1 /* PPC linux native support.
2 Copyright 1988, 1989, 1991, 1992, 1994, 1996, 2000, 2001
3 Free Software Foundation, Inc.
5 This file is part of GDB.
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.
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.
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. */
27 #include <sys/types.h>
28 #include <sys/param.h>
31 #include <sys/ioctl.h>
34 #include <sys/procfs.h>
36 /* Prototypes for supply_gregset etc. */
43 return (sizeof (struct user
));
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 */
60 ppc_register_u_addr (int ustart
, int regno
)
64 /* General purpose registers occupy 1 slot each in the buffer */
65 if (regno
>= gdbarch_tdep (current_gdbarch
)->ppc_gp0_regnum
66 && regno
<= gdbarch_tdep (current_gdbarch
)->ppc_gplast_regnum
)
67 u_addr
= (ustart
+ (PT_R0
+ regno
) * 4);
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);
73 /* UISA special purpose registers: 1 slot each */
74 if (regno
== PC_REGNUM
)
75 u_addr
= ustart
+ PT_NIP
* 4;
76 if (regno
== gdbarch_tdep (current_gdbarch
)->ppc_lr_regnum
)
77 u_addr
= ustart
+ PT_LNK
* 4;
78 if (regno
== gdbarch_tdep (current_gdbarch
)->ppc_cr_regnum
)
79 u_addr
= ustart
+ PT_CCR
* 4;
80 if (regno
== gdbarch_tdep (current_gdbarch
)->ppc_xer_regnum
)
81 u_addr
= ustart
+ PT_XER
* 4;
82 if (regno
== gdbarch_tdep (current_gdbarch
)->ppc_ctr_regnum
)
83 u_addr
= ustart
+ PT_CTR
* 4;
84 if (regno
== gdbarch_tdep (current_gdbarch
)->ppc_mq_regnum
)
85 u_addr
= ustart
+ PT_MQ
* 4;
86 if (regno
== gdbarch_tdep (current_gdbarch
)->ppc_ps_regnum
)
87 u_addr
= ustart
+ PT_MSR
* 4;
93 supply_gregset (gdb_gregset_t
*gregsetp
)
96 register elf_greg_t
*regp
= (elf_greg_t
*) gregsetp
;
98 for (regi
= 0; regi
< 32; regi
++)
99 supply_register (regi
, (char *) (regp
+ regi
));
101 supply_register (PC_REGNUM
, (char *) (regp
+ PT_NIP
));
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
));
118 fill_gregset (gdb_gregset_t
*gregsetp
, int regno
)
121 elf_greg_t
*regp
= (elf_greg_t
*) gregsetp
;
123 for (regi
= 0; regi
< 32; regi
++)
125 if ((regno
== -1) || regno
== regi
)
126 regcache_collect (regi
, regp
+ PT_R0
+ regi
);
129 if ((regno
== -1) || regno
== PC_REGNUM
)
130 regcache_collect (PC_REGNUM
, regp
+ PT_NIP
);
132 || regno
== gdbarch_tdep (current_gdbarch
)->ppc_lr_regnum
)
133 regcache_collect (gdbarch_tdep (current_gdbarch
)->ppc_lr_regnum
,
136 || regno
== gdbarch_tdep (current_gdbarch
)->ppc_cr_regnum
)
137 regcache_collect (gdbarch_tdep (current_gdbarch
)->ppc_cr_regnum
,
140 || regno
== gdbarch_tdep (current_gdbarch
)->ppc_xer_regnum
)
141 regcache_collect (gdbarch_tdep (current_gdbarch
)->ppc_xer_regnum
,
144 || regno
== gdbarch_tdep (current_gdbarch
)->ppc_ctr_regnum
)
145 regcache_collect (gdbarch_tdep (current_gdbarch
)->ppc_ctr_regnum
,
148 || regno
== gdbarch_tdep (current_gdbarch
)->ppc_mq_regnum
)
149 regcache_collect (gdbarch_tdep (current_gdbarch
)->ppc_mq_regnum
,
152 || regno
== gdbarch_tdep (current_gdbarch
)->ppc_ps_regnum
)
153 regcache_collect (gdbarch_tdep (current_gdbarch
)->ppc_ps_regnum
,
158 supply_fpregset (gdb_fpregset_t
* fpregsetp
)
161 for (regi
= 0; regi
< 32; regi
++)
163 supply_register (FP0_REGNUM
+ regi
, (char *) (*fpregsetp
+ regi
));
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
173 fill_fpregset (gdb_fpregset_t
*fpregsetp
, int regno
)
177 for (regi
= 0; regi
< 32; regi
++)
179 if ((regno
== -1) || (regno
== FP0_REGNUM
+ regi
))
180 regcache_collect (FP0_REGNUM
+ regi
, (char *) (*fpregsetp
+ regi
));
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