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libgo: Update to October 24 version of master library.

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From-SVN: r204466
This commit is contained in:
Ian Lance Taylor 2013-11-06 19:49:01 +00:00
parent f20f261304
commit f038dae646
596 changed files with 32029 additions and 7466 deletions
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83
libgo/runtime/runtime.c
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@ -124,11 +124,12 @@ TestAtomic64(void)
z64 = 42;
x64 = 0;
PREFETCH(&z64);
if(runtime_cas64(&z64, &x64, 1))
if(runtime_cas64(&z64, x64, 1))
runtime_throw("cas64 failed");
if(x64 != 42)
if(x64 != 0)
runtime_throw("cas64 failed");
if(!runtime_cas64(&z64, &x64, 1))
x64 = 42;
if(!runtime_cas64(&z64, x64, 1))
runtime_throw("cas64 failed");
if(x64 != 42 || z64 != 1)
runtime_throw("cas64 failed");
@ -279,3 +280,79 @@ runtime_signalstack(byte *p, int32 n)
if(sigaltstack(&st, nil) < 0)
*(int *)0xf1 = 0xf1;
}
DebugVars runtime_debug;
static struct {
const char* name;
int32* value;
} dbgvar[] = {
{"gctrace", &runtime_debug.gctrace},
{"schedtrace", &runtime_debug.schedtrace},
{"scheddetail", &runtime_debug.scheddetail},
};
void
runtime_parsedebugvars(void)
{
const byte *p;
intgo i, n;
p = runtime_getenv("GODEBUG");
if(p == nil)
return;
for(;;) {
for(i=0; i<(intgo)nelem(dbgvar); i++) {
n = runtime_findnull((const byte*)dbgvar[i].name);
if(runtime_mcmp(p, dbgvar[i].name, n) == 0 && p[n] == '=')
*dbgvar[i].value = runtime_atoi(p+n+1);
}
p = (const byte *)runtime_strstr((const char *)p, ",");
if(p == nil)
break;
p++;
}
}
// Poor mans 64-bit division.
// This is a very special function, do not use it if you are not sure what you are doing.
// int64 division is lowered into _divv() call on 386, which does not fit into nosplit functions.
// Handles overflow in a time-specific manner.
int32
runtime_timediv(int64 v, int32 div, int32 *rem)
{
int32 res, bit;
if(v >= (int64)div*0x7fffffffLL) {
if(rem != nil)
*rem = 0;
return 0x7fffffff;
}
res = 0;
for(bit = 30; bit >= 0; bit--) {
if(v >= ((int64)div<<bit)) {
v = v - ((int64)div<<bit);
res += 1<<bit;
}
}
if(rem != nil)
*rem = v;
return res;
}
// Setting the max stack size doesn't really do anything for gccgo.
uintptr runtime_maxstacksize = 1<<20; // enough until runtime.main sets it for real
intgo runtime_debug_setMaxStack(intgo)
__asm__ (GOSYM_PREFIX "runtime_debug.setMaxStack");
intgo
runtime_debug_setMaxStack(intgo in)
{
intgo out;
out = runtime_maxstacksize;
runtime_maxstacksize = in;
return out;
}