Initial revision

1 files changed, 147 insertions, 0 deletions

diff --git a/gdb/xm-tahoe.h b/gdb/xm-tahoe.h
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+/* Definitions to make GDB hosted on a tahoe running 4.3-Reno
+   Copyright (C) 1986, 1987, 1989, 1991 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.  */
+
+/*
+ * Ported by the State University of New York at Buffalo by the Distributed
+ * Computer Systems Lab, Department of Computer Science, 1991.
+ */
+
+/*
+ * These first two are kludges to get this thing to compile under Reno (or
+ * at least the Reno running on okeeffe). It seems there are a few problems
+ * with the include files.
+ */
+
+/* to compile infrun.c -
+   don't allow sys/dir.h to be included, it gets redefined and
+   by ufs/dir.h and screws up my life! */
+#define _DIRENT_
+
+/* to compile remote.c -
+   when sys/ioctl.h get's called we need USE_OLD_TTY defined
+   so that ioctl_compat.h will be included.  latter, sgtty.h
+   tries to define USE_OLD_TTY and call sys/ioctl.h but it's
+   too late */
+#define USE_OLD_TTY
+
+/* Get rid of any system-imposed stack limit if possible.  */
+
+#define SET_STACK_LIMIT_HUGE
+
+#define REGISTER_U_ADDR(addr, blockend, regno)		\
+{ addr = blockend - 100 + regno * 4;			\
+  if (regno == PC_REGNUM) addr = blockend - 8;		\
+  if (regno == PS_REGNUM) addr = blockend - 4;		\
+  if (regno == FP_REGNUM) addr = blockend - 40;	        \
+  if (regno == SP_REGNUM) addr = blockend - 36;         \
+  if (regno == AL_REGNUM) addr = blockend - 20;       \
+  if (regno == AH_REGNUM) addr = blockend - 24;}
+
+/* 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, SIGKILL, SIGSEGV, 0, 0, 0, 0, 0, \
+  0, 0, SIGTRAP, SIGTRAP, 0, 0, 0, 0, \
+  0, 0, 0, 0, 0, 0, 0, 0}
+
+/* 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 ("pushl fp");
+
+/* 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 ("pushl 8(sp)");        \
+  asm ("pushl 8(sp)");        \
+  asm ("pushal 0x41(sp)");    \
+  asm ("pushl r0" );       \
+  asm ("pushl r1" );       \
+  asm ("pushl r2" );       \
+  asm ("pushl r3" );       \
+  asm ("pushl r4" );       \
+  asm ("pushl r5" );       \
+  asm ("pushl r6" );       \
+  asm ("pushl r7" );       \
+  asm ("pushl r8" );       \
+  asm ("pushl r9" );       \
+  asm ("pushl r10" );       \
+  asm ("pushl r11" );       \
+  asm ("pushl r12" );       \
+  asm ("pushl fp" );       \
+  asm ("pushl sp" );       \
+  asm ("pushl pc" );       \
+  asm ("pushl ps" );       \
+  asm ("pushl aclo" );       \
+  asm ("pushl achi" );       \
+}
+
+/* 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 ("movl (sp)+, achi");   \
+  asm ("movl (sp)+, aclo");   \
+  asm ("movl (sp)+, ps");   \
+  asm ("movl (sp)+, pc");   \
+  asm ("movl (sp)+, sp");   \
+  asm ("movl (sp)+, fp");   \
+  asm ("movl (sp)+, r12");   \
+  asm ("movl (sp)+, r11");   \
+  asm ("movl (sp)+, r10");   \
+  asm ("movl (sp)+, r9");   \
+  asm ("movl (sp)+, r8");   \
+  asm ("movl (sp)+, r7");   \
+  asm ("movl (sp)+, r6");   \
+  asm ("movl (sp)+, r5");   \
+  asm ("movl (sp)+, r4");   \
+  asm ("movl (sp)+, r3");   \
+  asm ("movl (sp)+, r2");   \
+  asm ("movl (sp)+, r1");   \
+  asm ("movl (sp)+, r0");   \
+  asm ("subl2 $8,(sp)");   \
+  asm ("movl (sp),sp");    \
+  asm ("rei"); }