From 2fa73738cf209d54339b057f5e0fcdd879ba2ba4 Mon Sep 17 00:00:00 2001
From: Kung Hsu <kung@cygnus>
Date: Tue, 1 Mar 1994 01:57:46 +0000
Subject: [PATCH] Added Files: 	i386os9k.mt tm-i386os9k.h

	* i386os9k.mt: newly add i386/os9000 make file.
	* tm-i386os9k.h: newly add i386/os9000 target dependent .h file.
---
 gdb/config/i386/i386os9k.mt   |  3 ++
 gdb/config/i386/tm-i386os9k.h | 87 +++++++++++++++++++++++++++++++++++
 2 files changed, 90 insertions(+)
 create mode 100644 gdb/config/i386/i386os9k.mt
 create mode 100644 gdb/config/i386/tm-i386os9k.h

diff --git a/gdb/config/i386/i386os9k.mt b/gdb/config/i386/i386os9k.mt
new file mode 100644
index 00000000000..78ae18bf86a
--- /dev/null
+++ b/gdb/config/i386/i386os9k.mt
@@ -0,0 +1,3 @@
+# Target: Intel 386 running BSD
+TDEPFILES= exec.o i386-tdep.o i386-pinsn.o remote-os9k.o
+TM_FILE= tm-i386os9k.h
diff --git a/gdb/config/i386/tm-i386os9k.h b/gdb/config/i386/tm-i386os9k.h
new file mode 100644
index 00000000000..253b8c1ef7a
--- /dev/null
+++ b/gdb/config/i386/tm-i386os9k.h
@@ -0,0 +1,87 @@
+/* Macro definitions for i386 running under BSD Unix.
+   Copyright 1986, 1987, 1989, 1991, 1992, 1993 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., 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+/* Override number of expected traps from sysv. */
+#define START_INFERIOR_TRAPS_EXPECTED 2
+
+/* Most definitions from sysv could be used. */
+#include "i386/tm-i386v.h"
+
+/* 386BSD cannot handle the segment registers. */
+/* BSDI can't handle them either.  */
+#if 0
+#undef NUM_REGS
+#define NUM_REGS 10
+#endif 0
+
+#undef REGISTER_NAMES
+#define REGISTER_NAMES { "eax", "ecx", "edx", "ebx", \
+                         "esp", "ebp", "esi", "edi", \
+                         "eip", "eflags", "cs", "ss", \
+                         "ds", "es", "fs", "gs", \
+                         }
+
+#define DATABASE_REG 	3		/* ebx */
+
+/* On 386 bsd, sigtramp is above the user stack and immediately below
+   the user area. Using constants here allows for cross debugging.
+   These are tested for BSDI but should work on 386BSD.  */
+#define SIGTRAMP_START	0xfdbfdfc0
+#define SIGTRAMP_END	0xfdbfe000
+
+/* The following redefines make backtracing through sigtramp work.
+   They manufacture a fake sigtramp frame and obtain the saved pc in sigtramp
+   from the sigcontext structure which is pushed by the kernel on the
+   user stack, along with a pointer to it.  */
+
+/* FRAME_CHAIN takes a frame's nominal address and produces the frame's
+   chain-pointer.
+   In the case of the i386, the frame's nominal address
+   is the address of a 4-byte word containing the calling frame's address.  */
+#undef FRAME_CHAIN
+#define FRAME_CHAIN(thisframe)  \
+  (thisframe->signal_handler_caller \
+   ? thisframe->frame \
+   : (!inside_entry_file ((thisframe)->pc) \
+      ? read_memory_integer ((thisframe)->frame, 4) \
+      : 0))
+
+/* A macro that tells us whether the function invocation represented
+   by FI does not have a frame on the stack associated with it.  If it
+   does not, FRAMELESS is set to 1, else 0.  */
+#undef FRAMELESS_FUNCTION_INVOCATION
+#define FRAMELESS_FUNCTION_INVOCATION(FI, FRAMELESS) \
+  do { \
+    if ((FI)->signal_handler_caller) \
+      (FRAMELESS) = 0; \
+    else \
+      (FRAMELESS) = frameless_look_for_prologue(FI); \
+  } while (0)
+
+/* Saved Pc.  Get it from sigcontext if within sigtramp.  */
+
+/* Offset to saved PC in sigcontext, from <sys/signal.h>.  */
+#define SIGCONTEXT_PC_OFFSET 20
+
+#undef FRAME_SAVED_PC(FRAME)
+#define FRAME_SAVED_PC(FRAME) \
+  (((FRAME)->signal_handler_caller \
+    ? sigtramp_saved_pc (FRAME) \
+    : read_memory_integer ((FRAME)->frame + 4, 4)) \
+   )
-- 
2.30.2