141 lines
3.2 KiB
C
141 lines
3.2 KiB
C
#include "mcg.h"
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#include <errno.h>
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#include <unistd.h>
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static const char* tracechars = NULL;
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FILE* outputfile = NULL;
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FILE* dominance_dot_file = NULL;
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FILE* cfg_dot_file = NULL;
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bool tracing(char k)
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{
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if (k == '!')
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return true;
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if (!tracechars)
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return false;
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return strchr(tracechars, k);
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}
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void tracef(char k, const char* fmt, ...)
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{
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va_list ap;
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if (tracing(k))
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{
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va_start(ap, fmt);
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vfprintf(stderr, fmt, ap);
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va_end(ap);
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}
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}
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static bool find_procedures_cb(struct symbol* symbol, void* user)
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{
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if (symbol->proc)
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procedure_compile(symbol->proc);
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return false;
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}
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int main(int argc, char* const argv[])
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{
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const char* inputfilename = NULL;
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const char* outputfilename = NULL;
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FILE* output;
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int i;
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program_name = argv[0];
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opterr = 1;
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for (;;)
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{
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int c = getopt(argc, argv, "d:D:C:o:");
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if (c == -1)
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break;
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switch (c)
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{
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case 'C':
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cfg_dot_file = fopen(optarg, "wb");
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if (!cfg_dot_file)
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fatal("couldn't open output file '%s': %s",
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optarg, strerror(errno));
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fprintf(cfg_dot_file, "digraph {\n");
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break;
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case 'D':
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dominance_dot_file = fopen(optarg, "wb");
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if (!dominance_dot_file)
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fatal("couldn't open output file '%s': %s",
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optarg, strerror(errno));
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fprintf(dominance_dot_file, "digraph {\n");
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break;
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case 'd':
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tracechars = optarg;
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break;
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case 'o':
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if (outputfilename)
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fatal("already specified an output file");
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outputfilename = optarg;
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break;
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}
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}
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for (i = optind; i < argc; i++)
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{
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if (inputfilename)
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fatal("unexpected argument '%s'", argv[i]);
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inputfilename = argv[i];
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}
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symbol_init();
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if (!EM_open((char*) inputfilename))
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fatal("couldn't open input '%s': %s",
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inputfilename ? inputfilename : "<stdin>", EM_error);
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if (outputfilename)
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{
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outputfile = fopen(outputfilename, "wb");
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if (!outputfile)
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fatal("couldn't open output '%s': %s",
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outputfilename, strerror(errno));
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}
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else
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outputfile = stdout;
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fprintf(outputfile, ".sect .text\n.sect .rom\n.sect .data\n.sect .bss\n");
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/* Reads in the EM, outputs the data sections, parses any code and
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* generates IR trees. */
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parse_em();
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/* For every procedure, go ahead and do the compilation proper. We do this
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* now so that we know that all the data has been read correctly and our
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* symbol table is complete (we may need to refer to it). */
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symbol_walk(find_procedures_cb, NULL);
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if (outputfilename)
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fclose(outputfile);
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EM_close();
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if (cfg_dot_file)
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{
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fprintf(cfg_dot_file, "}\n");
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fclose(cfg_dot_file);
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}
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if (dominance_dot_file)
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{
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fprintf(dominance_dot_file, "}\n");
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fclose(dominance_dot_file);
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}
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return 0;
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}
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/* vim: set sw=4 ts=4 expandtab : */
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