/* Target-machine dependent code for Zilog Z8000, for GDB.
Copyright (C) 1992, 1993, 1994 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. */
/*
- Contributed by Steve Chamberlain
- sac@cygnus.com
+ Contributed by Steve Chamberlain
+ sac@cygnus.com
*/
#include "defs.h"
#include "gdbcmd.h"
#include "gdbtypes.h"
#include "dis-asm.h"
+#include "gdbcore.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)
+z8k_frame_saved_pc (frame)
struct frame_info *frame;
{
return read_memory_pointer (frame->frame + (BIG ? 4 : 2));
return pc;
}
-int
+static CORE_ADDR examine_frame PARAMS ((CORE_ADDR, CORE_ADDR * regs, CORE_ADDR));
+static CORE_ADDR
examine_frame (pc, regs, sp)
CORE_ADDR pc;
- struct frame_saved_regs *regs;
+ CORE_ADDR *regs;
CORE_ADDR sp;
{
int w = read_memory_short (pc);
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;
}
z8k_skip_prologue (start_pc)
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 (addr)
+ 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)
+z8k_frame_chain (thisframe)
struct frame_info *thisframe;
{
if (thisframe->prev == 0)
return 0;
}
+void
init_frame_pc ()
{
abort ();
the address we return for it IS the sp for the next frame. */
void
-get_frame_saved_regs (frame_info, frame_saved_regs)
+z8k_frame_init_saved_regs (frame_info)
struct frame_info *frame_info;
- struct frame_saved_regs *frame_saved_regs;
-
{
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);
}
/* 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)
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
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));
}
+void
extract_return_value (type, regbuf, valbuf)
struct type *type;
char *regbuf;
int len;
for (len = 0; len < TYPE_LENGTH (type); len += 2)
- write_register_bytes (REGISTER_BYTE (len / 2 + 2), valbuf + len, 2);
+ write_register_bytes (REGISTER_BYTE (len / 2 + 2), valbuf + len, 2);
}
void
void
-print_register_hook (regno)
+z8k_print_register_hook (regno)
int regno;
{
if ((regno & 1) == 0 && regno < 16)
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));
}
}
{
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 ();
}
}
projects / deliverable / binutils-gdb.git / blobdiff