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1 /* Architecture-dependent code for the Fujitsu FR-V, for GDB, the GNU Debugger.
2 Copyright (C) 2004, 2007 Free Software Foundation, Inc.
3
4 This file is part of GDB.
5
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 51 Franklin Street, Fifth Floor,
19 Boston, MA 02110-1301, USA. */
20
21 /* Enumerate the possible ABIs for FR-V. */
22 enum frv_abi
23 {
24 FRV_ABI_EABI,
25 FRV_ABI_FDPIC
26 };
27
28 /* Register numbers. The order in which these appear define the
29 remote protocol, so take care in changing them. */
30 enum {
31 /* Register numbers 0 -- 63 are always reserved for general-purpose
32 registers. The chip at hand may have less. */
33 first_gpr_regnum = 0,
34 sp_regnum = 1,
35 fp_regnum = 2,
36 struct_return_regnum = 3,
37 last_gpr_regnum = 63,
38
39 /* Register numbers 64 -- 127 are always reserved for floating-point
40 registers. The chip at hand may have less. */
41 first_fpr_regnum = 64,
42 last_fpr_regnum = 127,
43
44 /* The PC register. */
45 pc_regnum = 128,
46
47 /* Register numbers 129 on up are always reserved for special-purpose
48 registers. */
49 first_spr_regnum = 129,
50 psr_regnum = 129,
51 ccr_regnum = 130,
52 cccr_regnum = 131,
53 fdpic_loadmap_exec_regnum = 132,
54 fdpic_loadmap_interp_regnum = 133,
55 tbr_regnum = 135,
56 brr_regnum = 136,
57 dbar0_regnum = 137,
58 dbar1_regnum = 138,
59 dbar2_regnum = 139,
60 dbar3_regnum = 140,
61 scr0_regnum = 141,
62 scr1_regnum = 142,
63 scr2_regnum = 143,
64 scr3_regnum = 144,
65 lr_regnum = 145,
66 lcr_regnum = 146,
67 iacc0h_regnum = 147,
68 iacc0l_regnum = 148,
69 fsr0_regnum = 149,
70 acc0_regnum = 150,
71 acc7_regnum = 157,
72 accg0123_regnum = 158,
73 accg4567_regnum = 159,
74 msr0_regnum = 160,
75 msr1_regnum = 161,
76 gner0_regnum = 162,
77 gner1_regnum = 163,
78 fner0_regnum = 164,
79 fner1_regnum = 165,
80 last_spr_regnum = 165,
81
82 /* The total number of registers we know exist. */
83 frv_num_regs = last_spr_regnum + 1,
84
85 /* Pseudo registers */
86 first_pseudo_regnum = frv_num_regs,
87
88 /* iacc0 - the 64-bit concatenation of iacc0h and iacc0l. */
89 iacc0_regnum = first_pseudo_regnum + 0,
90 accg0_regnum = first_pseudo_regnum + 1,
91 accg7_regnum = accg0_regnum + 7,
92
93 last_pseudo_regnum = accg7_regnum,
94 frv_num_pseudo_regs = last_pseudo_regnum - first_pseudo_regnum + 1,
95 };
96
97 /* Return the FR-V ABI associated with GDBARCH. */
98 enum frv_abi frv_abi (struct gdbarch *gdbarch);
99
100 /* Fetch the interpreter and executable loadmap addresses (for shared
101 library support) for the FDPIC ABI. Return 0 if successful, -1 if
102 not. (E.g, -1 will be returned if the ABI isn't the FDPIC ABI.) */
103 int frv_fdpic_loadmap_addresses (struct gdbarch *gdbarch,
104 CORE_ADDR *interp_addr, CORE_ADDR *exec_addr);
105
106 /* Given a function entry point, find and return the GOT address for the
107 containing load module. */
108 CORE_ADDR frv_fdpic_find_global_pointer (CORE_ADDR addr);
109
110 /* Given a function entry point, find and return the canonical descriptor
111 for that function, if one exists. If no canonical descriptor could
112 be found, return 0. */
113 CORE_ADDR frv_fdpic_find_canonical_descriptor (CORE_ADDR entry_point);
114
115
116 /* Given an objfile, return the address of its link map. This value is
117 needed for TLS support. */
118 CORE_ADDR frv_fetch_objfile_link_map (struct objfile *objfile);