9014a6e40c
Mainly focus on files that use BSD 2-Clause license, however the tool I was using mis-identified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts.
120 lines
3.1 KiB
C
120 lines
3.1 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2002 Jake Burkholder.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
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* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/types.h>
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#include <machine/cpufunc.h>
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#include <machine/instr.h>
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#include <signal.h>
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#include "__sparc_utrap_private.h"
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static u_long
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__unaligned_load(u_char *p, int size)
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{
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u_long val;
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int i;
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val = 0;
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for (i = 0; i < size; i++)
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val = (val << 8) | p[i];
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return (val);
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}
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static void
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__unaligned_store(u_char *p, u_long val, int size)
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{
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int i;
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for (i = 0; i < size; i++)
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p[i] = val >> ((size - i - 1) * 8);
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}
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int
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__unaligned_fixup(struct utrapframe *uf)
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{
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u_char *addr;
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u_long val;
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u_int insn;
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int sig;
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sig = 0;
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addr = (u_char *)uf->uf_sfar;
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insn = *(u_int *)uf->uf_pc;
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flushw();
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switch (IF_OP(insn)) {
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case IOP_LDST:
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switch (IF_F3_OP3(insn)) {
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case INS3_LDUH:
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val = __unaligned_load(addr, 2);
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__emul_store_reg(uf, IF_F3_RD(insn), val);
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break;
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case INS3_LDUW:
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val = __unaligned_load(addr, 4);
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__emul_store_reg(uf, IF_F3_RD(insn), val);
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break;
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case INS3_LDX:
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val = __unaligned_load(addr, 8);
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__emul_store_reg(uf, IF_F3_RD(insn), val);
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break;
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case INS3_LDSH:
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val = __unaligned_load(addr, 2);
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__emul_store_reg(uf, IF_F3_RD(insn),
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IF_SEXT(val, 16));
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break;
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case INS3_LDSW:
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val = __unaligned_load(addr, 4);
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__emul_store_reg(uf, IF_F3_RD(insn),
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IF_SEXT(val, 32));
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break;
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case INS3_STH:
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val = __emul_fetch_reg(uf, IF_F3_RD(insn));
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__unaligned_store(addr, val, 2);
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break;
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case INS3_STW:
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val = __emul_fetch_reg(uf, IF_F3_RD(insn));
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__unaligned_store(addr, val, 4);
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break;
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case INS3_STX:
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val = __emul_fetch_reg(uf, IF_F3_RD(insn));
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__unaligned_store(addr, val, 8);
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break;
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default:
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sig = SIGILL;
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break;
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}
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break;
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default:
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sig = SIGILL;
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break;
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}
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return (sig);
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}
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