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// Copyright 2009 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 "go.h"
/*
* architecture-independent object file output
*/
void
dumpobj(void)
{
bout = Bopen(outfile, OWRITE);
if(bout == nil)
fatal("cant open %s", outfile);
Bprint(bout, "%s\n", thestring);
Bprint(bout, " exports automatically generated from\n");
Bprint(bout, " %s in package \"%s\"\n", curio.infile, package);
dumpexport();
Bprint(bout, "\n!\n");
outhist(bout);
// add nil plist w AEND to catch
// auto-generated trampolines, data
newplist();
dumpglobls();
dumptypestructs();
dumpdata();
dumpfuncs();
Bterm(bout);
}
void
dumpglobls(void)
{
Node *n;
NodeList *l;
// add globals
for(l=externdcl; l; l=l->next) {
n = l->n;
if(n->op != ONAME)
continue;
if(n->type == T)
fatal("external %#N nil type\n", n);
if(n->class == PFUNC)
continue;
dowidth(n->type);
// TODO(rsc): why is this not s/n->sym->def/n/ ?
ggloblnod(n->sym->def, n->type->width);
}
}
void
Bputdot(Biobuf *b)
{
// put out middle dot ·
Bputc(b, 0xc2);
Bputc(b, 0xb7);
}
void
outhist(Biobuf *b)
{
Hist *h;
char *p, *q, *op;
int n;
for(h = hist; h != H; h = h->link) {
p = h->name;
op = 0;
if(p && p[0] != '/' && h->offset == 0 && pathname && pathname[0] == '/') {
op = p;
p = pathname;
}
while(p) {
q = utfrune(p, '/');
if(q) {
n = q-p;
if(n == 0)
n = 1; // leading "/"
q++;
} else {
n = strlen(p);
q = 0;
}
if(n)
zfile(b, p, n);
p = q;
if(p == 0 && op) {
p = op;
op = 0;
}
}
zhist(b, h->line, h->offset);
}
}
void
ieeedtod(uint64 *ieee, double native)
{
double fr, ho, f;
int exp;
uint32 h, l;
if(native < 0) {
ieeedtod(ieee, -native);
*ieee |= 1ULL<<63;
return;
}
if(native == 0) {
*ieee = 0;
return;
}
fr = frexp(native, &exp);
f = 2097152L; /* shouldnt use fp constants here */
fr = modf(fr*f, &ho);
h = ho;
h &= 0xfffffL;
h |= (exp+1022L) << 20;
f = 65536L;
fr = modf(fr*f, &ho);
l = ho;
l <<= 16;
l |= (int32)(fr*f);
*ieee = ((uint64)h << 32) | l;
}
int
duint8(Sym *s, int off, uint8 v)
{
return duintxx(s, off, v, 1);
}
int
duint16(Sym *s, int off, uint16 v)
{
return duintxx(s, off, v, 2);
}
int
duint32(Sym *s, int off, uint32 v)
{
return duintxx(s, off, v, 4);
}
int
duint64(Sym *s, int off, uint64 v)
{
return duintxx(s, off, v, 8);
}
int
duintptr(Sym *s, int off, uint64 v)
{
return duintxx(s, off, v, widthptr);
}
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