2012-03-03 11:08:36 +08:00
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/* Shared utility routines for GDB to interact with agent.
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2017-01-01 14:50:51 +08:00
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Copyright (C) 2009-2017 Free Software Foundation, Inc.
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2012-03-03 11:08:36 +08:00
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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2017-06-22 17:57:13 +08:00
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#ifndef COMMON_AGENT_H
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#define COMMON_AGENT_H
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2017-06-22 17:23:30 +08:00
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#include "common/preprocessor.h"
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2012-04-16 19:24:47 +08:00
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int agent_run_command (int pid, const char *cmd, int len);
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2012-03-03 11:08:36 +08:00
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2012-03-03 17:51:29 +08:00
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int agent_look_up_symbols (void *);
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2012-03-03 11:08:36 +08:00
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Make functions and variables exported by the IPA be extern "C"
Functions and variables that are exported by the IPA DSO (that
GDBserver needs to look up) should have "C" mangling, thus be declared
with extern "C".
Function and variable declarations need the extern "C" marker, but
variable definitions can't be marked extern, so the patch splits
IP_AGENT_EXPORT into three.
Building in C++ mode revealed that a few variables were missing
IP_AGENT_EXPORT, thus the IPA has been broken when stripped, even in C
mode... So this ends being a bug fix as well.
gdb/ChangeLog:
2015-02-27 Pedro Alves <palves@redhat.com>
* common/agent.h (IPA_SYM_EXPORTED_NAME): New.
(IPA_SYM): Use it.
* common/common-defs.h (EXTERN_C_PUSH, EXTERN_C_POP): New macros.
gdb/gdbserver/ChangeLog:
2015-02-27 Pedro Alves <palves@redhat.com>
* linux-amd64-ipa.c (gdb_agent_get_raw_reg): Use
IP_AGENT_EXPORT_FUNC.
* linux-i386-ipa.c (gdb_agent_get_raw_reg): Use
IP_AGENT_EXPORT_FUNC.
* tracepoint.c (ATTR_USED, ATTR_NOINLINE, ATTR_CONSTRUCTOR)
(IP_AGENT_EXPORT): Delete.
(gdb_tp_heap_buffer, gdb_jump_pad_buffer, gdb_jump_pad_buffer_end)
(gdb_trampoline_buffer, gdb_trampoline_buffer_end)
(gdb_trampoline_buffer_error, collecting, gdb_collect)
(stop_tracing, flush_trace_buffer, about_to_request_buffer_space)
(trace_buffer_is_full, stopping_tracepoint, expr_eval_result)
(error_tracepoint, tracepoints, tracing, trace_buffer_ctrl)
(trace_buffer_ctrl_curr, trace_buffer_lo, trace_buffer_hi)
(traceframe_read_count, traceframe_write_count)
(traceframes_created, trace_state_variables, get_raw_reg)
(get_trace_state_variable_value, set_trace_state_variable_value)
(ust_loaded, helper_thread_id, cmd_buf): Use
IPA_SYM_EXPORTED_NAME.
(stop_tracing, flush_trace_buffer): Use IP_AGENT_EXPORT_FUNC.
(tracepoints) Use IP_AGENT_EXPORT_VAR.
(stopping_tracepoint, trace_buffer_is_full, expr_eval_result): Use
IP_AGENT_EXPORT_VAR and wrap in EXTERN_C_PUSH/EXTERN_C_POP.
(last_tracepoint): Move into !IN_PROCESS_AGENT block.
(error_tracepoint): Use IP_AGENT_EXPORT_VAR and wrap in
EXTERN_C_PUSH/EXTERN_C_POP.
(trace_state_variables): Use IP_AGENT_EXPORT_VAR.
(trace_buffer_lo, trace_buffer_hi): Use IP_AGENT_EXPORT_VAR and
wrap in EXTERN_C_PUSH/EXTERN_C_POP.
(trace_buffer_ctrl, trace_buffer_ctrl_curr)
(traceframe_write_count, traceframe_read_count)
(traceframes_created, tracing): Use IP_AGENT_EXPORT_VAR.
(about_to_request_buffer_space, get_trace_state_variable_value)
(set_trace_state_variable_value): Use IP_AGENT_EXPORT_FUNC.
(collecting): Use IP_AGENT_EXPORT_VAR and wrap in
EXTERN_C_PUSH/EXTERN_C_POP.
(gdb_collect): Use IP_AGENT_EXPORT_FUNC.
(ust_loaded, cmd_buf): Use IP_AGENT_EXPORT_VAR.
(helper_thread_id, gdb_agent_capability): Use IP_AGENT_EXPORT_VAR
and wrap in EXTERN_C_PUSH/EXTERN_C_POP.
(gdb_tp_heap_buffer, gdb_jump_pad_buffer, gdb_jump_pad_buffer_end)
(gdb_trampoline_buffer, gdb_trampoline_buffer_end)
(gdb_trampoline_buffer_error): Use IP_AGENT_EXPORT_VAR.
* tracepoint.h (ATTR_USED, ATTR_NOINLINE, EXPORTED_SYMBOL):
Define.
(IP_AGENT_EXPORT_FUNC, IP_AGENT_EXPORT_VAR)
(IP_AGENT_EXPORT_VAR_DECL): Define.
(tracing): Declare.
(gdb_agent_get_raw_reg): Declare.
2015-02-09 22:59:08 +08:00
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#define IPA_SYM_EXPORTED_NAME(SYM) gdb_agent_ ## SYM
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2012-03-03 11:08:36 +08:00
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#define IPA_SYM(SYM) \
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{ \
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2017-06-22 17:23:30 +08:00
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STRINGIFY (IPA_SYM_EXPORTED_NAME (SYM)), \
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2012-03-03 11:08:36 +08:00
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offsetof (struct ipa_sym_addresses, addr_ ## SYM) \
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}
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/* The size in bytes of the buffer used to talk to the IPA helper
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thread. */
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#define IPA_CMD_BUF_SIZE 1024
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2012-03-03 12:34:52 +08:00
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int agent_loaded_p (void);
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2012-03-03 11:08:36 +08:00
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extern int debug_agent;
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2012-03-03 11:32:46 +08:00
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extern int use_agent;
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2012-03-03 12:04:35 +08:00
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/* Capability of agent. Different agents may have different capabilities,
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such as installing fast tracepoint or evaluating breakpoint conditions.
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Capabilities are represented by bit-maps, and each capability occupies one
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bit. */
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enum agent_capa
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{
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/* Capability to install fast tracepoint. */
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AGENT_CAPA_FAST_TRACE = 0x1,
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/* Capability to install static tracepoint. */
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AGENT_CAPA_STATIC_TRACE = (0x1 << 1),
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};
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int agent_capability_check (enum agent_capa);
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void agent_capability_invalidate (void);
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2017-06-22 17:57:13 +08:00
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#endif /* COMMON_AGENT_H */
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