7a3f194486
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@386 c046a42c-6fe2-441c-8c8c-71466251a162
501 lines
8.0 KiB
C
501 lines
8.0 KiB
C
/*
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SPARC micro operations
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Copyright (C) 2003 Thomas M. Ogrisegg <tom@fnord.at>
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "exec.h"
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/*XXX*/
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#define REGNAME g0
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#define REG (env->gregs[0])
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#include "op_template.h"
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#define REGNAME g1
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#define REG (env->gregs[1])
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#include "op_template.h"
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#define REGNAME g2
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#define REG (env->gregs[2])
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#include "op_template.h"
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#define REGNAME g3
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#define REG (env->gregs[3])
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#include "op_template.h"
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#define REGNAME g4
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#define REG (env->gregs[4])
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#include "op_template.h"
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#define REGNAME g5
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#define REG (env->gregs[5])
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#include "op_template.h"
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#define REGNAME g6
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#define REG (env->gregs[6])
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#include "op_template.h"
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#define REGNAME g7
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#define REG (env->gregs[7])
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#include "op_template.h"
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#define REGNAME i0
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#define REG (env->regwptr[16])
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#include "op_template.h"
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#define REGNAME i1
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#define REG (env->regwptr[17])
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#include "op_template.h"
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#define REGNAME i2
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#define REG (env->regwptr[18])
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#include "op_template.h"
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#define REGNAME i3
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#define REG (env->regwptr[19])
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#include "op_template.h"
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#define REGNAME i4
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#define REG (env->regwptr[20])
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#include "op_template.h"
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#define REGNAME i5
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#define REG (env->regwptr[21])
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#include "op_template.h"
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#define REGNAME i6
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#define REG (env->regwptr[22])
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#include "op_template.h"
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#define REGNAME i7
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#define REG (env->regwptr[23])
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#include "op_template.h"
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#define REGNAME l0
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#define REG (env->regwptr[8])
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#include "op_template.h"
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#define REGNAME l1
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#define REG (env->regwptr[9])
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#include "op_template.h"
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#define REGNAME l2
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#define REG (env->regwptr[10])
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#include "op_template.h"
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#define REGNAME l3
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#define REG (env->regwptr[11])
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#include "op_template.h"
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#define REGNAME l4
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#define REG (env->regwptr[12])
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#include "op_template.h"
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#define REGNAME l5
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#define REG (env->regwptr[13])
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#include "op_template.h"
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#define REGNAME l6
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#define REG (env->regwptr[14])
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#include "op_template.h"
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#define REGNAME l7
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#define REG (env->regwptr[15])
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#include "op_template.h"
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#define REGNAME o0
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#define REG (env->regwptr[0])
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#include "op_template.h"
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#define REGNAME o1
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#define REG (env->regwptr[1])
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#include "op_template.h"
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#define REGNAME o2
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#define REG (env->regwptr[2])
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#include "op_template.h"
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#define REGNAME o3
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#define REG (env->regwptr[3])
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#include "op_template.h"
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#define REGNAME o4
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#define REG (env->regwptr[4])
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#include "op_template.h"
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#define REGNAME o5
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#define REG (env->regwptr[5])
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#include "op_template.h"
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#define REGNAME o6
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#define REG (env->regwptr[6])
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#include "op_template.h"
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#define REGNAME o7
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#define REG (env->regwptr[7])
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#include "op_template.h"
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#define EIP (env->pc)
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void OPPROTO op_movl_T0_0(void)
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{
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T0 = 0;
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}
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void OPPROTO op_movl_T0_1(void)
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{
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T0 = 1;
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}
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void OPPROTO op_movl_T0_im(void)
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{
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T0 = PARAM1;
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}
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void OPPROTO op_movl_T1_im(void)
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{
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T1 = PARAM1;
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}
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void OPPROTO op_movl_T2_im(void)
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{
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T2 = PARAM1;
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}
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void OPPROTO op_addl_T1_im(void)
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{
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T1 += PARAM1;
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}
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void OPPROTO op_addl_T1_T2(void)
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{
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T1 += T2;
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}
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void OPPROTO op_subl_T1_T2(void)
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{
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T1 -= T2;
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}
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void OPPROTO op_add_T1_T0 (void)
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{
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T0 += T1;
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}
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void OPPROTO op_and_T1_T0 (void)
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{
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T0 &= T1;
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}
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void OPPROTO op_or_T1_T0 (void)
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{
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T0 |= T1;
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}
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void OPPROTO op_xor_T1_T0 (void)
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{
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T0 ^= T1;
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}
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void OPPROTO op_sub_T1_T0 (void)
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{
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T0 -= T1;
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}
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void OPPROTO op_andn_T1_T0 (void)
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{
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T0 &= ~T1;
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}
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void OPPROTO op_orn_T1_T0 (void)
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{
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T0 |= ~T1;
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}
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void OPPROTO op_xnor_T1_T0 (void)
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{
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T0 ^= ~T1;
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}
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void OPPROTO op_addx_T1_T0 (void)
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{
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T0 += T1+((env->psr & PSR_CARRY)?1:0);
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}
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void OPPROTO op_umul_T1_T0 (void)
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{
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unsigned long long res = T0*T1;
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T0 = res & 0xffffffff;
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env->y = res >> 32;
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}
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void OPPROTO op_smul_T1_T0 (void)
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{
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long long res = T0*T1;
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T0 = res & 0xffffffff;
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env->y = res >> 32;
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}
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void OPPROTO op_udiv_T1_T0 (void)
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{
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unsigned long long x0 = T0 * env->y;
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unsigned int x1 = T1;
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T0 = x0 / x1;
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}
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void OPPROTO op_sdiv_T1_T0 (void)
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{
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long long x0 = T0 * env->y;
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int x1 = T1;
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T0 = x0 / x1;
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}
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void OPPROTO op_subx_T1_T0 (void)
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{
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T0 -= T1+((env->psr & PSR_CARRY)?1:0);
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}
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void OPPROTO op_set_flags (void)
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{
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env->psr = 0;
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if (!T0) env->psr |= PSR_ZERO;
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if ((unsigned int) T0 < (unsigned int) T1) env->psr |= PSR_CARRY;
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if ((int) T0 < (int) T1) env->psr |= PSR_OVF;
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if ((int) T0 < 0) env->psr |= PSR_NEG;
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}
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void OPPROTO op_sll (void)
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{
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T0 <<= T1;
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}
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void OPPROTO op_srl (void)
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{
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T0 >>= T1;
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}
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void OPPROTO op_sra (void)
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{
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int x = T0 >> T1;
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T0 = x;
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}
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void OPPROTO op_st (void)
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{
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stl ((void *) T0, T1);
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}
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void OPPROTO op_stb (void)
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{
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stb ((void *) T0, T1);
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}
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void OPPROTO op_sth (void)
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{
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stw ((void *) T0, T1);
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}
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void OPPROTO op_ld (void)
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{
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T1 = ldl ((void *) T0);
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}
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void OPPROTO op_ldub (void)
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{
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T1 = ldub ((void *) T0);
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}
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void OPPROTO op_lduh (void)
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{
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T1 = lduw ((void *) T0);
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}
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void OPPROTO op_ldsb (void)
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{
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T1 = ldsb ((void *) T0);
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}
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void OPPROTO op_ldsh (void)
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{
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T1 = ldsw ((void *) T0);
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}
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void OPPROTO op_ldstub (void)
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{
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T1 = ldub ((void *) T0);
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stb ((void *) T0, 0xff); /* XXX: Should be Atomically */
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}
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void OPPROTO op_swap (void)
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{
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unsigned int tmp = ldl ((void *) T0);
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stl ((void *) T0, T1); /* XXX: Should be Atomically */
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T1 = tmp;
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}
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void OPPROTO op_ldd (void)
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{
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T1 = ldl ((void *) T0);
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T0 = ldl ((void *) T0+4);
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}
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void OPPROTO op_wry (void)
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{
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env->y = T0^T1;
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}
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void OPPROTO op_rdy (void)
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{
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T0 = env->y;
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}
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#define regwptr (env->regwptr)
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void OPPROTO op_save (void)
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{
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regwptr -= 16;
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}
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void OPPROTO op_restore (void)
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{
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regwptr += 16;
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}
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void OPPROTO op_trap (void)
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{
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env->exception_index = PARAM1;
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cpu_loop_exit ();
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}
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void OPPROTO op_exit_tb (void)
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{
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EXIT_TB ();
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}
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void OPPROTO op_eval_be (void)
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{
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T0 = (env->psr & PSR_ZERO);
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}
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#define FLAG_SET(x) (env->psr&x)?1:0
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#define GET_FLAGS unsigned int Z = FLAG_SET(PSR_ZERO), N = FLAG_SET(PSR_NEG), V = FLAG_SET(PSR_OVF), C = FLAG_SET(PSR_CARRY)
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void OPPROTO op_eval_ble (void)
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{
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GET_FLAGS;
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T0 = Z | (N^V);
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}
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void OPPROTO op_eval_bl (void)
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{
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GET_FLAGS;
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T0 = N^V;
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}
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void OPPROTO op_eval_bleu (void)
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{
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GET_FLAGS;
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T0 = C|Z;
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}
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void OPPROTO op_eval_bcs (void)
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{
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T0 = (env->psr & PSR_CARRY);
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}
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void OPPROTO op_eval_bvs (void)
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{
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T0 = (env->psr & PSR_OVF);
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}
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void OPPROTO op_eval_bneg (void)
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{
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T0 = (env->psr & PSR_NEG);
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}
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void OPPROTO op_eval_bne (void)
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{
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T0 = !(env->psr & PSR_ZERO);
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}
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void OPPROTO op_eval_bg (void)
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{
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GET_FLAGS;
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T0 = !(Z | (N^V));
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}
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/*XXX: This seems to be documented wrong in the SPARC V8 Manual
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The manual states: !(N^V)
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but I assume Z | !(N^V) to be correct */
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void OPPROTO op_eval_bge (void)
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{
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GET_FLAGS;
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T0 = Z | !(N^V);
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}
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void OPPROTO op_eval_bgu (void)
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{
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GET_FLAGS;
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T0 = !(C | Z);
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}
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void OPPROTO op_eval_bcc (void)
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{
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T0 = !(env->psr & PSR_CARRY);
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}
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void OPPROTO op_eval_bpos (void)
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{
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T0 = !(env->psr & PSR_NEG);
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}
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void OPPROTO op_eval_bvc (void)
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{
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T0 = !(env->psr & PSR_OVF);
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}
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void OPPROTO op_jmp_im (void)
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{
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env->pc = PARAM1;
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}
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void OPPROTO op_call (void)
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{
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regwptr[7] = PARAM1-4;
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env->pc = PARAM1+PARAM2;
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}
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void OPPROTO op_jmpl (void)
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{
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env->npc = T0;
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}
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void OPPROTO op_generic_jmp_1 (void)
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{
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T1 = PARAM1;
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env->pc = PARAM1+PARAM2;
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}
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void OPPROTO op_generic_jmp_2 (void)
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{
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T1 = PARAM1;
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env->pc = env->npc;
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}
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unsigned long old_T0;
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void OPPROTO op_save_T0 (void)
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{
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old_T0 = T0;
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}
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void OPPROTO op_restore_T0 (void)
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{
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T0 = old_T0;
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}
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void OPPROTO op_generic_branch (void)
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{
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if (T0)
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JUMP_TB (__func__, PARAM1, 0, PARAM2);
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else
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JUMP_TB (__func__, PARAM1, 1, PARAM3);
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FORCE_RET ();
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}
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void OPPROTO op_generic_branch_a (void)
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{
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if (T0)
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env->npc = PARAM3;
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else
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JUMP_TB (__func__, PARAM1, 0, PARAM2);
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FORCE_RET ();
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}
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void OPPROTO op_noop (void)
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{
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}
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