8e0346d137
* configure.in: Add SPARC LEON support.
* configure: Regenerated.
* sparc_leon/asm-leon/amba.h, sparc_leon/asm-leon/asmmacro.h,
sparc_leon/asm-leon/clock.h, sparc_leon/asm-leon/contextswitch.h,
sparc_leon/asm-leon/elfmacro.h, sparc_leon/asm-leon/head.h,
sparc_leon/asm-leon/irq.h, sparc_leon/asm-leon/jiffies.h,
sparc_leon/asm-leon/lambapp.h, sparc_leon/asm-leon/lambapp_devs.h,
sparc_leon/asm-leon/leon.h, sparc_leon/asm-leon/leon3.h,
sparc_leon/asm-leon/leonbare_debug.h, sparc_leon/asm-leon/leonbare_kernel.h,
sparc_leon/asm-leon/leonbare_kernel_queue.h, sparc_leon/asm-leon/leoncompat.h,
sparc_leon/asm-leon/leondbg.h, sparc_leon/asm-leon/leonstack.h,
sparc_leon/asm-leon/liblocks.h, sparc_leon/asm-leon/linkage.h,
sparc_leon/asm-leon/param.h, sparc_leon/asm-leon/queue.h,
sparc_leon/asm-leon/spinlock.h, sparc_leon/asm-leon/stack.h,
sparc_leon/asm-leon/time.h, sparc_leon/asm-leon/timer.h,
sparc_leon/asm-leon/types.h, sparc_leon/asm-leon/winmacros.h:
New file.
* sparc_leon/Makefile.in, sparc_leon/_exit.c,
sparc_leon/amba.c, sparc_leon/amba_dbg.c,
sparc_leon/amba_driver.c, sparc_leon/amba_scan.c,
sparc_leon/asm-leon, sparc_leon/bdinit.S,
sparc_leon/busscan.S, sparc_leon/cacheA.S,
sparc_leon/catch_interrupt.c, sparc_leon/catch_interrupt_mvt.c,
sparc_leon/catch_interrupt_pending.c, sparc_leon/catch_interrupt_svt.c,
sparc_leon/configure.in,
sparc_leon/console.c, sparc_leon/console_dbg.c,
sparc_leon/console_init.c, sparc_leon/contextswitch.c,
sparc_leon/contextswitch_asm.S, sparc_leon/crt0.S,
sparc_leon/crti.S, sparc_leon/crtn.S,
sparc_leon/etrap.S, sparc_leon/etrap_fast.S,
sparc_leon/fpu.S, sparc_leon/gettimeofday.c,
sparc_leon/initcalls.c, sparc_leon/io.c,
sparc_leon/irqinstall.S, sparc_leon/irqtrap.S,
sparc_leon/irqtrap_fast.S, sparc_leon/jiffies.c,
sparc_leon/kernel.c, sparc_leon/kernel_context.S,
sparc_leon/kernel_debug.c, sparc_leon/kernel_debug_var.c,
sparc_leon/kernel_mm.c, sparc_leon/kernel_mutex.c,
sparc_leon/kernel_queue.c, sparc_leon/kernel_sched.c,
sparc_leon/kernel_thread.c, sparc_leon/lcpuinit.S,
sparc_leon/locore.S, sparc_leon/locore_atexit.c,
sparc_leon/locore_clean.S, sparc_leon/locore_mvt.S,
sparc_leon/locore_mvt_reset.S, sparc_leon/locore_svt.S,
sparc_leon/locore_svt_reset.S, sparc_leon/locore_svtdisp.S,
sparc_leon/locore_var.S, sparc_leon/locore_var_svt.S,
sparc_leon/mmu_asm.S, sparc_leon/mutex.c,
sparc_leon/nocache.S, sparc_leon/pnpinit.c,
sparc_leon/pnpinit_malloc.c, sparc_leon/pnpinit_simple.c,
sparc_leon/regwin.S, sparc_leon/regwin_patch.c,
sparc_leon/regwin_slow.S, sparc_leon/regwinflush.S,
sparc_leon/rtc.c, sparc_leon/rtrap.S,
sparc_leon/rtrap_fast.S, sparc_leon/stop.S,
sparc_leon/timer.c, sparc_leon/times.c:
New file
* sparc_leon/configure: Regenerate
159 lines
3.8 KiB
ArmAsm
159 lines
3.8 KiB
ArmAsm
/*
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* Copyright (c) 2011 Aeroflex Gaisler
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*
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* BSD license:
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <asm-leon/leonstack.h>
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#include <asm-leon/winmacros.h>
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/* Registers to not touch at all. */
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#define t_psr l0
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#define t_pc l1
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#define t_npc l2
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#define t_wim l3
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#define twin_tmp1 l4
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#define glob_tmp g4
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#define curptr g6
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/* Number of register windows */
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.global _nwindows_min1, _nwindows
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.text
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.align 4
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.globl leonbare_trapreturn_fast, schedule_callback
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/* rtap return special for irqtrap.S */
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leonbare_trapreturn_fast:
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/* a optional scheduler can be called here */
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set schedule_callback, %g2
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ld [%g2], %g2
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cmp %g2,%g0
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beq 3f
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nop
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jmpl %g2,%o7
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#ifndef _SOFT_FLOAT
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add %sp, FW_REGS_SZ + 8 + SF_REGS_SZ , %o1 ! pt_regs ptr
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#else
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add %sp, SF_REGS_SZ , %o1 ! pt_regs ptr
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#endif
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3:
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#ifndef _SOFT_FLOAT
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ld [%sp + (SF_REGS_SZ + PT_REGS_SZ + FW_REGS_SZ - 4)],%g2
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sethi %hi(fpustate_current), %g3
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st %g2, [%g3+%lo(fpustate_current)]
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sethi %hi(fpustate_owner), %g3
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ld [%g3+%lo(fpustate_owner)], %g3
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cmp %g2, %g3
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bne didusefpu
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nop
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/* avoid fpu exception */
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ld [%sp + (SF_REGS_SZ + PT_REGS_SZ + FW_REGS_SZ - 8)], %g2
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set SPARC_PSR_EF_MASK, %g3
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and %g2, %g3, %g2
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andn %t_psr, %g3, %t_psr
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or %t_psr, %g2, %t_psr
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ba,a 1f
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didusefpu:
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add %sp,SF_REGS_SZ + PT_REGS_SZ,%g2
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cmp %g2, %g3
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bne 1f
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sethi %hi(fpustate_owner), %g3
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st %g0, [%g3+%lo(fpustate_owner)]
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1:
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#endif
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wr %t_psr, 0x0, %psr ! enable nesting again, clear ET
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#ifndef _FLAT
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/* Will the rett land us in the invalid window? */
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mov 2, %g1
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sll %g1, %t_psr, %g1
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sethi %hi(_nwindows), %g2 !NWINDOWS
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ld [%g2+%lo(_nwindows)], %g2
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srl %g1, %g2, %g2
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or %g1, %g2, %g1
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rd %wim, %g2
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andcc %g2, %g1, %g0
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be 1f ! Nope, just return from the trap
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sll %g2, 0x1, %g1
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/* We have to grab a window before returning. */
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sethi %hi(_nwindows_min1), %g3 !NWINDOWS-1
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ld [%g3+%lo(_nwindows_min1)], %g3
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srl %g2, %g3, %g2
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or %g1, %g2, %g1
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and %g1, 0xff, %g1
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wr %g1, 0x0, %wim
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/* Grrr, make sure we load from the right %sp... */
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PT_LOAD_ALL_FAST(sp, t_psr, t_pc, t_npc, g1)
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restore %g0, %g0, %g0
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RW_LOAD(sp)
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b 2f
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save %g0, %g0, %g0
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/* Reload the entire frame in case this is from a
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* kernel system call or whatever...
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*/
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1:
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#endif
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PT_LOAD_ALL_FAST(sp, t_psr, t_pc, t_npc, g1)
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2: /*PT_LOAD_GLOBALS(sp)*/
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#ifdef _FLAT
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restore
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RW_LOAD(sp)
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save
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#endif
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wr %t_psr, 0x0, %psr
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nop; nop; nop
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jmp %t_pc
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rett %t_npc
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#ifdef _FLAT
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#warning _FLAT not implemented
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#endif
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