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. */
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#include "defs.h"
#include "frame.h"
#include "objfiles.h"
#include "gdb-stabs.h"
-#include <string.h>
+#include "gdb_string.h"
#include <errno.h>
#include <signal.h>
#include <fcntl.h>
#include <symtab.h>
+/* Maximum number of bytes to transfer in a single
+ PTRACE_{READ,WRITE}DATA request. */
+#define VX_MEMXFER_MAX 4096
+
+extern void vx_read_register ();
+extern void vx_write_register ();
extern void symbol_file_command ();
extern int stop_soon_quietly; /* for wait_for_inferior */
+static int net_step ();
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 */
/* Nonzero means target that is being debugged remotely has a floating
point processor. */
-static int target_has_fp;
+int target_has_fp;
/* Default error message when the network is forking up. */
status = net_clnt_call (PROCESS_WAIT, xdr_int, &pid, xdr_RDB_EVENT,
pEvent);
- return (status == RPC_SUCCESS)? pEvent->status: -1;
+ /* return (status == RPC_SUCCESS)? pEvent->status: -1; */
+ if (status == RPC_SUCCESS)
+ return ((pEvent->status) ? 1 : 0);
+ else if (status == RPC_TIMEDOUT)
+ return (1);
+ else
+ return (-1);
}
/* Suspend the remote task.
/* Read a register or registers from the remote system. */
-static void
-vx_read_register (regno)
- int regno;
+void
+net_read_registers (reg_buf, len, procnum)
+ char *reg_buf;
+ int len;
+ u_long procnum;
{
int status;
Rptrace ptrace_in;
Ptrace_return ptrace_out;
- C_bytes in_data;
C_bytes out_data;
- extern char registers[];
+ char message[100];
memset ((char *) &ptrace_in, '\0', sizeof (ptrace_in));
memset ((char *) &ptrace_out, '\0', sizeof (ptrace_out));
- /* FIXME, eventually only get the ones we need. */
- registers_fetched ();
-
+ /* Initialize RPC input argument structure. */
+
ptrace_in.pid = inferior_pid;
+ ptrace_in.info.ttype = NOINFO;
+
+ /* Initialize RPC return value structure. */
+
+ out_data.bytes = reg_buf;
+ out_data.len = len;
ptrace_out.info.more_data = (caddr_t) &out_data;
- out_data.len = VX_NUM_REGS * REGISTER_RAW_SIZE (0);
- out_data.bytes = (caddr_t) registers;
-
- status = net_ptrace_clnt_call (PTRACE_GETREGS, &ptrace_in, &ptrace_out);
+
+ /* Call RPC; take an error exit if appropriate. */
+
+ status = net_ptrace_clnt_call (procnum, &ptrace_in, &ptrace_out);
if (status)
error (rpcerr);
if (ptrace_out.status == -1)
{
errno = ptrace_out.errno;
- perror_with_name ("net_ptrace_clnt_call(PTRACE_GETREGS)");
- }
-
-#ifdef VX_SIZE_FPREGS
- /* If the target has floating point registers, fetch them.
- Otherwise, zero the floating point register values in
- registers[] for good measure, even though we might not
- need to. */
-
- if (target_has_fp)
- {
- ptrace_in.pid = inferior_pid;
- ptrace_out.info.more_data = (caddr_t) &out_data;
- out_data.len = VX_SIZE_FPREGS;
- out_data.bytes = (caddr_t) ®isters[REGISTER_BYTE (FP0_REGNUM)];
-
- status = net_ptrace_clnt_call (PTRACE_GETFPREGS, &ptrace_in, &ptrace_out);
- if (status)
- error (rpcerr);
- if (ptrace_out.status == -1)
- {
- errno = ptrace_out.errno;
- perror_with_name ("net_ptrace_clnt_call(PTRACE_GETFPREGS)");
- }
- }
- else
- {
- memset (®isters[REGISTER_BYTE (FP0_REGNUM)], '\0', VX_SIZE_FPREGS);
+ sprintf (message, "reading %s registers", (procnum == PTRACE_GETREGS)
+ ? "general-purpose"
+ : "floating-point");
+ perror_with_name (message);
}
-#endif /* VX_SIZE_FPREGS */
-}
-
-/* Prepare to store registers. Since we will store all of them,
- read out their current values now. */
-
-static void
-vx_prepare_to_store ()
-{
- /* Fetch all registers, if any of them are not yet fetched. */
- read_register_bytes (0, NULL, REGISTER_BYTES);
}
+/* Write register values to a VxWorks target. REG_BUF points to a buffer
+ containing the raw register values, LEN is the length of REG_BUF in
+ bytes, and PROCNUM is the RPC procedure number (PTRACE_SETREGS or
+ PTRACE_SETFPREGS). An error exit is taken if the RPC call fails or
+ if an error status is returned by the remote debug server. This is
+ a utility routine used by vx_write_register (). */
-/* 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 */
-
-static void
-vx_write_register (regno)
- int regno;
+void
+net_write_registers (reg_buf, len, procnum)
+ char *reg_buf;
+ int len;
+ u_long procnum;
{
- C_bytes in_data;
- C_bytes out_data;
- extern char registers[];
int status;
Rptrace ptrace_in;
Ptrace_return ptrace_out;
+ C_bytes in_data;
+ char message[100];
memset ((char *) &ptrace_in, '\0', sizeof (ptrace_in));
memset ((char *) &ptrace_out, '\0', sizeof (ptrace_out));
+ /* Initialize RPC input argument structure. */
+
+ in_data.bytes = reg_buf;
+ in_data.len = len;
+
ptrace_in.pid = inferior_pid;
- ptrace_in.info.ttype = DATA;
+ ptrace_in.info.ttype = DATA;
ptrace_in.info.more_data = (caddr_t) &in_data;
- in_data.bytes = registers;
-
- in_data.len = VX_NUM_REGS * REGISTER_SIZE;
+ /* Call RPC; take an error exit if appropriate. */
- /* XXX change second param to be a proc number */
- status = net_ptrace_clnt_call (PTRACE_SETREGS, &ptrace_in, &ptrace_out);
+ status = net_ptrace_clnt_call (procnum, &ptrace_in, &ptrace_out);
if (status)
error (rpcerr);
if (ptrace_out.status == -1)
{
errno = ptrace_out.errno;
- perror_with_name ("net_ptrace_clnt_call(PTRACE_SETREGS)");
+ sprintf (message, "writing %s registers", (procnum == PTRACE_SETREGS)
+ ? "general-purpose"
+ : "floating-point");
+ perror_with_name (message);
}
+}
-#ifdef VX_SIZE_FPREGS
- /* Store floating point registers if the target has them. */
-
- if (target_has_fp)
- {
- ptrace_in.pid = inferior_pid;
- ptrace_in.info.ttype = DATA;
- ptrace_in.info.more_data = (caddr_t) &in_data;
-
-
- in_data.bytes = ®isters[REGISTER_BYTE (FP0_REGNUM)];
- in_data.len = VX_SIZE_FPREGS;
+/* Prepare to store registers. Since we will store all of them,
+ read out their current values now. */
- status = net_ptrace_clnt_call (PTRACE_SETFPREGS, &ptrace_in,
- &ptrace_out);
- if (status)
- error (rpcerr);
- if (ptrace_out.status == -1)
- {
- errno = ptrace_out.errno;
- perror_with_name ("net_ptrace_clnt_call(PTRACE_SETFPREGS)");
- }
- }
-#endif /* VX_SIZE_FPREGS */
+static void
+vx_prepare_to_store ()
+{
+ /* Fetch all registers, if any of them are not yet fetched. */
+ read_register_bytes (0, NULL, REGISTER_BYTES);
}
/* Copy LEN bytes to or from remote inferior's memory starting at MEMADDR
Rptrace ptrace_in;
Ptrace_return ptrace_out;
C_bytes data;
+ enum ptracereq request;
+ int nleft, nxfer;
memset ((char *) &ptrace_in, '\0', sizeof (ptrace_in));
memset ((char *) &ptrace_out, '\0', sizeof (ptrace_out));
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);
+ request = PTRACE_WRITEDATA;
}
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);
+ request = PTRACE_READDATA;
}
+ /* Loop until the entire request has been satisfied, transferring
+ at most VX_MEMXFER_MAX bytes per iteration. Break from the loop
+ if an error status is returned by the remote debug server. */
- if (status)
- error (rpcerr);
- if (ptrace_out.status == -1)
+ nleft = len;
+ status = 0;
+
+ while (nleft > 0 && status == 0)
{
- return 0; /* No bytes moved */
+ nxfer = min (nleft, VX_MEMXFER_MAX);
+
+ ptrace_in.addr = (int) memaddr;
+ ptrace_in.data = nxfer;
+ data.bytes = (caddr_t) myaddr;
+ data.len = nxfer;
+
+ /* Request a block from the remote debug server; if RPC fails,
+ report an error and return to debugger command level. */
+
+ if (net_ptrace_clnt_call (request, &ptrace_in, &ptrace_out))
+ error (rpcerr);
+
+ status = ptrace_out.status;
+ if (status == 0)
+ {
+ memaddr += nxfer;
+ myaddr += nxfer;
+ nleft -= nxfer;
+ }
+ else
+ {
+ /* A target-side error has ocurred. Set errno to the error
+ code chosen by the target so that a later perror () will
+ say something meaningful. */
+
+ errno = ptrace_out.errno;
+ }
}
- return len; /* Moved *all* the bytes */
+
+ /* Return the number of bytes transferred. */
+
+ return (len - nleft);
}
static void
int status;
Rptrace ptrace_in;
Ptrace_return ptrace_out;
+ CORE_ADDR cont_addr;
if (pid == -1)
pid = inferior_pid;
if (siggnal != 0 && siggnal != stop_signal)
error ("Cannot send signals to VxWorks processes");
+ /* Set CONT_ADDR to the address at which we are continuing,
+ or to 1 if we are continuing from where the program stopped.
+ This conforms to traditional ptrace () usage, but at the same
+ time has special meaning for the VxWorks remote debug server.
+ If the address is not 1, the server knows that the target
+ program is jumping to a new address, which requires special
+ handling if there is a breakpoint at the new address. */
+
+ cont_addr = read_register (PC_REGNUM);
+ if (cont_addr == stop_pc)
+ cont_addr = 1;
+
memset ((char *) &ptrace_in, '\0', sizeof (ptrace_in));
memset ((char *) &ptrace_out, '\0', sizeof (ptrace_out));
ptrace_in.pid = pid;
- ptrace_in.addr = 1; /* Target side insists on this, or it panics. */
+ ptrace_in.addr = cont_addr; /* Target side insists on this, or it panics. */
+
+ if (step)
+ status = net_step();
+ else
+ status = net_ptrace_clnt_call (PTRACE_CONT, &ptrace_in, &ptrace_out);
- /* 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)
ANOFFSET (offs, SECT_OFF_DATA) = data_addr - ss.data_start;
ANOFFSET (offs, SECT_OFF_BSS) = bss_addr - ss.bss_start;
objfile_relocate (objfile, offs);
-
- /* Need to do this *after* things are relocated. */
- breakpoint_re_set ();
}
/* This function allows the addition of incrementally linked object files. */
dont_repeat ();
+ /* Refuse to load the module if a debugged task is running. Doing so
+ can have a number of unpleasant consequences to the running task. */
+
+ if (inferior_pid != 0 && target_has_execution)
+ {
+ if (query ("You may not load a module while the target task is running.\n\
+Kill the target task? "))
+ target_kill ();
+ else
+ error ("Load cancelled.");
+ }
+
QUIT;
immediate_quit++;
if (net_load (arg_string, &text_addr, &data_addr, &bss_addr) == -1)
reinit_frame_cache ();
}
-#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. */
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. */
}
/* It worked... */
- push_target (&vx_run_ops);
- /* The unsigned long pid will get turned into a signed int here,
- but it doesn't seem to matter. inferior_pid must be signed
- in order for other parts of GDB to work correctly. */
+
inferior_pid = pid;
+ push_target (&vx_run_ops);
+
+ if (vx_running)
+ free (vx_running);
vx_running = 0;
}
-
/* detach_command --
takes a program previously attached to and detaches it.
The program resumes execution and will no longer stop
/* 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\
+struct target_ops vx_ops ;
+
+static void init_vx_ops(void)
+{
+ vx_ops.to_shortname = "vxworks";
+ vx_ops.to_longname = "VxWorks target memory via RPC over TCP/IP";
+ vx_ops.to_doc = "Use VxWorks target memory. \n\
Specify the name of the machine to connect to.",
- vx_open, vx_close, vx_attach, 0, /* vx_detach, */
- 0, 0, /* resume, wait */
- 0, 0, /* read_reg, write_reg */
- 0, /* 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_load_command,
- vx_lookup_symbol,
- vx_create_inferior, 0, /* mourn_inferior */
- 0, /* can_run */
- 0, /* notice_signals */
- 0, /* to_stop */
- core_stratum, 0, /* next */
- 1, 1, 0, 0, 0, /* all mem, mem, stack, regs, exec */
- 0, 0, /* Section pointers */
- OPS_MAGIC, /* Always the last thing */
+ vx_ops.to_open = vx_open;
+ vx_ops.to_close = vx_close;
+ vx_ops.to_attach = vx_attach;
+ vx_ops.to_detach = 0; /* vx_detach, */
+ vx_ops.to_resume = 0;
+ vx_ops.to_wait = 0; /* resume, wait */
+ vx_ops.to_fetch_registers = 0;
+ vx_ops.to_store_registers = 0; /* read_reg, write_reg */
+ vx_ops.to_prepare_to_store = 0; /* prep_to_store, */
+ vx_ops.to_xfer_memory = vx_xfer_memory;
+ vx_ops.to_files_info = vx_files_info;
+ vx_ops.to_insert_breakpoint = 0;
+ vx_ops.to_remove_breakpoint = 0; /* insert_breakpoint, remove_breakpoint */
+ vx_ops.to_terminal_init = 0;
+ vx_ops.to_terminal_inferior = 0;
+ vx_ops.to_terminal_ours_for_output = 0;
+ vx_ops.to_terminal_ours = 0;
+ vx_ops.to_terminal_info = 0; /* terminal stuff */
+ vx_ops.to_kill = 0; /* vx_kill, */
+ vx_ops.to_load = vx_load_command;
+ vx_ops.to_lookup_symbol = vx_lookup_symbol;
+ vx_ops.to_create_inferior = vx_create_inferior;
+ vx_ops.to_mourn_inferior = 0; /* mourn_inferior */
+ vx_ops.to_can_run = 0; /* can_run */
+ vx_ops.to_notice_signals = 0; /* notice_signals */
+ vx_ops.to_thread_alive = 0; /* thread_alive */
+ vx_ops.to_stop = 0; /* to_stop */
+ vx_ops.to_stratum = core_stratum;
+ vx_ops.DONT_USE = 0; /* next */
+ vx_ops.to_has_all_memory = 1;
+ vx_ops.to_has_memory = 1;
+ vx_ops.to_has_stack = 0;
+ vx_ops.to_has_registers = 0;
+ vx_ops.to_has_execution = 0; /* all mem, mem, stack, regs, exec */
+ vx_ops.to_sections = 0;
+ vx_ops.to_sections_end = 0;
+ vx_ops.to_magic = 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, vx_proc_close, 0, vx_detach, /* vx_attach */
- vx_resume, vx_wait,
- vx_read_register, vx_write_register,
- vx_prepare_to_store,
- vx_xfer_memory, vx_run_files_info,
- vx_insert_breakpoint, vx_remove_breakpoint,
- 0, 0, 0, 0, 0, /* terminal stuff */
- vx_kill,
- vx_load_command,
- vx_lookup_symbol,
- 0, vx_mourn_inferior,
- 0, /* can_run */
- 0, /* notice_signals */
- 0, /* to_stop */
- process_stratum, 0, /* next */
- 0, /* all_mem--off to avoid spurious msg in "i files" */
- 1, 1, 1, 1, /* mem, stack, regs, exec */
- 0, 0, /* Section pointers */
- OPS_MAGIC, /* Always the last thing */
-};
+struct target_ops vx_run_ops ;
+
+static void init_vx_run_ops(void)
+{
+ vx_run_ops.to_shortname = "vxprocess";
+ vx_run_ops.to_longname = "VxWorks process";
+ vx_run_ops.to_doc = "VxWorks process; started by the \"run\" command.",
+ vx_run_ops.to_open = vx_proc_open;
+ vx_run_ops.to_close = vx_proc_close;
+ vx_run_ops.to_attach = 0;
+ vx_run_ops.to_detach = vx_detach;
+ vx_run_ops.to_resume = vx_resume;
+ vx_run_ops.to_wait = vx_wait;
+ vx_run_ops.to_fetch_registers = vx_read_register;
+ vx_run_ops.to_store_registers = vx_write_register;
+ vx_run_ops.to_prepare_to_store = vx_prepare_to_store;
+ vx_run_ops.to_xfer_memory = vx_xfer_memory;
+ vx_run_ops.to_files_info = vx_run_files_info;
+ vx_run_ops.to_insert_breakpoint = vx_insert_breakpoint;
+ vx_run_ops.to_remove_breakpoint = vx_remove_breakpoint;
+ vx_run_ops.to_terminal_init = 0;
+ vx_run_ops.to_terminal_inferior = 0;
+ vx_run_ops.to_terminal_ours_for_output = 0;
+ vx_run_ops.to_terminal_ours = 0;
+ vx_run_ops.to_terminal_info = 0;
+ vx_run_ops.to_kill = vx_kill;
+ vx_run_ops.to_load = vx_load_command;
+ vx_run_ops.to_lookup_symbol = vx_lookup_symbol;
+ vx_run_ops.to_create_inferior = 0;
+ vx_run_ops.to_mourn_inferior = vx_mourn_inferior ;
+ vx_run_ops.to_can_run = 0;
+ vx_run_ops.to_notice_signals = 0;
+ vx_run_ops.to_thread_alive = 0;
+ vx_run_ops.to_stop = 0;
+ vx_run_ops.to_stratum = process_stratum;
+ vx_run_ops.DONT_USE = 0;
+ vx_run_ops.to_has_all_memory = 0;
+ vx_run_ops.to_has_memory = 1;
+ vx_run_ops.to_has_stack = 1;
+ vx_run_ops.to_has_registers = 1;
+ vx_run_ops.to_has_execution = 1;
+ vx_run_ops.to_sections = 0;
+ vx_run_ops.to_sections_end = 0;
+ vx_run_ops.to_magic = OPS_MAGIC;
+}
/* ==> Remember when reading at end of file, there are two "ops" structs here. */
\f
void
_initialize_vx ()
{
+ init_vx_ops() ;
+ init_vx_run_ops() ;
add_show_from_set
(add_set_cmd ("vxworks-timeout", class_support, var_uinteger,
(char *) &rpcTimeout.tv_sec,
projects / deliverable / binutils-gdb.git / blobdiff