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authorStan Shebs <shebs@codesourcery.com>1999-04-16 01:34:07 +0000
committerStan Shebs <shebs@codesourcery.com>1999-04-16 01:34:07 +0000
commit071ea11e85eb9d529cc5eb3d35f6247466a21b99 (patch)
tree5deda65b8d7b04d1f4cbc534c3206d328e1267ec /gdb/ser-e7kpc.c
parent1730ec6b1848f0f32154277f788fb29f88d8475b (diff)
downloadbinutils-gdb-071ea11e85eb9d529cc5eb3d35f6247466a21b99.tar.gz
Initial creation of sourceware repository
Diffstat (limited to 'gdb/ser-e7kpc.c')
-rw-r--r--gdb/ser-e7kpc.c470
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diff --git a/gdb/ser-e7kpc.c b/gdb/ser-e7kpc.c
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--- a/gdb/ser-e7kpc.c
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-/* Remote serial interface using Hitachi E7000 PC ISA card in a PC
- Copyright 1994, 1999 Free Software Foundation, Inc.
-
-This file is part of GDB.
-
-This program is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2 of the License, or
-(at your option) any later version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
-Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
-
-#if defined __GO32__ || defined _WIN32
-#include "defs.h"
-#include "serial.h"
-#include "gdb_string.h"
-
-/* MSVC uses strnicmp instead of strncasecmp */
-#ifdef _MSC_VER
-#define strncasecmp strnicmp
-#define WIN32_LEAN_AND_MEAN
-#endif
-
-#ifdef _WIN32
-#include <windows.h>
-#endif
-
-#ifdef __GO32__
-#include <sys/dos.h>
-#endif
-
-static int e7000pc_open PARAMS ((serial_t scb, const char *name));
-static void e7000pc_raw PARAMS ((serial_t scb));
-static int e7000pc_readchar PARAMS ((serial_t scb, int timeout));
-static int e7000pc_setbaudrate PARAMS ((serial_t scb, int rate));
-static int e7000pc_write PARAMS ((serial_t scb, const char *str, int len));
-static void e7000pc_close PARAMS ((serial_t scb));
-static serial_ttystate e7000pc_get_tty_state PARAMS ((serial_t scb));
-static int e7000pc_set_tty_state PARAMS ((serial_t scb, serial_ttystate state));
-
-#define OFF_DPD 0x0000
-#define OFF_DDP 0x1000
-#define OFF_CPD 0x2000
-#define OFF_CDP 0x2400
-#define OFF_FA 0x3000
-#define OFF_FB 0x3002
-#define OFF_FC 0x3004
-#define OFF_IRQTOD 0x3008
-#define OFF_IRQTOP 0x300a
-#define OFF_READY 0x300c
-#define OFF_PON 0x300e
-
-#define IDLE 0x0000
-#define CMD_CI 0x4349
-#define CMD_CO 0x434f
-#define CMD_LO 0x4c4f
-#define CMD_LS 0x4c53
-#define CMD_SV 0x5356
-#define CMD_SS 0x5353
-#define CMD_OK 0x4f4b
-#define CMD_ER 0x4552
-#define CMD_NF 0x4e46
-#define CMD_AB 0x4142
-#define CMD_ED 0x4544
-#define CMD_CE 0x4345
-
-static unsigned long fa;
-static unsigned long irqtod;
-static unsigned long ready;
-static unsigned long fb;
-static unsigned long cpd ;
-static unsigned long cdp ;
-static unsigned long ready;
-static unsigned long pon;
-static unsigned long irqtop;
-static unsigned long board_at;
-
-#ifdef __GO32__
-
-#define SET_BYTE(x,y) { char _buf = y;dosmemput(&_buf,1, x);}
-#define SET_WORD(x,y) { short _buf = y;dosmemput(&_buf,2, x);}
-#define GET_BYTE(x) ( dosmemget(x,1,&bb), bb)
-#define GET_WORD(x) ( dosmemget(x,2,&sb), sb)
-static unsigned char bb;
-static unsigned short sb;
-
-#else /* win32 */
-
-#define SET_BYTE(x,y) *(volatile unsigned char *)(x) = (y)
-#define SET_WORD(x,y) *(volatile unsigned short *)(x) = (y)
-#define GET_BYTE(x) (*(volatile unsigned char *)(x))
-#define GET_WORD(x) (*(volatile unsigned short *)(x))
-#define dosmemget(FROM, LEN, TO) memcpy ((void *)(TO), (void *)(FROM), (LEN))
-#define dosmemput(FROM, LEN, TO) memcpy ((void *)(TO), (void *)(FROM), (LEN))
-#endif
-
-static struct sw
-{
- int sw;
- int addr;
-} sigs[] = {
- {0x14, 0xd0000},
- {0x15, 0xd4000},
- {0x16, 0xd8000},
- {0x17, 0xdc000},
- 0};
-
-#ifdef _MSC_VER
-/* Get the base of the data segment. This is needed to calculate the offset
- between data segment addresses and the base of linear memory, which is where
- device registers reside. Note that this is really only necessary for
- Win32s, since Win95 and NT keep the data segment at linear 0. */
-
-static unsigned long
-get_ds_base (void)
-{
- unsigned short dsval;
- LDT_ENTRY ldt;
- unsigned long dsbase;
-
- __asm
- {
- mov dsval,ds
- }
-
- dsbase = 0;
-
- GetThreadSelectorEntry (GetCurrentThread(), dsval, &ldt);
-
- dsbase = ldt.HighWord.Bits.BaseHi << 24 | ldt.HighWord.Bits.BaseMid << 16
- | ldt.BaseLow;
-
- return dsbase;
-}
-#else /* !_MSC_VER */
-#define get_ds_base() 0
-#endif /* _MSC_VER */
-
-static int
-e7000pc_init ()
-{
- int try;
- unsigned long dsbase;
-
- dsbase = get_ds_base ();
-
- /* Look around in memory for the board's signature */
-
- for (try = 0; sigs[try].sw; try++)
- {
- int val;
- board_at = sigs[try].addr - dsbase;
- fa = board_at + OFF_FA;
- fb = board_at + OFF_FB;
- cpd = board_at + OFF_CPD;
- cdp = board_at + OFF_CDP;
- ready =board_at + OFF_READY;
- pon = board_at + OFF_PON;
- irqtop = board_at + OFF_IRQTOP;
- irqtod = board_at + OFF_IRQTOD;
-
- val = GET_WORD (ready);
-
- if (val == (0xaaa0 | sigs[try].sw))
- {
- if (GET_WORD (pon) & 0xf)
- {
- SET_WORD (fa, 0);
- SET_WORD (fb, 0);
-
- SET_WORD (irqtop, 1); /* Disable interrupts from e7000 */
- SET_WORD (ready, 1);
- printf_filtered ("\nConnected to the E7000PC at address 0x%x\n",
- sigs[try].addr);
- return 1;
- }
- error ("The E7000 PC board is working, but the E7000 is turned off.\n");
- return 0;
- }
- }
-
- error ("GDB cannot connect to the E7000 PC board, check that it is installed\n\
-and that the switch settings are correct. Some other DOS programs can \n\
-stop the board from working. Try starting from a very minimal boot, \n\
-perhaps you need to disable EMM386 over the region where the board has\n\
-its I/O space, remove other unneeded cards, etc etc\n");
- return 0;
-
-}
-
-static int pbuf_size;
-static int pbuf_index;
-
-/* Return next byte from cdp. If no more, then return -1. */
-
-static int
-e7000_get (void)
-{
- static char pbuf[1000];
- char tmp[1000];
- int x;
-
- if (pbuf_index < pbuf_size)
- {
- x = pbuf[pbuf_index++];
- }
- else if ((GET_WORD (fb) & 1))
- {
- int i;
- pbuf_size = GET_WORD (cdp + 2);
-
- dosmemget (cdp + 8, pbuf_size + 1, tmp);
-
- /* Tell the E7000 we've eaten */
- SET_WORD (fb, 0);
- /* Swap it around */
- for (i = 0; i < pbuf_size; i++)
- {
- pbuf[i] = tmp[i^1];
- }
- pbuf_index = 0;
- x = pbuf[pbuf_index++];
- }
- else
- {
- x = -1;
- }
- return x;
-}
-
-/* Works just like read(), except that it takes a TIMEOUT in seconds. Note
- that TIMEOUT == 0 is a poll, and TIMEOUT == -1 means wait forever. */
-
-static int
-dosasync_read (fd, buf, len, timeout)
- int fd;
- char *buf;
- int len;
- int timeout;
-
-{
- long now;
- long then;
- int i = 0;
-
- /* Then look for some more if we're still hungry */
- time (&now);
- then = now + timeout;
- while (i < len)
- {
- int ch = e7000_get();
-
- /* While there's room in the buffer, and we've already
- read the stuff in, suck it over */
- if (ch != -1)
- {
- buf[i++] = ch;
- while (i < len && pbuf_index < pbuf_size )
- {
- ch = e7000_get();
- if (ch == -1)
- break;
- buf[i++] = ch;
- }
- }
-
- time (&now);
-
- if (timeout == 0)
- return i;
- if (now >= then && timeout > 0)
- {
- return i;
- }
- }
- return len;
-}
-
-
-static int
-dosasync_write (fd, buf, len)
- int fd;
- const char *buf;
- int len;
-{
- int i;
- char dummy[1000];
-
- /* Construct copy locally */
- ((short *)dummy)[0] = CMD_CI;
- ((short *)dummy)[1] = len;
- ((short *)dummy)[2] = 0;
- ((short *)dummy)[3] = 0;
- for (i = 0; i < len ; i++)
- {
- dummy[8 + i ^ 1] = buf[i];
- }
-
- /* Wait for the card to get ready */
- while (GET_WORD (fa) & 1) ;
-
- /* Blast onto the ISA card */
- dosmemput (dummy, 8 + len + 1, cpd);
-
- SET_WORD (fa, 1);
- SET_WORD (irqtod, 1); /* Interrupt the E7000 */
-
- return len;
-}
-
-static int
-e7000pc_open (scb, name)
- serial_t scb;
- const char *name;
-{
- if (strncasecmp (name, "pc", 2) != 0)
- {
- errno = ENOENT;
- return -1;
- }
-
- scb->fd = e7000pc_init ();
-
- if (!scb->fd)
- return -1;
-
- return 0;
-}
-
-static int
-e7000pc_noop (scb)
- serial_t scb;
-{
- return 0;
-}
-
-static void
-e7000pc_raw (scb)
- serial_t scb;
-{
- /* Always in raw mode */
-}
-
-static int
-e7000pc_readchar (scb, timeout)
- serial_t scb;
- int timeout;
-{
- char buf;
-
- top:
-
- if (dosasync_read (scb->fd, &buf, 1, timeout))
- {
- if (buf == 0) goto top;
- return buf;
- }
- else
- return SERIAL_TIMEOUT;
-}
-
-struct e7000pc_ttystate {
- int dummy;
-};
-
-/* e7000pc_{get set}_tty_state() are both dummys to fill out the function
- vector. Someday, they may do something real... */
-
-static serial_ttystate
-e7000pc_get_tty_state (scb)
- serial_t scb;
-{
- struct e7000pc_ttystate *state;
-
- state = (struct e7000pc_ttystate *) xmalloc (sizeof *state);
-
- return (serial_ttystate) state;
-}
-
-static int
-e7000pc_set_tty_state (scb, ttystate)
- serial_t scb;
- serial_ttystate ttystate;
-{
- return 0;
-}
-
-static int
-e7000pc_noflush_set_tty_state (scb, new_ttystate, old_ttystate)
- serial_t scb;
- serial_ttystate new_ttystate;
- serial_ttystate old_ttystate;
-{
- return 0;
-}
-
-static void
-e7000pc_print_tty_state (scb, ttystate)
- serial_t scb;
- serial_ttystate ttystate;
-{
- /* Nothing to print. */
- return;
-}
-
-static int
-e7000pc_setbaudrate (scb, rate)
- serial_t scb;
- int rate;
-{
- return 0;
-}
-
-static int
-e7000pc_write (scb, str, len)
- serial_t scb;
- const char *str;
- int len;
-{
- dosasync_write (scb->fd, str, len);
-
- return 0;
-}
-
-static void
-e7000pc_close (scb)
- serial_t scb;
-{
-}
-
-static struct serial_ops e7000pc_ops =
-{
- "pc",
- 0,
- e7000pc_open,
- e7000pc_close,
- e7000pc_readchar,
- e7000pc_write,
- e7000pc_noop, /* flush output */
- e7000pc_noop, /* flush input */
- e7000pc_noop, /* send break -- currently used only for nindy */
- e7000pc_raw,
- e7000pc_get_tty_state,
- e7000pc_set_tty_state,
- e7000pc_print_tty_state,
- e7000pc_noflush_set_tty_state,
- e7000pc_setbaudrate,
- e7000pc_noop, /* wait for output to drain */
-};
-
-void
-_initialize_ser_e7000pc ()
-{
- serial_add_interface (&e7000pc_ops);
-}
-#else
-
-void
-_initialize_ser_e7000pc ()
-{
-
-}
-#endif