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/* execute.c -- Instruction specific functions.
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/* execute.c -- Instruction specific functions.
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Copyright (C) 1999 Damjan Lampret, lampret@opencores.org
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Copyright (C) 1999 Damjan Lampret, lampret@opencores.org
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2000-2002 Marko Mlinar, markom@opencores.org
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2000-2002 Marko Mlinar, markom@opencores.org
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Copyright (C) 2008 Embecosm Limited
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Contributor Jeremy Bennett <jeremy.bennett@embecosm.com>
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This file is part of OpenRISC 1000 Architectural Simulator.
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This file is part of OpenRISC 1000 Architectural Simulator.
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This program is free software; you can redistribute it and/or modify
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This program is free software; you can redistribute it and/or modify it
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it under the terms of the GNU General Public License as published by
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under the terms of the GNU General Public License as published by the Free
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the Free Software Foundation; either version 2 of the License, or
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Software Foundation; either version 3 of the License, or (at your option)
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(at your option) any later version.
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any later version.
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This program is distributed in the hope that it will be useful,
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This program is distributed in the hope that it will be useful, but WITHOUT
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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GNU General Public License for more details.
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more details.
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You should have received a copy of the GNU General Public License
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You should have received a copy of the GNU General Public License along
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along with this program; if not, write to the Free Software
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with this program. If not, see <http://www.gnu.org/licenses/>. */
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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INSTRUCTION (l_add) {
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INSTRUCTION (l_add) {
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orreg_t temp1, temp2, temp3;
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orreg_t temp1, temp2, temp3;
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int8_t temp4;
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int8_t temp4;
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}
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}
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INSTRUCTION (l_lwz) {
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INSTRUCTION (l_lwz) {
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uint32_t val;
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uint32_t val;
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if (config.cpu.sbuf_len) sbuf_load ();
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if (config.cpu.sbuf_len) sbuf_load ();
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val = eval_mem32(PARAM1, &breakpoint);
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val = eval_mem32(PARAM1, &breakpoint);
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/* If eval operand produced exception don't set anything */
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/* If eval operand produced exception don't set anything. JPB changed to
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if (!except_pending)
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trigger on breakpoint, as well as except_pending (seemed to be a bug). */
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if (!(except_pending || breakpoint))
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SET_PARAM0(val);
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SET_PARAM0(val);
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}
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}
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INSTRUCTION (l_lbs) {
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INSTRUCTION (l_lbs) {
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int8_t val;
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int8_t val;
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if (config.cpu.sbuf_len) sbuf_load ();
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if (config.cpu.sbuf_len) sbuf_load ();
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val = eval_mem8(PARAM1, &breakpoint);
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val = eval_mem8(PARAM1, &breakpoint);
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/* If eval opreand produced exception don't set anything */
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/* If eval operand produced exception don't set anything. JPB changed to
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if (!except_pending)
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trigger on breakpoint, as well as except_pending (seemed to be a bug). */
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if (!(except_pending || breakpoint))
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SET_PARAM0(val);
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SET_PARAM0(val);
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}
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}
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INSTRUCTION (l_lbz) {
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INSTRUCTION (l_lbz) {
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uint8_t val;
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uint8_t val;
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if (config.cpu.sbuf_len) sbuf_load ();
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if (config.cpu.sbuf_len) sbuf_load ();
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val = eval_mem8(PARAM1, &breakpoint);
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val = eval_mem8(PARAM1, &breakpoint);
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/* If eval opreand produced exception don't set anything */
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/* If eval operand produced exception don't set anything. JPB changed to
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if (!except_pending)
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trigger on breakpoint, as well as except_pending (seemed to be a bug). */
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if (!(except_pending || breakpoint))
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SET_PARAM0(val);
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SET_PARAM0(val);
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}
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}
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INSTRUCTION (l_lhs) {
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INSTRUCTION (l_lhs) {
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int16_t val;
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int16_t val;
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if (config.cpu.sbuf_len) sbuf_load ();
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if (config.cpu.sbuf_len) sbuf_load ();
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val = eval_mem16(PARAM1, &breakpoint);
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val = eval_mem16(PARAM1, &breakpoint);
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/* If eval opreand produced exception don't set anything */
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/* If eval operand produced exception don't set anything. JPB changed to
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if (!except_pending)
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trigger on breakpoint, as well as except_pending (seemed to be a bug). */
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if (!(except_pending || breakpoint))
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SET_PARAM0(val);
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SET_PARAM0(val);
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}
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}
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INSTRUCTION (l_lhz) {
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INSTRUCTION (l_lhz) {
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uint16_t val;
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uint16_t val;
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if (config.cpu.sbuf_len) sbuf_load ();
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if (config.cpu.sbuf_len) sbuf_load ();
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val = eval_mem16(PARAM1, &breakpoint);
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val = eval_mem16(PARAM1, &breakpoint);
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/* If eval opreand produced exception don't set anything */
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/* If eval operand produced exception don't set anything. JPB changed to
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if (!except_pending)
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trigger on breakpoint, as well as except_pending (seemed to be a bug). */
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if (!(except_pending || breakpoint))
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SET_PARAM0(val);
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SET_PARAM0(val);
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}
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}
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INSTRUCTION (l_movhi) {
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INSTRUCTION (l_movhi) {
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SET_PARAM0(PARAM1 << 16);
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SET_PARAM0(PARAM1 << 16);
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}
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}
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break;
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break;
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case NOP_PRINTF:
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case NOP_PRINTF:
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stackaddr = evalsim_reg(4);
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stackaddr = evalsim_reg(4);
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simprintf(stackaddr, evalsim_reg(3));
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simprintf(stackaddr, evalsim_reg(3));
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break;
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break;
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case NOP_PUTC: /*JPB */
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printf( "%c", evalsim_reg( 3 ));
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fflush( stdout );
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break;
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case NOP_REPORT:
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case NOP_REPORT:
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PRINTF("report(0x%"PRIxREG");\n", evalsim_reg(3));
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PRINTF("report(0x%"PRIxREG");\n", evalsim_reg(3));
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default:
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default:
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if (k >= NOP_REPORT_FIRST && k <= NOP_REPORT_LAST)
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if (k >= NOP_REPORT_FIRST && k <= NOP_REPORT_LAST)
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PRINTF("report %i (0x%"PRIxREG");\n", k - NOP_REPORT_FIRST,
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PRINTF("report %i (0x%"PRIxREG");\n", k - NOP_REPORT_FIRST,
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