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#include "all.h"
#include "config.h"
#include <ctype.h>
#include <getopt.h>
Target T;
extern Target T_amd64_sysv;
extern Target T_arm64;
static struct TMap {
char *name;
Target *T;
} tmap[] = {
{ "amd64_sysv", &T_amd64_sysv },
{ "arm64", &T_arm64 },
{ 0, 0 }
};
enum Asm {
Gasmacho,
Gaself,
};
char debug['Z'+1] = {
['P'] = 0, /* parsing */
['M'] = 0, /* memory optimization */
['N'] = 0, /* ssa construction */
['C'] = 0, /* copy elimination */
['F'] = 0, /* constant folding */
['A'] = 0, /* abi lowering */
['I'] = 0, /* instruction selection */
['L'] = 0, /* liveness */
['S'] = 0, /* spilling */
['R'] = 0, /* reg. allocation */
};
static FILE *outf;
static int dbg;
static void
data(Dat *d)
{
if (dbg)
return;
if (d->type == DEnd) {
fputs("/* end data */\n\n", outf);
freeall();
}
gasemitdat(d, outf);
}
static void
func(Fn *fn)
{
uint n;
if (dbg)
fprintf(stderr, "**** Function %s ****", fn->name);
if (debug['P']) {
fprintf(stderr, "\n> After parsing:\n");
printfn(fn, stderr);
}
fillrpo(fn);
fillpreds(fn);
filluse(fn);
memopt(fn);
filluse(fn);
ssa(fn);
filluse(fn);
ssacheck(fn);
fillalias(fn);
loadopt(fn);
filluse(fn);
ssacheck(fn);
copy(fn);
filluse(fn);
fold(fn);
T.abi(fn);
fillpreds(fn);
filluse(fn);
T.isel(fn);
fillrpo(fn);
filllive(fn);
fillloop(fn);
fillcost(fn);
spill(fn);
rega(fn);
fillrpo(fn);
simpljmp(fn);
fillpreds(fn);
fillrpo(fn);
assert(fn->rpo[0] == fn->start);
for (n=0;; n++)
if (n == fn->nblk-1) {
fn->rpo[n]->link = 0;
break;
} else
fn->rpo[n]->link = fn->rpo[n+1];
if (!dbg) {
T.emitfn(fn, outf);
fprintf(outf, "/* end function %s */\n\n", fn->name);
} else
fprintf(stderr, "\n");
freeall();
}
int
main(int ac, char *av[])
{
struct TMap *tm;
FILE *inf, *hf;
char *f, *sep;
int c, asm;
asm = Defasm;
T = Deftgt;
outf = stdout;
while ((c = getopt(ac, av, "hd:o:G:t:")) != -1)
switch (c) {
case 'd':
for (; *optarg; optarg++)
if (isalpha(*optarg)) {
debug[toupper(*optarg)] = 1;
dbg = 1;
}
break;
case 'o':
if (strcmp(optarg, "-") != 0)
outf = fopen(optarg, "w");
break;
case 't':
for (tm=tmap;; tm++) {
if (!tm->name) {
fprintf(stderr, "unknown target '%s'\n", optarg);
exit(1);
}
if (strcmp(optarg, tm->name) == 0) {
T = *tm->T;
break;
}
}
break;
case 'G':
if (strcmp(optarg, "e") == 0)
asm = Gaself;
else if (strcmp(optarg, "m") == 0)
asm = Gasmacho;
else {
fprintf(stderr, "unknown gas flavor '%s'\n", optarg);
exit(1);
}
break;
case 'h':
default:
hf = c != 'h' ? stderr : stdout;
fprintf(hf, "%s [OPTIONS] {file.ssa, -}\n", av[0]);
fprintf(hf, "\t%-11s prints this help\n", "-h");
fprintf(hf, "\t%-11s output to file\n", "-o file");
fprintf(hf, "\t%-11s generate for a target among:\n", "-t <target>");
fprintf(hf, "\t%-11s ", "");
for (tm=tmap, sep=""; tm->name; tm++, sep=", ")
fprintf(hf, "%s%s", sep, tm->name);
fprintf(hf, "\n");
fprintf(hf, "\t%-11s generate gas (e) or osx (m) asm\n", "-G {e,m}");
fprintf(hf, "\t%-11s dump debug information\n", "-d <flags>");
exit(c != 'h');
}
switch (asm) {
case Gaself:
gasloc = ".L";
gassym = "";
break;
case Gasmacho:
gasloc = "L";
gassym = "_";
break;
}
do {
f = av[optind];
if (!f || strcmp(f, "-") == 0) {
inf = stdin;
f = "-";
} else {
inf = fopen(f, "r");
if (!inf) {
fprintf(stderr, "cannot open '%s'\n", f);
exit(1);
}
}
parse(inf, f, data, func);
} while (++optind < ac);
if (!dbg)
gasemitfin(outf);
exit(0);
}
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