+2020-02-20 Tankut Baris Aktemur <tankut.baris.aktemur@intel.com>
+
+ Turn process_stratum_target's install_fast_tracepoint_jump_pad
+ and get_min_fast_tracepoint_insn_len ops into methods of
+ process_target.
+
+ * target.h (struct process_stratum_target): Remove the target ops.
+ (class process_target): Add the target ops. Also add
+ 'supports_fast_tracepoints'.
+ (target_supports_fast_tracepoints): Update the macro.
+ (target_get_min_fast_tracepoint_insn_len): Update the macro.
+ (install_fast_tracepoint_jump_pad): Update and rename the macro
+ to ...
+ (target_install_fast_tracepoint_jump_pad): ... this.
+ * target.cc (process_target::supports_fast_tracepoints): Define.
+ (process_target::install_fast_tracepoint_jump_pad): Define.
+ (process_target::get_min_fast_tracepoint_insn_len): Define.
+
+ Update the derived classes and callers below.
+
+ * tracepoint.cc (install_fast_tracepoint): Update.
+ * linux-low.cc (linux_target_ops): Update.
+ (linux_process_target::supports_fast_tracepoints): Define.
+ (linux_install_fast_tracepoint_jump_pad): Turn into ...
+ (linux_process_target::install_fast_tracepoint_jump_pad): ... this.
+ (linux_get_min_fast_tracepoint_insn_len): Turn into ...
+ (linux_process_target::get_min_fast_tracepoint_insn_len): ... this.
+ * linux-low.h (class linux_process_target): Update.
+ * lynx-low.cc (lynx_target_ops): Update.
+ * nto-low.cc (nto_target_ops): Update.
+ * win32-low.cc (win32_target_ops): Update.
+
2020-02-20 Tankut Baris Aktemur <tankut.baris.aktemur@intel.com>
Turn process_stratum_target's stabilize_threads op into a
target_unpause_all (true);
}
-static int
-linux_install_fast_tracepoint_jump_pad (CORE_ADDR tpoint, CORE_ADDR tpaddr,
- CORE_ADDR collector,
- CORE_ADDR lockaddr,
- ULONGEST orig_size,
- CORE_ADDR *jump_entry,
- CORE_ADDR *trampoline,
- ULONGEST *trampoline_size,
- unsigned char *jjump_pad_insn,
- ULONGEST *jjump_pad_insn_size,
- CORE_ADDR *adjusted_insn_addr,
- CORE_ADDR *adjusted_insn_addr_end,
- char *err)
+bool
+linux_process_target::supports_fast_tracepoints ()
+{
+ return the_low_target.install_fast_tracepoint_jump_pad != nullptr;
+}
+
+int
+linux_process_target::install_fast_tracepoint_jump_pad
+ (CORE_ADDR tpoint, CORE_ADDR tpaddr, CORE_ADDR collector,
+ CORE_ADDR lockaddr, ULONGEST orig_size, CORE_ADDR *jump_entry,
+ CORE_ADDR *trampoline, ULONGEST *trampoline_size,
+ unsigned char *jjump_pad_insn, ULONGEST *jjump_pad_insn_size,
+ CORE_ADDR *adjusted_insn_addr, CORE_ADDR *adjusted_insn_addr_end,
+ char *err)
{
return (*the_low_target.install_fast_tracepoint_jump_pad)
(tpoint, tpaddr, collector, lockaddr, orig_size,
return NULL;
}
-static int
-linux_get_min_fast_tracepoint_insn_len (void)
+int
+linux_process_target::get_min_fast_tracepoint_insn_len ()
{
return (*the_low_target.get_min_fast_tracepoint_insn_len) ();
}
static linux_process_target the_linux_target;
static process_stratum_target linux_target_ops = {
- linux_install_fast_tracepoint_jump_pad,
linux_emit_ops,
linux_supports_disable_randomization,
- linux_get_min_fast_tracepoint_insn_len,
linux_qxfer_libraries_svr4,
linux_supports_agent,
#ifdef HAVE_LINUX_BTRACE
void unpause_all (bool unfreeze) override;
void stabilize_threads () override;
+
+ bool supports_fast_tracepoints () override;
+
+ int install_fast_tracepoint_jump_pad (CORE_ADDR tpoint,
+ CORE_ADDR tpaddr,
+ CORE_ADDR collector,
+ CORE_ADDR lockaddr,
+ ULONGEST orig_size,
+ CORE_ADDR *jump_entry,
+ CORE_ADDR *trampoline,
+ ULONGEST *trampoline_size,
+ unsigned char *jjump_pad_insn,
+ ULONGEST *jjump_pad_insn_size,
+ CORE_ADDR *adjusted_insn_addr,
+ CORE_ADDR *adjusted_insn_addr_end,
+ char *err) override;
+
+ int get_min_fast_tracepoint_insn_len () override;
};
#define get_thread_lwp(thr) ((struct lwp_info *) (thread_target_data (thr)))
/* The LynxOS target_ops vector. */
static process_stratum_target lynx_target_ops = {
- NULL, /* install_fast_tracepoint_jump_pad */
NULL, /* emit_ops */
NULL, /* supports_disable_randomization */
- NULL, /* get_min_fast_tracepoint_insn_len */
NULL, /* qxfer_libraries_svr4 */
NULL, /* support_agent */
NULL, /* enable_btrace */
static nto_process_target the_nto_target;
static process_stratum_target nto_target_ops = {
- NULL, /* install_fast_tracepoint_jump_pad */
NULL, /* emit_ops */
NULL, /* supports_disable_randomization */
- NULL, /* get_min_fast_tracepoint_insn_len */
NULL, /* qxfer_libraries_svr4 */
NULL, /* support_agent */
NULL, /* enable_btrace */
{
/* Nop. */
}
+
+bool
+process_target::supports_fast_tracepoints ()
+{
+ return false;
+}
+
+int
+process_target::install_fast_tracepoint_jump_pad
+ (CORE_ADDR tpoint, CORE_ADDR tpaddr, CORE_ADDR collector,
+ CORE_ADDR lockaddr, ULONGEST orig_size, CORE_ADDR *jump_entry,
+ CORE_ADDR *trampoline, ULONGEST *trampoline_size,
+ unsigned char *jjump_pad_insn, ULONGEST *jjump_pad_insn_size,
+ CORE_ADDR *adjusted_insn_addr, CORE_ADDR *adjusted_insn_addr_end,
+ char *err)
+{
+ gdb_assert_not_reached ("target op install_fast_tracepoint_jump_pad "
+ "not supported");
+}
+
+int
+process_target::get_min_fast_tracepoint_insn_len ()
+{
+ return 0;
+}
shared code. */
struct process_stratum_target
{
- /* Install a fast tracepoint jump pad. TPOINT is the address of the
- tracepoint internal object as used by the IPA agent. TPADDR is
- the address of tracepoint. COLLECTOR is address of the function
- the jump pad redirects to. LOCKADDR is the address of the jump
- pad lock object. ORIG_SIZE is the size in bytes of the
- instruction at TPADDR. JUMP_ENTRY points to the address of the
- jump pad entry, and on return holds the address past the end of
- the created jump pad. If a trampoline is created by the function,
- then TRAMPOLINE and TRAMPOLINE_SIZE return the address and size of
- the trampoline, else they remain unchanged. JJUMP_PAD_INSN is a
- buffer containing a copy of the instruction at TPADDR.
- ADJUST_INSN_ADDR and ADJUST_INSN_ADDR_END are output parameters that
- return the address range where the instruction at TPADDR was relocated
- to. If an error occurs, the ERR may be used to pass on an error
- message. */
- int (*install_fast_tracepoint_jump_pad) (CORE_ADDR tpoint, CORE_ADDR tpaddr,
- CORE_ADDR collector,
- CORE_ADDR lockaddr,
- ULONGEST orig_size,
- CORE_ADDR *jump_entry,
- CORE_ADDR *trampoline,
- ULONGEST *trampoline_size,
- unsigned char *jjump_pad_insn,
- ULONGEST *jjump_pad_insn_size,
- CORE_ADDR *adjusted_insn_addr,
- CORE_ADDR *adjusted_insn_addr_end,
- char *err);
-
/* Return the bytecode operations vector for the current inferior.
Returns NULL if bytecode compilation is not supported. */
struct emit_ops *(*emit_ops) (void);
/* Returns true if the target supports disabling randomization. */
int (*supports_disable_randomization) (void);
- /* Return the minimum length of an instruction that can be safely overwritten
- for use as a fast tracepoint. */
- int (*get_min_fast_tracepoint_insn_len) (void);
-
/* Read solib info on SVR4 platforms. */
int (*qxfer_libraries_svr4) (const char *annex, unsigned char *readbuf,
unsigned const char *writebuf,
/* Stabilize all threads. That is, force them out of jump pads. */
virtual void stabilize_threads ();
+
+ /* Return true if the install_fast_tracepoint_jump_pad op is
+ supported. */
+ virtual bool supports_fast_tracepoints ();
+
+ /* Install a fast tracepoint jump pad. TPOINT is the address of the
+ tracepoint internal object as used by the IPA agent. TPADDR is
+ the address of tracepoint. COLLECTOR is address of the function
+ the jump pad redirects to. LOCKADDR is the address of the jump
+ pad lock object. ORIG_SIZE is the size in bytes of the
+ instruction at TPADDR. JUMP_ENTRY points to the address of the
+ jump pad entry, and on return holds the address past the end of
+ the created jump pad. If a trampoline is created by the function,
+ then TRAMPOLINE and TRAMPOLINE_SIZE return the address and size of
+ the trampoline, else they remain unchanged. JJUMP_PAD_INSN is a
+ buffer containing a copy of the instruction at TPADDR.
+ ADJUST_INSN_ADDR and ADJUST_INSN_ADDR_END are output parameters that
+ return the address range where the instruction at TPADDR was relocated
+ to. If an error occurs, the ERR may be used to pass on an error
+ message. */
+ virtual int install_fast_tracepoint_jump_pad
+ (CORE_ADDR tpoint, CORE_ADDR tpaddr, CORE_ADDR collector,
+ CORE_ADDR lockaddr, ULONGEST orig_size, CORE_ADDR *jump_entry,
+ CORE_ADDR *trampoline, ULONGEST *trampoline_size,
+ unsigned char *jjump_pad_insn, ULONGEST *jjump_pad_insn_size,
+ CORE_ADDR *adjusted_insn_addr, CORE_ADDR *adjusted_insn_addr_end,
+ char *err);
+
+ /* Return the minimum length of an instruction that can be safely
+ overwritten for use as a fast tracepoint. */
+ virtual int get_min_fast_tracepoint_insn_len ();
};
extern process_stratum_target *the_target;
the_target->pt->supports_tracepoints ()
#define target_supports_fast_tracepoints() \
- (the_target->install_fast_tracepoint_jump_pad != NULL)
+ the_target->pt->supports_fast_tracepoints ()
#define target_get_min_fast_tracepoint_insn_len() \
- (the_target->get_min_fast_tracepoint_insn_len \
- ? (*the_target->get_min_fast_tracepoint_insn_len) () : 0)
+ the_target->pt->get_min_fast_tracepoint_insn_len ()
#define target_thread_stopped(thread) \
the_target->pt->thread_stopped (thread)
#define target_stabilize_threads() \
the_target->pt->stabilize_threads ()
-#define install_fast_tracepoint_jump_pad(tpoint, tpaddr, \
- collector, lockaddr, \
- orig_size, \
- jump_entry, \
- trampoline, trampoline_size, \
- jjump_pad_insn, \
- jjump_pad_insn_size, \
- adjusted_insn_addr, \
- adjusted_insn_addr_end, \
- err) \
- (*the_target->install_fast_tracepoint_jump_pad) (tpoint, tpaddr, \
- collector,lockaddr, \
- orig_size, jump_entry, \
- trampoline, \
- trampoline_size, \
- jjump_pad_insn, \
- jjump_pad_insn_size, \
- adjusted_insn_addr, \
- adjusted_insn_addr_end, \
- err)
+#define target_install_fast_tracepoint_jump_pad(tpoint, tpaddr, \
+ collector, lockaddr, \
+ orig_size, \
+ jump_entry, \
+ trampoline, trampoline_size, \
+ jjump_pad_insn, \
+ jjump_pad_insn_size, \
+ adjusted_insn_addr, \
+ adjusted_insn_addr_end, \
+ err) \
+ the_target->pt->install_fast_tracepoint_jump_pad (tpoint, tpaddr, \
+ collector,lockaddr, \
+ orig_size, jump_entry, \
+ trampoline, \
+ trampoline_size, \
+ jjump_pad_insn, \
+ jjump_pad_insn_size, \
+ adjusted_insn_addr, \
+ adjusted_insn_addr_end, \
+ err)
#define target_emit_ops() \
(the_target->emit_ops ? (*the_target->emit_ops) () : NULL)
trampoline_size = 0;
/* Install the jump pad. */
- err = install_fast_tracepoint_jump_pad (tpoint->obj_addr_on_target,
- tpoint->address,
- collect,
- ipa_sym_addrs.addr_collecting,
- tpoint->orig_size,
- &jentry,
- &trampoline, &trampoline_size,
- fjump, &fjump_size,
- &tpoint->adjusted_insn_addr,
- &tpoint->adjusted_insn_addr_end,
- errbuf);
+ err = target_install_fast_tracepoint_jump_pad
+ (tpoint->obj_addr_on_target, tpoint->address, collect,
+ ipa_sym_addrs.addr_collecting, tpoint->orig_size, &jentry,
+ &trampoline, &trampoline_size, fjump, &fjump_size,
+ &tpoint->adjusted_insn_addr, &tpoint->adjusted_insn_addr_end, errbuf);
if (err)
return 1;
static win32_process_target the_win32_target;
static process_stratum_target win32_target_ops = {
- NULL, /* install_fast_tracepoint_jump_pad */
NULL, /* emit_ops */
NULL, /* supports_disable_randomization */
- NULL, /* get_min_fast_tracepoint_insn_len */
NULL, /* qxfer_libraries_svr4 */
NULL, /* support_agent */
NULL, /* enable_btrace */
projects / binutils-gdb.git / commitdiff