diff options
Diffstat (limited to 'gdb/hppa-hpux-tdep.c')
| -rw-r--r-- | gdb/hppa-hpux-tdep.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/gdb/hppa-hpux-tdep.c b/gdb/hppa-hpux-tdep.c index cd5c016..9aebb04 100644 --- a/gdb/hppa-hpux-tdep.c +++ b/gdb/hppa-hpux-tdep.c @@ -1471,6 +1471,44 @@ hppa_hpux_inferior_created (struct target_ops *objfile, int from_tty) hp_cxx_exception_support_initialized = 0; } +/* Given the current value of the pc, check to see if it is inside a stub, and + if so, change the value of the pc to point to the caller of the stub. + NEXT_FRAME is the next frame in the current list of frames. + BASE contains to stack frame base of the current frame. + SAVE_REGS is the register file stored in the frame cache. */ +static void +hppa_hpux_unwind_adjust_stub (struct frame_info *next_frame, CORE_ADDR base, + struct trad_frame_saved_reg *saved_regs) +{ + int optimized, realreg; + enum lval_type lval; + CORE_ADDR addr; + char buffer[sizeof(ULONGEST)]; + ULONGEST val; + CORE_ADDR stubpc; + struct unwind_table_entry *u; + + trad_frame_get_prev_register (next_frame, saved_regs, + HPPA_PCOQ_HEAD_REGNUM, + &optimized, &lval, &addr, &realreg, buffer); + val = extract_unsigned_integer (buffer, + register_size (get_frame_arch (next_frame), + HPPA_PCOQ_HEAD_REGNUM)); + + u = find_unwind_entry (val); + if (u && u->stub_unwind.stub_type == EXPORT) + { + stubpc = read_memory_integer (base - 24, TARGET_PTR_BIT / 8); + trad_frame_set_value (saved_regs, HPPA_PCOQ_HEAD_REGNUM, stubpc); + } + else if (hppa_symbol_address ("__gcc_plt_call") + == get_pc_function_start (val)) + { + stubpc = read_memory_integer (base - 8, TARGET_PTR_BIT / 8); + trad_frame_set_value (saved_regs, HPPA_PCOQ_HEAD_REGNUM, stubpc); + } +} + static void hppa_hpux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) { @@ -1481,6 +1519,8 @@ hppa_hpux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) else tdep->in_solib_call_trampoline = hppa64_hpux_in_solib_call_trampoline; + tdep->unwind_adjust_stub = hppa_hpux_unwind_adjust_stub; + set_gdbarch_in_solib_return_trampoline (gdbarch, hppa_hpux_in_solib_return_trampoline); set_gdbarch_skip_trampoline_code (gdbarch, hppa_hpux_skip_trampoline_code); |