diff options
Diffstat (limited to 'gdb/gdbserver/target.h')
| -rw-r--r-- | gdb/gdbserver/target.h | 38 |
1 files changed, 29 insertions, 9 deletions
diff --git a/gdb/gdbserver/target.h b/gdb/gdbserver/target.h index f60e0a601d3..8a254769837 100644 --- a/gdb/gdbserver/target.h +++ b/gdb/gdbserver/target.h @@ -359,20 +359,26 @@ struct target_ops 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. 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. */ + 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); + 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. */ @@ -380,6 +386,10 @@ struct target_ops /* 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); }; extern struct target_ops *the_target; @@ -437,6 +447,10 @@ void set_target_ops (struct target_ops *); #define target_supports_fast_tracepoints() \ (the_target->install_fast_tracepoint_jump_pad != NULL) +#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) + #define thread_stopped(thread) \ (*the_target->thread_stopped) (thread) @@ -471,17 +485,23 @@ void set_target_ops (struct target_ops *); #define install_fast_tracepoint_jump_pad(tpoint, tpaddr, \ collector, lockaddr, \ orig_size, \ - jump_entry, jjump_pad_insn, \ + jump_entry, \ + trampoline, trampoline_size, \ + jjump_pad_insn, \ jjump_pad_insn_size, \ adjusted_insn_addr, \ - adjusted_insn_addr_end) \ + 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) + adjusted_insn_addr_end, \ + err) #define target_emit_ops() \ (the_target->emit_ops ? (*the_target->emit_ops) () : NULL) |