diff options
Diffstat (limited to 'gdb/aarch64-tdep.c')
| -rw-r--r-- | gdb/aarch64-tdep.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/gdb/aarch64-tdep.c b/gdb/aarch64-tdep.c index 3f3a652..b714f61 100644 --- a/gdb/aarch64-tdep.c +++ b/gdb/aarch64-tdep.c @@ -3396,6 +3396,25 @@ aarch64_cannot_store_register (struct gdbarch *gdbarch, int regnum) || regnum == AARCH64_PAUTH_CMASK_REGNUM (tdep->pauth_reg_base)); } +/* Implement the stack_frame_destroyed_p gdbarch method. */ + +static int +aarch64_stack_frame_destroyed_p (struct gdbarch *gdbarch, CORE_ADDR pc) +{ + CORE_ADDR func_start, func_end; + if (!find_pc_partial_function (pc, NULL, &func_start, &func_end)) + return 0; + + enum bfd_endian byte_order_for_code = gdbarch_byte_order_for_code (gdbarch); + uint32_t insn = read_memory_unsigned_integer (pc, 4, byte_order_for_code); + + aarch64_inst inst; + if (aarch64_decode_insn (insn, &inst, 1, nullptr) != 0) + return 0; + + return streq (inst.opcode->name, "ret"); +} + /* Initialize the current architecture based on INFO. If possible, re-use an architecture from ARCHES, which is a list of architectures already created during this debugging session. @@ -3602,6 +3621,9 @@ aarch64_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches) set_gdbarch_long_double_format (gdbarch, floatformats_ia64_quad); set_gdbarch_type_align (gdbarch, aarch64_type_align); + /* Detect whether PC is at a point where the stack has been destroyed. */ + set_gdbarch_stack_frame_destroyed_p (gdbarch, aarch64_stack_frame_destroyed_p); + /* Internal <-> external register number maps. */ set_gdbarch_dwarf2_reg_to_regnum (gdbarch, aarch64_dwarf_reg_to_regnum); |