1 /* Native-dependent Motorola 88xxx support for GDB, the GNU Debugger.
2 Copyright 1988, 1990, 1991, 1992, 1993, 1995, 1999, 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,
20 Boston, MA 02111-1307, USA. */
27 #include <sys/types.h>
28 #include <sys/param.h>
34 #ifndef USER /* added to support BCS ptrace_user */
35 #define USER ptrace_user
37 #include <sys/ioctl.h>
47 #include <sys/ptrace.h>
49 /* define offsets to the pc instruction offsets in ptrace_user struct */
50 #define SXIP_OFFSET ((char *)&u.pt_sigframe.sig_sxip - (char *)&u)
51 #define SNIP_OFFSET ((char *)&u.pt_sigframe.sig_snip - (char *)&u)
52 #define SFIP_OFFSET ((char *)&u.pt_sigframe.sig_sfip - (char *)&u)
54 /* define offsets to the pc instruction offsets in ptrace_user struct */
55 #define SXIP_OFFSET ((char *)&u.pt_sigframe.dg_sigframe.sc_sxip - (char *)&u)
56 #define SNIP_OFFSET ((char *)&u.pt_sigframe.dg_sigframe.sc_snip - (char *)&u)
57 #define SFIP_OFFSET ((char *)&u.pt_sigframe.dg_sigframe.sc_sfip - (char *)&u)
60 extern int have_symbol_file_p ();
62 extern jmp_buf stack_jmp
;
67 fetch_inferior_registers (int regno
)
69 register unsigned int regaddr
;
70 char buf
[MAX_REGISTER_RAW_SIZE
];
76 offset
= (char *) &u
.pt_r0
- (char *) &u
;
77 regaddr
= offset
; /* byte offset to r0; */
79 /* offset = ptrace (3, PIDGET (inferior_ptid), (PTRACE_ARG3_TYPE) offset, 0) - KERNEL_U_ADDR; */
80 for (regno
= 0; regno
< NUM_REGS
; regno
++)
82 /*regaddr = register_addr (regno, offset); */
85 for (i
= 0; i
< REGISTER_RAW_SIZE (regno
); i
+= sizeof (int))
87 *(int *) &buf
[i
] = ptrace (3, PIDGET (inferior_ptid
),
88 (PTRACE_ARG3_TYPE
) regaddr
, 0);
89 regaddr
+= sizeof (int);
91 supply_register (regno
, buf
);
93 /* now load up registers 36 - 38; special pc registers */
94 *(int *) &buf
[0] = ptrace (3, PIDGET (inferior_ptid
),
95 (PTRACE_ARG3_TYPE
) SXIP_OFFSET
, 0);
96 supply_register (SXIP_REGNUM
, buf
);
97 *(int *) &buf
[0] = ptrace (3, PIDGET (inferior_ptid
),
98 (PTRACE_ARG3_TYPE
) SNIP_OFFSET
, 0);
99 supply_register (SNIP_REGNUM
, buf
);
100 *(int *) &buf
[0] = ptrace (3, PIDGET (inferior_ptid
),
101 (PTRACE_ARG3_TYPE
) SFIP_OFFSET
, 0);
102 supply_register (SFIP_REGNUM
, buf
);
105 /* Store our register values back into the inferior.
106 If REGNO is -1, do this for all registers.
107 Otherwise, REGNO specifies which register (so we can save time). */
110 store_inferior_registers (int regno
)
112 register unsigned int regaddr
;
117 unsigned int offset
= (char *) &u
.pt_r0
- (char *) &u
;
121 /* Don't try to deal with EXIP_REGNUM or ENIP_REGNUM, because I think either
122 svr3 doesn't run on an 88110, or the kernel isolates the different (not
123 completely sure this is true, but seems to be. */
126 /* regaddr = register_addr (regno, offset); */
127 if (regno
< PC_REGNUM
)
129 regaddr
= offset
+ regno
* sizeof (int);
131 ptrace (6, PIDGET (inferior_ptid
),
132 (PTRACE_ARG3_TYPE
) regaddr
, read_register (regno
));
135 sprintf (buf
, "writing register number %d", regno
);
136 perror_with_name (buf
);
139 else if (regno
== SXIP_REGNUM
)
140 ptrace (6, PIDGET (inferior_ptid
),
141 (PTRACE_ARG3_TYPE
) SXIP_OFFSET
, read_register (regno
));
142 else if (regno
== SNIP_REGNUM
)
143 ptrace (6, PIDGET (inferior_ptid
),
144 (PTRACE_ARG3_TYPE
) SNIP_OFFSET
, read_register (regno
));
145 else if (regno
== SFIP_REGNUM
)
146 ptrace (6, PIDGET (inferior_ptid
),
147 (PTRACE_ARG3_TYPE
) SFIP_OFFSET
, read_register (regno
));
149 printf_unfiltered ("Bad register number for store_inferior routine\n");
153 for (regno
= 0; regno
< PC_REGNUM
; regno
++)
155 /* regaddr = register_addr (regno, offset); */
157 regaddr
= offset
+ regno
* sizeof (int);
158 ptrace (6, PIDGET (inferior_ptid
),
159 (PTRACE_ARG3_TYPE
) regaddr
, read_register (regno
));
162 sprintf (buf
, "writing register number %d", regno
);
163 perror_with_name (buf
);
166 ptrace (6, PIDGET (inferior_ptid
),
167 (PTRACE_ARG3_TYPE
) SXIP_OFFSET
, read_register (SXIP_REGNUM
));
168 ptrace (6, PIDGET (inferior_ptid
),
169 (PTRACE_ARG3_TYPE
) SNIP_OFFSET
, read_register (SNIP_REGNUM
));
170 ptrace (6, PIDGET (inferior_ptid
),
171 (PTRACE_ARG3_TYPE
) SFIP_OFFSET
, read_register (SFIP_REGNUM
));
176 /* blockend is the address of the end of the user structure */
177 m88k_register_u_addr (int blockend
, int regnum
)
180 int ustart
= blockend
- sizeof (struct USER
);
215 return (ustart
+ ((int) &u
.pt_r0
- (int) &u
) + REGISTER_SIZE
* regnum
);
217 return (ustart
+ ((int) &u
.pt_psr
- (int) &u
));
219 return (ustart
+ ((int) &u
.pt_fpsr
- (int) &u
));
221 return (ustart
+ ((int) &u
.pt_fpcr
- (int) &u
));
223 return (ustart
+ SXIP_OFFSET
);
225 return (ustart
+ SNIP_OFFSET
);
227 return (ustart
+ SFIP_OFFSET
);
229 if (regnum
< NUM_REGS
)
230 /* The register is one of those which is not defined...
232 return (ustart
+ ((int) &u
.pt_r0
- (int) &u
));
234 return (blockend
+ REGISTER_SIZE
* regnum
);
240 #include <sys/procfs.h>
242 /* Prototypes for supply_gregset etc. */
245 /* Given a pointer to a general register set in /proc format (gregset_t *),
246 unpack the register contents and supply them as gdb's idea of the current
250 supply_gregset (gregset_t
*gregsetp
)
253 register greg_t
*regp
= (greg_t
*) gregsetp
;
255 for (regi
= 0; regi
<= SP_REGNUM
; regi
++)
256 supply_register (regi
, (char *) (regp
+ regi
));
258 supply_register (SXIP_REGNUM
, (char *) (regp
+ R_XIP
));
259 supply_register (SNIP_REGNUM
, (char *) (regp
+ R_NIP
));
260 supply_register (SFIP_REGNUM
, (char *) (regp
+ R_FIP
));
261 supply_register (PSR_REGNUM
, (char *) (regp
+ R_PSR
));
262 supply_register (FPSR_REGNUM
, (char *) (regp
+ R_FPSR
));
263 supply_register (FPCR_REGNUM
, (char *) (regp
+ R_FPCR
));
267 fill_gregset (gregset_t
*gregsetp
, int regno
)
270 register greg_t
*regp
= (greg_t
*) gregsetp
;
272 for (regi
= 0; regi
<= R_R31
; regi
++)
273 if ((regno
== -1) || (regno
== regi
))
274 *(regp
+ regi
) = *(int *) ®isters
[REGISTER_BYTE (regi
)];
276 if ((regno
== -1) || (regno
== SXIP_REGNUM
))
277 *(regp
+ R_XIP
) = *(int *) ®isters
[REGISTER_BYTE (SXIP_REGNUM
)];
278 if ((regno
== -1) || (regno
== SNIP_REGNUM
))
279 *(regp
+ R_NIP
) = *(int *) ®isters
[REGISTER_BYTE (SNIP_REGNUM
)];
280 if ((regno
== -1) || (regno
== SFIP_REGNUM
))
281 *(regp
+ R_FIP
) = *(int *) ®isters
[REGISTER_BYTE (SFIP_REGNUM
)];
282 if ((regno
== -1) || (regno
== PSR_REGNUM
))
283 *(regp
+ R_PSR
) = *(int *) ®isters
[REGISTER_BYTE (PSR_REGNUM
)];
284 if ((regno
== -1) || (regno
== FPSR_REGNUM
))
285 *(regp
+ R_FPSR
) = *(int *) ®isters
[REGISTER_BYTE (FPSR_REGNUM
)];
286 if ((regno
== -1) || (regno
== FPCR_REGNUM
))
287 *(regp
+ R_FPCR
) = *(int *) ®isters
[REGISTER_BYTE (FPCR_REGNUM
)];
290 #endif /* USE_PROC_FS */
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