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386c036b MK |
1 | /* Native-dependent code for NetBSD/sparc64. |
2 | ||
9b254dd1 | 3 | Copyright (C) 2003, 2004, 2006, 2007, 2008 Free Software Foundation, Inc. |
9ce5c36a JT |
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 | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
9ce5c36a JT |
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 | |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
9ce5c36a JT |
19 | |
20 | #include "defs.h" | |
6df5070e | 21 | #include "gdbcore.h" |
90f3cecd | 22 | #include "regcache.h" |
1b9445c2 | 23 | #include "target.h" |
9ce5c36a | 24 | |
386c036b MK |
25 | #include "sparc64-tdep.h" |
26 | #include "sparc-nat.h" | |
9ce5c36a | 27 | |
386c036b MK |
28 | /* NetBSD is different from the other OSes that support both SPARC and |
29 | UltraSPARC in that the result of ptrace(2) depends on whether the | |
30 | traced process is 32-bit or 64-bit. */ | |
9ce5c36a | 31 | |
386c036b MK |
32 | static void |
33 | sparc64nbsd_supply_gregset (const struct sparc_gregset *gregset, | |
34 | struct regcache *regcache, | |
35 | int regnum, const void *gregs) | |
36 | { | |
e6d4f032 | 37 | int sparc32 = (gdbarch_ptr_bit (get_regcache_arch (regcache)) == 32); |
9ce5c36a | 38 | |
386c036b MK |
39 | if (sparc32) |
40 | sparc32_supply_gregset (&sparc32nbsd_gregset, regcache, regnum, gregs); | |
41 | else | |
42 | sparc64_supply_gregset (&sparc64nbsd_gregset, regcache, regnum, gregs); | |
43 | } | |
44 | ||
45 | static void | |
46 | sparc64nbsd_collect_gregset (const struct sparc_gregset *gregset, | |
47 | const struct regcache *regcache, | |
48 | int regnum, void *gregs) | |
49 | { | |
e6d4f032 | 50 | int sparc32 = (gdbarch_ptr_bit (get_regcache_arch (regcache)) == 32); |
386c036b MK |
51 | |
52 | if (sparc32) | |
53 | sparc32_collect_gregset (&sparc32nbsd_gregset, regcache, regnum, gregs); | |
54 | else | |
55 | sparc64_collect_gregset (&sparc64nbsd_gregset, regcache, regnum, gregs); | |
56 | } | |
57 | ||
58 | static void | |
59 | sparc64nbsd_supply_fpregset (struct regcache *regcache, | |
60 | int regnum, const void *fpregs) | |
61 | { | |
e6d4f032 | 62 | int sparc32 = (gdbarch_ptr_bit (get_regcache_arch (regcache)) == 32); |
386c036b MK |
63 | |
64 | if (sparc32) | |
65 | sparc32_supply_fpregset (regcache, regnum, fpregs); | |
66 | else | |
67 | sparc64_supply_fpregset (regcache, regnum, fpregs); | |
68 | } | |
69 | ||
70 | static void | |
71 | sparc64nbsd_collect_fpregset (const struct regcache *regcache, | |
72 | int regnum, void *fpregs) | |
9ce5c36a | 73 | { |
e6d4f032 | 74 | int sparc32 = (gdbarch_ptr_bit (get_regcache_arch (regcache)) == 32); |
386c036b MK |
75 | |
76 | if (sparc32) | |
77 | sparc32_collect_fpregset (regcache, regnum, fpregs); | |
78 | else | |
79 | sparc64_collect_fpregset (regcache, regnum, fpregs); | |
9ce5c36a JT |
80 | } |
81 | ||
386c036b MK |
82 | /* Determine whether `gregset_t' contains register REGNUM. */ |
83 | ||
9ce5c36a | 84 | static int |
386c036b | 85 | sparc64nbsd_gregset_supplies_p (int regnum) |
9ce5c36a | 86 | { |
386c036b MK |
87 | if (gdbarch_ptr_bit (current_gdbarch) == 32) |
88 | return sparc32_gregset_supplies_p (regnum); | |
89 | ||
90 | /* Integer registers. */ | |
91 | if ((regnum >= SPARC_G1_REGNUM && regnum <= SPARC_G7_REGNUM) | |
92 | || (regnum >= SPARC_O0_REGNUM && regnum <= SPARC_O7_REGNUM) | |
93 | || (regnum >= SPARC_L0_REGNUM && regnum <= SPARC_L7_REGNUM) | |
94 | || (regnum >= SPARC_I0_REGNUM && regnum <= SPARC_I7_REGNUM)) | |
95 | return 1; | |
96 | ||
97 | /* Control registers. */ | |
98 | if (regnum == SPARC64_PC_REGNUM | |
99 | || regnum == SPARC64_NPC_REGNUM | |
100 | || regnum == SPARC64_STATE_REGNUM | |
101 | || regnum == SPARC64_Y_REGNUM) | |
102 | return 1; | |
103 | ||
104 | return 0; | |
9ce5c36a JT |
105 | } |
106 | ||
386c036b MK |
107 | /* Determine whether `fpregset_t' contains register REGNUM. */ |
108 | ||
109 | static int | |
110 | sparc64nbsd_fpregset_supplies_p (int regnum) | |
9ce5c36a | 111 | { |
386c036b MK |
112 | if (gdbarch_ptr_bit (current_gdbarch) == 32) |
113 | return sparc32_fpregset_supplies_p (regnum); | |
114 | ||
115 | /* Floating-point registers. */ | |
116 | if ((regnum >= SPARC_F0_REGNUM && regnum <= SPARC_F31_REGNUM) | |
117 | || (regnum >= SPARC64_F32_REGNUM && regnum <= SPARC64_F62_REGNUM)) | |
118 | return 1; | |
119 | ||
120 | /* Control registers. */ | |
121 | if (regnum == SPARC64_FSR_REGNUM) | |
122 | return 1; | |
123 | ||
124 | return 0; | |
9ce5c36a | 125 | } |
90f3cecd MK |
126 | \f |
127 | ||
128 | /* Support for debugging kernel virtual memory images. */ | |
129 | ||
130 | #include <sys/types.h> | |
131 | #include <machine/pcb.h> | |
132 | ||
133 | #include "bsd-kvm.h" | |
134 | ||
135 | static int | |
136 | sparc64nbsd_supply_pcb (struct regcache *regcache, struct pcb *pcb) | |
137 | { | |
6df5070e | 138 | u_int64_t state; |
90f3cecd MK |
139 | int regnum; |
140 | ||
141 | /* The following is true for NetBSD 1.6.2: | |
142 | ||
143 | The pcb contains %sp and %pc, %psr and %wim. From this information | |
144 | we reconstruct the register state as it would look when we just | |
145 | returned from cpu_switch(). */ | |
146 | ||
147 | /* The stack pointer shouldn't be zero. */ | |
148 | if (pcb->pcb_sp == 0) | |
149 | return 0; | |
150 | ||
6df5070e MK |
151 | /* If the program counter is zero, this is probably a core dump, and |
152 | we can get %pc from the stack. */ | |
153 | if (pcb->pcb_pc == 0) | |
154 | read_memory(pcb->pcb_sp + BIAS - 176 + (11 * 8), | |
155 | (gdb_byte *)&pcb->pcb_pc, sizeof pcb->pcb_pc); | |
156 | ||
157 | ||
90f3cecd MK |
158 | regcache_raw_supply (regcache, SPARC_SP_REGNUM, &pcb->pcb_sp); |
159 | regcache_raw_supply (regcache, SPARC64_PC_REGNUM, &pcb->pcb_pc); | |
160 | ||
6df5070e MK |
161 | state = pcb->pcb_pstate << 8 | pcb->pcb_cwp; |
162 | regcache_raw_supply (regcache, SPARC64_STATE_REGNUM, &state); | |
163 | ||
90f3cecd MK |
164 | sparc_supply_rwindow (regcache, pcb->pcb_sp, -1); |
165 | ||
166 | return 1; | |
167 | } | |
9ce5c36a | 168 | |
386c036b MK |
169 | \f |
170 | /* Provide a prototype to silence -Wmissing-prototypes. */ | |
90f3cecd | 171 | void _initialize_sparc64nbsd_nat (void); |
386c036b | 172 | |
9ce5c36a | 173 | void |
90f3cecd | 174 | _initialize_sparc64nbsd_nat (void) |
9ce5c36a | 175 | { |
386c036b MK |
176 | sparc_supply_gregset = sparc64nbsd_supply_gregset; |
177 | sparc_collect_gregset = sparc64nbsd_collect_gregset; | |
178 | sparc_supply_fpregset = sparc64nbsd_supply_fpregset; | |
179 | sparc_collect_fpregset = sparc64nbsd_collect_fpregset; | |
180 | sparc_gregset_supplies_p = sparc64nbsd_gregset_supplies_p; | |
181 | sparc_fpregset_supplies_p = sparc64nbsd_fpregset_supplies_p; | |
90f3cecd | 182 | |
1b9445c2 MK |
183 | /* We've got nothing to add to the generic SPARC target. */ |
184 | add_target (sparc_target ()); | |
185 | ||
90f3cecd MK |
186 | /* Support debugging kernel virtual memory images. */ |
187 | bsd_kvm_add_target (sparc64nbsd_supply_pcb); | |
9ce5c36a | 188 | } |