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4c38e0a4 | 1 | /* Copyright (C) 2009, 2010 Free Software Foundation, Inc. |
d0761299 JB |
2 | |
3 | This file is part of GDB. | |
4 | ||
5 | This program is free software; you can redistribute it and/or modify | |
6 | it under the terms of the GNU General Public License as published by | |
7 | the Free Software Foundation; either version 3 of the License, or | |
8 | (at your option) any later version. | |
9 | ||
10 | This program is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | GNU General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU General Public License | |
16 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
17 | ||
18 | #include "defs.h" | |
19 | #include "osabi.h" | |
20 | #include "amd64-tdep.h" | |
21 | #include "solib.h" | |
22 | #include "solib-target.h" | |
ba581dc1 JB |
23 | #include "gdbtypes.h" |
24 | ||
25 | /* The registers used to pass integer arguments during a function call. */ | |
26 | static int amd64_windows_dummy_call_integer_regs[] = | |
27 | { | |
28 | AMD64_RCX_REGNUM, /* %rcx */ | |
29 | AMD64_RDX_REGNUM, /* %rdx */ | |
30 | 8, /* %r8 */ | |
31 | 9 /* %r9 */ | |
32 | }; | |
33 | ||
34 | /* Implement the "classify" method in the gdbarch_tdep structure | |
35 | for amd64-windows. */ | |
36 | ||
37 | static void | |
38 | amd64_windows_classify (struct type *type, enum amd64_reg_class class[2]) | |
39 | { | |
40 | switch (TYPE_CODE (type)) | |
41 | { | |
42 | case TYPE_CODE_ARRAY: | |
43 | /* Arrays are always passed by memory. */ | |
44 | class[0] = class[1] = AMD64_MEMORY; | |
45 | break; | |
46 | ||
47 | case TYPE_CODE_STRUCT: | |
48 | case TYPE_CODE_UNION: | |
49 | /* Struct/Union types whose size is 1, 2, 4, or 8 bytes | |
50 | are passed as if they were integers of the same size. | |
51 | Types of different sizes are passed by memory. */ | |
52 | if (TYPE_LENGTH (type) == 1 | |
53 | || TYPE_LENGTH (type) == 2 | |
54 | || TYPE_LENGTH (type) == 4 | |
55 | || TYPE_LENGTH (type) == 8) | |
56 | { | |
57 | class[0] = AMD64_INTEGER; | |
58 | class[1] = AMD64_NO_CLASS; | |
59 | } | |
60 | else | |
61 | class[0] = class[1] = AMD64_MEMORY; | |
62 | break; | |
63 | ||
64 | default: | |
65 | /* For all the other types, the conventions are the same as | |
66 | with the System V ABI. */ | |
67 | amd64_classify (type, class); | |
68 | } | |
69 | } | |
d0761299 JB |
70 | |
71 | static void | |
72 | amd64_windows_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) | |
73 | { | |
ba581dc1 JB |
74 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
75 | ||
d0761299 JB |
76 | amd64_init_abi (info, gdbarch); |
77 | ||
78 | /* On Windows, "long"s are only 32bit. */ | |
79 | set_gdbarch_long_bit (gdbarch, 32); | |
80 | ||
ba581dc1 JB |
81 | /* Function calls. */ |
82 | tdep->call_dummy_num_integer_regs = | |
83 | ARRAY_SIZE (amd64_windows_dummy_call_integer_regs); | |
84 | tdep->call_dummy_integer_regs = amd64_windows_dummy_call_integer_regs; | |
85 | tdep->classify = amd64_windows_classify; | |
86 | ||
d0761299 JB |
87 | set_solib_ops (gdbarch, &solib_target_so_ops); |
88 | } | |
89 | ||
90 | void | |
91 | _initialize_amd64_windows_tdep (void) | |
92 | { | |
93 | gdbarch_register_osabi (bfd_arch_i386, bfd_mach_x86_64, GDB_OSABI_CYGWIN, | |
94 | amd64_windows_init_abi); | |
95 | } | |
96 |