1/* libunwind - a platform-independent unwind library
2   Copyright (C) 2008 CodeSourcery
3   Copyright (C) 2014 Tilera Corp.
4
5This file is part of libunwind.
6
7Permission is hereby granted, free of charge, to any person obtaining
8a copy of this software and associated documentation files (the
9"Software"), to deal in the Software without restriction, including
10without limitation the rights to use, copy, modify, merge, publish,
11distribute, sublicense, and/or sell copies of the Software, and to
12permit persons to whom the Software is furnished to do so, subject to
13the following conditions:
14
15The above copyright notice and this permission notice shall be
16included in all copies or substantial portions of the Software.
17
18THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
19EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
21NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
22LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
23OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
24WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.  */
25
26#ifndef LIBUNWIND_H
27#define LIBUNWIND_H
28
29#if defined(__cplusplus) || defined(c_plusplus)
30extern "C" {
31#endif
32
33#include <inttypes.h>
34#include <ucontext.h>
35
36#define UNW_TARGET           tilegx
37#define UNW_TARGET_TILEGX    1
38
39#define _U_TDEP_QP_TRUE        0    /* see libunwind-dynamic.h  */
40
41/* This needs to be big enough to accommodate "struct cursor", while
42   leaving some slack for future expansion.  Changing this value will
43   require recompiling all users of this library.  Stack allocation is
44   relatively cheap and unwind-state copying is relatively rare, so we
45   want to err on making it rather too big than too small.  */
46
47#define UNW_TDEP_CURSOR_LEN   4096
48
49/* The size of a "word" varies on TILEGX.  This type is used for memory
50   addresses and register values. */
51typedef uint64_t unw_word_t;
52typedef int64_t unw_sword_t;
53
54typedef long double unw_tdep_fpreg_t;
55
56typedef enum
57{
58  UNW_TILEGX_R0,
59  UNW_TILEGX_R1,
60  UNW_TILEGX_R2,
61  UNW_TILEGX_R3,
62  UNW_TILEGX_R4,
63  UNW_TILEGX_R5,
64  UNW_TILEGX_R6,
65  UNW_TILEGX_R7,
66  UNW_TILEGX_R8,
67  UNW_TILEGX_R9,
68  UNW_TILEGX_R10,
69  UNW_TILEGX_R11,
70  UNW_TILEGX_R12,
71  UNW_TILEGX_R13,
72  UNW_TILEGX_R14,
73  UNW_TILEGX_R15,
74  UNW_TILEGX_R16,
75  UNW_TILEGX_R17,
76  UNW_TILEGX_R18,
77  UNW_TILEGX_R19,
78  UNW_TILEGX_R20,
79  UNW_TILEGX_R21,
80  UNW_TILEGX_R22,
81  UNW_TILEGX_R23,
82  UNW_TILEGX_R24,
83  UNW_TILEGX_R25,
84  UNW_TILEGX_R26,
85  UNW_TILEGX_R27,
86  UNW_TILEGX_R28,
87  UNW_TILEGX_R29,
88  UNW_TILEGX_R30,
89  UNW_TILEGX_R31,
90  UNW_TILEGX_R32,
91  UNW_TILEGX_R33,
92  UNW_TILEGX_R34,
93  UNW_TILEGX_R35,
94  UNW_TILEGX_R36,
95  UNW_TILEGX_R37,
96  UNW_TILEGX_R38,
97  UNW_TILEGX_R39,
98  UNW_TILEGX_R40,
99  UNW_TILEGX_R41,
100  UNW_TILEGX_R42,
101  UNW_TILEGX_R43,
102  UNW_TILEGX_R44,
103  UNW_TILEGX_R45,
104  UNW_TILEGX_R46,
105  UNW_TILEGX_R47,
106  UNW_TILEGX_R48,
107  UNW_TILEGX_R49,
108  UNW_TILEGX_R50,
109  UNW_TILEGX_R51,
110  UNW_TILEGX_R52,
111  UNW_TILEGX_R53,
112  UNW_TILEGX_R54,
113  UNW_TILEGX_R55,
114
115  /* FIXME: Other registers!  */
116
117  UNW_TILEGX_PC,
118  /* For TILEGX, the CFA is the value of SP (r54) at the call site in the
119     previous frame.  */
120  UNW_TILEGX_CFA,
121
122  UNW_TDEP_LAST_REG = UNW_TILEGX_PC,
123
124  UNW_TDEP_IP = UNW_TILEGX_R55,  /* R55 is link register for Tilegx */
125  UNW_TDEP_SP = UNW_TILEGX_R54,
126  UNW_TDEP_EH = UNW_TILEGX_R0   /* FIXME.  */
127} tilegx_regnum_t;
128
129typedef enum
130{
131  UNW_TILEGX_ABI_N64 = 2
132} tilegx_abi_t;
133
134#define UNW_TDEP_NUM_EH_REGS    2   /* FIXME for TILEGX.  */
135
136typedef struct unw_tdep_save_loc
137{
138  /* Additional target-dependent info on a save location.  */
139} unw_tdep_save_loc_t;
140
141typedef ucontext_t unw_tdep_context_t;
142
143#include "libunwind-dynamic.h"
144
145typedef struct
146{
147    /* no tilegx-specific auxiliary proc-info */
148} unw_tdep_proc_info_t;
149
150#include "libunwind-common.h"
151
152#define unw_tdep_getcontext  getcontext
153
154#define unw_tdep_is_fpreg    UNW_ARCH_OBJ(is_fpreg)
155extern int unw_tdep_is_fpreg (int);
156
157#if defined(__cplusplus) || defined(c_plusplus)
158}
159#endif
160
161#endif /* LIBUNWIND_H */
162