mirror of
https://github.com/golang/go
synced 2024-11-20 06:54:42 -07:00
106 lines
2.1 KiB
C
106 lines
2.1 KiB
C
// Copyright 2012 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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#include "a.h"
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/*
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* Helpers for building cmd/gc.
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*/
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// gcopnames creates opnames.h from go.h.
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// It finds the OXXX enum, pulls out all the constants
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// from OXXX to OEND, and writes a table mapping
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// op to string.
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void
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gcopnames(char *dir, char *file)
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{
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char *p, *q;
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int i, j, end;
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Buf in, b, out;
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Vec lines, fields;
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binit(&in);
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binit(&b);
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binit(&out);
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vinit(&lines);
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vinit(&fields);
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bwritestr(&out, bprintf(&b, "// auto generated by go tool dist\n"));
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bwritestr(&out, bprintf(&b, "static char *opnames[] = {\n"));
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readfile(&in, bprintf(&b, "%s/go.h", dir));
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splitlines(&lines, bstr(&in));
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i = 0;
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while(i<lines.len && !contains(lines.p[i], "OXXX"))
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i++;
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end = 0;
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for(; i<lines.len && !end; i++) {
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p = xstrstr(lines.p[i], "//");
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if(p != nil)
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*p = '\0';
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end = contains(lines.p[i], "OEND");
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splitfields(&fields, lines.p[i]);
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for(j=0; j<fields.len; j++) {
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q = fields.p[j];
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if(*q == 'O')
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q++;
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p = q+xstrlen(q)-1;
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if(*p == ',')
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*p = '\0';
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bwritestr(&out, bprintf(&b, " [O%s] = \"%s\",\n", q, q));
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}
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}
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bwritestr(&out, bprintf(&b, "};\n"));
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writefile(&out, file, 0);
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bfree(&in);
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bfree(&b);
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bfree(&out);
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vfree(&lines);
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vfree(&fields);
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}
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// mkenam reads [568].out.h and writes enam.c
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// The format is much the same as the Go opcodes above.
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void
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mkenam(char *dir, char *file)
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{
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int i, ch;
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Buf in, b, out;
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Vec lines;
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char *p;
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binit(&b);
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binit(&in);
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binit(&out);
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vinit(&lines);
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ch = dir[xstrlen(dir)-2];
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bprintf(&b, "%s/../%cl/%c.out.h", dir, ch, ch);
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readfile(&in, bstr(&b));
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splitlines(&lines, bstr(&in));
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bwritestr(&out, "char* anames[] = {\n");
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for(i=0; i<lines.len; i++) {
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if(hasprefix(lines.p[i], "\tA")) {
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p = xstrstr(lines.p[i], ",");
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if(p)
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*p = '\0';
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p = xstrstr(lines.p[i], "\n");
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if(p)
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*p = '\0';
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p = lines.p[i] + 2;
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bwritestr(&out, bprintf(&b, "\t\"%s\",\n", p));
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}
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}
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bwritestr(&out, "};\n");
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writefile(&out, file, 0);
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bfree(&b);
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bfree(&in);
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bfree(&out);
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vfree(&lines);
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}
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