diff options
Diffstat (limited to 'gdb/remote-vx.68.c')
| -rw-r--r-- | gdb/remote-vx.68.c | 1539 |
1 files changed, 0 insertions, 1539 deletions
diff --git a/gdb/remote-vx.68.c b/gdb/remote-vx.68.c deleted file mode 100644 index f41ce7f..0000000 --- a/gdb/remote-vx.68.c +++ /dev/null @@ -1,1539 +0,0 @@ -/* Memory-access and commands for remote VxWorks processes, for GDB. - Copyright 1990, 1991 Free Software Foundation, Inc. - Contributed by Wind River Systems and Cygnus Support. - -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., 675 Mass Ave, Cambridge, MA 02139, USA. */ - -#define TM_FILE_OVERRIDE -#include "defs.h" -#include "tm-vxworks68.h" -#include "frame.h" -#include "inferior.h" -#include "wait.h" -#include "target.h" -#include "gdbcore.h" -#include "command.h" -#include "symtab.h" -#include "symfile.h" /* for struct complaint */ - -#include <string.h> -#include <errno.h> -#include <signal.h> -#include <fcntl.h> -#include <sys/types.h> -#include <sys/time.h> -#include <sys/socket.h> -#define free bogon_free /* Sun claims "int free()" not void */ -#include <rpc/rpc.h> -#undef free -#include <netdb.h> -#include <ptrace.h> -#include "xdr_ptrace.h" -#include "xdr_ld.h" -#include "xdr_rdb.h" -#include "dbgRpcLib.h" - -/* get rid of value.h if possible */ -#include <value.h> -#include <symtab.h> - -extern void symbol_file_command (); -extern int stop_soon_quietly; /* for wait_for_inferior */ - -static int net_ptrace_clnt_call (); /* Forward decl */ -static enum clnt_stat net_clnt_call (); /* Forward decl */ -extern struct target_ops vx_ops, vx_run_ops; /* Forward declaration */ - -/* Saved name of target host and called function for "info files". - Both malloc'd. */ - -static char *vx_host; -static char *vx_running; - -/* Nonzero means target that is being debugged remotely has a floating - point processor. */ - -static int target_has_fp; - -/* Default error message when the network is forking up. */ - -static const char rpcerr[] = "network target debugging: rpc error"; - -CLIENT *pClient; /* client used in net debugging */ -static int ptraceSock = RPC_ANYSOCK; -extern int errno; - -enum clnt_stat net_clnt_call(); -static void parse_args (); - -static struct timeval rpcTimeout = { 10, 0 }; - -static char *skip_white_space (); -static char *find_white_space (); - -/* Tell the VxWorks target system to download a file. - The load addresses of the text, data, and bss segments are - stored in pTextAddr, pDataAddr, and *pBssAddr (respectively). - Returns 0 for success, -1 for failure. */ - -static int -net_load (filename, pTextAddr, pDataAddr, pBssAddr) - char *filename; - CORE_ADDR *pTextAddr; - CORE_ADDR *pDataAddr; - CORE_ADDR *pBssAddr; - { - enum clnt_stat status; - struct ldfile ldstruct; - struct timeval load_timeout; - - bzero ((char *) &ldstruct, sizeof (ldstruct)); - - /* We invoke clnt_call () here directly, instead of through - net_clnt_call (), because we need to set a large timeout value. - The load on the target side can take quite a while, easily - more than 10 seconds. The user can kill this call by typing - CTRL-C if there really is a problem with the load. */ - - load_timeout.tv_sec = 0x7FFF7FFF; /* A large number, effectively inf. */ - load_timeout.tv_usec = 0; - - status = clnt_call (pClient, VX_LOAD, xdr_wrapstring, &filename, xdr_ldfile, - &ldstruct, load_timeout); - - if (status == RPC_SUCCESS) - { - if (*ldstruct.name == NULL) /* load failed on VxWorks side */ - return -1; - *pTextAddr = ldstruct.txt_addr; - *pDataAddr = ldstruct.data_addr; - *pBssAddr = ldstruct.bss_addr; - return 0; - } - else - return -1; - } - -/* returns 0 if successful, errno if RPC failed or VxWorks complains. */ - -static int -net_break (addr, procnum) - int addr; - u_long procnum; - { - enum clnt_stat status; - int break_status; - Rptrace ptrace_in; /* XXX This is stupid. It doesn't need to be a ptrace - structure. How about something smaller? */ - - bzero ((char *) &ptrace_in, sizeof (ptrace_in)); - break_status = 0; - - ptrace_in.addr = addr; - ptrace_in.pid = inferior_pid; - - status = net_clnt_call (procnum, xdr_rptrace, &ptrace_in, xdr_int, - &break_status); - - if (status != RPC_SUCCESS) - return errno; - - if (break_status == -1) - return ENOMEM; - return break_status; /* probably (FIXME) zero */ - } - -/* returns 0 if successful, errno otherwise */ - -int -vx_insert_breakpoint (addr) - int addr; - { - return net_break (addr, VX_BREAK_ADD); - } - -/* returns 0 if successful, errno otherwise */ - -int -vx_remove_breakpoint (addr) - int addr; - { - return net_break (addr, VX_BREAK_DELETE); - } - -/* Call a function on the VxWorks target system. - ARGS is a vector of values of arguments (NARGS of them). - FUNCTION is a value, the function to be called. - Returns a struct value * representing what the function returned. - May fail to return, if a breakpoint or signal is hit - during the execution of the function. */ - -#ifdef FIXME -/* FIXME, function calls are really fried. GO back to manual method. */ -value -call_function (function, nargs, args) - value function; - int nargs; - value *args; -{ - register CORE_ADDR sp; - register int i; - CORE_ADDR start_sp; - static REGISTER_TYPE dummy[] = CALL_DUMMY; - REGISTER_TYPE dummy1[sizeof dummy / sizeof (REGISTER_TYPE)]; - CORE_ADDR old_sp; - struct type *value_type; - unsigned char struct_return; - CORE_ADDR struct_addr; - struct inferior_status inf_status; - struct cleanup *old_chain; - CORE_ADDR funaddr; - int using_gcc; - - save_inferior_status (&inf_status, 1); - old_chain = make_cleanup (restore_inferior_status, &inf_status); - - /* PUSH_DUMMY_FRAME is responsible for saving the inferior registers - (and POP_FRAME for restoring them). (At least on most machines) - they are saved on the stack in the inferior. */ - PUSH_DUMMY_FRAME; - - old_sp = sp = read_register (SP_REGNUM); - -#if 1 INNER_THAN 2 /* Stack grows down */ - sp -= sizeof dummy; - start_sp = sp; -#else /* Stack grows up */ - start_sp = sp; - sp += sizeof dummy; -#endif - - funaddr = find_function_addr (function, &value_type); - - { - struct block *b = block_for_pc (funaddr); - /* If compiled without -g, assume GCC. */ - using_gcc = b == NULL || BLOCK_GCC_COMPILED (b); - } - - /* Are we returning a value using a structure return or a normal - value return? */ - - struct_return = using_struct_return (function, funaddr, value_type, - using_gcc); - - /* Create a call sequence customized for this function - and the number of arguments for it. */ - bcopy (dummy, dummy1, sizeof dummy); - FIX_CALL_DUMMY (dummy1, start_sp, funaddr, nargs, args, - value_type, using_gcc); - -#if CALL_DUMMY_LOCATION == ON_STACK - write_memory (start_sp, dummy1, sizeof dummy); - -#else /* Not on stack. */ -#if CALL_DUMMY_LOCATION == BEFORE_TEXT_END - /* Convex Unix prohibits executing in the stack segment. */ - /* Hope there is empty room at the top of the text segment. */ - { - static checked = 0; - if (!checked) - for (start_sp = text_end - sizeof dummy; start_sp < text_end; ++start_sp) - if (read_memory_integer (start_sp, 1) != 0) - error ("text segment full -- no place to put call"); - checked = 1; - sp = old_sp; - start_sp = text_end - sizeof dummy; - write_memory (start_sp, dummy1, sizeof dummy); - } -#else /* After text_end. */ - { - int errcode; - sp = old_sp; - start_sp = text_end; - errcode = target_write_memory (start_sp, dummy1, sizeof dummy); - if (errcode != 0) - error ("Cannot write text segment -- vx_call_function failed"); - } -#endif /* After text_end. */ -#endif /* Not on stack. */ - -#ifdef STACK_ALIGN - /* If stack grows down, we must leave a hole at the top. */ - { - int len = 0; - - /* Reserve space for the return structure to be written on the - stack, if necessary */ - - if (struct_return) - len += TYPE_LENGTH (value_type); - - for (i = nargs - 1; i >= 0; i--) - len += TYPE_LENGTH (VALUE_TYPE (value_arg_coerce (args[i]))); -#ifdef CALL_DUMMY_STACK_ADJUST - len += CALL_DUMMY_STACK_ADJUST; -#endif -#if 1 INNER_THAN 2 - sp -= STACK_ALIGN (len) - len; -#else - sp += STACK_ALIGN (len) - len; -#endif - } -#endif /* STACK_ALIGN */ - - /* Reserve space for the return structure to be written on the - stack, if necessary */ - - if (struct_return) - { -#if 1 INNER_THAN 2 - sp -= TYPE_LENGTH (value_type); - struct_addr = sp; -#else - struct_addr = sp; - sp += TYPE_LENGTH (value_type); -#endif - } - -#if defined (REG_STRUCT_HAS_ADDR) - { - /* This is a machine like the sparc, where we need to pass a pointer - to the structure, not the structure itself. */ - if (REG_STRUCT_HAS_ADDR (using_gcc)) - for (i = nargs - 1; i >= 0; i--) - if ( TYPE_CODE (VALUE_TYPE (args[i])) == TYPE_CODE_STRUCT - || TYPE_CODE (VALUE_TYPE (args[i])) == TYPE_CODE_UNION) - { - CORE_ADDR addr; -#if !(1 INNER_THAN 2) - /* The stack grows up, so the address of the thing we push - is the stack pointer before we push it. */ - addr = sp; -#endif - /* Push the structure. */ - sp = value_push (sp, args[i]); -#if 1 INNER_THAN 2 - /* The stack grows down, so the address of the thing we push - is the stack pointer after we push it. */ - addr = sp; -#endif - /* The value we're going to pass is the address of the thing - we just pushed. */ - args[i] = value_from_long (builtin_type_long, (LONGEST) addr); - } - } -#endif /* REG_STRUCT_HAS_ADDR. */ - -#ifdef PUSH_ARGUMENTS - PUSH_ARGUMENTS(nargs, args, sp, struct_return, struct_addr); -#else /* !PUSH_ARGUMENTS */ - for (i = nargs - 1; i >= 0; i--) - sp = value_arg_push (sp, args[i]); -#endif /* !PUSH_ARGUMENTS */ - -#ifdef CALL_DUMMY_STACK_ADJUST -#if 1 INNER_THAN 2 - sp -= CALL_DUMMY_STACK_ADJUST; -#else - sp += CALL_DUMMY_STACK_ADJUST; -#endif -#endif /* CALL_DUMMY_STACK_ADJUST */ - - /* Store the address at which the structure is supposed to be - written. Note that this (and the code which reserved the space - above) assumes that gcc was used to compile this function. Since - it doesn't cost us anything but space and if the function is pcc - it will ignore this value, we will make that assumption. - - Also note that on some machines (like the sparc) pcc uses a - convention like gcc's. */ - - if (struct_return) - STORE_STRUCT_RETURN (struct_addr, sp); - - /* Write the stack pointer. This is here because the statements above - might fool with it. On SPARC, this write also stores the register - window into the right place in the new stack frame, which otherwise - wouldn't happen. (See write_inferior_registers in sparc-xdep.c.) */ - write_register (SP_REGNUM, sp); - - /* Figure out the value returned by the function. */ - { - char retbuf[REGISTER_BYTES]; - - /* Execute the stack dummy routine, calling FUNCTION. - When it is done, discard the empty frame - after storing the contents of all regs into retbuf. */ - run_stack_dummy (start_sp + CALL_DUMMY_START_OFFSET, retbuf); - - do_cleanups (old_chain); - - return value_being_returned (value_type, retbuf, struct_return); - } -} -/* should return a value of some sort */ - -value -vx_call_function (funcAddr, nargs, args, valueType) - char *funcAddr; - int nargs; - value *args; - struct type * valueType; -{ - int i; - func_call funcInfo; - arg_value *argValue; - enum clnt_stat status; - register int len; - arg_value funcReturn; - value gdbValue; - - argValue = (arg_value *) xmalloc (nargs * sizeof (arg_value)); - - bzero (argValue, nargs * sizeof (arg_value)); - bzero (&funcReturn, sizeof (funcReturn)); - - for (i = nargs - 1; i >= 0; i--) - { - len = TYPE_LENGTH (VALUE_TYPE (args [i])); - - switch (TYPE_CODE (VALUE_TYPE (args[i]))) - { - /* XXX put other types here. Where's CHAR, etc??? */ - - case TYPE_CODE_FLT: - argValue[i].type = T_FLOAT; - break; - case TYPE_CODE_INT: - case TYPE_CODE_PTR: - case TYPE_CODE_ENUM: - case TYPE_CODE_FUNC: - argValue[i].type = T_INT; - break; - - case TYPE_CODE_UNDEF: - case TYPE_CODE_ARRAY: - case TYPE_CODE_STRUCT: - case TYPE_CODE_UNION: - case TYPE_CODE_VOID: - case TYPE_CODE_SET: - case TYPE_CODE_RANGE: - case TYPE_CODE_PASCAL_ARRAY: - case TYPE_CODE_MEMBER: /* C++ */ - case TYPE_CODE_METHOD: /* C++ */ - case TYPE_CODE_REF: /* C++ */ - default: - error ("No corresponding VxWorks type for %d. CHECK IT OUT!!!\n", - TYPE_CODE(VALUE_TYPE(args[i]))); - } /* switch */ - if (TYPE_CODE(VALUE_TYPE(args[i])) == TYPE_CODE_FUNC) - argValue[i].arg_value_u.v_int = VALUE_ADDRESS(args[i]); - else - bcopy (VALUE_CONTENTS (args[i]), (char *) &argValue[i].arg_value_u, - len); - } - - /* XXX what should the type of this function addr be? - * XXX Both in gdb and vxWorks - */ - funcInfo.func_addr = (int) funcAddr; - funcInfo.args.args_len = nargs; - funcInfo.args.args_val = argValue; - - status = net_clnt_call (VX_CALL_FUNC, xdr_func_call, (char *) &funcInfo, - xdr_arg_value, &funcReturn); - - free ((char *) argValue); - - if (status == RPC_SUCCESS) - { - /* XXX this assumes that vxWorks ALWAYS returns an int, and that - * XXX gdb isn't expecting anything more - */ - - /******************* - if (funcReturn.type == T_UNKNOWN) - return YYYXXX...; - *******************/ - gdbValue = allocate_value (valueType); - bcopy (&funcReturn.arg_value_u.v_int, VALUE_CONTENTS (gdbValue), - sizeof (int)); - return gdbValue; - } - else - error (rpcerr); - } -#endif /* FIXME */ - -/* Start an inferior process and sets inferior_pid to its pid. - EXEC_FILE is the file to run. - ALLARGS is a string containing the arguments to the program. - ENV is the environment vector to pass. - Returns process id. Errors reported with error(). - On VxWorks, we ignore exec_file. */ - -void -vx_create_inferior (exec_file, args, env) - char *exec_file; - char *args; - char **env; -{ - enum clnt_stat status; - arg_array passArgs; - TASK_START taskStart; - - bzero ((char *) &passArgs, sizeof (passArgs)); - bzero ((char *) &taskStart, sizeof (taskStart)); - - /* parse arguments, put them in passArgs */ - - parse_args (args, &passArgs); - - if (passArgs.arg_array_len == 0) - error ("You must specify a function name to run, and arguments if any"); - - status = net_clnt_call (PROCESS_START, xdr_arg_array, &passArgs, - xdr_TASK_START, &taskStart); - - if ((status != RPC_SUCCESS) || (taskStart.status == -1)) - error ("Can't create process on remote target machine"); - - /* Save the name of the running function */ - if (vx_running) - free (vx_running); - vx_running = savestring (passArgs.arg_array_val[0], - strlen (passArgs.arg_array_val[0])); - -#ifdef CREATE_INFERIOR_HOOK - CREATE_INFERIOR_HOOK (pid); -#endif - - push_target (&vx_run_ops); - inferior_pid = taskStart.pid; - -#if defined (START_INFERIOR_HOOK) - START_INFERIOR_HOOK (); -#endif - - /* We will get a trace trap after one instruction. - Insert breakpoints and continue. */ - - init_wait_for_inferior (); - - /* Set up the "saved terminal modes" of the inferior - based on what modes we are starting it with. */ - target_terminal_init (); - - /* Install inferior's terminal modes. */ - target_terminal_inferior (); - - /* remote_start(args); */ - /* trap_expected = 0; */ - stop_soon_quietly = 1; - wait_for_inferior (); /* Get the task spawn event */ - stop_soon_quietly = 0; - - /* insert_step_breakpoint (); FIXME, do we need this? */ - proceed(-1, -1, 0); -} - -/* Fill ARGSTRUCT in argc/argv form with the arguments from the - argument string ARGSTRING. */ - -static void -parse_args (arg_string, arg_struct) - register char *arg_string; - arg_array *arg_struct; -{ - register int arg_count = 0; /* number of arguments */ - register int arg_index = 0; - register char *p0; - - bzero ((char *) arg_struct, sizeof (arg_array)); - - /* first count how many arguments there are */ - - p0 = arg_string; - while (*p0 != '\0') - { - if (*(p0 = skip_white_space (p0)) == '\0') - break; - p0 = find_white_space (p0); - arg_count++; - } - - arg_struct->arg_array_len = arg_count; - arg_struct->arg_array_val = (char **) xmalloc ((arg_count + 1) - * sizeof (char *)); - - /* now copy argument strings into arg_struct. */ - - while (*(arg_string = skip_white_space (arg_string))) - { - p0 = find_white_space (arg_string); - arg_struct->arg_array_val[arg_index++] = savestring (arg_string, - p0 - arg_string); - arg_string = p0; - } - - arg_struct->arg_array_val[arg_count] = NULL; -} - -/* Advance a string pointer across whitespace and return a pointer - to the first non-white character. */ - -static char * -skip_white_space (p) - register char *p; -{ - while (*p == ' ' || *p == '\t') - p++; - return p; -} - -/* Search for the first unquoted whitespace character in a string. - Returns a pointer to the character, or to the null terminator - if no whitespace is found. */ - -static char * -find_white_space (p) - register char *p; -{ - register int c; - - while ((c = *p) != ' ' && c != '\t' && c) - { - if (c == '\'' || c == '"') - { - while (*++p != c && *p) - { - if (*p == '\\') - p++; - } - if (!*p) - break; - } - p++; - } - return p; -} - -/* Poll the VxWorks target system for an event related - to the debugged task. - Returns -1 if remote wait failed, task status otherwise. */ - -int -net_wait (pEvent) - RDB_EVENT *pEvent; -{ - int pid; - enum clnt_stat status; - - bzero ((char *) pEvent, sizeof (RDB_EVENT)); - - pid = inferior_pid; - status = net_clnt_call (PROCESS_WAIT, xdr_int, &pid, xdr_RDB_EVENT, pEvent); - - return (status == RPC_SUCCESS)? pEvent->status: -1; -} - -/* Suspend the remote task. - Returns -1 if suspend fails on target system, 0 otherwise. */ - -int -net_quit () -{ - int pid; - int quit_status; - enum clnt_stat status; - - quit_status = 0; - - /* don't let rdbTask suspend itself by passing a pid of 0 */ - - if ((pid = inferior_pid) == 0) - return -1; - - status = net_clnt_call (VX_TASK_SUSPEND, xdr_int, &pid, xdr_int, - &quit_status); - - return (status == RPC_SUCCESS)? quit_status: -1; -} - -/* Read a register or registers from the remote system. */ - -int -vx_read_register (regno) - int regno; -{ - int status; - Rptrace ptrace_in; - Ptrace_return ptrace_out; - struct regs inferior_registers; - struct fp_status inferior_fp_registers; - extern char registers[]; - - bzero ((char *) &ptrace_in, sizeof (ptrace_in)); - bzero ((char *) &ptrace_out, sizeof (ptrace_out)); - - /* FIXME, eventually only get the ones we need. */ - registers_fetched (); - - ptrace_in.pid = inferior_pid; - ptrace_out.info.more_data = (caddr_t) &inferior_registers; - status = net_ptrace_clnt_call (PTRACE_GETREGS, &ptrace_in, &ptrace_out); - if (status) - error (rpcerr); - if (ptrace_out.status == -1) - { - errno = ptrace_out.errno; - return -1; - } - -#ifdef I80960 -#else /* I80960 */ - bcopy (&inferior_registers, registers, 16 * 4); - *(int *)®isters[REGISTER_BYTE (PS_REGNUM)] = inferior_registers.r_ps; - *(int *)®isters[REGISTER_BYTE (PC_REGNUM)] = inferior_registers.r_pc; - - if (target_has_fp) - { - ptrace_in.pid = inferior_pid; - ptrace_out.info.more_data = (caddr_t) &inferior_fp_registers; - status = net_ptrace_clnt_call (PTRACE_GETFPREGS, &ptrace_in, &ptrace_out); - if (status) - error (rpcerr); - if (ptrace_out.status == -1) - { - errno = ptrace_out.errno; - return -1; - } - - bcopy (&inferior_fp_registers, ®isters[REGISTER_BYTE (FP0_REGNUM)], - sizeof inferior_fp_registers.fps_regs); - bcopy (&inferior_fp_registers.fps_control, - ®isters[REGISTER_BYTE (FPC_REGNUM)], - sizeof inferior_fp_registers - sizeof inferior_fp_registers.fps_regs); - } - else - { - bzero (®isters[REGISTER_BYTE (FP0_REGNUM)], - sizeof inferior_fp_registers.fps_regs); - bzero (®isters[REGISTER_BYTE (FPC_REGNUM)], - sizeof inferior_fp_registers - sizeof inferior_fp_registers.fps_regs); - } -#endif - return 0; -} - -/* Prepare to store registers. Since we will store all of them, - read out their current values now. */ - -void -vx_prepare_to_store () -{ - vx_read_register (-1); -} - - -/* Store our register values back into the inferior. - If REGNO is -1, do this for all registers. - Otherwise, REGNO specifies which register (so we can save time). */ - /* FIXME, look at REGNO to save time here */ - -vx_write_register (regno) - int regno; -{ - struct regs inferior_registers; - struct fp_status inferior_fp_registers; - extern char registers[]; - int status; - Rptrace ptrace_in; - Ptrace_return ptrace_out; - - bzero ((char *) &ptrace_in, sizeof (ptrace_in)); - bzero ((char *) &ptrace_out, sizeof (ptrace_out)); - - bcopy (registers, &inferior_registers, 16 * 4); - inferior_registers.r_ps = *(int *)®isters[REGISTER_BYTE (PS_REGNUM)]; - inferior_registers.r_pc = *(int *)®isters[REGISTER_BYTE (PC_REGNUM)]; - ptrace_in.pid = inferior_pid; - ptrace_in.info.ttype = REGS; - ptrace_in.info.more_data = (caddr_t) &inferior_registers; - - /* XXX change second param to be a proc number */ - status = net_ptrace_clnt_call (PTRACE_SETREGS, &ptrace_in, &ptrace_out); - if (status) - error (rpcerr); - if (ptrace_out.status == -1) - { - errno = ptrace_out.errno; - return -1; - } - - if (target_has_fp) - { - bcopy (®isters[REGISTER_BYTE (FP0_REGNUM)], &inferior_fp_registers, - sizeof inferior_fp_registers.fps_regs); - bcopy (®isters[REGISTER_BYTE (FPC_REGNUM)], - &inferior_fp_registers.fps_control, - sizeof inferior_fp_registers - sizeof inferior_fp_registers.fps_regs); - - ptrace_in.pid = inferior_pid; - ptrace_in.info.ttype = FPREGS; - ptrace_in.info.more_data = (caddr_t) &inferior_fp_registers; - - status = net_ptrace_clnt_call (PTRACE_SETFPREGS, &ptrace_in, &ptrace_out); - if (status) - error (rpcerr); - if (ptrace_out.status == -1) - { - errno = ptrace_out.errno; - return -1; - } - } - return 0; -} - -/* Copy LEN bytes to or from remote inferior's memory starting at MEMADDR - to debugger memory starting at MYADDR. WRITE is true if writing to the - inferior. - Result is the number of bytes written or read (zero if error). The - protocol allows us to return a negative count, indicating that we can't - handle the current address but can handle one N bytes further, but - vxworks doesn't give us that information. */ - -int -vx_xfer_memory (memaddr, myaddr, len, write) - CORE_ADDR memaddr; - char *myaddr; - int len; -{ - int status; - Rptrace ptrace_in; - Ptrace_return ptrace_out; - C_bytes data; - - bzero ((char *) &ptrace_in, sizeof (ptrace_in)); - bzero ((char *) &ptrace_out, sizeof (ptrace_out)); - - ptrace_in.pid = inferior_pid; /* XXX pid unnecessary for READDATA */ - ptrace_in.addr = (int) memaddr; /* Where from */ - ptrace_in.data = len; /* How many bytes */ - - if (write) - { - ptrace_in.info.ttype = DATA; - ptrace_in.info.more_data = (caddr_t) &data; - - data.bytes = (caddr_t) myaddr; /* Where from */ - data.len = len; /* How many bytes (again, for XDR) */ - - /* XXX change second param to be a proc number */ - status = net_ptrace_clnt_call (PTRACE_WRITEDATA, &ptrace_in, &ptrace_out); - } - else - { - ptrace_out.info.more_data = (caddr_t) &data; - data.bytes = myaddr; /* Where to */ - data.len = len; /* How many (again, for XDR) */ - - /* XXX change second param to be a proc number */ - status = net_ptrace_clnt_call (PTRACE_READDATA, &ptrace_in, &ptrace_out); - } - - if (status) - error (rpcerr); - if (ptrace_out.status == -1) - { - return 0; /* No bytes moved */ - } - return len; /* Moved *all* the bytes */ -} - -void -vx_files_info () -{ - printf ("\tAttached to host `%s'", vx_host); - printf (", which has %sfloating point", target_has_fp? "": "no "); - printf (".\n"); -} - -void -vx_run_files_info () -{ - printf ("\tRunning VxWorks process 0x%x, function `%s'.\n", - inferior_pid, vx_running); -} - -void -vx_resume (step, siggnal) - int step; - int siggnal; -{ - int status; - Rptrace ptrace_in; - Ptrace_return ptrace_out; - - if (siggnal != 0) - error ("Cannot send signals to VxWorks processes"); - - bzero ((char *) &ptrace_in, sizeof (ptrace_in)); - bzero ((char *) &ptrace_out, sizeof (ptrace_out)); - - ptrace_in.pid = inferior_pid; - ptrace_in.addr = 1; /* Target side insists on this, or it panics. */ - - /* XXX change second param to be a proc number */ - status = net_ptrace_clnt_call (step? PTRACE_SINGLESTEP: PTRACE_CONT, - &ptrace_in, &ptrace_out); - if (status) - error (rpcerr); - if (ptrace_out.status == -1) - { - errno = ptrace_out.errno; - perror_with_name ("Resuming remote process"); - } -} - -void -vx_mourn_inferior () -{ - pop_target (); /* Pop back to no-child state */ - generic_mourn_inferior (); -} - - -/* This function allows the addition of incrementally linked object files. */ - -void -vx_add_file_command (arg_string, from_tty) - char* arg_string; - int from_tty; -{ - CORE_ADDR text_addr; - CORE_ADDR data_addr; - CORE_ADDR bss_addr; - - if (arg_string == 0) - error ("add-file takes a file name in VxWorks"); - - arg_string = tilde_expand (arg_string); - make_cleanup (free, arg_string); - - dont_repeat (); - - if (net_load (arg_string, &text_addr, &data_addr, &bss_addr) == -1) - error ("Load failed on target machine"); - - /* FIXME, for now we ignore data_addr and bss_addr. */ - symbol_file_add (arg_string, from_tty, text_addr, 0); -} - -#ifdef FIXME /* Not ready for prime time */ -/* Single step the target program at the source or machine level. - Takes an error exit if rpc fails. - Returns -1 if remote single-step operation fails, else 0. */ - -static int -net_step () -{ - enum clnt_stat status; - int step_status; - SOURCE_STEP source_step; - - source_step.taskId = inferior_pid; - - if (step_range_end) - { - source_step.startAddr = step_range_start; - source_step.endAddr = step_range_end; - } - else - { - source_step.startAddr = 0; - source_step.endAddr = 0; - } - - status = net_clnt_call (VX_SOURCE_STEP, xdr_SOURCE_STEP, &source_step, - xdr_int, &step_status); - - if (status == RPC_SUCCESS) - return step_status; - else - error (rpcerr); -} -#endif - -/* Emulate ptrace using RPC calls to the VxWorks target system. - Returns nonzero (-1) if RPC status to VxWorks is bad, 0 otherwise. */ - -static int -net_ptrace_clnt_call (request, pPtraceIn, pPtraceOut) - enum ptracereq request; - Rptrace *pPtraceIn; - Ptrace_return *pPtraceOut; -{ - enum clnt_stat status; - - status = net_clnt_call (request, xdr_rptrace, pPtraceIn, xdr_ptrace_return, - pPtraceOut); - - if (status != RPC_SUCCESS) - return -1; - - return 0; -} - -/* Query the target for the name of the file from which VxWorks was - booted. pBootFile is the address of a pointer to the buffer to - receive the file name; if the pointer pointed to by pBootFile is - NULL, memory for the buffer will be allocated by XDR. - Returns -1 if rpc failed, 0 otherwise. */ - -int -net_get_boot_file (pBootFile) - char **pBootFile; -{ - enum clnt_stat status; - - status = net_clnt_call (VX_BOOT_FILE_INQ, xdr_void, (char *) 0, - xdr_wrapstring, pBootFile); - return (status == RPC_SUCCESS) ? 0 : -1; -} - -/* Fetch a list of loaded object modules from the VxWorks target. - Returns -1 if rpc failed, 0 otherwise - There's no way to check if the returned loadTable is correct. - VxWorks doesn't check it. */ - -int -net_get_symbols (pLoadTable) - ldtabl *pLoadTable; /* return pointer to ldtabl here */ -{ - enum clnt_stat status; - - bzero ((char *) pLoadTable, sizeof (struct ldtabl)); - - status = net_clnt_call (VX_STATE_INQ, xdr_void, 0, xdr_ldtabl, pLoadTable); - return (status == RPC_SUCCESS) ? 0 : -1; -} - -/* Look up a symbol in the VxWorks target's symbol table. - Returns status of symbol read on target side (0=success, -1=fail) - Returns -1 and complain()s if rpc fails. */ - -struct complaint cant_contact_target = - {"Lost contact with VxWorks target", 0, 0}; - -int -vx_lookup_symbol (name, pAddr) - char *name; /* symbol name */ - CORE_ADDR *pAddr; -{ - enum clnt_stat status; - SYMBOL_ADDR symbolAddr; - - *pAddr = 0; - bzero ((char *) &symbolAddr, sizeof (symbolAddr)); - - status = net_clnt_call (VX_SYMBOL_INQ, xdr_wrapstring, &name, - xdr_SYMBOL_ADDR, &symbolAddr); - if (status != RPC_SUCCESS) { - complain (&cant_contact_target, 0); - return -1; - } - - *pAddr = symbolAddr.addr; - return symbolAddr.status; -} - -/* Check to see if the VxWorks target has a floating point coprocessor. - Returns 1 if target has floating point processor, 0 otherwise. - Calls error() if rpc fails. */ - -int -net_check_for_fp () -{ - enum clnt_stat status; - bool_t fp = 0; /* true if fp processor is present on target board */ - - status = net_clnt_call (VX_FP_INQUIRE, xdr_void, 0, xdr_bool, &fp); - if (status != RPC_SUCCESS) - error (rpcerr); - - return (int) fp; -} - -/* Establish an RPC connection with the VxWorks target system. - Calls error () if unable to establish connection. */ - -void -net_connect (host) - char *host; -{ - struct sockaddr_in destAddr; - struct hostent *destHost; - - /* get the internet address for the given host */ - - if ((destHost = (struct hostent *) gethostbyname (host)) == NULL) - error ("Invalid hostname. Couldn't attach remote target."); - - bzero (&destAddr, sizeof (destAddr)); - - destAddr.sin_addr.s_addr = * (u_long *) destHost->h_addr; - destAddr.sin_family = AF_INET; - destAddr.sin_port = 0; /* set to actual port that remote - ptrace is listening on. */ - - /* Create a tcp client transport on which to issue - calls to the remote ptrace server. */ - - ptraceSock = RPC_ANYSOCK; - pClient = clnttcp_create (&destAddr, RDBPROG, RDBVERS, &ptraceSock, 0, 0); - /* FIXME, here is where we deal with different version numbers of the proto */ - - if (pClient == NULL) - { - clnt_pcreateerror ("\tnet_connect"); - error ("Couldn't connect to remote target."); - } -} - -/* Sleep for the specified number of milliseconds - * (assumed to be less than 1000). - * If select () is interrupted, returns immediately; - * takes an error exit if select () fails for some other reason. - */ - -static void -sleep_ms (ms) - long ms; -{ - struct timeval select_timeout; - int status; - - select_timeout.tv_sec = 0; - select_timeout.tv_usec = ms * 1000; - - status = select (0, (fd_set *) 0, (fd_set *) 0, (fd_set *) 0, &select_timeout); - - if (status < 0 && errno != EINTR) - perror_with_name ("select"); -} - -/* Wait for control to return from inferior to debugger. - If inferior gets a signal, we may decide to start it up again - instead of returning. That is why there is a loop in this function. - When this function actually returns it means the inferior - should be left stopped and GDB should read more commands. */ - -/* For network debugging with VxWorks. - * VxWorks knows when tasks hit breakpoints, receive signals, exit, etc, - * so vx_wait() receives this information directly from - * VxWorks instead of trying to figure out what happenned via a wait() call. - */ - -static int -vx_wait (status) - int *status; -{ - register int pid; - WAITTYPE w; - RDB_EVENT rdbEvent; - int quit_failed; - - do - { - /* If CTRL-C is hit during this loop, - suspend the inferior process. */ - - quit_failed = 0; - if (quit_flag) - { - quit_failed = (net_quit () == -1); - quit_flag = 0; - } - - /* If a net_quit () or net_wait () call has failed, - allow the user to break the connection with the target. - We can't simply error () out of this loop, since the - data structures representing the state of the inferior - are in an inconsistent state. */ - - if (quit_failed || net_wait (&rdbEvent) == -1) - { - terminal_ours (); - if (query ("Can't %s. Disconnect from target system? ", - (quit_failed) ? "suspend remote task" - : "get status of remote task")) - { - target_mourn_inferior(); - error ("Use the \"target\" command to reconnect."); - } - else - { - terminal_inferior (); - continue; - } - } - - - if (quit_failed || net_wait (&rdbEvent) == -1) - { - error ("Wait on remote target failed"); - } - - pid = rdbEvent.taskId; - if (pid == 0) - { - sleep_ms (200); /* FIXME Don't kill the network too badly */ - } - else if (pid != inferior_pid) - fatal ("Bad pid for debugged task: 0x%x\n", pid); - } while (pid == 0); - - /* FIXME, eventually do more then SIGTRAP on everything... */ - switch (rdbEvent.eventType) - { - case EVENT_EXIT: - WSETEXIT (w, 0); - /* FIXME is it possible to distinguish between a - XXX normal vs abnormal exit in VxWorks? */ - break; - - case EVENT_START: - WSETSTOP (w, SIGTRAP); - break; - - case EVENT_STOP: - WSETSTOP (w, SIGTRAP); - /* XXX was it stopped by a signal? act accordingly */ - break; - - case EVENT_BREAK: - /* Expecting a trace trap. Stop the inferior and - * return silently when it happens. */ - WSETSTOP (w, SIGTRAP); - break; - - case EVENT_SUSPEND: - target_terminal_ours_for_output (); - printf ("\nRemote task suspended\n"); /* FIXME */ - fflush (stdout); - WSETSTOP (w, SIGTRAP); - break; - - case EVENT_SIGNAL: - /* The target is not running Unix, and its - faults/traces do not map nicely into Unix signals. - Make sure they do not get confused with Unix signals - by numbering them with values higher than the highest - legal Unix signal. code in the arch-dependent PRINT_RANDOM_SIGNAL - routine will interpret the value for wait_for_inferior. */ - WSETSTOP (w, rdbEvent.sigType + NSIG); - break; - } /* switch */ - *status = *(int *)&w; /* Grumble union wait crap Grumble */ - return pid; -} - -static int -symbol_stub (arg) - int arg; -{ - char *bootFile = (char *)arg; - symbol_file_command (bootFile, 0); - return 1; -} - -static int -add_symbol_stub (arg) - int arg; -{ - struct ldfile *pLoadFile = (struct ldfile *)arg; - - symbol_file_add (pLoadFile->name, 0, pLoadFile->txt_addr, 0); - return 1; -} -/* Target command for VxWorks target systems. - - Used in vxgdb. Takes the name of a remote target machine - running vxWorks and connects to it to initialize remote network - debugging. */ - -static void -vx_open (args, from_tty) - char *args; - int from_tty; -{ - extern int close (); - char *bootFile; - extern char *source_path; - struct ldtabl loadTable; - struct ldfile *pLoadFile; - int i; - extern CLIENT *pClient; - - if (!args) - error_no_arg ("target machine name"); - - target_preopen (); - - printf ("Attaching remote machine across net...\n"); - fflush (stdout); - - /* Allow the user to kill the connect attempt by typing ^C. - Wait until the call to target_has_fp () completes before - disallowing an immediate quit, since even if net_connect () - is successful, the remote debug server might be hung. */ - - immediate_quit++; - - net_connect (args); - target_has_fp = net_check_for_fp (); - printf_filtered ("Connected to %s\n", args); - - immediate_quit--; - - push_target (&vx_ops); - - /* Save a copy of the target host's name. */ - if (vx_host) - free (vx_host); - vx_host = savestring (args, strlen (args)); - - /* Find out the name of the file from which the target was booted - and load its symbol table. */ - - bootFile = NULL; - if (!net_get_boot_file (&bootFile)) - { - if (*bootFile) { - printf_filtered ("%s: ", bootFile); - if (catch_errors (symbol_stub, (int)bootFile, - "Error reading symbols from boot file")) - puts_filtered ("ok\n"); - } else if (from_tty) - printf ("VxWorks kernel symbols not loaded.\n"); - } - else - error ("Can't retrieve boot file name from target machine."); - - clnt_freeres (pClient, xdr_wrapstring, &bootFile); - - if (net_get_symbols (&loadTable) != 0) - error ("Can't read loaded modules from target machine"); - - i = 0-1; - while (++i < loadTable.tbl_size) - { - QUIT; /* FIXME, avoids clnt_freeres below: mem leak */ - pLoadFile = &loadTable.tbl_ent [i]; -#ifdef WRS_ORIG - { - register int desc; - struct cleanup *old_chain; - char *fullname = NULL; - - desc = openp (source_path, 0, pLoadFile->name, O_RDONLY, 0, &fullname); - if (desc < 0) - perror_with_name (pLoadFile->name); - old_chain = make_cleanup (close, desc); - add_file_at_addr (fullname, desc, pLoadFile->txt_addr, pLoadFile->data_addr, - pLoadFile->bss_addr); - do_cleanups (old_chain); - } -#else - /* Botches, FIXME: - (1) Searches the PATH, not the source path. - (2) data and bss are assumed to be at the usual offsets from text. */ - catch_errors (add_symbol_stub, (int)pLoadFile, - "Error in reading symbols from loaded module."); -#endif - } - - clnt_freeres (pClient, xdr_ldtabl, &loadTable); - - if (from_tty) - { - puts_filtered ("Success!\n"); - } -} - -/* Cross-net conversion of floats to and from extended form. - (This is needed because different target machines have different - extended floating point formats.) */ - -/* Convert from an extended float to a double. - - The extended float is stored as raw data pointed to by FROM. - Return the converted value as raw data in the double pointed to by TO. -*/ - -static void -vx_convert_to_virtual (regno, from, to) - int regno; - char *from; - char *to; -{ - enum clnt_stat status; - ext_fp from_ext_fp; - double to_double; - - if (REGISTER_CONVERTIBLE (regno)) - { - if (!target_has_fp) { - *(double *)to = 0.0; /* Skip the trouble if no float anyway */ - return; - } - bcopy (from, (char *) &from_ext_fp, sizeof (from_ext_fp)); - bzero ((char *) &to_double, sizeof (to_double)); - - status = net_clnt_call (VX_CONV_FROM_68881, xdr_ext_fp, &from_ext_fp, - xdr_double, &to_double); - if (status == RPC_SUCCESS) - bcopy ((char *) &to_double, to, sizeof (to_double)); - else - error (rpcerr); - } - else - bcopy (from, to, REGISTER_VIRTUAL_SIZE (regno)); -} - - -/* The converse: convert from a double to an extended float. - - The double is stored as raw data pointed to by FROM. - Return the converted value as raw data in the extended - float pointed to by TO. -*/ - -static void -vx_convert_from_virtual (regno, from, to) - int regno; - char *from; - char *to; -{ - enum clnt_stat status; - ext_fp to_ext_fp; - double from_double; - - if (REGISTER_CONVERTIBLE (regno)) - { - if (!target_has_fp) { - bzero (to, REGISTER_RAW_SIZE (FP0_REGNUM)); /* Shrug */ - return; - } - bcopy (from, (char *) &from_double, sizeof (from_double)); - bzero ((char *) &to_ext_fp, sizeof (to_ext_fp)); - - status = net_clnt_call (VX_CONV_TO_68881, xdr_double, &from_double, - xdr_ext_fp, &to_ext_fp); - if (status == RPC_SUCCESS) - bcopy ((char *) &to_ext_fp, to, sizeof (to_ext_fp)); - else - error (rpcerr); - } - else - bcopy (from, to, REGISTER_VIRTUAL_SIZE (regno)); -} - -/* Make an RPC call to the VxWorks target. - Returns RPC status. */ - -static enum clnt_stat -net_clnt_call (procNum, inProc, in, outProc, out) - enum ptracereq procNum; - xdrproc_t inProc; - char *in; - xdrproc_t outProc; - char *out; -{ - enum clnt_stat status; - - status = clnt_call (pClient, procNum, inProc, in, outProc, out, rpcTimeout); - - if (status != RPC_SUCCESS) - clnt_perrno (status); - - return status; -} - -/* A vxprocess target should be started via "run" not "target". */ -/*ARGSUSED*/ -static void -vx_proc_open (name, from_tty) - char *name; - int from_tty; -{ - error ("Use the \"run\" command to start a VxWorks process."); -} - - -/* Target ops structure for accessing memory and such over the net */ - -struct target_ops vx_ops = { - "vxworks", "VxWorks target memory via RPC over TCP/IP", - "Use VxWorks target memory. \n\ -Specify the name of the machine to connect to.", - vx_open, 0, /* vx_detach, */ - 0, 0, /* resume, wait */ - 0, 0, /* read_reg, write_reg */ - 0, vx_convert_to_virtual, vx_convert_from_virtual, /* prep_to_store, */ - vx_xfer_memory, vx_files_info, - 0, 0, /* insert_breakpoint, remove_breakpoint */ - 0, 0, 0, 0, 0, /* terminal stuff */ - 0, /* vx_kill, */ - vx_add_file_command, - vx_lookup_symbol, - vx_create_inferior, 0, /* mourn_inferior */ - core_stratum, 0, /* next */ - 1, 1, 0, 0, 0, /* all mem, mem, stack, regs, exec */ - OPS_MAGIC, /* Always the last thing */ -}; - -/* Target ops structure for accessing VxWorks child processes over the net */ - -struct target_ops vx_run_ops = { - "vxprocess", "VxWorks process", - "VxWorks process, started by the \"run\" command.", - vx_proc_open, 0, /* vx_detach, */ - vx_resume, vx_wait, - vx_read_register, vx_write_register, - vx_prepare_to_store, vx_convert_to_virtual, vx_convert_from_virtual, - vx_xfer_memory, vx_run_files_info, - vx_insert_breakpoint, vx_remove_breakpoint, - 0, 0, 0, 0, 0, /* terminal stuff */ - 0, /* vx_kill, */ - vx_add_file_command, - vx_lookup_symbol, - vx_create_inferior, vx_mourn_inferior, - process_stratum, 0, /* next */ - 1, 1, 1, 1, 1, /* all mem, mem, stack, regs, exec */ - OPS_MAGIC, /* Always the last thing */ -}; -/* ==> Remember when reading at end of file, there are two "ops" structs here. */ - -void -_initialize_vx () -{ - add_target (&vx_ops); - add_target (&vx_run_ops); -} |