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gdb: add interp::on_memory_changed method

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Same idea as previous patches, but for memory_changed.

Change-Id: Ic19f20c24d8a6431d4a89c5625e8ef4898f76e82
This commit is contained in:
Simon Marchi 2023-04-21 09:45:30 -04:00
parent 3d654fa72d
commit ec517d1040
5 changed files with 57 additions and 43 deletions
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13
gdb/corefile.c
View File

@ -33,6 +33,7 @@
#include "observable.h"
#include "cli/cli-utils.h"
#include "gdbarch.h"
#include "interps.h"
/* You can have any number of hooks for `exec_file_command' command to
call. If there's only one hook, it is set in exec_file_display
@ -353,6 +354,16 @@ write_memory (CORE_ADDR memaddr,
memory_error (TARGET_XFER_E_IO, memaddr);
}
/* Notify interpreters and observers that INF's memory was changed. */
static void
notify_memory_changed (inferior *inf, CORE_ADDR addr, ssize_t len,
const bfd_byte *data)
{
interps_notify_memory_changed (inf, addr, len, data);
gdb::observers::memory_changed.notify (inf, addr, len, data);
}
/* Same as write_memory, but notify 'memory_changed' observers. */
void
@ -360,7 +371,7 @@ write_memory_with_notification (CORE_ADDR memaddr, const bfd_byte *myaddr,
ssize_t len)
{
write_memory (memaddr, myaddr, len);
gdb::observers::memory_changed.notify (current_inferior (), memaddr, len, myaddr);
notify_memory_changed (current_inferior (), memaddr, len, myaddr);
}
/* Store VALUE at ADDR in the inferior as a LEN-byte unsigned

9
gdb/interps.c
View File

@ -591,6 +591,15 @@ interps_notify_param_changed (const char *param, const char *value)
interps_notify (&interp::on_param_changed, param, value);
}
/* See interps.h. */
void
interps_notify_memory_changed (inferior *inf, CORE_ADDR addr, ssize_t len,
const bfd_byte *data)
{
interps_notify (&interp::on_memory_changed, inf, addr, len, data);
}
/* This just adds the "interpreter-exec" command. */
void _initialize_interpreter ();
void

8
gdb/interps.h
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@ -178,6 +178,10 @@ class interp : public intrusive_list_node<interp>
/* Notify the interpreter that parameter PARAM changed to VALUE. */
virtual void on_param_changed (const char *param, const char *value) {}
/* Notify the interpreter that inferior INF's memory was changed. */
virtual void on_memory_changed (inferior *inf, CORE_ADDR addr, ssize_t len,
const bfd_byte *data) {}
private:
/* The memory for this is static, it comes from literal strings (e.g. "cli"). */
const char *m_name;
@ -359,6 +363,10 @@ extern void interps_notify_breakpoint_modified (breakpoint *b);
/* Notify all interpreters that parameter PARAM changed to VALUE. */
extern void interps_notify_param_changed (const char *param, const char *value);
/* Notify all interpreters that inferior INF's memory was changed. */
extern void interps_notify_memory_changed (inferior *inf, CORE_ADDR addr,
ssize_t len, const bfd_byte *data);
/* well-known interpreters */
#define INTERP_CONSOLE "console"
#define INTERP_MI2 "mi2"

68
gdb/mi/mi-interp.c
View File

@ -60,9 +60,6 @@ static int mi_interp_query_hook (const char *ctlstr, va_list ap)
static void mi_insert_notify_hooks (void);
static void mi_remove_notify_hooks (void);
static void mi_memory_changed (struct inferior *inf, CORE_ADDR memaddr,
ssize_t len, const bfd_byte *myaddr);
/* Display the MI prompt. */
static void
@ -813,50 +810,39 @@ mi_interp::on_param_changed (const char *param, const char *value)
gdb_flush (this->event_channel);
}
/* Emit notification about the target memory change. */
static void
mi_memory_changed (struct inferior *inferior, CORE_ADDR memaddr,
ssize_t len, const bfd_byte *myaddr)
void
mi_interp::on_memory_changed (inferior *inferior, CORE_ADDR memaddr,
ssize_t len, const bfd_byte *myaddr)
{
if (mi_suppress_notification.memory)
return;
SWITCH_THRU_ALL_UIS ()
ui_out *mi_uiout = this->interp_ui_out ();
target_terminal::scoped_restore_terminal_state term_state;
target_terminal::ours_for_output ();
gdb_printf (this->event_channel, "memory-changed");
ui_out_redirect_pop redir (mi_uiout, this->event_channel);
mi_uiout->field_fmt ("thread-group", "i%d", inferior->num);
mi_uiout->field_core_addr ("addr", target_gdbarch (), memaddr);
mi_uiout->field_string ("len", hex_string (len));
/* Append 'type=code' into notification if MEMADDR falls in the range of
sections contain code. */
obj_section *sec = find_pc_section (memaddr);
if (sec != nullptr && sec->objfile != nullptr)
{
struct mi_interp *mi = as_mi_interp (top_level_interpreter ());
struct ui_out *mi_uiout;
struct obj_section *sec;
flagword flags = bfd_section_flags (sec->the_bfd_section);
if (mi == NULL)
continue;
mi_uiout = top_level_interpreter ()->interp_ui_out ();
target_terminal::scoped_restore_terminal_state term_state;
target_terminal::ours_for_output ();
gdb_printf (mi->event_channel, "memory-changed");
ui_out_redirect_pop redir (mi_uiout, mi->event_channel);
mi_uiout->field_fmt ("thread-group", "i%d", inferior->num);
mi_uiout->field_core_addr ("addr", target_gdbarch (), memaddr);
mi_uiout->field_string ("len", hex_string (len));
/* Append 'type=code' into notification if MEMADDR falls in the range of
sections contain code. */
sec = find_pc_section (memaddr);
if (sec != NULL && sec->objfile != NULL)
{
flagword flags = bfd_section_flags (sec->the_bfd_section);
if (flags & SEC_CODE)
mi_uiout->field_string ("type", "code");
}
gdb_flush (mi->event_channel);
if (flags & SEC_CODE)
mi_uiout->field_string ("type", "code");
}
gdb_flush (this->event_channel);
}
void
@ -960,6 +946,4 @@ _initialize_mi_interp ()
interp_factory_register (INTERP_MI3, mi_interp_factory);
interp_factory_register (INTERP_MI4, mi_interp_factory);
interp_factory_register (INTERP_MI, mi_interp_factory);
gdb::observers::memory_changed.attach (mi_memory_changed, "mi-interp");
}

2
gdb/mi/mi-interp.h
View File

@ -70,6 +70,8 @@ class mi_interp final : public interp
void on_breakpoint_deleted (breakpoint *b) override;
void on_breakpoint_modified (breakpoint *b) override;
void on_param_changed (const char *param, const char *value) override;
void on_memory_changed (inferior *inf, CORE_ADDR addr, ssize_t len,
const bfd_byte *data) override;
/* MI's output channels */
mi_console_file *out;