diff options
Diffstat (limited to 'gdb/i386-tdep.c')
| -rw-r--r-- | gdb/i386-tdep.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/gdb/i386-tdep.c b/gdb/i386-tdep.c index 00a01bd..41c565d 100644 --- a/gdb/i386-tdep.c +++ b/gdb/i386-tdep.c @@ -787,6 +787,19 @@ i386_push_dummy_frame (void) write_register (FP_REGNUM, fp); } +/* The i386 call dummy sequence: + + call 11223344 (32-bit relative) + int 3 + + It is 8 bytes long. */ + +static LONGEST i386_call_dummy_words[] = +{ + 0x223344e8, + 0xcc11 +}; + /* Insert the (relative) function address into the call sequence stored at DYMMY. */ @@ -1407,16 +1420,27 @@ i386_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches) /* Call dummy code. */ set_gdbarch_call_dummy_location (gdbarch, ON_STACK); + set_gdbarch_call_dummy_start_offset (gdbarch, 0); set_gdbarch_call_dummy_breakpoint_offset (gdbarch, 5); set_gdbarch_call_dummy_breakpoint_offset_p (gdbarch, 1); + set_gdbarch_call_dummy_length (gdbarch, 8); set_gdbarch_call_dummy_p (gdbarch, 1); + set_gdbarch_call_dummy_words (gdbarch, i386_call_dummy_words); + set_gdbarch_sizeof_call_dummy_words (gdbarch, + sizeof (i386_call_dummy_words)); set_gdbarch_call_dummy_stack_adjust_p (gdbarch, 0); + set_gdbarch_fix_call_dummy (gdbarch, i386_fix_call_dummy); set_gdbarch_get_saved_register (gdbarch, generic_get_saved_register); set_gdbarch_push_arguments (gdbarch, i386_push_arguments); set_gdbarch_pc_in_call_dummy (gdbarch, pc_in_call_dummy_on_stack); + /* "An argument's size is increased, if necessary, to make it a + multiple of [32-bit] words. This may require tail padding, + depending on the size of the argument" -- from the x86 ABI. */ + set_gdbarch_parm_boundary (gdbarch, 32); + set_gdbarch_deprecated_extract_return_value (gdbarch, i386_extract_return_value); set_gdbarch_push_arguments (gdbarch, i386_push_arguments); |