Update to v079r01 release.

This version adds a "link" SNES coprocessor module, which just loads
a shared library. It was posted outside the v079 WIP thread, in this
thread:

    http://board.byuu.org/viewtopic.php?f=16&t=1700

bsnes/snes/Makefile

@@ -5,7 +5,7 @@ snes_objects += snes-cpu snes-smp snes-dsp snes-ppu
 snes_objects += snes-nss snes-icd2 snes-superfx snes-sa1 snes-necdsp
 snes_objects += snes-bsx snes-srtc snes-sdd1 snes-spc7110 snes-cx4
 snes_objects += snes-obc1 snes-st0018 snes-sufamiturbo
-snes_objects += snes-msu1 snes-serial
+snes_objects += snes-msu1 snes-serial snes-link
 objects += $(snes_objects)
 
 ifeq ($(profile),accuracy)
@@ -54,3 +54,4 @@ obj/snes-st0018.o     : $(snes)/chip/st0018/st0018.cpp $(snes)/chip/st0018/*
 obj/snes-sufamiturbo.o: $(snes)/chip/sufamiturbo/sufamiturbo.cpp $(snes)/chip/sufamiturbo/*
 obj/snes-msu1.o       : $(snes)/chip/msu1/msu1.cpp $(snes)/chip/msu1/*
 obj/snes-serial.o     : $(snes)/chip/serial/serial.cpp $(snes)/chip/serial/*
+obj/snes-link.o       : $(snes)/chip/link/link.cpp $(snes)/chip/link/*

bsnes/snes/alt/smp/smp.hpp

@@ -33,6 +33,7 @@ public:
     alwaysinline unsigned operator=(unsigned data) {
       n = data & 0x80; v = data & 0x40; p = data & 0x20; b = data & 0x10;
       h = data & 0x08; i = data & 0x04; z = data & 0x02; c = data & 0x01;
+      return data;
     }
 
     alwaysinline unsigned operator|=(unsigned data) { return operator=(operator unsigned() | data); }

bsnes/snes/cartridge/cartridge.cpp

@@ -30,11 +30,12 @@ void Cartridge::load(Mode cartridge_mode, const lstring &xml_list) {
   has_st0018     = false;
   has_msu1       = false;
   has_serial     = false;
+  has_link       = false;
 
   nvram.reset();
 
   parse_xml(xml_list);
-//print(xml_list[0], "\n\n");
+  print(xml_list[0], "\n\n");
 
   if(ram_size > 0) {
     ram.map(allocate<uint8>(ram_size, 0xff), ram_size);

bsnes/snes/cartridge/cartridge.hpp

@@ -47,6 +47,7 @@ public:
   readonly<bool> has_st0018;
   readonly<bool> has_msu1;
   readonly<bool> has_serial;
+  readonly<bool> has_link;
 
   struct NonVolatileRAM {
     const string id;
@@ -115,6 +116,7 @@ private:
   void xml_parse_setarisc(xml_element&);
   void xml_parse_msu1(xml_element&);
   void xml_parse_serial(xml_element&);
+  void xml_parse_link(xml_element&);
 
   void xml_parse_address(Mapping&, const string&);
   void xml_parse_mode(Mapping&, const string&);

bsnes/snes/cartridge/xml.cpp

@@ -50,6 +50,7 @@ void Cartridge::parse_xml_cartridge(const char *data) {
         if(node.name == "setarisc") xml_parse_setarisc(node);
         if(node.name == "msu1") xml_parse_msu1(node);
         if(node.name == "serial") xml_parse_serial(node);
+        if(node.name == "link") xml_parse_link(node);
       }
     }
   }
@@ -639,6 +640,25 @@ void Cartridge::xml_parse_serial(xml_element &root) {
   has_serial = true;
 }
 
+void Cartridge::xml_parse_link(xml_element &root) {
+  has_link = true;
+  link.program = "";
+
+  foreach(attr, root.attribute) {
+    if(attr.name == "program") link.program = attr.content;
+  }
+
+  foreach(node, root.element) {
+    if(node.name == "map") {
+      Mapping m({ &Link::read, &link }, { &Link::write, &link });
+      foreach(attr, node.attribute) {
+        if(attr.name == "address") xml_parse_address(m, attr.content);
+      }
+      mapping.append(m);
+    }
+  }
+}
+
 void Cartridge::xml_parse_address(Mapping &m, const string &data) {
   lstring part;
   part.split(":", data);

bsnes/snes/chip/chip.hpp

@@ -18,6 +18,7 @@ struct Coprocessor : Processor {
 #include <snes/chip/sufamiturbo/sufamiturbo.hpp>
 #include <snes/chip/msu1/msu1.hpp>
 #include <snes/chip/serial/serial.hpp>
+#include <snes/chip/link/link.hpp>
 
 void Coprocessor::step(unsigned clocks) {
   clock += clocks * (uint64)cpu.frequency;

bsnes/snes/chip/link/link.cpp

@@ -0,0 +1,45 @@
+#include <snes/snes.hpp>
+
+#define LINK_HPP
+namespace SNES {
+
+Link link;
+
+void Link::init() {
+}
+
+void Link::load() {
+  if(opened()) close();
+  string basename = system.interface->path(Cartridge::Slot::Base, "");
+  string name = program != "" ? program : notdir(basename);
+  string path = dir(basename);
+  if(open(name, path)) {
+    link_power = sym("link_power");
+    link_reset = sym("link_reset");
+    link_read  = sym("link_read" );
+    link_write = sym("link_write");
+  }
+}
+
+void Link::unload() {
+  if(opened()) close();
+}
+
+void Link::power() {
+  if(link_power) link_power();
+}
+
+void Link::reset() {
+  if(link_reset) link_reset();
+}
+
+uint8 Link::read(unsigned addr) {
+  if(link_read) return link_read(addr);
+  return cpu.regs.mdr;
+}
+
+void Link::write(unsigned addr, uint8 data) {
+  if(link_write) return link_write(addr, data);
+}
+
+}

bsnes/snes/chip/link/link.hpp

@@ -0,0 +1,21 @@
+class Link : public Coprocessor, public library {
+public:
+  string program;
+
+  void init();
+  void load();
+  void unload();
+  void power();
+  void reset();
+
+  uint8 read(unsigned addr);
+  void write(unsigned addr, uint8 data);
+
+private:
+  function<void ()> link_power;
+  function<void ()> link_reset;
+  function<uint8 (unsigned)> link_read;
+  function<void (unsigned, uint8)> link_write;
+};
+
+extern Link link;

bsnes/snes/snes.hpp

@@ -1,7 +1,7 @@
 namespace SNES {
   namespace Info {
     static const char Name[] = "bsnes";
-    static const char Version[] = "079";
+    static const char Version[] = "079.01";
     static const unsigned SerializerVersion = 20;
   }
 }

bsnes/snes/system/system.cpp

@@ -85,6 +85,7 @@ void System::init(Interface *interface_) {
   st0018.init();
   msu1.init();
   serial.init();
+  link.init();
 
   video.init();
   audio.init();
@@ -124,6 +125,7 @@ void System::load() {
   if(cartridge.has_st0018()) st0018.load();
   if(cartridge.has_msu1()) msu1.load();
   if(cartridge.has_serial()) serial.load();
+  if(cartridge.has_link()) link.load();
 
   serialize_init();
   cheat.init();
@@ -148,6 +150,7 @@ void System::unload() {
   if(cartridge.has_st0018()) st0018.unload();
   if(cartridge.has_msu1()) msu1.unload();
   if(cartridge.has_serial()) serial.unload();
+  if(cartridge.has_link()) link.unload();
 }
 
 void System::power() {
@@ -184,6 +187,7 @@ void System::power() {
   if(cartridge.has_st0018()) st0018.power();
   if(cartridge.has_msu1()) msu1.power();
   if(cartridge.has_serial()) serial.power();
+  if(cartridge.has_link()) link.power();
 
   if(cartridge.mode() == Cartridge::Mode::SuperGameBoy) cpu.coprocessors.append(&icd2);
   if(cartridge.has_superfx()) cpu.coprocessors.append(&superfx);
@@ -220,6 +224,7 @@ void System::reset() {
   if(cartridge.has_st0018()) st0018.reset();
   if(cartridge.has_msu1()) msu1.reset();
   if(cartridge.has_serial()) serial.reset();
+  if(cartridge.has_link()) link.reset();
 
   if(cartridge.mode() == Cartridge::Mode::SuperGameBoy) cpu.coprocessors.append(&icd2);
   if(cartridge.has_superfx()) cpu.coprocessors.append(&superfx);