1 files changed, 0 insertions, 361 deletions
diff --git a/gdb/rdi-share/rx.c b/gdb/rdi-share/rx.c
deleted file mode 100644
index 4f434f0..0000000
--- a/gdb/rdi-share/rx.c
+++ /dev/null
@@ -1,361 +0,0 @@
-/* 
- * Copyright (C) 1995 Advanced RISC Machines Limited. All rights reserved.
- * 
- * This software may be freely used, copied, modified, and distributed
- * provided that the above copyright notice is preserved in all copies of the
- * software.
- */
-
-/*-*-C-*-
- *
- * $Revision$
- *     $Date$
- *
- *
- *   Project: ANGEL
- *
- *     Title:  Character reception engine
- */
-
-#include <stdarg.h>    /* ANSI varargs support */
-#include "angel.h"     /* Angel system definitions */
-#include "endian.h"    /* Endian independant memory access macros */
-#include "crc.h"       /* crc generation definitions and headers */
-#include "rxtx.h"
-#include "channels.h"
-#include "buffers.h"
-#ifdef TARGET
-#  include "devdriv.h"
-#endif
-#include "logging.h"
-
-static re_status unexp_stx(struct re_state *rxstate);
-static re_status unexp_etx(struct re_state *rxstate);
-
-/* bitfield for the rx_engine state */
-typedef enum rx_state_flag{
-  RST_STX,
-  RST_TYP,
-  RST_LEN,
-  RST_DAT,
-  RST_CRC,
-  RST_ETX,
-  RST_ESC = (0x1 << 0x3)
-} rx_state_flag;
-
-void Angel_RxEngineInit(const struct re_config *rxconfig,
-                        struct re_state *rxstate)
-{
-  rxstate->rx_state = RST_STX;
-  rxstate->field_c = 0;
-  rxstate->index = 0;
-  rxstate->crc = 0;
-  rxstate->error = RE_OKAY;
-  rxstate->config = rxconfig;
-}
-
-re_status Angel_RxEngine(unsigned char new_ch, struct data_packet *packet,
-                         struct re_state *rxstate)
-{
-  /*
-   * TODO: add the flow control bits in
-   * Note: We test for the data field in a seperate case so we can
-   * completely avoid entering the switch for most chars
-   */
-
-  /* see if we're expecting a escaped char */
-  if ((rxstate->rx_state & RST_ESC) == RST_ESC)
-  {
-    /* unescape the char and unset the flag*/
-    new_ch &= ~serial_ESCAPE;
-#ifdef DO_TRACE
-    __rt_trace("rxe-echar-%2x ", new_ch);
-#endif
-    rxstate->rx_state &= ~RST_ESC;
-  }
-  else if ( (1 << new_ch) & rxstate->config->esc_set )
-  {
-    /* see if the incoming char is a special one */
-    if (new_ch == rxstate->config->esc)
-    {
-#ifdef DO_TRACE
-      __rt_trace("rxe-esc ");
-#endif
-      rxstate->rx_state |= RST_ESC;
-      return RS_IN_PKT;
-    }
-    else
-    {
-      /*
-       * must be a normal packet so do some unexpected etx/stx checking
-       * we haven't been told to escape or received an escape so unless
-       * we are expecting an stx or etx then we can take the unexpected 
-       * stx/etx trap
-       */
-      if ((new_ch == (rxstate->config->stx)) && (rxstate->rx_state != RST_STX))
-        return unexp_stx(rxstate);
-      if ((new_ch == (rxstate->config->etx)) && (rxstate->rx_state != RST_ETX))
-        return unexp_etx(rxstate);
-    }
-  }
-
-  if (rxstate->rx_state == RST_DAT)
-  {
-    /*
-     * do this to speed up the common case, no real penalty for
-     * other cases 
-     */
-#ifdef DO_TRACE
-    __rt_trace("rxe-dat ");
-#endif
-
-    rxstate->crc = crc32(&new_ch, 1, rxstate->crc);
-    (packet->data)[rxstate->index++] = (unsigned int)new_ch & 0xff;
-
-    if (rxstate->index == packet->len)
-      rxstate->rx_state = RST_CRC;
-
-    return RS_IN_PKT;
-  }
-
-  /*
-   * Now that the common case is out of the way we can test for everything
-   * else without worrying quite so much about the speed, changing the
-   * order to len,crc,stx,etx,typ might gain a tiny bit of speed but lets
-   * leave that for the moment
-   */
-  switch (rxstate->rx_state)
-  {
-    case RST_STX:
-      if (new_ch == rxstate->config->stx)
-      {
-        rxstate->rx_state = RST_TYP;
-        rxstate->error = RE_OKAY;
-        rxstate->crc = startCRC32;
-        rxstate->index = 0;
-        return RS_IN_PKT;
-      }
-      else
-      {
-        rxstate->error = RE_OKAY;
-        return RS_WAIT_PKT;
-      }
-
-    case RST_TYP:
-      packet->type = (DevChanID)new_ch;
-      rxstate->rx_state = RST_LEN;
-      rxstate->error = RE_OKAY;
-      rxstate->field_c = 0; /* set up here for the length that follows */
-#ifdef DO_TRACE 
-      __rt_trace("rxe-type-%2x ", packet->type);
-#endif
-      rxstate->crc = crc32(&new_ch, 1, rxstate->crc);
-
-      return RS_IN_PKT;
-
-    case RST_LEN:
-      rxstate->crc = crc32(&new_ch, 1, rxstate->crc);
-
-      if (rxstate->field_c++ == 0)
-      {
-        /* first length byte */
-        packet->len = ((unsigned int)new_ch) << 8;
-        return RS_IN_PKT;
-      }
-      else
-      {
-        /* got the whole legth */
-        packet->len |= new_ch;
-#ifdef DO_TRACE
-        __rt_trace("rxe-len-%4x\n", packet->len);
-#endif
-
-        /* check that the length is ok */
-        if (packet->len == 0)
-        {
-          /* empty pkt */
-          rxstate->field_c = 0;
-          rxstate->rx_state = RST_CRC;
-          return RS_IN_PKT;
-        }
-        else
-        {
-          if (packet->data == NULL)
-          {
-            /* need to alloc the data buffer */
-            if (!rxstate->config->ba_callback(
-                packet, rxstate->config->ba_data)) {
-              rxstate->rx_state = RST_STX;
-              rxstate->error = RE_INTERNAL;
-              return RS_BAD_PKT;
-            }
-          }
-
-          if (packet->len > packet->buf_len)
-          {
-            /* pkt bigger than buffer */
-            rxstate->field_c = 0;
-            rxstate->rx_state = RST_STX;
-            rxstate->error = RE_LEN;
-            return RS_BAD_PKT;
-          }
-          else
-          {
-            /* packet ok */
-            rxstate->field_c = 0;
-            rxstate->rx_state = RST_DAT;
-            return RS_IN_PKT;
-          }
-        }
-      }
-
-    case RST_DAT:
-      /* dummy case (dealt with earlier) */
-#ifdef ASSERTIONS_ENABLED
-      __rt_warning("ERROR: hit RST_dat in switch\n");
-#endif
-      rxstate->rx_state = RST_STX;
-      rxstate->error = RE_INTERNAL;
-      return RS_BAD_PKT;
-
-    case RST_CRC:
-      if (rxstate->field_c == 0)
-        packet->crc = 0;
-
-      packet->crc |= (new_ch & 0xFF) << ((3 - rxstate->field_c) * 8);
-      rxstate->field_c++;
-
-      if (rxstate->field_c == 4)
-      {
-        /* last crc field */
-        rxstate->field_c = 0;
-        rxstate->rx_state = RST_ETX;
-#ifdef DO_TRACE
-        __rt_trace("rxe-rcrc-%8x ", packet->crc);
-#endif
-      }
-
-      return RS_IN_PKT;
-
-    case RST_ETX:
-      if (new_ch == rxstate->config->etx)
-      {
-#if defined(DEBUG) && !defined(NO_PKT_DATA)
-        {
-          int c;
-# ifdef DO_TRACE
-          __rt_trace("\n");
-# endif
-          __rt_info("RXE Data =");
-          for (c=0; c < packet->len; c++)
-            __rt_info("%02x", packet->data[c]);
-          __rt_info("\n"); 
-        }
-#endif
-
-        /* check crc */
-        if (rxstate->crc == packet->crc)
-        {
-          /* crc ok */
-          rxstate->rx_state = RST_STX;
-          rxstate->field_c = 0;
-          return RS_GOOD_PKT;
-        }
-        else
-        {
-#ifdef ASSERTIONS_ENABLED
-          __rt_warning("Bad crc, rx calculates it should be 0x%x\n", rxstate->crc);
-#endif
-          rxstate->rx_state = RST_STX;
-          rxstate->error = RE_CRC;
-          return RS_BAD_PKT;
-        }
-      }
-      else if (new_ch == rxstate->config->stx)
-        return unexp_stx(rxstate);
-      else
-      {
-        rxstate->rx_state = RST_STX;
-        rxstate->error = RE_NETX;
-        return RS_BAD_PKT;
-      }
-
-    default:
-#ifdef ASSERTIONS_ENABLED
-      __rt_warning("ERROR fell through rxengine\n");
-#endif
-      rxstate->rx_state = RST_STX;
-      rxstate->error = RE_INTERNAL;
-      return RS_BAD_PKT;
-  }
-}
-
-static re_status unexp_stx(struct re_state *rxstate)
-{
-#ifdef ASSERTIONS_ENABLED
-  __rt_warning("Unexpected stx\n");
-#endif
-  rxstate->crc = startCRC32;
-  rxstate->index = 0;
-  rxstate->rx_state = RST_TYP;
-  rxstate->error = RE_U_STX;
-  rxstate->field_c = 0;
-  return RS_BAD_PKT;
-}
-
-static re_status unexp_etx(struct re_state *rxstate)
-{
-#ifdef ASSERTIONS_ENABLED
-  __rt_warning("Unexpected etx, rxstate: index= 0x%2x, field_c=0x%2x, state=0x%2x\n", rxstate->index, rxstate->field_c, rxstate->rx_state);
-#endif
-  rxstate->crc = 0;
-  rxstate->index = 0;
-  rxstate->rx_state = RST_STX;
-  rxstate->error = RE_U_ETX;
-  rxstate->field_c = 0;
-  return RS_BAD_PKT;
-}
-
-/*
- * This can be used as the buffer allocation callback for the rx engine,
- * and makes use of angel_DD_GetBuffer() [in devdrv.h]. 
- *
- * Saves duplicating this callback function in every device driver that
- * uses the rx engine.
- *
- * Note that this REQUIRES that the device id is installed as ba_data
- * in the rx engine config structure for the driver.
- */
-bool angel_DD_RxEng_BufferAlloc( struct data_packet *packet, void *cb_data )
-{
-#ifdef TARGET
-    DeviceID devid = (DeviceID)cb_data;
-#else
-    IGNORE(cb_data);
-#endif
-
-    if ( packet->type < DC_NUM_CHANNELS )
-    {
-        /* request a buffer down from the channels layer */
-#ifdef TARGET
-        packet->data = angel_DD_GetBuffer( devid, packet->type,
-                                           packet->len              );
-#else
-        packet->data = malloc(packet->len);
-#endif
-        if ( packet->data == NULL )
-           return FALSE;
-        else
-        {
-            packet->buf_len = packet->len;
-            return TRUE;
-        }
-    }
-    else
-    {
-        /* bad type field */
-        return FALSE;
-    }
-}
-
-/* EOF rx.c */