projects / binutils.git / blame
| Commit | Line | Data |
|---|---|---|
| c906108c SS |
1 | /* Functions specific to running gdb native on a Motorola Delta Series sysV68. |
| 2 | Copyright (C) 1993, 1997-98, Free Software Foundation, Inc. | |
| 3 | ||
| c5aa993b | 4 | This file is part of GDB. |
| c906108c | 5 | |
| c5aa993b JM |
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. | |
| c906108c | 10 | |
| c5aa993b JM |
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. | |
| c906108c | 15 | |
| c5aa993b JM |
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, | |
| 19 | Boston, MA 02111-1307, USA. */ | |
| c906108c SS |
20 | |
| 21 | #include "defs.h" | |
| c5aa993b JM |
22 | #include <sys/signal.h> /* for MAXSIG in sys/user.h */ |
| 23 | #include <sys/types.h> /* for ushort in sys/dir.h */ | |
| 24 | #include <sys/dir.h> /* for struct direct in sys/user.h */ | |
| c906108c SS |
25 | #include <sys/user.h> |
| 26 | ||
| 27 | #include <nlist.h> | |
| 28 | ||
| 29 | #if !defined (offsetof) | |
| 30 | #define offsetof(TYPE, MEMBER) ((unsigned long) &((TYPE *)0)->MEMBER) | |
| 31 | #endif | |
| 32 | ||
| 33 | /* Return the address in the core dump or inferior of register REGNO. | |
| 34 | BLOCKEND is the address of the end of the user structure. */ | |
| 35 | ||
| 36 | CORE_ADDR | |
| 37 | register_addr (regno, blockend) | |
| c5aa993b JM |
38 | int regno; |
| 39 | CORE_ADDR blockend; | |
| c906108c | 40 | { |
| c5aa993b JM |
41 | static int sysv68reg[] = |
| 42 | {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, -1, 15, 16}; | |
| c906108c | 43 | |
| c5aa993b JM |
44 | if (regno >= 0 && regno < sizeof (sysv68reg) / sizeof (sysv68reg[0])) |
| 45 | return blockend + sysv68reg[regno] * 4; | |
| c906108c SS |
46 | else if (regno < FPC_REGNUM) |
| 47 | return offsetof (struct user, u_fpu.regs.reg[regno - FP0_REGNUM][0]); | |
| 48 | else if (regno == FPC_REGNUM) | |
| 49 | return offsetof (struct user, u_fpu.regs.control); | |
| 50 | else if (regno == FPS_REGNUM) | |
| 51 | return offsetof (struct user, u_fpu.regs.status); | |
| 52 | else if (regno == FPI_REGNUM) | |
| 53 | return offsetof (struct user, u_fpu.regs.iaddr); | |
| 54 | else | |
| 55 | { | |
| 56 | fprintf_unfiltered (gdb_stderr, "\ | |
| 57 | Internal error: invalid register number %d in REGISTER_U_ADDR\n", | |
| c5aa993b | 58 | regno); |
| c906108c SS |
59 | return blockend; |
| 60 | } | |
| 61 | } | |
| 62 | ||
| 63 | CORE_ADDR kernel_u_addr; | |
| 64 | ||
| 65 | /* Read the value of the u area from the kernel. */ | |
| 66 | void | |
| 67 | _initialize_delta68_nat () | |
| 68 | { | |
| 69 | struct nlist nl[2]; | |
| 70 | ||
| 71 | nl[0].n_name = "u"; | |
| 72 | nl[1].n_name = NULL; | |
| 73 | if (nlist ("/sysV68", nl) == 0 && nl[0].n_scnum != 0) | |
| 74 | kernel_u_addr = nl[0].n_value; | |
| 75 | else | |
| 76 | { | |
| 77 | perror ("Cannot get kernel u area address"); | |
| 78 | exit (1); | |
| 79 | } | |
| 80 | } | |
| 81 | ||
| 82 | clear_insn_cache () | |
| 83 | { | |
| c5aa993b JM |
84 | #ifdef MCT_TEXT /* in sys/signal.h on sysV68 R3V7.1 */ |
| 85 | memctl (0, 4096, MCT_TEXT); | |
| c906108c SS |
86 | #endif |
| 87 | } | |
| 88 | ||
| 89 | kernel_u_size () | |
| 90 | { | |
| 91 | return sizeof (struct user); | |
| 92 | } |