/* Emit an instruction to the assembly program. */
void emit(context* ctx, assembly* casm,
int op, operand* op1, operand* op2, operand* opdest)
{
int nextslot = casm->nextslot;
operand o = {0}; /* a dummy operand for padding */
#ifdef ZEN_ENABLE_OPTIMIZATION
/* a simple optimizing trick */
if (op==opLD && nextslot &&
casm->instructions[nextslot-1].op==opST &&
casm->instructions[nextslot-1].op1.ival==op1->ival &&
casm->instructions[nextslot-1].op2.ival==op2->ival &&
casm->instructions[nextslot-1].opdest.ival==opdest->ival &&
!(ctx->inleader&&ctx->insord==0)) /* can't be a leader's first ins */
return;
#endif
if (nextslot >= casm->size) /* buffer is full, reallocate */
{
casm->size = casm->size*2+1;
if ((casm->instructions =
realloc(casm->instructions, casm->size*sizeof(instruction))) == NULL)
setlasterror(ctx, ZEN_OUT_OF_MEMORY, "Not enough memory.\n");
}
casm->instructions[nextslot].op = op;
casm->instructions[nextslot].op1 = (op1!=NULL?*op1:o);
casm->instructions[nextslot].op2 = (op2!=NULL?*op2:o);
casm->instructions[nextslot].opdest = (opdest!=NULL?*opdest:o);
casm->nextslot++;
ctx->insord++;
}
uintptr
runtime·syscall(void *fn, uintptr nargs, void *args, uintptr *err)
{
G *oldlock;
uintptr ret;
/*
* Lock g to m to ensure we stay on the same stack if we do a callback.
*/
oldlock = m->lockedg;
m->lockedg = g;
g->lockedm = m;
runtime·entersyscall();
runtime·setlasterror(0);
ret = (uintptr)runtime·stdcall_raw(fn, nargs, args);
if(err)
*err = runtime·getlasterror();
runtime·exitsyscall();
m->lockedg = oldlock;
if(oldlock == nil)
g->lockedm = nil;
return ret;
}
// ===========================================================================
// METHOD: authdclient::executecmd
// ===========================================================================
int authdclient::executecmd (const string &command)
{
string result;
bool success = false;
s.puts (command);
// Wait for result
try
{
result = s.gets ();
}
catch (exception e)
{
syslog (LOG_ERR, "Error talking to authd: %s", e.description);
result = e.description;
setlasterror (result);
return ERR_AUTHD_FAILURE;
}
// Get Results from string
success = (result && result[0] == '+');
if (! success)
{
string rawcmd;
rawcmd = command;
rawcmd.cropat (' ');
syslog (LOG_ERR, "Error on command <%s>: %s", rawcmd.str(),
result.str());
setlasterror (result);
return ERR_AUTHD_FAILURE;
}
return ERR_OK;
}
