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c906108c | 1 | /* Parameters for Hewlett-Packard 9000/300 native support under bsd. |
b6ba6518 KB |
2 | Copyright 1986, 1987, 1989, 1991, 1992, 1993 |
3 | Free Software Foundation, Inc. | |
c906108c | 4 | |
c5aa993b JM |
5 | This file is part of GDB. |
6 | ||
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. | |
11 | ||
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. | |
16 | ||
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. */ | |
c906108c SS |
21 | |
22 | /* Detect whether this is 4.3 or 4.4. */ | |
23 | ||
24 | #include <errno.h> | |
25 | #include <sys/param.h> | |
26 | #ifdef BSD4_4 | |
27 | ||
28 | /* BSD 4.4 alpha or better */ | |
29 | ||
30 | /* We can attach to processes using ptrace. */ | |
31 | ||
32 | #define ATTACH_DETACH | |
33 | #define PTRACE_ATTACH 10 | |
34 | #define PTRACE_DETACH 11 | |
35 | ||
36 | /* The third argument of ptrace is declared as this type. */ | |
37 | ||
38 | #define PTRACE_ARG3_TYPE caddr_t | |
39 | ||
40 | /* U_REGS_OFFSET is the offset of the registers within the u area for | |
41 | ptrace purposes. */ | |
42 | #define U_REGS_OFFSET \ | |
43 | ptrace (PT_READ_U, inferior_pid, \ | |
44 | (PTRACE_ARG3_TYPE) \ | |
45 | (offsetof (struct user, u_kproc.kp_proc.p_md.md_regs)), 0) \ | |
46 | - USRSTACK | |
47 | ||
48 | /* No user structure in 4.4, registers are relative to kernel stack | |
49 | which is fixed. */ | |
50 | #define KERNEL_U_ADDR 0xFFF00000 | |
51 | ||
52 | /* FIXME: Is ONE_PROCESS_WRITETEXT still true now that the kernel has | |
53 | copy-on-write? It not, move it to the 4.3-specific section below | |
54 | (now it is in xm-hp300bsd.h). */ | |
55 | ||
56 | #else | |
57 | ||
58 | /* This is BSD 4.3 or something like it. */ | |
59 | ||
60 | /* Get kernel u area address at run-time using BSD style nlist (). */ | |
61 | #define KERNEL_U_ADDR_BSD | |
62 | ||
63 | #endif | |
64 | ||
65 | /* This was once broken for 4.4, but probably because we had the wrong | |
66 | KERNEL_U_ADDR. */ | |
67 | ||
68 | /* This is a piece of magic that is given a register number REGNO | |
69 | and as BLOCKEND the address in the system of the end of the user structure | |
70 | and stores in ADDR the address in the kernel or core dump | |
71 | of that register. */ | |
72 | ||
73 | #define REGISTER_U_ADDR(addr, blockend, regno) \ | |
74 | { \ | |
75 | if (regno < PS_REGNUM) \ | |
76 | addr = (int) &((struct frame *)(blockend))->f_regs[regno]; \ | |
77 | else if (regno == PS_REGNUM) \ | |
78 | addr = (int) &((struct frame *)(blockend))->f_stackadj; \ | |
79 | else if (regno == PC_REGNUM) \ | |
80 | addr = (int) &((struct frame *)(blockend))->f_pc; \ | |
81 | else if (regno < FPC_REGNUM) \ | |
82 | addr = (int) \ | |
83 | &((struct user *)0)->u_pcb.pcb_fpregs.fpf_regs[((regno)-FP0_REGNUM)*3];\ | |
84 | else if (regno == FPC_REGNUM) \ | |
85 | addr = (int) &((struct user *)0)->u_pcb.pcb_fpregs.fpf_fpcr; \ | |
86 | else if (regno == FPS_REGNUM) \ | |
87 | addr = (int) &((struct user *)0)->u_pcb.pcb_fpregs.fpf_fpsr; \ | |
88 | else \ | |
89 | addr = (int) &((struct user *)0)->u_pcb.pcb_fpregs.fpf_fpiar; \ | |
90 | } |