Windows simulation support
This commit is contained in:
William D. Jones
Sebastien Bourdeauducq
parent
99fb0d4619
commit
fe6eef7069
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@ -1,4 +1,5 @@
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import warnings
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import sys
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from migen.fhdl.std import *
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from migen.fhdl.structure import _Fragment
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@ -25,6 +26,9 @@ class TopLevel:
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self.ios = {cd.clk, cd.rst}
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def get(self, sockaddr):
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if sys.platform == "win32":
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sockaddr = sockaddr[0] # Get the IP address only
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template1 = """`timescale 1ns / 1ps
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module {top_name}();
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@ -83,7 +87,12 @@ class Simulator:
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if sim_runner is None:
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sim_runner = icarus.Runner()
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self.top_level = top_level
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self.ipc = Initiator(sockaddr)
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if sys.platform == "win32":
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sockaddr = ("127.0.0.1", 50007)
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self.ipc = Initiator(sockaddr)
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else:
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self.ipc = Initiator(sockaddr)
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self.sim_runner = sim_runner
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c_top = self.top_level.get(sockaddr)
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@ -217,3 +226,4 @@ class Simulator:
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def run_simulation(fragment, ncycles=None, vcd_name=None, **kwargs):
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with Simulator(fragment, TopLevel(vcd_name), icarus.Runner(**kwargs)) as s:
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s.run(ncycles)
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@ -3,12 +3,14 @@
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import socket
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import os
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import sys
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import struct
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#
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# Message classes
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#
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class Int32(int):
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pass
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@ -55,11 +57,11 @@ class MessageReadReply(Message):
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message_classes = [MessageTick, MessageGo, MessageWrite, MessageRead, MessageReadReply]
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#
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# Packing
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#
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def _pack_int(v):
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if v == 0:
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p = [1, 0]
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@ -78,6 +80,11 @@ def _pack_str(v):
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return p
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def _pack_int16(v):
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return [v & 0xff,
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(v & 0xff00) >> 8]
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def _pack_int32(v):
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return [
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v & 0xff,
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@ -100,13 +107,16 @@ def _pack(message):
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r += _pack_int32(value)
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else:
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raise TypeError
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if sys.platform == "win32":
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size = _pack_int16(len(r) + 2) # size specifier adds to size
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r = size + r
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return bytes(r)
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#
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# Unpacking
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#
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def _unpack_int(i, nchunks=None):
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v = 0
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power = 1
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@ -144,11 +154,11 @@ def _unpack(message):
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pvalues.append(v)
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return msgclass(*pvalues)
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#
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# I/O
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#
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class PacketTooLarge(Exception):
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pass
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@ -156,8 +166,11 @@ class PacketTooLarge(Exception):
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class Initiator:
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def __init__(self, sockaddr):
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self.sockaddr = sockaddr
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self.socket = socket.socket(socket.AF_UNIX, socket.SOCK_SEQPACKET)
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self._cleanup_file()
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if sys.platform == "win32":
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self.socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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else:
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self.socket = socket.socket(socket.AF_UNIX, socket.SOCK_SEQPACKET)
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self._cleanup_file()
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self.socket.bind(self.sockaddr)
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self.socket.listen(1)
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@ -175,11 +188,31 @@ class Initiator:
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def recv(self):
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maxlen = 2048
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packet = self.conn.recv(maxlen)
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if len(packet) < 1:
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return None
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if len(packet) >= maxlen:
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raise PacketTooLarge
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if sys.platform == "win32":
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packet = self.conn.recv(maxlen)
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if len(packet) < 1:
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return None
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if len(packet) >= maxlen:
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raise PacketTooLarge
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expected_size = struct.unpack("<H", packet[:2])[0]
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# If full packet wasn't received, keep waiting!
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if len(packet) < expected_size:
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packet_frag = self.conn.recv(maxlen)
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packet += packet_frag
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if len(packet_frag) < 1:
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return None
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if len(packet) >= maxlen:
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raise PacketTooLarge
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# Discard the length from the packet - it's not needed anymore.
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packet = packet[2:]
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else:
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packet = self.conn.recv(maxlen)
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if len(packet) < 1:
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return None
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if len(packet) >= maxlen:
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raise PacketTooLarge
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return _unpack(packet)
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def close(self):
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@ -187,6 +220,17 @@ class Initiator:
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self.conn.shutdown(socket.SHUT_RDWR)
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self.conn.close()
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if hasattr(self, "socket"):
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self.socket.shutdown(socket.SHUT_RDWR)
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self.socket.close()
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self._cleanup_file()
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if sys.platform == "win32":
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# self.socket.shutdown(socket.SHUT_RDWR)
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# Fails with WinError 10057:
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# A request to send or receive data was disallowed because the
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# socket is not connected and (when sending on a datagram
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# socket using a sendto call) no address was supplied
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# This error will cascade into WinError 10038, where
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# Simulator.__exit__ didn't finish cleaning up and left an
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# invalid socket.
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self.socket.close()
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else:
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self.socket.shutdown(socket.SHUT_RDWR)
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self.socket.close()
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self._cleanup_file()
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@ -2,6 +2,10 @@ INSTDIR = $(shell iverilog-vpi --install-dir)
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CFLAGS = -Wall -O2 $(CFLAGS_$@)
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VPI_CFLAGS := $(shell iverilog-vpi --cflags)
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# Define the below flags for a Windows build.
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# Make sure to run iverilog-vpi with -mingw and -ivl options if necessary!
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# i.e. iverilog-vpi -mingw=C:\msys64\mingw32 -ivl=C:\msys64\mingw32
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# MINGW_FLAGS=-lWs2_32
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OBJ=ipc.o main.o
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@ -11,7 +15,7 @@ all: migensim.vpi
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$(CC) $(CFLAGS) $(VPI_CFLAGS) -c $(INCDIRS) -o $@ $<
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migensim.vpi: $(OBJ)
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iverilog-vpi --name=migensim $^
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iverilog-vpi $(MINGW_FLAGS) --name=migensim $^
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install: migensim.vpi
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install -m755 -t $(INSTDIR) $^
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127
vpi/ipc.c
127
vpi/ipc.c
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@ -5,13 +5,21 @@
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#include <assert.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <sys/un.h>
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#include <unistd.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#ifdef _WIN32
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#include <winsock2.h>
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#include <ws2tcpip.h>
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#define WIN_SOCKET_PORT "50007"
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#else
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#include <sys/socket.h>
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#include <sys/un.h>
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#endif
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#include "ipc.h"
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struct ipc_softc {
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@ -26,7 +34,12 @@ struct ipc_softc *ipc_connect(const char *sockaddr,
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go_handler h_go, write_handler h_write, read_handler h_read, void *user)
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{
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struct ipc_softc *sc;
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#ifdef _WIN32
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struct addrinfo hints, *my_addrinfo;
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WSADATA wsaData;
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#else
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struct sockaddr_un addr;
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#endif
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sc = malloc(sizeof(struct ipc_softc));
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if(!sc) return NULL;
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@ -36,6 +49,35 @@ struct ipc_softc *ipc_connect(const char *sockaddr,
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sc->h_read = h_read;
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sc->user = user;
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#ifdef _WIN32
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/* Initialize Winsock. */
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if (WSAStartup(MAKEWORD(2, 2), &wsaData) != 0) {
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free(sc);
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return NULL;
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}
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memset(&hints, 0, sizeof(hints));
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hints.ai_family = AF_INET;
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hints.ai_socktype = SOCK_STREAM;
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hints.ai_protocol = IPPROTO_TCP;
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if(getaddrinfo(sockaddr, WIN_SOCKET_PORT, NULL, &my_addrinfo) != 0) {
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free(sc);
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return NULL;
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}
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sc->socket = socket(AF_INET, SOCK_STREAM, 0);
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if(sc->socket < 0) {
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free(sc);
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return NULL;
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}
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if(connect(sc->socket, my_addrinfo->ai_addr, my_addrinfo->ai_addrlen) != 0) {
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close(sc->socket);
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free(sc);
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return NULL;
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}
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#else
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sc->socket = socket(AF_UNIX, SOCK_SEQPACKET, 0);
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if(sc->socket < 0) {
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free(sc);
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@ -49,6 +91,7 @@ struct ipc_softc *ipc_connect(const char *sockaddr,
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free(sc);
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return NULL;
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}
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#endif
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return sc;
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}
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@ -57,6 +100,9 @@ void ipc_destroy(struct ipc_softc *sc)
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{
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close(sc->socket);
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free(sc);
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#ifdef _WIN32
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WSACleanup();
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#endif
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}
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enum {
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@ -77,19 +123,62 @@ enum {
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int ipc_receive(struct ipc_softc *sc)
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{
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unsigned char buffer[MAX_LEN];
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ssize_t l;
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ssize_t l = 0;
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int i;
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#ifdef _WIN32
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int expected_num;
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int received_num = 0;
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#endif
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#ifdef _WIN32
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/* Initial recv. Includes a length identifier so that we wait
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* until a full message is received. The length of the message
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* includes the length identifier. */
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while(received_num < 2) {
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/* Ensure we wait to get the packet length,
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* which requires two bytes, before continuing. */
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received_num = recv(sc->socket, (char *)&buffer[l], \
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(MAX_LEN - received_num), 0);
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l += received_num;
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if(received_num == 0)
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return 2;
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if((received_num < 0) || (received_num >= MAX_LEN) || \
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(l >= MAX_LEN))
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return 0;
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}
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expected_num = ((buffer[1] << 8) | (buffer[0]));
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while(l < expected_num) {
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/* received_num will never exceed MAX_LEN, unless
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* recv is broken. */
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received_num = recv(sc->socket, (char *)&buffer[l], \
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(MAX_LEN - received_num), 0);
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l += received_num;
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if(received_num == 0)
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return 2;
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if((received_num < 0) || (received_num >= MAX_LEN) || \
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(l >= MAX_LEN))
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return 0;
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} /* l is assumed to have the message length
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* in the message unpacking code. */
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i = 2; /* Skip the length identifier. */
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#else
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/* On Unix, SOCK_SEQPACKET will take care of ensuring message
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* boundaries are satisfied. */
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l = recv(sc->socket, buffer, MAX_LEN, 0);
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if(l == 0)
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return 2;
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if((l < 0) || (l >= MAX_LEN))
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return 0;
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i = 0; /* No length identifier, so we care about the entire buffer */
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#endif
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i = 0;
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switch(buffer[i++]) {
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case MESSAGE_GO:
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assert(l == 1);
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assert((l - i) == 0);
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return sc->h_go(sc->user);
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case MESSAGE_WRITE: {
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char *name;
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@ -126,13 +215,26 @@ int ipc_receive(struct ipc_softc *sc)
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int ipc_tick(struct ipc_softc *sc)
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{
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char c;
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ssize_t l;
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#ifdef _WIN32
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char c[3];
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c[0] = 3;
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c[1] = 0;
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c[2] = MESSAGE_TICK;
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l = send(sc->socket, c, 3, 0);
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if(l != 3)
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return 0;
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#else
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char c;
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c = MESSAGE_TICK;
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l = send(sc->socket, &c, 1, 0);
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if(l != 1)
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return 0;
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#endif
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return 1;
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}
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@ -142,6 +244,17 @@ int ipc_read_reply(struct ipc_softc *sc, int nchunks, const unsigned char *chunk
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char buffer[MAX_LEN];
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ssize_t l;
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#ifdef _WIN32
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len = nchunks + 4;
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assert(len < MAX_LEN);
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assert(nchunks < 256);
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buffer[0] = len & 0xFF;
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buffer[1] = (0xFF00 & len) >> 8;
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buffer[2] = MESSAGE_READ_REPLY;
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buffer[3] = nchunks;
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memcpy(&buffer[4], chunks, nchunks);
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#else
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len = nchunks + 2;
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assert(len < MAX_LEN);
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assert(nchunks < 256);
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@ -149,9 +262,11 @@ int ipc_read_reply(struct ipc_softc *sc, int nchunks, const unsigned char *chunk
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buffer[0] = MESSAGE_READ_REPLY;
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buffer[1] = nchunks;
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memcpy(&buffer[2], chunks, nchunks);
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#endif
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l = send(sc->socket, buffer, len, 0);
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if(l != len)
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return 0;
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return 1;
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}
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