232 lines
9.6 KiB
C++
232 lines
9.6 KiB
C++
/*
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* nextpnr -- Next Generation Place and Route
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*
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* Copyright (C) 2022 Lofty <lofty@yosyshq.com>
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include "log.h"
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#include "nextpnr.h"
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namespace {
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USING_NEXTPNR_NAMESPACE;
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template<typename T>
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uint64_t wrap(T thing) {
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static_assert(sizeof(T) <= 8, "T is too big for FFI");
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uint64_t b = 0;
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memcpy(&b, &thing, sizeof(T));
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return b;
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}
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BelId unwrap_bel(uint64_t bel) {
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static_assert(sizeof(BelId) <= 8, "T is too big for FFI");
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auto b = BelId();
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memcpy(&b, &bel, sizeof(BelId));
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return b;
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}
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PipId unwrap_pip(uint64_t pip) {
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static_assert(sizeof(PipId) <= 8, "T is too big for FFI");
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auto p = PipId();
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memcpy(&p, &pip, sizeof(PipId));
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return p;
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}
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WireId unwrap_wire(uint64_t wire) {
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static_assert(sizeof(WireId) <= 8, "T is too big for FFI");
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auto w = WireId();
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memcpy(&w, &wire, sizeof(WireId));
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return w;
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}
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}
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using DownhillIter = decltype(Context(ArchArgs()).getPipsDownhill(WireId()).begin());
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struct DownhillIterWrapper {
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DownhillIter current;
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DownhillIter end;
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DownhillIterWrapper(DownhillIter begin, DownhillIter end) : current(begin), end(end) {}
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};
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using UphillIter = decltype(Context(ArchArgs()).getPipsUphill(WireId()).begin());
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struct UphillIterWrapper {
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UphillIter current;
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UphillIter end;
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UphillIterWrapper(UphillIter begin, UphillIter end) : current(begin), end(end) {}
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};
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extern "C" {
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USING_NEXTPNR_NAMESPACE;
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void npnr_log_info(const char *string) { log_info("%s", string); }
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void npnr_log_error(const char *string) { log_error("%s", string); }
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uint64_t npnr_belid_null() { return wrap(BelId()); }
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uint64_t npnr_wireid_null() { return wrap(WireId()); }
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uint64_t npnr_pipid_null() { return wrap(PipId()); }
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int npnr_context_get_grid_dim_x(const Context *ctx) { return ctx->getGridDimX(); }
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int npnr_context_get_grid_dim_y(const Context *ctx) { return ctx->getGridDimY(); }
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void npnr_context_bind_bel(Context *ctx, uint64_t bel, CellInfo* cell, PlaceStrength strength) { return ctx->bindBel(unwrap_bel(bel), cell, strength); }
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void npnr_context_unbind_bel(Context *ctx, uint64_t bel) { return ctx->unbindBel(unwrap_bel(bel)); }
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bool npnr_context_check_bel_avail(Context *ctx, uint64_t bel) { return ctx->checkBelAvail(unwrap_bel(bel)); }
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void npnr_context_bind_wire(Context *ctx, uint64_t wire, NetInfo* net, PlaceStrength strength) { ctx->bindWire(unwrap_wire(wire), net, strength); }
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void npnr_context_unbind_wire(Context *ctx, uint64_t wire) { ctx->unbindWire(unwrap_wire(wire)); }
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void npnr_context_bind_pip(Context *ctx, uint64_t pip, NetInfo* net, PlaceStrength strength) { ctx->bindPip(unwrap_pip(pip), net, strength); }
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void npnr_context_unbind_pip(Context *ctx, uint64_t pip) { ctx->unbindPip(unwrap_pip(pip)); }
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uint64_t npnr_context_get_pip_src_wire(const Context *ctx, uint64_t pip) { return wrap(ctx->getPipSrcWire(unwrap_pip(pip))); }
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uint64_t npnr_context_get_pip_dst_wire(const Context *ctx, uint64_t pip) { return wrap(ctx->getPipDstWire(unwrap_pip(pip))); }
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float npnr_context_estimate_delay(const Context *ctx, uint64_t src, uint64_t dst) { return ctx->getDelayNS(ctx->estimateDelay(unwrap_wire(src), unwrap_wire(dst))); }
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float npnr_context_get_pip_delay(const Context *ctx, uint64_t pip) { return ctx->getDelayNS(ctx->getPipDelay(unwrap_pip(pip)).maxDelay()); }
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float npnr_context_get_wire_delay(const Context *ctx, uint64_t wire) { return ctx->getDelayNS(ctx->getWireDelay(unwrap_wire(wire)).maxDelay()); }
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float npnr_context_delay_epsilon(const Context *ctx) { return ctx->getDelayNS(ctx->getDelayEpsilon()); }
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Loc npnr_context_get_pip_location(const Context *ctx, uint64_t pip) { return ctx->getPipLocation(unwrap_pip(pip)); }
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bool npnr_context_check_pip_avail_for_net(const Context *ctx, uint64_t pip, NetInfo *net) { return ctx->checkPipAvailForNet(unwrap_pip(pip), net); }
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uint64_t npnr_context_get_pips_leak(const Context *ctx, uint64_t **pips) {
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auto size = size_t{};
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for (auto _pip : ctx->getPips())
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size++;
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auto *pip_vec = new std::vector<uint64_t>{};
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pip_vec->reserve(size);
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for (auto pip : ctx->getPips())
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pip_vec->push_back(wrap(pip));
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*pips = pip_vec->data();
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// Yes, by never deleting pip_vec, we leak memory.
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return size;
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}
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uint64_t npnr_context_get_wires_leak(const Context *ctx, uint64_t **wires) {
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auto size = size_t{};
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for (auto _wire : ctx->getWires())
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size++;
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auto *wire_vec = new std::vector<uint64_t>{};
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wire_vec->reserve(size);
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for (auto wire : ctx->getWires())
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wire_vec->push_back(wrap(wire));
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*wires = wire_vec->data();
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// Yes, by never deleting wire_vec, we leak memory.
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return size;
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}
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void npnr_context_check(const Context *ctx) { ctx->check(); }
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bool npnr_context_debug(const Context *ctx) { return ctx->debug; }
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int npnr_context_id(const Context *ctx, const char *str) { return ctx->id(str).hash(); }
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const char *npnr_context_name_of(const Context *ctx, IdString str) { return ctx->nameOf(str); }
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const char *npnr_context_name_of_pip(const Context *ctx, uint64_t pip) { return ctx->nameOfPip(unwrap_pip(pip)); }
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const char *npnr_context_name_of_wire(const Context *ctx, uint64_t wire) { return ctx->nameOfWire(unwrap_wire(wire)); }
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bool npnr_context_verbose(const Context *ctx) { return ctx->verbose; }
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uint64_t npnr_context_get_netinfo_source_wire(const Context *ctx, const NetInfo *net) { return wrap(ctx->getNetinfoSourceWire(net)); }
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uint64_t npnr_context_get_netinfo_sink_wire(const Context *ctx, const NetInfo *net, const PortRef *sink, uint32_t n) { return wrap(ctx->getNetinfoSinkWire(net, *sink, n)); }
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uint32_t npnr_context_nets_leak(const Context *ctx, int **names, NetInfo ***nets) {
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auto size = ctx->nets.size();
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auto *name_vec = new std::vector<int>{};
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auto *nets_vec = new std::vector<NetInfo*>{};
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name_vec->reserve(size);
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nets_vec->reserve(size);
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for (auto& item : ctx->nets) {
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name_vec->push_back(item.first.hash());
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nets_vec->push_back(item.second.get());
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}
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*names = name_vec->data();
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*nets = nets_vec->data();
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// Yes, by never deleting `name_vec` and `nets_vec` we leak memory.
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return size;
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}
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DownhillIterWrapper *npnr_context_get_pips_downhill(Context *ctx, uint64_t wire_id) {
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auto wire = unwrap_wire(wire_id);
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auto range = ctx->getPipsDownhill(wire);
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return new DownhillIterWrapper(range.begin(), range.end());
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}
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void npnr_delete_downhill_iter(DownhillIterWrapper *iter) {
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delete iter;
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}
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UphillIterWrapper *npnr_context_get_pips_uphill(Context *ctx, uint64_t wire_id) {
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auto wire = unwrap_wire(wire_id);
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auto range = ctx->getPipsUphill(wire);
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return new UphillIterWrapper(range.begin(), range.end());
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}
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void npnr_delete_uphill_iter(UphillIterWrapper *iter) {
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delete iter;
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}
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PortRef* npnr_netinfo_driver(NetInfo *net) {
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if (net == nullptr) {
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return nullptr;
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}
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return &net->driver;
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}
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uint32_t npnr_netinfo_users_leak(NetInfo *net, PortRef ***users) {
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auto x = std::vector<PortRef*>{};
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for (auto& item : net->users) {
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x.push_back(&item);
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}
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x.shrink_to_fit();
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*users = x.data();
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auto size = x.size();
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// Yes, by memcpying over `x` we leak memory.
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auto dummy = std::vector<PortRef*>{};
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std::memcpy(&x, &dummy, sizeof(dummy));
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return size;
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}
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#ifdef ARCH_ECP5
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bool npnr_netinfo_is_global(NetInfo *net) { return net->is_global; }
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#else
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bool npnr_netinfo_is_global(NetInfo *net) { return false; }
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#endif
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int32_t npnr_netinfo_udata(NetInfo *net) { return net->udata; }
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void npnr_netinfo_udata_set(NetInfo *net, int32_t value) { net->udata = value; }
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CellInfo* npnr_portref_cell(const PortRef *port) { return port->cell; }
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Loc npnr_cellinfo_get_location(const CellInfo *info) { return info->getLocation(); }
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void npnr_inc_downhill_iter(DownhillIterWrapper *iter) {
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++iter->current;
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}
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uint64_t npnr_deref_downhill_iter(DownhillIterWrapper *iter) {
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return wrap(*iter->current);
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}
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bool npnr_is_downhill_iter_done(DownhillIterWrapper *iter) {
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return !(iter->current != iter->end);
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}
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void npnr_inc_uphill_iter(UphillIterWrapper *iter) {
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++iter->current;
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}
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uint64_t npnr_deref_uphill_iter(UphillIterWrapper *iter) {
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return wrap(*iter->current);
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}
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bool npnr_is_uphill_iter_done(UphillIterWrapper *iter) {
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return !(iter->current != iter->end);
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}
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void rust_example_printnets(Context *ctx);
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}
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NEXTPNR_NAMESPACE_BEGIN
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void example_printnets(Context *ctx) {
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rust_example_printnets(ctx);
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}
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NEXTPNR_NAMESPACE_END
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