| /* Data structures and functions associated with agent expressions in GDB. |
| Copyright (C) 2009-2024 Free Software Foundation, Inc. |
| |
| This file is part of GDB. |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 3 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| |
| #ifndef GDBSERVER_AX_H |
| #define GDBSERVER_AX_H |
| |
| #include "regcache.h" |
| |
| #ifdef IN_PROCESS_AGENT |
| #include "gdbsupport/agent.h" |
| #define debug_threads debug_agent |
| #endif |
| |
| struct traceframe; |
| |
| /* Enumeration of the different kinds of things that can happen during |
| agent expression evaluation. */ |
| |
| enum eval_result_type |
| { |
| #define AX_RESULT_TYPE(ENUM,STR) ENUM, |
| #include "ax-result-types.def" |
| #undef AX_RESULT_TYPE |
| }; |
| |
| struct agent_expr |
| { |
| int length; |
| |
| unsigned char *bytes; |
| }; |
| |
| #ifndef IN_PROCESS_AGENT |
| |
| /* The packet form of an agent expression consists of an 'X', number |
| of bytes in expression, a comma, and then the bytes. */ |
| struct agent_expr *gdb_parse_agent_expr (const char **actparm); |
| |
| /* Release an agent expression. */ |
| void gdb_free_agent_expr (struct agent_expr *aexpr); |
| |
| /* Convert the bytes of an agent expression back into hex digits, so |
| they can be printed or uploaded. This allocates the buffer, |
| callers should free when they are done with it. */ |
| char *gdb_unparse_agent_expr (struct agent_expr *aexpr); |
| void emit_prologue (void); |
| void emit_epilogue (void); |
| enum eval_result_type compile_bytecodes (struct agent_expr *aexpr); |
| #endif |
| |
| /* The context when evaluating agent expression. */ |
| |
| struct eval_agent_expr_context |
| { |
| /* The registers when evaluating agent expression. */ |
| struct regcache *regcache; |
| /* The traceframe, if any, when evaluating agent expression. */ |
| struct traceframe *tframe; |
| /* The tracepoint, if any, when evaluating agent expression. */ |
| struct tracepoint *tpoint; |
| }; |
| |
| enum eval_result_type |
| gdb_eval_agent_expr (struct eval_agent_expr_context *ctx, |
| struct agent_expr *aexpr, |
| ULONGEST *rslt); |
| |
| /* Bytecode compilation function vector. */ |
| |
| struct emit_ops |
| { |
| void (*emit_prologue) (void); |
| void (*emit_epilogue) (void); |
| void (*emit_add) (void); |
| void (*emit_sub) (void); |
| void (*emit_mul) (void); |
| void (*emit_lsh) (void); |
| void (*emit_rsh_signed) (void); |
| void (*emit_rsh_unsigned) (void); |
| void (*emit_ext) (int arg); |
| void (*emit_log_not) (void); |
| void (*emit_bit_and) (void); |
| void (*emit_bit_or) (void); |
| void (*emit_bit_xor) (void); |
| void (*emit_bit_not) (void); |
| void (*emit_equal) (void); |
| void (*emit_less_signed) (void); |
| void (*emit_less_unsigned) (void); |
| void (*emit_ref) (int size); |
| void (*emit_if_goto) (int *offset_p, int *size_p); |
| void (*emit_goto) (int *offset_p, int *size_p); |
| void (*write_goto_address) (CORE_ADDR from, CORE_ADDR to, int size); |
| void (*emit_const) (LONGEST num); |
| void (*emit_call) (CORE_ADDR fn); |
| void (*emit_reg) (int reg); |
| void (*emit_pop) (void); |
| void (*emit_stack_flush) (void); |
| void (*emit_zero_ext) (int arg); |
| void (*emit_swap) (void); |
| void (*emit_stack_adjust) (int n); |
| |
| /* Emit code for a generic function that takes one fixed integer |
| argument and returns a 64-bit int (for instance, tsv getter). */ |
| void (*emit_int_call_1) (CORE_ADDR fn, int arg1); |
| |
| /* Emit code for a generic function that takes one fixed integer |
| argument and a 64-bit int from the top of the stack, and returns |
| nothing (for instance, tsv setter). */ |
| void (*emit_void_call_2) (CORE_ADDR fn, int arg1); |
| |
| /* Emit code specialized for common combinations of compare followed |
| by a goto. */ |
| void (*emit_eq_goto) (int *offset_p, int *size_p); |
| void (*emit_ne_goto) (int *offset_p, int *size_p); |
| void (*emit_lt_goto) (int *offset_p, int *size_p); |
| void (*emit_le_goto) (int *offset_p, int *size_p); |
| void (*emit_gt_goto) (int *offset_p, int *size_p); |
| void (*emit_ge_goto) (int *offset_p, int *size_p); |
| }; |
| |
| extern CORE_ADDR current_insn_ptr; |
| extern int emit_error; |
| |
| #endif /* GDBSERVER_AX_H */ |