Johns release

1 files changed, 105 insertions, 0 deletions

diff --git a/gdb/xm-pyr.h b/gdb/xm-pyr.h
new file mode 100644
index 0000000..8a01569
--- /dev/null
+++ b/gdb/xm-pyr.h
@@ -0,0 +1,105 @@
+/* Definitions to make GDB run on a Pyramidax under OSx 4.0 (4.2bsd).
+   Copyright (C) 1988, 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
+
+/* Define PYRAMID_CONTROL_FRAME_DEBUGGING to get copious messages
+   about reading the control stack on standard output. This
+   makes gdb unusable as a debugger. */
+
+/* #define PYRAMID_CONTROL_FRAME_DEBUGGING */
+
+/* Define PYRAMID_FRAME_DEBUGGING for ? */
+
+/* use Pyramid's slightly strange ptrace */
+#define PYRAMID_PTRACE
+
+/* Traditional Unix virtual address spaces have thre regions: text,
+   data and stack.  The text, initialised data, and uninitialised data
+   are represented in separate segments of the a.out file.
+   When a process dumps core, the data and stack regions are written
+   to a core file.  This gives a debugger enough information to
+   reconstruct (and debug) the virtual address space at the time of
+   the coredump.
+   Pyramids have an distinct fourth region of the virtual address
+   space, in which the contents of the windowed registers are stacked
+   in fixed-size frames.  Pyramid refer to this region as the control
+   stack.  Each call (or trap) automatically allocates a new register
+   frame; each return deallocates the current frame and restores the
+   windowed registers to their values before the call.
+
+   When dumping core, the control stack is written to a core files as
+   a third segment. The core-handling functions need to know to deal
+   with it. */ 
+
+/* Tell dep.c what the extra segment is.  */
+#define PYRAMID_CORE
+
+#define NO_SIGINTERRUPT
+
+#define HAVE_WAIT_STRUCT
+
+/* Get rid of any system-imposed stack limit if possible.  */
+
+#define SET_STACK_LIMIT_HUGE
+
+/* 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 (0x80000000 - (UPAGES * NBPG))
+
+/* Define offsets of registers in the core file (or maybe u area) */
+#define REGISTER_U_ADDR(addr, blockend, regno)	\
+{ struct user __u;					\
+  addr = blockend  + (regno - 16 ) * 4;			\
+  if (regno == 67) {   					\
+      printf("\\geting reg 67\\");			\
+      addr = (int)(&__u.u_pcb.pcb_csp) - (int) &__u;	\
+  } else if (regno == KSP_REGNUM) {			\
+      printf("\\geting KSP (reg %d)\\", KSP_REGNUM);	\
+      addr = (int)(&__u.u_pcb.pcb_ksp) - (int) &__u;	\
+  } else if (regno == CSP_REGNUM) {			\
+      printf("\\geting CSP (reg %d\\",CSP_REGNUM);	\
+      addr = (int)(&__u.u_pcb.pcb_csp) - (int) &__u;	\
+  } else if (regno == 64) {				\
+      printf("\\geting reg 64\\");			\
+      addr = (int)(&__u.u_pcb.pcb_csp) - (int) &__u;	\
+   } else if (regno == PS_REGNUM)			\
+      addr = blockend - 4;				\
+  else if (1 && ((16 > regno) && (regno > 11)))		\
+      addr = last_frame_offset + (4 *(regno+32));	\
+  else if (0 && (12 > regno)) 				\
+      addr = global_reg_offset + (4 *regno);		\
+  else if (16 > regno)	 				\
+      addr = global_reg_offset + (4 *regno);		\
+ else							\
+      addr = blockend  + (regno - 16 ) * 4;		\
+}
+
+/* Override copies of {fetch,store}_inferior_registers in infptrace.c.  */
+#define FETCH_INFERIOR_REGISTERS
+
+/* Compensate for lack of `vprintf' function.  */
+#define MISSING_VPRINTF
+
+
+/* Interface definitions for kernel debugger KDB.  */
+
+/* I have *no idea* how to debug OSx kernels, so this
+   is flushed, possible forever. */