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/tmp/gdb-8.1/gdb/spu-tdep.h
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1 /* SPU target-dependent code for GDB, the GNU debugger.
2 Copyright (C) 2006-2018 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 3 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, see <http://www.gnu.org/licenses/>. */
18
19 #ifndef SPU_TDEP_H
20 #define SPU_TDEP_H
21
22 /* Number of registers. */
23 #define SPU_NUM_REGS 130
24 #define SPU_NUM_PSEUDO_REGS 6
25 #define SPU_NUM_GPRS 128
26
27 /* Register numbers of various important registers. */
28 enum spu_regnum
29 {
30 /* SPU calling convention. */
31 SPU_LR_REGNUM = 0, /* Link register. */
32 SPU_RAW_SP_REGNUM = 1, /* Stack pointer (full register). */
33 SPU_ARG1_REGNUM = 3, /* First argument register. */
34 SPU_ARGN_REGNUM = 74, /* Last argument register. */
35 SPU_SAVED1_REGNUM = 80, /* First call-saved register. */
36 SPU_SAVEDN_REGNUM = 127, /* Last call-saved register. */
37 SPU_FP_REGNUM = 127, /* Frame pointer. */
38
39 /* Special registers. */
40 SPU_ID_REGNUM = 128, /* SPU ID register. */
41 SPU_PC_REGNUM = 129, /* Next program counter. */
42 SPU_SP_REGNUM = 130, /* Stack pointer (preferred slot). */
43 SPU_FPSCR_REGNUM = 131, /* Floating point status/control register. */
44 SPU_SRR0_REGNUM = 132, /* SRR0 register. */
45 SPU_LSLR_REGNUM = 133, /* Local store limit register. */
46 SPU_DECR_REGNUM = 134, /* Decrementer value. */
47 SPU_DECR_STATUS_REGNUM = 135 /* Decrementer status. */
48 };
49
50 /* Address conversions.
51
52 In a combined PPU/SPU debugging session, we have to consider multiple
53 address spaces: the PPU 32- or 64-bit address space, and the 32-bit
54 local store address space for each SPU context. As it is currently
55 not yet possible to use the program_space / address_space mechanism
56 to represent this, we encode all those addresses into one single
57 64-bit address for the whole process. For SPU programs using overlays,
58 this address space must also include separate ranges reserved for the
59 LMA of overlay sections.
60
61
62 The following combinations are supported for combined debugging:
63
64 PPU address (this relies on the fact that PPC 64-bit user space
65 addresses can never have the highest-most bit set):
66
67 +-+---------------------------------+
68 |0| ADDR [63] |
69 +-+---------------------------------+
70
71 SPU address for SPU context with id SPU (this assumes that SPU
72 IDs, which are file descriptors, are never larger than 2^30):
73
74 +-+-+--------------+----------------+
75 |1|0| SPU [30] | ADDR [32] |
76 +-+-+--------------+----------------+
77
78 SPU overlay section LMA for SPU context with id SPU:
79
80 +-+-+--------------+----------------+
81 |1|1| SPU [30] | ADDR [32] |
82 +-+-+--------------+----------------+
83
84
85 In SPU stand-alone debugging mode (using spu-linux-nat.c),
86 the following combinations are supported:
87
88 SPU address:
89
90 +-+-+--------------+----------------+
91 |0|0| 0 | ADDR [32] |
92 +-+-+--------------+----------------+
93
94 SPU overlay section LMA:
95
96 +-+-+--------------+----------------+
97 |0|1| 0 | ADDR [32] |
98 +-+-+--------------+----------------+
99
100
101 The following macros allow manipulation of addresses in the
102 above formats. */
103
104 #define SPUADDR(spu, addr) \
105 ((spu) != -1? (ULONGEST)1 << 63 | (ULONGEST)(spu) << 32 | (addr) : (addr))
106
107 #define SPUADDR_SPU(addr) \
108 (((addr) & (ULONGEST)1 << 63) \
109 ? (int) ((ULONGEST)(addr) >> 32 & 0x3fffffff) \
110 : -1)
111
112 #define SPUADDR_ADDR(addr) \
113 (((addr) & (ULONGEST)1 << 63)? (ULONGEST)(addr) & 0xffffffff : (addr))
114
115 #define SPU_OVERLAY_LMA ((ULONGEST)1 << 62)
116
117 #endif
SPU_ID_REGNUM
Definition: spu-tdep.h:40
SPU_SRR0_REGNUM
Definition: spu-tdep.h:44
SPU_RAW_SP_REGNUM
Definition: spu-tdep.h:32
SPU_FP_REGNUM
Definition: spu-tdep.h:37
SPU_LR_REGNUM
Definition: spu-tdep.h:31
SPU_ARG1_REGNUM
Definition: spu-tdep.h:33
SPU_SAVED1_REGNUM
Definition: spu-tdep.h:35
SPU_FPSCR_REGNUM
Definition: spu-tdep.h:43
SPU_SAVEDN_REGNUM
Definition: spu-tdep.h:36
SPU_ARGN_REGNUM
Definition: spu-tdep.h:34
SPU_DECR_REGNUM
Definition: spu-tdep.h:46
spu_regnum
spu_regnum
Definition: spu-tdep.h:28
SPU_DECR_STATUS_REGNUM
Definition: spu-tdep.h:47
SPU_SP_REGNUM
Definition: spu-tdep.h:42
SPU_LSLR_REGNUM
Definition: spu-tdep.h:45
SPU_PC_REGNUM
Definition: spu-tdep.h:41