/* Target-machine dependent code for Hitachi H8/300, for GDB.
- Copyright (C) 1988, 1990, 1991 Free Software Foundation, Inc.
+ Copyright 1988, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1998, 1999,
+ 2000, 2001 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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
+ Contributed by Steve Chamberlain
*/
#include "defs.h"
#include "gdbcore.h"
#include "gdb_string.h"
#include "value.h"
+#include "regcache.h"
extern int h8300hmode, h8300smode;
static char *original_register_names[] = REGISTER_NAMES;
static char *h8300h_register_names[] =
- {"er0", "er1", "er2", "er3", "er4", "er5", "er6",
- "sp", "ccr","pc","cycles","tick","inst" };
+{"er0", "er1", "er2", "er3", "er4", "er5", "er6",
+ "sp", "ccr", "pc", "cycles", "tick", "inst"};
char **h8300_register_names = original_register_names;
/* Local function declarations. */
static CORE_ADDR examine_prologue ();
-static void set_machine_hook PARAMS ((char *filename));
+static void set_machine_hook (char *filename);
-void h8300_frame_find_saved_regs ();
-
-CORE_ADDR
-h8300_skip_prologue (start_pc)
- CORE_ADDR start_pc;
+CORE_ADDR
+h8300_skip_prologue (CORE_ADDR start_pc)
{
short int w;
int adjust = 0;
}
int
-gdb_print_insn_h8300 (memaddr, info)
- bfd_vma memaddr;
- disassemble_info *info;
+gdb_print_insn_h8300 (bfd_vma memaddr, disassemble_info *info)
{
if (h8300smode)
return print_insn_h8300s (memaddr, info);
the function prologue to determine the caller's sp value, and return it. */
CORE_ADDR
-h8300_frame_chain (thisframe)
- struct frame_info *thisframe;
+h8300_frame_chain (struct frame_info *thisframe)
{
- if (PC_IN_CALL_DUMMY(thisframe->pc, thisframe->frame, thisframe->frame))
- { /* initialize the from_pc now */
+ if (PC_IN_CALL_DUMMY (thisframe->pc, thisframe->frame, thisframe->frame))
+ { /* initialize the from_pc now */
thisframe->from_pc = generic_read_register_dummy (thisframe->pc,
- thisframe->frame,
+ thisframe->frame,
PC_REGNUM);
return thisframe->frame;
}
fairly expensive. */
void
-h8300_frame_find_saved_regs (fi, fsr)
- struct frame_info *fi;
- struct frame_saved_regs *fsr;
+h8300_frame_find_saved_regs (struct frame_info *fi,
+ struct frame_saved_regs *fsr)
{
register struct frame_saved_regs *cache_fsr;
CORE_ADDR ip;
fi->fsr = cache_fsr;
- if (PC_IN_CALL_DUMMY(fi->pc, fi->frame, fi->frame))
- { /* no more to do. */
+ if (PC_IN_CALL_DUMMY (fi->pc, fi->frame, fi->frame))
+ { /* no more to do. */
if (fsr)
*fsr = *fi->fsr;
return;
}
/* Find the start and end of the function prologue. If the PC
- is in the function prologue, we only consider the part that
- has executed already. */
+ is in the function prologue, we only consider the part that
+ has executed already. */
ip = get_pc_function_start (fi->pc);
sal = find_pc_line (ip, 0);
/* 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;
- INSN_WORD *pword1;
+NEXT_PROLOGUE_INSN (CORE_ADDR addr, CORE_ADDR lim, INSN_WORD *pword1)
{
char buf[2];
if (addr < lim + 8)
to reflect the offsets of the arg pointer and the locals pointer. */
static CORE_ADDR
-examine_prologue (ip, limit, after_prolog_fp, fsr, fi)
- register CORE_ADDR ip;
- register CORE_ADDR limit;
- CORE_ADDR after_prolog_fp;
- struct frame_saved_regs *fsr;
- struct frame_info *fi;
+examine_prologue (register CORE_ADDR ip, register CORE_ADDR limit,
+ CORE_ADDR after_prolog_fp, struct frame_saved_regs *fsr,
+ struct frame_info *fi)
{
register CORE_ADDR next_ip;
int r;
/* Rememeber any others too */
in_frame[PC_REGNUM] = 0;
-
+
if (have_fp)
/* We keep the old FP in the SP spot */
fsr->regs[SP_REGNUM] = read_memory_unsigned_integer (fsr->regs[6], BINWORD);
}
void
-h8300_init_extra_frame_info (fromleaf, fi)
- int fromleaf;
- struct frame_info *fi;
+h8300_init_extra_frame_info (int fromleaf, struct frame_info *fi)
{
fi->fsr = 0; /* Not yet allocated */
fi->args_pointer = 0; /* Unknown */
fi->locals_pointer = 0; /* Unknown */
fi->from_pc = 0;
- if (PC_IN_CALL_DUMMY(fi->pc, fi->frame, fi->frame))
- { /* anything special to do? */
+ if (PC_IN_CALL_DUMMY (fi->pc, fi->frame, fi->frame))
+ { /* anything special to do? */
return;
}
}
just use the register SRP_REGNUM itself. */
CORE_ADDR
-h8300_frame_saved_pc (frame)
- struct frame_info *frame;
+h8300_frame_saved_pc (struct frame_info *frame)
{
- if (PC_IN_CALL_DUMMY(frame->pc, frame->frame, frame->frame))
+ if (PC_IN_CALL_DUMMY (frame->pc, frame->frame, frame->frame))
return generic_read_register_dummy (frame->pc, frame->frame, PC_REGNUM);
else
return frame->from_pc;
}
CORE_ADDR
-frame_locals_address (fi)
- struct frame_info *fi;
+h8300_frame_locals_address (struct frame_info *fi)
{
- if (PC_IN_CALL_DUMMY(fi->pc, fi->frame, fi->frame))
+ if (PC_IN_CALL_DUMMY (fi->pc, fi->frame, fi->frame))
return (CORE_ADDR) 0; /* Not sure what else to do... */
if (!fi->locals_pointer)
{
described by FI. Returns 0 if the address is unknown. */
CORE_ADDR
-frame_args_address (fi)
- struct frame_info *fi;
+h8300_frame_args_address (struct frame_info *fi)
{
- if (PC_IN_CALL_DUMMY(fi->pc, fi->frame, fi->frame))
+ if (PC_IN_CALL_DUMMY (fi->pc, fi->frame, fi->frame))
return (CORE_ADDR) 0; /* Not sure what else to do... */
if (!fi->args_pointer)
{
optimization. I suspect this is a compiler bug. Arguments of
these odd sizes are left-justified within the word (as opposed to
arguments smaller than WORDSIZE bytes, which are right-justified).
-
+
If the function is to return an aggregate type such as a struct,
the caller must allocate space into which the callee will copy the
return value. In this case, a pointer to the return value location
the other arguments passed in via registers R0 to R2. */
CORE_ADDR
-h8300_push_arguments(nargs, args, sp, struct_return, struct_addr)
- int nargs;
- struct value **args;
- CORE_ADDR sp;
- unsigned char struct_return;
- CORE_ADDR struct_addr;
+h8300_push_arguments (int nargs, struct value **args, CORE_ADDR sp,
+ unsigned char struct_return, CORE_ADDR struct_addr)
{
int stack_align, stack_alloc, stack_offset;
int wordsize;
if (h8300hmode || h8300smode)
{
stack_align = 3;
- wordsize = 4;
+ wordsize = 4;
}
else
{
stack_align = 1;
- wordsize = 2;
+ wordsize = 2;
}
/* first force sp to a n-byte alignment */
sp = sp & ~stack_align;
/* Now make sure there's space on the stack */
- for (argnum = 0, stack_alloc = 0;
+ for (argnum = 0, stack_alloc = 0;
argnum < nargs; argnum++)
- stack_alloc += ((TYPE_LENGTH(VALUE_TYPE(args[argnum])) + stack_align)
+ stack_alloc += ((TYPE_LENGTH (VALUE_TYPE (args[argnum])) + stack_align)
& ~stack_align);
- sp -= stack_alloc; /* make room on stack for args */
+ sp -= stack_alloc; /* make room on stack for args */
/* we may over-allocate a little here, but that won't hurt anything */
- argreg = ARG0_REGNUM;
- if (struct_return) /* "struct return" pointer takes up one argreg */
+ argreg = ARG0_REGNUM;
+ if (struct_return) /* "struct return" pointer takes up one argreg */
{
write_register (argreg++, struct_addr);
}
{
type = VALUE_TYPE (args[argnum]);
len = TYPE_LENGTH (type);
- memset(valbuf, 0, sizeof(valbuf));
+ memset (valbuf, 0, sizeof (valbuf));
if (len < wordsize)
{
/* the purpose of this is to right-justify the value within the word */
- memcpy(valbuf + (wordsize - len),
- (char *) VALUE_CONTENTS (args[argnum]), len);
+ memcpy (valbuf + (wordsize - len),
+ (char *) VALUE_CONTENTS (args[argnum]), len);
val = valbuf;
}
else
val = (char *) VALUE_CONTENTS (args[argnum]);
- if (len > (ARGLAST_REGNUM+1 - argreg) * REGISTER_RAW_SIZE(ARG0_REGNUM) ||
- (len > wordsize && (len & stack_align) != 0))
- { /* passed on the stack */
- write_memory (sp + stack_offset, val,
+ if (len > (ARGLAST_REGNUM + 1 - argreg) * REGISTER_RAW_SIZE (ARG0_REGNUM) ||
+ (len > wordsize && (len & stack_align) != 0))
+ { /* passed on the stack */
+ write_memory (sp + stack_offset, val,
len < wordsize ? wordsize : len);
stack_offset += (len + stack_align) & ~stack_align;
}
/* NOTE WELL!!!!! This is not an "else if" clause!!!
- That's because some *&^%$ things get passed on the stack
- AND in the registers! */
- if (len <= (ARGLAST_REGNUM+1 - argreg) * REGISTER_RAW_SIZE(ARG0_REGNUM))
+ That's because some *&^%$ things get passed on the stack
+ AND in the registers! */
+ if (len <= (ARGLAST_REGNUM + 1 - argreg) * REGISTER_RAW_SIZE (ARG0_REGNUM))
while (len > 0)
- { /* there's room in registers */
+ { /* there's room in registers */
regval = extract_address (val, wordsize);
write_register (argreg, regval);
len -= wordsize;
a JSR/BSR instruction. */
CORE_ADDR
-h8300_push_return_address (pc, sp)
- CORE_ADDR pc;
- CORE_ADDR sp;
+h8300_push_return_address (CORE_ADDR pc, CORE_ADDR sp)
{
unsigned char buf[4];
int wordsize;
return sp;
}
-/* Function: pop_frame
+/* Function: h8300_pop_frame
Restore the machine to the state it had before the current frame
was created. Usually used either by the "RETURN" command, or by
call_function_by_hand after the dummy_frame is finished. */
-void
-h8300_pop_frame ()
+void
+h8300_pop_frame (void)
{
unsigned regnum;
struct frame_saved_regs fsr;
struct frame_info *frame = get_current_frame ();
- if (PC_IN_CALL_DUMMY(frame->pc, frame->frame, frame->frame))
+ if (PC_IN_CALL_DUMMY (frame->pc, frame->frame, frame->frame))
{
- generic_pop_dummy_frame();
+ generic_pop_dummy_frame ();
}
else
{
/* Don't forget SP_REGNUM is a frame_saved_regs struct is the
actual value we want, not the address of the value we want. */
if (fsr.regs[regnum] && regnum != SP_REGNUM)
- write_register (regnum,
- read_memory_integer(fsr.regs[regnum], BINWORD));
+ write_register (regnum,
+ read_memory_integer (fsr.regs[regnum], BINWORD));
else if (fsr.regs[regnum] && regnum == SP_REGNUM)
write_register (regnum, frame->frame + 2 * BINWORD);
}
Copy that into VALBUF. Be sure to account for CPU type. */
void
-h8300_extract_return_value (type, regbuf, valbuf)
- struct type *type;
- char *regbuf;
- char *valbuf;
+h8300_extract_return_value (struct type *type, char *regbuf, char *valbuf)
{
int wordsize, len;
else
wordsize = 2;
- len = TYPE_LENGTH(type);
-
- switch (len) {
- case 1: /* (char) */
- case 2: /* (short), (int) */
- memcpy (valbuf, regbuf + REGISTER_BYTE(0) + (wordsize - len), len);
- break;
- case 4: /* (long), (float) */
- if (h8300smode || h8300hmode)
- {
- memcpy (valbuf, regbuf + REGISTER_BYTE(0), 4);
- }
- else
- {
- memcpy (valbuf, regbuf + REGISTER_BYTE(0), 2);
- memcpy (valbuf+2, regbuf + REGISTER_BYTE(1), 2);
- }
- break;
- case 8: /* (double) (doesn't seem to happen, which is good,
- because this almost certainly isn't right. */
- error ("I don't know how a double is returned.");
- break;
- }
+ len = TYPE_LENGTH (type);
+
+ switch (len)
+ {
+ case 1: /* (char) */
+ case 2: /* (short), (int) */
+ memcpy (valbuf, regbuf + REGISTER_BYTE (0) + (wordsize - len), len);
+ break;
+ case 4: /* (long), (float) */
+ if (h8300smode || h8300hmode)
+ {
+ memcpy (valbuf, regbuf + REGISTER_BYTE (0), 4);
+ }
+ else
+ {
+ memcpy (valbuf, regbuf + REGISTER_BYTE (0), 2);
+ memcpy (valbuf + 2, regbuf + REGISTER_BYTE (1), 2);
+ }
+ break;
+ case 8: /* (double) (doesn't seem to happen, which is good,
+ because this almost certainly isn't right. */
+ error ("I don't know how a double is returned.");
+ break;
+ }
}
/* Function: store_return_value
Place the appropriate value in the appropriate registers.
Primarily used by the RETURN command. */
-void
-h8300_store_return_value (type, valbuf)
- struct type *type;
- char *valbuf;
+void
+h8300_store_return_value (struct type *type, char *valbuf)
{
int wordsize, len, regval;
-
+
if (h8300hmode || h8300smode)
wordsize = 4;
else
wordsize = 2;
- len = TYPE_LENGTH(type);
- switch (len) {
- case 1: /* char */
- case 2: /* short, int */
- regval = extract_address(valbuf, len);
- write_register (0, regval);
- break;
- case 4: /* long, float */
- regval = extract_address(valbuf, len);
- if (h8300smode || h8300hmode)
- {
- write_register (0, regval);
- }
- else
- {
- write_register (0, regval >> 16);
- write_register (1, regval & 0xffff);
- }
- break;
- case 8: /* presumeably double, but doesn't seem to happen */
- error ("I don't know how to return a double.");
- break;
- }
+ len = TYPE_LENGTH (type);
+ switch (len)
+ {
+ case 1: /* char */
+ case 2: /* short, int */
+ regval = extract_address (valbuf, len);
+ write_register (0, regval);
+ break;
+ case 4: /* long, float */
+ regval = extract_address (valbuf, len);
+ if (h8300smode || h8300hmode)
+ {
+ write_register (0, regval);
+ }
+ else
+ {
+ write_register (0, regval >> 16);
+ write_register (1, regval & 0xffff);
+ }
+ break;
+ case 8: /* presumeably double, but doesn't seem to happen */
+ error ("I don't know how to return a double.");
+ break;
+ }
}
struct cmd_list_element *setmemorylist;
static void
-set_register_names ()
+set_register_names (void)
{
if (h8300hmode != 0)
h8300_register_names = h8300h_register_names;
}
static void
-h8300_command(args, from_tty)
+h8300_command (char *args, int from_tty)
{
extern int h8300hmode;
h8300hmode = 0;
}
static void
-h8300h_command(args, from_tty)
+h8300h_command (char *args, int from_tty)
{
extern int h8300hmode;
h8300hmode = 1;
}
static void
-h8300s_command(args, from_tty)
+h8300s_command (char *args, int from_tty)
{
extern int h8300smode;
extern int h8300hmode;
}
-static void
-set_machine (args, from_tty)
- char *args;
- int from_tty;
+static void
+set_machine (char *args, int from_tty)
{
printf_unfiltered ("\"set machine\" must be followed by h8300, h8300h");
printf_unfiltered ("or h8300s");
to be 16 or 32 bits as appropriate for the machine. */
static void
-set_machine_hook (filename)
- char *filename;
+set_machine_hook (char *filename)
{
if (bfd_get_mach (exec_bfd) == bfd_mach_h8300s)
{
h8300smode = 1;
h8300hmode = 1;
}
- else
- if (bfd_get_mach (exec_bfd) == bfd_mach_h8300h)
+ else if (bfd_get_mach (exec_bfd) == bfd_mach_h8300h)
{
h8300smode = 0;
h8300hmode = 1;
}
void
-_initialize_h8300m ()
+_initialize_h8300m (void)
{
add_prefix_cmd ("machine", no_class, set_machine,
- "set the machine type",
+ "set the machine type",
&setmemorylist, "set machine ", 0,
&setlist);
/* Add a hook to set the machine type when we're loading a file. */
- specify_exec_file_hook(set_machine_hook);
+ specify_exec_file_hook (set_machine_hook);
}
void
-print_register_hook (regno)
+h8300_print_register_hook (int regno)
{
if (regno == 8)
{
unsigned char b[4];
unsigned char l;
read_relative_register_raw_bytes (regno, b);
- l = b[REGISTER_VIRTUAL_SIZE(8) -1];
+ l = b[REGISTER_VIRTUAL_SIZE (8) - 1];
printf_unfiltered ("\t");
printf_unfiltered ("I-%d - ", (l & 0x80) != 0);
printf_unfiltered ("H-%d - ", (l & 0x20) != 0);
}
void
-_initialize_h8300_tdep ()
+_initialize_h8300_tdep (void)
{
tm_print_insn = gdb_print_insn_h8300;
}
projects / binutils.git / blobdiff