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altivec.c
(4.74 KB)
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autoconf.c
(2.69 KB)
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bus_machdep.c
(22.3 KB)
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busdma_machdep.c
(31.78 KB)
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clock.c
(8.72 KB)
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copyinout.c
(15.08 KB)
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cpu.c
(23.74 KB)
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cpu_subr64.S
(2.99 KB)
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db_disasm.c
(31.78 KB)
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db_hwwatch.c
(1.71 KB)
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db_interface.c
(1.78 KB)
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db_trace.c
(8.56 KB)
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dump_machdep.c
(1.63 KB)
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elf32_machdep.c
(11.71 KB)
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elf64_machdep.c
(12 KB)
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elf_common.c
(4.21 KB)
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exec_machdep.c
(29.55 KB)
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fpu.c
(6.47 KB)
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gdb_machdep.c
(3.5 KB)
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genassym.c
(10.78 KB)
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in_cksum.c
(6.64 KB)
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interrupt.c
(3.9 KB)
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intr_machdep.c
(15.53 KB)
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iommu_if.m
(1.74 KB)
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machdep.c
(21.72 KB)
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mem.c
(8.4 KB)
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minidump_machdep.c
(9.09 KB)
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mp_machdep.c
(8.81 KB)
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nexus.c
(7.06 KB)
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openpic.c
(11.35 KB)
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pic_if.m
(2.45 KB)
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platform.c
(9.15 KB)
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platform_if.m
(6.15 KB)
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pmap_dispatch.c
(8.92 KB)
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ptrace_machdep.c
(3.58 KB)
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sc_machdep.c
(2.21 KB)
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setjmp.S
(2.45 KB)
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sigcode32.S
(2.4 KB)
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sigcode64.S
(2.94 KB)
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stack_machdep.c
(3.1 KB)
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support.S
(11.06 KB)
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swtch32.S
(7.31 KB)
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swtch64.S
(10.59 KB)
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syncicache.c
(2.51 KB)
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sys_machdep.c
(1.73 KB)
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trap.c
(25.06 KB)
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uio_machdep.c
(4.04 KB)
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uma_machdep.c
(2.89 KB)
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vm_machdep.c
(7.5 KB)
Editing: altivec.c
/*- * SPDX-License-Identifier: BSD-4-Clause * * Copyright (C) 1996 Wolfgang Solfrank. * Copyright (C) 1996 TooLs GmbH. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by TooLs GmbH. * 4. The name of TooLs GmbH may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * $NetBSD: fpu.c,v 1.5 2001/07/22 11:29:46 wiz Exp $ */ #include <sys/cdefs.h> __FBSDID("$FreeBSD$"); #include <sys/param.h> #include <sys/proc.h> #include <sys/systm.h> #include <sys/limits.h> #include <machine/altivec.h> #include <machine/pcb.h> #include <machine/psl.h> static void save_vec_int(struct thread *td) { int msr; struct pcb *pcb; pcb = td->td_pcb; /* * Temporarily re-enable the vector unit during the save */ msr = mfmsr(); mtmsr(msr | PSL_VEC); /* * Save the vector registers and VSCR to the PCB */ #define STVX(n) __asm ("stvx %1,0,%0" \ :: "b"(pcb->pcb_vec.vr[n]), "n"(n)); STVX(0); STVX(1); STVX(2); STVX(3); STVX(4); STVX(5); STVX(6); STVX(7); STVX(8); STVX(9); STVX(10); STVX(11); STVX(12); STVX(13); STVX(14); STVX(15); STVX(16); STVX(17); STVX(18); STVX(19); STVX(20); STVX(21); STVX(22); STVX(23); STVX(24); STVX(25); STVX(26); STVX(27); STVX(28); STVX(29); STVX(30); STVX(31); #undef STVX __asm __volatile("mfvscr 0; stvewx 0,0,%0" :: "b"(&pcb->pcb_vec.vscr)); /* * Disable vector unit again */ isync(); mtmsr(msr); } void enable_vec(struct thread *td) { int msr; struct pcb *pcb; struct trapframe *tf; pcb = td->td_pcb; tf = trapframe(td); /* * Save the thread's Altivec CPU number, and set the CPU's current * vector thread */ td->td_pcb->pcb_veccpu = PCPU_GET(cpuid); PCPU_SET(vecthread, td); /* * Enable the vector unit for when the thread returns from the * exception. If this is the first time the unit has been used by * the thread, initialise the vector registers and VSCR to 0, and * set the flag to indicate that the vector unit is in use. */ tf->srr1 |= PSL_VEC; if (!(pcb->pcb_flags & PCB_VEC)) { memset(&pcb->pcb_vec, 0, sizeof pcb->pcb_vec); pcb->pcb_flags |= PCB_VEC; } /* * Temporarily enable the vector unit so the registers * can be restored. */ msr = mfmsr(); mtmsr(msr | PSL_VEC); /* * Restore VSCR by first loading it into a vector and then into VSCR. * (this needs to done before loading the user's vector registers * since we need to use a scratch vector register) */ __asm __volatile("vxor 0,0,0; lvewx 0,0,%0; mtvscr 0" \ :: "b"(&pcb->pcb_vec.vscr)); #define LVX(n) __asm ("lvx " #n ",0,%0" \ :: "b"(&pcb->pcb_vec.vr[n])); LVX(0); LVX(1); LVX(2); LVX(3); LVX(4); LVX(5); LVX(6); LVX(7); LVX(8); LVX(9); LVX(10); LVX(11); LVX(12); LVX(13); LVX(14); LVX(15); LVX(16); LVX(17); LVX(18); LVX(19); LVX(20); LVX(21); LVX(22); LVX(23); LVX(24); LVX(25); LVX(26); LVX(27); LVX(28); LVX(29); LVX(30); LVX(31); #undef LVX isync(); mtmsr(msr); } void save_vec(struct thread *td) { struct pcb *pcb; pcb = td->td_pcb; save_vec_int(td); /* * Clear the current vec thread and pcb's CPU id * XXX should this be left clear to allow lazy save/restore ? */ pcb->pcb_veccpu = INT_MAX; PCPU_SET(vecthread, NULL); } /* * Save altivec state without dropping ownership. This will only save state if * the current vector-thread is `td'. */ void save_vec_nodrop(struct thread *td) { if (td == PCPU_GET(vecthread)) save_vec_int(td); }
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