Johns release

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