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1 /* Target-dependent code for DICOS running on i386's, for GDB. | 1 /* Target-dependent code for DICOS running on i386's, for GDB. |
2 | 2 |
3 Copyright (C) 2008-2012 Free Software Foundation, Inc. | 3 Copyright (C) 2008-2012 Free Software Foundation, Inc. |
4 | 4 |
5 This file is part of GDB. | 5 This file is part of GDB. |
6 | 6 |
7 This program is free software; you can redistribute it and/or modify | 7 This program is free software; you can redistribute it and/or modify |
8 it under the terms of the GNU General Public License as published by | 8 it under the terms of the GNU General Public License as published by |
9 the Free Software Foundation; either version 3 of the License, or | 9 the Free Software Foundation; either version 3 of the License, or |
10 (at your option) any later version. | 10 (at your option) any later version. |
11 | 11 |
12 This program is distributed in the hope that it will be useful, | 12 This program is distributed in the hope that it will be useful, |
13 but WITHOUT ANY WARRANTY; without even the implied warranty of | 13 but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
15 GNU General Public License for more details. | 15 GNU General Public License for more details. |
16 | 16 |
17 You should have received a copy of the GNU General Public License | 17 You should have received a copy of the GNU General Public License |
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */ | 18 along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
19 | 19 |
20 #include "defs.h" | 20 #include "defs.h" |
21 #include "osabi.h" | 21 #include "osabi.h" |
22 #include "gdb_string.h" | 22 #include "gdb_string.h" |
23 #include "dicos-tdep.h" | 23 #include "dicos-tdep.h" |
24 | 24 |
25 static CORE_ADDR | |
26 i386_dicos_push_dummy_code (struct gdbarch *gdbarch, | |
27 CORE_ADDR sp, CORE_ADDR funaddr, | |
28 struct value **args, int nargs, | |
29 struct type *value_type, | |
30 CORE_ADDR *real_pc, CORE_ADDR *bp_addr, | |
31 struct regcache *regcache) | |
32 { | |
33 int bplen; | |
34 CORE_ADDR bppc = sp; | |
35 | |
36 gdbarch_breakpoint_from_pc (gdbarch, &bppc, &bplen); | |
37 *bp_addr = sp - bplen; | |
38 *real_pc = funaddr; | |
39 | |
40 return *bp_addr; | |
41 } | |
42 | |
43 static void | 25 static void |
44 i386_dicos_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) | 26 i386_dicos_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) |
45 { | 27 { |
46 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); | 28 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
47 | 29 |
48 dicos_init_abi (gdbarch); | 30 dicos_init_abi (gdbarch); |
49 | |
50 set_gdbarch_push_dummy_code (gdbarch, i386_dicos_push_dummy_code); | |
51 } | 31 } |
52 | 32 |
53 static enum gdb_osabi | 33 static enum gdb_osabi |
54 i386_dicos_osabi_sniffer (bfd *abfd) | 34 i386_dicos_osabi_sniffer (bfd *abfd) |
55 { | 35 { |
56 char *target_name = bfd_get_target (abfd); | 36 char *target_name = bfd_get_target (abfd); |
57 | 37 |
58 /* On x86-DICOS, the Load Module's "header" section is 36 bytes. */ | 38 /* On x86-DICOS, the Load Module's "header" section is 36 bytes. */ |
59 if (strcmp (target_name, "elf32-i386") == 0 | 39 if (strcmp (target_name, "elf32-i386") == 0 |
60 && dicos_load_module_p (abfd, 36)) | 40 && dicos_load_module_p (abfd, 36)) |
61 return GDB_OSABI_DICOS; | 41 return GDB_OSABI_DICOS; |
62 | 42 |
63 return GDB_OSABI_UNKNOWN; | 43 return GDB_OSABI_UNKNOWN; |
64 } | 44 } |
65 | 45 |
66 /* Provide a prototype to silence -Wmissing-prototypes. */ | 46 /* Provide a prototype to silence -Wmissing-prototypes. */ |
67 void _initialize_i386_dicos_tdep (void); | 47 void _initialize_i386_dicos_tdep (void); |
68 | 48 |
69 void | 49 void |
70 _initialize_i386_dicos_tdep (void) | 50 _initialize_i386_dicos_tdep (void) |
71 { | 51 { |
72 gdbarch_register_osabi_sniffer (bfd_arch_i386, bfd_target_elf_flavour, | 52 gdbarch_register_osabi_sniffer (bfd_arch_i386, bfd_target_elf_flavour, |
73 i386_dicos_osabi_sniffer); | 53 i386_dicos_osabi_sniffer); |
74 | 54 |
75 gdbarch_register_osabi (bfd_arch_i386, 0, GDB_OSABI_DICOS, | 55 gdbarch_register_osabi (bfd_arch_i386, 0, GDB_OSABI_DICOS, |
76 i386_dicos_init_abi); | 56 i386_dicos_init_abi); |
77 } | 57 } |
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