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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 runtime.
*/
// mkzversion writes zversion.go:
//
// package runtime
// const defaultGoroot = <goroot>
// const theVersion = <version>
//
void
mkzversion(char *dir, char *file)
{
Buf b, out;
USED(dir);
binit(&b);
binit(&out);
bwritestr(&out, bprintf(&b,
"// auto generated by go tool dist\n"
"\n"
"package runtime\n"
"\n"
"const defaultGoroot = `%s`\n"
"const theVersion = `%s`\n"
"var buildVersion = theVersion\n", goroot_final, goversion));
writefile(&out, file, 0);
bfree(&b);
bfree(&out);
}
// mkzexperiment writes zaexperiment.h (sic):
//
// #define GOEXPERIMENT "experiment string"
//
void
mkzexperiment(char *dir, char *file)
{
Buf b, out, exp;
USED(dir);
binit(&b);
binit(&out);
binit(&exp);
xgetenv(&exp, "GOEXPERIMENT");
bwritestr(&out, bprintf(&b,
"// auto generated by go tool dist\n"
"\n"
"#define GOEXPERIMENT \"%s\"\n", bstr(&exp)));
writefile(&out, file, 0);
bfree(&b);
bfree(&out);
bfree(&exp);
}
#define MAXWINCB 2000 /* maximum number of windows callbacks allowed */
// mkzsys writes zsys_$GOOS_$GOARCH.s,
// which contains arch or os specific asm code.
//
void
mkzsys(char *dir, char *file)
{
int i;
Buf out;
USED(dir);
binit(&out);
bwritestr(&out, "// auto generated by go tool dist\n\n");
if(streq(goos, "linux")) {
bwritestr(&out, "// +build !android\n\n");
}
if(streq(goos, "windows")) {
bwritef(&out,
"// runtime·callbackasm is called by external code to\n"
"// execute Go implemented callback function. It is not\n"
"// called from the start, instead runtime·compilecallback\n"
"// always returns address into runtime·callbackasm offset\n"
"// appropriately so different callbacks start with different\n"
"// CALL instruction in runtime·callbackasm. This determines\n"
"// which Go callback function is executed later on.\n"
"TEXT runtime·callbackasm(SB),7,$0\n");
for(i=0; i<MAXWINCB; i++) {
bwritef(&out, "\tCALL\truntime·callbackasm1(SB)\n");
}
bwritef(&out, "\tRET\n");
}
writefile(&out, file, 0);
bfree(&out);
}
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