/* Target dependent code for the Motorola 68000 series.
- Copyright (C) 1990, 1992 Free Software Foundation, Inc.
+ Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1999, 2000, 2001,
+ 2002, 2003
+ Free Software Foundation, Inc.
-This file is part of GDB.
+ 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 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.
+ 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. */
+ 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. */
#include "defs.h"
#include "frame.h"
#include "symtab.h"
-
+#include "gdbcore.h"
+#include "value.h"
+#include "gdb_string.h"
+#include "inferior.h"
+#include "regcache.h"
+#include "arch-utils.h"
+#include "osabi.h"
+
+#include "m68k-tdep.h"
\f
+
+#define P_LINKL_FP 0x480e
+#define P_LINKW_FP 0x4e56
+#define P_PEA_FP 0x4856
+#define P_MOVL_SP_FP 0x2c4f
+#define P_MOVL 0x207c
+#define P_JSR 0x4eb9
+#define P_BSR 0x61ff
+#define P_LEAL 0x43fb
+#define P_MOVML 0x48ef
+#define P_FMOVM 0xf237
+#define P_TRAP 0x4e40
+
+
+#define REGISTER_BYTES_FP (16*4 + 8 + 8*12 + 3*4)
+#define REGISTER_BYTES_NOFP (16*4 + 8)
+
+#define NUM_FREGS (NUM_REGS-24)
+
+/* Offset from SP to first arg on stack at first instruction of a function */
+
+#define SP_ARG0 (1 * 4)
+
+/* This was determined by experimentation on hp300 BSD 4.3. Perhaps
+ it corresponds to some offset in /usr/include/sys/user.h or
+ something like that. Using some system include file would
+ have the advantage of probably being more robust in the face
+ of OS upgrades, but the disadvantage of being wrong for
+ cross-debugging. */
+
+#define SIG_PC_FP_OFFSET 530
+
+#define TARGET_M68K
+
+
+#if !defined (BPT_VECTOR)
+#define BPT_VECTOR 0xf
+#endif
+
+#if !defined (REMOTE_BPT_VECTOR)
+#define REMOTE_BPT_VECTOR 1
+#endif
+
+
+static void m68k_frame_init_saved_regs (struct frame_info *frame_info);
+
+
+/* gdbarch_breakpoint_from_pc is set to m68k_local_breakpoint_from_pc
+ so m68k_remote_breakpoint_from_pc is currently not used. */
+
+static const unsigned char *
+m68k_remote_breakpoint_from_pc (CORE_ADDR *pcptr, int *lenptr)
+{
+ static unsigned char break_insn[] = {0x4e, (0x40 | REMOTE_BPT_VECTOR)};
+ *lenptr = sizeof (break_insn);
+ return break_insn;
+}
+
+static const unsigned char *
+m68k_local_breakpoint_from_pc (CORE_ADDR *pcptr, int *lenptr)
+{
+ static unsigned char break_insn[] = {0x4e, (0x40 | BPT_VECTOR)};
+ *lenptr = sizeof (break_insn);
+ return break_insn;
+}
+
+
+static int
+m68k_register_bytes_ok (long numbytes)
+{
+ return ((numbytes == REGISTER_BYTES_FP)
+ || (numbytes == REGISTER_BYTES_NOFP));
+}
+
+/* Number of bytes of storage in the actual machine representation
+ for register regnum. On the 68000, all regs are 4 bytes
+ except the floating point regs which are 12 bytes. */
+
+static int
+m68k_register_raw_size (int regnum)
+{
+ return (regnum >= FP0_REGNUM && regnum < FP0_REGNUM + 8 ? 12 : 4);
+}
+
+/* Number of bytes of storage in the program's representation
+ for register regnum. On the 68000, all regs are 4 bytes
+ except the floating point regs which are 12-byte long doubles. */
+
+static int
+m68k_register_virtual_size (int regnum)
+{
+ return (regnum >= FP0_REGNUM && regnum < FP0_REGNUM + 8 ? 12 : 4);
+}
+
+/* Return the GDB type object for the "standard" data type of data in
+ register N. This should be int for D0-D7, SR, FPCONTROL and
+ FPSTATUS, long double for FP0-FP7, and void pointer for all others
+ (A0-A7, PC, FPIADDR). Note, for registers which contain
+ addresses return pointer to void, not pointer to char, because we
+ don't want to attempt to print the string after printing the
+ address. */
+
+static struct type *
+m68k_register_virtual_type (int regnum)
+{
+ if (regnum >= FP0_REGNUM && regnum <= FP0_REGNUM + 7)
+ return builtin_type_m68881_ext;
+
+ if (regnum == M68K_FPI_REGNUM || regnum == PC_REGNUM)
+ return builtin_type_void_func_ptr;
+
+ if (regnum == M68K_FPC_REGNUM || regnum == M68K_FPS_REGNUM
+ || regnum == PS_REGNUM)
+ return builtin_type_int32;
+
+ if (regnum >= M68K_A0_REGNUM && regnum <= M68K_A0_REGNUM + 7)
+ return builtin_type_void_data_ptr;
+
+ return builtin_type_int32;
+}
+
+/* Function: m68k_register_name
+ Returns the name of the standard m68k register regnum. */
+
+static const char *
+m68k_register_name (int regnum)
+{
+ static char *register_names[] = {
+ "d0", "d1", "d2", "d3", "d4", "d5", "d6", "d7",
+ "a0", "a1", "a2", "a3", "a4", "a5", "fp", "sp",
+ "ps", "pc",
+ "fp0", "fp1", "fp2", "fp3", "fp4", "fp5", "fp6", "fp7",
+ "fpcontrol", "fpstatus", "fpiaddr", "fpcode", "fpflags"
+ };
+
+ if (regnum < 0 ||
+ regnum >= sizeof (register_names) / sizeof (register_names[0]))
+ internal_error (__FILE__, __LINE__,
+ "m68k_register_name: illegal register number %d", regnum);
+ else
+ return register_names[regnum];
+}
+
+/* Stack must be kept short aligned when doing function calls. */
+
+static CORE_ADDR
+m68k_stack_align (CORE_ADDR addr)
+{
+ return ((addr + 1) & ~1);
+}
+
+/* Index within `registers' of the first byte of the space for
+ register regnum. */
+
+static int
+m68k_register_byte (int regnum)
+{
+ if (regnum >= M68K_FPC_REGNUM)
+ return (((regnum - M68K_FPC_REGNUM) * 4) + 168);
+ else if (regnum >= FP0_REGNUM)
+ return (((regnum - FP0_REGNUM) * 12) + 72);
+ else
+ return (regnum * 4);
+}
+
+/* Store the address of the place in which to copy the structure the
+ subroutine will return. This is called from call_function. */
+
+static void
+m68k_store_struct_return (CORE_ADDR addr, CORE_ADDR sp)
+{
+ write_register (M68K_A1_REGNUM, addr);
+}
+
+/* Extract from an array regbuf containing the (raw) register state
+ a function return value of type type, and copy that, in virtual format,
+ into valbuf. This is assuming that floating point values are returned
+ as doubles in d0/d1. */
+
+static void
+m68k_deprecated_extract_return_value (struct type *type, char *regbuf,
+ char *valbuf)
+{
+ int offset = 0;
+ int typeLength = TYPE_LENGTH (type);
+
+ if (typeLength < 4)
+ offset = 4 - typeLength;
+
+ memcpy (valbuf, regbuf + offset, typeLength);
+}
+
+static CORE_ADDR
+m68k_deprecated_extract_struct_value_address (char *regbuf)
+{
+ return (*(CORE_ADDR *) (regbuf));
+}
+
+/* Write into appropriate registers a function return value
+ of type TYPE, given in virtual format. Assumes floats are passed
+ in d0/d1. */
+
+static void
+m68k_store_return_value (struct type *type, char *valbuf)
+{
+ deprecated_write_register_bytes (0, valbuf, TYPE_LENGTH (type));
+}
+
+/* Describe the pointer in each stack frame to the previous stack frame
+ (its caller). */
+
+/* DEPRECATED_FRAME_CHAIN takes a frame's nominal address and produces
+ the frame's chain-pointer. In the case of the 68000, the frame's
+ nominal address is the address of a 4-byte word containing the
+ calling frame's address. */
+
+/* If we are chaining from sigtramp, then manufacture a sigtramp frame
+ (which isn't really on the stack. I'm not sure this is right for anything
+ but BSD4.3 on an hp300. */
+
+static CORE_ADDR
+m68k_frame_chain (struct frame_info *thisframe)
+{
+ if (get_frame_type (thisframe) == SIGTRAMP_FRAME)
+ return get_frame_base (thisframe);
+ else if (!inside_entry_file (get_frame_pc (thisframe)))
+ return read_memory_unsigned_integer (get_frame_base (thisframe), 4);
+ else
+ return 0;
+}
+
+/* A function 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. */
+
+static int
+m68k_frameless_function_invocation (struct frame_info *fi)
+{
+ if (get_frame_type (fi) == SIGTRAMP_FRAME)
+ return 0;
+ else
+ return frameless_look_for_prologue (fi);
+}
+
+static CORE_ADDR
+m68k_frame_saved_pc (struct frame_info *frame)
+{
+ if (get_frame_type (frame) == SIGTRAMP_FRAME)
+ {
+ if (get_next_frame (frame))
+ return read_memory_unsigned_integer (get_frame_base (get_next_frame (frame))
+ + SIG_PC_FP_OFFSET, 4);
+ else
+ return read_memory_unsigned_integer (read_register (SP_REGNUM)
+ + SIG_PC_FP_OFFSET - 8, 4);
+ }
+ else
+ return read_memory_unsigned_integer (get_frame_base (frame) + 4, 4);
+}
+
+
+int
+delta68_in_sigtramp (CORE_ADDR pc, char *name)
+{
+ if (name != NULL)
+ return strcmp (name, "_sigcode") == 0;
+ else
+ return 0;
+}
+
+CORE_ADDR
+delta68_frame_args_address (struct frame_info *frame_info)
+{
+ /* we assume here that the only frameless functions are the system calls
+ or other functions who do not put anything on the stack. */
+ if (get_frame_type (frame_info) == SIGTRAMP_FRAME)
+ return get_frame_base (frame_info) + 12;
+ else if (frameless_look_for_prologue (frame_info))
+ {
+ /* Check for an interrupted system call */
+ if (get_next_frame (frame_info) && (get_frame_type (get_next_frame (frame_info)) == SIGTRAMP_FRAME))
+ return get_frame_base (get_next_frame (frame_info)) + 16;
+ else
+ return get_frame_base (frame_info) + 4;
+ }
+ else
+ return get_frame_base (frame_info);
+}
+
+CORE_ADDR
+delta68_frame_saved_pc (struct frame_info *frame_info)
+{
+ return read_memory_unsigned_integer (delta68_frame_args_address (frame_info)
+ + 4, 4);
+}
+
+int
+delta68_frame_num_args (struct frame_info *fi)
+{
+ int val;
+ CORE_ADDR pc = DEPRECATED_FRAME_SAVED_PC (fi);
+ int insn = read_memory_unsigned_integer (pc, 2);
+ val = 0;
+ if (insn == 0047757 || insn == 0157374) /* lea W(sp),sp or addaw #W,sp */
+ val = read_memory_integer (pc + 2, 2);
+ else if ((insn & 0170777) == 0050217 /* addql #N, sp */
+ || (insn & 0170777) == 0050117) /* addqw */
+ {
+ val = (insn >> 9) & 7;
+ if (val == 0)
+ val = 8;
+ }
+ else if (insn == 0157774) /* addal #WW, sp */
+ val = read_memory_integer (pc + 2, 4);
+ val >>= 2;
+ return val;
+}
+
+/* Insert the specified number of args and function address
+ into a call sequence of the above form stored at DUMMYNAME.
+ We use the BFD routines to store a big-endian value of known size. */
+
+static void
+m68k_fix_call_dummy (char *dummy, CORE_ADDR pc, CORE_ADDR fun, int nargs,
+ struct value **args, struct type *type, int gcc_p)
+{
+ bfd_putb32 (fun, (unsigned char *) dummy + DEPRECATED_CALL_DUMMY_START_OFFSET + 2);
+ bfd_putb32 (nargs * 4,
+ (unsigned char *) dummy + DEPRECATED_CALL_DUMMY_START_OFFSET + 8);
+}
+
+
/* Push an empty stack frame, to record the current PC, etc. */
-void
-m68k_push_dummy_frame ()
+static void
+m68k_push_dummy_frame (void)
{
register CORE_ADDR sp = read_register (SP_REGNUM);
register int regnum;
char raw_buffer[12];
sp = push_word (sp, read_register (PC_REGNUM));
- sp = push_word (sp, read_register (FP_REGNUM));
- write_register (FP_REGNUM, sp);
-#if defined (HAVE_68881)
+ sp = push_word (sp, read_register (DEPRECATED_FP_REGNUM));
+ write_register (DEPRECATED_FP_REGNUM, sp);
+
+ /* Always save the floating-point registers, whether they exist on
+ this target or not. */
for (regnum = FP0_REGNUM + 7; regnum >= FP0_REGNUM; regnum--)
{
- read_register_bytes (REGISTER_BYTE (regnum), raw_buffer, 12);
+ deprecated_read_register_bytes (REGISTER_BYTE (regnum), raw_buffer, 12);
sp = push_bytes (sp, raw_buffer, 12);
}
-#endif
- for (regnum = FP_REGNUM - 1; regnum >= 0; regnum--)
+
+ for (regnum = DEPRECATED_FP_REGNUM - 1; regnum >= 0; regnum--)
{
sp = push_word (sp, read_register (regnum));
}
/* Discard from the stack the innermost frame,
restoring all saved registers. */
-void
-m68k_pop_frame ()
+static void
+m68k_pop_frame (void)
{
- register FRAME frame = get_current_frame ();
+ register struct frame_info *frame = get_current_frame ();
register CORE_ADDR fp;
register int regnum;
- struct frame_saved_regs fsr;
- struct frame_info *fi;
char raw_buffer[12];
- fi = get_frame_info (frame);
- fp = fi -> frame;
- get_frame_saved_regs (fi, &fsr);
-#if defined (HAVE_68881)
- for (regnum = FP0_REGNUM + 7 ; regnum >= FP0_REGNUM ; regnum--)
+ fp = get_frame_base (frame);
+ m68k_frame_init_saved_regs (frame);
+ for (regnum = FP0_REGNUM + 7; regnum >= FP0_REGNUM; regnum--)
{
- if (fsr.regs[regnum])
+ if (get_frame_saved_regs (frame)[regnum])
{
- read_memory (fsr.regs[regnum], raw_buffer, 12);
- write_register_bytes (REGISTER_BYTE (regnum), raw_buffer, 12);
+ read_memory (get_frame_saved_regs (frame)[regnum], raw_buffer, 12);
+ deprecated_write_register_bytes (REGISTER_BYTE (regnum), raw_buffer,
+ 12);
}
}
-#endif
- for (regnum = FP_REGNUM - 1 ; regnum >= 0 ; regnum--)
+ for (regnum = DEPRECATED_FP_REGNUM - 1; regnum >= 0; regnum--)
{
- if (fsr.regs[regnum])
+ if (get_frame_saved_regs (frame)[regnum])
{
- write_register (regnum, read_memory_integer (fsr.regs[regnum], 4));
+ write_register (regnum,
+ read_memory_integer (get_frame_saved_regs (frame)[regnum], 4));
}
}
- if (fsr.regs[PS_REGNUM])
+ if (get_frame_saved_regs (frame)[PS_REGNUM])
{
- write_register (PS_REGNUM, read_memory_integer (fsr.regs[PS_REGNUM], 4));
+ write_register (PS_REGNUM,
+ read_memory_integer (get_frame_saved_regs (frame)[PS_REGNUM], 4));
}
- write_register (FP_REGNUM, read_memory_integer (fp, 4));
+ write_register (DEPRECATED_FP_REGNUM, read_memory_integer (fp, 4));
write_register (PC_REGNUM, read_memory_integer (fp + 4, 4));
write_register (SP_REGNUM, fp + 8);
flush_cached_frames ();
- set_current_frame (create_new_frame (read_register (FP_REGNUM),
- read_pc ()));
}
-
\f
+
/* Given an ip value corresponding to the start of a function,
return the ip of the first instruction after the function
prologue. This is the generic m68k support. Machines which
A link instruction, word form:
- link.w %a6,&0 4e56 XXXX
+ link.w %a6,&0 4e56 XXXX
A link instruction, long form:
- link.l %fp,&F%1 480e XXXX XXXX
+ link.l %fp,&F%1 480e XXXX XXXX
A movm instruction to preserve integer regs:
- movm.l &M%1,(4,%sp) 48ef XXXX XXXX
+ movm.l &M%1,(4,%sp) 48ef XXXX XXXX
A fmovm instruction to preserve float regs:
- fmovm &FPM%1,(FPO%1,%sp) f237 XXXX XXXX XXXX XXXX
+ fmovm &FPM%1,(FPO%1,%sp) f237 XXXX XXXX XXXX XXXX
Some profiling setup code (FIXME, not recognized yet):
- lea.l (.L3,%pc),%a1 43fb XXXX XXXX XXXX
- bsr _mcount 61ff XXXX XXXX
-
- */
+ lea.l (.L3,%pc),%a1 43fb XXXX XXXX XXXX
+ bsr _mcount 61ff XXXX XXXX
-#define P_LINK_L 0x480e
-#define P_LINK_W 0x4e56
-#define P_MOV_L 0x207c
-#define P_JSR 0x4eb9
-#define P_BSR 0x61ff
-#define P_LEA_L 0x43fb
-#define P_MOVM_L 0x48ef
-#define P_FMOVM 0xf237
-#define P_TRAP 0x4e40
+ */
-CORE_ADDR
-m68k_skip_prologue (ip)
-CORE_ADDR ip;
+static CORE_ADDR
+m68k_skip_prologue (CORE_ADDR ip)
{
register CORE_ADDR limit;
struct symtab_and_line sal;
while (ip < limit)
{
- op = read_memory_integer (ip, 2);
- op &= 0xFFFF;
-
- if (op == P_LINK_W)
- {
- ip += 4; /* Skip link.w */
- }
- else if (op == P_LINK_L)
- {
- ip += 6; /* Skip link.l */
- }
- else if (op == P_MOVM_L)
- {
- ip += 6; /* Skip movm.l */
- }
+ op = read_memory_unsigned_integer (ip, 2);
+
+ if (op == P_LINKW_FP)
+ ip += 4; /* Skip link.w */
+ else if (op == P_PEA_FP)
+ ip += 2; /* Skip pea %fp */
+ else if (op == P_MOVL_SP_FP)
+ ip += 2; /* Skip move.l %sp, %fp */
+ else if (op == P_LINKL_FP)
+ ip += 6; /* Skip link.l */
+ else if (op == P_MOVML)
+ ip += 6; /* Skip movm.l */
else if (op == P_FMOVM)
- {
- ip += 10; /* Skip fmovm */
- }
+ ip += 10; /* Skip fmovm */
else
- {
- break; /* Found unknown code, bail out. */
- }
+ break; /* Found unknown code, bail out. */
}
return (ip);
}
-void
-m68k_find_saved_regs (frame_info, saved_regs)
- struct frame_info *frame_info;
- struct frame_saved_regs *saved_regs;
+/* Store the addresses of the saved registers of the frame described by
+ FRAME_INFO in its saved_regs field.
+ This includes special registers such as pc and fp saved in special
+ ways in the stack frame. sp is even more special:
+ the address we return for it IS the sp for the next frame. */
+
+static void
+m68k_frame_init_saved_regs (struct frame_info *frame_info)
{
- register int regnum;
- register int regmask;
- register CORE_ADDR next_addr;
+ register int regnum;
+ register int regmask;
+ register CORE_ADDR next_addr;
register CORE_ADDR pc;
/* First possible address for a pc in a call dummy for this frame. */
CORE_ADDR possible_call_dummy_start =
- (frame_info)->frame - CALL_DUMMY_LENGTH - FP_REGNUM*4 - 4
-#if defined (HAVE_68881)
- - 8*12
-#endif
- ;
+ get_frame_base (frame_info) - 28 - DEPRECATED_FP_REGNUM * 4 - 4 - 8 * 12;
int nextinsn;
- memset (saved_regs, 0, sizeof (*saved_regs));
- if ((frame_info)->pc >= possible_call_dummy_start
- && (frame_info)->pc <= (frame_info)->frame)
+
+ if (get_frame_saved_regs (frame_info))
+ return;
+
+ frame_saved_regs_zalloc (frame_info);
+
+ memset (get_frame_saved_regs (frame_info), 0, SIZEOF_FRAME_SAVED_REGS);
+
+ if (get_frame_pc (frame_info) >= possible_call_dummy_start
+ && get_frame_pc (frame_info) <= get_frame_base (frame_info))
{
/* It is a call dummy. We could just stop now, since we know
- what the call dummy saves and where. But this code proceeds
- to parse the "prologue" which is part of the call dummy.
- This is needlessly complex, confusing, and also is the only
- reason that the call dummy is customized based on HAVE_68881.
- FIXME. */
+ what the call dummy saves and where. But this code proceeds
+ to parse the "prologue" which is part of the call dummy.
+ This is needlessly complex and confusing. FIXME. */
- next_addr = (frame_info)->frame;
+ next_addr = get_frame_base (frame_info);
pc = possible_call_dummy_start;
}
- else
- {
- pc = get_pc_function_start ((frame_info)->pc);
- /* Verify we have a link a6 instruction next;
- if not we lose. If we win, find the address above the saved
- regs using the amount of storage from the link instruction. */
- if (044016 == read_memory_integer (pc, 2))
- next_addr = (frame_info)->frame + read_memory_integer (pc += 2, 4), pc+=4;
- else if (047126 == read_memory_integer (pc, 2))
- next_addr = (frame_info)->frame + read_memory_integer (pc += 2, 2), pc+=2;
- else goto lose;
- /* If have an addal #-n, sp next, adjust next_addr. */
- if ((0177777 & read_memory_integer (pc, 2)) == 0157774)
- next_addr += read_memory_integer (pc += 2, 4), pc += 4;
- }
- regmask = read_memory_integer (pc + 2, 2);
-#if defined (HAVE_68881)
- /* Here can come an fmovem. Check for it. */
- nextinsn = 0xffff & read_memory_integer (pc, 2);
- if (0xf227 == nextinsn
- && (regmask & 0xff00) == 0xe000)
- { pc += 4; /* Regmask's low bit is for register fp7, the first pushed */
- for (regnum = FP0_REGNUM + 7; regnum >= FP0_REGNUM; regnum--, regmask >>= 1)
- if (regmask & 1)
- saved_regs->regs[regnum] = (next_addr -= 12);
- regmask = read_memory_integer (pc + 2, 2); }
-#endif
- /* next should be a moveml to (sp) or -(sp) or a movl r,-(sp) */
- if (0044327 == read_memory_integer (pc, 2))
- { pc += 4; /* Regmask's low bit is for register 0, the first written */
- for (regnum = 0; regnum < 16; regnum++, regmask >>= 1)
- if (regmask & 1)
- saved_regs->regs[regnum] = (next_addr += 4) - 4; }
- else if (0044347 == read_memory_integer (pc, 2))
+ else
{
- pc += 4; /* Regmask's low bit is for register 15, the first pushed */
- for (regnum = 15; regnum >= 0; regnum--, regmask >>= 1)
- if (regmask & 1)
- saved_regs->regs[regnum] = (next_addr -= 4);
+ pc = get_frame_func (frame_info);
+
+ nextinsn = read_memory_unsigned_integer (pc, 2);
+ if (P_PEA_FP == nextinsn
+ && P_MOVL_SP_FP == read_memory_unsigned_integer (pc + 2, 2))
+ {
+ /* pea %fp
+ move.l %sp, %fp */
+ next_addr = get_frame_base (frame_info);
+ pc += 4;
+ }
+ else if (P_LINKL_FP == nextinsn)
+ /* link.l %fp */
+ /* Find the address above the saved
+ regs using the amount of storage from the link instruction. */
+ {
+ next_addr = get_frame_base (frame_info) + read_memory_integer (pc + 2, 4);
+ pc += 6;
+ }
+ else if (P_LINKW_FP == nextinsn)
+ /* link.w %fp */
+ /* Find the address above the saved
+ regs using the amount of storage from the link instruction. */
+ {
+ next_addr = get_frame_base (frame_info) + read_memory_integer (pc + 2, 2);
+ pc += 4;
+ }
+ else
+ goto lose;
+
+ /* If have an addal #-n, sp next, adjust next_addr. */
+ if (read_memory_unsigned_integer (pc, 2) == 0157774)
+ next_addr += read_memory_integer (pc += 2, 4), pc += 4;
}
- else if (0x2f00 == (0xfff0 & read_memory_integer (pc, 2)))
+
+ for (;;)
{
- regnum = 0xf & read_memory_integer (pc, 2); pc += 2;
- saved_regs->regs[regnum] = (next_addr -= 4);
- /* gcc, at least, may use a pair of movel instructions when saving
- exactly 2 registers. */
- if (0x2f00 == (0xfff0 & read_memory_integer (pc, 2)))
+ nextinsn = read_memory_unsigned_integer (pc, 2);
+ regmask = read_memory_unsigned_integer (pc + 2, 2);
+ /* fmovemx to -(sp) */
+ if (0xf227 == nextinsn && (regmask & 0xff00) == 0xe000)
+ {
+ /* Regmask's low bit is for register fp7, the first pushed */
+ for (regnum = FP0_REGNUM + 8; --regnum >= FP0_REGNUM; regmask >>= 1)
+ if (regmask & 1)
+ get_frame_saved_regs (frame_info)[regnum] = (next_addr -= 12);
+ pc += 4;
+ }
+ /* fmovemx to (fp + displacement) */
+ else if (0171056 == nextinsn && (regmask & 0xff00) == 0xf000)
+ {
+ register CORE_ADDR addr;
+
+ addr = get_frame_base (frame_info) + read_memory_integer (pc + 4, 2);
+ /* Regmask's low bit is for register fp7, the first pushed */
+ for (regnum = FP0_REGNUM + 8; --regnum >= FP0_REGNUM; regmask >>= 1)
+ if (regmask & 1)
+ {
+ get_frame_saved_regs (frame_info)[regnum] = addr;
+ addr += 12;
+ }
+ pc += 6;
+ }
+ /* moveml to (sp) */
+ else if (0044327 == nextinsn)
+ {
+ /* Regmask's low bit is for register 0, the first written */
+ for (regnum = 0; regnum < 16; regnum++, regmask >>= 1)
+ if (regmask & 1)
+ {
+ get_frame_saved_regs (frame_info)[regnum] = next_addr;
+ next_addr += 4;
+ }
+ pc += 4;
+ }
+ /* moveml to (fp + displacement) */
+ else if (0044356 == nextinsn)
+ {
+ register CORE_ADDR addr;
+
+ addr = get_frame_base (frame_info) + read_memory_integer (pc + 4, 2);
+ /* Regmask's low bit is for register 0, the first written */
+ for (regnum = 0; regnum < 16; regnum++, regmask >>= 1)
+ if (regmask & 1)
+ {
+ get_frame_saved_regs (frame_info)[regnum] = addr;
+ addr += 4;
+ }
+ pc += 6;
+ }
+ /* moveml to -(sp) */
+ else if (0044347 == nextinsn)
+ {
+ /* Regmask's low bit is for register 15, the first pushed */
+ for (regnum = 16; --regnum >= 0; regmask >>= 1)
+ if (regmask & 1)
+ get_frame_saved_regs (frame_info)[regnum] = (next_addr -= 4);
+ pc += 4;
+ }
+ /* movl r,-(sp) */
+ else if (0x2f00 == (0xfff0 & nextinsn))
{
- regnum = 0xf & read_memory_integer (pc, 2);
+ regnum = 0xf & nextinsn;
+ get_frame_saved_regs (frame_info)[regnum] = (next_addr -= 4);
pc += 2;
- saved_regs->regs[regnum] = (next_addr -= 4);
}
+ /* fmovemx to index of sp */
+ else if (0xf236 == nextinsn && (regmask & 0xff00) == 0xf000)
+ {
+ /* Regmask's low bit is for register fp0, the first written */
+ for (regnum = FP0_REGNUM + 8; --regnum >= FP0_REGNUM; regmask >>= 1)
+ if (regmask & 1)
+ {
+ get_frame_saved_regs (frame_info)[regnum] = next_addr;
+ next_addr += 12;
+ }
+ pc += 10;
+ }
+ /* clrw -(sp); movw ccr,-(sp) */
+ else if (0x4267 == nextinsn && 0x42e7 == regmask)
+ {
+ get_frame_saved_regs (frame_info)[PS_REGNUM] = (next_addr -= 4);
+ pc += 4;
+ }
+ else
+ break;
}
-#if defined (HAVE_68881)
- /* fmovemx to index of sp may follow. */
- regmask = read_memory_integer (pc + 2, 2);
- nextinsn = 0xffff & read_memory_integer (pc, 2);
- if (0xf236 == nextinsn
- && (regmask & 0xff00) == 0xf000)
- { pc += 10; /* Regmask's low bit is for register fp0, the first written */
- for (regnum = FP0_REGNUM + 7; regnum >= FP0_REGNUM; regnum--, regmask >>= 1)
- if (regmask & 1)
- saved_regs->regs[regnum] = (next_addr += 12) - 12;
- regmask = read_memory_integer (pc + 2, 2); }
-#endif
- /* clrw -(sp); movw ccr,-(sp) may follow. */
- if (0x426742e7 == read_memory_integer (pc, 4))
- saved_regs->regs[PS_REGNUM] = (next_addr -= 4);
- lose: ;
- saved_regs->regs[SP_REGNUM] = (frame_info)->frame + 8;
- saved_regs->regs[FP_REGNUM] = (frame_info)->frame;
- saved_regs->regs[PC_REGNUM] = (frame_info)->frame + 4;
+lose:;
+ get_frame_saved_regs (frame_info)[SP_REGNUM] = get_frame_base (frame_info) + 8;
+ get_frame_saved_regs (frame_info)[DEPRECATED_FP_REGNUM] = get_frame_base (frame_info);
+ get_frame_saved_regs (frame_info)[PC_REGNUM] = get_frame_base (frame_info) + 4;
#ifdef SIG_SP_FP_OFFSET
/* Adjust saved SP_REGNUM for fake _sigtramp frames. */
- if (frame_info->signal_handler_caller && frame_info->next)
- saved_regs->regs[SP_REGNUM] = frame_info->next->frame + SIG_SP_FP_OFFSET;
+ if ((get_frame_type (frame_info) == SIGTRAMP_FRAME) && frame_info->next)
+ frame_info->saved_regs[SP_REGNUM] =
+ frame_info->next->frame + SIG_SP_FP_OFFSET;
#endif
}
-#ifdef USE_PROC_FS /* Target dependent support for /proc */
+#ifdef USE_PROC_FS /* Target dependent support for /proc */
#include <sys/procfs.h>
+/* Prototypes for supply_gregset etc. */
+#include "gregset.h"
+
/* The /proc interface divides the target machine's register set up into
- two different sets, the general register set (gregset) and the floating
- point register set (fpregset). For each set, there is an ioctl to get
- the current register set and another ioctl to set the current values.
+ two different sets, the general register set (gregset) and the floating
+ point register set (fpregset). For each set, there is an ioctl to get
+ the current register set and another ioctl to set the current values.
- The actual structure passed through the ioctl interface is, of course,
- naturally machine dependent, and is different for each set of registers.
- For the m68k for example, the general register set is typically defined
- by:
+ The actual structure passed through the ioctl interface is, of course,
+ naturally machine dependent, and is different for each set of registers.
+ For the m68k for example, the general register set is typically defined
+ by:
- typedef int gregset_t[18];
+ typedef int gregset_t[18];
- #define R_D0 0
- ...
- #define R_PS 17
+ #define R_D0 0
+ ...
+ #define R_PS 17
- and the floating point set by:
+ and the floating point set by:
- typedef struct fpregset {
- int f_pcr;
- int f_psr;
- int f_fpiaddr;
- int f_fpregs[8][3]; (8 regs, 96 bits each)
- } fpregset_t;
+ typedef struct fpregset {
+ int f_pcr;
+ int f_psr;
+ int f_fpiaddr;
+ int f_fpregs[8][3]; (8 regs, 96 bits each)
+ } fpregset_t;
- These routines provide the packing and unpacking of gregset_t and
- fpregset_t formatted data.
+ These routines provide the packing and unpacking of gregset_t and
+ fpregset_t formatted data.
*/
+/* Atari SVR4 has R_SR but not R_PS */
+
+#if !defined (R_PS) && defined (R_SR)
+#define R_PS R_SR
+#endif
/* Given a pointer to a general register set in /proc format (gregset_t *),
- unpack the register contents and supply them as gdb's idea of the current
- register values. */
+ unpack the register contents and supply them as gdb's idea of the current
+ register values. */
void
-supply_gregset (gregsetp)
-gregset_t *gregsetp;
+supply_gregset (gregset_t *gregsetp)
{
register int regi;
register greg_t *regp = (greg_t *) gregsetp;
- for (regi = 0 ; regi < R_PC ; regi++)
+ for (regi = 0; regi < R_PC; regi++)
{
supply_register (regi, (char *) (regp + regi));
}
}
void
-fill_gregset (gregsetp, regno)
-gregset_t *gregsetp;
-int regno;
+fill_gregset (gregset_t *gregsetp, int regno)
{
register int regi;
register greg_t *regp = (greg_t *) gregsetp;
- extern char registers[];
- for (regi = 0 ; regi < R_PC ; regi++)
+ for (regi = 0; regi < R_PC; regi++)
{
if ((regno == -1) || (regno == regi))
{
- *(regp + regi) = *(int *) ®isters[REGISTER_BYTE (regi)];
+ *(regp + regi) = *(int *) &deprecated_registers[REGISTER_BYTE (regi)];
}
}
if ((regno == -1) || (regno == PS_REGNUM))
{
- *(regp + R_PS) = *(int *) ®isters[REGISTER_BYTE (PS_REGNUM)];
+ *(regp + R_PS) = *(int *) &deprecated_registers[REGISTER_BYTE (PS_REGNUM)];
}
if ((regno == -1) || (regno == PC_REGNUM))
{
- *(regp + R_PC) = *(int *) ®isters[REGISTER_BYTE (PC_REGNUM)];
+ *(regp + R_PC) = *(int *) &deprecated_registers[REGISTER_BYTE (PC_REGNUM)];
}
}
#if defined (FP0_REGNUM)
/* Given a pointer to a floating point register set in /proc format
- (fpregset_t *), unpack the register contents and supply them as gdb's
- idea of the current floating point register values. */
+ (fpregset_t *), unpack the register contents and supply them as gdb's
+ idea of the current floating point register values. */
-void
-supply_fpregset (fpregsetp)
-fpregset_t *fpregsetp;
+void
+supply_fpregset (fpregset_t *fpregsetp)
{
register int regi;
char *from;
-
- for (regi = FP0_REGNUM ; regi < FPC_REGNUM ; regi++)
+
+ for (regi = FP0_REGNUM; regi < M68K_FPC_REGNUM; regi++)
{
- from = (char *) &(fpregsetp -> f_fpregs[regi-FP0_REGNUM][0]);
+ from = (char *) &(fpregsetp->f_fpregs[regi - FP0_REGNUM][0]);
supply_register (regi, from);
}
- supply_register (FPC_REGNUM, (char *) &(fpregsetp -> f_pcr));
- supply_register (FPS_REGNUM, (char *) &(fpregsetp -> f_psr));
- supply_register (FPI_REGNUM, (char *) &(fpregsetp -> f_fpiaddr));
+ supply_register (M68K_FPC_REGNUM, (char *) &(fpregsetp->f_pcr));
+ supply_register (M68K_FPS_REGNUM, (char *) &(fpregsetp->f_psr));
+ supply_register (M68K_FPI_REGNUM, (char *) &(fpregsetp->f_fpiaddr));
}
/* Given a pointer to a floating point register set in /proc format
- (fpregset_t *), update the register specified by REGNO from gdb's idea
- of the current floating point register set. If REGNO is -1, update
- them all. */
+ (fpregset_t *), update the register specified by REGNO from gdb's idea
+ of the current floating point register set. If REGNO is -1, update
+ them all. */
void
-fill_fpregset (fpregsetp, regno)
-fpregset_t *fpregsetp;
-int regno;
+fill_fpregset (fpregset_t *fpregsetp, int regno)
{
int regi;
char *to;
char *from;
- extern char registers[];
- for (regi = FP0_REGNUM ; regi < FPC_REGNUM ; regi++)
+ for (regi = FP0_REGNUM; regi < M68K_FPC_REGNUM; regi++)
{
if ((regno == -1) || (regno == regi))
{
- from = (char *) ®isters[REGISTER_BYTE (regi)];
- to = (char *) &(fpregsetp -> f_fpregs[regi-FP0_REGNUM][0]);
+ from = (char *) &deprecated_registers[REGISTER_BYTE (regi)];
+ to = (char *) &(fpregsetp->f_fpregs[regi - FP0_REGNUM][0]);
memcpy (to, from, REGISTER_RAW_SIZE (regi));
}
}
- if ((regno == -1) || (regno == FPC_REGNUM))
+ if ((regno == -1) || (regno == M68K_FPC_REGNUM))
{
- fpregsetp -> f_pcr = *(int *) ®isters[REGISTER_BYTE (FPC_REGNUM)];
+ fpregsetp->f_pcr = *(int *) &deprecated_registers[REGISTER_BYTE (M68K_FPC_REGNUM)];
}
- if ((regno == -1) || (regno == FPS_REGNUM))
+ if ((regno == -1) || (regno == M68K_FPS_REGNUM))
{
- fpregsetp -> f_psr = *(int *) ®isters[REGISTER_BYTE (FPS_REGNUM)];
+ fpregsetp->f_psr = *(int *) &deprecated_registers[REGISTER_BYTE (M68K_FPS_REGNUM)];
}
- if ((regno == -1) || (regno == FPI_REGNUM))
+ if ((regno == -1) || (regno == M68K_FPI_REGNUM))
{
- fpregsetp -> f_fpiaddr = *(int *) ®isters[REGISTER_BYTE (FPI_REGNUM)];
+ fpregsetp->f_fpiaddr = *(int *) &deprecated_registers[REGISTER_BYTE (M68K_FPI_REGNUM)];
}
}
-#endif /* defined (FP0_REGNUM) */
+#endif /* defined (FP0_REGNUM) */
-#endif /* USE_PROC_FS */
+#endif /* USE_PROC_FS */
-#ifdef GET_LONGJMP_TARGET
/* 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 PC.
This routine returns true on success. */
int
-get_longjmp_target(pc)
- CORE_ADDR *pc;
+m68k_get_longjmp_target (CORE_ADDR *pc)
{
- char buf[TARGET_PTR_BIT / TARGET_CHAR_BIT];
+ char *buf;
CORE_ADDR sp, jb_addr;
+ struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
- sp = read_register(SP_REGNUM);
+ if (tdep->jb_pc < 0)
+ {
+ internal_error (__FILE__, __LINE__,
+ "m68k_get_longjmp_target: not implemented");
+ return 0;
+ }
- if (target_read_memory (sp + SP_ARG0, /* Offset of first arg on stack */
- buf,
- TARGET_PTR_BIT / TARGET_CHAR_BIT))
+ buf = alloca (TARGET_PTR_BIT / TARGET_CHAR_BIT);
+ sp = read_register (SP_REGNUM);
+
+ if (target_read_memory (sp + SP_ARG0, /* Offset of first arg on stack */
+ buf, TARGET_PTR_BIT / TARGET_CHAR_BIT))
return 0;
jb_addr = extract_address (buf, TARGET_PTR_BIT / TARGET_CHAR_BIT);
- if (target_read_memory (jb_addr + JB_PC * JB_ELEMENT_SIZE, buf,
+ if (target_read_memory (jb_addr + tdep->jb_pc * tdep->jb_elt_size, buf,
TARGET_PTR_BIT / TARGET_CHAR_BIT))
return 0;
*pc = extract_address (buf, TARGET_PTR_BIT / TARGET_CHAR_BIT);
-
return 1;
}
-#endif /* GET_LONGJMP_TARGET */
/* Immediately after a function call, return the saved pc before the frame
is setup. For sun3's, we check for the common case of being inside of a
system call, and if so, we know that Sun pushes the call # on the stack
prior to doing the trap. */
-CORE_ADDR
-m68k_saved_pc_after_call(frame)
- struct frame_info *frame;
+static CORE_ADDR
+m68k_saved_pc_after_call (struct frame_info *frame)
{
-#ifdef GDB_TARGET_IS_SUN3
+#ifdef SYSCALL_TRAP
int op;
- op = read_memory_integer (frame->pc, 2);
- op &= 0xFFFF;
+ op = read_memory_unsigned_integer (frame->pc - SYSCALL_TRAP_OFFSET, 2);
- if (op == P_TRAP)
- return read_memory_integer (read_register (SP_REGNUM) + 4, 4);
+ if (op == SYSCALL_TRAP)
+ return read_memory_unsigned_integer (read_register (SP_REGNUM) + 4, 4);
else
-#endif /* GDB_TARGET_IS_SUN3 */
- return read_memory_integer (read_register (SP_REGNUM), 4);
+#endif /* SYSCALL_TRAP */
+ return read_memory_unsigned_integer (read_register (SP_REGNUM), 4);
+}
+
+/* Function: m68k_gdbarch_init
+ Initializer function for the m68k gdbarch vector.
+ Called by gdbarch. Sets up the gdbarch vector(s) for this target. */
+
+static struct gdbarch *
+m68k_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
+{
+ static LONGEST call_dummy_words[7] = { 0xf227e0ff, 0x48e7fffc, 0x426742e7,
+ 0x4eb93232, 0x3232dffc, 0x69696969,
+ (0x4e404e71 | (BPT_VECTOR << 16))
+ };
+ struct gdbarch_tdep *tdep = NULL;
+ struct gdbarch *gdbarch;
+
+ /* find a candidate among the list of pre-declared architectures. */
+ arches = gdbarch_list_lookup_by_info (arches, &info);
+ if (arches != NULL)
+ return (arches->gdbarch);
+
+ tdep = xmalloc (sizeof (struct gdbarch_tdep));
+ gdbarch = gdbarch_alloc (&info, tdep);
+
+ /* NOTE: cagney/2002-12-06: This can be deleted when this arch is
+ ready to unwind the PC first (see frame.c:get_prev_frame()). */
+ set_gdbarch_deprecated_init_frame_pc (gdbarch, init_frame_pc_default);
+
+ set_gdbarch_long_double_format (gdbarch, &floatformat_m68881_ext);
+ set_gdbarch_long_double_bit (gdbarch, 96);
+
+ set_gdbarch_function_start_offset (gdbarch, 0);
+
+ set_gdbarch_skip_prologue (gdbarch, m68k_skip_prologue);
+ set_gdbarch_deprecated_saved_pc_after_call (gdbarch, m68k_saved_pc_after_call);
+ set_gdbarch_breakpoint_from_pc (gdbarch, m68k_local_breakpoint_from_pc);
+
+ /* Stack grows down. */
+ set_gdbarch_inner_than (gdbarch, core_addr_lessthan);
+ set_gdbarch_stack_align (gdbarch, m68k_stack_align);
+ set_gdbarch_deprecated_extra_stack_alignment_needed (gdbarch, 1);
+
+ set_gdbarch_believe_pcc_promotion (gdbarch, 1);
+ set_gdbarch_decr_pc_after_break (gdbarch, 2);
+
+ set_gdbarch_deprecated_store_struct_return (gdbarch, m68k_store_struct_return);
+ set_gdbarch_deprecated_extract_return_value (gdbarch,
+ m68k_deprecated_extract_return_value);
+ set_gdbarch_deprecated_store_return_value (gdbarch, m68k_store_return_value);
+
+ set_gdbarch_deprecated_frame_chain (gdbarch, m68k_frame_chain);
+ set_gdbarch_deprecated_frame_saved_pc (gdbarch, m68k_frame_saved_pc);
+ set_gdbarch_deprecated_frame_init_saved_regs (gdbarch, m68k_frame_init_saved_regs);
+ set_gdbarch_frameless_function_invocation (gdbarch,
+ m68k_frameless_function_invocation);
+ /* OK to default this value to 'unknown'. */
+ set_gdbarch_frame_num_args (gdbarch, frame_num_args_unknown);
+ set_gdbarch_frame_args_skip (gdbarch, 8);
+
+ set_gdbarch_register_raw_size (gdbarch, m68k_register_raw_size);
+ set_gdbarch_register_virtual_size (gdbarch, m68k_register_virtual_size);
+ set_gdbarch_deprecated_max_register_raw_size (gdbarch, 12);
+ set_gdbarch_deprecated_max_register_virtual_size (gdbarch, 12);
+ set_gdbarch_register_virtual_type (gdbarch, m68k_register_virtual_type);
+ set_gdbarch_register_name (gdbarch, m68k_register_name);
+ set_gdbarch_deprecated_register_size (gdbarch, 4);
+ set_gdbarch_register_byte (gdbarch, m68k_register_byte);
+ set_gdbarch_num_regs (gdbarch, 29);
+ set_gdbarch_register_bytes_ok (gdbarch, m68k_register_bytes_ok);
+ set_gdbarch_deprecated_register_bytes (gdbarch, (16 * 4 + 8 + 8 * 12 + 3 * 4));
+ set_gdbarch_sp_regnum (gdbarch, M68K_SP_REGNUM);
+ set_gdbarch_deprecated_fp_regnum (gdbarch, M68K_FP_REGNUM);
+ set_gdbarch_pc_regnum (gdbarch, M68K_PC_REGNUM);
+ set_gdbarch_ps_regnum (gdbarch, M68K_PS_REGNUM);
+ set_gdbarch_fp0_regnum (gdbarch, M68K_FP0_REGNUM);
+
+ set_gdbarch_deprecated_use_generic_dummy_frames (gdbarch, 0);
+ set_gdbarch_call_dummy_location (gdbarch, ON_STACK);
+ set_gdbarch_deprecated_call_dummy_breakpoint_offset (gdbarch, 24);
+ set_gdbarch_deprecated_pc_in_call_dummy (gdbarch, deprecated_pc_in_call_dummy_on_stack);
+ set_gdbarch_deprecated_call_dummy_length (gdbarch, 28);
+ set_gdbarch_deprecated_call_dummy_start_offset (gdbarch, 12);
+
+ set_gdbarch_deprecated_call_dummy_words (gdbarch, call_dummy_words);
+ set_gdbarch_deprecated_sizeof_call_dummy_words (gdbarch, sizeof (call_dummy_words));
+ set_gdbarch_deprecated_fix_call_dummy (gdbarch, m68k_fix_call_dummy);
+ set_gdbarch_deprecated_push_dummy_frame (gdbarch, m68k_push_dummy_frame);
+ set_gdbarch_deprecated_pop_frame (gdbarch, m68k_pop_frame);
+
+ /* Should be using push_dummy_call. */
+ set_gdbarch_deprecated_dummy_write_sp (gdbarch, generic_target_write_sp);
+
+#if defined JB_PC && defined JB_ELEMENT_SIZE
+ tdep->jb_pc = JB_PC;
+ tdep->jb_elt_size = JB_ELEMENT_SIZE;
+#else
+ tdep->jb_pc = -1;
+#endif
+
+ /* Hook in ABI-specific overrides, if they have been registered. */
+ gdbarch_init_osabi (info, gdbarch);
+
+ /* Now we have tuned the configuration, set a few final things,
+ based on what the OS ABI has told us. */
+
+ if (tdep->jb_pc >= 0)
+ set_gdbarch_get_longjmp_target (gdbarch, m68k_get_longjmp_target);
+
+ return gdbarch;
+}
+
+
+static void
+m68k_dump_tdep (struct gdbarch *current_gdbarch, struct ui_file *file)
+{
+ struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
+
+ if (tdep == NULL)
+ return;
+}
+
+void
+_initialize_m68k_tdep (void)
+{
+ gdbarch_register (bfd_arch_m68k, m68k_gdbarch_init, m68k_dump_tdep);
+ deprecated_tm_print_insn = print_insn_m68k;
}
projects / deliverable / binutils-gdb.git / blobdiff