/* Target-machine dependent code for Zilog Z8000, for GDB.
- Copyright (C) 1992,1993 Free Software Foundation, Inc.
+ Copyright (C) 1992, 1993, 1994 Free Software Foundation, Inc.
This file is part of GDB.
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. */
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/*
Contributed by Steve Chamberlain
#include "gdbcmd.h"
#include "gdbtypes.h"
#include "dis-asm.h"
+#include "gdbcore.h"
+
+
/* Return the saved PC from this frame.
If the frame has a memory copy of SRP_REGNUM, use that. If not,
CORE_ADDR
frame_saved_pc (frame)
- FRAME frame;
+ 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 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;
/* 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;
+ 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;
{
-
return read_memory_integer (ADDR_BITS_REMOVE (x), BIG ? 4 : 2);
}
-FRAME_ADDR
+CORE_ADDR
frame_chain (thisframe)
- FRAME thisframe;
+ 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))
+ if (!inside_entry_file (thisframe->pc))
{
- return read_memory_pointer ((thisframe)->frame);
+ return read_memory_pointer (thisframe->frame);
}
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);
}
}
int
-print_insn (memaddr, stream)
- CORE_ADDR memaddr;
- GDB_FILE *stream;
+gdb_print_insn_z8k (memaddr, info)
+ 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
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
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 ()
{
- 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 (type, regbuf, valbuf)
+ 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 (type, valbuf)
+ 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 (addr, sp)
+ CORE_ADDR addr;
+ CORE_ADDR sp;
{
- write_register(2, addr);
+ write_register (2, addr);
}
int from_tty;
{
z8k_set_pointer_size (16);
-
}
static void
void
_initialize_z8ktdep ()
{
+ tm_print_insn = gdb_print_insn_z8k;
+
add_prefix_cmd ("memory", no_class, set_memory,
"set the memory model", &setmemorylist, "set memory ", 0,
&setlist);