257 lines
7.4 KiB
C
257 lines
7.4 KiB
C
/*
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* Copyright (c) 2001-2020 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 "version_base.h"
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# include "version_tag.h"
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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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# include <stdlib.h>
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# include <sys/types.h>
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# include <sys/stat.h>
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static const char*version_string =
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"Icarus Verilog VVP Code Generator " VERSION " (" VERSION_TAG ")\n\n"
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"Copyright (c) 2001-2020 Stephen Williams (steve@icarus.com)\n\n"
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" This program is free software; you can redistribute it and/or modify\n"
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" it under the terms of the GNU General Public License as published by\n"
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" the Free Software Foundation; either version 2 of the License, or\n"
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" (at your option) any later version.\n"
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"\n"
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" This program is distributed in the hope that it will be useful,\n"
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" but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
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" MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
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" GNU General Public License for more details.\n"
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"\n"
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" You should have received a copy of the GNU General Public License along\n"
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" with this program; if not, write to the Free Software Foundation, Inc.,\n"
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" 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.\n"
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;
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FILE*vvp_out = 0;
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int vvp_errors = 0;
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unsigned show_file_line = 0;
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int debug_draw = 0;
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/* This needs to match the actual flag count in the VVP thread. */
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# define FLAGS_COUNT 512
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static uint32_t allocate_flag_mask[FLAGS_COUNT / 32] = { 0x000000ff, 0 };
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__inline__ static void draw_execute_header(ivl_design_t des)
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{
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const char*cp = ivl_design_flag(des, "VVP_EXECUTABLE");
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if (cp) {
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const char *extra_args = ivl_design_flag(des, "VVP_EXTRA_ARGS");
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if (!extra_args)
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extra_args = "";
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fprintf(vvp_out, "#! %s%s\n", cp, extra_args);
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#if !defined(__MINGW32__)
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fchmod(fileno(vvp_out), 0755);
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#endif
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}
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fprintf(vvp_out, ":ivl_version \"" VERSION "\"");
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/* I am assuming that a base release will have a blank tag. */
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if (*VERSION_TAG != 0) {
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fprintf(vvp_out, " \"(" VERSION_TAG ")\"");
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}
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fprintf(vvp_out, ";\n");
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}
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__inline__ static void draw_module_declarations(ivl_design_t des)
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{
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const char*cp = ivl_design_flag(des, "VPI_MODULE_LIST");
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while (*cp) {
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const char*comma = strchr(cp, ',');
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if (comma == 0)
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comma = cp + strlen(cp);
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char*buffer = malloc(comma - cp + 1);
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strncpy(buffer, cp, comma-cp);
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buffer[comma-cp] = 0;
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fprintf(vvp_out, ":vpi_module \"%s\";\n", buffer);
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free(buffer);
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cp = comma;
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if (*cp) cp += 1;
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}
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}
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int allocate_flag(void)
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{
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int idx;
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for (idx = 0 ; idx < FLAGS_COUNT ; idx += 1) {
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int word = idx / 32;
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uint32_t mask = 1 << (idx%32);
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if (allocate_flag_mask[word] & mask)
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continue;
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allocate_flag_mask[word] |= mask;
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return idx;
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}
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fprintf(stderr, "vvp.tgt error: Exceeded the maximum flag count of "
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"%d during VVP code generation.\n", FLAGS_COUNT);
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exit(1);
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}
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void clr_flag(int idx)
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{
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if (idx < 8) return;
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assert(idx < FLAGS_COUNT);
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int word = idx / 32;
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uint32_t mask = 1 << (idx%32);
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assert(allocate_flag_mask[word] & mask);
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allocate_flag_mask[word] &= ~mask;
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}
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static void process_debug_string(const char*debug_string)
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{
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const char*cp = debug_string;
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debug_draw = 0;
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while (*cp) {
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const char*tail = strchr(cp, ',');
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if (tail == 0)
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tail = cp + strlen(cp);
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size_t len = tail - cp;
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if (len == 4 && strncmp(cp,"draw", 4)==0) {
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debug_draw = 1;
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}
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while (*tail == ',')
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tail += 1;
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cp = tail;
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}
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}
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int target_design(ivl_design_t des)
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{
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int rc;
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ivl_scope_t *roots;
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unsigned nroots, i;
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unsigned size;
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unsigned idx;
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const char*path = ivl_design_flag(des, "-o");
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/* Use -pfileline to determine if file and line information is
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* printed for procedural statements. (e.g. -pfileline=1).
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* The default is no file/line information will be included. */
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const char*fileline = ivl_design_flag(des, "fileline");
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const char*debug_flags = ivl_design_flag(des, "debug_flags");
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process_debug_string(debug_flags);
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assert(path);
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/* Check to see if file/line information should be included. */
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if (strcmp(fileline, "") != 0) {
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char *eptr;
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long fl_value = strtol(fileline, &eptr, 0);
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/* Nothing usable in the file/line string. */
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if (fileline == eptr) {
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fprintf(stderr, "vvp.tgt error: Unable to extract file/line "
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"information from string: %s\n", fileline);
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return 1;
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}
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/* Extra stuff at the end. */
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if (*eptr != 0) {
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fprintf(stderr, "vvp.tgt error: Extra characters '%s' "
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"included at end of file/line string: %s\n",
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eptr, fileline);
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return 1;
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}
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/* The file/line flag must be positive. */
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if (fl_value < 0) {
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fprintf(stderr, "vvp.tgt error: File/line flag (%ld) must "
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"be positive.\n", fl_value);
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return 1;
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}
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show_file_line = fl_value > 0;
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}
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#ifdef HAVE_FOPEN64
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vvp_out = fopen64(path, "w");
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#else
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vvp_out = fopen(path, "w");
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#endif
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if (vvp_out == 0) {
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perror(path);
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return -1;
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}
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vvp_errors = 0;
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draw_execute_header(des);
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fprintf(vvp_out, ":ivl_delay_selection \"%s\";\n",
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ivl_design_delay_sel(des));
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{ int pre = ivl_design_time_precision(des);
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char sign = '+';
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if (pre < 0) {
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pre = -pre;
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sign = '-';
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}
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fprintf(vvp_out, ":vpi_time_precision %c %d;\n", sign, pre);
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}
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draw_module_declarations(des);
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/* This causes all structural records to be drawn. */
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ivl_design_roots(des, &roots, &nroots);
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for (i = 0; i < nroots; i++)
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draw_scope(roots[i], 0);
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/* Finish up any modpaths that are not yet emitted. */
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cleanup_modpath();
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rc = ivl_design_process(des, draw_process, 0);
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/* Dump the file name table. */
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size = ivl_file_table_size();
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fprintf(vvp_out, "# The file index is used to find the file name in "
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"the following table.\n:file_names %u;\n", size);
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for (idx = 0; idx < size; idx++) {
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fprintf(vvp_out, " \"%s\";\n", ivl_file_table_item(idx));
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}
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fclose(vvp_out);
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EOC_cleanup_drivers();
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return rc + vvp_errors;
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}
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const char* target_query(const char*key)
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{
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if (strcmp(key,"version") == 0)
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return version_string;
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return 0;
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}
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