// walk symtab accumulating path names for use by pc/ln table.
// don't need the full generality of the z entry history stack because
// there are no includes in go (and only sensible includes in our c);
// assume code only appear in top-level files.
static void
dosrcline(Sym *sym)
{
static byte srcbuf[1000];
static struct {
String srcstring;
int32 aline;
int32 delta;
} files[200];
static int32 incstart;
static int32 nfunc, nfile, nhist;
Func *f;
int32 i;
switch(sym->symtype) {
case 't':
case 'T':
if(runtime·strcmp(sym->name, (byte*)"etext") == 0)
break;
f = &func[nfunc++];
// find source file
for(i = 0; i < nfile - 1; i++) {
if (files[i+1].aline > f->ln0)
break;
}
f->src = files[i].srcstring;
f->ln0 -= files[i].delta;
break;
case 'z':
if(sym->value == 1) {
// entry for main source file for a new object.
makepath(srcbuf, sizeof srcbuf, sym->name+1);
nhist = 0;
nfile = 0;
if(nfile == nelem(files))
return;
files[nfile].srcstring = runtime·gostring(srcbuf);
files[nfile].aline = 0;
files[nfile++].delta = 0;
} else {
// push or pop of included file.
makepath(srcbuf, sizeof srcbuf, sym->name+1);
if(srcbuf[0] != '\0') {
if(nhist++ == 0)
incstart = sym->value;
if(nhist == 0 && nfile < nelem(files)) {
// new top-level file
files[nfile].srcstring = runtime·gostring(srcbuf);
files[nfile].aline = sym->value;
// this is "line 0"
files[nfile++].delta = sym->value - 1;
}
}else{
if(--nhist == 0)
files[nfile-1].delta += sym->value - incstart;
}
}
}
}
String
signame(int32 sig)
{
if(sig < 0 || sig >= NSIG)
return emptystring;
return gostring((byte*)sigtab[sig].name);
}
static void
_cgo_panic_internal(byte *p)
{
String s;
Eface err;
s = runtime·gostring(p);
·cgoStringToEface(s, &err);
runtime·panic(err);
}
static void
dofunc(Sym *sym)
{
Func *f;
switch(sym->symtype) {
case 't':
case 'T':
case 'l':
case 'L':
if(strcmp(sym->name, (byte*)"etext") == 0)
break;
if(func == nil) {
nfunc++;
break;
}
f = &func[nfunc++];
f->name = gostring(sym->name);
f->entry = sym->value;
if(sym->symtype == 'L' || sym->symtype == 'l')
f->frame = -sizeof(uintptr);
break;
case 'm':
if(nfunc > 0 && func != nil)
func[nfunc-1].frame += sym->value;
break;
case 'p':
if(nfunc > 0 && func != nil) {
f = &func[nfunc-1];
// args counts 32-bit words.
// sym->value is the arg's offset.
// don't know width of this arg, so assume it is 64 bits.
if(f->args < sym->value/4 + 2)
f->args = sym->value/4 + 2;
}
break;
case 'f':
if(fname == nil) {
if(sym->value >= nfname)
nfname = sym->value+1;
break;
}
fname[sym->value] = sym->name;
break;
}
}
void
·_Cfunc_GoString(int8 *p, String s)
{
s = runtime·gostring((byte*)p);
FLUSH(&s);
}
