static irqreturn_t mipsnet_interrupt(int irq, void *dev_id)
{
struct net_device *dev = dev_id;
u32 int_flags;
irqreturn_t ret = IRQ_NONE;
if (irq != dev->irq)
goto out_badirq;
/* TESTBIT is cleared on read. */
int_flags = inl(regaddr(dev, interruptControl));
if (int_flags & MIPSNET_INTCTL_TESTBIT) {
/* TESTBIT takes effect after a write with 0. */
outl(0, regaddr(dev, interruptControl));
ret = IRQ_HANDLED;
} else if (int_flags & MIPSNET_INTCTL_TXDONE) {
/* Only one packet at a time, we are done. */
dev->stats.tx_packets++;
netif_wake_queue(dev);
outl(MIPSNET_INTCTL_TXDONE,
regaddr(dev, interruptControl));
ret = IRQ_HANDLED;
} else if (int_flags & MIPSNET_INTCTL_RXDONE) {
mipsnet_get_fromdev(dev, inl(regaddr(dev, rxDataCount)));
outl(MIPSNET_INTCTL_RXDONE, regaddr(dev, interruptControl));
ret = IRQ_HANDLED;
}
return ret;
out_badirq:
printk(KERN_INFO "%s: %s(): irq %d for unknown device\n",
dev->name, __func__, irq);
return ret;
}
/*
* Copy data from the MIPSNET rx data port
*/
static int ioiocpy_frommipsnet(struct net_device *dev, unsigned char *kdata,
int len)
{
for (; len > 0; len--, kdata++)
*kdata = inb(regaddr(dev, rxDataBuffer));
return inl(regaddr(dev, rxDataCount));
}
static inline void mipsnet_put_todevice(struct net_device *dev,
struct sk_buff *skb)
{
int count_to_go = skb->len;
char *buf_ptr = skb->data;
outl(skb->len, regaddr(dev, txDataCount));
for (; count_to_go; buf_ptr++, count_to_go--)
outb(*buf_ptr, regaddr(dev, txDataBuffer));
dev->stats.tx_packets++;
dev->stats.tx_bytes += skb->len;
dev_kfree_skb(skb);
}
static int __init mipsnet_probe(struct device *dev)
{
struct net_device *netdev;
int err;
netdev = alloc_etherdev(0);
if (!netdev) {
err = -ENOMEM;
goto out;
}
dev_set_drvdata(dev, netdev);
netdev->open = mipsnet_open;
netdev->stop = mipsnet_close;
netdev->hard_start_xmit = mipsnet_xmit;
netdev->set_multicast_list = mipsnet_set_mclist;
/*
* TODO: probe for these or load them from PARAM
*/
netdev->base_addr = 0x4200;
netdev->irq = MIPS_CPU_IRQ_BASE + MIPSCPU_INT_MB0 +
inl(regaddr(netdev, interruptInfo));
/* Get the io region now, get irq on open() */
if (!request_region(netdev->base_addr, sizeof(struct mipsnet_regs),
"mipsnet")) {
err = -EBUSY;
goto out_free_netdev;
}
/*
* Lacking any better mechanism to allocate a MAC address we use a
* random one ...
*/
random_ether_addr(netdev->dev_addr);
err = register_netdev(netdev);
if (err) {
printk(KERN_ERR "MIPSNet: failed to register netdev.\n");
goto out_free_region;
}
return 0;
out_free_region:
release_region(netdev->base_addr, sizeof(struct mipsnet_regs));
out_free_netdev:
free_netdev(netdev);
out:
return err;
}
static int mipsnet_open(struct net_device *dev)
{
int err;
err = request_irq(dev->irq, &mipsnet_interrupt,
IRQF_SHARED, dev->name, (void *) dev);
if (err) {
release_region(dev->base_addr, sizeof(struct mipsnet_regs));
return err;
}
netif_start_queue(dev);
/* test interrupt handler */
outl(MIPSNET_INTCTL_TESTBIT, regaddr(dev, interruptControl));
return 0;
}
static void
get_operand (char **ptr, struct z8k_op *mode, unsigned int dst ATTRIBUTE_UNUSED)
{
char *src = *ptr;
char *end;
mode->mode = 0;
while (*src == ' ')
src++;
if (*src == '#')
{
mode->mode = CLASS_IMM;
imm_operand = &(mode->exp);
src = parse_exp (src + 1, &(mode->exp));
}
else if (*src == '@')
{
mode->mode = CLASS_IR;
src = parse_reg (src + 1, &mode->regsize, &mode->reg);
}
else
{
unsigned int regn;
end = parse_reg (src, &mode->mode, ®n);
if (end)
{
int nw;
unsigned int nr;
src = end;
if (*src == '(')
{
src++;
end = parse_reg (src, &nw, &nr);
if (end)
{
/* Got Ra(Rb). */
src = end;
if (*src != ')')
as_bad (_("Missing ) in ra(rb)"));
else
src++;
regaddr (mode->mode, "ra(rb) ra");
mode->mode = CLASS_BX;
mode->reg = regn;
mode->x_reg = nr;
reg[ARG_RX] = nr;
}
else
{
/* Got Ra(disp). */
if (*src == '#')
src++;
src = parse_exp (src, &(mode->exp));
src = checkfor (src, ')');
mode->mode = CLASS_BA;
mode->reg = regn;
mode->x_reg = 0;
imm_operand = &(mode->exp);
}
}
else
{
mode->reg = regn;
mode->x_reg = 0;
}
}
else
{
/* No initial reg. */
src = parse_exp (src, &(mode->exp));
if (*src == '(')
{
src++;
end = parse_reg (src, &(mode->mode), ®n);
regword (mode->mode, "addr(Ra) ra");
mode->mode = CLASS_X;
mode->reg = regn;
mode->x_reg = 0;
da_operand = &(mode->exp);
src = checkfor (end, ')');
}
else
{
/* Just an address. */
mode->mode = CLASS_DA;
mode->reg = 0;
mode->x_reg = 0;
da_operand = &(mode->exp);
}
}
}
*ptr = src;
}
void
lcgen(Node *n, int result, Node *nn)
{
Node rn;
Prog *p1;
int lg;
if(n == Z || n->type == T)
return;
if(debug['g']) {
if(result == D_TREE)
prtree(nn, "result");
else
print("result = %R\n", result);
prtree(n, "lcgen");
}
if(nn == Z) {
nn = &rn;
nn->type = types[TIND];
}
switch(n->op) {
case OCOMMA:
cgen(n->left, D_NONE, n->left);
doinc(n->left, POST);
doinc(n->right, PRE);
lcgen(n->right, result, nn);
break;
case OCOND:
doinc(n->left, PRE);
boolgen(n->left, 1, D_NONE, Z, n->left);
p1 = p;
inargs++;
doinc(n->right->left, PRE);
lcgen(n->right->left, result, nn);
doinc(n->right->left, POST);
gbranch(OGOTO);
patch(p1, pc);
p1 = p;
doinc(n->right->right, PRE);
lcgen(n->right->right, result, nn);
doinc(n->right->right, POST);
patch(p1, pc);
inargs--;
break;
case OIND:
if(n->addable >= INDEXED) {
if(result >= D_A0 && result < D_A0+NREG) {
gopcode(OADDR, types[TLONG], D_TREE, n, result, nn);
break;
}
if(result == D_TOS) {
gopcode(OADDR, types[TSHORT], D_NONE, nn, D_TREE, n);
break;
}
}
cgen(n->left, result, nn);
break;
default:
if(n->addable < INDEXED) {
diag(n, "unknown op in lcgen: %O", n->op);
break;
}
if(result >= D_A0 && result < D_A0+NREG) {
gopcode(OADDR, types[TLONG], D_TREE, n, result, nn);
break;
}
if(result == D_TOS) {
gopcode(OADDR, types[TSHORT], D_NONE, nn, D_TREE, n);
break;
}
lg = regaddr(result);
gopcode(OADDR, types[TLONG], D_TREE, n, lg, nn);
gopcode(OAS, nn->type, lg, nn, result, nn);
regfree(lg);
break;
}
}
void
cgen(Node *n, int result, Node *nn)
{
Node *l, *r, nod;
int lg, rg, xg, yg, g, o;
long v;
Prog *p1;
if(n == Z || n->type == T)
return;
if(typesuv[n->type->etype]) {
sugen(n, result, nn, n->type->width);
return;
}
if(debug['g']) {
if(result == D_TREE)
prtree(nn, "result");
else
print("result = %R\n", result);
prtree(n, "cgen");
}
l = n->left;
r = n->right;
o = n->op;
if(n->addable >= INDEXED) {
if(result == D_NONE) {
if(nn == Z)
switch(o) {
default:
nullwarn(Z, Z);
break;
case OINDEX:
nullwarn(l, r);
break;
}
return;
}
gmove(n->type, nn->type, D_TREE, n, result, nn);
return;
}
v = 0; /* set */
switch(o) {
default:
diag(n, "unknown op in cgen: %O", o);
break;
case OAS:
if(l->op == OBIT)
goto bitas;
/*
* recursive use of result
*/
if(result == D_NONE)
if(l->addable > INDEXED)
if(l->complex < FNX) {
cgen(r, D_TREE, l);
break;
}
/*
* function calls on both sides
*/
if(l->complex >= FNX && r->complex >= FNX) {
cgen(r, D_TOS, r);
v = argoff;
lg = regaddr(result);
lcgen(l, lg, Z);
lg |= I_INDIR;
adjsp(v - argoff);
gmove(r->type, l->type, D_TOS, r, lg, l);
if(result != D_NONE)
gmove(l->type, nn->type, lg, l, result, nn);
regfree(lg);
break;
}
rg = D_TREE;
lg = D_TREE;
if(r->complex >= l->complex) {
/*
* right side before left
*/
if(result != D_NONE) {
rg = regalloc(n->type, result);
cgen(r, rg, n);
} else
if(r->complex >= FNX || r->addable < INDEXED) {
rg = regalloc(r->type, result);
cgen(r, rg, r);
}
if(l->addable < INDEXED) {
lg = regaddr(lg);
lcgen(l, lg, Z);
lg |= I_INDIR;
}
} else {
/*
* left before right
*/
if(l->complex >= FNX || l->addable < INDEXED) {
lg = regaddr(lg);
lcgen(l, lg, Z);
lg |= I_INDIR;
}
if(result != D_NONE) {
rg = regalloc(n->type, result);
cgen(r, rg, n);
} else
if(r->addable < INDEXED) {
rg = regalloc(r->type, result);
cgen(r, rg, r);
}
}
if(result != D_NONE) {
gmove(n->type, l->type, rg, r, lg, l);
gmove(n->type, nn->type, rg, r, result, nn);
} else
gmove(r->type, l->type, rg, r, lg, l);
regfree(lg);
regfree(rg);
break;
bitas:
n = l->left;
rg = regalloc(tfield, result);
if(l->complex >= r->complex) {
lg = regaddr(D_NONE);
lcgen(n, lg, Z);
lg |= I_INDIR;
cgen(r, rg, r);
} else {
cgen(r, rg, r);
lg = regaddr(D_NONE);
lcgen(n, lg, Z);
lg |= I_INDIR;
}
g = regalloc(n->type, D_NONE);
gmove(l->type, l->type, lg, l, g, l);
bitstore(l, rg, lg, g, result, nn);
break;
case OBIT:
if(result == D_NONE) {
nullwarn(l, Z);
break;
}
g = bitload(n, D_NONE, D_NONE, result, nn);
gopcode(OAS, nn->type, g, n, result, nn);
regfree(g);
break;
case ODOT:
sugen(l, D_TREE, nodrat, l->type->width);
if(result != D_NONE) {
warn(n, "non-interruptable temporary");
nod = *nodrat;
if(!r || r->op != OCONST) {
diag(n, "DOT and no offset");
break;
}
nod.xoffset += r->vconst;
nod.type = n->type;
cgen(&nod, result, nn);
}
break;
case OASLDIV:
case OASLMOD:
case OASDIV:
case OASMOD:
if(l->op == OBIT)
goto asbitop;
if(typefd[n->type->etype])
goto asbinop;
rg = D_TREE;
if(l->complex >= FNX || r->complex >= FNX) {
rg = D_TOS;
cgen(r, rg, r);
v = argoff;
} else
if(r->addable < INDEXED) {
rg = regalloc(n->type, D_NONE);
cgen(r, rg, r);
}
lg = D_TREE;
if(!simplv(l)) {
lg = regaddr(D_NONE);
lcgen(l, lg, Z); /* destroys register optimization */
lg |= I_INDIR;
}
g = regpair(result);
gmove(l->type, n->type, lg, l, g, n);
if(rg == D_TOS)
adjsp(v - argoff);
gopcode(o, n->type, rg, r, g, n);
if(o == OASLMOD || o == OASMOD)
gmove(n->type, l->type, g+1, n, lg, l);
else
gmove(n->type, l->type, g, n, lg, l);
if(result != D_NONE)
if(o == OASLMOD || o == OASMOD)
gmove(n->type, nn->type, g+1, n, result, nn);
else
gmove(n->type, nn->type, g, n, result, nn);
regfree(g);
regfree(g+1);
regfree(lg);
regfree(rg);
break;
case OASXOR:
case OASAND:
case OASOR:
if(l->op == OBIT)
goto asbitop;
if(l->complex >= FNX ||
l->addable < INDEXED ||
result != D_NONE ||
typefd[n->type->etype])
goto asbinop;
rg = D_TREE;
if(r->op != OCONST) {
rg = regalloc(n->type, D_NONE);
cgen(r, rg, r);
}
gopcode(o, l->type, rg, r, D_TREE, l);
regfree(rg);
break;
case OASADD:
case OASSUB:
if(l->op == OBIT ||
l->complex >= FNX ||
l->addable < INDEXED ||
result != D_NONE ||
typefd[n->type->etype])
goto asbinop;
v = vconst(r);
if(v > 0 && v <= 8) {
gopcode(o, n->type, D_TREE, r, D_TREE, l);
break;
}
rg = regalloc(n->type, D_NONE);
cgen(r, rg, r);
gopcode(o, n->type, rg, r, D_TREE, l);
regfree(rg);
break;
case OASLSHR:
case OASASHR:
case OASASHL:
if(l->op == OBIT ||
l->complex >= FNX ||
l->addable < INDEXED ||
result != D_NONE ||
typefd[n->type->etype])
goto asbinop;
rg = D_TREE;
v = vconst(r);
if(v <= 0 || v > 8) {
rg = regalloc(n->type, D_NONE);
cgen(r, rg, r);
}
lg = regalloc(n->type, D_NONE);
cgen(l, lg, l);
gopcode(o, n->type, rg, r, lg, l);
gmove(n->type, n->type, lg, l, D_TREE, l);
regfree(lg);
regfree(rg);
break;
case OASLMUL:
case OASMUL:
asbinop:
if(l->op == OBIT)
goto asbitop;
rg = D_TREE;
if(l->complex >= FNX || r->complex >= FNX) {
rg = D_TOS;
cgen(r, rg, r);
v = argoff;
} else
if(r->addable < INDEXED) {
rg = regalloc(n->type, D_NONE);
cgen(r, rg, r);
} else {
if(o == OASLSHR || o == OASASHR || o == OASASHL) {
v = vconst(r);
if(v <= 0 || v > 8) {
rg = regalloc(n->type, D_NONE);
cgen(r, rg, r);
}
}
}
lg = D_TREE;
if(!simplv(l)) {
lg = regaddr(D_NONE);
lcgen(l, lg, Z); /* destroys register optimization */
lg |= I_INDIR;
}
g = regalloc(n->type, result);
gmove(l->type, n->type, lg, l, g, n);
if(rg == D_TOS)
adjsp(v - argoff);
if(o == OASXOR)
if(rg == D_TREE) {
rg = regalloc(n->type, D_NONE);
cgen(r, rg, r);
}
if(o == OASXOR || o == OASLSHR || o == OASASHR || o == OASASHL)
if(rg == D_TOS) {
rg = regalloc(n->type, D_NONE);
gmove(n->type, n->type, D_TOS, n, rg, n);
}
gopcode(o, n->type, rg, r, g, n);
gmove(n->type, l->type, g, n, lg, l);
if(result != D_NONE)
gmove(n->type, nn->type, g, n, result, nn);
regfree(g);
regfree(lg);
regfree(rg);
break;
asbitop:
rg = regaddr(D_NONE);
lg = regalloc(tfield, D_NONE);
if(l->complex >= r->complex) {
g = bitload(l, lg, rg, result, nn);
xg = regalloc(r->type, D_NONE);
cgen(r, xg, nn);
} else {
xg = regalloc(r->type, D_NONE);
cgen(r, xg, nn);
g = bitload(l, lg, rg, result, nn);
}
if(!typefd[n->type->etype]) {
if(o == OASLDIV || o == OASDIV) {
yg = regpair(result);
gmove(tfield, n->type, g, l, yg, n);
gopcode(o, n->type, xg, r, yg, n);
gmove(n->type, tfield, yg, n, g, l);
regfree(yg);
regfree(yg+1);
regfree(xg);
bitstore(l, g, rg, lg, D_NONE, nn);
break;
}
if(o == OASLMOD || o == OASMOD) {
yg = regpair(result);
gmove(tfield, n->type, g, l, yg, n);
gopcode(o, n->type, xg, r, yg, n);
gmove(n->type, tfield, yg+1, n, g, l);
regfree(yg);
regfree(yg+1);
regfree(xg);
bitstore(l, g, rg, lg, D_NONE, nn);
break;
}
}
yg = regalloc(n->type, result);
gmove(tfield, n->type, g, l, yg, n);
gopcode(o, n->type, xg, r, yg, n);
gmove(n->type, tfield, yg, n, g, l);
regfree(yg);
regfree(xg);
bitstore(l, g, rg, lg, D_NONE, nn);
break;
case OCAST:
if(result == D_NONE) {
nullwarn(l, Z);
break;
}
lg = result;
if(l->complex >= FNX)
lg = regret(l->type);
lg = eval(l, lg);
if(nocast(l->type, n->type)) {
gmove(n->type, nn->type, lg, l, result, nn);
regfree(lg);
break;
}
if(nocast(n->type, nn->type)) {
gmove(l->type, n->type, lg, l, result, nn);
regfree(lg);
break;
}
rg = regalloc(n->type, result);
gmove(l->type, n->type, lg, l, rg, n);
gmove(n->type, nn->type, rg, n, result, nn);
regfree(rg);
regfree(lg);
break;
case OCOND:
doinc(l, PRE);
boolgen(l, 1, D_NONE, Z, l);
p1 = p;
inargs++;
doinc(r->left, PRE);
cgen(r->left, result, nn);
doinc(r->left, POST);
gbranch(OGOTO);
patch(p1, pc);
p1 = p;
doinc(r->right, PRE);
cgen(r->right, result, nn);
doinc(r->right, POST);
patch(p1, pc);
inargs--;
break;
case OIND:
if(result == D_NONE) {
nullwarn(l, Z);
break;
}
lg = nodalloc(types[TIND], result, &nod);
nod.lineno = n->lineno;
if(l->op == OADD) {
if(l->left->op == OCONST) {
nod.xoffset += l->left->vconst;
l = l->right;
} else
if(l->right->op == OCONST) {
nod.xoffset += l->right->vconst;
l = l->left;
}
}
cgen(l, lg, l);
gmove(n->type, nn->type, D_TREE, &nod, result, nn);
regfree(lg);
break;
case OFUNC:
v = argoff;
inargs++;
gargs(r);
lg = D_TREE;
if(l->addable < INDEXED) {
lg = regaddr(result);
lcgen(l, lg, Z);
lg |= I_INDIR;
}
inargs--;
doinc(r, POST);
doinc(l, POST);
gopcode(OFUNC, types[TCHAR], D_NONE, Z, lg, l);
regfree(lg);
if(inargs)
adjsp(v - argoff);
if(result != D_NONE) {
lg = regret(n->type);
gmove(n->type, nn->type, lg, n, result, nn);
}
break;
case OLDIV:
case OLMOD:
case ODIV:
case OMOD:
if(result == D_NONE) {
nullwarn(l, r);
break;
}
if(typefd[n->type->etype])
goto binop;
if(r->addable >= INDEXED && r->complex < FNX) {
lg = regpair(result);
cgen(l, lg, l);
rg = D_TREE;
} else {
cgen(r, D_TOS, r);
v = argoff;
lg = regpair(result);
cgen(l, lg, l);
adjsp(v - argoff);
rg = D_TOS;
}
gopcode(o, n->type, rg, r, lg, l);
if(o == OMOD || o == OLMOD)
gmove(l->type, nn->type, lg+1, l, result, nn);
else
gmove(l->type, nn->type, lg, l, result, nn);
regfree(lg);
regfree(lg+1);
break;
case OMUL:
case OLMUL:
if(l->op == OCONST)
if(mulcon(r, l, result, nn))
break;
if(r->op == OCONST)
if(mulcon(l, r, result, nn))
break;
if(debug['M'])
print("%L multiply\n", n->lineno);
goto binop;
case OAND:
if(r->op == OCONST)
if(typeil[n->type->etype])
if(l->op == OCAST) {
if(typec[l->left->type->etype])
if(!(r->vconst & ~0xff)) {
l = l->left;
goto binop;
}
if(typeh[l->left->type->etype])
if(!(r->vconst & ~0xffff)) {
l = l->left;
goto binop;
}
}
goto binop;
case OADD:
if(result == D_TOS)
if(r->addable >= INDEXED)
if(l->op == OCONST)
if(typeil[l->type->etype]) {
v = l->vconst;
if(v > -32768 && v < 32768) {
rg = regaddr(D_NONE);
gmove(r->type, r->type, D_TREE, r, rg, r);
gopcode(OADDR, types[TSHORT], D_NONE, Z, rg, r);
p->to.offset = v;
p->to.type |= I_INDIR;
regfree(rg);
break;
}
}
case OSUB:
if(result == D_TOS)
if(l->addable >= INDEXED)
if(r->op == OCONST)
if(typeil[r->type->etype]) {
v = r->vconst;
if(v > -32768 && v < 32768) {
if(n->op == OSUB)
v = -v;
lg = regaddr(D_NONE);
gmove(l->type, l->type, D_TREE, l, lg, l);
gopcode(OADDR, types[TSHORT], D_NONE, Z, lg, l);
p->to.offset = v;
p->to.type |= I_INDIR;
regfree(lg);
break;
}
}
goto binop;
case OOR:
case OXOR:
binop:
if(result == D_NONE) {
nullwarn(l, r);
break;
}
if(l->complex >= FNX && r->complex >= FNX) {
cgen(r, D_TOS, r);
v = argoff;
lg = regalloc(l->type, result);
cgen(l, lg, l);
adjsp(v - argoff);
if(o == OXOR) {
rg = regalloc(r->type, D_NONE);
gmove(r->type, r->type, D_TOS, r, rg, r);
gopcode(o, n->type, rg, r, lg, l);
regfree(rg);
} else
gopcode(o, n->type, D_TOS, r, lg, l);
gmove(n->type, nn->type, lg, l, result, nn);
regfree(lg);
break;
}
if(l->complex >= r->complex) {
if(l->op == OADDR && (o == OADD || o == OSUB))
lg = regaddr(result);
else
lg = regalloc(l->type, result);
cgen(l, lg, l);
rg = eval(r, D_NONE);
} else {
rg = regalloc(r->type, D_NONE);
cgen(r, rg, r);
lg = regalloc(l->type, result);
cgen(l, lg, l);
}
if(o == OXOR) {
if(rg == D_TREE) {
rg = regalloc(r->type, D_NONE);
cgen(r, rg, r);
}
if(rg == D_TOS) {
rg = regalloc(r->type, D_NONE);
gmove(r->type, r->type, D_TOS, r, rg, r);
}
}
gopcode(o, n->type, rg, r, lg, l);
gmove(n->type, nn->type, lg, l, result, nn);
regfree(lg);
regfree(rg);
break;
case OASHL:
if(r->op == OCONST)
if(shlcon(l, r, result, nn))
break;
case OLSHR:
case OASHR:
if(result == D_NONE) {
nullwarn(l, r);
break;
}
if(l->complex >= FNX && r->complex >= FNX) {
cgen(r, D_TOS, r);
v = argoff;
lg = regalloc(l->type, result);
cgen(l, lg, l);
adjsp(v - argoff);
rg = regalloc(r->type, D_NONE);
gopcode(OAS, r->type, D_TOS, r, rg, r);
gopcode(n->op, n->type, rg, r, lg, l);
gmove(n->type, nn->type, lg, l, result, nn);
regfree(lg);
regfree(rg);
break;
}
if(l->complex >= r->complex) {
lg = regalloc(l->type, result);
cgen(l, lg, l);
v = vconst(r);
if(v <= 0 || v > 8) {
rg = regalloc(r->type, D_NONE);
cgen(r, rg, r);
} else
rg = eval(r, D_NONE);
} else {
rg = regalloc(r->type, D_NONE);
cgen(r, rg, r);
lg = regalloc(l->type, result);
cgen(l, lg, l);
}
gopcode(o, n->type, rg, r, lg, l);
gmove(n->type, nn->type, lg, l, result, nn);
regfree(lg);
regfree(rg);
break;
case ONEG:
case OCOM:
if(result == D_NONE) {
nullwarn(l, Z);
break;
}
lg = regalloc(l->type, result);
cgen(l, lg, l);
gopcode(o, l->type, D_NONE, Z, lg, l);
gmove(n->type, nn->type, lg, l, result, nn);
regfree(lg);
break;
case OADDR:
if(result == D_NONE) {
nullwarn(l, Z);
break;
}
lcgen(l, result, nn);
break;
case OEQ:
case ONE:
case OLE:
case OLT:
case OGE:
case OGT:
case OLO:
case OLS:
case OHI:
case OHS:
if(result == D_NONE) {
nullwarn(l, r);
break;
}
boolgen(n, 1, result, nn, Z);
break;
case OANDAND:
case OOROR:
boolgen(n, 1, result, nn, Z);
if(result == D_NONE)
patch(p, pc);
break;
case OCOMMA:
cgen(l, D_NONE, l);
doinc(l, POST);
doinc(r, PRE);
cgen(r, result, nn);
break;
case ONOT:
if(result == D_NONE) {
nullwarn(l, Z);
break;
}
boolgen(n, 1, result, nn, Z);
break;
case OPOSTINC:
case OPOSTDEC:
v = 1;
if(l->type->etype == TIND)
v = l->type->link->width;
if(o == OPOSTDEC)
v = -v;
if(l->op == OBIT)
goto bitinc;
if(nn == Z)
goto pre;
lg = D_TREE;
if(l->addable < INDEXED) {
lg = regaddr(D_NONE);
lcgen(l, lg, Z);
lg |= I_INDIR;
}
if(result != D_NONE)
gmove(l->type, nn->type, lg, l, result, nn);
if(typefd[n->type->etype]) {
rg = regalloc(n->type, D_NONE);
gmove(l->type, l->type, lg, l, rg, l);
gopcode(o, n->type, D_CONST, nodconst(1), rg, l);
gmove(l->type, l->type, rg, l, lg, l);
regfree(rg);
} else {
if(v < 0)
gopcode(o, n->type, D_CONST, nodconst(-v), lg, l);
else
gopcode(o, n->type, D_CONST, nodconst(v), lg, l);
}
regfree(lg);
break;
case OPREINC:
case OPREDEC:
v = 1;
if(l->type->etype == TIND)
v = l->type->link->width;
if(o == OPREDEC)
v = -v;
if(l->op == OBIT)
goto bitinc;
pre:
lg = D_TREE;
if(l->addable < INDEXED) {
lg = regaddr(D_NONE);
lcgen(l, lg, Z);
lg |= I_INDIR;
}
if(typefd[n->type->etype]) {
rg = regalloc(n->type, D_NONE);
gmove(l->type, l->type, lg, l, rg, l);
gopcode(o, n->type, D_CONST, nodconst(1), rg, l);
gmove(l->type, l->type, rg, l, lg, l);
regfree(rg);
} else {
if(v < 0)
gopcode(o, n->type, D_CONST, nodconst(-v), lg, l);
else
gopcode(o, n->type, D_CONST, nodconst(v), lg, l);
}
if(result != D_NONE)
gmove(l->type, nn->type, lg, l, result, nn);
regfree(lg);
break;
bitinc:
rg = regaddr(D_NONE);
lg = regalloc(tfield, D_NONE);
if(result != D_NONE && (o == OPOSTINC || o == OPOSTDEC)) {
g = bitload(l, lg, rg, D_NONE, nn);
if(nn != Z)
gmove(l->type, nn->type, g, l, result, nn);
if(v < 0)
gopcode(o, n->type, D_CONST, nodconst(-v), g, n);
else
gopcode(o, n->type, D_CONST, nodconst(v), g, n);
bitstore(l, g, rg, lg, D_NONE, nn);
break;
}
g = bitload(l, lg, rg, result, nn);
if(v < 0)
gopcode(o, n->type, D_CONST, nodconst(-v), g, n);
else
gopcode(o, n->type, D_CONST, nodconst(v), g, n);
if(result != D_NONE)
gmove(l->type, nn->type, g, l, result, nn);
bitstore(l, g, rg, lg, D_NONE, nn);
break;
}
}
