From e431d135cfc579960b914df3d85aa68be936c44a Mon Sep 17 00:00:00 2001 From: Stu Grossman Date: Fri, 9 Jun 1995 21:53:55 +0000 Subject: [PATCH] * remote-nrom.c: Remove everything but download code. More cleanups. --- gdb/remote-nrom.c | 1092 ++------------------------------------------- 1 file changed, 40 insertions(+), 1052 deletions(-) diff --git a/gdb/remote-nrom.c b/gdb/remote-nrom.c index 0a0a9594487..eeaf3637d97 100644 --- a/gdb/remote-nrom.c +++ b/gdb/remote-nrom.c @@ -29,395 +29,35 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #include "defs.h" #include "gdbcmd.h" #include "serial.h" - -#include -#include "inferior.h" -#include "wait.h" -#include "value.h" -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include "terminal.h" #include "target.h" -#include "gdbcore.h" - -/* Packet header found on every packet sent to/from GDB. */ - -typedef struct gpkthdr { - unsigned char csum; /* Check sum */ - unsigned char seq_num; /* Sequence number */ - unsigned short len; /* Number of bytes in packet */ - unsigned char cmd; /* GDB command */ - unsigned char pad[3]; - unsigned long addr; /* Address if needed */ - unsigned long datalen; /* # of bytes to read/write */ -} GPKTHDR; - -#define GDB_START_DELIMITER '[' -#define GDB_END_DELIMITER ']' - -/* GDB requests. */ - -#define GDB_QUERY_CMD 0x01 -#define GDB_STATUS 0x02 -#define GDB_READ_REGS 0x03 -#define GDB_WRITE_REGS 0x04 -#define GDB_READ_MEM 0x05 -#define GDB_WRITE_MEM 0x06 -#define GDB_CONTINUE 0x07 -#define GDB_STEP 0x08 - -/* Responses. */ - -#define GDB_ACK 0x11 -#define GDB_NACK 0x12 -#define GDB_READ_REG_RESP 0x13 -#define GDB_READ_MEM_RESP 0x14 -#define GDB_WRITE_REG_RESP 0x15 -#define GDB_WRITE_MEM_RESP 0x16 - -#define GDB_BP_TRAP "05" -#define GDB_BUSERR_TRAP "10" -#define GDB_ILLOP_TRAP "40" - -#define GDB_ACK_VALUE "OK" /* Default ports used to talk with the NetROM. */ -#define DEFAULT_NETROM_TARGET_PORT 1235 #define DEFAULT_NETROM_LOAD_PORT 1236 #define DEFAULT_NETROM_CONTROL_PORT 1237 -#define UC(b) (((long)b)&0xff) - -#define NROM_BUF_SIZE 2048 -#define MAX_SEND_ATTEMPTS 10 -#define READ_BUF_SIZE 2048 - -/* Definitions for filetype. */ - -#define BINARY_FTYPE 0 -#define MOTO_SREC 1 -#define INTEL_HEX 2 - -#if 0 /* for debugging, if anyone cares */ -static char *GCMDTYPE[] = { - "ZERO", - "GDB_QUERY", - "GDB_STATUS", - "GDB_READ_REGS", - "GDB_WRITE_REGS", - "GDB_READ_MEM", - "GDB_WRITE_MEM", - "GDB_CONTINUE", - "GDB_STEP", - "CMD9", - "CMDA", - "CMDB", - "CMDC", - "CMDD", - "CMDE", - "CMDF", - "RESP0", - "GDB_ACK", - "GDB_NACK", - "GDB_READ_REG_RESP", - "GDB_READ_MEM_RESP", - "GDB_WRITE_REG_RESP", - "GDB_WRITE_MEM_RESP" -}; -#endif - -static void nrom_attach PARAMS ((char *, int)); - -static int nrom_can_run PARAMS ((void)); - -static void nrom_close PARAMS ((int)); - -static void nrom_create_inferior PARAMS ((char *, char *, char **)); - -static void nrom_detach PARAMS ((char *, int)); - -static void nrom_fetch_registers PARAMS ((int)); - -static void nrom_files_info PARAMS ((struct target_ops *)); - -static void nrom_kill PARAMS ((void)); - -static void nrom_load PARAMS ((char *, int)); - -static void nrom_mourn PARAMS ((void)); - -static void nrom_open PARAMS ((char *,int)); - -static void nrom_resume PARAMS ((int, int, enum target_signal)); - -static void nrom_prepare_to_store PARAMS ((void)); - -static void nrom_store_registers PARAMS ((int)); - -static int nrom_wait PARAMS ((int pid, struct target_waitstatus *status)); - -static int nrom_xfer_inferior_memory PARAMS ((CORE_ADDR, char *, int, int, - struct target_ops *)); - -static int nrom_write_inferior_memory PARAMS ((CORE_ADDR, char *, int)); - -static int nrom_read_inferior_memory PARAMS ((CORE_ADDR, char *, int)); +static void nrom_close PARAMS ((int quitting)); /* New commands. */ -static void nrom_set_target_port PARAMS ((char *, int)); - -static void nrom_set_control_port PARAMS ((char *, int)); - -static void nrom_set_load_port PARAMS ((char *, int)); - -static void nrom_set_ipaddr PARAMS ((char *, int)); - -static void nrom_set_filetype PARAMS ((char *, int)); - -static void nrom_show_status PARAMS ((char *, int)); - static void nrom_passthru PARAMS ((char *, int)); -/* Packet functions. */ - -static void build_pkt PARAMS ((int, unsigned char *, long, - unsigned char *, unsigned long, unsigned long, - int)); - -static int compute_csum PARAMS ((unsigned char *, int)); - -#if 0 -static void dump_pkt PARAMS ((GPKTHDR *, unsigned char *)); -#endif - -static int get_seq_number PARAMS ((void)); - -static char *hex2mem PARAMS ((char *, char *, int)); - -static char *mem2hex PARAMS ((char *, char *, int)); - -static void nrom_send PARAMS ((int, char *, int, long, long, char *)); - -static void send_query_cmd PARAMS ((void)); - -static int send_pkt PARAMS ((int, char *, int, long, int)); - -static int read_pkt PARAMS ((char *)); - -static void send_query_cmd PARAMS ((void)); - -static int tohex PARAMS ((int)); - -static int parse_pkt PARAMS ((unsigned char *, GPKTHDR *, char *)); - -static int writen PARAMS ((int, char *, int)); - -/* Private globals. */ - /* We talk to the NetROM over these sockets. */ -static int nrom_load_sock = -1; -static int nrom_targ_sock = -1; -static int nrom_ctrl_sock = -1; - static serial_t load_desc = NULL; -static serial_t targ_desc = NULL; static serial_t ctrl_desc = NULL; -/* For binding to the socket we ned a sockaddr_in structure. */ - -static struct sockaddr_in nrom_sin; - -/* The IP Address of the NetROM is needed so we know who to talk to. */ - -static unsigned long nrom_ipaddr = 0; - static int load_port = DEFAULT_NETROM_LOAD_PORT; -static int target_port = DEFAULT_NETROM_TARGET_PORT; static int control_port = DEFAULT_NETROM_CONTROL_PORT; -static int nrom_filetype = BINARY_FTYPE; - -static unsigned char host_seq_num = 0; - -static char hexchars[] = "0123456789abcdef"; - -static char freadbuf[READ_BUF_SIZE]; - -static char readbuf[NROM_BUF_SIZE]; -static int bufdata = 0; -static int bufindex = 0; - -static char workbuf[NROM_BUF_SIZE]; -static char sendbuf[NROM_BUF_SIZE]; - static char nrom_hostname[100]; /* Forward data declaration. */ extern struct target_ops nrom_ops; -/* This routine builds a packet to send to gdb running on the host. */ - -static void -build_pkt (cmd, data, datalen, pkt, addr, len, seq) - int cmd; - unsigned char *data; - long datalen; - unsigned char *pkt; - unsigned long addr; - unsigned long len; - int seq; -{ - GPKTHDR phdr; - char *dptr; - char *pktptr; - unsigned char csum; - int plen; - - phdr.csum = 0; - phdr.len = sizeof(GPKTHDR) + datalen; - phdr.seq_num = seq; - phdr.cmd = cmd; - phdr.pad[0] = phdr.pad[1] = phdr.pad[2] = 0; - phdr.addr = addr; - phdr.datalen = len; - /* Convert packet header to ASCII. */ - dptr = mem2hex ((char *) &phdr, pkt, sizeof(GPKTHDR)); - - /* Calculate pkt length now that it is converted. */ - plen = (int) ((unsigned long)dptr - (unsigned long)pkt) + datalen; - /* Put data in packet. */ - if (datalen > 0) - memcpy (dptr, data, datalen); - - /* Compute checksum. For computing checksum we skip first two bytes - since this is where the checksum will go. */ - pktptr = pkt + 2; - csum = compute_csum (pktptr, plen - 2); - *pkt++ = hexchars[csum >> 4]; - *pkt++ = hexchars[csum % 16]; - dptr += datalen; - *dptr = '\0'; -} - -static int -compute_csum (data, len) - unsigned char *data; - int len; -{ - unsigned char csum; - - csum = 0; - while (len > 0) - { - csum += *data++; - --len; - } - return csum; -} - -#if 0 /* for debugging, if anyone cares */ -static void -dump_pkt (hdr, data) - GPKTHDR *hdr; - unsigned char *data; -{ - int i; - - printf_filtered ("PACKET: csum = %x,seq = %d,len = %d\n",hdr->csum,hdr->seq_num, - hdr->len); - - printf_filtered ("cmd = %s,addr = %x, datalen = %d\n", GCMDTYPE[hdr->cmd], - hdr->addr,hdr->datalen); - if (hdr->datalen) - { - for (i = 0; i < hdr->datalen * 2; i++) - printf_filtered ("%x",data[i]); - printf_filtered ("\n"); - } -} -#endif - -static int -get_seq_number() -{ - return host_seq_num++; -} - -int -hex (ch) - int ch; -{ - if ((ch >= 'a') && (ch <= 'f')) - return (ch - 'a' + 10); - if((ch >= 'A') && (ch <= 'F')) - return ((ch - 'A') + 10); - if ((ch >= '0') && (ch <= '9')) - return (ch - '0'); - return 0; -} - -/* Convert the hex array pointed to by buf into binary to be placed in mem - return a pointer to the character AFTER the last byte written. */ - -static char* -hex2mem(buf, mem, count) - char* buf; - char* mem; - int count; -{ - int i; - unsigned char ch; - - for (i = 0; i < count; i++) - { - ch = hex(*buf++) << 4; - ch = ch + hex(*buf++); - *mem++ = ch; - } - return mem; -} - -/* Convert the memory pointed to by mem into hex, placing result in buf - return a pointer to the last char put in buf (null) */ - -static char * -mem2hex (mem, buf, count) - char* mem; - char* buf; - int count; -{ - int i; - unsigned char ch; - - for (i = 0; i < count; i++) - { - ch = *mem++; - *buf++ = hexchars[ch >> 4]; - *buf++ = hexchars[ch % 16]; - } - *buf = 0; - return buf; -} - -/* Scan input from the remote system, until STRING is found. If BUF is non- - zero, then collect input until we have collected either STRING or BUFLEN-1 - chars. In either case we terminate BUF with a 0. If input overflows BUF - because STRING can't be found, return -1, else return number of chars in BUF - (minus the terminating NUL). Note that in the non-overflow case, STRING - will be at the end of BUF. */ +/* Scan input from the remote system, until STRING is found. Print chars that + don't match. */ static int expect (string) @@ -451,16 +91,6 @@ expect (string) } } -static int -nrom_control_send (s, nbytes) - char *s; - int nbytes; -{ - SERIAL_WRITE (ctrl_desc, s, nbytes); - - return 0; -} - static void nrom_kill () { @@ -483,6 +113,13 @@ open_socket (name, port) return desc; } +static void +load_cleanup () +{ + SERIAL_CLOSE (load_desc); + load_desc = NULL; +} + /* Download a file specified in ARGS to the netROM. */ static void @@ -491,23 +128,27 @@ nrom_load (args, fromtty) int fromtty; { int fd, rd_amt, fsize; - struct sockaddr_in sin; bfd *pbfd; asection *section; char *downloadstring = "download 0\n"; + struct cleanup *old_chain; /* Tell the netrom to get ready to download. */ - if (nrom_control_send (downloadstring, strlen (downloadstring)) < 0) + if (SERIAL_WRITE (ctrl_desc, downloadstring, strlen (downloadstring))) error ("nrom_load: control_send() of `%s' failed", downloadstring); expect ("Waiting for a connection...\n"); load_desc = open_socket (nrom_hostname, load_port); + old_chain = make_cleanup (load_cleanup, 0); + pbfd = bfd_openr (args, 0); if (pbfd) { + make_cleanup (bfd_close, pbfd); + if (!bfd_check_format (pbfd, bfd_object)) error ("\"%s\": not in executable format: %s", args, bfd_errmsg (bfd_get_error ())); @@ -561,19 +202,7 @@ nrom_load (args, fromtty) else error ("\"%s\": Could not open", args); - SERIAL_CLOSE (load_desc); - load_desc = NULL; -} - -/* This is called not only when we first attach, but also when the - user types "run" after having attached. */ - -static void -nrom_create_inferior (execfile, args, env) - char *execfile; - char *args; - char **env; -{ + do_cleanups (old_chain); } /* Open a connection to the remote NetROM devices. */ @@ -596,7 +225,6 @@ or IP address of the NetROM device you wish to use."); unpush_target (&nrom_ops); - targ_desc = open_socket (nrom_hostname, target_port); ctrl_desc = open_socket (nrom_hostname, control_port); push_target (&nrom_ops); @@ -605,12 +233,6 @@ or IP address of the NetROM device you wish to use."); printf_filtered ("Connected to NetROM device \"%s\"\n", nrom_hostname); } -static int -nrom_can_run () -{ - return 1; -} - /* Close out all files and local state before this target loses control. */ static void @@ -619,316 +241,8 @@ nrom_close (quitting) { if (load_desc) SERIAL_CLOSE (load_desc); - if (targ_desc) - SERIAL_CLOSE (targ_desc); if (ctrl_desc) SERIAL_CLOSE (ctrl_desc); - - load_desc = NULL; - targ_desc = NULL; - ctrl_desc = NULL; -} - -/* Attach to the target that is already loaded and possibly running */ - -static void -nrom_attach (args, from_tty) - char *args; - int from_tty; -{ - int nwaiting; - char buf[10]; - - if (from_tty) - printf_filtered ("Attaching to NetROM\n"); - - /* clear any pending data on the socket */ - printf_filtered ("Waiting for pending data to arrive... "); - fflush(stdout); - sleep(1); - printf_filtered ("that's long enough!\n"); - while (1) - { - if (ioctl(nrom_targ_sock, FIONREAD, &nwaiting) != 0) - { - /* couldn't determine data left */ - perror("nrom_attach: ioctl FIONREAD"); - break; - } - else if (nwaiting > 0) - { - /* flush incoming data */ - while (nwaiting != 0) - { - if (read (nrom_targ_sock, buf, 1) < 0) - { - perror("nrom_attach: read"); - exit(1); - } - if (remote_debug > 2) - putc(buf[0], stdout); - nwaiting--; - } - } - else - { - /* no more data */ - break; - } - } - printf_filtered ("Pending data removed\n"); - - /* We will get a task spawn event immediately. */ - send_query_cmd (); - target_has_execution = 1; -/* - start_remote(); -*/ -} - -/* Terminate the open connection to the remote debugger. Use this - when you want to detach and do something else with your gdb. */ - -static void -nrom_detach (args, from_tty) - char *args; - int from_tty; -{ - pop_target (); - if (from_tty) - printf_filtered ("Ending remote debugging\n"); -} - -/* Tell the remote machine to resume. */ - -static void -nrom_prepare_to_store() -{ -} - -static void -nrom_resume (pid, step, siggnal) - int pid, step; - enum target_signal siggnal; -{ - if (step) - send_pkt (GDB_STEP, NULL, 0, 0, 0); - else - send_pkt (GDB_CONTINUE, NULL, 0, 0, 0); -} - -/* Wait until the remote machine stops, then return, - storing status in STATUS just as `wait' would. */ - -static int -nrom_wait (pid, status) - int pid; - struct target_waitstatus *status; -{ - static char pkt[NROM_BUF_SIZE], inbuf[NROM_BUF_SIZE]; - GPKTHDR phdr; - - status->kind = TARGET_WAITKIND_EXITED; - status->value.integer = 0; - - while (1) - { - if (read_pkt (pkt) == -1) - continue; - - if (parse_pkt (pkt, &phdr, inbuf) < 0) - { - if (remote_debug) - printf_filtered ("Bad packet in nrom_wait\n"); - send_query_cmd (); - continue; - } - - /* Got good packet. Verify command is right. */ - if (phdr.cmd != GDB_STATUS) - { - /* Wrong response. Resend command. */ - send_query_cmd (); - continue; - } - /* Packet is fine. Exit loop. */ - return inferior_pid; - } -} - -/* Read the remote registers. */ - -static void -nrom_fetch_registers (regno) - int regno; -{ - char buf[NROM_BUF_SIZE]; - char regs[REGISTER_BYTES]; - int i; - -#ifdef DEBUG - printf_filtered ("reg no is %d\n",regno); -#endif - - nrom_send (GDB_READ_REGS, NULL, 0, -1, 0, buf); - memcpy (regs, buf, REGISTER_BYTES); - for (i = 0; i < NUM_REGS; i++) - supply_register (i, ®s[REGISTER_BYTE(i)]); -#ifdef NO_SINGLE_REG - nrom_send (GDB_READ_REGS, NULL, 0, regno, 0, buf); - if (regno != -1) - supply_register(regno,buf); - else - { - memcpy (regs, buf, REGISTER_BYTES); - for (i = 0; i < NUM_REGS; i++) - supply_register (i, ®s[REGISTER_BYTE(i)]); - } -#endif -} - -static void -nrom_send (cmd, data, datalen, addr, len, resp) - int cmd; - char *data; - int datalen; - long addr; - long len; - char *resp; -{ - GPKTHDR phdr; - char inbuf[NROM_BUF_SIZE]; - - while (1) - { - while (send_pkt (cmd, data, datalen, addr, len) < 0) - ; - if (read_pkt (inbuf) != -1) - { - if (parse_pkt (inbuf, &phdr, resp) < 0) - continue; - if (phdr.cmd != GDB_NACK) - return; - } - } -} - -static void -nrom_set_filetype (args, fromtty) - char *args; - int fromtty; -{ - if (args[0] == 'b') - nrom_filetype = BINARY_FTYPE; - else if (args[0] == 'm') - nrom_filetype = MOTO_SREC; - else if (args[0] == 'i') - nrom_filetype = INTEL_HEX; - else - printf_filtered ("Unknown file type\n"); -} - -static void -nrom_set_ipaddr (args, fromtty) - char *args; - int fromtty; -{ - struct hostent *h; - char buf[10]; - int i,j,val; - unsigned long newip = 0; - - /* First do a check to see if they typed in a hostname. */ - if (!(*args)) - error ("Please enter a hostname or IP address"); - - h = gethostbyname (args); - if (h) - { - /* It is a hostname. We just need the ipaddress. */ - memcpy (&nrom_ipaddr, h->h_addr, h->h_length); - } - else - { - /* Better be in decimal dot notation,ie. xx.xx.xx.xx */ - if (isdigit (args[0]) && strchr (args, '.')) - { - j = 4; - while (j) - { - memset (buf, 0, 10); - i = 0; - while((*args) && (*args != '.')) - { - buf[i] = *args++; - i++; - } - if (i) - { - val = (int) strtol (buf, NULL, 10); - - if (val > 255) - error ("Invalid IP address"); - - j--; - newip |= val << (8 * j); - args++; - } - } - } - else - { - error ("Invalid host name/address"); - } - nrom_ipaddr = newip; - } -} - -static void -nrom_set_load_port (args, fromtty) - char *args; - int fromtty; -{ - load_port = (int) strtol (args, NULL, 10); -} - -static void -nrom_set_target_port (args, from_tty) - char *args; - int from_tty; -{ - target_port = (int) strtol (args, NULL, 10); -} - -static void -nrom_set_control_port (args, fromtty) - char *args; - int fromtty; -{ - control_port = (int) strtol (args, NULL, 10); -} - -static void -nrom_show_status (args,from_tty) - char *args; - int from_tty; -{ - unsigned char *i; - - i = (unsigned char *)&nrom_ipaddr; - - printf_filtered ("NetROM target port is %d\n", target_port); - printf_filtered ("NetROM download port is %d\n", load_port); - printf_filtered ("NetROM debug control port is %d\n", control_port); - - printf_filtered ("NetROM IP Address is %d.%d.%d.%d\n", - UC(i[0]), UC(i[1]), UC(i[2]), UC(i[3])); - if (nrom_filetype == BINARY_FTYPE) - printf_filtered ("download filetype is binary\n"); - else if (nrom_filetype == MOTO_SREC) - printf_filtered ("download filetype is moto-srec\n"); - else if (nrom_filetype == INTEL_HEX) - printf_filtered ("download filetype is intel-hex\n"); } /* Pass arguments directly to the NetROM. */ @@ -940,91 +254,11 @@ nrom_passthru (args, fromtty) { char buf[1024]; - sprintf(buf, "%s\n", args); - if (nrom_control_send (buf, strlen (buf)) < 0) + sprintf (buf, "%s\n", args); + if (SERIAL_WRITE (ctrl_desc, buf, strlen (buf))) error ("nrom_reset: control_send() of `%s'failed", args); } -static void -nrom_store_registers (regno) -int regno; -{ - char buf[NROM_BUF_SIZE]; - int i; - char *p; - - p = buf; - for (i = 0; i < REGISTER_BYTES; i++) - { - *p++ = tohex ((registers[i] >> 4) & 0xf); - *p++ = tohex (registers[i] & 0xf); - } - *p = '\0'; - nrom_send (GDB_WRITE_REGS, buf, REGISTER_BYTES * 2, 0, REGISTER_BYTES * 2, - buf); -} - -static int -nrom_xfer_inferior_memory (memaddr, myaddr, len, write, target) - CORE_ADDR memaddr; - char *myaddr; - int len; - int write; - struct target_ops *target; -{ - if (write) - return nrom_write_inferior_memory (memaddr, myaddr, len); - else - return nrom_read_inferior_memory (memaddr, myaddr, len); -} - -/* Copy LEN bytes of data from debugger memory at MYADDR - to inferior's memory at MEMADDR. Returns errno value. */ - -static int -nrom_write_inferior_memory (memaddr, myaddr, len) - CORE_ADDR memaddr; - char *myaddr; - int len; -{ - char buf[NROM_BUF_SIZE],obuf[NROM_BUF_SIZE]; - int i; - char *p; - - p = obuf; - for (i = 0; i < len; i++) - { - *p++ = tohex ((myaddr[i] >> 4) & 0xf); - *p++ = tohex (myaddr[i] & 0xf); - } - *p = '\0'; - nrom_send (GDB_WRITE_MEM, obuf, len * 2, memaddr, len, buf); - - return len; -} - -/* Read LEN bytes from inferior memory at MEMADDR. Put the result - at debugger address MYADDR. Returns errno value. */ - -static int -nrom_read_inferior_memory (memaddr, myaddr, len) - CORE_ADDR memaddr; - char *myaddr; - int len; -{ - char buf[NROM_BUF_SIZE]; - - nrom_send (GDB_READ_MEM, NULL, 0, memaddr, len, buf); - memcpy (myaddr, buf, len); - return len; -} - -static void -nrom_files_info (ignore) - struct target_ops *ignore; -{ -} - static void nrom_mourn() { @@ -1032,241 +266,6 @@ nrom_mourn() generic_mourn_inferior (); } -/* Convert a packet into its parts and verify check sum. */ - -static int -parse_pkt (pkt, hdr, data) - unsigned char *pkt; - GPKTHDR *hdr; - char *data; -{ - unsigned char xcsum; - unsigned char *dptr; - - /* Build packet header from received data. */ - hex2mem (pkt, (char *) hdr, sizeof(GPKTHDR)); - if (remote_debug > 1) - { - printf_filtered ("Packet received: csum = %x,seq number = %x,len = %d\n", - hdr->csum,hdr->seq_num,hdr->len); - printf_filtered ("cmd = %x,addr = %x,datalen = %d\n", - hdr->cmd,hdr->addr,hdr->datalen); - } - /* Skip first two bytes of packet when computing checksum. */ - dptr = (sizeof(GPKTHDR) * 2) + pkt; - pkt += 2; - if (remote_debug > 1) - { - printf_filtered ("Computing checksum over pkt %s\n",pkt); - printf_filtered ("Of length %d\n",strlen(pkt)); - } - xcsum = compute_csum (pkt, strlen (pkt)); - if (xcsum != hdr->csum) - { - if (remote_debug) - printf_filtered ("Checksum failure: computed %x, received %x\n",xcsum, - hdr->csum); - return (-1); - } - - /* Copy data portion to callers data buffer converting from ASCII - to data as we go. */ - hex2mem (dptr, data, hdr->datalen); - return 0; -} - -static int -read_pkt (pkt) - char *pkt; -{ - int n, tries; - struct sockaddr_in from; - int from_len = sizeof(from); - int gotstart; - int total_len; - char *p; - - p = pkt; - total_len = 0; - gotstart = 0; - - while (1) - { - /* Don't let us get wedged if the target is losing. */ - QUIT; - - if (bufdata == 0) - { - bufindex = 0; - n = NROM_BUF_SIZE; - /* Perform read on socket. This will wait. */ - bufdata = recvfrom (nrom_targ_sock, readbuf, n, 0, &from, &from_len); - if (bufdata < 0) - { - printf_filtered ("Error on socket read of %d\n",errno); - return (-1); - } - if (remote_debug > 2) - { - readbuf[bufdata] = '\0'; - printf_filtered ("Received %d bytes. Data is %s\n", - bufdata, readbuf); - } - } - - /* skip stuff between packets */ - while (gotstart == 0 && bufdata != 0 - && readbuf[bufindex] != GDB_START_DELIMITER) - { - bufdata--; - bufindex++; - } - - /* look for a start if we haven't seen one */ - if (gotstart == 0 && bufdata != 0 - && readbuf[bufindex] == GDB_START_DELIMITER) - { - gotstart = 1; - bufindex++; - bufdata--; - } - - /* copy packet data */ - if (gotstart != 0) - { - while (bufdata && readbuf[bufindex] != GDB_END_DELIMITER) - { - *p = readbuf[bufindex]; - p++; - bufdata--; - bufindex++; - total_len++; - if (total_len > NROM_BUF_SIZE) - { - error ("read_pkt: packet length exceeds %d\n", - NROM_BUF_SIZE); - return (-1); - } - } - *p = '\0'; - if (remote_debug > 2) - printf_filtered ("Packet is '%s'\n", pkt); - } - - /* Make sure this is the end of the packet. */ - if (gotstart != 0 && bufdata != 0 - && readbuf[bufindex] == GDB_END_DELIMITER) - { - gotstart = 0; - bufindex++; - bufdata--; - /* Ensure that the packet is terminated. */ - *p = '\0'; - if (remote_debug > 2) - printf_filtered ("Returning '%s'\n", pkt); - return 0; - } - } -} - -static void -send_query_cmd () -{ - while (send_pkt (GDB_QUERY_CMD, NULL, 0, 0, 0) < 0) - ; -} - -static int -send_pkt (cmd, data, datalen, addr, len) - int cmd; - char *data; - int datalen; - long addr; - int len; -{ - char c[2]; - unsigned char seq; - struct sockaddr_in mysin; - int send_cnt; - - while (1) - { - /* Get a sequence number for this packet. */ - seq = get_seq_number (); - /* Build the packet. */ - build_pkt (cmd, data, datalen, workbuf, addr, len, seq); - /* Put delimiters around the pkt. */ - memset (sendbuf, 0, NROM_BUF_SIZE); - sendbuf[0] = GDB_START_DELIMITER; - strcat (sendbuf, workbuf); - c[0] = GDB_END_DELIMITER; - c[1] = '\0'; - strcat (sendbuf, c); - - /* Send the packet out on our socket. */ - if (remote_debug > 1) - printf_filtered ("Sending pkt: %s\n", sendbuf); - mysin.sin_family = AF_INET; - mysin.sin_port = target_port; - mysin.sin_addr.S_un.S_addr = nrom_ipaddr; - - send_cnt = 0; - while (send_cnt < MAX_SEND_ATTEMPTS) - { - if (sendto (nrom_targ_sock, sendbuf, strlen(sendbuf), 0, &mysin, - sizeof(struct sockaddr_in)) < 0) - { - printf_filtered ("sendto error of %d\n", errno); - send_cnt++; - } - else - break; - } - if (send_cnt >= MAX_SEND_ATTEMPTS) - { - printf_filtered ("Socket send failed after %d tries\n", - MAX_SEND_ATTEMPTS); - return (-1); - } - return 1; - } -} - -/* Convert number NIB to a hex digit. */ - -static int -tohex (nib) - int nib; -{ - if (nib < 10) - return '0' + nib; - else - return 'a' + nib - 10; -} - -/* snatched from Stevens, pp279+ */ - -int -writen (sock, ptr, nbytes) - int sock; - char *ptr; - int nbytes; -{ - int nleft, nwritten; - char *buf = ptr; - - nleft = nbytes; - while (nleft > 0) - { - nwritten = write (sock, buf, nleft); - if (nwritten <= 0) - return nwritten; - nleft -= nwritten; - buf += nwritten; - } - return (nbytes - nleft); -} - /* Define the target vector. */ struct target_ops nrom_ops = { @@ -1274,16 +273,16 @@ struct target_ops nrom_ops = { "Remote XDI `NetROM' target", /* to_longname */ "Remote debug using a NetROM over Ethernet", nrom_open, /* to_open */ - nrom_close, - nrom_attach, - nrom_detach, - nrom_resume, - nrom_wait, /* to_wait */ - nrom_fetch_registers, /* to_fetch_registers */ - nrom_store_registers, /* to_store_registers */ - nrom_prepare_to_store, /* to_prepare_to_store */ - nrom_xfer_inferior_memory, /* to_xfer_memory */ - nrom_files_info, /* to_files_info */ + nrom_close, /* to_close */ + NULL, /* to_attach */ + NULL, /* to_detach */ + NULL, /* to_resume */ + NULL, /* to_wait */ + NULL, /* to_fetch_registers */ + NULL, /* to_store_registers */ + NULL, /* to_prepare_to_store */ + NULL, /* to_xfer_memory */ + NULL, /* to_files_info */ NULL, /* to_insert_breakpoint */ NULL, /* to_remove_breakpoint */ NULL, @@ -1294,9 +293,9 @@ struct target_ops nrom_ops = { nrom_kill, nrom_load, NULL, - nrom_create_inferior, /* to_create_inferior */ + NULL, /* to_create_inferior */ nrom_mourn, - nrom_can_run, + NULL, /* to_can_run */ 0, /* to_notice_signals */ 0, download_stratum, /* to_stratum */ @@ -1316,26 +315,15 @@ _initialize_remote_nrom () { add_target (&nrom_ops); - /* Add some commands for helpers. */ - add_cmd ("nrom_ipaddr", no_class, nrom_set_ipaddr, - "Set the IP Address of the NetROM\n", - &setlist); - add_cmd ("target_port", no_class, nrom_set_target_port, - "Set the Port to use for NetROM target communication\n", - &setlist); - add_cmd ("load_port", no_class, nrom_set_load_port, - "Set the Port to use for NetROM downloads\n", - &setlist); - add_cmd ("control_port", no_class, nrom_set_control_port, - "Set the Port to use for NetROM debugger services\n", - &setlist); - add_cmd ("nrom_filetype", no_class, nrom_set_filetype, - "Set the filetype to use on NetROM downloads", - &setlist); - - add_cmd ("nrom", no_class, nrom_show_status, - "Show the current NetROM status\n", - &showlist); + add_show_from_set ( + add_set_cmd ("nrom_load_port", no_class, var_zinteger, (char *)&load_port, + "Set the port to use for NetROM downloads\n", &setlist), + &showlist); + + add_show_from_set ( + add_set_cmd ("nrom_control_port", no_class, var_zinteger, (char *)&control_port, + "Set the port to use for NetROM debugger services\n", &setlist), + &showlist); add_cmd ("nrom", no_class, nrom_passthru, "Pass arguments as command to NetROM", -- 2.30.2