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 "frame.h"
#include "obstack.h"
#include "symtab.h"
+#include "dis-asm.h"
+#include "gdbcmd.h"
+#include "gdbtypes.h"
+#include "gdbcore.h"
+#include "gdb_string.h"
+#include "value.h"
+
+extern int h8300hmode, h8300smode;
+
#undef NUM_REGS
#define NUM_REGS 11
#define UNSIGNED_SHORT(X) ((X) & 0xffff)
-/* an easy to debug H8 stack frame looks like:
-0x6df6 push r6
-0x0d76 mov.w r7,r6
-0x6dfn push reg
-0x7905 nnnn mov.w #n,r5 or 0x1b87 subs #2,sp
-0x1957 sub.w r5,sp
-
- */
-
-#define IS_PUSH(x) ((x & 0xff00)==0x6d00)
+#define IS_PUSH(x) ((x & 0xfff0)==0x6df0)
#define IS_PUSH_FP(x) (x == 0x6df6)
-#define IS_MOVE_FP(x) (x == 0x0d76)
-#define IS_MOV_SP_FP(x) (x == 0x0d76)
+#define IS_MOVE_FP(x) (x == 0x0d76 || x == 0x0ff6)
+#define IS_MOV_SP_FP(x) (x == 0x0d76 || x == 0x0ff6)
#define IS_SUB2_SP(x) (x==0x1b87)
+#define IS_SUB4_SP(x) (x==0x1b97)
+#define IS_SUBL_SP(x) (x==0x7a37)
#define IS_MOVK_R5(x) (x==0x7905)
#define IS_SUB_R5SP(x) (x==0x1957)
-CORE_ADDR examine_prologue ();
-void frame_find_saved_regs ();
+/* Local function declarations. */
+
+static CORE_ADDR examine_prologue ();
+static void set_machine_hook PARAMS ((char *filename));
+
+void h8300_frame_find_saved_regs ();
+
CORE_ADDR
h8300_skip_prologue (start_pc)
CORE_ADDR start_pc;
-
{
short int w;
+ int adjust = 0;
- w = read_memory_short (start_pc);
- /* Skip past all push insns */
- while (IS_PUSH_FP (w))
+ /* Skip past all push and stm insns. */
+ while (1)
{
- start_pc += 2;
- w = read_memory_short (start_pc);
+ w = read_memory_unsigned_integer (start_pc, 2);
+ /* First look for push insns. */
+ if (w == 0x0100 || w == 0x0110 || w == 0x0120 || w == 0x0130)
+ {
+ w = read_memory_unsigned_integer (start_pc + 2, 2);
+ adjust = 2;
+ }
+
+ if (IS_PUSH (w))
+ {
+ start_pc += 2 + adjust;
+ w = read_memory_unsigned_integer (start_pc, 2);
+ continue;
+ }
+ adjust = 0;
+ break;
}
- /* Skip past a move to FP */
- if (IS_MOVE_FP (w))
+ /* Skip past a move to FP, either word or long sized */
+ w = read_memory_unsigned_integer (start_pc, 2);
+ if (w == 0x0100)
{
- start_pc += 2;
- w = read_memory_short (start_pc);
+ w = read_memory_unsigned_integer (start_pc + 2, 2);
+ adjust += 2;
}
- /* Skip the stack adjust */
+ if (IS_MOVE_FP (w))
+ {
+ start_pc += 2 + adjust;
+ w = read_memory_unsigned_integer (start_pc, 2);
+ }
+ /* Check for loading either a word constant into r5;
+ long versions are handled by the SUBL_SP below. */
if (IS_MOVK_R5 (w))
{
start_pc += 2;
- w = read_memory_short (start_pc);
+ w = read_memory_unsigned_integer (start_pc, 2);
}
+
+ /* Now check for subtracting r5 from sp, word sized only. */
if (IS_SUB_R5SP (w))
{
- start_pc += 2;
- w = read_memory_short (start_pc);
+ start_pc += 2 + adjust;
+ w = read_memory_unsigned_integer (start_pc, 2);
}
- while (IS_SUB2_SP (w))
+
+ /* Check for subs #2 and subs #4. */
+ while (IS_SUB2_SP (w) || IS_SUB4_SP (w))
{
- start_pc += 2;
- w = read_memory_short (start_pc);
+ start_pc += 2 + adjust;
+ w = read_memory_unsigned_integer (start_pc, 2);
}
- return start_pc;
+ /* Check for a 32bit subtract. */
+ if (IS_SUBL_SP (w))
+ start_pc += 6 + adjust;
+ return start_pc;
}
int
-print_insn (memaddr, stream)
- CORE_ADDR memaddr;
- FILE *stream;
+gdb_print_insn_h8300 (memaddr, info)
+ bfd_vma memaddr;
+ disassemble_info *info;
{
- /* Nothing is bigger than 8 bytes */
- char data[8];
-
- read_memory (memaddr, data, sizeof (data));
- return print_insn_h8300 (memaddr, data, stream);
+ if (h8300smode)
+ return print_insn_h8300s (memaddr, info);
+ else if (h8300hmode)
+ return print_insn_h8300h (memaddr, info);
+ else
+ return print_insn_h8300 (memaddr, info);
}
/* Given a GDB frame, determine the address of the calling function's frame.
For us, the frame address is its stack pointer value, so we look up
the function prologue to determine the caller's sp value, and return it. */
-FRAME_ADDR
-FRAME_CHAIN (thisframe)
- FRAME thisframe;
+CORE_ADDR
+h8300_frame_chain (thisframe)
+ struct frame_info *thisframe;
{
-
- frame_find_saved_regs (thisframe, (struct frame_saved_regs *) 0);
+ 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,
+ PC_REGNUM);
+ return thisframe->frame;
+ }
+ h8300_frame_find_saved_regs (thisframe, (struct frame_saved_regs *) 0);
return thisframe->fsr->regs[SP_REGNUM];
}
it is fairly expensive. */
void
-frame_find_saved_regs (fi, fsr)
+h8300_frame_find_saved_regs (fi, fsr)
struct frame_info *fi;
struct frame_saved_regs *fsr;
{
- register CORE_ADDR next_addr;
- register CORE_ADDR *saved_regs;
- register int regnum;
register struct frame_saved_regs *cache_fsr;
extern struct obstack frame_cache_obstack;
CORE_ADDR ip;
cache_fsr = (struct frame_saved_regs *)
obstack_alloc (&frame_cache_obstack,
sizeof (struct frame_saved_regs));
- bzero (cache_fsr, sizeof (struct frame_saved_regs));
+ memset (cache_fsr, '\0', sizeof (struct frame_saved_regs));
fi->fsr = cache_fsr;
+ 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. */
NEXT_PROLOGUE_INSN (addr, lim, pword1)
CORE_ADDR addr;
CORE_ADDR lim;
- short *pword1;
+ INSN_WORD *pword1;
{
+ char buf[2];
if (addr < lim + 8)
{
- read_memory (addr, pword1, sizeof (*pword1));
- SWAP_TARGET_AND_HOST (pword1, sizeof (short));
+ read_memory (addr, buf, 2);
+ *pword1 = extract_signed_integer (buf, 2);
return addr + 2;
}
examine_prologue (ip, limit, after_prolog_fp, fsr, fi)
register CORE_ADDR ip;
register CORE_ADDR limit;
- FRAME_ADDR after_prolog_fp;
+ CORE_ADDR after_prolog_fp;
struct frame_saved_regs *fsr;
struct frame_info *fi;
{
register CORE_ADDR next_ip;
int r;
- int i;
int have_fp = 0;
-
- register int src;
- register struct pic_prologue_code *pcode;
INSN_WORD insn_word;
- int size, offset;
- unsigned int reg_save_depth = 2; /* Number of things pushed onto
- stack, starts at 2, 'cause the
- PC is already there */
+ /* Number of things pushed onto stack, starts at 2/4, 'cause the
+ PC is already there */
+ unsigned int reg_save_depth = h8300hmode ? 4 : 2;
unsigned int auto_depth = 0; /* Number of bytes of autos */
- char in_frame[8]; /* One for each reg */
+ char in_frame[11]; /* One for each reg */
+
+ int adjust = 0;
- memset (in_frame, 1, 8);
+ memset (in_frame, 1, 11);
for (r = 0; r < 8; r++)
{
fsr->regs[r] = 0;
{
after_prolog_fp = read_register (SP_REGNUM);
}
- if (ip == 0 || ip & ~0xffff)
+
+ /* If the PC isn't valid, quit now. */
+ if (ip == 0 || ip & (h8300hmode ? ~0xffffff : ~0xffff))
return 0;
next_ip = NEXT_PROLOGUE_INSN (ip, limit, &insn_word);
+ if (insn_word == 0x0100)
+ {
+ insn_word = read_memory_unsigned_integer (ip + 2, 2);
+ adjust = 2;
+ }
+
/* Skip over any fp push instructions */
fsr->regs[6] = after_prolog_fp;
while (next_ip && IS_PUSH_FP (insn_word))
{
- ip = next_ip;
+ ip = next_ip + adjust;
in_frame[insn_word & 0x7] = reg_save_depth;
next_ip = NEXT_PROLOGUE_INSN (ip, limit, &insn_word);
- reg_save_depth += 2;
+ reg_save_depth += 2 + adjust;
}
/* Is this a move into the fp */
/* Skip over any stack adjustment, happens either with a number of
sub#2,sp or a mov #x,r5 sub r5,sp */
- if (next_ip && IS_SUB2_SP (insn_word))
+ if (next_ip && (IS_SUB2_SP (insn_word) || IS_SUB4_SP (insn_word)))
{
- while (next_ip && IS_SUB2_SP (insn_word))
+ while (next_ip && (IS_SUB2_SP (insn_word) || IS_SUB4_SP (insn_word)))
{
- auto_depth += 2;
+ auto_depth += IS_SUB2_SP (insn_word) ? 2 : 4;
ip = next_ip;
next_ip = NEXT_PROLOGUE_INSN (ip, limit, &insn_word);
}
next_ip = NEXT_PROLOGUE_INSN (next_ip, limit, &insn_word);
auto_depth += insn_word;
+ }
+ if (next_ip && IS_SUBL_SP (insn_word))
+ {
+ ip = next_ip;
+ auto_depth += read_memory_unsigned_integer (ip, 4);
+ ip += 4;
+ next_ip = NEXT_PROLOGUE_INSN (ip, limit, &insn_word);
}
}
- /* Work out which regs are stored where */
- while (next_ip && IS_PUSH (insn_word))
+
+ /* Now examine the push insns to determine where everything lives
+ on the stack. */
+ while (1)
{
- ip = next_ip;
- next_ip = NEXT_PROLOGUE_INSN (ip, limit, &insn_word);
- fsr->regs[r] = after_prolog_fp + auto_depth;
- auto_depth += 2;
+ adjust = 0;
+ if (!next_ip)
+ break;
+
+ if (insn_word == 0x0100)
+ {
+ ip = next_ip;
+ next_ip = NEXT_PROLOGUE_INSN (ip, limit, &insn_word);
+ adjust = 2;
+ }
+
+ if (IS_PUSH (insn_word))
+ {
+ ip = next_ip;
+ next_ip = NEXT_PROLOGUE_INSN (ip, limit, &insn_word);
+ fsr->regs[r] = after_prolog_fp + auto_depth;
+ auto_depth += 2 + adjust;
+ continue;
+ }
+
+ /* Now check for push multiple insns. */
+ if (insn_word == 0x0110 || insn_word == 0x0120 || insn_word == 0x0130)
+ {
+ int count = ((insn_word >> 4) & 0xf) + 1;
+ int start, i;
+
+ ip = next_ip;
+ next_ip = NEXT_PROLOGUE_INSN (ip, limit, &insn_word);
+ start = insn_word & 0x7;
+
+ for (i = start; i <= start + count; i++)
+ {
+ fsr->regs[i] = after_prolog_fp + auto_depth;
+ auto_depth += 4;
+ }
+ }
+ break;
}
/* The args are always reffed based from the stack pointer */
/* Locals are always reffed based from the fp */
fi->locals_pointer = after_prolog_fp;
/* The PC is at a known place */
- fi->from_pc = read_memory_short (after_prolog_fp + 2);
+ fi->from_pc = read_memory_unsigned_integer (after_prolog_fp + BINWORD, BINWORD);
/* 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_short (fsr->regs[6]));
+ fsr->regs[SP_REGNUM] = read_memory_unsigned_integer (fsr->regs[6], BINWORD);
else
fsr->regs[SP_REGNUM] = after_prolog_fp + auto_depth;
}
void
-init_extra_frame_info (fromleaf, fi)
+h8300_init_extra_frame_info (fromleaf, fi)
int fromleaf;
struct frame_info *fi;
{
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? */
+ return;
+ }
}
/* Return the saved PC from this frame.
just use the register SRP_REGNUM itself. */
CORE_ADDR
-frame_saved_pc (frame)
- FRAME frame;
-
+h8300_frame_saved_pc (frame)
+ struct frame_info *frame;
{
- return frame->from_pc;
+ 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;
{
+ 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)
{
struct frame_saved_regs ignore;
frame_args_address (fi)
struct frame_info *fi;
{
+ 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)
{
struct frame_saved_regs ignore;
return fi->args_pointer;
}
+/* Function: push_arguments
+ Setup the function arguments for calling a function in the inferior.
+
+ On the Hitachi H8/300 architecture, there are three registers (R0 to R2)
+ which are dedicated for passing function arguments. Up to the first
+ three arguments (depending on size) may go into these registers.
+ The rest go on the stack.
+
+ Arguments that are smaller than WORDSIZE bytes will still take up a
+ whole register or a whole WORDSIZE word on the stack, and will be
+ right-justified in the register or the stack word. This includes
+ chars and small aggregate types. Note that WORDSIZE depends on the
+ cpu type.
+
+ Arguments that are larger than WORDSIZE bytes will be split between
+ two or more registers as available, but will NOT be split between a
+ register and the stack.
+
+ An exceptional case exists for struct arguments (and possibly other
+ aggregates such as arrays) -- if the size is larger than WORDSIZE
+ bytes but not a multiple of WORDSIZE bytes. In this case the
+ argument is never split between the registers and the stack, but
+ instead is copied in its entirety onto the stack, AND also copied
+ into as many registers as there is room for. In other words, space
+ in registers permitting, two copies of the same argument are passed
+ in. As far as I can tell, only the one on the stack is used,
+ although that may be a function of the level of compiler
+ 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
+ is passed into the callee in register R0, which displaces one of
+ 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;
+{
+ int stack_align, stack_alloc, stack_offset;
+ int wordsize;
+ int argreg;
+ int argnum;
+ struct type *type;
+ CORE_ADDR regval;
+ char *val;
+ char valbuf[4];
+ int len;
+
+ if (h8300hmode || h8300smode)
+ {
+ stack_align = 3;
+ wordsize = 4;
+ }
+ else
+ {
+ stack_align = 1;
+ 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;
+ argnum < nargs; argnum++)
+ stack_alloc += ((TYPE_LENGTH(VALUE_TYPE(args[argnum])) + stack_align)
+ & ~stack_align);
+ 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 */
+ {
+ write_register (argreg++, struct_addr);
+ }
+
+ /* Now load as many as possible of the first arguments into
+ registers, and push the rest onto the stack. There are 3N bytes
+ in three registers available. Loop thru args from first to last. */
+
+ for (argnum = 0, stack_offset = 0; argnum < nargs; argnum++)
+ {
+ type = VALUE_TYPE (args[argnum]);
+ len = TYPE_LENGTH (type);
+ 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);
+ 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,
+ 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))
+ while (len > 0)
+ { /* there's room in registers */
+ regval = extract_address (val, wordsize);
+ write_register (argreg, regval);
+ len -= wordsize;
+ val += wordsize;
+ argreg++;
+ }
+ }
+ return sp;
+}
+
+/* Function: push_return_address
+ Setup the return address for a dummy frame, as called by
+ call_function_by_hand. Only necessary when you are using an
+ empty CALL_DUMMY, ie. the target will not actually be executing
+ a JSR/BSR instruction. */
+
+CORE_ADDR
+h8300_push_return_address (pc, sp)
+ CORE_ADDR pc;
+ CORE_ADDR sp;
+{
+ unsigned char buf[4];
+ int wordsize;
+
+ if (h8300hmode || h8300smode)
+ wordsize = 4;
+ else
+ wordsize = 2;
+
+ sp -= wordsize;
+ store_unsigned_integer (buf, wordsize, CALL_DUMMY_ADDRESS ());
+ write_memory (sp, buf, wordsize);
+ return sp;
+}
+
+/* Function: 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 ()
{
unsigned regnum;
struct frame_saved_regs fsr;
- struct frame_info *fi;
-
- FRAME frame = get_current_frame ();
+ struct frame_info *frame = get_current_frame ();
- fi = get_frame_info (frame);
- get_frame_saved_regs (fi, &fsr);
-
- for (regnum = 0; regnum < 8; regnum++)
+ if (PC_IN_CALL_DUMMY(frame->pc, frame->frame, frame->frame))
{
- if (fsr.regs[regnum])
+ generic_pop_dummy_frame();
+ }
+ else
+ {
+ get_frame_saved_regs (frame, &fsr);
+
+ for (regnum = 0; regnum < 8; regnum++)
{
- write_register (regnum, read_memory_short (fsr.regs[regnum]));
+ /* 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));
+ else if (fsr.regs[regnum] && regnum == SP_REGNUM)
+ write_register (regnum, frame->frame + 2 * BINWORD);
}
- flush_cached_frames ();
- set_current_frame (create_new_frame (read_register (FP_REGNUM),
- read_pc ()));
+ /* Don't forget the update the PC too! */
+ write_pc (frame->from_pc);
+ }
+ flush_cached_frames ();
+}
+
+/* Function: extract_return_value
+ Figure out where in REGBUF the called function has left its return value.
+ 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;
+{
+ int wordsize, len;
+
+ if (h8300smode || h8300hmode)
+ wordsize = 4;
+ 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;
+ }
+}
+
+/* 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;
+{
+ 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;
+ }
+}
+/* Function: get_saved_register
+ Just call the generic_get_saved_register function. */
+
+void
+get_saved_register (raw_buffer, optimized, addrp, frame, regnum, lval)
+ char *raw_buffer;
+ int *optimized;
+ CORE_ADDR *addrp;
+ struct frame_info *frame;
+ int regnum;
+ enum lval_type *lval;
+{
+ generic_get_saved_register (raw_buffer, optimized, addrp,
+ frame, regnum, lval);
+}
+
+struct cmd_list_element *setmemorylist;
+
+static void
+h8300_command(args, from_tty)
+{
+ extern int h8300hmode;
+ h8300hmode = 0;
+ h8300smode = 0;
+}
+
+static void
+h8300h_command(args, from_tty)
+{
+ extern int h8300hmode;
+ h8300hmode = 1;
+ h8300smode = 0;
+}
+static void
+h8300s_command(args, from_tty)
+{
+ extern int h8300smode;
+ extern int h8300hmode;
+ h8300smode = 1;
+ h8300hmode = 1;
+}
+
+
+static void
+set_machine (args, from_tty)
+ char *args;
+ int from_tty;
+{
+ printf_unfiltered ("\"set machine\" must be followed by h8300, h8300h");
+ printf_unfiltered ("or h8300s");
+ help_list (setmemorylist, "set memory ", -1, gdb_stdout);
+}
+
+/* set_machine_hook is called as the exec file is being opened, but
+ before the symbol file is opened. This allows us to set the
+ h8300hmode flag based on the machine type specified in the exec
+ file. This in turn will cause subsequently defined pointer types
+ to be 16 or 32 bits as appropriate for the machine. */
+
+static void
+set_machine_hook (filename)
+ 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)
+ {
+ h8300smode = 0;
+ h8300hmode = 1;
}
+ else
+ {
+ h8300smode = 0;
+ h8300hmode = 0;
+ }
+}
+
+void
+_initialize_h8300m ()
+{
+ add_prefix_cmd ("machine", no_class, set_machine,
+ "set the machine type",
+ &setmemorylist, "set machine ", 0,
+ &setlist);
+
+ add_cmd ("h8300", class_support, h8300_command,
+ "Set machine to be H8/300.", &setmemorylist);
+
+ add_cmd ("h8300h", class_support, h8300h_command,
+ "Set machine to be H8/300H.", &setmemorylist);
+ add_cmd ("h8300s", class_support, h8300s_command,
+ "Set machine to be H8/300S.", &setmemorylist);
+
+ /* Add a hook to set the machine type when we're loading a file. */
+
+ specify_exec_file_hook(set_machine_hook);
}
+
+
void
print_register_hook (regno)
{
if (regno == 8)
{
/* CCR register */
-
int C, Z, N, V;
- unsigned char b[2];
+ unsigned char b[4];
unsigned char l;
-
read_relative_register_raw_bytes (regno, b);
- l = b[1];
- printf ("\t");
- printf ("I-%d - ", (l & 0x80) != 0);
- printf ("H-%d - ", (l & 0x20) != 0);
+ l = b[REGISTER_VIRTUAL_SIZE(8) -1];
+ printf_unfiltered ("\t");
+ printf_unfiltered ("I-%d - ", (l & 0x80) != 0);
+ printf_unfiltered ("H-%d - ", (l & 0x20) != 0);
N = (l & 0x8) != 0;
Z = (l & 0x4) != 0;
V = (l & 0x2) != 0;
C = (l & 0x1) != 0;
- printf ("N-%d ", N);
- printf ("Z-%d ", Z);
- printf ("V-%d ", V);
- printf ("C-%d ", C);
+ printf_unfiltered ("N-%d ", N);
+ printf_unfiltered ("Z-%d ", Z);
+ printf_unfiltered ("V-%d ", V);
+ printf_unfiltered ("C-%d ", C);
if ((C | Z) == 0)
- printf ("u> ");
+ printf_unfiltered ("u> ");
if ((C | Z) == 1)
- printf ("u<= ");
+ printf_unfiltered ("u<= ");
if ((C == 0))
- printf ("u>= ");
+ printf_unfiltered ("u>= ");
if (C == 1)
- printf ("u< ");
+ printf_unfiltered ("u< ");
if (Z == 0)
- printf ("!= ");
+ printf_unfiltered ("!= ");
if (Z == 1)
- printf ("== ");
+ printf_unfiltered ("== ");
if ((N ^ V) == 0)
- printf (">= ");
+ printf_unfiltered (">= ");
if ((N ^ V) == 1)
- printf ("< ");
+ printf_unfiltered ("< ");
if ((Z | (N ^ V)) == 0)
- printf ("> ");
+ printf_unfiltered ("> ");
if ((Z | (N ^ V)) == 1)
- printf ("<= ");
+ printf_unfiltered ("<= ");
}
}
+
+void
+_initialize_h8300_tdep ()
+{
+ tm_print_insn = gdb_print_insn_h8300;
+}
projects / binutils.git / blobdiff