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c877c8e6 | 1 | /* PPC linux native support. |
b6ba6518 KB |
2 | Copyright 1988, 1989, 1991, 1992, 1994, 1996, 2000, 2001 |
3 | Free Software Foundation, Inc. | |
c877c8e6 KB |
4 | |
5 | This file is part of GDB. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
20 | ||
21 | #include "defs.h" | |
22 | #include "frame.h" | |
23 | #include "inferior.h" | |
24 | #include "gdbcore.h" | |
4e052eda | 25 | #include "regcache.h" |
c877c8e6 KB |
26 | |
27 | #include <sys/types.h> | |
28 | #include <sys/param.h> | |
29 | #include <signal.h> | |
30 | #include <sys/user.h> | |
31 | #include <sys/ioctl.h> | |
32 | #include <sys/wait.h> | |
33 | #include <fcntl.h> | |
34 | #include <sys/procfs.h> | |
35 | ||
c60c0f5f MS |
36 | /* Prototypes for supply_gregset etc. */ |
37 | #include "gregset.h" | |
16333c4f | 38 | #include "ppc-tdep.h" |
c60c0f5f | 39 | |
c877c8e6 | 40 | int |
fba45db2 | 41 | kernel_u_size (void) |
c877c8e6 KB |
42 | { |
43 | return (sizeof (struct user)); | |
44 | } | |
45 | ||
16333c4f EZ |
46 | /* *INDENT-OFF* */ |
47 | /* registers layout, as presented by the ptrace interface: | |
48 | PT_R0, PT_R1, PT_R2, PT_R3, PT_R4, PT_R5, PT_R6, PT_R7, | |
49 | PT_R8, PT_R9, PT_R10, PT_R11, PT_R12, PT_R13, PT_R14, PT_R15, | |
50 | PT_R16, PT_R17, PT_R18, PT_R19, PT_R20, PT_R21, PT_R22, PT_R23, | |
51 | PT_R24, PT_R25, PT_R26, PT_R27, PT_R28, PT_R29, PT_R30, PT_R31, | |
52 | PT_FPR0, PT_FPR0 + 2, PT_FPR0 + 4, PT_FPR0 + 6, PT_FPR0 + 8, PT_FPR0 + 10, PT_FPR0 + 12, PT_FPR0 + 14, | |
53 | PT_FPR0 + 16, PT_FPR0 + 18, PT_FPR0 + 20, PT_FPR0 + 22, PT_FPR0 + 24, PT_FPR0 + 26, PT_FPR0 + 28, PT_FPR0 + 30, | |
54 | PT_FPR0 + 32, PT_FPR0 + 34, PT_FPR0 + 36, PT_FPR0 + 38, PT_FPR0 + 40, PT_FPR0 + 42, PT_FPR0 + 44, PT_FPR0 + 46, | |
55 | PT_FPR0 + 48, PT_FPR0 + 50, PT_FPR0 + 52, PT_FPR0 + 54, PT_FPR0 + 56, PT_FPR0 + 58, PT_FPR0 + 60, PT_FPR0 + 62, | |
56 | PT_NIP, PT_MSR, PT_CCR, PT_LNK, PT_CTR, PT_XER, PT_MQ */ | |
57 | /* *INDENT_ON * */ | |
c877c8e6 KB |
58 | |
59 | int | |
16333c4f | 60 | ppc_register_u_addr (int ustart, int regno) |
c877c8e6 | 61 | { |
16333c4f EZ |
62 | int u_addr = -1; |
63 | ||
64 | /* General purpose registers occupy 1 slot each in the buffer */ | |
2188cbdd EZ |
65 | if (regno >= gdbarch_tdep (current_gdbarch)->ppc_gp0_regnum |
66 | && regno <= gdbarch_tdep (current_gdbarch)->ppc_gplast_regnum ) | |
16333c4f EZ |
67 | u_addr = (ustart + (PT_R0 + regno) * 4); |
68 | ||
69 | /* Floating point regs: 2 slots each */ | |
70 | if (regno >= FP0_REGNUM && regno <= FPLAST_REGNUM) | |
71 | u_addr = (ustart + (PT_FPR0 + (regno - FP0_REGNUM) * 2) * 4); | |
72 | ||
73 | /* UISA special purpose registers: 1 slot each */ | |
74 | if (regno == PC_REGNUM) | |
75 | u_addr = ustart + PT_NIP * 4; | |
2188cbdd | 76 | if (regno == gdbarch_tdep (current_gdbarch)->ppc_lr_regnum) |
16333c4f | 77 | u_addr = ustart + PT_LNK * 4; |
2188cbdd | 78 | if (regno == gdbarch_tdep (current_gdbarch)->ppc_cr_regnum) |
16333c4f | 79 | u_addr = ustart + PT_CCR * 4; |
2188cbdd | 80 | if (regno == gdbarch_tdep (current_gdbarch)->ppc_xer_regnum) |
16333c4f | 81 | u_addr = ustart + PT_XER * 4; |
2188cbdd | 82 | if (regno == gdbarch_tdep (current_gdbarch)->ppc_ctr_regnum) |
16333c4f | 83 | u_addr = ustart + PT_CTR * 4; |
2188cbdd | 84 | if (regno == gdbarch_tdep (current_gdbarch)->ppc_mq_regnum) |
16333c4f | 85 | u_addr = ustart + PT_MQ * 4; |
2188cbdd | 86 | if (regno == gdbarch_tdep (current_gdbarch)->ppc_ps_regnum) |
16333c4f EZ |
87 | u_addr = ustart + PT_MSR * 4; |
88 | ||
89 | return u_addr; | |
c877c8e6 KB |
90 | } |
91 | ||
50c9bd31 | 92 | void |
8ae45c11 | 93 | supply_gregset (gdb_gregset_t *gregsetp) |
c877c8e6 KB |
94 | { |
95 | int regi; | |
2ac44c70 | 96 | register elf_greg_t *regp = (elf_greg_t *) gregsetp; |
c877c8e6 KB |
97 | |
98 | for (regi = 0; regi < 32; regi++) | |
99 | supply_register (regi, (char *) (regp + regi)); | |
100 | ||
16333c4f | 101 | supply_register (PC_REGNUM, (char *) (regp + PT_NIP)); |
2188cbdd EZ |
102 | supply_register (gdbarch_tdep (current_gdbarch)->ppc_lr_regnum, |
103 | (char *) (regp + PT_LNK)); | |
104 | supply_register (gdbarch_tdep (current_gdbarch)->ppc_cr_regnum, | |
105 | (char *) (regp + PT_CCR)); | |
106 | supply_register (gdbarch_tdep (current_gdbarch)->ppc_xer_regnum, | |
107 | (char *) (regp + PT_XER)); | |
108 | supply_register (gdbarch_tdep (current_gdbarch)->ppc_ctr_regnum, | |
109 | (char *) (regp + PT_CTR)); | |
110 | supply_register (gdbarch_tdep (current_gdbarch)->ppc_mq_regnum, | |
111 | (char *) (regp + PT_MQ)); | |
112 | supply_register (gdbarch_tdep (current_gdbarch)->ppc_ps_regnum, | |
113 | (char *) (regp + PT_MSR)); | |
114 | ||
c877c8e6 KB |
115 | } |
116 | ||
fdb28ac4 | 117 | void |
8ae45c11 | 118 | fill_gregset (gdb_gregset_t *gregsetp, int regno) |
fdb28ac4 KB |
119 | { |
120 | int regi; | |
2ac44c70 | 121 | elf_greg_t *regp = (elf_greg_t *) gregsetp; |
fdb28ac4 | 122 | |
fdb28ac4 KB |
123 | for (regi = 0; regi < 32; regi++) |
124 | { | |
16333c4f EZ |
125 | if ((regno == -1) || regno == regi) |
126 | regcache_collect (regi, regp + PT_R0 + regi); | |
fdb28ac4 KB |
127 | } |
128 | ||
16333c4f EZ |
129 | if ((regno == -1) || regno == PC_REGNUM) |
130 | regcache_collect (PC_REGNUM, regp + PT_NIP); | |
2188cbdd EZ |
131 | if ((regno == -1) |
132 | || regno == gdbarch_tdep (current_gdbarch)->ppc_lr_regnum) | |
133 | regcache_collect (gdbarch_tdep (current_gdbarch)->ppc_lr_regnum, | |
134 | regp + PT_LNK); | |
135 | if ((regno == -1) | |
136 | || regno == gdbarch_tdep (current_gdbarch)->ppc_cr_regnum) | |
137 | regcache_collect (gdbarch_tdep (current_gdbarch)->ppc_cr_regnum, | |
138 | regp + PT_CCR); | |
139 | if ((regno == -1) | |
140 | || regno == gdbarch_tdep (current_gdbarch)->ppc_xer_regnum) | |
141 | regcache_collect (gdbarch_tdep (current_gdbarch)->ppc_xer_regnum, | |
142 | regp + PT_XER); | |
143 | if ((regno == -1) | |
144 | || regno == gdbarch_tdep (current_gdbarch)->ppc_ctr_regnum) | |
145 | regcache_collect (gdbarch_tdep (current_gdbarch)->ppc_ctr_regnum, | |
146 | regp + PT_CTR); | |
147 | if ((regno == -1) | |
148 | || regno == gdbarch_tdep (current_gdbarch)->ppc_mq_regnum) | |
149 | regcache_collect (gdbarch_tdep (current_gdbarch)->ppc_mq_regnum, | |
150 | regp + PT_MQ); | |
151 | if ((regno == -1) | |
152 | || regno == gdbarch_tdep (current_gdbarch)->ppc_ps_regnum) | |
153 | regcache_collect (gdbarch_tdep (current_gdbarch)->ppc_ps_regnum, | |
154 | regp + PT_MSR); | |
fdb28ac4 KB |
155 | } |
156 | ||
50c9bd31 | 157 | void |
8ae45c11 | 158 | supply_fpregset (gdb_fpregset_t * fpregsetp) |
c877c8e6 KB |
159 | { |
160 | int regi; | |
161 | for (regi = 0; regi < 32; regi++) | |
162 | { | |
163 | supply_register (FP0_REGNUM + regi, (char *) (*fpregsetp + regi)); | |
164 | } | |
165 | } | |
fdb28ac4 KB |
166 | |
167 | /* Given a pointer to a floating point register set in /proc format | |
168 | (fpregset_t *), update the register specified by REGNO from gdb's idea | |
169 | of the current floating point register set. If REGNO is -1, update | |
170 | them all. */ | |
171 | ||
172 | void | |
8ae45c11 | 173 | fill_fpregset (gdb_fpregset_t *fpregsetp, int regno) |
fdb28ac4 KB |
174 | { |
175 | int regi; | |
fdb28ac4 KB |
176 | |
177 | for (regi = 0; regi < 32; regi++) | |
178 | { | |
179 | if ((regno == -1) || (regno == FP0_REGNUM + regi)) | |
f00d3753 | 180 | regcache_collect (FP0_REGNUM + regi, (char *) (*fpregsetp + regi)); |
fdb28ac4 KB |
181 | } |
182 | } |