int32
runtime·postnote(int32 pid, int8* msg)
{
int32 fd, len;
uint8 buf[128];
uint8 tmp[16];
uint8 *p, *q;
runtime·memclr(buf, sizeof buf);
/* build path string /proc/pid/note */
q = tmp;
p = buf;
runtime·itoa(pid, tmp, sizeof tmp);
runtime·memmove((void*)p, (void*)"/proc/", 6);
for(p += 6; *p++ = *q++; );
p--;
runtime·memmove((void*)p, (void*)"/note", 5);
fd = runtime·open((int8*)buf, OWRITE, 0);
if(fd < 0)
return -1;
len = runtime·findnull((byte*)msg);
if(runtime·write(fd, msg, len) != len) {
runtime·close(fd);
return -1;
}
runtime·close(fd);
return 0;
}
runtime·getenv(int8 *s)
{
int32 fd, n, r;
intgo len;
byte file[128];
byte *p;
len = runtime·findnull((byte*)s);
if(len > sizeof file-6)
return nil;
runtime·memclr(file, sizeof file);
runtime·memmove((void*)file, (void*)"/env/", 5);
runtime·memmove((void*)(file+5), (void*)s, len);
fd = runtime·open((int8*)file, OREAD, 0);
if(fd < 0)
return nil;
n = runtime·seek(fd, 0, 2);
p = runtime·malloc(n+1);
r = runtime·pread(fd, p, n, 0);
runtime·close(fd);
if(r < 0)
return nil;
return p;
}
runtime·getenv(int8 *s)
{
int32 i, j;
intgo len;
byte *v, *bs;
String* envv;
int32 envc;
bs = (byte*)s;
len = runtime·findnull(bs);
envv = (String*)syscall·envs.array;
envc = syscall·envs.len;
for(i=0; i<envc; i++) {
if(envv[i].len <= len)
continue;
v = envv[i].str;
for(j=0; j<len; j++)
if(bs[j] != v[j])
goto nomatch;
if(v[len] != '=')
goto nomatch;
return v+len+1;
nomatch:
;
}
return nil;
}
static int32
getproccount(void)
{
int32 fd, rd, cnt, cpustrlen;
byte *cpustr, *pos, *bufpos;
byte buf[256];
fd = runtime·open((byte*)"/proc/stat", O_RDONLY|O_CLOEXEC, 0);
if(fd == -1)
return 1;
cnt = 0;
bufpos = buf;
cpustr = (byte*)"\ncpu";
cpustrlen = runtime·findnull(cpustr);
for(;;) {
rd = runtime·read(fd, bufpos, sizeof(buf)-cpustrlen);
if(rd == -1)
break;
bufpos[rd] = 0;
for(pos=buf; pos=runtime·strstr(pos, cpustr); cnt++, pos++) {
}
if(rd < cpustrlen)
break;
runtime·memmove(buf, bufpos+rd-cpustrlen+1, cpustrlen-1);
bufpos = buf+cpustrlen-1;
}
runtime·close(fd);
return cnt ? cnt : 1;
}
// put together the path name for a z entry.
// the f entries have been accumulated into fname already.
static void
makepath(byte *buf, int32 nbuf, byte *path)
{
int32 n, len;
byte *p, *ep, *q;
if(nbuf <= 0)
return;
p = buf;
ep = buf + nbuf;
*p = '\0';
for(;;) {
if(path[0] == 0 && path[1] == 0)
break;
n = (path[0]<<8) | path[1];
path += 2;
if(n >= nfname)
break;
q = fname[n];
len = runtime·findnull(q);
if(p+1+len >= ep)
break;
if(p > buf && p[-1] != '/')
*p++ = '/';
runtime·memmove(p, q, len+1);
p += len;
}
}
String
runtime·gostringnocopy ( byte *str )
{
String s;
#line 100 "/home/pi/go_build/go/src/pkg/runtime/string.goc"
s.str = str;
s.len = runtime·findnull ( str ) ;
return s;
}
String
runtime·gostringnocopy ( byte *str )
{
String s;
#line 3415 "C:\Go\src\pkg\runtime\string.goc"
s.str = str;
s.len = runtime·findnull ( str ) ;
return s;
}
String
runtime·gostringnocopy ( byte *str )
{
String s;
#line 99 "/home/14/ren/source/golang/go/src/pkg/runtime/string.goc"
s.str = str;
s.len = runtime·findnull ( str ) ;
return s;
}
String
runtime·gostring ( byte *str )
{
intgo l;
String s;
#line 65 "/home/14/ren/source/golang/go/src/pkg/runtime/string.goc"
l = runtime·findnull ( str ) ;
s = gostringsize ( l ) ;
runtime·memmove ( s.str , str , l ) ;
return s;
}
String
runtime·gostring ( byte *str )
{
intgo l;
String s;
#line 67 "/home/pi/go_build/go/src/pkg/runtime/string.goc"
l = runtime·findnull ( str ) ;
s = gostringsize ( l ) ;
runtime·memmove ( s.str , str , l ) ;
return s;
}
String
runtime·gostring ( byte *str )
{
int32 l;
String s;
#line 3382 "C:\Go\src\pkg\runtime\string.goc"
l = runtime·findnull ( str ) ;
s = gostringsize ( l ) ;
runtime·memmove ( s.str , str , l ) ;
return s;
}
void
runtime·gonote(void*, byte *s)
{
uint8 buf[128];
int32 l;
l = runtime·findnull(s);
if(l > 4 && runtime·mcmp(s, (byte*)"sys:", 4) == 0) {
runtime·memclr(buf, sizeof buf);
runtime·memmove((void*)buf, (void*)s, runtime·findnull(s));
runtime·exitstatus = (int8*)buf;
goexitsall();
runtime·noted(NDFLT);
}
if(runtime·exitstatus)
runtime·exits(runtime·exitstatus);
if(runtime·strcmp(s, (byte*)"gointr") == 0)
runtime·noted(NCONT);
runtime·noted(NDFLT);
}
void
runtime·badsignal(int32 sig)
{
if (sig == SIGPROF) {
return; // Ignore SIGPROFs intended for a non-Go thread.
}
runtime·write(2, badsignal, sizeof badsignal - 1);
if (0 <= sig && sig < NSIG) {
// Call runtime·findnull dynamically to circumvent static stack size check.
static int32 (*findnull)(byte*) = runtime·findnull;
runtime·write(2, runtime·sigtab[sig].name, findnull((byte*)runtime·sigtab[sig].name));
}
runtime·write(2, "\n", 1);
runtime·exit(1);
}
int32
runtime·sighandler(void *v, int8 *note, G *gp)
{
uintptr *sp;
SigTab *t;
bool crash;
Ureg *ureg;
intgo len, n;
int32 sig, flags;
ureg = (Ureg*)v;
// The kernel will never pass us a nil note or ureg so we probably
// made a mistake somewhere in runtime·sigtramp.
if(ureg == nil || note == nil) {
runtime·printf("sighandler: ureg %p note %p\n", ureg, note);
goto Throw;
}
// Check that the note is no more than ERRMAX bytes (including
// the trailing NUL). We should never receive a longer note.
len = runtime·findnull((byte*)note);
if(len > ERRMAX-1) {
runtime·printf("sighandler: note is longer than ERRMAX\n");
goto Throw;
}
// See if the note matches one of the patterns in runtime·sigtab.
// Notes that do not match any pattern can be handled at a higher
// level by the program but will otherwise be ignored.
flags = SigNotify;
for(sig = 0; sig < nelem(runtime·sigtab); sig++) {
t = &runtime·sigtab[sig];
n = runtime·findnull((byte*)t->name);
if(len < n)
continue;
if(runtime·strncmp((byte*)note, (byte*)t->name, n) == 0) {
flags = t->flags;
break;
}
}
if(flags & SigGoExit)
runtime·exits(note+9); // Strip "go: exit " prefix.
if(flags & SigPanic) {
// Copy the error string from sigtramp's stack into m->notesig so
// we can reliably access it from the panic routines.
runtime·memmove(g->m->notesig, note, len+1);
gp->sig = sig;
gp->sigpc = ureg->ip;
// Only push runtime·sigpanic if PC != 0.
//
// If PC == 0, probably panicked because of a call to a nil func.
// Not pushing that onto SP will make the trace look like a call
// to runtime·sigpanic instead. (Otherwise the trace will end at
// runtime·sigpanic and we won't get to see who faulted).
if(ureg->ip != 0) {
sp = (uintptr*)ureg->sp;
*--sp = ureg->ip;
ureg->sp = (uint64)sp;
}
ureg->ip = (uintptr)runtime·sigpanic;
return NCONT;
}
if(flags & SigNotify) {
// TODO(ality): See if os/signal wants it.
//if(runtime·sigsend(...))
// return NCONT;
}
if(flags & SigKill)
goto Exit;
if(!(flags & SigThrow))
return NCONT;
Throw:
g->m->throwing = 1;
g->m->caughtsig = gp;
runtime·startpanic();
runtime·printf("%s\n", note);
runtime·printf("PC=%X\n", ureg->ip);
runtime·printf("\n");
if(runtime·gotraceback(&crash)) {
runtime·goroutineheader(gp);
runtime·traceback(ureg->ip, ureg->sp, 0, gp);
runtime·tracebackothers(gp);
runtime·printf("\n");
runtime·dumpregs(ureg);
}
if(crash)
runtime·crash();
Exit:
runtime·goexitsall(note);
runtime·exits(note);
return NDFLT; // not reached
}
void
runtime·prints(int8 *s)
{
runtime·write(2, s, runtime·findnull((byte*)s));
}
int32
runtime·sighandler(void *v, int8 *s, G *gp)
{
bool crash;
Ureg *ureg;
uintptr *sp;
SigTab *sig, *nsig;
intgo len, i;
if(!s)
return NCONT;
len = runtime·findnull((byte*)s);
if(len <= 4 || runtime·mcmp((byte*)s, (byte*)"sys:", 4) != 0)
return NDFLT;
nsig = nil;
sig = runtime·sigtab;
for(i=0; i < NSIG; i++) {
if(runtime·strstr((byte*)s, (byte*)sig->name)) {
nsig = sig;
break;
}
sig++;
}
if(nsig == nil)
return NDFLT;
ureg = v;
if(nsig->flags & SigPanic) {
if(gp == nil || m->notesig == 0)
goto Throw;
// Copy the error string from sigtramp's stack into m->notesig so
// we can reliably access it from the panic routines. We can't use
// runtime·memmove here since it will use SSE instructions for big
// copies. The Plan 9 kernel doesn't allow floating point in note
// handlers.
//
// TODO(ality): revert back to memmove when the kernel is fixed.
if(len >= ERRMAX)
len = ERRMAX-1;
for(i = 0; i < len; i++)
m->notesig[i] = s[i];
m->notesig[i] = '\0';
gp->sig = i;
gp->sigpc = ureg->pc;
// Only push runtime·sigpanic if ureg->pc != 0.
// If ureg->pc == 0, probably panicked because of a
// call to a nil func. Not pushing that onto sp will
// make the trace look like a call to runtime·sigpanic instead.
// (Otherwise the trace will end at runtime·sigpanic and we
// won't get to see who faulted.)
if(ureg->pc != 0) {
sp = (uintptr*)ureg->sp;
*--sp = ureg->pc;
ureg->sp = (uint32)sp;
}
ureg->pc = (uintptr)runtime·sigpanic;
return NCONT;
}
if(!(nsig->flags & SigThrow))
return NDFLT;
Throw:
m->throwing = 1;
m->caughtsig = gp;
runtime·startpanic();
runtime·printf("%s\n", s);
runtime·printf("PC=%X\n", ureg->pc);
runtime·printf("\n");
if(runtime·gotraceback(&crash)) {
runtime·traceback(ureg->pc, ureg->sp, 0, gp);
runtime·tracebackothers(gp);
runtime·dumpregs(ureg);
}
if(crash)
runtime·crash();
runtime·goexitsall("");
runtime·exits(s);
return 0;
}
void
runtime·prints(int8 *s)
{
gwrite(s, runtime·findnull((byte*)s));
}
int32
runtime·sighandler(void *v, int8 *s, G *gp)
{
Ureg *ureg;
uintptr *sp;
SigTab *sig, *nsig;
int32 len, i;
if(!s)
return NCONT;
len = runtime·findnull((byte*)s);
if(len <= 4 || runtime·mcmp((byte*)s, (byte*)"sys:", 4) != 0)
return NDFLT;
nsig = nil;
sig = runtime·sigtab;
for(i=0; i < NSIG; i++) {
if(runtime·strstr((byte*)s, (byte*)sig->name)) {
nsig = sig;
break;
}
sig++;
}
if(nsig == nil)
return NDFLT;
ureg = v;
if(nsig->flags & SigPanic) {
if(gp == nil || m->notesig == 0)
goto Throw;
// Save error string from sigtramp's stack,
// into gsignal->sigcode0, so we can reliably
// access it from the panic routines.
if(len > ERRMAX)
len = ERRMAX;
runtime·memmove((void*)m->notesig, (void*)s, len);
gp->sig = i;
gp->sigpc = ureg->pc;
// Only push runtime·sigpanic if ureg->pc != 0.
// If ureg->pc == 0, probably panicked because of a
// call to a nil func. Not pushing that onto sp will
// make the trace look like a call to runtime·sigpanic instead.
// (Otherwise the trace will end at runtime·sigpanic and we
// won't get to see who faulted.)
if(ureg->pc != 0) {
sp = (uintptr*)ureg->sp;
*--sp = ureg->pc;
ureg->sp = (uint32)sp;
}
ureg->pc = (uintptr)runtime·sigpanic;
return NCONT;
}
if(!(nsig->flags & SigThrow))
return NDFLT;
Throw:
runtime·startpanic();
runtime·printf("%s\n", s);
runtime·printf("PC=%X\n", ureg->pc);
runtime·printf("\n");
if(runtime·gotraceback()) {
runtime·traceback((void*)ureg->pc, (void*)ureg->sp, 0, gp);
runtime·tracebackothers(gp);
runtime·dumpregs(ureg);
}
runtime·goexitsall("");
runtime·exits(s);
return 0;
}
void
prints(int8 *s)
{
write(fd, s, findnull((byte*)s));
}
