summaryrefslogtreecommitdiff
path: root/sysdeps/powerpc/sysdep.h
blob: d1a9bd9b55228f2d0cd5a453942e087a5df322c6 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
/* Copyright (C) 1999-2017 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <http://www.gnu.org/licenses/>.  */

/*
 * Powerpc Feature masks for the Aux Vector Hardware Capabilities (AT_HWCAP).
 * This entry is copied to _dl_hwcap or rtld_global._dl_hwcap during startup.
 */
#define _SYSDEPS_SYSDEP_H 1
#include <bits/hwcap.h>
#include <tls.h>
#include <htm.h>

#define PPC_FEATURE_970 (PPC_FEATURE_POWER4 + PPC_FEATURE_HAS_ALTIVEC)

#ifdef __ASSEMBLER__

/* Symbolic names for the registers.  The only portable way to write asm
   code is to use number but this produces really unreadable code.
   Therefore these symbolic names.  */

/* Integer registers.  */
#define r0	0
#define r1	1
#define r2	2
#define r3	3
#define r4	4
#define r5	5
#define r6	6
#define r7	7
#define r8	8
#define r9	9
#define r10	10
#define r11	11
#define r12	12
#define r13	13
#define r14	14
#define r15	15
#define r16	16
#define r17	17
#define r18	18
#define r19	19
#define r20	20
#define r21	21
#define r22	22
#define r23	23
#define r24	24
#define r25	25
#define r26	26
#define r27	27
#define r28	28
#define r29	29
#define r30	30
#define r31	31

/* Floating-point registers.  */
#define fp0	0
#define fp1	1
#define fp2	2
#define fp3	3
#define fp4	4
#define fp5	5
#define fp6	6
#define fp7	7
#define fp8	8
#define fp9	9
#define fp10	10
#define fp11	11
#define fp12	12
#define fp13	13
#define fp14	14
#define fp15	15
#define fp16	16
#define fp17	17
#define fp18	18
#define fp19	19
#define fp20	20
#define fp21	21
#define fp22	22
#define fp23	23
#define fp24	24
#define fp25	25
#define fp26	26
#define fp27	27
#define fp28	28
#define fp29	29
#define fp30	30
#define fp31	31

/* Condition code registers.  */
#define cr0	0
#define cr1	1
#define cr2	2
#define cr3	3
#define cr4	4
#define cr5	5
#define cr6	6
#define cr7	7

/* Vector registers. */
#define v0	0
#define v1	1
#define v2	2
#define v3	3
#define v4	4
#define v5	5
#define v6	6
#define v7	7
#define v8	8
#define v9	9
#define v10	10
#define v11	11
#define v12	12
#define v13	13
#define v14	14
#define v15	15
#define v16	16
#define v17	17
#define v18	18
#define v19	19
#define v20	20
#define v21	21
#define v22	22
#define v23	23
#define v24	24
#define v25	25
#define v26	26
#define v27	27
#define v28	28
#define v29	29
#define v30	30
#define v31	31

#define VRSAVE	256

/* The 32-bit words of a 64-bit dword are at these offsets in memory.  */
#if defined __LITTLE_ENDIAN__ || defined _LITTLE_ENDIAN
# define LOWORD 0
# define HIWORD 4
#else
# define LOWORD 4
# define HIWORD 0
#endif

/* The high 16-bit word of a 64-bit dword is at this offset in memory.  */
#if defined __LITTLE_ENDIAN__ || defined _LITTLE_ENDIAN
# define HISHORT 6
#else
# define HISHORT 0
#endif

/* This seems to always be the case on PPC.  */
#define ALIGNARG(log2) log2
#define ASM_SIZE_DIRECTIVE(name) .size name,.-name

#else

/* Linux kernel powerpc documentation [1] states issuing a syscall inside a
   transaction is not recommended and may lead to undefined behavior.  It
   also states syscalls do not abort transactions.  To avoid such traps,
   we abort transaction just before syscalls.

   [1] Documentation/powerpc/transactional_memory.txt [Syscalls]  */
#if !IS_IN(rtld)
# define ABORT_TRANSACTION \
  ({ 						\
    if (THREAD_GET_TM_CAPABLE ())		\
      __libc_tabort (_ABORT_SYSCALL);	\
  })
#else
# define ABORT_TRANSACTION
#endif

#endif	/* __ASSEMBLER__ */