1 /* HP/UX native interface for HP 300's, for GDB when running under Unix.
2 Copyright 1986, 1987, 1989, 1991, 1992, 1993 Free Software Foundation, Inc.
4 This file is part of GDB.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
24 /* Defining this means some system include files define some extra stuff. */
26 #include <sys/param.h>
31 #include <sys/ptrace.h>
37 /* Get kernel_u_addr using HPUX-style nlist(). */
38 CORE_ADDR kernel_u_addr
;
44 unsigned char n_length
;
48 static struct hpnlist nl
[] = {{ "_u", -1, }, { (char *) 0, }};
50 /* read the value of the u area from the hp-ux kernel */
52 _initialize_hp300ux_nat ()
54 #ifndef HPUX_VERSION_5
56 kernel_u_addr
= nl
[0].n_value
;
57 #else /* HPUX version 5. */
58 kernel_u_addr
= (CORE_ADDR
) 0x0097900;
62 #define INFERIOR_AR0(u) \
64 (PT_RUAREA, inferior_pid, \
65 (PTRACE_ARG3_TYPE) ((char *) &u.u_ar0 - (char *) &u), 0, 0)) \
69 fetch_inferior_register (regno
, regaddr
)
71 register unsigned int regaddr
;
73 #ifndef HPUX_VERSION_5
74 if (regno
== PS_REGNUM
)
76 union { int i
; short s
[2]; } ps_val
;
79 ps_val
.i
= (ptrace (PT_RUAREA
, inferior_pid
, (PTRACE_ARG3_TYPE
) regaddr
,
82 supply_register (regno
, (char *)®val
);
85 #endif /* not HPUX_VERSION_5 */
87 char buf
[MAX_REGISTER_RAW_SIZE
];
90 for (i
= 0; i
< REGISTER_RAW_SIZE (regno
); i
+= sizeof (int))
92 *(int *) &buf
[i
] = ptrace (PT_RUAREA
, inferior_pid
,
93 (PTRACE_ARG3_TYPE
) regaddr
, 0, 0);
94 regaddr
+= sizeof (int);
96 supply_register (regno
, buf
);
102 store_inferior_register_1 (regno
, regaddr
, val
)
104 unsigned int regaddr
;
108 ptrace (PT_WUAREA
, inferior_pid
, (PTRACE_ARG3_TYPE
) regaddr
, val
, 0);
110 /* HP-UX randomly sets errno to non-zero for regno == 25.
111 However, the value is correctly written, so ignore errno. */
116 sprintf (string_buf
, "writing register number %d", regno
);
117 perror_with_name (string_buf
);
124 store_inferior_register (regno
, regaddr
)
126 register unsigned int regaddr
;
128 #ifndef HPUX_VERSION_5
129 if (regno
== PS_REGNUM
)
131 union { int i
; short s
[2]; } ps_val
;
133 ps_val
.i
= (ptrace (PT_RUAREA
, inferior_pid
, (PTRACE_ARG3_TYPE
) regaddr
,
135 ps_val
.s
[0] = (read_register (regno
));
136 store_inferior_register_1 (regno
, regaddr
, ps_val
.i
);
139 #endif /* not HPUX_VERSION_5 */
141 char buf
[MAX_REGISTER_RAW_SIZE
];
143 extern char registers
[];
145 for (i
= 0; i
< REGISTER_RAW_SIZE (regno
); i
+= sizeof (int))
147 store_inferior_register_1
149 (*(int *) ®isters
[(REGISTER_BYTE (regno
)) + i
]));
150 regaddr
+= sizeof (int);
157 fetch_inferior_registers (regno
)
161 register unsigned int ar0_offset
;
163 ar0_offset
= (INFERIOR_AR0 (u
));
166 for (regno
= 0; (regno
< FP0_REGNUM
); regno
++)
167 fetch_inferior_register (regno
, (REGISTER_ADDR (ar0_offset
, regno
)));
168 for (; (regno
< NUM_REGS
); regno
++)
169 fetch_inferior_register (regno
, (FP_REGISTER_ADDR (u
, regno
)));
172 fetch_inferior_register (regno
,
174 ? REGISTER_ADDR (ar0_offset
, regno
)
175 : FP_REGISTER_ADDR (u
, regno
)));
178 /* Store our register values back into the inferior.
179 If REGNO is -1, do this for all registers.
180 Otherwise, REGNO specifies which register (so we can save time). */
183 store_inferior_registers (regno
)
187 register unsigned int ar0_offset
;
188 extern char registers
[];
190 if (regno
>= FP0_REGNUM
)
192 store_inferior_register (regno
, (FP_REGISTER_ADDR (u
, regno
)));
196 ar0_offset
= (INFERIOR_AR0 (u
));
199 store_inferior_register (regno
, (REGISTER_ADDR (ar0_offset
, regno
)));
203 for (regno
= 0; (regno
< FP0_REGNUM
); regno
++)
204 store_inferior_register (regno
, (REGISTER_ADDR (ar0_offset
, regno
)));
205 for (; (regno
< NUM_REGS
); regno
++)
206 store_inferior_register (regno
, (FP_REGISTER_ADDR (u
, regno
)));