diff options
Diffstat (limited to 'gdb/target.c')
| -rw-r--r-- | gdb/target.c | 2511 |
1 files changed, 0 insertions, 2511 deletions
diff --git a/gdb/target.c b/gdb/target.c deleted file mode 100644 index 75d022f..0000000 --- a/gdb/target.c +++ /dev/null @@ -1,2511 +0,0 @@ -/* Select target systems and architectures at runtime for GDB. - Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, - 2000, 2001, 2002 - Free Software Foundation, Inc. - Contributed by 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., 59 Temple Place - Suite 330, - Boston, MA 02111-1307, USA. */ - -#include "defs.h" -#include <errno.h> -#include "gdb_string.h" -#include "target.h" -#include "gdbcmd.h" -#include "symtab.h" -#include "inferior.h" -#include "bfd.h" -#include "symfile.h" -#include "objfiles.h" -#include "gdb_wait.h" -#include "dcache.h" -#include <signal.h> -#include "regcache.h" - -extern int errno; - -static void target_info (char *, int); - -static void cleanup_target (struct target_ops *); - -static void maybe_kill_then_create_inferior (char *, char *, char **); - -static void default_clone_and_follow_inferior (int, int *); - -static void maybe_kill_then_attach (char *, int); - -static void kill_or_be_killed (int); - -static void default_terminal_info (char *, int); - -static int default_region_size_ok_for_hw_watchpoint (int); - -static int nosymbol (char *, CORE_ADDR *); - -static void tcomplain (void); - -static int nomemory (CORE_ADDR, char *, int, int, struct target_ops *); - -static int return_zero (void); - -static int return_one (void); - -static int return_minus_one (void); - -void target_ignore (void); - -static void target_command (char *, int); - -static struct target_ops *find_default_run_target (char *); - -static void update_current_target (void); - -static void nosupport_runtime (void); - -static void normal_target_post_startup_inferior (ptid_t ptid); - -/* Transfer LEN bytes between target address MEMADDR and GDB address - MYADDR. Returns 0 for success, errno code for failure (which - includes partial transfers -- if you want a more useful response to - partial transfers, try either target_read_memory_partial or - target_write_memory_partial). */ - -static int -target_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len, int write); - -static void init_dummy_target (void); - -static void debug_to_open (char *, int); - -static void debug_to_close (int); - -static void debug_to_attach (char *, int); - -static void debug_to_detach (char *, int); - -static void debug_to_resume (ptid_t, int, enum target_signal); - -static ptid_t debug_to_wait (ptid_t, struct target_waitstatus *); - -static void debug_to_fetch_registers (int); - -static void debug_to_store_registers (int); - -static void debug_to_prepare_to_store (void); - -static int debug_to_xfer_memory (CORE_ADDR, char *, int, int, - struct mem_attrib *, struct target_ops *); - -static void debug_to_files_info (struct target_ops *); - -static int debug_to_insert_breakpoint (CORE_ADDR, char *); - -static int debug_to_remove_breakpoint (CORE_ADDR, char *); - -static int debug_to_can_use_hw_breakpoint (int, int, int); - -static int debug_to_insert_hw_breakpoint (CORE_ADDR, char *); - -static int debug_to_remove_hw_breakpoint (CORE_ADDR, char *); - -static int debug_to_insert_watchpoint (CORE_ADDR, int, int); - -static int debug_to_remove_watchpoint (CORE_ADDR, int, int); - -static int debug_to_stopped_by_watchpoint (void); - -static CORE_ADDR debug_to_stopped_data_address (void); - -static int debug_to_region_size_ok_for_hw_watchpoint (int); - -static void debug_to_terminal_init (void); - -static void debug_to_terminal_inferior (void); - -static void debug_to_terminal_ours_for_output (void); - -static void debug_to_terminal_save_ours (void); - -static void debug_to_terminal_ours (void); - -static void debug_to_terminal_info (char *, int); - -static void debug_to_kill (void); - -static void debug_to_load (char *, int); - -static int debug_to_lookup_symbol (char *, CORE_ADDR *); - -static void debug_to_create_inferior (char *, char *, char **); - -static void debug_to_mourn_inferior (void); - -static int debug_to_can_run (void); - -static void debug_to_notice_signals (ptid_t); - -static int debug_to_thread_alive (ptid_t); - -static void debug_to_stop (void); - -static int debug_to_query (int /*char */ , char *, char *, int *); - -/* Pointer to array of target architecture structures; the size of the - array; the current index into the array; the allocated size of the - array. */ -struct target_ops **target_structs; -unsigned target_struct_size; -unsigned target_struct_index; -unsigned target_struct_allocsize; -#define DEFAULT_ALLOCSIZE 10 - -/* The initial current target, so that there is always a semi-valid - current target. */ - -static struct target_ops dummy_target; - -/* Top of target stack. */ - -struct target_stack_item *target_stack; - -/* The target structure we are currently using to talk to a process - or file or whatever "inferior" we have. */ - -struct target_ops current_target; - -/* Command list for target. */ - -static struct cmd_list_element *targetlist = NULL; - -/* Nonzero if we are debugging an attached outside process - rather than an inferior. */ - -int attach_flag; - -/* Non-zero if we want to see trace of target level stuff. */ - -static int targetdebug = 0; - -static void setup_target_debug (void); - -DCACHE *target_dcache; - -/* The user just typed 'target' without the name of a target. */ - -/* ARGSUSED */ -static void -target_command (char *arg, int from_tty) -{ - fputs_filtered ("Argument required (target name). Try `help target'\n", - gdb_stdout); -} - -/* Add a possible target architecture to the list. */ - -void -add_target (struct target_ops *t) -{ - if (!target_structs) - { - target_struct_allocsize = DEFAULT_ALLOCSIZE; - target_structs = (struct target_ops **) xmalloc - (target_struct_allocsize * sizeof (*target_structs)); - } - if (target_struct_size >= target_struct_allocsize) - { - target_struct_allocsize *= 2; - target_structs = (struct target_ops **) - xrealloc ((char *) target_structs, - target_struct_allocsize * sizeof (*target_structs)); - } - target_structs[target_struct_size++] = t; -/* cleanup_target (t); */ - - if (targetlist == NULL) - add_prefix_cmd ("target", class_run, target_command, - "Connect to a target machine or process.\n\ -The first argument is the type or protocol of the target machine.\n\ -Remaining arguments are interpreted by the target protocol. For more\n\ -information on the arguments for a particular protocol, type\n\ -`help target ' followed by the protocol name.", - &targetlist, "target ", 0, &cmdlist); - add_cmd (t->to_shortname, no_class, t->to_open, t->to_doc, &targetlist); -} - -/* Stub functions */ - -void -target_ignore (void) -{ -} - -void -target_load (char *arg, int from_tty) -{ - dcache_invalidate (target_dcache); - (*current_target.to_load) (arg, from_tty); -} - -/* ARGSUSED */ -static int -nomemory (CORE_ADDR memaddr, char *myaddr, int len, int write, - struct target_ops *t) -{ - errno = EIO; /* Can't read/write this location */ - return 0; /* No bytes handled */ -} - -static void -tcomplain (void) -{ - error ("You can't do that when your target is `%s'", - current_target.to_shortname); -} - -void -noprocess (void) -{ - error ("You can't do that without a process to debug."); -} - -/* ARGSUSED */ -static int -nosymbol (char *name, CORE_ADDR *addrp) -{ - return 1; /* Symbol does not exist in target env */ -} - -/* ARGSUSED */ -static void -nosupport_runtime (void) -{ - if (ptid_equal (inferior_ptid, null_ptid)) - noprocess (); - else - error ("No run-time support for this"); -} - - -/* ARGSUSED */ -static void -default_terminal_info (char *args, int from_tty) -{ - printf_unfiltered ("No saved terminal information.\n"); -} - -/* This is the default target_create_inferior and target_attach function. - If the current target is executing, it asks whether to kill it off. - If this function returns without calling error(), it has killed off - the target, and the operation should be attempted. */ - -static void -kill_or_be_killed (int from_tty) -{ - if (target_has_execution) - { - printf_unfiltered ("You are already running a program:\n"); - target_files_info (); - if (query ("Kill it? ")) - { - target_kill (); - if (target_has_execution) - error ("Killing the program did not help."); - return; - } - else - { - error ("Program not killed."); - } - } - tcomplain (); -} - -static void -maybe_kill_then_attach (char *args, int from_tty) -{ - kill_or_be_killed (from_tty); - target_attach (args, from_tty); -} - -static void -maybe_kill_then_create_inferior (char *exec, char *args, char **env) -{ - kill_or_be_killed (0); - target_create_inferior (exec, args, env); -} - -static void -default_clone_and_follow_inferior (int child_pid, int *followed_child) -{ - target_clone_and_follow_inferior (child_pid, followed_child); -} - -/* Clean up a target struct so it no longer has any zero pointers in it. - We default entries, at least to stubs that print error messages. */ - -static void -cleanup_target (struct target_ops *t) -{ - -#define de_fault(field, value) \ - if (!t->field) \ - t->field = value - - de_fault (to_open, - (void (*) (char *, int)) - tcomplain); - de_fault (to_close, - (void (*) (int)) - target_ignore); - de_fault (to_attach, - maybe_kill_then_attach); - de_fault (to_post_attach, - (void (*) (int)) - target_ignore); - de_fault (to_require_attach, - maybe_kill_then_attach); - de_fault (to_detach, - (void (*) (char *, int)) - target_ignore); - de_fault (to_require_detach, - (void (*) (int, char *, int)) - target_ignore); - de_fault (to_resume, - (void (*) (ptid_t, int, enum target_signal)) - noprocess); - de_fault (to_wait, - (ptid_t (*) (ptid_t, struct target_waitstatus *)) - noprocess); - de_fault (to_post_wait, - (void (*) (ptid_t, int)) - target_ignore); - de_fault (to_fetch_registers, - (void (*) (int)) - target_ignore); - de_fault (to_store_registers, - (void (*) (int)) - noprocess); - de_fault (to_prepare_to_store, - (void (*) (void)) - noprocess); - de_fault (to_xfer_memory, - (int (*) (CORE_ADDR, char *, int, int, struct mem_attrib *, struct target_ops *)) - nomemory); - de_fault (to_files_info, - (void (*) (struct target_ops *)) - target_ignore); - de_fault (to_insert_breakpoint, - memory_insert_breakpoint); - de_fault (to_remove_breakpoint, - memory_remove_breakpoint); - de_fault (to_can_use_hw_breakpoint, - (int (*) (int, int, int)) - return_zero); - de_fault (to_insert_hw_breakpoint, - (int (*) (CORE_ADDR, char *)) - return_minus_one); - de_fault (to_remove_hw_breakpoint, - (int (*) (CORE_ADDR, char *)) - return_minus_one); - de_fault (to_insert_watchpoint, - (int (*) (CORE_ADDR, int, int)) - return_minus_one); - de_fault (to_remove_watchpoint, - (int (*) (CORE_ADDR, int, int)) - return_minus_one); - de_fault (to_stopped_by_watchpoint, - (int (*) (void)) - return_zero); - de_fault (to_stopped_data_address, - (CORE_ADDR (*) (void)) - return_zero); - de_fault (to_region_size_ok_for_hw_watchpoint, - default_region_size_ok_for_hw_watchpoint); - de_fault (to_terminal_init, - (void (*) (void)) - target_ignore); - de_fault (to_terminal_inferior, - (void (*) (void)) - target_ignore); - de_fault (to_terminal_ours_for_output, - (void (*) (void)) - target_ignore); - de_fault (to_terminal_ours, - (void (*) (void)) - target_ignore); - de_fault (to_terminal_save_ours, - (void (*) (void)) - target_ignore); - de_fault (to_terminal_info, - default_terminal_info); - de_fault (to_kill, - (void (*) (void)) - noprocess); - de_fault (to_load, - (void (*) (char *, int)) - tcomplain); - de_fault (to_lookup_symbol, - (int (*) (char *, CORE_ADDR *)) - nosymbol); - de_fault (to_create_inferior, - maybe_kill_then_create_inferior); - de_fault (to_post_startup_inferior, - (void (*) (ptid_t)) - target_ignore); - de_fault (to_acknowledge_created_inferior, - (void (*) (int)) - target_ignore); - de_fault (to_clone_and_follow_inferior, - default_clone_and_follow_inferior); - de_fault (to_post_follow_inferior_by_clone, - (void (*) (void)) - target_ignore); - de_fault (to_insert_fork_catchpoint, - (int (*) (int)) - tcomplain); - de_fault (to_remove_fork_catchpoint, - (int (*) (int)) - tcomplain); - de_fault (to_insert_vfork_catchpoint, - (int (*) (int)) - tcomplain); - de_fault (to_remove_vfork_catchpoint, - (int (*) (int)) - tcomplain); - de_fault (to_has_forked, - (int (*) (int, int *)) - return_zero); - de_fault (to_has_vforked, - (int (*) (int, int *)) - return_zero); - de_fault (to_can_follow_vfork_prior_to_exec, - (int (*) (void)) - return_zero); - de_fault (to_post_follow_vfork, - (void (*) (int, int, int, int)) - target_ignore); - de_fault (to_insert_exec_catchpoint, - (int (*) (int)) - tcomplain); - de_fault (to_remove_exec_catchpoint, - (int (*) (int)) - tcomplain); - de_fault (to_has_execd, - (int (*) (int, char **)) - return_zero); - de_fault (to_reported_exec_events_per_exec_call, - (int (*) (void)) - return_one); - de_fault (to_has_syscall_event, - (int (*) (int, enum target_waitkind *, int *)) - return_zero); - de_fault (to_has_exited, - (int (*) (int, int, int *)) - return_zero); - de_fault (to_mourn_inferior, - (void (*) (void)) - noprocess); - de_fault (to_can_run, - return_zero); - de_fault (to_notice_signals, - (void (*) (ptid_t)) - target_ignore); - de_fault (to_thread_alive, - (int (*) (ptid_t)) - return_zero); - de_fault (to_find_new_threads, - (void (*) (void)) - target_ignore); - de_fault (to_extra_thread_info, - (char *(*) (struct thread_info *)) - return_zero); - de_fault (to_stop, - (void (*) (void)) - target_ignore); - de_fault (to_rcmd, - (void (*) (char *, struct ui_file *)) - tcomplain); - de_fault (to_enable_exception_callback, - (struct symtab_and_line * (*) (enum exception_event_kind, int)) - nosupport_runtime); - de_fault (to_get_current_exception_event, - (struct exception_event_record * (*) (void)) - nosupport_runtime); - de_fault (to_pid_to_exec_file, - (char *(*) (int)) - return_zero); - de_fault (to_can_async_p, - (int (*) (void)) - return_zero); - de_fault (to_is_async_p, - (int (*) (void)) - return_zero); - de_fault (to_async, - (void (*) (void (*) (enum inferior_event_type, void*), void*)) - tcomplain); -#undef de_fault -} - -/* Go through the target stack from top to bottom, copying over zero entries in - current_target. In effect, we are doing class inheritance through the - pushed target vectors. */ - -static void -update_current_target (void) -{ - struct target_stack_item *item; - struct target_ops *t; - - /* First, reset current_target */ - memset (¤t_target, 0, sizeof current_target); - - for (item = target_stack; item; item = item->next) - { - t = item->target_ops; - -#define INHERIT(FIELD, TARGET) \ - if (!current_target.FIELD) \ - current_target.FIELD = TARGET->FIELD - - INHERIT (to_shortname, t); - INHERIT (to_longname, t); - INHERIT (to_doc, t); - INHERIT (to_open, t); - INHERIT (to_close, t); - INHERIT (to_attach, t); - INHERIT (to_post_attach, t); - INHERIT (to_require_attach, t); - INHERIT (to_detach, t); - INHERIT (to_require_detach, t); - INHERIT (to_resume, t); - INHERIT (to_wait, t); - INHERIT (to_post_wait, t); - INHERIT (to_fetch_registers, t); - INHERIT (to_store_registers, t); - INHERIT (to_prepare_to_store, t); - INHERIT (to_xfer_memory, t); - INHERIT (to_files_info, t); - INHERIT (to_insert_breakpoint, t); - INHERIT (to_remove_breakpoint, t); - INHERIT (to_can_use_hw_breakpoint, t); - INHERIT (to_insert_hw_breakpoint, t); - INHERIT (to_remove_hw_breakpoint, t); - INHERIT (to_insert_watchpoint, t); - INHERIT (to_remove_watchpoint, t); - INHERIT (to_stopped_data_address, t); - INHERIT (to_stopped_by_watchpoint, t); - INHERIT (to_region_size_ok_for_hw_watchpoint, t); - INHERIT (to_terminal_init, t); - INHERIT (to_terminal_inferior, t); - INHERIT (to_terminal_ours_for_output, t); - INHERIT (to_terminal_ours, t); - INHERIT (to_terminal_save_ours, t); - INHERIT (to_terminal_info, t); - INHERIT (to_kill, t); - INHERIT (to_load, t); - INHERIT (to_lookup_symbol, t); - INHERIT (to_create_inferior, t); - INHERIT (to_post_startup_inferior, t); - INHERIT (to_acknowledge_created_inferior, t); - INHERIT (to_clone_and_follow_inferior, t); - INHERIT (to_post_follow_inferior_by_clone, t); - INHERIT (to_insert_fork_catchpoint, t); - INHERIT (to_remove_fork_catchpoint, t); - INHERIT (to_insert_vfork_catchpoint, t); - INHERIT (to_remove_vfork_catchpoint, t); - INHERIT (to_has_forked, t); - INHERIT (to_has_vforked, t); - INHERIT (to_can_follow_vfork_prior_to_exec, t); - INHERIT (to_post_follow_vfork, t); - INHERIT (to_insert_exec_catchpoint, t); - INHERIT (to_remove_exec_catchpoint, t); - INHERIT (to_has_execd, t); - INHERIT (to_reported_exec_events_per_exec_call, t); - INHERIT (to_has_syscall_event, t); - INHERIT (to_has_exited, t); - INHERIT (to_mourn_inferior, t); - INHERIT (to_can_run, t); - INHERIT (to_notice_signals, t); - INHERIT (to_thread_alive, t); - INHERIT (to_find_new_threads, t); - INHERIT (to_pid_to_str, t); - INHERIT (to_extra_thread_info, t); - INHERIT (to_stop, t); - INHERIT (to_query, t); - INHERIT (to_rcmd, t); - INHERIT (to_enable_exception_callback, t); - INHERIT (to_get_current_exception_event, t); - INHERIT (to_pid_to_exec_file, t); - INHERIT (to_stratum, t); - INHERIT (DONT_USE, t); - INHERIT (to_has_all_memory, t); - INHERIT (to_has_memory, t); - INHERIT (to_has_stack, t); - INHERIT (to_has_registers, t); - INHERIT (to_has_execution, t); - INHERIT (to_has_thread_control, t); - INHERIT (to_sections, t); - INHERIT (to_sections_end, t); - INHERIT (to_can_async_p, t); - INHERIT (to_is_async_p, t); - INHERIT (to_async, t); - INHERIT (to_async_mask_value, t); - INHERIT (to_find_memory_regions, t); - INHERIT (to_make_corefile_notes, t); - INHERIT (to_magic, t); - -#undef INHERIT - } -} - -/* Push a new target type into the stack of the existing target accessors, - possibly superseding some of the existing accessors. - - Result is zero if the pushed target ended up on top of the stack, - nonzero if at least one target is on top of it. - - Rather than allow an empty stack, we always have the dummy target at - the bottom stratum, so we can call the function vectors without - checking them. */ - -int -push_target (struct target_ops *t) -{ - struct target_stack_item *cur, *prev, *tmp; - - /* Check magic number. If wrong, it probably means someone changed - the struct definition, but not all the places that initialize one. */ - if (t->to_magic != OPS_MAGIC) - { - fprintf_unfiltered (gdb_stderr, - "Magic number of %s target struct wrong\n", - t->to_shortname); - internal_error (__FILE__, __LINE__, "failed internal consistency check"); - } - - /* Find the proper stratum to install this target in. */ - - for (prev = NULL, cur = target_stack; cur; prev = cur, cur = cur->next) - { - if ((int) (t->to_stratum) >= (int) (cur->target_ops->to_stratum)) - break; - } - - /* If there's already targets at this stratum, remove them. */ - - if (cur) - while (t->to_stratum == cur->target_ops->to_stratum) - { - /* There's already something on this stratum. Close it off. */ - if (cur->target_ops->to_close) - (cur->target_ops->to_close) (0); - if (prev) - prev->next = cur->next; /* Unchain old target_ops */ - else - target_stack = cur->next; /* Unchain first on list */ - tmp = cur->next; - xfree (cur); - cur = tmp; - } - - /* We have removed all targets in our stratum, now add the new one. */ - - tmp = (struct target_stack_item *) - xmalloc (sizeof (struct target_stack_item)); - tmp->next = cur; - tmp->target_ops = t; - - if (prev) - prev->next = tmp; - else - target_stack = tmp; - - update_current_target (); - - cleanup_target (¤t_target); /* Fill in the gaps */ - - if (targetdebug) - setup_target_debug (); - - return prev != 0; -} - -/* Remove a target_ops vector from the stack, wherever it may be. - Return how many times it was removed (0 or 1). */ - -int -unpush_target (struct target_ops *t) -{ - struct target_stack_item *cur, *prev; - - if (t->to_close) - t->to_close (0); /* Let it clean up */ - - /* Look for the specified target. Note that we assume that a target - can only occur once in the target stack. */ - - for (cur = target_stack, prev = NULL; cur; prev = cur, cur = cur->next) - if (cur->target_ops == t) - break; - - if (!cur) - return 0; /* Didn't find target_ops, quit now */ - - /* Unchain the target */ - - if (!prev) - target_stack = cur->next; - else - prev->next = cur->next; - - xfree (cur); /* Release the target_stack_item */ - - update_current_target (); - cleanup_target (¤t_target); - - return 1; -} - -void -pop_target (void) -{ - (current_target.to_close) (0); /* Let it clean up */ - if (unpush_target (target_stack->target_ops) == 1) - return; - - fprintf_unfiltered (gdb_stderr, - "pop_target couldn't find target %s\n", - current_target.to_shortname); - internal_error (__FILE__, __LINE__, "failed internal consistency check"); -} - -#undef MIN -#define MIN(A, B) (((A) <= (B)) ? (A) : (B)) - -/* target_read_string -- read a null terminated string, up to LEN bytes, - from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful. - Set *STRING to a pointer to malloc'd memory containing the data; the caller - is responsible for freeing it. Return the number of bytes successfully - read. */ - -int -target_read_string (CORE_ADDR memaddr, char **string, int len, int *errnop) -{ - int tlen, origlen, offset, i; - char buf[4]; - int errcode = 0; - char *buffer; - int buffer_allocated; - char *bufptr; - unsigned int nbytes_read = 0; - - /* Small for testing. */ - buffer_allocated = 4; - buffer = xmalloc (buffer_allocated); - bufptr = buffer; - - origlen = len; - - while (len > 0) - { - tlen = MIN (len, 4 - (memaddr & 3)); - offset = memaddr & 3; - - errcode = target_xfer_memory (memaddr & ~3, buf, 4, 0); - if (errcode != 0) - { - /* The transfer request might have crossed the boundary to an - unallocated region of memory. Retry the transfer, requesting - a single byte. */ - tlen = 1; - offset = 0; - errcode = target_xfer_memory (memaddr, buf, 1, 0); - if (errcode != 0) - goto done; - } - - if (bufptr - buffer + tlen > buffer_allocated) - { - unsigned int bytes; - bytes = bufptr - buffer; - buffer_allocated *= 2; - buffer = xrealloc (buffer, buffer_allocated); - bufptr = buffer + bytes; - } - - for (i = 0; i < tlen; i++) - { - *bufptr++ = buf[i + offset]; - if (buf[i + offset] == '\000') - { - nbytes_read += i + 1; - goto done; - } - } - - memaddr += tlen; - len -= tlen; - nbytes_read += tlen; - } -done: - if (errnop != NULL) - *errnop = errcode; - if (string != NULL) - *string = buffer; - return nbytes_read; -} - -/* Read LEN bytes of target memory at address MEMADDR, placing the results in - GDB's memory at MYADDR. Returns either 0 for success or an errno value - if any error occurs. - - If an error occurs, no guarantee is made about the contents of the data at - MYADDR. In particular, the caller should not depend upon partial reads - filling the buffer with good data. There is no way for the caller to know - how much good data might have been transfered anyway. Callers that can - deal with partial reads should call target_read_memory_partial. */ - -int -target_read_memory (CORE_ADDR memaddr, char *myaddr, int len) -{ - return target_xfer_memory (memaddr, myaddr, len, 0); -} - -int -target_write_memory (CORE_ADDR memaddr, char *myaddr, int len) -{ - return target_xfer_memory (memaddr, myaddr, len, 1); -} - -static int trust_readonly = 0; - -/* Move memory to or from the targets. The top target gets priority; - if it cannot handle it, it is offered to the next one down, etc. - - Result is -1 on error, or the number of bytes transfered. */ - -int -do_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len, int write, - struct mem_attrib *attrib) -{ - int res; - int done = 0; - struct target_ops *t; - struct target_stack_item *item; - - /* Zero length requests are ok and require no work. */ - if (len == 0) - return 0; - - /* to_xfer_memory is not guaranteed to set errno, even when it returns - 0. */ - errno = 0; - - if (!write && trust_readonly) - { - /* User-settable option, "trust-readonly-sections". If true, - then memory from any SEC_READONLY bfd section may be read - directly from the bfd file. */ - - struct section_table *secp; - - for (secp = current_target.to_sections; - secp < current_target.to_sections_end; - secp++) - { - if (bfd_get_section_flags (secp->bfd, secp->the_bfd_section) - & SEC_READONLY) - if (memaddr >= secp->addr && memaddr < secp->endaddr) - return xfer_memory (memaddr, myaddr, len, 0, - attrib, ¤t_target); - } - } - - /* The quick case is that the top target can handle the transfer. */ - res = current_target.to_xfer_memory - (memaddr, myaddr, len, write, attrib, ¤t_target); - - /* If res <= 0 then we call it again in the loop. Ah well. */ - if (res <= 0) - { - for (item = target_stack; item; item = item->next) - { - t = item->target_ops; - if (!t->to_has_memory) - continue; - - res = t->to_xfer_memory (memaddr, myaddr, len, write, attrib, t); - if (res > 0) - break; /* Handled all or part of xfer */ - if (t->to_has_all_memory) - break; - } - - if (res <= 0) - return -1; - } - - return res; -} - - -/* Perform a memory transfer. Iterate until the entire region has - been transfered. - - Result is 0 or errno value. */ - -static int -target_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len, int write) -{ - int res; - int reg_len; - struct mem_region *region; - - /* Zero length requests are ok and require no work. */ - if (len == 0) - { - return 0; - } - - while (len > 0) - { - region = lookup_mem_region(memaddr); - if (memaddr + len < region->hi) - reg_len = len; - else - reg_len = region->hi - memaddr; - - switch (region->attrib.mode) - { - case MEM_RO: - if (write) - return EIO; - break; - - case MEM_WO: - if (!write) - return EIO; - break; - } - - while (reg_len > 0) - { - if (region->attrib.cache) - res = dcache_xfer_memory (target_dcache, memaddr, myaddr, - reg_len, write); - else - res = do_xfer_memory (memaddr, myaddr, reg_len, write, - ®ion->attrib); - - if (res <= 0) - { - /* If this address is for nonexistent memory, read zeros - if reading, or do nothing if writing. Return - error. */ - if (!write) - memset (myaddr, 0, len); - if (errno == 0) - return EIO; - else - return errno; - } - - memaddr += res; - myaddr += res; - len -= res; - reg_len -= res; - } - } - - return 0; /* We managed to cover it all somehow. */ -} - - -/* Perform a partial memory transfer. - - Result is -1 on error, or the number of bytes transfered. */ - -static int -target_xfer_memory_partial (CORE_ADDR memaddr, char *myaddr, int len, - int write_p, int *err) -{ - int res; - int reg_len; - struct mem_region *region; - - /* Zero length requests are ok and require no work. */ - if (len == 0) - { - *err = 0; - return 0; - } - - region = lookup_mem_region(memaddr); - if (memaddr + len < region->hi) - reg_len = len; - else - reg_len = region->hi - memaddr; - - switch (region->attrib.mode) - { - case MEM_RO: - if (write_p) - { - *err = EIO; - return -1; - } - break; - - case MEM_WO: - if (write_p) - { - *err = EIO; - return -1; - } - break; - } - - if (region->attrib.cache) - res = dcache_xfer_memory (target_dcache, memaddr, myaddr, - reg_len, write_p); - else - res = do_xfer_memory (memaddr, myaddr, reg_len, write_p, - ®ion->attrib); - - if (res <= 0) - { - if (errno != 0) - *err = errno; - else - *err = EIO; - - return -1; - } - - *err = 0; - return res; -} - -int -target_read_memory_partial (CORE_ADDR memaddr, char *buf, int len, int *err) -{ - return target_xfer_memory_partial (memaddr, buf, len, 0, err); -} - -int -target_write_memory_partial (CORE_ADDR memaddr, char *buf, int len, int *err) -{ - return target_xfer_memory_partial (memaddr, buf, len, 1, err); -} - -/* ARGSUSED */ -static void -target_info (char *args, int from_tty) -{ - struct target_ops *t; - struct target_stack_item *item; - int has_all_mem = 0; - - if (symfile_objfile != NULL) - printf_unfiltered ("Symbols from \"%s\".\n", symfile_objfile->name); - -#ifdef FILES_INFO_HOOK - if (FILES_INFO_HOOK ()) - return; -#endif - - for (item = target_stack; item; item = item->next) - { - t = item->target_ops; - - if (!t->to_has_memory) - continue; - - if ((int) (t->to_stratum) <= (int) dummy_stratum) - continue; - if (has_all_mem) - printf_unfiltered ("\tWhile running this, GDB does not access memory from...\n"); - printf_unfiltered ("%s:\n", t->to_longname); - (t->to_files_info) (t); - has_all_mem = t->to_has_all_memory; - } -} - -/* This is to be called by the open routine before it does - anything. */ - -void -target_preopen (int from_tty) -{ - dont_repeat (); - - if (target_has_execution) - { - if (!from_tty - || query ("A program is being debugged already. Kill it? ")) - target_kill (); - else - error ("Program not killed."); - } - - /* Calling target_kill may remove the target from the stack. But if - it doesn't (which seems like a win for UDI), remove it now. */ - - if (target_has_execution) - pop_target (); -} - -/* Detach a target after doing deferred register stores. */ - -void -target_detach (char *args, int from_tty) -{ - /* Handle any optimized stores to the inferior. */ -#ifdef DO_DEFERRED_STORES - DO_DEFERRED_STORES; -#endif - (current_target.to_detach) (args, from_tty); -} - -void -target_link (char *modname, CORE_ADDR *t_reloc) -{ - if (STREQ (current_target.to_shortname, "rombug")) - { - (current_target.to_lookup_symbol) (modname, t_reloc); - if (*t_reloc == 0) - error ("Unable to link to %s and get relocation in rombug", modname); - } - else - *t_reloc = (CORE_ADDR) -1; -} - -int -target_async_mask (int mask) -{ - int saved_async_masked_status = target_async_mask_value; - target_async_mask_value = mask; - return saved_async_masked_status; -} - -/* Look through the list of possible targets for a target that can - execute a run or attach command without any other data. This is - used to locate the default process stratum. - - Result is always valid (error() is called for errors). */ - -static struct target_ops * -find_default_run_target (char *do_mesg) -{ - struct target_ops **t; - struct target_ops *runable = NULL; - int count; - - count = 0; - - for (t = target_structs; t < target_structs + target_struct_size; - ++t) - { - if ((*t)->to_can_run && target_can_run (*t)) - { - runable = *t; - ++count; - } - } - - if (count != 1) - error ("Don't know how to %s. Try \"help target\".", do_mesg); - - return runable; -} - -void -find_default_attach (char *args, int from_tty) -{ - struct target_ops *t; - - t = find_default_run_target ("attach"); - (t->to_attach) (args, from_tty); - return; -} - -void -find_default_require_attach (char *args, int from_tty) -{ - struct target_ops *t; - - t = find_default_run_target ("require_attach"); - (t->to_require_attach) (args, from_tty); - return; -} - -void -find_default_require_detach (int pid, char *args, int from_tty) -{ - struct target_ops *t; - - t = find_default_run_target ("require_detach"); - (t->to_require_detach) (pid, args, from_tty); - return; -} - -void -find_default_create_inferior (char *exec_file, char *allargs, char **env) -{ - struct target_ops *t; - - t = find_default_run_target ("run"); - (t->to_create_inferior) (exec_file, allargs, env); - return; -} - -void -find_default_clone_and_follow_inferior (int child_pid, int *followed_child) -{ - struct target_ops *t; - - t = find_default_run_target ("run"); - (t->to_clone_and_follow_inferior) (child_pid, followed_child); - return; -} - -static int -default_region_size_ok_for_hw_watchpoint (int byte_count) -{ - return (byte_count <= REGISTER_SIZE); -} - -static int -return_zero (void) -{ - return 0; -} - -static int -return_one (void) -{ - return 1; -} - -static int -return_minus_one (void) -{ - return -1; -} - -/* - * Resize the to_sections pointer. Also make sure that anyone that - * was holding on to an old value of it gets updated. - * Returns the old size. - */ - -int -target_resize_to_sections (struct target_ops *target, int num_added) -{ - struct target_ops **t; - struct section_table *old_value; - int old_count; - - old_value = target->to_sections; - - if (target->to_sections) - { - old_count = target->to_sections_end - target->to_sections; - target->to_sections = (struct section_table *) - xrealloc ((char *) target->to_sections, - (sizeof (struct section_table)) * (num_added + old_count)); - } - else - { - old_count = 0; - target->to_sections = (struct section_table *) - xmalloc ((sizeof (struct section_table)) * num_added); - } - target->to_sections_end = target->to_sections + (num_added + old_count); - - /* Check to see if anyone else was pointing to this structure. - If old_value was null, then no one was. */ - - if (old_value) - { - for (t = target_structs; t < target_structs + target_struct_size; - ++t) - { - if ((*t)->to_sections == old_value) - { - (*t)->to_sections = target->to_sections; - (*t)->to_sections_end = target->to_sections_end; - } - } - } - - return old_count; - -} - -/* Remove all target sections taken from ABFD. - - Scan the current target stack for targets whose section tables - refer to sections from BFD, and remove those sections. We use this - when we notice that the inferior has unloaded a shared object, for - example. */ -void -remove_target_sections (bfd *abfd) -{ - struct target_ops **t; - - for (t = target_structs; t < target_structs + target_struct_size; t++) - { - struct section_table *src, *dest; - - dest = (*t)->to_sections; - for (src = (*t)->to_sections; src < (*t)->to_sections_end; src++) - if (src->bfd != abfd) - { - /* Keep this section. */ - if (dest < src) *dest = *src; - dest++; - } - - /* If we've dropped any sections, resize the section table. */ - if (dest < src) - target_resize_to_sections (*t, dest - src); - } -} - - - - -/* Find a single runnable target in the stack and return it. If for - some reason there is more than one, return NULL. */ - -struct target_ops * -find_run_target (void) -{ - struct target_ops **t; - struct target_ops *runable = NULL; - int count; - - count = 0; - - for (t = target_structs; t < target_structs + target_struct_size; ++t) - { - if ((*t)->to_can_run && target_can_run (*t)) - { - runable = *t; - ++count; - } - } - - return (count == 1 ? runable : NULL); -} - -/* Find a single core_stratum target in the list of targets and return it. - If for some reason there is more than one, return NULL. */ - -struct target_ops * -find_core_target (void) -{ - struct target_ops **t; - struct target_ops *runable = NULL; - int count; - - count = 0; - - for (t = target_structs; t < target_structs + target_struct_size; - ++t) - { - if ((*t)->to_stratum == core_stratum) - { - runable = *t; - ++count; - } - } - - return (count == 1 ? runable : NULL); -} - -/* - * Find the next target down the stack from the specified target. - */ - -struct target_ops * -find_target_beneath (struct target_ops *t) -{ - struct target_stack_item *cur; - - for (cur = target_stack; cur; cur = cur->next) - if (cur->target_ops == t) - break; - - if (cur == NULL || cur->next == NULL) - return NULL; - else - return cur->next->target_ops; -} - - -/* The inferior process has died. Long live the inferior! */ - -void -generic_mourn_inferior (void) -{ - extern int show_breakpoint_hit_counts; - - inferior_ptid = null_ptid; - attach_flag = 0; - breakpoint_init_inferior (inf_exited); - registers_changed (); - -#ifdef CLEAR_DEFERRED_STORES - /* Delete any pending stores to the inferior... */ - CLEAR_DEFERRED_STORES; -#endif - - reopen_exec_file (); - reinit_frame_cache (); - - /* It is confusing to the user for ignore counts to stick around - from previous runs of the inferior. So clear them. */ - /* However, it is more confusing for the ignore counts to disappear when - using hit counts. So don't clear them if we're counting hits. */ - if (!show_breakpoint_hit_counts) - breakpoint_clear_ignore_counts (); - - if (detach_hook) - detach_hook (); -} - -/* Helper function for child_wait and the Lynx derivatives of child_wait. - HOSTSTATUS is the waitstatus from wait() or the equivalent; store our - translation of that in OURSTATUS. */ -void -store_waitstatus (struct target_waitstatus *ourstatus, int hoststatus) -{ -#ifdef CHILD_SPECIAL_WAITSTATUS - /* CHILD_SPECIAL_WAITSTATUS should return nonzero and set *OURSTATUS - if it wants to deal with hoststatus. */ - if (CHILD_SPECIAL_WAITSTATUS (ourstatus, hoststatus)) - return; -#endif - - if (WIFEXITED (hoststatus)) - { - ourstatus->kind = TARGET_WAITKIND_EXITED; - ourstatus->value.integer = WEXITSTATUS (hoststatus); - } - else if (!WIFSTOPPED (hoststatus)) - { - ourstatus->kind = TARGET_WAITKIND_SIGNALLED; - ourstatus->value.sig = target_signal_from_host (WTERMSIG (hoststatus)); - } - else - { - ourstatus->kind = TARGET_WAITKIND_STOPPED; - ourstatus->value.sig = target_signal_from_host (WSTOPSIG (hoststatus)); - } -} - -/* Returns zero to leave the inferior alone, one to interrupt it. */ -int (*target_activity_function) (void); -int target_activity_fd; - -/* Convert a normal process ID to a string. Returns the string in a static - buffer. */ - -char * -normal_pid_to_str (ptid_t ptid) -{ - static char buf[30]; - - sprintf (buf, "process %d", PIDGET (ptid)); - return buf; -} - -/* Some targets (such as ttrace-based HPUX) don't allow us to request - notification of inferior events such as fork and vork immediately - after the inferior is created. (This because of how gdb gets an - inferior created via invoking a shell to do it. In such a scenario, - if the shell init file has commands in it, the shell will fork and - exec for each of those commands, and we will see each such fork - event. Very bad.) - - This function is used by all targets that allow us to request - notification of forks, etc at inferior creation time; e.g., in - target_acknowledge_forked_child. - */ -static void -normal_target_post_startup_inferior (ptid_t ptid) -{ - /* This space intentionally left blank. */ -} - -/* Error-catcher for target_find_memory_regions */ -/* ARGSUSED */ -static int dummy_find_memory_regions (int (*ignore1) (), void *ignore2) -{ - error ("No target."); - return 0; -} - -/* Error-catcher for target_make_corefile_notes */ -/* ARGSUSED */ -static char * dummy_make_corefile_notes (bfd *ignore1, int *ignore2) -{ - error ("No target."); - return NULL; -} - -/* Set up the handful of non-empty slots needed by the dummy target - vector. */ - -static void -init_dummy_target (void) -{ - dummy_target.to_shortname = "None"; - dummy_target.to_longname = "None"; - dummy_target.to_doc = ""; - dummy_target.to_attach = find_default_attach; - dummy_target.to_require_attach = find_default_require_attach; - dummy_target.to_require_detach = find_default_require_detach; - dummy_target.to_create_inferior = find_default_create_inferior; - dummy_target.to_clone_and_follow_inferior = find_default_clone_and_follow_inferior; - dummy_target.to_pid_to_str = normal_pid_to_str; - dummy_target.to_stratum = dummy_stratum; - dummy_target.to_find_memory_regions = dummy_find_memory_regions; - dummy_target.to_make_corefile_notes = dummy_make_corefile_notes; - dummy_target.to_magic = OPS_MAGIC; -} - - -static struct target_ops debug_target; - -static void -debug_to_open (char *args, int from_tty) -{ - debug_target.to_open (args, from_tty); - - fprintf_unfiltered (gdb_stdlog, "target_open (%s, %d)\n", args, from_tty); -} - -static void -debug_to_close (int quitting) -{ - debug_target.to_close (quitting); - - fprintf_unfiltered (gdb_stdlog, "target_close (%d)\n", quitting); -} - -static void -debug_to_attach (char *args, int from_tty) -{ - debug_target.to_attach (args, from_tty); - - fprintf_unfiltered (gdb_stdlog, "target_attach (%s, %d)\n", args, from_tty); -} - - -static void -debug_to_post_attach (int pid) -{ - debug_target.to_post_attach (pid); - - fprintf_unfiltered (gdb_stdlog, "target_post_attach (%d)\n", pid); -} - -static void -debug_to_require_attach (char *args, int from_tty) -{ - debug_target.to_require_attach (args, from_tty); - - fprintf_unfiltered (gdb_stdlog, - "target_require_attach (%s, %d)\n", args, from_tty); -} - -static void -debug_to_detach (char *args, int from_tty) -{ - debug_target.to_detach (args, from_tty); - - fprintf_unfiltered (gdb_stdlog, "target_detach (%s, %d)\n", args, from_tty); -} - -static void -debug_to_require_detach (int pid, char *args, int from_tty) -{ - debug_target.to_require_detach (pid, args, from_tty); - - fprintf_unfiltered (gdb_stdlog, - "target_require_detach (%d, %s, %d)\n", pid, args, from_tty); -} - -static void -debug_to_resume (ptid_t ptid, int step, enum target_signal siggnal) -{ - debug_target.to_resume (ptid, step, siggnal); - - fprintf_unfiltered (gdb_stdlog, "target_resume (%d, %s, %s)\n", PIDGET (ptid), - step ? "step" : "continue", - target_signal_to_name (siggnal)); -} - -static ptid_t -debug_to_wait (ptid_t ptid, struct target_waitstatus *status) -{ - ptid_t retval; - - retval = debug_target.to_wait (ptid, status); - - fprintf_unfiltered (gdb_stdlog, - "target_wait (%d, status) = %d, ", PIDGET (ptid), - PIDGET (retval)); - fprintf_unfiltered (gdb_stdlog, "status->kind = "); - switch (status->kind) - { - case TARGET_WAITKIND_EXITED: - fprintf_unfiltered (gdb_stdlog, "exited, status = %d\n", - status->value.integer); - break; - case TARGET_WAITKIND_STOPPED: - fprintf_unfiltered (gdb_stdlog, "stopped, signal = %s\n", - target_signal_to_name (status->value.sig)); - break; - case TARGET_WAITKIND_SIGNALLED: - fprintf_unfiltered (gdb_stdlog, "signalled, signal = %s\n", - target_signal_to_name (status->value.sig)); - break; - case TARGET_WAITKIND_LOADED: - fprintf_unfiltered (gdb_stdlog, "loaded\n"); - break; - case TARGET_WAITKIND_FORKED: - fprintf_unfiltered (gdb_stdlog, "forked\n"); - break; - case TARGET_WAITKIND_VFORKED: - fprintf_unfiltered (gdb_stdlog, "vforked\n"); - break; - case TARGET_WAITKIND_EXECD: - fprintf_unfiltered (gdb_stdlog, "execd\n"); - break; - case TARGET_WAITKIND_SPURIOUS: - fprintf_unfiltered (gdb_stdlog, "spurious\n"); - break; - default: - fprintf_unfiltered (gdb_stdlog, "unknown???\n"); - break; - } - - return retval; -} - -static void -debug_to_post_wait (ptid_t ptid, int status) -{ - debug_target.to_post_wait (ptid, status); - - fprintf_unfiltered (gdb_stdlog, "target_post_wait (%d, %d)\n", - PIDGET (ptid), status); -} - -static void -debug_print_register (const char * func, int regno) -{ - fprintf_unfiltered (gdb_stdlog, "%s ", func); - if (regno >= 0 && regno < NUM_REGS + NUM_PSEUDO_REGS - && REGISTER_NAME (regno) != NULL && REGISTER_NAME (regno)[0] != '\0') - fprintf_unfiltered (gdb_stdlog, "(%s)", REGISTER_NAME (regno)); - else - fprintf_unfiltered (gdb_stdlog, "(%d)", regno); - if (regno >= 0) - { - int i; - unsigned char *buf = alloca (MAX_REGISTER_RAW_SIZE); - read_register_gen (regno, buf); - fprintf_unfiltered (gdb_stdlog, " = "); - for (i = 0; i < REGISTER_RAW_SIZE (regno); i++) - { - fprintf_unfiltered (gdb_stdlog, "%02x", buf[i]); - } - if (REGISTER_RAW_SIZE (regno) <= sizeof (LONGEST)) - { - fprintf_unfiltered (gdb_stdlog, " 0x%s %s", - paddr_nz (read_register (regno)), - paddr_d (read_register (regno))); - } - } - fprintf_unfiltered (gdb_stdlog, "\n"); -} - -static void -debug_to_fetch_registers (int regno) -{ - debug_target.to_fetch_registers (regno); - debug_print_register ("target_fetch_registers", regno); -} - -static void -debug_to_store_registers (int regno) -{ - debug_target.to_store_registers (regno); - debug_print_register ("target_store_registers", regno); - fprintf_unfiltered (gdb_stdlog, "\n"); -} - -static void -debug_to_prepare_to_store (void) -{ - debug_target.to_prepare_to_store (); - - fprintf_unfiltered (gdb_stdlog, "target_prepare_to_store ()\n"); -} - -static int -debug_to_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len, int write, - struct mem_attrib *attrib, - struct target_ops *target) -{ - int retval; - - retval = debug_target.to_xfer_memory (memaddr, myaddr, len, write, - attrib, target); - - fprintf_unfiltered (gdb_stdlog, - "target_xfer_memory (0x%x, xxx, %d, %s, xxx) = %d", - (unsigned int) memaddr, /* possable truncate long long */ - len, write ? "write" : "read", retval); - - - - if (retval > 0) - { - int i; - - fputs_unfiltered (", bytes =", gdb_stdlog); - for (i = 0; i < retval; i++) - { - if ((((long) &(myaddr[i])) & 0xf) == 0) - fprintf_unfiltered (gdb_stdlog, "\n"); - fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff); - } - } - - fputc_unfiltered ('\n', gdb_stdlog); - - return retval; -} - -static void -debug_to_files_info (struct target_ops *target) -{ - debug_target.to_files_info (target); - - fprintf_unfiltered (gdb_stdlog, "target_files_info (xxx)\n"); -} - -static int -debug_to_insert_breakpoint (CORE_ADDR addr, char *save) -{ - int retval; - - retval = debug_target.to_insert_breakpoint (addr, save); - - fprintf_unfiltered (gdb_stdlog, - "target_insert_breakpoint (0x%lx, xxx) = %ld\n", - (unsigned long) addr, - (unsigned long) retval); - return retval; -} - -static int -debug_to_remove_breakpoint (CORE_ADDR addr, char *save) -{ - int retval; - - retval = debug_target.to_remove_breakpoint (addr, save); - - fprintf_unfiltered (gdb_stdlog, - "target_remove_breakpoint (0x%lx, xxx) = %ld\n", - (unsigned long) addr, - (unsigned long) retval); - return retval; -} - -static int -debug_to_can_use_hw_breakpoint (int type, int cnt, int from_tty) -{ - int retval; - - retval = debug_target.to_can_use_hw_breakpoint (type, cnt, from_tty); - - fprintf_unfiltered (gdb_stdlog, - "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n", - (unsigned long) type, - (unsigned long) cnt, - (unsigned long) from_tty, - (unsigned long) retval); - return retval; -} - -static int -debug_to_region_size_ok_for_hw_watchpoint (int byte_count) -{ - CORE_ADDR retval; - - retval = debug_target.to_region_size_ok_for_hw_watchpoint (byte_count); - - fprintf_unfiltered (gdb_stdlog, - "TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT (%ld) = 0x%lx\n", - (unsigned long) byte_count, - (unsigned long) retval); - return retval; -} - -static int -debug_to_stopped_by_watchpoint (void) -{ - int retval; - - retval = debug_target.to_stopped_by_watchpoint (); - - fprintf_unfiltered (gdb_stdlog, - "STOPPED_BY_WATCHPOINT () = %ld\n", - (unsigned long) retval); - return retval; -} - -static CORE_ADDR -debug_to_stopped_data_address (void) -{ - CORE_ADDR retval; - - retval = debug_target.to_stopped_data_address (); - - fprintf_unfiltered (gdb_stdlog, - "target_stopped_data_address () = 0x%lx\n", - (unsigned long) retval); - return retval; -} - -static int -debug_to_insert_hw_breakpoint (CORE_ADDR addr, char *save) -{ - int retval; - - retval = debug_target.to_insert_hw_breakpoint (addr, save); - - fprintf_unfiltered (gdb_stdlog, - "target_insert_hw_breakpoint (0x%lx, xxx) = %ld\n", - (unsigned long) addr, - (unsigned long) retval); - return retval; -} - -static int -debug_to_remove_hw_breakpoint (CORE_ADDR addr, char *save) -{ - int retval; - - retval = debug_target.to_remove_hw_breakpoint (addr, save); - - fprintf_unfiltered (gdb_stdlog, - "target_remove_hw_breakpoint (0x%lx, xxx) = %ld\n", - (unsigned long) addr, - (unsigned long) retval); - return retval; -} - -static int -debug_to_insert_watchpoint (CORE_ADDR addr, int len, int type) -{ - int retval; - - retval = debug_target.to_insert_watchpoint (addr, len, type); - - fprintf_unfiltered (gdb_stdlog, - "target_insert_watchpoint (0x%lx, %d, %d) = %ld\n", - (unsigned long) addr, len, type, (unsigned long) retval); - return retval; -} - -static int -debug_to_remove_watchpoint (CORE_ADDR addr, int len, int type) -{ - int retval; - - retval = debug_target.to_insert_watchpoint (addr, len, type); - - fprintf_unfiltered (gdb_stdlog, - "target_insert_watchpoint (0x%lx, %d, %d) = %ld\n", - (unsigned long) addr, len, type, (unsigned long) retval); - return retval; -} - -static void -debug_to_terminal_init (void) -{ - debug_target.to_terminal_init (); - - fprintf_unfiltered (gdb_stdlog, "target_terminal_init ()\n"); -} - -static void -debug_to_terminal_inferior (void) -{ - debug_target.to_terminal_inferior (); - - fprintf_unfiltered (gdb_stdlog, "target_terminal_inferior ()\n"); -} - -static void -debug_to_terminal_ours_for_output (void) -{ - debug_target.to_terminal_ours_for_output (); - - fprintf_unfiltered (gdb_stdlog, "target_terminal_ours_for_output ()\n"); -} - -static void -debug_to_terminal_ours (void) -{ - debug_target.to_terminal_ours (); - - fprintf_unfiltered (gdb_stdlog, "target_terminal_ours ()\n"); -} - -static void -debug_to_terminal_save_ours (void) -{ - debug_target.to_terminal_save_ours (); - - fprintf_unfiltered (gdb_stdlog, "target_terminal_save_ours ()\n"); -} - -static void -debug_to_terminal_info (char *arg, int from_tty) -{ - debug_target.to_terminal_info (arg, from_tty); - - fprintf_unfiltered (gdb_stdlog, "target_terminal_info (%s, %d)\n", arg, - from_tty); -} - -static void -debug_to_kill (void) -{ - debug_target.to_kill (); - - fprintf_unfiltered (gdb_stdlog, "target_kill ()\n"); -} - -static void -debug_to_load (char *args, int from_tty) -{ - debug_target.to_load (args, from_tty); - - fprintf_unfiltered (gdb_stdlog, "target_load (%s, %d)\n", args, from_tty); -} - -static int -debug_to_lookup_symbol (char *name, CORE_ADDR *addrp) -{ - int retval; - - retval = debug_target.to_lookup_symbol (name, addrp); - - fprintf_unfiltered (gdb_stdlog, "target_lookup_symbol (%s, xxx)\n", name); - - return retval; -} - -static void -debug_to_create_inferior (char *exec_file, char *args, char **env) -{ - debug_target.to_create_inferior (exec_file, args, env); - - fprintf_unfiltered (gdb_stdlog, "target_create_inferior (%s, %s, xxx)\n", - exec_file, args); -} - -static void -debug_to_post_startup_inferior (ptid_t ptid) -{ - debug_target.to_post_startup_inferior (ptid); - - fprintf_unfiltered (gdb_stdlog, "target_post_startup_inferior (%d)\n", - PIDGET (ptid)); -} - -static void -debug_to_acknowledge_created_inferior (int pid) -{ - debug_target.to_acknowledge_created_inferior (pid); - - fprintf_unfiltered (gdb_stdlog, "target_acknowledge_created_inferior (%d)\n", - pid); -} - -static void -debug_to_clone_and_follow_inferior (int child_pid, int *followed_child) -{ - debug_target.to_clone_and_follow_inferior (child_pid, followed_child); - - fprintf_unfiltered (gdb_stdlog, - "target_clone_and_follow_inferior (%d, %d)\n", - child_pid, *followed_child); -} - -static void -debug_to_post_follow_inferior_by_clone (void) -{ - debug_target.to_post_follow_inferior_by_clone (); - - fprintf_unfiltered (gdb_stdlog, "target_post_follow_inferior_by_clone ()\n"); -} - -static int -debug_to_insert_fork_catchpoint (int pid) -{ - int retval; - - retval = debug_target.to_insert_fork_catchpoint (pid); - - fprintf_unfiltered (gdb_stdlog, "target_insert_fork_catchpoint (%d) = %d\n", - pid, retval); - - return retval; -} - -static int -debug_to_remove_fork_catchpoint (int pid) -{ - int retval; - - retval = debug_target.to_remove_fork_catchpoint (pid); - - fprintf_unfiltered (gdb_stdlog, "target_remove_fork_catchpoint (%d) = %d\n", - pid, retval); - - return retval; -} - -static int -debug_to_insert_vfork_catchpoint (int pid) -{ - int retval; - - retval = debug_target.to_insert_vfork_catchpoint (pid); - - fprintf_unfiltered (gdb_stdlog, "target_insert_vfork_catchpoint (%d)= %d\n", - pid, retval); - - return retval; -} - -static int -debug_to_remove_vfork_catchpoint (int pid) -{ - int retval; - - retval = debug_target.to_remove_vfork_catchpoint (pid); - - fprintf_unfiltered (gdb_stdlog, "target_remove_vfork_catchpoint (%d) = %d\n", - pid, retval); - - return retval; -} - -static int -debug_to_has_forked (int pid, int *child_pid) -{ - int has_forked; - - has_forked = debug_target.to_has_forked (pid, child_pid); - - fprintf_unfiltered (gdb_stdlog, "target_has_forked (%d, %d) = %d\n", - pid, *child_pid, has_forked); - - return has_forked; -} - -static int -debug_to_has_vforked (int pid, int *child_pid) -{ - int has_vforked; - - has_vforked = debug_target.to_has_vforked (pid, child_pid); - - fprintf_unfiltered (gdb_stdlog, "target_has_vforked (%d, %d) = %d\n", - pid, *child_pid, has_vforked); - - return has_vforked; -} - -static int -debug_to_can_follow_vfork_prior_to_exec (void) -{ - int can_immediately_follow_vfork; - - can_immediately_follow_vfork = debug_target.to_can_follow_vfork_prior_to_exec (); - - fprintf_unfiltered (gdb_stdlog, "target_can_follow_vfork_prior_to_exec () = %d\n", - can_immediately_follow_vfork); - - return can_immediately_follow_vfork; -} - -static void -debug_to_post_follow_vfork (int parent_pid, int followed_parent, int child_pid, - int followed_child) -{ - debug_target.to_post_follow_vfork (parent_pid, followed_parent, child_pid, followed_child); - - fprintf_unfiltered (gdb_stdlog, - "target_post_follow_vfork (%d, %d, %d, %d)\n", - parent_pid, followed_parent, child_pid, followed_child); -} - -static int -debug_to_insert_exec_catchpoint (int pid) -{ - int retval; - - retval = debug_target.to_insert_exec_catchpoint (pid); - - fprintf_unfiltered (gdb_stdlog, "target_insert_exec_catchpoint (%d) = %d\n", - pid, retval); - - return retval; -} - -static int -debug_to_remove_exec_catchpoint (int pid) -{ - int retval; - - retval = debug_target.to_remove_exec_catchpoint (pid); - - fprintf_unfiltered (gdb_stdlog, "target_remove_exec_catchpoint (%d) = %d\n", - pid, retval); - - return retval; -} - -static int -debug_to_has_execd (int pid, char **execd_pathname) -{ - int has_execd; - - has_execd = debug_target.to_has_execd (pid, execd_pathname); - - fprintf_unfiltered (gdb_stdlog, "target_has_execd (%d, %s) = %d\n", - pid, (*execd_pathname ? *execd_pathname : "<NULL>"), - has_execd); - - return has_execd; -} - -static int -debug_to_reported_exec_events_per_exec_call (void) -{ - int reported_exec_events; - - reported_exec_events = debug_target.to_reported_exec_events_per_exec_call (); - - fprintf_unfiltered (gdb_stdlog, - "target_reported_exec_events_per_exec_call () = %d\n", - reported_exec_events); - - return reported_exec_events; -} - -static int -debug_to_has_syscall_event (int pid, enum target_waitkind *kind, - int *syscall_id) -{ - int has_syscall_event; - char *kind_spelling = "??"; - - has_syscall_event = debug_target.to_has_syscall_event (pid, kind, syscall_id); - if (has_syscall_event) - { - switch (*kind) - { - case TARGET_WAITKIND_SYSCALL_ENTRY: - kind_spelling = "SYSCALL_ENTRY"; - break; - case TARGET_WAITKIND_SYSCALL_RETURN: - kind_spelling = "SYSCALL_RETURN"; - break; - default: - break; - } - } - - fprintf_unfiltered (gdb_stdlog, - "target_has_syscall_event (%d, %s, %d) = %d\n", - pid, kind_spelling, *syscall_id, has_syscall_event); - - return has_syscall_event; -} - -static int -debug_to_has_exited (int pid, int wait_status, int *exit_status) -{ - int has_exited; - - has_exited = debug_target.to_has_exited (pid, wait_status, exit_status); - - fprintf_unfiltered (gdb_stdlog, "target_has_exited (%d, %d, %d) = %d\n", - pid, wait_status, *exit_status, has_exited); - - return has_exited; -} - -static void -debug_to_mourn_inferior (void) -{ - debug_target.to_mourn_inferior (); - - fprintf_unfiltered (gdb_stdlog, "target_mourn_inferior ()\n"); -} - -static int -debug_to_can_run (void) -{ - int retval; - - retval = debug_target.to_can_run (); - - fprintf_unfiltered (gdb_stdlog, "target_can_run () = %d\n", retval); - - return retval; -} - -static void -debug_to_notice_signals (ptid_t ptid) -{ - debug_target.to_notice_signals (ptid); - - fprintf_unfiltered (gdb_stdlog, "target_notice_signals (%d)\n", - PIDGET (ptid)); -} - -static int -debug_to_thread_alive (ptid_t ptid) -{ - int retval; - - retval = debug_target.to_thread_alive (ptid); - - fprintf_unfiltered (gdb_stdlog, "target_thread_alive (%d) = %d\n", - PIDGET (ptid), retval); - - return retval; -} - -static void -debug_to_find_new_threads (void) -{ - debug_target.to_find_new_threads (); - - fputs_unfiltered ("target_find_new_threads ()\n", gdb_stdlog); -} - -static void -debug_to_stop (void) -{ - debug_target.to_stop (); - - fprintf_unfiltered (gdb_stdlog, "target_stop ()\n"); -} - -static int -debug_to_query (int type, char *req, char *resp, int *siz) -{ - int retval; - - retval = debug_target.to_query (type, req, resp, siz); - - fprintf_unfiltered (gdb_stdlog, "target_query (%c, %s, %s, %d) = %d\n", type, req, resp, *siz, retval); - - return retval; -} - -static void -debug_to_rcmd (char *command, - struct ui_file *outbuf) -{ - debug_target.to_rcmd (command, outbuf); - fprintf_unfiltered (gdb_stdlog, "target_rcmd (%s, ...)\n", command); -} - -static struct symtab_and_line * -debug_to_enable_exception_callback (enum exception_event_kind kind, int enable) -{ - struct symtab_and_line *result; - result = debug_target.to_enable_exception_callback (kind, enable); - fprintf_unfiltered (gdb_stdlog, - "target get_exception_callback_sal (%d, %d)\n", - kind, enable); - return result; -} - -static struct exception_event_record * -debug_to_get_current_exception_event (void) -{ - struct exception_event_record *result; - result = debug_target.to_get_current_exception_event (); - fprintf_unfiltered (gdb_stdlog, "target get_current_exception_event ()\n"); - return result; -} - -static char * -debug_to_pid_to_exec_file (int pid) -{ - char *exec_file; - - exec_file = debug_target.to_pid_to_exec_file (pid); - - fprintf_unfiltered (gdb_stdlog, "target_pid_to_exec_file (%d) = %s\n", - pid, exec_file); - - return exec_file; -} - -static void -setup_target_debug (void) -{ - memcpy (&debug_target, ¤t_target, sizeof debug_target); - - current_target.to_open = debug_to_open; - current_target.to_close = debug_to_close; - current_target.to_attach = debug_to_attach; - current_target.to_post_attach = debug_to_post_attach; - current_target.to_require_attach = debug_to_require_attach; - current_target.to_detach = debug_to_detach; - current_target.to_require_detach = debug_to_require_detach; - current_target.to_resume = debug_to_resume; - current_target.to_wait = debug_to_wait; - current_target.to_post_wait = debug_to_post_wait; - current_target.to_fetch_registers = debug_to_fetch_registers; - current_target.to_store_registers = debug_to_store_registers; - current_target.to_prepare_to_store = debug_to_prepare_to_store; - current_target.to_xfer_memory = debug_to_xfer_memory; - current_target.to_files_info = debug_to_files_info; - current_target.to_insert_breakpoint = debug_to_insert_breakpoint; - current_target.to_remove_breakpoint = debug_to_remove_breakpoint; - current_target.to_can_use_hw_breakpoint = debug_to_can_use_hw_breakpoint; - current_target.to_insert_hw_breakpoint = debug_to_insert_hw_breakpoint; - current_target.to_remove_hw_breakpoint = debug_to_remove_hw_breakpoint; - current_target.to_insert_watchpoint = debug_to_insert_watchpoint; - current_target.to_remove_watchpoint = debug_to_remove_watchpoint; - current_target.to_stopped_by_watchpoint = debug_to_stopped_by_watchpoint; - current_target.to_stopped_data_address = debug_to_stopped_data_address; - current_target.to_region_size_ok_for_hw_watchpoint = debug_to_region_size_ok_for_hw_watchpoint; - current_target.to_terminal_init = debug_to_terminal_init; - current_target.to_terminal_inferior = debug_to_terminal_inferior; - current_target.to_terminal_ours_for_output = debug_to_terminal_ours_for_output; - current_target.to_terminal_ours = debug_to_terminal_ours; - current_target.to_terminal_save_ours = debug_to_terminal_save_ours; - current_target.to_terminal_info = debug_to_terminal_info; - current_target.to_kill = debug_to_kill; - current_target.to_load = debug_to_load; - current_target.to_lookup_symbol = debug_to_lookup_symbol; - current_target.to_create_inferior = debug_to_create_inferior; - current_target.to_post_startup_inferior = debug_to_post_startup_inferior; - current_target.to_acknowledge_created_inferior = debug_to_acknowledge_created_inferior; - current_target.to_clone_and_follow_inferior = debug_to_clone_and_follow_inferior; - current_target.to_post_follow_inferior_by_clone = debug_to_post_follow_inferior_by_clone; - current_target.to_insert_fork_catchpoint = debug_to_insert_fork_catchpoint; - current_target.to_remove_fork_catchpoint = debug_to_remove_fork_catchpoint; - current_target.to_insert_vfork_catchpoint = debug_to_insert_vfork_catchpoint; - current_target.to_remove_vfork_catchpoint = debug_to_remove_vfork_catchpoint; - current_target.to_has_forked = debug_to_has_forked; - current_target.to_has_vforked = debug_to_has_vforked; - current_target.to_can_follow_vfork_prior_to_exec = debug_to_can_follow_vfork_prior_to_exec; - current_target.to_post_follow_vfork = debug_to_post_follow_vfork; - current_target.to_insert_exec_catchpoint = debug_to_insert_exec_catchpoint; - current_target.to_remove_exec_catchpoint = debug_to_remove_exec_catchpoint; - current_target.to_has_execd = debug_to_has_execd; - current_target.to_reported_exec_events_per_exec_call = debug_to_reported_exec_events_per_exec_call; - current_target.to_has_syscall_event = debug_to_has_syscall_event; - current_target.to_has_exited = debug_to_has_exited; - current_target.to_mourn_inferior = debug_to_mourn_inferior; - current_target.to_can_run = debug_to_can_run; - current_target.to_notice_signals = debug_to_notice_signals; - current_target.to_thread_alive = debug_to_thread_alive; - current_target.to_find_new_threads = debug_to_find_new_threads; - current_target.to_stop = debug_to_stop; - current_target.to_query = debug_to_query; - current_target.to_rcmd = debug_to_rcmd; - current_target.to_enable_exception_callback = debug_to_enable_exception_callback; - current_target.to_get_current_exception_event = debug_to_get_current_exception_event; - current_target.to_pid_to_exec_file = debug_to_pid_to_exec_file; - -} - - -static char targ_desc[] = -"Names of targets and files being debugged.\n\ -Shows the entire stack of targets currently in use (including the exec-file,\n\ -core-file, and process, if any), as well as the symbol file name."; - -static void -do_monitor_command (char *cmd, - int from_tty) -{ - if ((current_target.to_rcmd - == (void (*) (char *, struct ui_file *)) tcomplain) - || (current_target.to_rcmd == debug_to_rcmd - && (debug_target.to_rcmd - == (void (*) (char *, struct ui_file *)) tcomplain))) - { - error ("\"monitor\" command not supported by this target.\n"); - } - target_rcmd (cmd, gdb_stdtarg); -} - -void -initialize_targets (void) -{ - init_dummy_target (); - push_target (&dummy_target); - - add_info ("target", target_info, targ_desc); - add_info ("files", target_info, targ_desc); - - add_show_from_set - (add_set_cmd ("target", class_maintenance, var_zinteger, - (char *) &targetdebug, - "Set target debugging.\n\ -When non-zero, target debugging is enabled.", &setdebuglist), - &showdebuglist); - - add_setshow_boolean_cmd ("trust-readonly-sections", class_support, - &trust_readonly, "\ -Set mode for reading from readonly sections.\n\ -When this mode is on, memory reads from readonly sections (such as .text)\n\ -will be read from the object file instead of from the target. This will\n\ -result in significant performance improvement for remote targets.", "\ -Show mode for reading from readonly sections.\n", - NULL, NULL, - &setlist, &showlist); - - add_com ("monitor", class_obscure, do_monitor_command, - "Send a command to the remote monitor (remote targets only)."); - - target_dcache = dcache_init (); -} |