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Diffstat (limited to 'gdb/xm-altos.h')
| -rw-r--r-- | gdb/xm-altos.h | 208 |
1 files changed, 208 insertions, 0 deletions
diff --git a/gdb/xm-altos.h b/gdb/xm-altos.h new file mode 100644 index 0000000..3a4dc5f --- /dev/null +++ b/gdb/xm-altos.h @@ -0,0 +1,208 @@ +/* Definitions to make GDB run on an Altos 3068 (m68k running SVR2) + Copyright (C) 1987,1989 Free Software Foundation, Inc. + +This file is part of GDB. + +GDB 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 1, or (at your option) +any later version. + +GDB 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 GDB; see the file COPYING. If not, write to +the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ + +#define HOST_BYTE_ORDER BIG_ENDIAN + +/* The altos support would make a good base for a port to other USGR2 systems + (like the 3b1 and the Convergent miniframe). */ + +/* This is only needed in one file, but it's cleaner to put it here than + putting in more #ifdef's. */ +#include <sys/page.h> +#include <sys/net.h> + +#define USG + +#define HAVE_TERMIO + +#define CBREAK XTABS /* It takes all kinds... */ + +#ifndef R_OK +#define R_OK 4 +#define W_OK 2 +#define X_OK 1 +#define F_OK 0 +#endif + +#ifndef MAXPATHLEN +#define MAXPATHLEN (1024) +#endif + +/* Get sys/wait.h ie. from a Sun and edit it a little (mc68000 to m68k) */ +/* Why bother? */ +#if 0 +#define HAVE_WAIT_STRUCT +#endif + +#define vfork fork + +/* 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 0x1fbf000 + +#define REGISTER_U_ADDR(addr, blockend, regno) \ +{ if (regno <= SP_REGNUM) \ + addr = blockend + regno * 4; \ + else if (regno == PS_REGNUM) \ + addr = blockend + regno * 4 + 4; \ + else if (regno == PC_REGNUM) \ + addr = blockend + regno * 4 + 2; \ +} + +#define REGISTER_ADDR(u_ar0, regno) \ + (((regno) < PS_REGNUM) \ + ? (&((struct exception_stack *) (u_ar0))->e_regs[(regno + R0)]) \ + : (((regno) == PS_REGNUM) \ + ? ((int *) (&((struct exception_stack *) (u_ar0))->e_PS)) \ + : (&((struct exception_stack *) (u_ar0))->e_PC))) + +#define FP_REGISTER_ADDR(u, regno) \ + (((char *) \ + (((regno) < FPC_REGNUM) \ + ? (&u.u_pcb.pcb_mc68881[FMC68881_R0 + (((regno) - FP0_REGNUM) * 3)]) \ + : (&u.u_pcb.pcb_mc68881[FMC68881_C + ((regno) - FPC_REGNUM)]))) \ + - ((char *) (& u))) + + +#ifndef __GNUC__ +#undef USE_GAS +#define ALTOS_AS +#else +#define USE_GAS +#endif + +/* Motorola assembly format */ +#if !defined(USE_GAS) && !defined(ALTOS) +#define MOTOROLA +#endif + +/* 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. */ + +#ifdef MOTOROLA +#define INIT_STACK(beg, end) \ +{ asm (".globl end"); \ + asm ("move.l $ end, sp"); \ + asm ("clr.l fp"); } +#else +#ifdef ALTOS_AS +#define INIT_STACK(beg, end) \ +{ asm ("global end"); \ + asm ("mov.l &end,%sp"); \ + asm ("clr.l %fp"); } +#else +#define INIT_STACK(beg, end) \ +{ asm (".globl end"); \ + asm ("movel $ end, sp"); \ + asm ("clrl fp"); } +#endif +#endif + +/* Push the frame pointer register on the stack. */ +#ifdef MOTOROLA +#define PUSH_FRAME_PTR \ + asm ("move.l fp, -(sp)"); +#else +#ifdef ALTOS_AS +#define PUSH_FRAME_PTR \ + asm ("mov.l %fp, -(%sp)"); +#else +#define PUSH_FRAME_PTR \ + asm ("movel fp, -(sp)"); +#endif +#endif + +/* Copy the top-of-stack to the frame pointer register. */ +#ifdef MOTOROLA +#define POP_FRAME_PTR \ + asm ("move.l (sp), fp"); +#else +#ifdef ALTOS_AS +#define POP_FRAME_PTR \ + asm ("mov.l (%sp), %fp"); +#else +#define POP_FRAME_PTR \ + asm ("movl (sp), fp"); +#endif +#endif + +/* 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. */ + +#ifdef MOTOROLA +#define PUSH_REGISTERS \ +{ asm ("clr.w -(sp)"); \ + asm ("pea (10,sp)"); \ + asm ("movem $ 0xfffe,-(sp)"); } +#else +#ifdef ALTOS_AS +#define PUSH_REGISTERS \ +{ asm ("clr.w -(%sp)"); \ + asm ("pea (10,%sp)"); \ + asm ("movm.l &0xfffe,-(%sp)"); } +#else +#define PUSH_REGISTERS \ +{ asm ("clrw -(sp)"); \ + asm ("pea 10(sp)"); \ + asm ("movem $ 0xfffe,-(sp)"); } +#endif +#endif + +/* 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. */ + +#ifdef MOTOROLA +#define POP_REGISTERS \ +{ asm ("subi.l $8,28(sp)"); \ + asm ("movem (sp),$ 0xffff"); \ + asm ("rte"); } +#else +#ifdef ALTOS_AS +#define POP_REGISTERS \ +{ asm ("sub.l &8,28(%sp)"); \ + asm ("movem (%sp),&0xffff"); \ + asm ("rte"); } +#else +#define POP_REGISTERS \ +{ asm ("subil $8,28(sp)"); \ + asm ("movem (sp),$ 0xffff"); \ + asm ("rte"); } +#endif +#endif |