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Diffstat (limited to 'gdb/config/m68k/xm-isi.h')
| -rw-r--r-- | gdb/config/m68k/xm-isi.h | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/gdb/config/m68k/xm-isi.h b/gdb/config/m68k/xm-isi.h new file mode 100644 index 00000000000..4e75333fcbb --- /dev/null +++ b/gdb/config/m68k/xm-isi.h @@ -0,0 +1,92 @@ +/* Definitions to make GDB run on an ISI Optimum V (3.05) under 4.3bsd. + Copyright 1987, 1989, 1992 Free Software Foundation, Inc. + +This file is part of GDB. + +This program is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2 of the License, or +(at your option) any later version. + +This program is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with this program; if not, write to the Free Software +Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + +#define HOST_BYTE_ORDER BIG_ENDIAN + +/* This has not been tested on ISI's running BSD 4.2, but it will probably + work. */ + +/* This is the amount to subtract from u.u_ar0 + to get the offset in the core file of the register values. */ + +/*#define KERNEL_U_ADDR 0x10800000*/ +#define KERNEL_U_ADDR 0 + +/* expects blockend to be u.u_ar0 */ +extern int rloc[]; /* Defined in isi-dep.c */ +#define REGISTER_U_ADDR(addr, blockend, regno) \ +{ blockend &= UPAGES*NBPG - 1; \ + if (regno < 18) addr = (int)blockend + rloc[regno]*4; \ + else if (regno < 26) addr = (int) &((struct user *)0)->u_68881_regs \ + + (regno - 18) * 12; \ + else if (regno < 29) addr = (int) &((struct user *)0)->u_68881_regs \ + + 8 * 12 + (regno - 26) * 4; \ +} + +/* Interface definitions for kernel debugger KDB. */ + +/* Map machine fault codes into signal numbers. + First subtract 0, divide by 4, then index in a table. + Faults for which the entry in this table is 0 + are not handled by KDB; the program's own trap handler + gets to handle then. */ + +#define FAULT_CODE_ORIGIN 0 +#define FAULT_CODE_UNITS 4 +#define FAULT_TABLE \ +{ 0, 0, 0, 0, SIGTRAP, 0, 0, 0, \ + 0, SIGTRAP, 0, 0, 0, 0, 0, SIGKILL, \ + 0, 0, 0, 0, 0, 0, 0, 0, \ + SIGILL } + +/* Start running with a stack stretching from BEG to END. + BEG and END should be symbols meaningful to the assembler. + This is used only for kdb. */ + +#define INIT_STACK(beg, end) \ +{ asm (".globl end"); \ + asm ("movl $ end, sp"); \ + asm ("clrl fp"); } + +/* Push the frame pointer register on the stack. */ +#define PUSH_FRAME_PTR \ + asm ("movel fp, -(sp)"); + +/* Copy the top-of-stack to the frame pointer register. */ +#define POP_FRAME_PTR \ + asm ("movl (sp), fp"); + +/* After KDB is entered by a fault, push all registers + that GDB thinks about (all NUM_REGS of them), + so that they appear in order of ascending GDB register number. + The fault code will be on the stack beyond the last register. */ + +#define PUSH_REGISTERS \ +{ asm ("clrw -(sp)"); \ + asm ("pea 10(sp)"); \ + asm ("movem $ 0xfffe,-(sp)"); } + +/* Assuming the registers (including processor status) have been + pushed on the stack in order of ascending GDB register number, + restore them and return to the address in the saved PC register. */ + +#define POP_REGISTERS \ +{ asm ("subil $8,28(sp)"); \ + asm ("movem (sp),$ 0xffff"); \ + asm ("rte"); } |