[PATCH 13/58] gdbserver: turn prepare_to_access_memory & done_accessing_memory into methods
Tankut Baris Aktemur
tankut.baris.aktemur@intel.com
Tue Feb 11 09:03:00 GMT 2020
gdbserver/ChangeLog:
2020-02-10 Tankut Baris Aktemur <tankut.baris.aktemur@intel.com>
Make process_stratum_target's prepare_to_access_memory and
done_accessing_memory ops methods of process_target.
* target.h (struct process_stratum_target): Remove the target ops.
(class process_target): Add the target ops.
* target.c (process_target::prepare_to_access_memory): Define.
(process_target::done_accessing_memory): Define.
(prepare_to_access_memory): Update.
(done_accessing_memory): Update.
Update the derived structs and callers below.
* linux-low.c (linux_target_ops): Update.
(linux_prepare_to_access_memory): Turn into ...
(linux_process_target::prepare_to_access_memory): ... this.
(linux_done_accessing_memory): Turn into ...
(linux_process_target::done_accessing_memory): ... this.
* linux-low.h (class linux_process_target): Update.
* lynx-low.c (lynx_target_ops): Update.
* nto-low.c (nto_target_ops): Update.
* win32-low.c (win32_target_ops): Update.
---
gdbserver/linux-low.c | 10 ++++------
gdbserver/linux-low.h | 4 ++++
gdbserver/lynx-low.c | 2 --
gdbserver/nto-low.c | 2 --
gdbserver/target.c | 26 ++++++++++++++++----------
gdbserver/target.h | 32 +++++++++++++++-----------------
gdbserver/win32-low.c | 2 --
7 files changed, 39 insertions(+), 39 deletions(-)
diff --git a/gdbserver/linux-low.c b/gdbserver/linux-low.c
index 9514cffb589..1d05e1b9ff0 100644
--- a/gdbserver/linux-low.c
+++ b/gdbserver/linux-low.c
@@ -6505,8 +6505,8 @@ linux_unpause_all (int unfreeze)
unstop_all_lwps (unfreeze, NULL);
}
-static int
-linux_prepare_to_access_memory (void)
+int
+linux_process_target::prepare_to_access_memory ()
{
/* Neither ptrace nor /proc/PID/mem allow accessing memory through a
running LWP. */
@@ -6515,8 +6515,8 @@ linux_prepare_to_access_memory (void)
return 0;
}
-static void
-linux_done_accessing_memory (void)
+void
+linux_process_target::done_accessing_memory ()
{
/* Neither ptrace nor /proc/PID/mem allow accessing memory through a
running LWP. */
@@ -7359,8 +7359,6 @@ linux_get_hwcap2 (int wordsize)
static linux_process_target the_linux_target;
static process_stratum_target linux_target_ops = {
- linux_prepare_to_access_memory,
- linux_done_accessing_memory,
linux_read_memory,
linux_write_memory,
linux_look_up_symbols,
diff --git a/gdbserver/linux-low.h b/gdbserver/linux-low.h
index e361f29877c..51622f6d211 100644
--- a/gdbserver/linux-low.h
+++ b/gdbserver/linux-low.h
@@ -294,6 +294,10 @@ public:
void fetch_registers (regcache *regcache, int regno) override;
void store_registers (regcache *regcache, int regno) override;
+
+ int prepare_to_access_memory () override;
+
+ void done_accessing_memory () override;
};
#define get_thread_lwp(thr) ((struct lwp_info *) (thread_target_data (thr)))
diff --git a/gdbserver/lynx-low.c b/gdbserver/lynx-low.c
index c27c1182415..365f82b55ce 100644
--- a/gdbserver/lynx-low.c
+++ b/gdbserver/lynx-low.c
@@ -727,8 +727,6 @@ static lynx_process_target the_lynx_target;
/* The LynxOS target_ops vector. */
static process_stratum_target lynx_target_ops = {
- NULL, /* prepare_to_access_memory */
- NULL, /* done_accessing_memory */
lynx_read_memory,
lynx_write_memory,
NULL, /* look_up_symbols */
diff --git a/gdbserver/nto-low.c b/gdbserver/nto-low.c
index 7dce2fa9cb5..2e75225b01e 100644
--- a/gdbserver/nto-low.c
+++ b/gdbserver/nto-low.c
@@ -941,8 +941,6 @@ nto_sw_breakpoint_from_kind (int kind, int *size)
static nto_process_target the_nto_target;
static process_stratum_target nto_target_ops = {
- NULL, /* prepare_to_access_memory */
- NULL, /* done_accessing_memory */
nto_read_memory,
nto_write_memory,
NULL, /* nto_look_up_symbols */
diff --git a/gdbserver/target.c b/gdbserver/target.c
index b73c4465f1c..f88e9faf191 100644
--- a/gdbserver/target.c
+++ b/gdbserver/target.c
@@ -57,14 +57,9 @@ prepare_to_access_memory (void)
it. */
prev_general_thread = cs.general_thread;
- if (the_target->prepare_to_access_memory != NULL)
- {
- int res;
-
- res = the_target->prepare_to_access_memory ();
- if (res != 0)
- return res;
- }
+ int res = the_target->pt->prepare_to_access_memory ();
+ if (res != 0)
+ return res;
for_each_thread (prev_general_thread.pid (), [&] (thread_info *thread)
{
@@ -114,8 +109,7 @@ done_accessing_memory (void)
{
client_state &cs = get_client_state ();
- if (the_target->done_accessing_memory != NULL)
- the_target->done_accessing_memory ();
+ the_target->pt->done_accessing_memory ();
/* Restore the previous selected thread. */
cs.general_thread = prev_general_thread;
@@ -402,3 +396,15 @@ process_target::post_create_inferior ()
{
/* Nop. */
}
+
+int
+process_target::prepare_to_access_memory ()
+{
+ return 0;
+}
+
+void
+process_target::done_accessing_memory ()
+{
+ /* Nop. */
+}
diff --git a/gdbserver/target.h b/gdbserver/target.h
index 41f1fc2e27d..16ff5ab6baa 100644
--- a/gdbserver/target.h
+++ b/gdbserver/target.h
@@ -70,23 +70,6 @@ class process_target;
shared code. */
struct process_stratum_target
{
- /* Prepare to read or write memory from the inferior process.
- Targets use this to do what is necessary to get the state of the
- inferior such that it is possible to access memory.
-
- This should generally only be called from client facing routines,
- such as gdb_read_memory/gdb_write_memory, or the GDB breakpoint
- insertion routine.
-
- Like `read_memory' and `write_memory' below, returns 0 on success
- and errno on failure. */
-
- int (*prepare_to_access_memory) (void);
-
- /* Undo the effects of prepare_to_access_memory. */
-
- void (*done_accessing_memory) (void);
-
/* Read memory from the inferior process. This should generally be
called through read_inferior_memory, which handles breakpoint shadowing.
@@ -479,6 +462,21 @@ public:
If REGNO is -1, store all registers; otherwise, store at least REGNO. */
virtual void store_registers (regcache *regcache, int regno) = 0;
+
+ /* Prepare to read or write memory from the inferior process.
+ Targets use this to do what is necessary to get the state of the
+ inferior such that it is possible to access memory.
+
+ This should generally only be called from client facing routines,
+ such as gdb_read_memory/gdb_write_memory, or the GDB breakpoint
+ insertion routine.
+
+ Like `read_memory' and `write_memory' below, returns 0 on success
+ and errno on failure. */
+ virtual int prepare_to_access_memory ();
+
+ /* Undo the effects of prepare_to_access_memory. */
+ virtual void done_accessing_memory ();
};
extern process_stratum_target *the_target;
diff --git a/gdbserver/win32-low.c b/gdbserver/win32-low.c
index 1774c22ca9b..6639401b1ae 100644
--- a/gdbserver/win32-low.c
+++ b/gdbserver/win32-low.c
@@ -1827,8 +1827,6 @@ win32_sw_breakpoint_from_kind (int kind, int *size)
static win32_process_target the_win32_target;
static process_stratum_target win32_target_ops = {
- NULL, /* prepare_to_access_memory */
- NULL, /* done_accessing_memory */
win32_read_inferior_memory,
win32_write_inferior_memory,
NULL, /* lookup_symbols */
--
2.17.1
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