diff options
Diffstat (limited to 'gdb/gdbarch_components.py')
| -rw-r--r-- | gdb/gdbarch_components.py | 22 |
1 files changed, 16 insertions, 6 deletions
diff --git a/gdb/gdbarch_components.py b/gdb/gdbarch_components.py index 52beaea..d30c537 100644 --- a/gdb/gdbarch_components.py +++ b/gdb/gdbarch_components.py @@ -1771,9 +1771,9 @@ gdbarch_software_single_step routine, and true otherwise. Method( comment=""" -Fix up the state resulting from successfully single-stepping a -displaced instruction, to give the result we would have gotten from -stepping the instruction in its original location. +Fix up the state after attempting to single-step a displaced +instruction, to give the result we would have gotten from stepping the +instruction in its original location. REGS is the register state resulting from single-stepping the displaced instruction. @@ -1781,9 +1781,18 @@ displaced instruction. CLOSURE is the result from the matching call to gdbarch_displaced_step_copy_insn. -If you provide gdbarch_displaced_step_copy_insn.but not this -function, then GDB assumes that no fixup is needed after -single-stepping the instruction. +FROM is the address where the instruction was original located, TO is +the address of the displaced buffer where the instruction was copied +to for stepping. + +COMPLETED_P is true if GDB stopped as a result of the requested step +having completed (e.g. the inferior stopped with SIGTRAP), otherwise +COMPLETED_P is false and GDB stopped for some other reason. In the +case where a single instruction is expanded to multiple replacement +instructions for stepping then it may be necessary to read the current +program counter from REGS in order to decide how far through the +series of replacement instructions the inferior got before stopping, +this may impact what will need fixing up in this function. For a general explanation of displaced stepping and how GDB uses it, see the comments in infrun.c. @@ -1795,6 +1804,7 @@ see the comments in infrun.c. ("CORE_ADDR", "from"), ("CORE_ADDR", "to"), ("struct regcache *", "regs"), + ("bool", "completed_p") ], predicate=False, predefault="NULL", |