117 lines
3.3 KiB
C
117 lines
3.3 KiB
C
/*
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* Copyright (c) 2012 Stephen Williams (steve@icarus.com)
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*
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* This source code is free software; you can redistribute it
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* and/or modify it in source code form under the terms of the GNU
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* General Public License as published by the Free Software
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* Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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# include "vvp_priv.h"
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# include <string.h>
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# include <assert.h>
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static int eval_darray_new(ivl_expr_t ex)
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{
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unsigned size_reg = allocate_word();
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ivl_expr_t size_expr = ivl_expr_oper1(ex);
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draw_eval_expr_into_integer(size_expr, size_reg);
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clr_word(size_reg);
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// The new function has a net_type that contains the details
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// of the type.
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ivl_type_t net_type = ivl_expr_net_type(ex);
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assert(net_type);
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ivl_type_t element_type = ivl_type_element(net_type);
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assert(element_type);
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switch (ivl_type_base(element_type)) {
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case IVL_VT_REAL:
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// REAL objects are not packable.
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assert(ivl_type_packed_dimensions(element_type) == 0);
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fprintf(vvp_out, " %%new/darray %u, \"r\";\n", size_reg);
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break;
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case IVL_VT_STRING:
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// STRING objects are not packable.
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assert(ivl_type_packed_dimensions(element_type) == 0);
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fprintf(vvp_out, " %%new/darray %u, \"S\";\n", size_reg);
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break;
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case IVL_VT_BOOL:
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// bool objects are vectorable, but for now only support
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// a single dimensions.
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assert(ivl_type_packed_dimensions(element_type) == 1);
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int msb = ivl_type_packed_msb(element_type, 0);
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int lsb = ivl_type_packed_lsb(element_type, 0);
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int wid = msb>=lsb? msb - lsb : lsb - msb;
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wid += 1;
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fprintf(vvp_out, " %%new/darray %u, \"sb%d\";\n", size_reg, wid);
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break;
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default:
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assert(0);
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break;
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}
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return 0;
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}
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static int eval_class_new(ivl_expr_t ex)
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{
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fprintf(vvp_out, " %%new/cobj ; XXXX Need to specify the type?\n");
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return 0;
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}
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static int eval_object_null(ivl_expr_t ex)
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{
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fprintf(vvp_out, " %%null;\n");
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return 0;
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}
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static int eval_object_signal(ivl_expr_t ex)
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{
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ivl_signal_t sig = ivl_expr_signal(ex);
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fprintf(vvp_out, " %%load/obj v%p_0;\n", sig);
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return 0;
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}
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int draw_eval_object(ivl_expr_t ex)
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{
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switch (ivl_expr_type(ex)) {
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case IVL_EX_NEW:
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switch (ivl_expr_value(ex)) {
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case IVL_VT_CLASS:
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return eval_class_new(ex);
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case IVL_VT_DARRAY:
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return eval_darray_new(ex);
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default:
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fprintf(vvp_out, "; ERROR: draw_eval_object: Invalid type (%d) for <new>\n",
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ivl_expr_value(ex));
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return 0;
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}
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case IVL_EX_NULL:
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return eval_object_null(ex);
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case IVL_EX_SIGNAL:
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return eval_object_signal(ex);
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default:
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fprintf(vvp_out, "; ERROR: draw_eval_object: Invalid expression type %u\n", ivl_expr_type(ex));
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return 1;
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}
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}
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