Commit 9f5264f2 authored by Kai Backman's avatar Kai Backman

small embedded target for arm.

R=rsc
CC=golang-dev
https://golang.org/cl/193104
parent cb58ed75
small embedded target for arm
define the c function write to make debug output work
// Copyright 2010 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 "runtime.h"
#include "malloc.h"
// Assume there's an arbitrary amount of memory starting at "end".
void*
SysAlloc(uintptr ask)
{
static byte *p;
extern byte end[];
byte *q;
if(p == nil) {
p = end;
p += 7 & -(uintptr)p;
}
ask += 7 & -ask;
q = p;
p += ask;
·memclr(q, ask);
return q;
}
void
SysFree(void *v, uintptr n)
{
USED(v, n);
}
void
SysUnused(void *v, uintptr n)
{
USED(v, n);
}
// nothing to see here
// Copyright 2010 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 "runtime.h"
int8 *goos = "embedded";
void
minit(void)
{
}
void
osinit(void)
{
}
void
initsig(void)
{
}
void
exit(int32)
{
for(;;);
}
// single processor, no interrupts,
// so no need for real concurrency or atomicity
void
newosproc(M *m, G *g, void *stk, void (*fn)(void))
{
USED(m, g, stk, fn);
throw("newosproc");
}
void
lock(Lock *l)
{
if(m->locks < 0)
throw("lock count");
m->locks++;
if(l->key != 0)
throw("deadlock");
l->key = 1;
}
void
unlock(Lock *l)
{
m->locks--;
if(m->locks < 0)
throw("lock count");
if(l->key != 1)
throw("unlock of unlocked lock");
l->key = 0;
}
void
noteclear(Note *n)
{
n->lock.key = 0;
}
void
notewakeup(Note *n)
{
n->lock.key = 1;
}
void
notesleep(Note *n)
{
if(n->lock.key != 1)
throw("notesleep");
}
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