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Fix the horror of the startup code; now uses getopt and stuff and the debug

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flags can be set as an option.
This commit is contained in:
David Given 2016-10-04 22:36:01 +02:00
parent ac063a6f54
commit 249855ed23
1 changed files with 30 additions and 18 deletions
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48
mach/proto/mcg/main.c
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@ -1,22 +1,14 @@
#include "mcg.h"
#include <unistd.h>
static const char* tracechars = NULL;
bool tracing(char k)
{
switch (k)
{
case 0: return true;
case 'S': return true;
case 'E': return false;
case 'G': return true;
case '0': return false;
case '1': return false;
case '2': return false;
case '3': return false;
case '4': return false;
case '5': return false;
case 'I': return true;
default: return true;
}
if (!tracechars)
return false;
return index(tracechars, k);
}
void tracef(char k, const char* fmt, ...)
@ -38,12 +30,32 @@ static bool find_procedures_cb(struct symbol* symbol, void* user)
return false;
}
int main(int argc, char* argv[])
int main(int argc, char* const argv[])
{
program_name = argv[0];
opterr = 1;
for (;;)
{
int c = getopt(argc, argv, "-d:");
if (c == -1)
break;
switch (c)
{
case 'd':
tracechars = optarg;
break;
case 1:
fatal("unexpected argument '%s'", optarg);
}
}
symbol_init();
if (!EM_open(argv[1]))
fatal("Couldn't open input file: %s", EM_error);
if (!EM_open(NULL))
fatal("couldn't open stdin: %s", EM_error);
/* Reads in the EM, outputs the data sections, parses any code and
* generates IR trees. */