+2006-04-18 Daniel Jacobowitz <dan@codesourcery.com>
+
+ * breakpoint.c (deprecated_read_memory_nobpt): Update to use
+ shadow_len.
+ (insert_bp_location, reattach_breakpoints, remove_breakpoint)
+ (delete_breakpoint): Update calls to changed methods.
+ (deprecated_insert_raw_breakpoint, deprecated_remove_raw_breakpoint)
+ (single_step_breakpoints, insert_single_step_breakpoint)
+ (remove_single_step_breakpoints): New.
+ * breakpoint.h (struct bp_target_info): New.
+ (struct bp_location): Replace shadow_contents with
+ target_info and overlay_target_info.
+ (deprecated_insert_raw_breakpoint, deprecated_remove_raw_breakpoint)
+ (insert_single_step_breakpoint, remove_single_step_breakpoints): New
+ prototypes.
+ * gdbarch.sh: Forward declare struct bp_target_info in gdbarch.h.
+ (memory_insert_breakpoint, memory_remove_breakpoint): Update second
+ argument.
+ * mem-break.c (default_memory_insert_breakpoint): Update. Set
+ placed_address, placed_size, and shadow_len.
+ (default_memory_remove_breakpoint): Update. Don't use
+ BREAKPOINT_FROM_PC.
+ (memory_insert_breakpoint, memory_remove_breakpoint): Update.
+ * target.c (update_current_target): Update prototypes for changed
+ functions.
+ (debug_to_insert_breakpoint, debug_to_remove_breakpoint)
+ (debug_to_insert_hw_breakpoint, debug_to_remove_hw_breakpoint):
+ Update.
+ * target.h: Forward declare struct bp_target_info.
+ (struct target_ops): Use a bp_target_info argument for
+ to_insert_breakpoint, to_remove_breakpoint,
+ to_insert_hw_breakpoint, and to_remove_hw_breakpoint.
+ (target_insert_breakpoint, target_remove_breakpoint)
+ (target_insert_hw_breakpoint, target_remove_hw_breakpoint)
+ (memory_insert_breakpoint, memory_remove_breakpoint)
+ (default_memory_insert_breakpoint, default_memory_remove_breakpoint):
+ Update.
+ * config/i386/nm-i386.h: Forward declare struct bp_target_info.
+ (i386_insert_hw_breakpoint, i386_remove_hw_breakpoint): Update.
+ (target_insert_hw_breakpoint, target_remove_hw_breakpoint): Likewise.
+
+ * gdbarch.c, gdbarch.h: Regenerated.
+
+ * alpha-tdep.c (alpha_software_single_step): Use
+ insert_single_step_breakpoint and remove_single_step_breakpoints.
+ Remove unused statics.
+ * arm-tdep.c (arm_software_single_step): Likewise. Add a note.
+ * cris-tdep.c (cris_software_single_step): Likewise.
+ * mips-tdep.c (mips_software_single_step): Likewise.
+ * rs6000-tdep.c (rs6000_software_single_step): Likewise.
+ * sparc-tdep.c (sparc_software_single_step): Likewise.
+ * wince.c (struct thread_info_struct): Remove step_prev.
+ (undoSStep): Use remove_single_step_breakpoints.
+ (wince_software_single_step): Use insert_single_step_breakpoint.
+
+ * corelow.c (ignore): Remove unneeded prototype. Update arguments.
+ * exec.c (ignore): Likewise.
+ * sol-thread.c (ignore): Likewise.
+
+ * procfs.c (dbx_link_shadow_contents): Delete.
+ (dbx_link_bpt): New.
+ (procfs_mourn_inferior): Remove it if necessary.
+ (remove_dbx_link_breakpoint): Use it.
+ (insert_dbx_link_bpt_in_file): Set it.
+ (procfs_init_inferior): Don't update dbx_link_bpt_addr.
+ * rs6000-nat.c (exec_one_dummy_insn): Use
+ deprecated_insert_raw_breakpoint and
+ deprecated_remove_raw_breakpoint.
+ * solib-irix.c (shadow_contents, breakpoint_addr): Delete.
+ (base_breakpoint): New.
+ (disable_break): Use it.
+ (enable_break): Set it.
+
+ * i386-nat.c (i386_insert_hw_breakpoint, i386_remove_hw_breakpoint):
+ Update.
+ * ia64-tdep.c (ia64_memory_insert_breakpoint)
+ (ia64_memory_remove_breakpoint): Likewise.
+ * m32r-tdep.c (m32r_memory_insert_breakpoint)
+ (m32r_memory_remove_breakpoint): Likewise.
+ * monitor.c (monitor_insert_breakpoint, monitor_remove_breakpoint):
+ Likewise. Remove unnecessary prototypes. Use placed_address
+ and placed_size. Removed useless read from memory.
+ * nto-procfs.c (procfs_insert_breakpoint)
+ (procfs_remove_breakpoint, procfs_insert_hw_breakpoint)
+ (procfs_remove_hw_breakpoint): Update.
+ * ocd.c (ocd_insert_breakpoint, ocd_remove_breakpoint): Likewise.
+ * ocd.h (ocd_insert_breakpoint, ocd_remove_breakpoint): Likewise.
+ * ppc-linux-tdep.c (ppc_linux_memory_remove_breakpoint): Likewise.
+ * ppc-tdep.h (ppc_linux_memory_remove_breakpoint): Likewise.
+ * remote-e7000.c (e7000_insert_breakpoint)
+ (e7000_remove_breakpoint): Likewise.
+ * remote-m32r-sdi.c (m32r_insert_breakpoint)
+ (m32r_remove_breakpoint): Likewise.
+ * remote-mips.c (mips_insert_breakpoint)
+ (mips_remove_breakpoint): Likewise.
+ * remote-rdp.c (remote_rdp_insert_breakpoint)
+ (remote_rdp_remove_breakpoint): Likewise.
+ (rdp_step): Use deprecated_insert_raw_breakpoint and
+ deprecated_remove_raw_breakpoint.
+ * remote-sds.c (sds_insert_breakpoint, sds_remove_breakpoint):
+ Update.
+ * remote-sim.c (gdbsim_insert_breakpoint, gdbsim_remove_breakpoint):
+ Delete.
+ (init_gdbsim_ops): Use memory_insert_breakpoint and
+ memory_remove_breakpoint.
+ * remote-st.c (st2000_insert_breakpoint)
+ (st2000_remove_breakpoint): Update. Remove unused
+ BREAKPOINT_FROM_PC.
+ * remote.c (remote_insert_breakpoint, remote_remove_breakpoint):
+ Update. Use placed_address and placed_size.
+ (remote_insert_hw_breakpoint, remote_remove_hw_breakpoint): Likewise.
+
2006-04-12 Daniel Jacobowitz <dan@codesourcery.com>
* remote.c (extended_remote_restart): Pass the correct length
alpha_software_single_step (enum target_signal sig, int insert_breakpoints_p)
{
static CORE_ADDR next_pc;
- typedef char binsn_quantum[BREAKPOINT_MAX];
- static binsn_quantum break_mem;
CORE_ADDR pc;
if (insert_breakpoints_p)
pc = read_pc ();
next_pc = alpha_next_pc (pc);
- target_insert_breakpoint (next_pc, break_mem);
+ insert_single_step_breakpoint (next_pc);
}
else
{
- target_remove_breakpoint (next_pc, break_mem);
+ remove_single_step_breakpoints ();
write_pc (next_pc);
}
}
static void
arm_software_single_step (enum target_signal sig, int insert_bpt)
{
- static int next_pc; /* State between setting and unsetting. */
- static char break_mem[BREAKPOINT_MAX]; /* Temporary storage for mem@bpt */
+ /* NOTE: This may insert the wrong breakpoint instruction when
+ single-stepping over a mode-changing instruction, if the
+ CPSR heuristics are used. */
if (insert_bpt)
{
- next_pc = arm_get_next_pc (read_register (ARM_PC_REGNUM));
- target_insert_breakpoint (next_pc, break_mem);
+ CORE_ADDR next_pc = arm_get_next_pc (read_register (ARM_PC_REGNUM));
+
+ insert_single_step_breakpoint (next_pc);
}
else
- target_remove_breakpoint (next_pc, break_mem);
+ remove_single_step_breakpoints ();
}
#include "bfd-in2.h"
continue;
/* Addresses and length of the part of the breakpoint that
we need to copy. */
- /* XXXX The m68k, sh and h8300 have different local and remote
- breakpoint values. BREAKPOINT_FROM_PC still manages to
- correctly determine the breakpoints memory address and size
- for these targets. */
- bp_addr = b->address;
- bp_size = 0;
- if (BREAKPOINT_FROM_PC (&bp_addr, &bp_size) == NULL)
- continue;
+ bp_addr = b->target_info.placed_address;
+ bp_size = b->target_info.shadow_len;
if (bp_size == 0)
- /* bp isn't valid */
+ /* bp isn't valid, or doesn't shadow memory. */
continue;
if (bp_addr + bp_size <= memaddr)
/* The breakpoint is entirely before the chunk of memory we
}
memcpy (myaddr + bp_addr - memaddr,
- b->shadow_contents + bptoffset, bp_size);
+ b->target_info.shadow_contents + bptoffset, bp_size);
if (bp_addr > memaddr)
{
if (bpt->inserted || bpt->duplicate)
return 0;
+ /* Initialize the target-specific information. */
+ memset (&bpt->target_info, 0, sizeof (bpt->target_info));
+ bpt->target_info.placed_address = bpt->address;
+
if (bpt->loc_type == bp_loc_software_breakpoint
|| bpt->loc_type == bp_loc_hardware_breakpoint)
{
/* No overlay handling: just set the breakpoint. */
if (bpt->loc_type == bp_loc_hardware_breakpoint)
- val = target_insert_hw_breakpoint (bpt->address,
- bpt->shadow_contents);
+ val = target_insert_hw_breakpoint (&bpt->target_info);
else
- val = target_insert_breakpoint (bpt->address,
- bpt->shadow_contents);
+ val = target_insert_breakpoint (&bpt->target_info);
}
else
{
CORE_ADDR addr = overlay_unmapped_address (bpt->address,
bpt->section);
/* Set a software (trap) breakpoint at the LMA. */
- val = target_insert_breakpoint (addr, bpt->shadow_contents);
+ bpt->overlay_target_info = bpt->target_info;
+ bpt->overlay_target_info.placed_address = addr;
+ val = target_insert_breakpoint (&bpt->overlay_target_info);
if (val != 0)
fprintf_unfiltered (tmp_error_stream,
"Overlay breakpoint %d failed: in ROM?",
{
/* Yes. This overlay section is mapped into memory. */
if (bpt->loc_type == bp_loc_hardware_breakpoint)
- val = target_insert_hw_breakpoint (bpt->address,
- bpt->shadow_contents);
+ val = target_insert_hw_breakpoint (&bpt->target_info);
else
- val = target_insert_breakpoint (bpt->address,
- bpt->shadow_contents);
+ val = target_insert_breakpoint (&bpt->target_info);
}
else
{
/* If we get here, we must have a callback mechanism for exception
events -- with g++ style embedded label support, we insert
ordinary breakpoints and not catchpoints. */
- val = target_insert_breakpoint (bpt->address, bpt->shadow_contents);
+ val = target_insert_breakpoint (&bpt->target_info);
if (val)
{
/* Couldn't set breakpoint for some reason */
{
remove_breakpoint (b, mark_inserted);
if (b->loc_type == bp_loc_hardware_breakpoint)
- val = target_insert_hw_breakpoint (b->address, b->shadow_contents);
+ val = target_insert_hw_breakpoint (&b->target_info);
else
- val = target_insert_breakpoint (b->address, b->shadow_contents);
+ val = target_insert_breakpoint (&b->target_info);
/* FIXME drow/2003-10-07: This doesn't handle any other kinds of
breakpoints. It's wrong for watchpoints, for example. */
if (val != 0)
/* No overlay handling: just remove the breakpoint. */
if (b->loc_type == bp_loc_hardware_breakpoint)
- val = target_remove_hw_breakpoint (b->address,
- b->shadow_contents);
+ val = target_remove_hw_breakpoint (&b->target_info);
else
- val = target_remove_breakpoint (b->address, b->shadow_contents);
+ val = target_remove_breakpoint (&b->target_info);
}
else
{
/* Yes -- overlay event support is not active, so we
should have set a breakpoint at the LMA. Remove it.
*/
- CORE_ADDR addr = overlay_unmapped_address (b->address,
- b->section);
/* Ignore any failures: if the LMA is in ROM, we will
have already warned when we failed to insert it. */
if (b->loc_type == bp_loc_hardware_breakpoint)
- target_remove_hw_breakpoint (addr, b->shadow_contents);
+ target_remove_hw_breakpoint (&b->overlay_target_info);
else
- target_remove_breakpoint (addr, b->shadow_contents);
+ target_remove_breakpoint (&b->overlay_target_info);
}
/* Did we set a breakpoint at the VMA?
If so, we will have marked the breakpoint 'inserted'. */
unmapped, but let's not rely on that being safe. We
don't know what the overlay manager might do. */
if (b->loc_type == bp_loc_hardware_breakpoint)
- val = target_remove_hw_breakpoint (b->address,
- b->shadow_contents);
+ val = target_remove_hw_breakpoint (&b->target_info);
else
- val = target_remove_breakpoint (b->address,
- b->shadow_contents);
+ val = target_remove_breakpoint (&b->target_info);
}
else
{
&& breakpoint_enabled (b->owner)
&& !b->duplicate)
{
-
- val = target_remove_breakpoint (b->address, b->shadow_contents);
+ val = target_remove_breakpoint (&b->target_info);
if (val)
return val;
b->inserted = (is == mark_inserted);
&& breakpoint_enabled (b->owner)
&& !b->duplicate)
{
-
- val = target_remove_breakpoint (b->address, b->shadow_contents);
+ val = target_remove_breakpoint (&b->target_info);
if (val)
return val;
_("another breakpoint was inserted on top of "
"a permanent breakpoint"));
+ memset (&b->loc->target_info, 0, sizeof (b->loc->target_info));
+ b->loc->target_info.placed_address = b->loc->address;
if (b->type == bp_hardware_breakpoint)
- val = target_insert_hw_breakpoint (b->loc->address, b->loc->shadow_contents);
+ val = target_insert_hw_breakpoint (&b->loc->target_info);
else
- val = target_insert_breakpoint (b->loc->address, b->loc->shadow_contents);
+ val = target_insert_breakpoint (&b->loc->target_info);
/* If there was an error in the insert, print a message, then stop execution. */
if (val != 0)
error (_("Junk at end of line specification: %s"), string);
return sals;
}
+
+/* Create and insert a raw software breakpoint at PC. Return an
+ identifier, which should be used to remove the breakpoint later.
+ In general, places which call this should be using something on the
+ breakpoint chain instead; this function should be eliminated
+ someday. */
+
+void *
+deprecated_insert_raw_breakpoint (CORE_ADDR pc)
+{
+ struct bp_target_info *bp_tgt;
+
+ bp_tgt = xmalloc (sizeof (struct bp_target_info));
+ memset (bp_tgt, 0, sizeof (struct bp_target_info));
+
+ bp_tgt->placed_address = pc;
+ if (target_insert_breakpoint (bp_tgt) != 0)
+ {
+ /* Could not insert the breakpoint. */
+ xfree (bp_tgt);
+ return NULL;
+ }
+
+ return bp_tgt;
+}
+
+/* Remove a breakpoint BP inserted by deprecated_insert_raw_breakpoint. */
+
+int
+deprecated_remove_raw_breakpoint (void *bp)
+{
+ struct bp_target_info *bp_tgt = bp;
+ int ret;
+
+ ret = target_remove_breakpoint (bp_tgt);
+ xfree (bp_tgt);
+
+ return ret;
+}
+
+/* One (or perhaps two) breakpoints used for software single stepping. */
+
+static void *single_step_breakpoints[2];
+
+/* Create and insert a breakpoint for software single step. */
+
+void
+insert_single_step_breakpoint (CORE_ADDR next_pc)
+{
+ void **bpt_p;
+
+ if (single_step_breakpoints[0] == NULL)
+ bpt_p = &single_step_breakpoints[0];
+ else
+ {
+ gdb_assert (single_step_breakpoints[1] == NULL);
+ bpt_p = &single_step_breakpoints[1];
+ }
+
+ /* NOTE drow/2006-04-11: A future improvement to this function would be
+ to only create the breakpoints once, and actually put them on the
+ breakpoint chain. That would let us use set_raw_breakpoint. We could
+ adjust the addresses each time they were needed. Doing this requires
+ corresponding changes elsewhere where single step breakpoints are
+ handled, however. So, for now, we use this. */
+
+ *bpt_p = deprecated_insert_raw_breakpoint (next_pc);
+ if (*bpt_p == NULL)
+ warning (_("Could not insert single-step breakpoint at 0x%s"),
+ paddr_nz (next_pc));
+}
+
+/* Remove and delete any breakpoints used for software single step. */
+
+void
+remove_single_step_breakpoints (void)
+{
+ gdb_assert (single_step_breakpoints[0] != NULL);
+
+ /* See insert_single_step_breakpoint for more about this deprecated
+ call. */
+ deprecated_remove_raw_breakpoint (single_step_breakpoints[0]);
+ single_step_breakpoints[0] = NULL;
+
+ if (single_step_breakpoints[1] != NULL)
+ {
+ deprecated_remove_raw_breakpoint (single_step_breakpoints[1]);
+ single_step_breakpoints[1] = NULL;
+ }
+}
+
\f
/* This help string is used for the break, hbreak, tbreak and thbreak commands.
It is defined as a macro to prevent duplication.
hw_execute = 3 /* Execute HW breakpoint */
};
+
+/* Information used by targets to insert and remove breakpoints. */
+
+struct bp_target_info
+{
+ /* Address at which the breakpoint was placed. This is normally the
+ same as ADDRESS from the bp_location, except when adjustment
+ happens in BREAKPOINT_FROM_PC. The most common form of
+ adjustment is stripping an alternate ISA marker from the PC which
+ is used to determine the type of breakpoint to insert. */
+ CORE_ADDR placed_address;
+
+ /* If the breakpoint lives in memory and reading that memory would
+ give back the breakpoint, instead of the original contents, then
+ the original contents are cached here. Only SHADOW_LEN bytes of
+ this buffer are valid, and only when the breakpoint is inserted. */
+ gdb_byte shadow_contents[BREAKPOINT_MAX];
+
+ /* The length of the data cached in SHADOW_CONTENTS. */
+ int shadow_len;
+
+ /* The size of the placed breakpoint, according to
+ BREAKPOINT_FROM_PC, when the breakpoint was inserted. This is
+ generally the same as SHADOW_LEN, unless we did not need
+ to read from the target to implement the memory breakpoint
+ (e.g. if a remote stub handled the details). We may still
+ need the size to remove the breakpoint safely. */
+ int placed_size;
+};
+
/* GDB maintains two types of information about each breakpoint (or
watchpoint, or other related event). The first type corresponds
to struct breakpoint; this is a relatively high-level structure
associated with the address. Used primarily for overlay debugging. */
asection *section;
- /* "Real" contents of byte where breakpoint has been inserted.
- Valid only when breakpoints are in the program. Under the complete
- control of the target insert_breakpoint and remove_breakpoint routines.
- No other code should assume anything about the value(s) here.
- Valid only for bp_loc_software_breakpoint. */
- gdb_byte shadow_contents[BREAKPOINT_MAX];
-
/* Address at which breakpoint was requested, either by the user or
by GDB for internal breakpoints. This will usually be the same
as ``address'' (above) except for cases in which
which to place the breakpoint in order to comply with a
processor's architectual constraints. */
CORE_ADDR requested_address;
+
+ /* Details of the placed breakpoint, when inserted. */
+ struct bp_target_info target_info;
+
+ /* Similarly, for the breakpoint at an overlay's LMA, if necessary. */
+ struct bp_target_info overlay_target_info;
};
/* This structure is a collection of function pointers that, if available,
remove fails. */
extern int remove_hw_watchpoints (void);
+/* Manage a software single step breakpoint (or two). Insert may be called
+ twice before remove is called. */
+extern void insert_single_step_breakpoint (CORE_ADDR);
+extern void remove_single_step_breakpoints (void);
+
+/* Manage manual breakpoints, separate from the normal chain of
+ breakpoints. These functions are used in murky target-specific
+ ways. Please do not add more uses! */
+extern void *deprecated_insert_raw_breakpoint (CORE_ADDR);
+extern int deprecated_remove_raw_breakpoint (void *);
/* Indicator of whether exception catchpoints should be nuked between
runs of a program. */
true. Otherwise, return false. */
extern int i386_stopped_data_address (CORE_ADDR *);
-/* Insert a hardware-assisted breakpoint at address ADDR. SHADOW is
- unused. Return 0 on success, EBUSY on failure. */
-extern int i386_insert_hw_breakpoint (CORE_ADDR addr, void *shadow);
+/* Insert a hardware-assisted breakpoint at BP_TGT->placed_address.
+ Return 0 on success, EBUSY on failure. */
+struct bp_target_info;
+extern int i386_insert_hw_breakpoint (struct bp_target_info *bp_tgt);
-/* Remove a hardware-assisted breakpoint at address ADDR. SHADOW is
- unused. Return 0 on success, -1 on failure. */
-extern int i386_remove_hw_breakpoint (CORE_ADDR addr, void *shadow);
+/* Remove a hardware-assisted breakpoint at BP_TGT->placed_address.
+ Return 0 on success, -1 on failure. */
+extern int i386_remove_hw_breakpoint (struct bp_target_info *bp_tgt);
/* Returns the number of hardware watchpoints of type TYPE that we can
set. Value is positive if we can set CNT watchpoints, zero if
#define target_remove_watchpoint(addr, len, type) \
i386_remove_watchpoint (addr, len, type)
-#define target_insert_hw_breakpoint(addr, shadow) \
- i386_insert_hw_breakpoint (addr, shadow)
+#define target_insert_hw_breakpoint(bp_tgt) \
+ i386_insert_hw_breakpoint (bp_tgt)
-#define target_remove_hw_breakpoint(addr, shadow) \
- i386_remove_hw_breakpoint (addr, shadow)
+#define target_remove_hw_breakpoint(bp_tgt) \
+ i386_remove_hw_breakpoint (bp_tgt)
/* child_post_startup_inferior used to
reset all debug registers by calling i386_cleanup_dregs (). */
static void add_to_thread_list (bfd *, asection *, void *);
-static int ignore (CORE_ADDR, bfd_byte *);
-
static int core_file_thread_alive (ptid_t tid);
static void init_core_ops (void);
`gdb internal error' (since generic_mourn calls breakpoint_init_inferior). */
static int
-ignore (CORE_ADDR addr, bfd_byte *contents)
+ignore (struct bp_target_info *bp_tgt)
{
return 0;
}
int disable_interrupt;
} inst_env_type;
-/* Save old breakpoints in order to restore the state before a single_step.
- At most, two breakpoints will have to be remembered. */
-typedef
-char binsn_quantum[BREAKPOINT_MAX];
-static binsn_quantum break_mem[2];
-static CORE_ADDR next_pc = 0;
-static CORE_ADDR branch_target_address = 0;
-static unsigned char branch_break_inserted = 0;
-
/* Machine-dependencies in CRIS for opcodes. */
/* Instruction sizes. */
cris_software_single_step (enum target_signal ignore, int insert_breakpoints)
{
inst_env_type inst_env;
-
+
if (insert_breakpoints)
{
/* Analyse the present instruction environment and insert
{
/* Insert at most two breakpoints. One for the next PC content
and possibly another one for a branch, jump, etc. */
- next_pc = (CORE_ADDR) inst_env.reg[PC_REGNUM];
- target_insert_breakpoint (next_pc, break_mem[0]);
+ CORE_ADDR next_pc = (CORE_ADDR) inst_env.reg[PC_REGNUM];
+ insert_single_step_breakpoint (next_pc);
if (inst_env.branch_found
&& (CORE_ADDR) inst_env.branch_break_address != next_pc)
{
- branch_target_address =
- (CORE_ADDR) inst_env.branch_break_address;
- target_insert_breakpoint (branch_target_address, break_mem[1]);
- branch_break_inserted = 1;
+ CORE_ADDR branch_target_address
+ = (CORE_ADDR) inst_env.branch_break_address;
+ insert_single_step_breakpoint (branch_target_address);
}
}
}
else
- {
- /* Remove breakpoints. */
- target_remove_breakpoint (next_pc, break_mem[0]);
- if (branch_break_inserted)
- {
- target_remove_breakpoint (branch_target_address, break_mem[1]);
- branch_break_inserted = 0;
- }
- }
+ remove_single_step_breakpoints ();
}
/* Calculates the prefix value for quick offset addressing mode. */
+2006-04-18 Daniel Jacobowitz <dan@codesourcery.com>
+
+ * gdbint.texinfo (x86 Watchpoints, Target Conditionals): Update insert
+ and remove breakpoint prototypes.
+ (Watchpoints): Move description of target_insert_hw_breakpoint and
+ target_remove_hw_breakpoint ...
+ (Breakpoints): ... to here. Document target_insert_breakpoint and
+ target_remove_breakpoint.
+
2006-04-17 Jim Blandy <jimb@codesourcery.com>
* gdb.texinfo (Packets): Note that 'addr' arguments to s, S, c,
Basic breakpoint object handling is in @file{breakpoint.c}. However,
much of the interesting breakpoint action is in @file{infrun.c}.
+@table @code
+@cindex insert or remove software breakpoint
+@findex target_remove_breakpoint
+@findex target_insert_breakpoint
+@item target_remove_breakpoint (@var{bp_tgt})
+@itemx target_insert_breakpoint (@var{bp_tgt})
+Insert or remove a software breakpoint at address
+@code{@var{bp_tgt}->placed_address}. Returns zero for success,
+non-zero for failure. On input, @var{bp_tgt} contains the address of the
+breakpoint, and is otherwise initialized to zero. The fields of the
+@code{struct bp_target_info} pointed to by @var{bp_tgt} are updated
+to contain other information about the breakpoint on output. The field
+@code{placed_address} may be updated if the breakpoint was placed at a
+related address; the field @code{shadow_contents} contains the real
+contents of the bytes where the breakpoint has been inserted,
+if reading memory would return the breakpoint instead of the
+underlying memory; the field @code{shadow_len} is the length of
+memory cached in @code{shadow_contents}, if any; and the field
+@code{placed_size} is optionally set and used by the target, if
+it could differ from @code{shadow_len}.
+
+For example, the remote target @samp{Z0} packet does not require
+shadowing memory, so @code{shadow_len} is left at zero. However,
+the length reported by @code{BREAKPOINT_FROM_PC} is cached in
+@code{placed_size}, so that a matching @samp{z0} packet can be
+used to remove the breakpoint.
+
+@cindex insert or remove hardware breakpoint
+@findex target_remove_hw_breakpoint
+@findex target_insert_hw_breakpoint
+@item target_remove_hw_breakpoint (@var{bp_tgt})
+@itemx target_insert_hw_breakpoint (@var{bp_tgt})
+Insert or remove a hardware-assisted breakpoint at address
+@code{@var{bp_tgt}->placed_address}. Returns zero for success,
+non-zero for failure. See @code{target_insert_breakpoint} for
+a description of the @code{struct bp_target_info} pointed to by
+@var{bp_tgt}; the @code{shadow_contents} and
+@code{shadow_len} members are not used for hardware breakpoints,
+but @code{placed_size} may be.
+@end table
+
@section Single Stepping
@section Signal Handling
@noindent
These two macros should return 0 for success, non-zero for failure.
-@cindex insert or remove hardware breakpoint
-@findex target_remove_hw_breakpoint
-@findex target_insert_hw_breakpoint
-@item target_remove_hw_breakpoint (@var{addr}, @var{shadow})
-@itemx target_insert_hw_breakpoint (@var{addr}, @var{shadow})
-Insert or remove a hardware-assisted breakpoint at address @var{addr}.
-Returns zero for success, non-zero for failure. @var{shadow} is the
-real contents of the byte where the breakpoint has been inserted; it
-is generally not valid when hardware breakpoints are used, but since
-no other code touches these values, the implementations of the above
-two macros can use them for their internal purposes.
-
@findex target_stopped_data_address
@item target_stopped_data_address (@var{addr_p})
If the inferior has some watchpoint that triggered, place the address
@findex i386_insert_hw_breakpoint
@findex i386_remove_hw_breakpoint
-@item i386_insert_hw_breakpoint (@var{addr}, @var{shadow}
-@itemx i386_remove_hw_breakpoint (@var{addr}, @var{shadow})
+@item i386_insert_hw_breakpoint (@var{bp_tgt})
+@itemx i386_remove_hw_breakpoint (@var{bp_tgt})
These functions insert and remove hardware-assisted breakpoints. The
macros @code{target_insert_hw_breakpoint} and
@code{target_remove_hw_breakpoint} are set to call these functions.
+The argument is a @code{struct bp_target_info *}, as described in
+the documentation for @code{target_insert_breakpoint}.
These functions work like @code{i386_insert_watchpoint} and
@code{i386_remove_watchpoint}, respectively, except that they set up
the debug registers to watch instruction execution, and each
Replaces all the other @var{BREAKPOINT} macros.
-@item MEMORY_INSERT_BREAKPOINT (@var{addr}, @var{contents_cache})
-@itemx MEMORY_REMOVE_BREAKPOINT (@var{addr}, @var{contents_cache})
+@item MEMORY_INSERT_BREAKPOINT (@var{bp_tgt})
+@itemx MEMORY_REMOVE_BREAKPOINT (@var{bp_tgt})
@findex MEMORY_REMOVE_BREAKPOINT
@findex MEMORY_INSERT_BREAKPOINT
Insert or remove memory based breakpoints. Reasonable defaults
static void exec_files_info (struct target_ops *);
-static int ignore (CORE_ADDR, bfd_byte *);
-
static void init_exec_ops (void);
void _initialize_exec (void);
breakpoint_init_inferior). */
static int
-ignore (CORE_ADDR addr, bfd_byte *contents)
+ignore (struct bp_target_info *bp_tgt)
{
return 0;
}
#ifdef MEMORY_INSERT_BREAKPOINT
fprintf_unfiltered (file,
"gdbarch_dump: %s # %s\n",
- "MEMORY_INSERT_BREAKPOINT(addr, contents_cache)",
- XSTRING (MEMORY_INSERT_BREAKPOINT (addr, contents_cache)));
+ "MEMORY_INSERT_BREAKPOINT(bp_tgt)",
+ XSTRING (MEMORY_INSERT_BREAKPOINT (bp_tgt)));
#endif
fprintf_unfiltered (file,
"gdbarch_dump: memory_insert_breakpoint = <0x%lx>\n",
#ifdef MEMORY_REMOVE_BREAKPOINT
fprintf_unfiltered (file,
"gdbarch_dump: %s # %s\n",
- "MEMORY_REMOVE_BREAKPOINT(addr, contents_cache)",
- XSTRING (MEMORY_REMOVE_BREAKPOINT (addr, contents_cache)));
+ "MEMORY_REMOVE_BREAKPOINT(bp_tgt)",
+ XSTRING (MEMORY_REMOVE_BREAKPOINT (bp_tgt)));
#endif
fprintf_unfiltered (file,
"gdbarch_dump: memory_remove_breakpoint = <0x%lx>\n",
}
int
-gdbarch_memory_insert_breakpoint (struct gdbarch *gdbarch, CORE_ADDR addr, gdb_byte *contents_cache)
+gdbarch_memory_insert_breakpoint (struct gdbarch *gdbarch, struct bp_target_info *bp_tgt)
{
gdb_assert (gdbarch != NULL);
gdb_assert (gdbarch->memory_insert_breakpoint != NULL);
if (gdbarch_debug >= 2)
fprintf_unfiltered (gdb_stdlog, "gdbarch_memory_insert_breakpoint called\n");
- return gdbarch->memory_insert_breakpoint (addr, contents_cache);
+ return gdbarch->memory_insert_breakpoint (bp_tgt);
}
void
}
int
-gdbarch_memory_remove_breakpoint (struct gdbarch *gdbarch, CORE_ADDR addr, gdb_byte *contents_cache)
+gdbarch_memory_remove_breakpoint (struct gdbarch *gdbarch, struct bp_target_info *bp_tgt)
{
gdb_assert (gdbarch != NULL);
gdb_assert (gdbarch->memory_remove_breakpoint != NULL);
if (gdbarch_debug >= 2)
fprintf_unfiltered (gdb_stdlog, "gdbarch_memory_remove_breakpoint called\n");
- return gdbarch->memory_remove_breakpoint (addr, contents_cache);
+ return gdbarch->memory_remove_breakpoint (bp_tgt);
}
void
struct disassemble_info;
struct target_ops;
struct obstack;
+struct bp_target_info;
extern struct gdbarch *current_gdbarch;
extern CORE_ADDR gdbarch_adjust_breakpoint_address (struct gdbarch *gdbarch, CORE_ADDR bpaddr);
extern void set_gdbarch_adjust_breakpoint_address (struct gdbarch *gdbarch, gdbarch_adjust_breakpoint_address_ftype *adjust_breakpoint_address);
-typedef int (gdbarch_memory_insert_breakpoint_ftype) (CORE_ADDR addr, gdb_byte *contents_cache);
-extern int gdbarch_memory_insert_breakpoint (struct gdbarch *gdbarch, CORE_ADDR addr, gdb_byte *contents_cache);
+typedef int (gdbarch_memory_insert_breakpoint_ftype) (struct bp_target_info *bp_tgt);
+extern int gdbarch_memory_insert_breakpoint (struct gdbarch *gdbarch, struct bp_target_info *bp_tgt);
extern void set_gdbarch_memory_insert_breakpoint (struct gdbarch *gdbarch, gdbarch_memory_insert_breakpoint_ftype *memory_insert_breakpoint);
#if !defined (GDB_TM_FILE) && defined (MEMORY_INSERT_BREAKPOINT)
#error "Non multi-arch definition of MEMORY_INSERT_BREAKPOINT"
#endif
#if !defined (MEMORY_INSERT_BREAKPOINT)
-#define MEMORY_INSERT_BREAKPOINT(addr, contents_cache) (gdbarch_memory_insert_breakpoint (current_gdbarch, addr, contents_cache))
+#define MEMORY_INSERT_BREAKPOINT(bp_tgt) (gdbarch_memory_insert_breakpoint (current_gdbarch, bp_tgt))
#endif
-typedef int (gdbarch_memory_remove_breakpoint_ftype) (CORE_ADDR addr, gdb_byte *contents_cache);
-extern int gdbarch_memory_remove_breakpoint (struct gdbarch *gdbarch, CORE_ADDR addr, gdb_byte *contents_cache);
+typedef int (gdbarch_memory_remove_breakpoint_ftype) (struct bp_target_info *bp_tgt);
+extern int gdbarch_memory_remove_breakpoint (struct gdbarch *gdbarch, struct bp_target_info *bp_tgt);
extern void set_gdbarch_memory_remove_breakpoint (struct gdbarch *gdbarch, gdbarch_memory_remove_breakpoint_ftype *memory_remove_breakpoint);
#if !defined (GDB_TM_FILE) && defined (MEMORY_REMOVE_BREAKPOINT)
#error "Non multi-arch definition of MEMORY_REMOVE_BREAKPOINT"
#endif
#if !defined (MEMORY_REMOVE_BREAKPOINT)
-#define MEMORY_REMOVE_BREAKPOINT(addr, contents_cache) (gdbarch_memory_remove_breakpoint (current_gdbarch, addr, contents_cache))
+#define MEMORY_REMOVE_BREAKPOINT(bp_tgt) (gdbarch_memory_remove_breakpoint (current_gdbarch, bp_tgt))
#endif
extern CORE_ADDR gdbarch_decr_pc_after_break (struct gdbarch *gdbarch);
f:=:int:inner_than:CORE_ADDR lhs, CORE_ADDR rhs:lhs, rhs:0:0
f:=:const gdb_byte *:breakpoint_from_pc:CORE_ADDR *pcptr, int *lenptr:pcptr, lenptr::0:
M::CORE_ADDR:adjust_breakpoint_address:CORE_ADDR bpaddr:bpaddr
-f:=:int:memory_insert_breakpoint:CORE_ADDR addr, gdb_byte *contents_cache:addr, contents_cache:0:default_memory_insert_breakpoint::0
-f:=:int:memory_remove_breakpoint:CORE_ADDR addr, gdb_byte *contents_cache:addr, contents_cache:0:default_memory_remove_breakpoint::0
+f:=:int:memory_insert_breakpoint:struct bp_target_info *bp_tgt:bp_tgt:0:default_memory_insert_breakpoint::0
+f:=:int:memory_remove_breakpoint:struct bp_target_info *bp_tgt:bp_tgt:0:default_memory_remove_breakpoint::0
v:=:CORE_ADDR:decr_pc_after_break:::0:::0
# A function can be addressed by either it's "pointer" (possibly a
struct disassemble_info;
struct target_ops;
struct obstack;
+struct bp_target_info;
extern struct gdbarch *current_gdbarch;
EOF
return 0;
}
-/* Insert a hardware-assisted breakpoint at address ADDR. SHADOW is
- unused. Return 0 on success, EBUSY on failure. */
+/* Insert a hardware-assisted breakpoint at BP_TGT->placed_address.
+ Return 0 on success, EBUSY on failure. */
int
-i386_insert_hw_breakpoint (CORE_ADDR addr, void *shadow)
+i386_insert_hw_breakpoint (struct bp_target_info *bp_tgt)
{
unsigned len_rw = i386_length_and_rw_bits (1, hw_execute);
+ CORE_ADDR addr = bp_tgt->placed_address;
int retval = i386_insert_aligned_watchpoint (addr, len_rw) ? EBUSY : 0;
if (maint_show_dr)
return retval;
}
-/* Remove a hardware-assisted breakpoint at address ADDR. SHADOW is
- unused. Return 0 on success, -1 on failure. */
+/* Remove a hardware-assisted breakpoint at BP_TGT->placed_address.
+ Return 0 on success, -1 on failure. */
int
-i386_remove_hw_breakpoint (CORE_ADDR addr, void *shadow)
+i386_remove_hw_breakpoint (struct bp_target_info *bp_tgt)
{
unsigned len_rw = i386_length_and_rw_bits (1, hw_execute);
+ CORE_ADDR addr = bp_tgt->placed_address;
int retval = i386_remove_aligned_watchpoint (addr, len_rw);
if (maint_show_dr)
#define IA64_BREAKPOINT 0x00003333300LL
static int
-ia64_memory_insert_breakpoint (CORE_ADDR addr, bfd_byte *contents_cache)
+ia64_memory_insert_breakpoint (struct bp_target_info *bp_tgt)
{
+ CORE_ADDR addr = bp_tgt->placed_address;
char bundle[BUNDLE_LEN];
int slotnum = (int) (addr & 0x0f) / SLOT_MULTIPLIER;
long long instr;
}
instr = slotN_contents (bundle, slotnum);
- memcpy(contents_cache, &instr, sizeof(instr));
+ memcpy (bp_tgt->shadow_contents, &instr, sizeof (instr));
+ bp_tgt->placed_size = bp_tgt->shadow_len = sizeof (instr);
replace_slotN_contents (bundle, IA64_BREAKPOINT, slotnum);
if (val == 0)
target_write_memory (addr, bundle, BUNDLE_LEN);
}
static int
-ia64_memory_remove_breakpoint (CORE_ADDR addr, bfd_byte *contents_cache)
+ia64_memory_remove_breakpoint (struct bp_target_info *bp_tgt)
{
+ CORE_ADDR addr = bp_tgt->placed_address;
char bundle[BUNDLE_LEN];
int slotnum = (addr & 0x0f) / SLOT_MULTIPLIER;
long long instr;
slotnum = 2;
}
- memcpy (&instr, contents_cache, sizeof instr);
+ memcpy (&instr, bp_tgt->shadow_contents, sizeof instr);
replace_slotN_contents (bundle, instr, slotnum);
if (val == 0)
target_write_memory (addr, bundle, BUNDLE_LEN);
The following functions take care of this behavior. */
static int
-m32r_memory_insert_breakpoint (CORE_ADDR addr, bfd_byte *contents_cache)
+m32r_memory_insert_breakpoint (struct bp_target_info *bp_tgt)
{
+ CORE_ADDR addr = bp_tgt->placed_address;
int val;
gdb_byte buf[4];
+ gdb_byte *contents_cache = bp_tgt->shadow_contents;
gdb_byte bp_entry[] = { 0x10, 0xf1 }; /* dpt */
/* Save the memory contents. */
if (val != 0)
return val; /* return error */
+ bp_tgt->placed_size = bp_tgt->shadow_len = 4;
+
/* Determine appropriate breakpoint contents and size for this address. */
if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG)
{
}
static int
-m32r_memory_remove_breakpoint (CORE_ADDR addr, bfd_byte *contents_cache)
+m32r_memory_remove_breakpoint (struct bp_target_info *bp_tgt)
{
+ CORE_ADDR addr = bp_tgt->placed_address;
int val;
gdb_byte buf[4];
+ gdb_byte *contents_cache = bp_tgt->shadow_contents;
buf[0] = contents_cache[0];
buf[1] = contents_cache[1];
#include "target.h"
-/* Insert a breakpoint on targets that don't have any better breakpoint
- support. We read the contents of the target location and stash it,
- then overwrite it with a breakpoint instruction. ADDR is the target
- location in the target machine. CONTENTS_CACHE is a pointer to
- memory allocated for saving the target contents. It is guaranteed
- by the caller to be long enough to save BREAKPOINT_LEN bytes (this
- is accomplished via BREAKPOINT_MAX). */
+/* Insert a breakpoint on targets that don't have any better
+ breakpoint support. We read the contents of the target location
+ and stash it, then overwrite it with a breakpoint instruction.
+ BP_TGT->placed_address is the target location in the target
+ machine. BP_TGT->shadow_contents is some memory allocated for
+ saving the target contents. It is guaranteed by the caller to be
+ long enough to save BREAKPOINT_LEN bytes (this is accomplished via
+ BREAKPOINT_MAX). */
int
-default_memory_insert_breakpoint (CORE_ADDR addr, bfd_byte *contents_cache)
+default_memory_insert_breakpoint (struct bp_target_info *bp_tgt)
{
int val;
const unsigned char *bp;
int bplen;
/* Determine appropriate breakpoint contents and size for this address. */
- bp = BREAKPOINT_FROM_PC (&addr, &bplen);
+ bp = BREAKPOINT_FROM_PC (&bp_tgt->placed_address, &bp_tgt->placed_size);
if (bp == NULL)
error (_("Software breakpoints not implemented for this target."));
/* Save the memory contents. */
- val = target_read_memory (addr, contents_cache, bplen);
+ bp_tgt->shadow_len = bp_tgt->placed_size;
+ val = target_read_memory (bp_tgt->placed_address, bp_tgt->shadow_contents,
+ bp_tgt->placed_size);
/* Write the breakpoint. */
if (val == 0)
- val = target_write_memory (addr, bp, bplen);
+ val = target_write_memory (bp_tgt->placed_address, bp,
+ bp_tgt->placed_size);
return val;
}
int
-default_memory_remove_breakpoint (CORE_ADDR addr, bfd_byte *contents_cache)
+default_memory_remove_breakpoint (struct bp_target_info *bp_tgt)
{
- const bfd_byte *bp;
- int bplen;
-
- /* Determine appropriate breakpoint contents and size for this address. */
- bp = BREAKPOINT_FROM_PC (&addr, &bplen);
- if (bp == NULL)
- error (_("Software breakpoints not implemented for this target."));
-
- return target_write_memory (addr, contents_cache, bplen);
+ return target_write_memory (bp_tgt->placed_address, bp_tgt->shadow_contents,
+ bp_tgt->placed_size);
}
int
-memory_insert_breakpoint (CORE_ADDR addr, bfd_byte *contents_cache)
+memory_insert_breakpoint (struct bp_target_info *bp_tgt)
{
- return MEMORY_INSERT_BREAKPOINT(addr, contents_cache);
+ return MEMORY_INSERT_BREAKPOINT (bp_tgt);
}
int
-memory_remove_breakpoint (CORE_ADDR addr, bfd_byte *contents_cache)
+memory_remove_breakpoint (struct bp_target_info *bp_tgt)
{
- return MEMORY_REMOVE_BREAKPOINT(addr, contents_cache);
+ return MEMORY_REMOVE_BREAKPOINT (bp_tgt);
}
void
mips_software_single_step (enum target_signal sig, int insert_breakpoints_p)
{
- static CORE_ADDR next_pc;
- typedef char binsn_quantum[BREAKPOINT_MAX];
- static binsn_quantum break_mem;
- CORE_ADDR pc;
+ CORE_ADDR pc, next_pc;
if (insert_breakpoints_p)
{
pc = read_register (mips_regnum (current_gdbarch)->pc);
next_pc = mips_next_pc (pc);
- target_insert_breakpoint (next_pc, break_mem);
+ insert_single_step_breakpoint (next_pc);
}
else
- target_remove_breakpoint (next_pc, break_mem);
+ remove_single_step_breakpoints ();
}
/* Test whether the PC points to the return instruction at the
struct mem_attrib *attrib,
struct target_ops *target);
static void monitor_files_info (struct target_ops *ops);
-static int monitor_insert_breakpoint (CORE_ADDR addr, gdb_byte *shadow);
-static int monitor_remove_breakpoint (CORE_ADDR addr, gdb_byte *shadow);
static void monitor_kill (void);
static void monitor_load (char *file, int from_tty);
static void monitor_mourn_inferior (void);
/* Tell the monitor to add a breakpoint. */
static int
-monitor_insert_breakpoint (CORE_ADDR addr, gdb_byte *shadow)
+monitor_insert_breakpoint (struct bp_target_info *bp_tgt)
{
+ CORE_ADDR addr = bp_tgt->placed_address;
int i;
const unsigned char *bp;
int bplen;
/* Determine appropriate breakpoint size for this address. */
bp = gdbarch_breakpoint_from_pc (current_gdbarch, &addr, &bplen);
+ bp_tgt->placed_address = addr;
+ bp_tgt->placed_size = bplen;
for (i = 0; i < current_monitor->num_breakpoints; i++)
{
if (breakaddr[i] == 0)
{
breakaddr[i] = addr;
- monitor_read_memory (addr, shadow, bplen);
monitor_printf (current_monitor->set_break, addr);
monitor_expect_prompt (NULL, 0);
return 0;
/* Tell the monitor to remove a breakpoint. */
static int
-monitor_remove_breakpoint (CORE_ADDR addr, gdb_byte *shadow)
+monitor_remove_breakpoint (struct bp_target_info *bp_tgt)
{
+ CORE_ADDR addr = bp_tgt->placed_address;
int i;
monitor_debug ("MON rmbkpt %s\n", paddr (addr));
if (current_monitor->clr_break == NULL)
error (_("No clr_break defined for this monitor"));
- if (current_monitor->flags & MO_ADDR_BITS_REMOVE)
- addr = ADDR_BITS_REMOVE (addr);
-
for (i = 0; i < current_monitor->num_breakpoints; i++)
{
if (breakaddr[i] == addr)
static int procfs_can_use_hw_breakpoint (int, int, int);
-static int procfs_insert_hw_breakpoint (CORE_ADDR, char *);
-
-static int procfs_remove_hw_breakpoint (CORE_ADDR addr, char *);
-
static int procfs_insert_hw_watchpoint (CORE_ADDR addr, int len, int type);
static int procfs_remove_hw_watchpoint (CORE_ADDR addr, int len, int type);
}
static int
-procfs_insert_breakpoint (CORE_ADDR addr, char *contents_cache)
+procfs_insert_breakpoint (struct bp_target_info *bp_tgt)
{
- return procfs_breakpoint (addr, _DEBUG_BREAK_EXEC, 0);
+ return procfs_breakpoint (bp_tgt->placed_address, _DEBUG_BREAK_EXEC, 0);
}
static int
-procfs_remove_breakpoint (CORE_ADDR addr, char *contents_cache)
+procfs_remove_breakpoint (struct bp_target_info *bp_tgt)
{
- return procfs_breakpoint (addr, _DEBUG_BREAK_EXEC, -1);
+ return procfs_breakpoint (bp_tgt->placed_address, _DEBUG_BREAK_EXEC, -1);
}
static int
-procfs_insert_hw_breakpoint (CORE_ADDR addr, char *contents_cache)
+procfs_insert_hw_breakpoint (struct bp_target_info *bp_tgt)
{
- return procfs_breakpoint (addr, _DEBUG_BREAK_EXEC | _DEBUG_BREAK_HW, 0);
+ return procfs_breakpoint (bp_tgt->placed_address,
+ _DEBUG_BREAK_EXEC | _DEBUG_BREAK_HW, 0);
}
static int
-procfs_remove_hw_breakpoint (CORE_ADDR addr, char *contents_cache)
+procfs_remove_hw_breakpoint (struct bp_target_info *bp_tgt)
{
- return procfs_breakpoint (addr, _DEBUG_BREAK_EXEC | _DEBUG_BREAK_HW, -1);
+ return procfs_breakpoint (bp_tgt->placed_address,
+ _DEBUG_BREAK_EXEC | _DEBUG_BREAK_HW, -1);
}
static void
/* BDM (at least on CPU32) uses a different breakpoint */
int
-ocd_insert_breakpoint (CORE_ADDR addr, char *contents_cache)
+ocd_insert_breakpoint (struct bp_target_info *bp_tgt)
{
static char break_insn[] = BDM_BREAKPOINT;
int val;
- val = target_read_memory (addr, contents_cache, sizeof (break_insn));
+ bp_tgt->placed_size = bp_tgt->shadow_len = sizeof (break_insn);
+ val = target_read_memory (bp_tgt->placed_address, bp_tgt->shadow_contents,
+ bp_tgt->placed_size);
if (val == 0)
- val = target_write_memory (addr, break_insn, sizeof (break_insn));
+ val = target_write_memory (bp_tgt->placed_address, break_insn,
+ bp_tgt->placed_size);
return val;
}
int
-ocd_remove_breakpoint (CORE_ADDR addr, char *contents_cache)
+ocd_remove_breakpoint (struct bp_target_info *bp_tgt)
{
- static char break_insn[] = BDM_BREAKPOINT;
- int val;
-
- val = target_write_memory (addr, contents_cache, sizeof (break_insn));
-
- return val;
+ return target_write_memory (bp_tgt->placed_address, bp_tgt->shadow_contents,
+ bp_tgt->placed_size);
}
static void
int ocd_wait (void);
-int ocd_insert_breakpoint (CORE_ADDR addr, char *contents_cache);
-int ocd_remove_breakpoint (CORE_ADDR addr, char *contents_cache);
+int ocd_insert_breakpoint (struct bp_target_info *bp_tgt);
+int ocd_remove_breakpoint (struct bp_target_info *bp_tgt);
int ocd_write_bytes (CORE_ADDR memaddr, char *myaddr, int len);
regard to removing breakpoints in some potentially self modifying
code. */
int
-ppc_linux_memory_remove_breakpoint (CORE_ADDR addr,
- gdb_byte *contents_cache)
+ppc_linux_memory_remove_breakpoint (struct bp_target_info *bp_tgt)
{
+ CORE_ADDR addr = bp_tgt->placed_address;
const unsigned char *bp;
int val;
int bplen;
program modified the code on us, so it is wrong to put back the
old value */
if (val == 0 && memcmp (bp, old_contents, bplen) == 0)
- val = target_write_memory (addr, contents_cache, bplen);
+ val = target_write_memory (addr, bp_tgt->shadow_contents, bplen);
return val;
}
CORE_ADDR struct_addr);
CORE_ADDR ppc64_sysv_abi_adjust_breakpoint_address (struct gdbarch *gdbarch,
CORE_ADDR bpaddr);
-int ppc_linux_memory_remove_breakpoint (CORE_ADDR addr,
- gdb_byte *contents_cache);
+int ppc_linux_memory_remove_breakpoint (struct bp_target_info *bp_tgt);
struct link_map_offsets *ppc_linux_svr4_fetch_link_map_offsets (void);
void ppc_linux_supply_gregset (struct regcache *regcache,
int regnum, const void *gregs, size_t size,
the address of the breakpoint, and the code that was replaced by
a breakpoint. */
static int dbx_link_bpt_addr = 0;
-static char dbx_link_shadow_contents[BREAKPOINT_MAX];
+static void *dbx_link_bpt;
/*
* Function: procfs_debug_inferior
destroy_procinfo (pi);
}
unpush_target (&procfs_ops);
+
+ if (dbx_link_bpt != NULL)
+ {
+ deprecated_remove_raw_breakpoint (dbx_link_bpt);
+ dbx_link_bpt_addr = 0;
+ dbx_link_bpt = NULL;
+ }
+
generic_mourn_inferior ();
}
has been inserted, the syssgi() notifications are no longer necessary,
so they should be canceled. */
proc_trace_syscalls_1 (pi, SYS_syssgi, PR_SYSEXIT, FLAG_SET, 0);
- dbx_link_bpt_addr = 0;
#endif
}
if (dbx_link_bpt_addr == 0)
return;
- if (memory_remove_breakpoint (dbx_link_bpt_addr,
- dbx_link_shadow_contents) != 0)
+ if (deprecated_remove_raw_breakpoint (dbx_link_bpt) != 0)
warning (_("Unable to remove __dbx_link breakpoint."));
dbx_link_bpt_addr = 0;
+ dbx_link_bpt = NULL;
}
/* Return the address of the __dbx_link() function in the file
{
/* Insert the breakpoint. */
dbx_link_bpt_addr = sym_addr;
- if (target_insert_breakpoint (sym_addr, dbx_link_shadow_contents) != 0)
+ dbx_link_bpt = deprecated_insert_raw_breakpoint (sym_addr);
+ if (dbx_link_bpt == NULL)
{
warning (_("Failed to insert dbx_link breakpoint."));
bfd_close (abfd);
{0};
static int
-e7000_insert_breakpoint (CORE_ADDR addr, bfd_byte *shadow)
+e7000_insert_breakpoint (struct bp_target_info *bp_tgt)
{
+ CORE_ADDR addr = bp_tgt->placed_address;
int i;
char buf[200];
#if 0
}
#else
#if 0
- e7000_read_inferior_memory (addr, shadow, 2);
+ bp_tgt->shadow_len = 2;
+ e7000_read_inferior_memory (addr, bp_tgt->shadow_contents, 2);
e7000_write_inferior_memory (addr, nop, 2);
#endif
}
static int
-e7000_remove_breakpoint (CORE_ADDR addr, bfd_byte *shadow)
+e7000_remove_breakpoint (struct bp_target_info *bp_tgt)
{
+ CORE_ADDR addr = bp_tgt->placed_address;
int i;
char buf[200];
#if 0
/* Replace the insn under the break */
- e7000_write_inferior_memory (addr, shadow, 2);
+ e7000_write_inferior_memory (addr, bp_tgt->shadow_contents,
+ bp_tgt->shadow_len);
#endif
#endif
}
static int
-m32r_insert_breakpoint (CORE_ADDR addr, bfd_byte *shadow)
+m32r_insert_breakpoint (struct bp_target_info *bp_tgt)
{
+ CORE_ADDR addr = bp_tgt->placed_address;
int ib_breakpoints;
unsigned char buf[13];
int i, c;
if (remote_debug)
- fprintf_unfiltered (gdb_stdlog, "m32r_insert_breakpoint(%08lx,\"%s\")\n",
- addr, shadow);
+ fprintf_unfiltered (gdb_stdlog, "m32r_insert_breakpoint(%08lx,...)\n",
+ addr);
if (use_ib_breakpoints)
ib_breakpoints = max_ib_breakpoints;
}
static int
-m32r_remove_breakpoint (CORE_ADDR addr, bfd_byte *shadow)
+m32r_remove_breakpoint (struct bp_target_info *bp_tgt)
{
+ CORE_ADDR addr = bp_tgt->placed_address;
int i;
if (remote_debug)
- fprintf_unfiltered (gdb_stdlog, "m32r_remove_breakpoint(%08lx,\"%s\")\n",
- addr, shadow);
+ fprintf_unfiltered (gdb_stdlog, "m32r_remove_breakpoint(%08lx)\n",
+ addr);
for (i = 0; i < MAX_BREAKPOINTS; i++)
{
/* Insert a breakpoint. On targets that don't have built-in
breakpoint support, we read the contents of the target location and
stash it, then overwrite it with a breakpoint instruction. ADDR is
- the target location in the target machine. CONTENTS_CACHE is a
- pointer to memory allocated for saving the target contents. It is
- guaranteed by the caller to be long enough to save the breakpoint
- length returned by BREAKPOINT_FROM_PC. */
+ the target location in the target machine. BPT is the breakpoint
+ being inserted or removed, which contains memory for saving the
+ target contents. */
static int
-mips_insert_breakpoint (CORE_ADDR addr, char *contents_cache)
+mips_insert_breakpoint (struct bp_target_info *bp_tgt)
{
if (monitor_supports_breakpoints)
- return set_breakpoint (addr, MIPS_INSN32_SIZE, BREAK_FETCH);
+ return set_breakpoint (bp_tgt->placed_address, MIPS_INSN32_SIZE,
+ BREAK_FETCH);
else
- return memory_insert_breakpoint (addr, contents_cache);
+ return memory_insert_breakpoint (bp_tgt);
}
static int
-mips_remove_breakpoint (CORE_ADDR addr, char *contents_cache)
+mips_remove_breakpoint (struct bp_target_info *bp_tgt)
{
if (monitor_supports_breakpoints)
- return clear_breakpoint (addr, MIPS_INSN32_SIZE, BREAK_FETCH);
+ return clear_breakpoint (bp_tgt->placed_address, MIPS_INSN32_SIZE,
+ BREAK_FETCH);
else
- return memory_remove_breakpoint (addr, contents_cache);
+ return memory_remove_breakpoint (bp_tgt);
}
/* Tell whether this target can support a hardware breakpoint. CNT
}
static int
-remote_rdp_insert_breakpoint (CORE_ADDR addr, bfd_byte *save)
+remote_rdp_insert_breakpoint (struct bp_target_info *bp_tgt)
{
+ CORE_ADDR addr = bp_tgt->placed_address;
+
int res;
if (ds.rdi_level > 0)
{
RDP_SET_BREAK,
addr,
RDP_SET_BREAK_TYPE_PC_EQUAL | RDP_SET_BREAK_TYPE_GET_HANDLE,
- save,
+ bp_tgt->shadow_contents,
&res);
}
else
}
static int
-remote_rdp_remove_breakpoint (CORE_ADDR addr, bfd_byte *save)
+remote_rdp_remove_breakpoint (struct bp_target_info *bp_tgt)
{
+ CORE_ADDR addr = bp_tgt->placed_address;
int res;
if (ds.rdi_level > 0)
{
send_rdp ("b-p-S-B",
RDP_CLEAR_BREAK,
- save, 4,
+ bp_tgt->shadow_contents, 4,
&res);
}
else
}
else
{
- char handle[4];
+ void *b;
CORE_ADDR pc = read_register (ARM_PC_REGNUM);
pc = arm_get_next_pc (pc);
- remote_rdp_insert_breakpoint (pc, handle);
+ b = deprecated_insert_raw_breakpoint (pc);
rdp_execute ();
- remote_rdp_remove_breakpoint (pc, handle);
+ deprecated_remove_raw_breakpoint (b);
}
}
static int read_frame (char *);
-static int sds_insert_breakpoint (CORE_ADDR, char *);
-
-static int sds_remove_breakpoint (CORE_ADDR, char *);
-
static void init_sds_ops (void);
static void sds_command (char *args, int from_tty);
replaced instruction back to the debugger. */
static int
-sds_insert_breakpoint (CORE_ADDR addr, char *contents_cache)
+sds_insert_breakpoint (struct bp_target_info *bp_tgt)
{
+ CORE_ADDR addr = bp_tgt->placed_address;
int i, retlen;
unsigned char *p, buf[PBUFSIZ];
retlen = sds_send (buf, p - buf);
for (i = 0; i < 4; ++i)
- contents_cache[i] = buf[i + 2];
+ bp_tgt->shadow_contents[i] = buf[i + 2];
return 0;
}
static int
-sds_remove_breakpoint (CORE_ADDR addr, char *contents_cache)
+sds_remove_breakpoint (struct bp_target_info *bp_tgt)
{
+ CORE_ADDR addr = bp_tgt->placed_address;
int i, retlen;
unsigned char *p, buf[PBUFSIZ];
*p++ = (int) (addr >> 8) & 0xff;
*p++ = (int) (addr) & 0xff;
for (i = 0; i < 4; ++i)
- *p++ = contents_cache[i];
+ *p++ = bp_tgt->shadow_contents[i];
retlen = sds_send (buf, p - buf);
generic_mourn_inferior ();
}
-static int
-gdbsim_insert_breakpoint (CORE_ADDR addr, bfd_byte *contents_cache)
-{
- return memory_insert_breakpoint (addr, contents_cache);
-}
-
-static int
-gdbsim_remove_breakpoint (CORE_ADDR addr, bfd_byte *contents_cache)
-{
- return memory_remove_breakpoint (addr, contents_cache);
-}
-
/* Pass the command argument through to the simulator verbatim. The
simulator must do any command interpretation work. */
gdbsim_ops.to_prepare_to_store = gdbsim_prepare_to_store;
gdbsim_ops.deprecated_xfer_memory = gdbsim_xfer_inferior_memory;
gdbsim_ops.to_files_info = gdbsim_files_info;
- gdbsim_ops.to_insert_breakpoint = gdbsim_insert_breakpoint;
- gdbsim_ops.to_remove_breakpoint = gdbsim_remove_breakpoint;
+ gdbsim_ops.to_insert_breakpoint = memory_insert_breakpoint;
+ gdbsim_ops.to_remove_breakpoint = memory_remove_breakpoint;
gdbsim_ops.to_kill = gdbsim_kill;
gdbsim_ops.to_load = gdbsim_load;
gdbsim_ops.to_create_inferior = gdbsim_create_inferior;
{0};
static int
-st2000_insert_breakpoint (CORE_ADDR addr, char *shadow)
+st2000_insert_breakpoint (struct bp_target_info *bp_tgt)
{
+ CORE_ADDR addr = bp_tgt->placed_address;
int i;
- CORE_ADDR bp_addr = addr;
- int bp_size = 0;
-
- BREAKPOINT_FROM_PC (&bp_addr, &bp_size);
for (i = 0; i <= MAX_STDEBUG_BREAKPOINTS; i++)
if (breakaddr[i] == 0)
{
breakaddr[i] = addr;
- st2000_read_inferior_memory (bp_addr, shadow, bp_size);
printf_stdebug ("BR %x H\r", addr);
expect_prompt (1);
return 0;
}
static int
-st2000_remove_breakpoint (CORE_ADDR addr, char *shadow)
+st2000_remove_breakpoint (struct bp_target_info *bp_tgt)
{
+ CORE_ADDR addr = bp_tgt->placed_address;
int i;
for (i = 0; i < MAX_STDEBUG_BREAKPOINTS; i++)
static long read_frame (char **buf_p, long *sizeof_buf);
-static int remote_insert_breakpoint (CORE_ADDR, bfd_byte *);
-
-static int remote_remove_breakpoint (CORE_ADDR, bfd_byte *);
-
static int hexnumlen (ULONGEST num);
static void init_remote_ops (void);
#endif /* DEPRECATED_REMOTE_BREAKPOINT */
-/* Insert a breakpoint on targets that don't have any better
- breakpoint support. We read the contents of the target location
- and stash it, then overwrite it with a breakpoint instruction.
- ADDR is the target location in the target machine. CONTENTS_CACHE
- is a pointer to memory allocated for saving the target contents.
- It is guaranteed by the caller to be long enough to save the number
- of bytes returned by BREAKPOINT_FROM_PC. */
+/* Insert a breakpoint. On targets that have software breakpoint
+ support, we ask the remote target to do the work; on targets
+ which don't, we insert a traditional memory breakpoint. */
static int
-remote_insert_breakpoint (CORE_ADDR addr, bfd_byte *contents_cache)
+remote_insert_breakpoint (struct bp_target_info *bp_tgt)
{
+ CORE_ADDR addr = bp_tgt->placed_address;
struct remote_state *rs = get_remote_state ();
#ifdef DEPRECATED_REMOTE_BREAKPOINT
int val;
#endif
- int bp_size;
/* Try the "Z" s/w breakpoint packet if it is not already disabled.
If it succeeds, then set the support to PACKET_ENABLE. If it
{
char *p = rs->buf;
- addr = remote_address_masked (addr);
*(p++) = 'Z';
*(p++) = '0';
*(p++) = ',';
- p += hexnumstr (p, (ULONGEST) addr);
- BREAKPOINT_FROM_PC (&addr, &bp_size);
- sprintf (p, ",%d", bp_size);
+ BREAKPOINT_FROM_PC (&bp_tgt->placed_address, &bp_tgt->placed_size);
+ addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address);
+ p += hexnumstr (p, addr);
+ sprintf (p, ",%d", bp_tgt->placed_size);
putpkt (rs->buf);
getpkt (&rs->buf, &rs->buf_size, 0);
}
#ifdef DEPRECATED_REMOTE_BREAKPOINT
- val = target_read_memory (addr, contents_cache, sizeof big_break_insn);
+ bp_tgt->placed_size = bp_tgt->shadow_len = sizeof big_break_insn;
+ val = target_read_memory (addr, bp_tgt->shadow_contents, bp_tgt->shadow_len);
if (val == 0)
{
return val;
#else
- return memory_insert_breakpoint (addr, contents_cache);
+ return memory_insert_breakpoint (bp_tgt);
#endif /* DEPRECATED_REMOTE_BREAKPOINT */
}
static int
-remote_remove_breakpoint (CORE_ADDR addr, bfd_byte *contents_cache)
+remote_remove_breakpoint (struct bp_target_info *bp_tgt)
{
+ CORE_ADDR addr = bp_tgt->placed_address;
struct remote_state *rs = get_remote_state ();
int bp_size;
*(p++) = '0';
*(p++) = ',';
- addr = remote_address_masked (addr);
- p += hexnumstr (p, (ULONGEST) addr);
- BREAKPOINT_FROM_PC (&addr, &bp_size);
- sprintf (p, ",%d", bp_size);
+ addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address);
+ p += hexnumstr (p, addr);
+ sprintf (p, ",%d", bp_tgt->placed_size);
putpkt (rs->buf);
getpkt (&rs->buf, &rs->buf_size, 0);
}
#ifdef DEPRECATED_REMOTE_BREAKPOINT
- return target_write_memory (addr, contents_cache, sizeof big_break_insn);
+ return target_write_memory (bp_tgt->placed_address, bp_tgt->shadow_contents,
+ bp_tgt->shadow_len);
#else
- return memory_remove_breakpoint (addr, contents_cache);
+ return memory_remove_breakpoint (bp_tgt);
#endif /* DEPRECATED_REMOTE_BREAKPOINT */
}
static int
-remote_insert_hw_breakpoint (CORE_ADDR addr, gdb_byte *shadow)
+remote_insert_hw_breakpoint (struct bp_target_info *bp_tgt)
{
- int len = 0;
+ CORE_ADDR addr;
struct remote_state *rs = get_remote_state ();
char *p = rs->buf;
/* The length field should be set to the size of a breakpoint
- instruction. */
+ instruction, even though we aren't inserting one ourselves. */
- BREAKPOINT_FROM_PC (&addr, &len);
+ BREAKPOINT_FROM_PC (&bp_tgt->placed_address, &bp_tgt->placed_size);
if (remote_protocol_packets[PACKET_Z1].support == PACKET_DISABLE)
error (_("Can't set hardware breakpoint without the '%s' (%s) packet."),
*(p++) = '1';
*(p++) = ',';
- addr = remote_address_masked (addr);
+ addr = remote_address_masked (bp_tgt->placed_address);
p += hexnumstr (p, (ULONGEST) addr);
- sprintf (p, ",%x", len);
+ sprintf (p, ",%x", bp_tgt->placed_size);
putpkt (rs->buf);
getpkt (&rs->buf, &rs->buf_size, 0);
static int
-remote_remove_hw_breakpoint (CORE_ADDR addr, gdb_byte *shadow)
+remote_remove_hw_breakpoint (struct bp_target_info *bp_tgt)
{
- int len;
+ CORE_ADDR addr;
struct remote_state *rs = get_remote_state ();
char *p = rs->buf;
- /* The length field should be set to the size of a breakpoint
- instruction. */
-
- BREAKPOINT_FROM_PC (&addr, &len);
-
if (remote_protocol_packets[PACKET_Z1].support == PACKET_DISABLE)
error (_("Can't clear hardware breakpoint without the '%s' (%s) packet."),
remote_protocol_packets[PACKET_Z1].name,
*(p++) = '1';
*(p++) = ',';
- addr = remote_address_masked (addr);
+ addr = remote_address_masked (bp_tgt->placed_address);
p += hexnumstr (p, (ULONGEST) addr);
- sprintf (p, ",%x", len);
+ sprintf (p, ",%x", bp_tgt->placed_size);
putpkt (rs->buf);
getpkt (&rs->buf, &rs->buf_size, 0);
{
#define DUMMY_INSN_ADDR (TEXT_SEGMENT_BASE)+0x200
- char shadow_contents[BREAKPOINT_MAX]; /* Stash old bkpt addr contents */
int ret, status, pid;
CORE_ADDR prev_pc;
+ void *bp;
/* We plant one dummy breakpoint into DUMMY_INSN_ADDR address. We
assume that this address will never be executed again by the real
code. */
- target_insert_breakpoint (DUMMY_INSN_ADDR, shadow_contents);
+ bp = deprecated_insert_raw_breakpoint (DUMMY_INSN_ADDR);
/* You might think this could be done with a single ptrace call, and
you'd be correct for just about every platform I've ever worked
while (pid != PIDGET (inferior_ptid));
write_pc (prev_pc);
- target_remove_breakpoint (DUMMY_INSN_ADDR, shadow_contents);
+ deprecated_remove_raw_breakpoint (bp);
}
/* Fetch registers from the register section in core bfd. */
register number. */
};
-/* Breakpoint shadows for the single step instructions will be kept here. */
-
-static struct sstep_breaks
-{
- /* Address, or 0 if this is not in use. */
- CORE_ADDR address;
- /* Shadow contents. */
- gdb_byte data[4];
-}
-stepBreaks[2];
-
/* Hook for determining the TOC address when calling functions in the
inferior under AIX. The initialization code in rs6000-nat.c sets
this hook to point to find_toc_address. */
if (insert_breakpoints_p)
{
-
loc = read_pc ();
insn = read_memory_integer (loc, 4);
if (breaks[1] == breaks[0])
breaks[1] = -1;
- stepBreaks[1].address = 0;
-
for (ii = 0; ii < 2; ++ii)
{
-
/* ignore invalid breakpoint. */
if (breaks[ii] == -1)
continue;
- target_insert_breakpoint (breaks[ii], stepBreaks[ii].data);
- stepBreaks[ii].address = breaks[ii];
+ insert_single_step_breakpoint (breaks[ii]);
}
-
}
else
- {
+ remove_single_step_breakpoints ();
- /* remove step breakpoints. */
- for (ii = 0; ii < 2; ++ii)
- if (stepBreaks[ii].address != 0)
- target_remove_breakpoint (stepBreaks[ii].address,
- stepBreaks[ii].data);
- }
errno = 0; /* FIXME, don't ignore errors! */
/* What errors? {read,write}_memory call error(). */
}
}
static int
-ignore (CORE_ADDR addr, gdb_byte *contents)
+ignore (struct bp_target_info *bp_tgt)
{
return 0;
}
/* The symbol which starts off the list of shared libraries. */
#define DEBUG_BASE "__rld_obj_head"
-char shadow_contents[BREAKPOINT_MAX]; /* Stash old bkpt addr contents */
+static void *base_breakpoint;
static CORE_ADDR debug_base; /* Base of dynamic linker structures */
-static CORE_ADDR breakpoint_addr; /* Address where end bkpt is set */
/*
/* Note that breakpoint address and original contents are in our address
space, so we just need to write the original contents back. */
- if (memory_remove_breakpoint (breakpoint_addr, shadow_contents) != 0)
+ if (deprecated_remove_raw_breakpoint (base_breakpoint) != 0)
{
status = 0;
}
+ base_breakpoint = NULL;
+
/* Note that it is possible that we have stopped at a location that
is different from the location where we inserted our breakpoint.
On mips-irix, we can actually land in __dbx_init(), so we should
static int
enable_break (void)
{
- if (symfile_objfile != NULL
- && target_insert_breakpoint (entry_point_address (),
- shadow_contents) == 0)
+ if (symfile_objfile != NULL)
{
- breakpoint_addr = entry_point_address ();
- return 1;
+ base_breakpoint
+ = deprecated_insert_raw_breakpoint (entry_point_address ());
+
+ if (base_breakpoint != NULL)
+ return 1;
}
return 0;
{
struct gdbarch *arch = current_gdbarch;
struct gdbarch_tdep *tdep = gdbarch_tdep (arch);
- static CORE_ADDR npc, nnpc;
- static gdb_byte npc_save[4], nnpc_save[4];
+ CORE_ADDR npc, nnpc;
if (insert_breakpoints_p)
{
/* Analyze the instruction at PC. */
nnpc = sparc_analyze_control_transfer (arch, pc, &npc);
if (npc != 0)
- target_insert_breakpoint (npc, npc_save);
+ insert_single_step_breakpoint (npc);
+
if (nnpc != 0)
- target_insert_breakpoint (nnpc, nnpc_save);
+ insert_single_step_breakpoint (nnpc);
/* Assert that we have set at least one breakpoint, and that
they're not set at the same spot - unless we're going
gdb_assert (nnpc != npc || orig_npc == 0);
}
else
- {
- if (npc != 0)
- target_remove_breakpoint (npc, npc_save);
- if (nnpc != 0)
- target_remove_breakpoint (nnpc, nnpc_save);
- }
+ remove_single_step_breakpoints ();
}
static void
static void debug_to_files_info (struct target_ops *);
-static int debug_to_insert_breakpoint (CORE_ADDR, gdb_byte *);
+static int debug_to_insert_breakpoint (struct bp_target_info *);
-static int debug_to_remove_breakpoint (CORE_ADDR, gdb_byte *);
+static int debug_to_remove_breakpoint (struct bp_target_info *);
static int debug_to_can_use_hw_breakpoint (int, int, int);
-static int debug_to_insert_hw_breakpoint (CORE_ADDR, gdb_byte *);
+static int debug_to_insert_hw_breakpoint (struct bp_target_info *);
-static int debug_to_remove_hw_breakpoint (CORE_ADDR, gdb_byte *);
+static int debug_to_remove_hw_breakpoint (struct bp_target_info *);
static int debug_to_insert_watchpoint (CORE_ADDR, int, int);
(int (*) (int, int, int))
return_zero);
de_fault (to_insert_hw_breakpoint,
- (int (*) (CORE_ADDR, gdb_byte *))
+ (int (*) (struct bp_target_info *))
return_minus_one);
de_fault (to_remove_hw_breakpoint,
- (int (*) (CORE_ADDR, gdb_byte *))
+ (int (*) (struct bp_target_info *))
return_minus_one);
de_fault (to_insert_watchpoint,
(int (*) (CORE_ADDR, int, int))
}
static int
-debug_to_insert_breakpoint (CORE_ADDR addr, gdb_byte *save)
+debug_to_insert_breakpoint (struct bp_target_info *bp_tgt)
{
int retval;
- retval = debug_target.to_insert_breakpoint (addr, save);
+ retval = debug_target.to_insert_breakpoint (bp_tgt);
fprintf_unfiltered (gdb_stdlog,
"target_insert_breakpoint (0x%lx, xxx) = %ld\n",
- (unsigned long) addr,
+ (unsigned long) bp_tgt->placed_address,
(unsigned long) retval);
return retval;
}
static int
-debug_to_remove_breakpoint (CORE_ADDR addr, gdb_byte *save)
+debug_to_remove_breakpoint (struct bp_target_info *bp_tgt)
{
int retval;
- retval = debug_target.to_remove_breakpoint (addr, save);
+ retval = debug_target.to_remove_breakpoint (bp_tgt);
fprintf_unfiltered (gdb_stdlog,
"target_remove_breakpoint (0x%lx, xxx) = %ld\n",
- (unsigned long) addr,
+ (unsigned long) bp_tgt->placed_address,
(unsigned long) retval);
return retval;
}
}
static int
-debug_to_insert_hw_breakpoint (CORE_ADDR addr, gdb_byte *save)
+debug_to_insert_hw_breakpoint (struct bp_target_info *bp_tgt)
{
int retval;
- retval = debug_target.to_insert_hw_breakpoint (addr, save);
+ retval = debug_target.to_insert_hw_breakpoint (bp_tgt);
fprintf_unfiltered (gdb_stdlog,
"target_insert_hw_breakpoint (0x%lx, xxx) = %ld\n",
- (unsigned long) addr,
+ (unsigned long) bp_tgt->placed_address,
(unsigned long) retval);
return retval;
}
static int
-debug_to_remove_hw_breakpoint (CORE_ADDR addr, gdb_byte *save)
+debug_to_remove_hw_breakpoint (struct bp_target_info *bp_tgt)
{
int retval;
- retval = debug_target.to_remove_hw_breakpoint (addr, save);
+ retval = debug_target.to_remove_hw_breakpoint (bp_tgt);
fprintf_unfiltered (gdb_stdlog,
"target_remove_hw_breakpoint (0x%lx, xxx) = %ld\n",
- (unsigned long) addr,
+ (unsigned long) bp_tgt->placed_address,
(unsigned long) retval);
return retval;
}
struct ui_file;
struct mem_attrib;
struct target_ops;
+struct bp_target_info;
/* This include file defines the interface between the main part
of the debugger, and the part which is target-specific, or
struct target_ops *target);
void (*to_files_info) (struct target_ops *);
- int (*to_insert_breakpoint) (CORE_ADDR, gdb_byte *);
- int (*to_remove_breakpoint) (CORE_ADDR, gdb_byte *);
+ int (*to_insert_breakpoint) (struct bp_target_info *);
+ int (*to_remove_breakpoint) (struct bp_target_info *);
int (*to_can_use_hw_breakpoint) (int, int, int);
- int (*to_insert_hw_breakpoint) (CORE_ADDR, gdb_byte *);
- int (*to_remove_hw_breakpoint) (CORE_ADDR, gdb_byte *);
+ int (*to_insert_hw_breakpoint) (struct bp_target_info *);
+ int (*to_remove_hw_breakpoint) (struct bp_target_info *);
int (*to_remove_watchpoint) (CORE_ADDR, int, int);
int (*to_insert_watchpoint) (CORE_ADDR, int, int);
int (*to_stopped_by_watchpoint) (void);
#define target_files_info() \
(*current_target.to_files_info) (¤t_target)
-/* Insert a breakpoint at address ADDR in the target machine. SAVE is
- a pointer to memory allocated for saving the target contents. It
- is guaranteed by the caller to be long enough to save the number of
- breakpoint bytes indicated by BREAKPOINT_FROM_PC. Result is 0 for
- success, or an errno value. */
+/* Insert a breakpoint at address BP_TGT->placed_address in the target
+ machine. Result is 0 for success, or an errno value. */
-#define target_insert_breakpoint(addr, save) \
- (*current_target.to_insert_breakpoint) (addr, save)
+#define target_insert_breakpoint(bp_tgt) \
+ (*current_target.to_insert_breakpoint) (bp_tgt)
-/* Remove a breakpoint at address ADDR in the target machine.
- SAVE is a pointer to the same save area
- that was previously passed to target_insert_breakpoint.
- Result is 0 for success, or an errno value. */
+/* Remove a breakpoint at address BP_TGT->placed_address in the target
+ machine. Result is 0 for success, or an errno value. */
-#define target_remove_breakpoint(addr, save) \
- (*current_target.to_remove_breakpoint) (addr, save)
+#define target_remove_breakpoint(bp_tgt) \
+ (*current_target.to_remove_breakpoint) (bp_tgt)
/* Initialize the terminal settings we record for the inferior,
before we actually run the inferior. */
#endif
#ifndef target_insert_hw_breakpoint
-#define target_insert_hw_breakpoint(addr, save) \
- (*current_target.to_insert_hw_breakpoint) (addr, save)
+#define target_insert_hw_breakpoint(bp_tgt) \
+ (*current_target.to_insert_hw_breakpoint) (bp_tgt)
-#define target_remove_hw_breakpoint(addr, save) \
- (*current_target.to_remove_hw_breakpoint) (addr, save)
+#define target_remove_hw_breakpoint(bp_tgt) \
+ (*current_target.to_remove_hw_breakpoint) (bp_tgt)
#endif
extern int target_stopped_data_address_p (struct target_ops *);
/* From mem-break.c */
-extern int memory_remove_breakpoint (CORE_ADDR, gdb_byte *);
+extern int memory_remove_breakpoint (struct bp_target_info *);
-extern int memory_insert_breakpoint (CORE_ADDR, gdb_byte *);
+extern int memory_insert_breakpoint (struct bp_target_info *);
-extern int default_memory_remove_breakpoint (CORE_ADDR, gdb_byte *);
+extern int default_memory_remove_breakpoint (struct bp_target_info *);
-extern int default_memory_insert_breakpoint (CORE_ADDR, gdb_byte *);
+extern int default_memory_insert_breakpoint (struct bp_target_info *);
/* From target.c */
int suspend_count;
int stepped; /* True if stepped. */
CORE_ADDR step_pc;
- unsigned long step_prev;
CONTEXT context;
}
thread_info;
{
if (th->stepped)
{
- memory_remove_breakpoint (th->step_pc, (void *) &th->step_prev);
+ remove_single_step_breakpoints ();
th->stepped = 0;
}
}
th->stepped = 1;
pc = read_register (PC_REGNUM);
th->step_pc = mips_next_pc (pc);
- th->step_prev = 0;
- memory_insert_breakpoint (th->step_pc, (void *) &th->step_prev);
+ insert_single_step_breakpoint (th->step_pc);
return;
}
#elif SHx
{
if (th->stepped)
{
- memory_remove_breakpoint (th->step_pc, (void *) &th->step_prev);
+ remove_single_step_breakpoints ();
th->stepped = 0;
}
return;
th->stepped = 1;
th->step_pc = sh_get_next_pc (&th->context);
- th->step_prev = 0;
- memory_insert_breakpoint (th->step_pc, (void *) &th->step_prev);
+ insert_single_step_breakpoint (th->step_pc);
return;
}
#elif defined (ARM)
{
if (th->stepped)
{
- memory_remove_breakpoint (th->step_pc, (void *) &th->step_prev);
+ remove_single_step_breakpoints ();
th->stepped = 0;
}
}
th->stepped = 1;
pc = read_register (PC_REGNUM);
th->step_pc = arm_get_next_pc (pc);
- th->step_prev = 0;
- memory_insert_breakpoint (th->step_pc, (void *) &th->step_prev);
+ insert_single_step_breakpoint (th->step_pc);
return;
}
#endif
projects / external / binutils.git / commitdiff