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// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
#include "a.h"
/*
* Helpers for building cmd/gc.
*/
// gcopnames creates opnames.h from go.h.
// It finds the OXXX enum, pulls out all the constants
// from OXXX to OEND, and writes a table mapping
// op to string.
void
gcopnames(char *dir, char *file)
{
char *p, *q;
int i, j, end;
Buf in, b, out;
Vec lines, fields;
binit(&in);
binit(&b);
binit(&out);
vinit(&lines);
vinit(&fields);
bwritestr(&out, bprintf(&b, "// auto generated by go tool dist\n"));
bwritestr(&out, bprintf(&b, "static char *opnames[] = {\n"));
readfile(&in, bprintf(&b, "%s/go.h", dir));
splitlines(&lines, bstr(&in));
i = 0;
while(i<lines.len && !contains(lines.p[i], "OXXX"))
i++;
end = 0;
for(; i<lines.len && !end; i++) {
p = xstrstr(lines.p[i], "//");
if(p != nil)
*p = '\0';
end = contains(lines.p[i], "OEND");
splitfields(&fields, lines.p[i]);
for(j=0; j<fields.len; j++) {
q = fields.p[j];
if(*q == 'O')
q++;
p = q+xstrlen(q)-1;
if(*p == ',')
*p = '\0';
bwritestr(&out, bprintf(&b, " [O%s] = \"%s\",\n", q, q));
}
}
bwritestr(&out, bprintf(&b, "};\n"));
writefile(&out, file, 0);
bfree(&in);
bfree(&b);
bfree(&out);
vfree(&lines);
vfree(&fields);
}
// mkenam reads [568].out.h and writes enam.c
// The format is much the same as the Go opcodes above.
void
mkenam(char *dir, char *file)
{
int i, ch;
Buf in, b, out;
Vec lines;
char *p;
binit(&b);
binit(&in);
binit(&out);
vinit(&lines);
ch = dir[xstrlen(dir)-2];
bprintf(&b, "%s/../%cl/%c.out.h", dir, ch, ch);
readfile(&in, bstr(&b));
splitlines(&lines, bstr(&in));
bwritestr(&out, "char* anames[] = {\n");
for(i=0; i<lines.len; i++) {
if(hasprefix(lines.p[i], "\tA")) {
p = xstrstr(lines.p[i], ",");
if(p)
*p = '\0';
p = xstrstr(lines.p[i], "\n");
if(p)
*p = '\0';
p = lines.p[i] + 2;
bwritestr(&out, bprintf(&b, "\t\"%s\",\n", p));
}
}
bwritestr(&out, "};\n");
writefile(&out, file, 0);
bfree(&b);
bfree(&in);
bfree(&out);
vfree(&lines);
}
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