/* Target-machine dependent code for Zilog Z8000, for GDB.
- Copyright (C) 1992,1993 Free Software Foundation, Inc.
-This file is part of GDB.
+ Copyright 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001,
+ 2002 Free Software Foundation, Inc.
-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 file is part of GDB.
-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 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.
-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. */
+ 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. */
/*
- Contributed by Steve Chamberlain
- sac@cygnus.com
+ Contributed by Steve Chamberlain
+ sac@cygnus.com
*/
#include "defs.h"
#include "frame.h"
-#include "obstack.h"
#include "symtab.h"
#include "gdbcmd.h"
#include "gdbtypes.h"
#include "dis-asm.h"
+#include "gdbcore.h"
+#include "regcache.h"
+
+#include "value.h" /* For read_register() */
+
+
+static int read_memory_pointer (CORE_ADDR x);
+
/* Return the saved PC from this frame.
If the frame has a memory copy of SRP_REGNUM, use that. If not,
just use the register SRP_REGNUM itself. */
CORE_ADDR
-frame_saved_pc (frame)
- FRAME frame;
+z8k_frame_saved_pc (struct frame_info *frame)
{
- return (read_memory_pointer (frame->frame + (BIG ? 4 : 2)));
+ return read_memory_pointer (frame->frame + (BIG ? 4 : 2));
}
#define IS_PUSHL(x) (BIG ? ((x & 0xfff0) == 0x91e0):((x & 0xfff0) == 0x91F0))
return the pc pointing to the first push */
static CORE_ADDR
-skip_adjust (pc, size)
- CORE_ADDR pc;
- int *size;
+skip_adjust (CORE_ADDR pc, int *size)
{
*size = 0;
return pc;
}
-int
-examine_frame (pc, regs, sp)
- CORE_ADDR pc;
- struct frame_saved_regs *regs;
- CORE_ADDR sp;
+static CORE_ADDR examine_frame (CORE_ADDR, CORE_ADDR * regs, CORE_ADDR);
+static CORE_ADDR
+examine_frame (CORE_ADDR pc, CORE_ADDR *regs, CORE_ADDR sp)
{
int w = read_memory_short (pc);
int offset = 0;
int regno;
for (regno = 0; regno < NUM_REGS; regno++)
- regs->regs[regno] = 0;
+ regs[regno] = 0;
while (IS_PUSHW (w) || IS_PUSHL (w))
{
/* work out which register is being pushed to where */
if (IS_PUSHL (w))
{
- regs->regs[w & 0xf] = offset;
- regs->regs[(w & 0xf) + 1] = offset + 2;
+ regs[w & 0xf] = offset;
+ regs[(w & 0xf) + 1] = offset + 2;
offset += 4;
}
else
{
- regs->regs[w & 0xf] = offset;
+ regs[w & 0xf] = offset;
offset += 2;
}
pc += 2;
else if (IS_SUB_SP (w))
{
/* Subtracting a value from the sp, so were in a function
- which needs stack space for locals, but has no fp. We fake up
- the values as if we had an fp */
- regs->regs[FP_REGNUM] = sp;
+ which needs stack space for locals, but has no fp. We fake up
+ the values as if we had an fp */
+ regs[FP_REGNUM] = sp;
}
else
{
/* This one didn't have an fp, we'll fake it up */
- regs->regs[SP_REGNUM] = sp;
+ regs[SP_REGNUM] = sp;
}
/* stack pointer contains address of next frame */
- /* regs->regs[fp_regnum()] = fp;*/
- regs->regs[SP_REGNUM] = sp;
+ /* regs[fp_regnum()] = fp; */
+ regs[SP_REGNUM] = sp;
return pc;
}
CORE_ADDR
-z8k_skip_prologue (start_pc)
- CORE_ADDR start_pc;
+z8k_skip_prologue (CORE_ADDR start_pc)
{
- struct frame_saved_regs dummy;
+ CORE_ADDR dummy[NUM_REGS];
- return examine_frame (start_pc, &dummy, 0);
+ return examine_frame (start_pc, dummy, 0);
}
CORE_ADDR
-addr_bits_remove (x)
- CORE_ADDR x;
+z8k_addr_bits_remove (CORE_ADDR addr)
{
- return x & PTR_MASK;
+ return (addr & PTR_MASK);
}
-read_memory_pointer (x)
- CORE_ADDR x;
+static int
+read_memory_pointer (CORE_ADDR x)
{
-
return read_memory_integer (ADDR_BITS_REMOVE (x), BIG ? 4 : 2);
}
-FRAME_ADDR
-frame_chain (thisframe)
- FRAME thisframe;
+CORE_ADDR
+z8k_frame_chain (struct frame_info *thisframe)
{
- if (thisframe->prev == 0)
+ if (!inside_entry_file (thisframe->pc))
{
- /* This is the top of the stack, let's get the sp for real */
- }
- if (!inside_entry_file ((thisframe)->pc))
- {
- return read_memory_pointer ((thisframe)->frame);
+ return read_memory_pointer (thisframe->frame);
}
return 0;
}
-init_frame_pc ()
+void
+init_frame_pc (void)
{
- abort ();
+ internal_error (__FILE__, __LINE__, "failed internal consistency check");
}
/* Put here the code to store, into a struct frame_saved_regs,
the address we return for it IS the sp for the next frame. */
void
-get_frame_saved_regs (frame_info, frame_saved_regs)
- struct frame_info *frame_info;
- struct frame_saved_regs *frame_saved_regs;
-
+z8k_frame_init_saved_regs (struct frame_info *frame_info)
{
CORE_ADDR pc;
int w;
- memset (frame_saved_regs, '\0', sizeof (*frame_saved_regs));
+ frame_saved_regs_zalloc (frame_info);
pc = get_pc_function_start (frame_info->pc);
-/* wander down the instruction stream */
- examine_frame (pc, frame_saved_regs, frame_info->frame);
+ /* wander down the instruction stream */
+ examine_frame (pc, frame_info->saved_regs, frame_info->frame);
}
void
-z8k_push_dummy_frame ()
+z8k_push_dummy_frame (void)
{
- abort ();
+ internal_error (__FILE__, __LINE__, "failed internal consistency check");
}
int
-print_insn (memaddr, stream)
- CORE_ADDR memaddr;
- FILE *stream;
+gdb_print_insn_z8k (bfd_vma memaddr, disassemble_info *info)
{
- disassemble_info info;
-
- GDB_INIT_DISASSEMBLE_INFO(info, stream);
-
if (BIG)
- {
- return print_insn_z8001 ((bfd_vma) memaddr, &info);
- }
+ return print_insn_z8001 (memaddr, info);
else
- {
- return print_insn_z8002 ((bfd_vma) memaddr, &info);
- }
+ return print_insn_z8002 (memaddr, info);
}
/* Fetch the instruction at ADDR, returning 0 if ADDR is beyond LIM or
is not the address of a valid instruction, the address of the next
instruction beyond ADDR otherwise. *PWORD1 receives the first word
- of the instruction.*/
+ of the instruction. */
CORE_ADDR
-NEXT_PROLOGUE_INSN (addr, lim, pword1)
- CORE_ADDR addr;
- CORE_ADDR lim;
- short *pword1;
+NEXT_PROLOGUE_INSN (CORE_ADDR addr, CORE_ADDR lim, short *pword1)
{
char buf[2];
if (addr < lim + 8)
return 0;
}
+#if 0
/* Put here the code to store, into a struct frame_saved_regs,
the addresses of the saved registers of frame described by FRAME_INFO.
This includes special registers such as pc and fp saved in special
it is fairly expensive. */
void
-frame_find_saved_regs (fip, fsrp)
- struct frame_info *fip;
- struct frame_saved_regs *fsrp;
+frame_find_saved_regs (struct frame_info *fip, struct frame_saved_regs *fsrp)
{
int locals;
CORE_ADDR pc;
pc = skip_adjust (get_pc_function_start (fip->pc), &locals);
{
- adr = fip->frame - locals;
+ adr = FRAME_FP (fip) - locals;
for (i = 0; i < 8; i++)
{
int word = read_memory_short (pc);
fsrp->regs[FP_REGNUM] = fip->frame;
}
+#endif
int
-saved_pc_after_call ()
+z8k_saved_pc_after_call (struct frame_info *frame)
{
- return addr_bits_remove
+ return ADDR_BITS_REMOVE
(read_memory_integer (read_register (SP_REGNUM), PTR_SIZE));
}
-extract_return_value(type, regbuf, valbuf)
-struct type *type;
-char *regbuf;
-char *valbuf;
+void
+extract_return_value (struct type *type, char *regbuf, char *valbuf)
{
int b;
- int len = TYPE_LENGTH(type);
+ int len = TYPE_LENGTH (type);
- for (b = 0; b < len; b += 2) {
- int todo = len - b;
- if (todo > 2)
- todo = 2;
- memcpy(valbuf + b, regbuf + b, todo);
- }
+ for (b = 0; b < len; b += 2)
+ {
+ int todo = len - b;
+
+ if (todo > 2)
+ todo = 2;
+ memcpy (valbuf + b, regbuf + b, todo);
+ }
}
void
-write_return_value(type, valbuf)
-struct type *type;
-char *valbuf;
+write_return_value (struct type *type, char *valbuf)
{
int reg;
int len;
- for (len = 0; len < TYPE_LENGTH(type); len += 2)
- {
- write_register_bytes(REGISTER_BYTE(len /2 + 2), valbuf + len, 2);
- }
+
+ for (len = 0; len < TYPE_LENGTH (type); len += 2)
+ write_register_bytes (REGISTER_BYTE (len / 2 + 2), valbuf + len, 2);
}
void
-store_struct_return(addr, sp)
-CORE_ADDR addr;
-CORE_ADDR sp;
+store_struct_return (CORE_ADDR addr, CORE_ADDR sp)
{
- write_register(2, addr);
+ write_register (2, addr);
}
void
-print_register_hook (regno)
- int regno;
+z8k_print_register_hook (int regno)
{
if ((regno & 1) == 0 && regno < 16)
{
- unsigned short l[2];
+ unsigned char l[4];
- read_relative_register_raw_bytes (regno, (char *) (l + 0));
- read_relative_register_raw_bytes (regno + 1, (char *) (l + 1));
- printf ("\t");
- printf ("%04x%04x", l[0], l[1]);
+ frame_register_read (selected_frame, regno, l + 0);
+ frame_register_read (selected_frame, regno + 1, l + 2);
+ printf_unfiltered ("\t");
+ printf_unfiltered ("0x%02x%02x%02x%02x", l[0], l[1], l[2], l[3]);
}
if ((regno & 3) == 0 && regno < 16)
{
- unsigned short l[4];
+ unsigned char l[8];
- read_relative_register_raw_bytes (regno, (char *) (l + 0));
- read_relative_register_raw_bytes (regno + 1, (char *) (l + 1));
- read_relative_register_raw_bytes (regno + 2, (char *) (l + 2));
- read_relative_register_raw_bytes (regno + 3, (char *) (l + 3));
+ frame_register_read (selected_frame, regno, l + 0);
+ frame_register_read (selected_frame, regno + 1, l + 2);
+ frame_register_read (selected_frame, regno + 2, l + 4);
+ frame_register_read (selected_frame, regno + 3, l + 6);
- printf ("\t");
- printf ("%04x%04x%04x%04x", l[0], l[1], l[2], l[3]);
+ printf_unfiltered ("\t");
+ printf_unfiltered ("0x%02x%02x%02x%02x%02x%02x%02x%02x",
+ l[0], l[1], l[2], l[3], l[4], l[5], l[6], l[7]);
}
if (regno == 15)
{
unsigned short rval;
int i;
- read_relative_register_raw_bytes (regno, (char *) (&rval));
+ frame_register_read (selected_frame, regno, (char *) (&rval));
- printf ("\n");
+ printf_unfiltered ("\n");
for (i = 0; i < 10; i += 2)
{
- printf ("(sp+%d=%04x)", i, read_memory_short (rval + i));
+ printf_unfiltered ("(sp+%d=%04x)", i,
+ (unsigned int)read_memory_short (rval + i));
}
}
}
void
-register_convert_to_virtual (regnum, from, to)
- unsigned char *from;
- unsigned char *to;
-{
- to[0] = from[0];
- to[1] = from[1];
- to[2] = from[2];
- to[3] = from[3];
-}
-
-void
-register_convert_to_raw (regnum, to, from)
- char *to;
- char *from;
-{
- to[0] = from[0];
- to[1] = from[1];
- to[2] = from[2];
- to[3] = from[3];
-}
-
-void
-z8k_pop_frame ()
+z8k_pop_frame (void)
{
}
struct cmd_list_element *setmemorylist;
void
-z8k_set_pointer_size (newsize)
- int newsize;
+z8k_set_pointer_size (int newsize)
{
static int oldsize = 0;
if (oldsize != newsize)
{
- printf ("pointer size set to %d bits\n", newsize);
+ printf_unfiltered ("pointer size set to %d bits\n", newsize);
oldsize = newsize;
if (newsize == 32)
{
{
BIG = 0;
}
+ /* FIXME: This code should be using the GDBARCH framework to
+ handle changed type sizes. If this problem is ever fixed
+ (the direct reference to _initialize_gdbtypes() below
+ eliminated) then Makefile.in should be updated so that
+ z8k-tdep.c is again compiled with -Werror. */
_initialize_gdbtypes ();
}
}
static void
-segmented_command (args, from_tty)
- char *args;
- int from_tty;
+segmented_command (char *args, int from_tty)
{
z8k_set_pointer_size (32);
}
static void
-unsegmented_command (args, from_tty)
- char *args;
- int from_tty;
+unsegmented_command (char *args, int from_tty)
{
z8k_set_pointer_size (16);
-
}
static void
-set_memory (args, from_tty)
- char *args;
- int from_tty;
+set_memory (char *args, int from_tty)
{
- printf ("\"set memory\" must be followed by the name of a memory subcommand.\n");
- help_list (setmemorylist, "set memory ", -1, stdout);
+ printf_unfiltered ("\"set memory\" must be followed by the name of a memory subcommand.\n");
+ help_list (setmemorylist, "set memory ", -1, gdb_stdout);
}
-_initialize_z8ktdep ()
+void
+_initialize_z8ktdep (void)
{
+ tm_print_insn = gdb_print_insn_z8k;
+
add_prefix_cmd ("memory", no_class, set_memory,
"set the memory model", &setmemorylist, "set memory ", 0,
&setlist);
projects / deliverable / binutils-gdb.git / blobdiff