diff options
Diffstat (limited to 'gdb/amd64-windows-tdep.c')
| -rw-r--r-- | gdb/amd64-windows-tdep.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/gdb/amd64-windows-tdep.c b/gdb/amd64-windows-tdep.c index 05d0824..0a44562 100644 --- a/gdb/amd64-windows-tdep.c +++ b/gdb/amd64-windows-tdep.c @@ -122,6 +122,38 @@ amd64_windows_return_value (struct gdbarch *gdbarch, struct type *func_type, } } +/* Check that the code pointed to by PC corresponds to a call to + __main, skip it if so. Return PC otherwise. */ + +static CORE_ADDR +amd64_skip_main_prologue (struct gdbarch *gdbarch, CORE_ADDR pc) +{ + enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); + gdb_byte op; + + target_read_memory (pc, &op, 1); + if (op == 0xe8) + { + gdb_byte buf[4]; + + if (target_read_memory (pc + 1, buf, sizeof buf) == 0) + { + struct minimal_symbol *s; + CORE_ADDR call_dest; + + call_dest = pc + 5 + extract_signed_integer (buf, 4, byte_order); + s = lookup_minimal_symbol_by_pc (call_dest); + if (s != NULL + && SYMBOL_LINKAGE_NAME (s) != NULL + && strcmp (SYMBOL_LINKAGE_NAME (s), "__main") == 0) + pc += 5; + } + } + + return pc; +} + + static void amd64_windows_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) { @@ -140,6 +172,7 @@ amd64_windows_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) tdep->memory_args_by_pointer = 1; tdep->integer_param_regs_saved_in_caller_frame = 1; set_gdbarch_return_value (gdbarch, amd64_windows_return_value); + set_gdbarch_skip_main_prologue (gdbarch, amd64_skip_main_prologue); set_solib_ops (gdbarch, &solib_target_so_ops); } |