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/*-
* Copyright (c) 2001 by Thomas Moestl <tmm@FreeBSD.org>.
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 THE AUTHOR OR CONTRIBUTORS 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/types.h>
#include <machine/cpufunc.h>
#include <machine/frame.h>
#include <machine/instr.h>
#include <signal.h>
#include "__sparc_utrap_private.h"
#include "fpu_reg.h"
int
__emul_insn(struct utrapframe *uf)
{
u_long reg, res;
u_long *addr;
u_int insn;
int sig;
int rd;
int i;
sig = 0;
insn = *(u_int *)uf->uf_pc;
flushw();
switch (IF_OP(insn)) {
case IOP_MISC:
switch (IF_F3_OP3(insn)) {
case INS2_POPC:
if (IF_F3_RS1(insn) != 0) {
sig = SIGILL;
break;
}
reg = __emul_f3_op2(uf, insn);
for (i = 0; i < 64; i++)
res += (reg >> i) & 1;
__emul_store_reg(uf, IF_F3_RD(insn), res);
break;
default:
sig = SIGILL;
break;
}
break;
case IOP_LDST:
switch (IF_F3_OP3(insn)) {
case INS3_LDQF:
rd = INSFPdq_RN(IF_F3_RD(insn));
addr = (u_long *)__emul_f3_memop_addr(uf, insn);
__fpu_setreg64(rd, addr[0]);
__fpu_setreg64(rd + 2, addr[1]);
break;
case INS3_STQF:
rd = INSFPdq_RN(IF_F3_RD(insn));
addr = (u_long *)__emul_f3_memop_addr(uf, insn);
addr[0] = __fpu_getreg64(rd);
addr[1] = __fpu_getreg64(rd + 2);
break;
default:
sig = SIGILL;
break;
}
break;
default:
sig = SIGILL;
break;
}
return (sig);
}
u_long
__emul_fetch_reg(struct utrapframe *uf, int reg)
{
struct frame *frm;
if (reg == IREG_G0)
return (0);
else if (reg < IREG_O0) /* global */
return (uf->uf_global[reg]);
else if (reg < IREG_L0) /* out */
return (uf->uf_out[reg - IREG_O0]);
else { /* local, in */
/*
* The in registers are immediately after the locals in
* the frame.
*/
frm = (struct frame *)(uf->uf_out[6] + SPOFF);
return (frm->fr_local[reg - IREG_L0]);
}
}
void
__emul_store_reg(struct utrapframe *uf, int reg, u_long val)
{
struct frame *frm;
if (reg == IREG_G0)
return;
if (reg < IREG_O0) /* global */
uf->uf_global[reg] = val;
else if (reg < IREG_L0) /* out */
uf->uf_out[reg - IREG_O0] = val;
else {
/*
* The in registers are immediately after the locals in
* the frame.
*/
frm = (struct frame *)(uf->uf_out[6] + SPOFF);
frm->fr_local[reg - IREG_L0] = val;
}
}
u_long
__emul_f3_op2(struct utrapframe *uf, u_int insn)
{
if (IF_F3_I(insn) != 0)
return (IF_SIMM(insn, 13));
else
return (__emul_fetch_reg(uf, IF_F3_RS2(insn)));
}
u_long
__emul_f3_memop_addr(struct utrapframe *uf, u_int insn)
{
u_long addr;
addr = __emul_f3_op2(uf, insn) + __emul_fetch_reg(uf, IF_F3_RS1(insn));
return (addr);
}
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