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dd3b648e RP |
1 | /* Sun-3 Machine-dependent code which would otherwise be in inflow.c and core.c, |
2 | for GDB, the GNU debugger. | |
3 | Copyright (C) 1986, 1987, 1989 Free Software Foundation, Inc. | |
4 | ||
5 | This file is part of GDB. | |
6 | ||
7 | GDB 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 1, or (at your option) | |
10 | any later version. | |
11 | ||
12 | GDB 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. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GDB; see the file COPYING. If not, write to | |
19 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
20 | ||
21 | #include <stdio.h> | |
22 | #include "defs.h" | |
23 | #include "param.h" | |
24 | #include "inferior.h" | |
25 | ||
26 | #include <sys/ptrace.h> | |
27 | #define KERNEL /* To get floating point reg definitions */ | |
28 | #include <machine/reg.h> | |
29 | ||
30 | #include "gdbcore.h" | |
31 | ||
32 | extern int errno; | |
33 | ||
34 | void | |
35 | fetch_inferior_registers () | |
36 | { | |
37 | struct regs inferior_registers; | |
38 | #ifdef FP0_REGNUM | |
39 | struct fp_status inferior_fp_registers; | |
40 | #endif | |
41 | extern char registers[]; | |
42 | ||
43 | registers_fetched (); | |
44 | ||
45 | ptrace (PTRACE_GETREGS, inferior_pid, &inferior_registers); | |
46 | #ifdef FP0_REGNUM | |
47 | ptrace (PTRACE_GETFPREGS, inferior_pid, &inferior_fp_registers); | |
48 | #endif | |
49 | ||
50 | bcopy (&inferior_registers, registers, 16 * 4); | |
51 | #ifdef FP0_REGNUM | |
52 | bcopy (&inferior_fp_registers, ®isters[REGISTER_BYTE (FP0_REGNUM)], | |
53 | sizeof inferior_fp_registers.fps_regs); | |
54 | #endif | |
55 | *(int *)®isters[REGISTER_BYTE (PS_REGNUM)] = inferior_registers.r_ps; | |
56 | *(int *)®isters[REGISTER_BYTE (PC_REGNUM)] = inferior_registers.r_pc; | |
57 | #ifdef FP0_REGNUM | |
58 | bcopy (&inferior_fp_registers.fps_control, | |
59 | ®isters[REGISTER_BYTE (FPC_REGNUM)], | |
60 | sizeof inferior_fp_registers - sizeof inferior_fp_registers.fps_regs); | |
61 | #endif | |
62 | } | |
63 | ||
64 | /* Store our register values back into the inferior. | |
65 | If REGNO is -1, do this for all registers. | |
66 | Otherwise, REGNO specifies which register (so we can save time). */ | |
67 | ||
68 | store_inferior_registers (regno) | |
69 | int regno; | |
70 | { | |
71 | struct regs inferior_registers; | |
72 | #ifdef FP0_REGNUM | |
73 | struct fp_status inferior_fp_registers; | |
74 | #endif | |
75 | extern char registers[]; | |
76 | ||
77 | bcopy (registers, &inferior_registers, 16 * 4); | |
78 | #ifdef FP0_REGNUM | |
79 | bcopy (®isters[REGISTER_BYTE (FP0_REGNUM)], &inferior_fp_registers, | |
80 | sizeof inferior_fp_registers.fps_regs); | |
81 | #endif | |
82 | inferior_registers.r_ps = *(int *)®isters[REGISTER_BYTE (PS_REGNUM)]; | |
83 | inferior_registers.r_pc = *(int *)®isters[REGISTER_BYTE (PC_REGNUM)]; | |
84 | ||
85 | #ifdef FP0_REGNUM | |
86 | bcopy (®isters[REGISTER_BYTE (FPC_REGNUM)], | |
87 | &inferior_fp_registers.fps_control, | |
88 | sizeof inferior_fp_registers - sizeof inferior_fp_registers.fps_regs); | |
89 | #endif | |
90 | ||
91 | ptrace (PTRACE_SETREGS, inferior_pid, &inferior_registers); | |
92 | #if FP0_REGNUM | |
93 | ptrace (PTRACE_SETFPREGS, inferior_pid, &inferior_fp_registers); | |
94 | #endif | |
95 | } | |
96 | ||
97 | /* Machine-dependent code for pulling registers out of a Sun-3 core file. */ | |
98 | ||
99 | void | |
100 | fetch_core_registers (core_reg_sect, core_reg_size, which) | |
101 | char *core_reg_sect; | |
102 | unsigned core_reg_size; | |
103 | int which; | |
104 | { | |
105 | extern char registers[]; | |
106 | struct regs *regs = (struct regs *) core_reg_sect; | |
107 | ||
108 | if (which == 0) { | |
109 | if (core_reg_size < sizeof (struct regs)) | |
110 | error ("Can't find registers in core file"); | |
111 | ||
112 | bcopy ((char *)regs, registers, 16 * 4); | |
113 | supply_register (PS_REGNUM, ®s->r_ps); | |
114 | supply_register (PC_REGNUM, ®s->r_pc); | |
115 | ||
116 | } else if (which == 2) { | |
117 | ||
118 | #define fpustruct ((struct fpu *) core_reg_sect) | |
119 | ||
120 | if (core_reg_size >= sizeof (struct fpu)) | |
121 | { | |
f2ebc25f | 122 | #ifdef FP0_REGNUM |
dd3b648e RP |
123 | bcopy (fpustruct->f_fpstatus.fps_regs, |
124 | ®isters[REGISTER_BYTE (FP0_REGNUM)], | |
125 | sizeof fpustruct->f_fpstatus.fps_regs); | |
126 | bcopy (&fpustruct->f_fpstatus.fps_control, | |
127 | ®isters[REGISTER_BYTE (FPC_REGNUM)], | |
128 | sizeof fpustruct->f_fpstatus - | |
129 | sizeof fpustruct->f_fpstatus.fps_regs); | |
f2ebc25f | 130 | #endif |
dd3b648e RP |
131 | } |
132 | else | |
133 | fprintf (stderr, "Couldn't read float regs from core file\n"); | |
134 | } | |
135 | } |