diff options
Diffstat (limited to 'sim/arm/communicate.c')
| -rw-r--r-- | sim/arm/communicate.c | 254 |
1 files changed, 0 insertions, 254 deletions
diff --git a/sim/arm/communicate.c b/sim/arm/communicate.c deleted file mode 100644 index 4d97647..0000000 --- a/sim/arm/communicate.c +++ /dev/null @@ -1,254 +0,0 @@ -/* communicate.c -- ARMulator RDP comms code: ARM6 Instruction Emulator. - Copyright (C) 1994 Advanced RISC Machines Ltd. - - 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 3 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, see <http://www.gnu.org/licenses/>. */ - -/**************************************************************************/ -/* Functions to read and write characters or groups of characters */ -/* down sockets or pipes. Those that return a value return -1 on failure */ -/* and 0 on success. */ -/**************************************************************************/ - -#include <sys/time.h> -#include <sys/types.h> -#include <sys/socket.h> -#include <netinet/in.h> - -#include "armdefs.h" - -/* The socket to the debugger */ -int debugsock; - -/* The maximum number of file descriptors */ -extern int nfds; - -/* The socket handle */ -extern int sockethandle; - -/* Read and Write routines down a pipe or socket */ - -/****************************************************************/ -/* Read an individual character. */ -/* All other read functions rely on this one. */ -/* It waits 15 seconds until there is a character available: if */ -/* no character is available, then it timeouts and returns -1. */ -/****************************************************************/ -int -MYread_char (int sock, unsigned char *c) -{ - int i; - fd_set readfds; - struct timeval timeout = { 15, 0 }; - struct sockaddr_in isa; - -retry: - - FD_ZERO (&readfds); - FD_SET (sock, &readfds); - - i = select (nfds, &readfds, (fd_set *) 0, (fd_set *) 0, &timeout); - - if (i < 0) - { - perror ("select"); - exit (1); - } - - if (!i) - { - fprintf (stderr, "read: Timeout\n"); - return -1; - } - - if ((i = read (sock, c, 1)) < 1) - { - if (!i && sock == debugsock) - { - fprintf (stderr, "Connection with debugger severed.\n"); - /* This shouldn't be necessary for a detached armulator, but - the armulator cannot be cold started a second time, so - this is probably preferable to locking up. */ - return -1; - fprintf (stderr, "Waiting for connection from debugger..."); - debugsock = accept (sockethandle, &isa, &i); - if (debugsock == -1) - { /* Now we are in serious trouble... */ - perror ("accept"); - return -1; - } - fprintf (stderr, " done.\nConnection Established.\n"); - sock = debugsock; - goto retry; - } - perror ("read"); - return -1; - } - -#ifdef DEBUG - if (sock == debugsock) - fprintf (stderr, "<%02x ", *c); -#endif - - return 0; -} - -/****************************************************************/ -/* Read an individual character. */ -/* It waits until there is a character available. Returns -1 if */ -/* an error occurs. */ -/****************************************************************/ -int -MYread_charwait (int sock, unsigned char *c) -{ - int i; - fd_set readfds; - struct sockaddr_in isa; - -retry: - - FD_ZERO (&readfds); - FD_SET (sock, &readfds); - - i = select (nfds, &readfds, - (fd_set *) 0, (fd_set *) 0, (struct timeval *) 0); - - if (i < 0) - { - perror ("select"); - exit (-1); - } - - if ((i = read (sock, c, 1)) < 1) - { - if (!i && sock == debugsock) - { - fprintf (stderr, "Connection with debugger severed.\n"); - return -1; - fprintf (stderr, "Waiting for connection from debugger..."); - debugsock = accept (sockethandle, &isa, &i); - if (debugsock == -1) - { /* Now we are in serious trouble... */ - perror ("accept"); - return -1; - } - fprintf (stderr, " done.\nConnection Established.\n"); - sock = debugsock; - goto retry; - } - perror ("read"); - return -1; - } - -#ifdef DEBUG - if (sock == debugsock) - fprintf (stderr, "<%02x ", *c); -#endif - - return 0; -} - -void -MYwrite_char (int sock, unsigned char c) -{ - - if (write (sock, &c, 1) < 1) - perror ("write"); -#ifdef DEBUG - if (sock == debugsock) - fprintf (stderr, ">%02x ", c); -#endif -} - -int -MYread_word (int sock, ARMword * here) -{ - unsigned char a, b, c, d; - - if (MYread_char (sock, &a) < 0) - return -1; - if (MYread_char (sock, &b) < 0) - return -1; - if (MYread_char (sock, &c) < 0) - return -1; - if (MYread_char (sock, &d) < 0) - return -1; - *here = a | b << 8 | c << 16 | d << 24; - return 0; -} - -void -MYwrite_word (int sock, ARMword i) -{ - MYwrite_char (sock, i & 0xff); - MYwrite_char (sock, (i & 0xff00) >> 8); - MYwrite_char (sock, (i & 0xff0000) >> 16); - MYwrite_char (sock, (i & 0xff000000) >> 24); -} - -void -MYwrite_string (int sock, char *s) -{ - int i; - for (i = 0; MYwrite_char (sock, s[i]), s[i]; i++); -} - -int -MYread_FPword (int sock, char *putinhere) -{ - int i; - for (i = 0; i < 16; i++) - if (MYread_char (sock, &putinhere[i]) < 0) - return -1; - return 0; -} - -void -MYwrite_FPword (int sock, char *fromhere) -{ - int i; - for (i = 0; i < 16; i++) - MYwrite_char (sock, fromhere[i]); -} - -/* Takes n bytes from source and those n bytes */ -/* down to dest */ -int -passon (int source, int dest, int n) -{ - char *p; - int i; - - p = (char *) malloc (n); - if (!p) - { - perror ("Out of memory\n"); - exit (1); - } - if (n) - { - for (i = 0; i < n; i++) - if (MYread_char (source, &p[i]) < 0) - return -1; - -#ifdef DEBUG - if (dest == debugsock) - for (i = 0; i < n; i++) - fprintf (stderr, ")%02x ", (unsigned char) p[i]); -#endif - - write (dest, p, n); - } - free (p); - return 0; -} |