1 /* Copyright (C) 2009-2014 Free Software Foundation, Inc.
3 This file is part of GDB.
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 3 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program. If not, see <http://www.gnu.org/licenses/>. */
23 #include <sys/ptrace.h>
25 /* The following two typedefs are defined in a .h file which is not
26 in the standard include path (/sys/include/family/ppc/ucontext.h),
27 so we just duplicate them here. */
29 /* General register context */
30 typedef struct usr_econtext_s
32 uint32_t uec_iregs[32];
43 uint32_t uec_sregs[16];
44 uint32_t uec_ss_count;
45 uint32_t uec_ss_addr1;
46 uint32_t uec_ss_addr2;
47 uint32_t uec_ss_code1;
48 uint32_t uec_ss_code2;
51 /* Floating point register context */
52 typedef struct usr_fcontext_s
54 uint64_t ufc_freg[32];
55 uint32_t ufc_fpscr[2];
58 /* Index of for various registers inside the regcache. */
67 #define FPSCR_REGNUM 70
69 /* Defined in auto-generated file powerpc-32.c. */
70 extern void init_registers_powerpc_32 (void);
71 extern const struct target_desc *tdesc_powerpc_32;
73 /* The fill_function for the general-purpose register set. */
76 lynx_ppc_fill_gregset (struct regcache *regcache, char *buf)
81 for (i = 0; i < 32; i++)
82 collect_register (regcache, R0_REGNUM + i,
83 buf + offsetof (usr_econtext_t, uec_iregs[i]));
85 /* The other registers provided in the GP register context. */
86 collect_register (regcache, PC_REGNUM,
87 buf + offsetof (usr_econtext_t, uec_srr0));
88 collect_register (regcache, MSR_REGNUM,
89 buf + offsetof (usr_econtext_t, uec_srr1));
90 collect_register (regcache, CR_REGNUM,
91 buf + offsetof (usr_econtext_t, uec_cr));
92 collect_register (regcache, LR_REGNUM,
93 buf + offsetof (usr_econtext_t, uec_lr));
94 collect_register (regcache, CTR_REGNUM,
95 buf + offsetof (usr_econtext_t, uec_ctr));
96 collect_register (regcache, XER_REGNUM,
97 buf + offsetof (usr_econtext_t, uec_xer));
100 /* The store_function for the general-purpose register set. */
103 lynx_ppc_store_gregset (struct regcache *regcache, const char *buf)
108 for (i = 0; i < 32; i++)
109 supply_register (regcache, R0_REGNUM + i,
110 buf + offsetof (usr_econtext_t, uec_iregs[i]));
112 /* The other registers provided in the GP register context. */
113 supply_register (regcache, PC_REGNUM,
114 buf + offsetof (usr_econtext_t, uec_srr0));
115 supply_register (regcache, MSR_REGNUM,
116 buf + offsetof (usr_econtext_t, uec_srr1));
117 supply_register (regcache, CR_REGNUM,
118 buf + offsetof (usr_econtext_t, uec_cr));
119 supply_register (regcache, LR_REGNUM,
120 buf + offsetof (usr_econtext_t, uec_lr));
121 supply_register (regcache, CTR_REGNUM,
122 buf + offsetof (usr_econtext_t, uec_ctr));
123 supply_register (regcache, XER_REGNUM,
124 buf + offsetof (usr_econtext_t, uec_xer));
127 /* The fill_function for the floating-point register set. */
130 lynx_ppc_fill_fpregset (struct regcache *regcache, char *buf)
135 for (i = 0; i < 32; i++)
136 collect_register (regcache, F0_REGNUM + i,
137 buf + offsetof (usr_fcontext_t, ufc_freg[i]));
140 collect_register (regcache, FPSCR_REGNUM,
141 buf + offsetof (usr_fcontext_t, ufc_fpscr));
144 /* The store_function for the floating-point register set. */
147 lynx_ppc_store_fpregset (struct regcache *regcache, const char *buf)
152 for (i = 0; i < 32; i++)
153 supply_register (regcache, F0_REGNUM + i,
154 buf + offsetof (usr_fcontext_t, ufc_freg[i]));
157 supply_register (regcache, FPSCR_REGNUM,
158 buf + offsetof (usr_fcontext_t, ufc_fpscr));
161 /* Implements the lynx_target_ops.arch_setup routine. */
164 lynx_ppc_arch_setup (void)
166 init_registers_powerpc_32 ();
167 lynx_tdesc = tdesc_powerpc_32;
170 /* Description of all the powerpc-lynx register sets. */
172 struct lynx_regset_info lynx_target_regsets[] = {
173 /* General Purpose Registers. */
174 {PTRACE_GETREGS, PTRACE_SETREGS, sizeof(usr_econtext_t),
175 lynx_ppc_fill_gregset, lynx_ppc_store_gregset},
176 /* Floating Point Registers. */
177 { PTRACE_GETFPREGS, PTRACE_SETFPREGS, sizeof(usr_fcontext_t),
178 lynx_ppc_fill_fpregset, lynx_ppc_store_fpregset },
179 /* End of list marker. */
180 {0, 0, -1, NULL, NULL }
183 /* The lynx_target_ops vector for powerpc-lynxos. */
185 struct lynx_target_ops the_low_target = {