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authorStan Shebs <shebs@codesourcery.com>1999-04-16 01:35:26 +0000
committerStan Shebs <shebs@codesourcery.com>1999-04-16 01:35:26 +0000
commitc906108c21474dfb4ed285bcc0ac6fe02cd400cc (patch)
treea0015aa5cedc19ccbab307251353a41722a3ae13 /gdb/config/m68k/tm-m68kv4.h
parentcd946cff9ede3f30935803403f06f6ed30cad136 (diff)
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Initial creation of sourceware repositorygdb-4_18-branchpoint
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+/* Target definitions for GDB on a Motorola 680x0 running SVR4.
+ (Commodore Amiga with amix or Atari TT with ASV)
+ Copyright (C) 1991, 1995 Free Software Foundation, Inc.
+ Written by Fred Fish at Cygnus Support (fnf@cygint)
+
+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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+
+/* Define BPT_VECTOR if it is different than the default.
+ This is the vector number used by traps to indicate a breakpoint. */
+
+#define BPT_VECTOR 0x1
+
+/* How much to decrement the PC after a trap. Depends on kernel. */
+
+#define DECR_PC_AFTER_BREAK 0 /* No decrement required */
+
+/* Use the alternate method of determining valid frame chains. */
+
+#define FRAME_CHAIN_VALID(fp,fi) alternate_frame_chain_valid (fp, fi)
+
+#include "tm-sysv4.h"
+#include "m68k/tm-m68k.h"
+
+/* Offsets (in target ints) into jmp_buf. Not defined in any system header
+ file, so we have to step through setjmp/longjmp with a debugger and figure
+ them out. As a double check, note that <setjmp> defines _JBLEN as 13,
+ which matches the number of elements we see saved by setjmp(). */
+
+#define JB_ELEMENT_SIZE sizeof(int) /* jmp_buf[_JBLEN] is array of ints */
+
+#define JB_D2 0
+#define JB_D3 1
+#define JB_D4 2
+#define JB_D5 3
+#define JB_D6 4
+#define JB_D7 5
+#define JB_A1 6
+#define JB_A2 7
+#define JB_A3 8
+#define JB_A4 9
+#define JB_A5 10
+#define JB_A6 11
+#define JB_A7 12
+
+#define JB_PC JB_A1 /* Setjmp()'s return PC saved in A1 */
+
+/* Figure out where the longjmp will land. Slurp the args out of the stack.
+ We expect the first arg to be a pointer to the jmp_buf structure from which
+ we extract the pc (JB_PC) that we will land at. The pc is copied into ADDR.
+ This routine returns true on success */
+
+#define GET_LONGJMP_TARGET(ADDR) get_longjmp_target(ADDR)
+extern int get_longjmp_target PARAMS ((CORE_ADDR *));
+
+/* Convert a DWARF register number to a gdb REGNUM. */
+#define DWARF_REG_TO_REGNUM(num) ((num) < 16 ? (num) : (num)+FP0_REGNUM-16)