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/>. */
24 #include <sys/ptrace.h>
26 /* The following two typedefs are defined in a .h file which is not
27 in the standard include path (/sys/include/family/ppc/ucontext.h),
28 so we just duplicate them here. */
30 /* General register context */
31 typedef struct usr_econtext_s
33 uint32_t uec_iregs
[32];
44 uint32_t uec_sregs
[16];
45 uint32_t uec_ss_count
;
46 uint32_t uec_ss_addr1
;
47 uint32_t uec_ss_addr2
;
48 uint32_t uec_ss_code1
;
49 uint32_t uec_ss_code2
;
52 /* Floating point register context */
53 typedef struct usr_fcontext_s
55 uint64_t ufc_freg
[32];
56 uint32_t ufc_fpscr
[2];
59 /* Index of for various registers inside the regcache. */
68 #define FPSCR_REGNUM 70
70 /* Defined in auto-generated file powerpc-32.c. */
71 extern void init_registers_powerpc_32 (void);
72 extern const struct target_desc
*tdesc_powerpc_32
;
74 /* The fill_function for the general-purpose register set. */
77 lynx_ppc_fill_gregset (struct regcache
*regcache
, char *buf
)
82 for (i
= 0; i
< 32; i
++)
83 collect_register (regcache
, R0_REGNUM
+ i
,
84 buf
+ offsetof (usr_econtext_t
, uec_iregs
[i
]));
86 /* The other registers provided in the GP register context. */
87 collect_register (regcache
, PC_REGNUM
,
88 buf
+ offsetof (usr_econtext_t
, uec_srr0
));
89 collect_register (regcache
, MSR_REGNUM
,
90 buf
+ offsetof (usr_econtext_t
, uec_srr1
));
91 collect_register (regcache
, CR_REGNUM
,
92 buf
+ offsetof (usr_econtext_t
, uec_cr
));
93 collect_register (regcache
, LR_REGNUM
,
94 buf
+ offsetof (usr_econtext_t
, uec_lr
));
95 collect_register (regcache
, CTR_REGNUM
,
96 buf
+ offsetof (usr_econtext_t
, uec_ctr
));
97 collect_register (regcache
, XER_REGNUM
,
98 buf
+ offsetof (usr_econtext_t
, uec_xer
));
101 /* The store_function for the general-purpose register set. */
104 lynx_ppc_store_gregset (struct regcache
*regcache
, const char *buf
)
109 for (i
= 0; i
< 32; i
++)
110 supply_register (regcache
, R0_REGNUM
+ i
,
111 buf
+ offsetof (usr_econtext_t
, uec_iregs
[i
]));
113 /* The other registers provided in the GP register context. */
114 supply_register (regcache
, PC_REGNUM
,
115 buf
+ offsetof (usr_econtext_t
, uec_srr0
));
116 supply_register (regcache
, MSR_REGNUM
,
117 buf
+ offsetof (usr_econtext_t
, uec_srr1
));
118 supply_register (regcache
, CR_REGNUM
,
119 buf
+ offsetof (usr_econtext_t
, uec_cr
));
120 supply_register (regcache
, LR_REGNUM
,
121 buf
+ offsetof (usr_econtext_t
, uec_lr
));
122 supply_register (regcache
, CTR_REGNUM
,
123 buf
+ offsetof (usr_econtext_t
, uec_ctr
));
124 supply_register (regcache
, XER_REGNUM
,
125 buf
+ offsetof (usr_econtext_t
, uec_xer
));
128 /* The fill_function for the floating-point register set. */
131 lynx_ppc_fill_fpregset (struct regcache
*regcache
, char *buf
)
136 for (i
= 0; i
< 32; i
++)
137 collect_register (regcache
, F0_REGNUM
+ i
,
138 buf
+ offsetof (usr_fcontext_t
, ufc_freg
[i
]));
141 collect_register (regcache
, FPSCR_REGNUM
,
142 buf
+ offsetof (usr_fcontext_t
, ufc_fpscr
));
145 /* The store_function for the floating-point register set. */
148 lynx_ppc_store_fpregset (struct regcache
*regcache
, const char *buf
)
153 for (i
= 0; i
< 32; i
++)
154 supply_register (regcache
, F0_REGNUM
+ i
,
155 buf
+ offsetof (usr_fcontext_t
, ufc_freg
[i
]));
158 supply_register (regcache
, FPSCR_REGNUM
,
159 buf
+ offsetof (usr_fcontext_t
, ufc_fpscr
));
162 /* Implements the lynx_target_ops.arch_setup routine. */
165 lynx_ppc_arch_setup (void)
167 init_registers_powerpc_32 ();
168 lynx_tdesc
= tdesc_powerpc_32
;
171 /* Description of all the powerpc-lynx register sets. */
173 struct lynx_regset_info lynx_target_regsets
[] = {
174 /* General Purpose Registers. */
175 {PTRACE_GETREGS
, PTRACE_SETREGS
, sizeof(usr_econtext_t
),
176 lynx_ppc_fill_gregset
, lynx_ppc_store_gregset
},
177 /* Floating Point Registers. */
178 { PTRACE_GETFPREGS
, PTRACE_SETFPREGS
, sizeof(usr_fcontext_t
),
179 lynx_ppc_fill_fpregset
, lynx_ppc_store_fpregset
},
180 /* End of list marker. */
181 {0, 0, -1, NULL
, NULL
}
184 /* The lynx_target_ops vector for powerpc-lynxos. */
186 struct lynx_target_ops the_low_target
= {