1 files changed, 0 insertions, 154 deletions
diff --git a/riscv/applink.cc b/riscv/applink.cc
deleted file mode 100644
index e3e979d..0000000
--- a/riscv/applink.cc
+++ /dev/null
@@ -1,154 +0,0 @@
-#include "applink.h"
-#include "common.h"
-#include "sim.h"
-#include <unistd.h>
-#include <stdexcept>
-
-enum
-{
-  APP_CMD_READ_MEM,
-  APP_CMD_WRITE_MEM,
-  APP_CMD_READ_CONTROL_REG,
-  APP_CMD_WRITE_CONTROL_REG,
-  APP_CMD_START,
-  APP_CMD_STOP,
-  APP_CMD_ACK,
-  APP_CMD_NACK
-};
-
-#define APP_DATA_ALIGN 8
-#define APP_MAX_DATA_SIZE 1024
-struct packet
-{
-  uint16_t cmd;
-  uint16_t seqno;
-  uint32_t data_size;
-  uint64_t addr;
-  uint8_t  data[APP_MAX_DATA_SIZE];
-};
-
-class packet_error : public std::runtime_error
-{
-public:
-  packet_error(const std::string& s) : std::runtime_error(s) {}
-};
-class io_error : public packet_error
-{
-public:
-  io_error(const std::string& s) : packet_error(s) {}
-};
-
-appserver_link_t::appserver_link_t(int _tohost_fd, int _fromhost_fd)
-  : sim(NULL), tohost_fd(_tohost_fd), fromhost_fd(_fromhost_fd), seqno(1)
-{
-}
-
-void appserver_link_t::init(sim_t* _sim)
-{
-  sim = _sim;
-}
-
-void appserver_link_t::wait_for_start()
-{
-  while(wait_for_packet() != APP_CMD_START);
-}
-
-void appserver_link_t::wait_for_tohost()
-{
-  while(wait_for_packet() != APP_CMD_READ_CONTROL_REG);
-}
-
-void appserver_link_t::wait_for_fromhost()
-{
-  while(wait_for_packet() != APP_CMD_WRITE_CONTROL_REG);
-}
-
-void appserver_link_t::send_packet(packet* p)
-{
-  while(1) try
-  {
-    int bytes = write(tohost_fd,p,offsetof(packet,data)+p->data_size);
-    if(bytes == -1 || (size_t)bytes != offsetof(packet,data)+p->data_size)
-      throw io_error("write failed");
-    return;
-  }
-  catch(io_error e)
-  {
-    fprintf(stderr,"warning: %s\n",e.what());
-  }
-}
-
-void appserver_link_t::nack(uint16_t nack_seqno)
-{
-  packet p = {APP_CMD_NACK,nack_seqno,0,0};
-  send_packet(&p);
-}
-
-int appserver_link_t::wait_for_packet()
-{
-  while(1) try
-  {
-    packet p;
-    int bytes = read(fromhost_fd,&p,sizeof(p));
-    if(bytes < (signed)offsetof(packet,data))
-      throw io_error("read failed");
-  
-    if(p.seqno != seqno)
-    {
-      nack(p.seqno);
-      continue;
-    }
-
-    packet ackpacket = {APP_CMD_ACK,seqno,0,0};
-
-    switch(p.cmd)
-    {
-      case APP_CMD_START:
-        break;
-      case APP_CMD_STOP:
-        send_packet(&ackpacket);
-        throw quit_sim();
-      case APP_CMD_READ_MEM:
-        demand(p.addr % APP_DATA_ALIGN == 0, "misaligned address");
-        demand(p.data_size % APP_DATA_ALIGN == 0, "misaligned data");
-        demand(p.data_size <= APP_MAX_DATA_SIZE, "long read data");
-        demand(p.addr <= sim->memsz && p.addr+p.data_size <= sim->memsz, "out of bounds: 0x%llx",(unsigned long long)p.addr);
-        ackpacket.data_size = p.data_size;
-
-        static_assert(APP_DATA_ALIGN >= sizeof(uint64_t))
-        for(size_t i = 0; i < p.data_size/8; i++)
-          ((uint64_t*)ackpacket.data)[i] = sim->mmu->load_uint64(p.addr+i*8);
-        break;
-      case APP_CMD_WRITE_MEM:
-        demand(p.addr % APP_DATA_ALIGN == 0, "misaligned address");
-        demand(p.data_size % APP_DATA_ALIGN == 0, "misaligned data");
-        demand(p.data_size <= bytes - offsetof(packet,data), "short packet");
-        demand(p.addr <= sim->memsz && p.addr+p.data_size <= sim->memsz, "out of bounds: 0x%llx",(unsigned long long)p.addr);
-
-        for(size_t i = 0; i < p.data_size/8; i++)
-          sim->mmu->store_uint64(p.addr+i*8, ((uint64_t*)p.data)[i]);
-        break;
-      case APP_CMD_READ_CONTROL_REG:
-        demand(p.addr == 16,"bad control reg");
-        demand(p.data_size == sizeof(reg_t),"bad control reg size");
-        ackpacket.data_size = sizeof(reg_t);
-        memcpy(ackpacket.data,&sim->tohost,sizeof(reg_t));
-        break;
-      case APP_CMD_WRITE_CONTROL_REG:
-        demand(p.addr == 17,"bad control reg");
-        demand(p.data_size == sizeof(reg_t),"bad control reg size");
-        sim->tohost = 0;
-        memcpy(&sim->fromhost,p.data,sizeof(reg_t));
-        break;
-    }
-
-    send_packet(&ackpacket);
-    seqno++;
-    return p.cmd;
-  }
-  catch(io_error e)
-  {
-    fprintf(stderr,"warning: %s\n",e.what());
-  }
-}
-