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/*
* nextpnr -- Next Generation Place and Route
*
* Copyright (C) 2018 Clifford Wolf <clifford@symbioticeda.com>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
*/
#include "nextpnr.h"
NEXTPNR_NAMESPACE_BEGIN
BaseCtx *IdString::global_ctx = nullptr;
void IdString::set(const BaseCtx *ctx, const std::string &s)
{
auto it = ctx->idstring_str_to_idx->find(s);
if (it == ctx->idstring_str_to_idx->end()) {
index = ctx->idstring_idx_to_str->size();
auto insert_rc = ctx->idstring_str_to_idx->insert({s, index});
ctx->idstring_idx_to_str->push_back(&insert_rc.first->first);
} else {
index = it->second;
}
}
const std::string &IdString::str(const BaseCtx *ctx) const { return *ctx->idstring_idx_to_str->at(index); }
const char *IdString::c_str(const BaseCtx *ctx) const { return str(ctx).c_str(); }
void IdString::initialize_add(const BaseCtx *ctx, const char *s, int idx)
{
assert(ctx->idstring_str_to_idx->count(s) == 0);
assert(int(ctx->idstring_idx_to_str->size()) == idx);
auto insert_rc = ctx->idstring_str_to_idx->insert({s, idx});
ctx->idstring_idx_to_str->push_back(&insert_rc.first->first);
}
static uint32_t xorshift32(uint32_t x)
{
x ^= x << 13;
x ^= x >> 17;
x ^= x << 5;
return x;
}
uint32_t Context::checksum() const
{
uint32_t cksum = xorshift32(123456789);
uint32_t cksum_nets_sum = 0;
for (auto &it : nets) {
auto &ni = *it.second;
uint32_t x = 123456789;
x = xorshift32(x + xorshift32(it.first.index));
x = xorshift32(x + xorshift32(ni.name.index));
if (ni.driver.cell)
x = xorshift32(x + xorshift32(ni.driver.cell->name.index));
x = xorshift32(x + xorshift32(ni.driver.port.index));
x = xorshift32(x + xorshift32(getDelayChecksum(ni.driver.budget)));
for (auto &u : ni.users) {
if (u.cell)
x = xorshift32(x + xorshift32(u.cell->name.index));
x = xorshift32(x + xorshift32(u.port.index));
x = xorshift32(x + xorshift32(getDelayChecksum(u.budget)));
}
uint32_t attr_x_sum = 0;
for (auto &a : ni.attrs) {
uint32_t attr_x = 123456789;
attr_x = xorshift32(attr_x + xorshift32(a.first.index));
for (uint8_t ch : a.second)
attr_x = xorshift32(attr_x + xorshift32(ch));
attr_x_sum += attr_x;
}
x = xorshift32(x + xorshift32(attr_x_sum));
uint32_t wire_x_sum = 0;
for (auto &w : ni.wires) {
uint32_t wire_x = 123456789;
wire_x = xorshift32(wire_x + xorshift32(getWireChecksum(w.first)));
wire_x = xorshift32(wire_x + xorshift32(getPipChecksum(w.second.pip)));
wire_x = xorshift32(wire_x + xorshift32(int(w.second.strength)));
wire_x_sum += wire_x;
}
x = xorshift32(x + xorshift32(wire_x_sum));
cksum_nets_sum += x;
}
cksum = xorshift32(cksum + xorshift32(cksum_nets_sum));
uint32_t cksum_cells_sum = 0;
for (auto &it : cells) {
auto &ci = *it.second;
uint32_t x = 123456789;
x = xorshift32(x + xorshift32(it.first.index));
x = xorshift32(x + xorshift32(ci.name.index));
x = xorshift32(x + xorshift32(ci.type.index));
uint32_t port_x_sum = 0;
for (auto &p : ci.ports) {
uint32_t port_x = 123456789;
port_x = xorshift32(port_x + xorshift32(p.first.index));
port_x = xorshift32(port_x + xorshift32(p.second.name.index));
if (p.second.net)
port_x = xorshift32(port_x + xorshift32(p.second.net->name.index));
port_x = xorshift32(port_x + xorshift32(p.second.type));
port_x_sum += port_x;
}
x = xorshift32(x + xorshift32(port_x_sum));
uint32_t attr_x_sum = 0;
for (auto &a : ci.attrs) {
uint32_t attr_x = 123456789;
attr_x = xorshift32(attr_x + xorshift32(a.first.index));
for (uint8_t ch : a.second)
attr_x = xorshift32(attr_x + xorshift32(ch));
attr_x_sum += attr_x;
}
x = xorshift32(x + xorshift32(attr_x_sum));
uint32_t param_x_sum = 0;
for (auto &p : ci.params) {
uint32_t param_x = 123456789;
param_x = xorshift32(param_x + xorshift32(p.first.index));
for (uint8_t ch : p.second)
param_x = xorshift32(param_x + xorshift32(ch));
param_x_sum += param_x;
}
x = xorshift32(x + xorshift32(param_x_sum));
x = xorshift32(x + xorshift32(getBelChecksum(ci.bel)));
x = xorshift32(x + xorshift32(ci.belStrength));
uint32_t pin_x_sum = 0;
for (auto &a : ci.pins) {
uint32_t pin_x = 123456789;
pin_x = xorshift32(pin_x + xorshift32(a.first.index));
pin_x = xorshift32(pin_x + xorshift32(a.second.index));
pin_x_sum += pin_x;
}
x = xorshift32(x + xorshift32(pin_x_sum));
cksum_cells_sum += x;
}
cksum = xorshift32(cksum + xorshift32(cksum_cells_sum));
return cksum;
}
void Context::check() const
{
for (auto &n : nets) {
auto ni = n.second;
assert(n.first == ni->name);
for (auto &w : ni->wires) {
assert(n.first == getBoundWireNet(w.first));
if (w.second.pip != PipId()) {
assert(w.first == getPipDstWire(w.second.pip));
assert(n.first == getBoundPipNet(w.second.pip));
}
}
}
for (auto w : getWires()) {
IdString net = getBoundWireNet(w);
if (net != IdString()) {
assert(nets.at(net)->wires.count(w));
}
}
for (auto &c : cells) {
assert(c.first == c.second->name);
if (c.second->bel != BelId())
assert(getBoundBelCell(c.second->bel) == c.first);
}
}
NEXTPNR_NAMESPACE_END
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