervisor
- bne 5f
-
- mov %psr, %l4
- or %l4,SPARC_PSR_PS_MASK,%l4
- mov %l4, %psr ! set previous supervisor %psr
- nop; nop; nop
- ba,a 9f
-
-5:
- subcc %i1, 5, %g0 ! syscall 5, enter user
- bne 6f
-
- mov %psr, %l4
- andn %l4,SPARC_PSR_PS_MASK,%l4
- mov %l4, %psr ! clear previous supervisor %psr, return to user mode
- nop; nop; nop
- ba,a 9f
-
-6:
- subcc %i1, 6, %g0 ! syscall 6, flush windows
- bne 1f
- nop
-
- ba,a _irqcall_flush_windows
-
-1:
- ta 0 ! halt
-9: ! leave
- jmpl %l2, %g0
- rett %l2 + 4
-
-/* =============================================== */
-
- /* call _irqcall through trap */
- .global leonbare_enable_traps !void leonbare_enable_traps(unsigned long old_flags);
-leonbare_enable_traps:
- set 3,%o1
- retl
- ta 0x2
-
-/* =============================================== */
-
- /* call _irqcall through trap */
- .global leonbare_disable_traps !unsigned long leonbare_disable_traps();
-leonbare_disable_traps:
- set 2,%o1
- retl
- ta 0x2
-
-/* =============================================== */
-
- /* flush all windows */
- .global leonbare_flush_windows !void leonbare_flush_windows();
-leonbare_flush_windows:
- set 6,%o1
- retl
- ta 0x2
-
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