/* Target-machine dependent code for Zilog Z8000, for GDB.
- Copyright (C) 1992, 1993, 1994 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.
just use the register SRP_REGNUM itself. */
CORE_ADDR
-frame_saved_pc (frame)
- struct frame_info *frame;
+z8k_frame_saved_pc (struct frame_info *frame)
{
return read_memory_pointer (frame->frame + (BIG ? 4 : 2));
}
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);
}
-int
-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);
}
CORE_ADDR
-frame_chain (thisframe)
- struct frame_info *thisframe;
+z8k_frame_chain (struct frame_info *thisframe)
{
- if (thisframe->prev == 0)
- {
- /* 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 0;
}
-init_frame_pc ()
-{
- abort ();
-}
-
/* 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
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
-gdb_print_insn_z8k (memaddr, info)
- bfd_vma memaddr;
- disassemble_info *info;
+gdb_print_insn_z8k (bfd_vma memaddr, disassemble_info *info)
{
if (BIG)
return print_insn_z8001 (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 = FRAME_FP (fip) - locals;
+ adr = get_frame_base (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);
}
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);
+ deprecated_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);
}
-void
-print_register_hook (regno)
- int regno;
+static void
+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));
+ frame_register_read (deprecated_selected_frame, regno, l + 0);
+ frame_register_read (deprecated_selected_frame, regno + 1, l + 2);
printf_unfiltered ("\t");
- printf_unfiltered ("%04x%04x", l[0], l[1]);
+ 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 (deprecated_selected_frame, regno, l + 0);
+ frame_register_read (deprecated_selected_frame, regno + 1, l + 2);
+ frame_register_read (deprecated_selected_frame, regno + 2, l + 4);
+ frame_register_read (deprecated_selected_frame, regno + 3, l + 6);
printf_unfiltered ("\t");
- printf_unfiltered ("%04x%04x%04x%04x", l[0], l[1], l[2], l[3]);
+ 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 (deprecated_selected_frame, regno, (char *) (&rval));
printf_unfiltered ("\n");
for (i = 0; i < 10; i += 2)
{
- printf_unfiltered ("(sp+%d=%04x)", i, read_memory_short (rval + i));
+ printf_unfiltered ("(sp+%d=%04x)", i,
+ (unsigned int)read_memory_short (rval + i));
}
}
+}
+static void
+z8k_print_registers_info (struct gdbarch *gdbarch,
+ struct ui_file *file,
+ struct frame_info *frame,
+ int regnum, int print_all)
+{
+ int i;
+ const int numregs = NUM_REGS + NUM_PSEUDO_REGS;
+ char *raw_buffer = alloca (MAX_REGISTER_RAW_SIZE);
+ char *virtual_buffer = alloca (MAX_REGISTER_VIRTUAL_SIZE);
+
+ for (i = 0; i < numregs; i++)
+ {
+ /* Decide between printing all regs, non-float / vector regs, or
+ specific reg. */
+ if (regnum == -1)
+ {
+ if (!print_all)
+ {
+ if (TYPE_CODE (REGISTER_VIRTUAL_TYPE (i)) == TYPE_CODE_FLT)
+ continue;
+ if (TYPE_VECTOR (REGISTER_VIRTUAL_TYPE (i)))
+ continue;
+ }
+ }
+ else
+ {
+ if (i != regnum)
+ continue;
+ }
+
+ /* If the register name is empty, it is undefined for this
+ processor, so don't display anything. */
+ if (REGISTER_NAME (i) == NULL || *(REGISTER_NAME (i)) == '\0')
+ continue;
+
+ fputs_filtered (REGISTER_NAME (i), file);
+ print_spaces_filtered (15 - strlen (REGISTER_NAME (i)), file);
+
+ /* Get the data in raw format. */
+ if (! frame_register_read (frame, i, raw_buffer))
+ {
+ fprintf_filtered (file, "*value not available*\n");
+ continue;
+ }
+
+ /* FIXME: cagney/2002-08-03: This code shouldn't be necessary.
+ The function frame_register_read() should have returned the
+ pre-cooked register so no conversion is necessary. */
+ /* Convert raw data to virtual format if necessary. */
+ if (REGISTER_CONVERTIBLE (i))
+ {
+ REGISTER_CONVERT_TO_VIRTUAL (i, REGISTER_VIRTUAL_TYPE (i),
+ raw_buffer, virtual_buffer);
+ }
+ else
+ {
+ memcpy (virtual_buffer, raw_buffer,
+ REGISTER_VIRTUAL_SIZE (i));
+ }
+
+ /* If virtual format is floating, print it that way, and in raw
+ hex. */
+ if (TYPE_CODE (REGISTER_VIRTUAL_TYPE (i)) == TYPE_CODE_FLT)
+ {
+ int j;
+
+ val_print (REGISTER_VIRTUAL_TYPE (i), virtual_buffer, 0, 0,
+ file, 0, 1, 0, Val_pretty_default);
+
+ fprintf_filtered (file, "\t(raw 0x");
+ for (j = 0; j < REGISTER_RAW_SIZE (i); j++)
+ {
+ int idx;
+ if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG)
+ idx = j;
+ else
+ idx = REGISTER_RAW_SIZE (i) - 1 - j;
+ fprintf_filtered (file, "%02x", (unsigned char) raw_buffer[idx]);
+ }
+ fprintf_filtered (file, ")");
+ }
+ else
+ {
+ /* Print the register in hex. */
+ val_print (REGISTER_VIRTUAL_TYPE (i), virtual_buffer, 0, 0,
+ file, 'x', 1, 0, Val_pretty_default);
+ /* If not a vector register, print it also according to its
+ natural format. */
+ if (TYPE_VECTOR (REGISTER_VIRTUAL_TYPE (i)) == 0)
+ {
+ fprintf_filtered (file, "\t");
+ val_print (REGISTER_VIRTUAL_TYPE (i), virtual_buffer, 0, 0,
+ file, 0, 1, 0, Val_pretty_default);
+ }
+ }
+
+ /* Some z8k specific info. */
+ z8k_print_register_hook (i);
+
+ fprintf_filtered (file, "\n");
+ }
+}
+
+void
+z8k_do_registers_info (int regnum, int all)
+{
+ z8k_print_registers_info (current_gdbarch, gdb_stdout,
+ deprecated_selected_frame, regnum, all);
}
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;
{
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_unfiltered ("\"set memory\" must be followed by the name of a memory subcommand.\n");
help_list (setmemorylist, "set memory ", -1, gdb_stdout);
}
void
-_initialize_z8ktdep ()
+_initialize_z8ktdep (void)
{
tm_print_insn = gdb_print_insn_z8k;
projects / deliverable / binutils-gdb.git / blobdiff