/* Parameters for execution on a H8/500 series machine.
- Copyright (C) 1993 Free Software Foundation, Inc.
+ Copyright (C) 1993, 1995 Free Software Foundation, Inc.
This file is part of GDB.
#define TARGET_BYTE_ORDER BIG_ENDIAN
-#undef TARGET_INT_BIT
+/* Define the sizes of integers and pointers. */
+
#define TARGET_INT_BIT 16
-#undef TARGET_LONG_BIT
#define TARGET_LONG_BIT 32
-#undef TARGET_PTR_BIT
#define TARGET_PTR_BIT (minimum_mode ? 16 : 32)
-
/* Offset from address of function to start of its code.
Zero on most machines. */
/* Advance PC across any function entry prologue instructions
to reach some "real" code. */
-#define SKIP_PROLOGUE(ip) {(ip) = h8500_skip_prologue(ip);}
-extern CORE_ADDR h8500_skip_prologue ();
-
+#define SKIP_PROLOGUE(ip) { (ip) = h8500_skip_prologue(ip); }
+extern CORE_ADDR h8500_skip_prologue PARAMS ((CORE_ADDR));
/* Immediately after a function call, return the saved pc.
Can't always go through the frames for this because on some machines
the new frame is not set up until the new function executes
some instructions. */
-#define SAVED_PC_AFTER_CALL(frame) saved_pc_after_call(frame)
-
+#define SAVED_PC_AFTER_CALL(frame) saved_pc_after_call()
+extern CORE_ADDR saved_pc_after_call PARAMS ((void));
/* Stack grows downward. */
/* Illegal instruction - used by the simulator for breakpoint
detection */
-#define BREAKPOINT {0x0b}
+#define BREAKPOINT {0x0b}
/* If your kernel resets the pc after the trap happens you may need to
define this before including this file. */
#define DECR_PC_AFTER_BREAK 0
-
+#if 0 /* never used */
/* Nonzero if instruction at PC is a return instruction. */
#define ABOUT_TO_RETURN(pc) about_to_return(pc)
+#endif
/* Say how long registers are. */
for register N. */
#define REGISTER_RAW_SIZE(N) h8500_register_size(N)
-int h8500_register_size PARAMS ((int regno));
+extern int h8500_register_size PARAMS ((int regno));
#define REGISTER_SIZE 4
of data in register N. */
#define REGISTER_VIRTUAL_TYPE(N) h8500_register_virtual_type(N)
-struct type *h8500_register_virtual_type PARAMS ((int regno));
+extern struct type *h8500_register_virtual_type PARAMS ((int regno));
/* Initializer for an array of names of registers.
Entries beyond the first NUM_REGS are ignored. */
#define REGISTER_NAMES \
- {"r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", \
- "pr0", "pr1", "pr2","pr3","pr4","pr5","pr6","pr7","cp","dp","ep","tp","sr","pc"}
-
-
-/* Register numbers of various important registers.
- Note that some of these values are "real" register numbers,
- and correspond to the general registers of the machine,
- and some are "phony" register numbers which are too large
- to be actual register numbers as far as the user is concerned
- but do serve to get the desired values when passed to read_register. */
+ { "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", \
+ "pr0","pr1","pr2","pr3","pr4","pr5","pr6","pr7", \
+ "cp", "dp", "ep", "tp", "sr", "pc"}
+/* Register numbers of various important registers. Note that some of
+ these values are "real" register numbers, and correspond to the
+ general registers of the machine, and some are "phony" register
+ numbers which are too large to be actual register numbers as far as
+ the user is concerned but do serve to get the desired values when
+ passed to read_register. */
#define R0_REGNUM 0
#define R1_REGNUM 1
#define R6_REGNUM 6
#define R7_REGNUM 7
-
#define PR0_REGNUM 8
#define PR1_REGNUM 9
#define PR2_REGNUM 10
#define SEG_E_REGNUM 18
#define SEG_T_REGNUM 19
-
#define CCR_REGNUM 20 /* Contains processor status */
#define PC_REGNUM 21 /* Contains program counter */
-
#define NUM_REGS 22
-
#define SP_REGNUM PR7_REGNUM /* Contains address of top of stack */
#define FP_REGNUM PR6_REGNUM /* Contains address of executing stack frame */
-#define PTR_SIZE (minimum_mode ? 2: 4)
+#define PTR_SIZE (minimum_mode ? 2 : 4)
#define PTR_MASK (minimum_mode ? 0x0000ffff : 0x00ffffff)
/* Store the address of the place in which to copy the structure the
#define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \
memcpy (VALBUF, (char *)(REGBUF), TYPE_LENGTH(TYPE))
-
/* Write into appropriate registers a function return value
- of type TYPE, given in virtual format. Assumes floats are passed
- in d0/d1. */
-
+ of type TYPE, given in virtual format. */
#define STORE_RETURN_VALUE(TYPE,VALBUF) \
write_register_bytes (0, VALBUF, TYPE_LENGTH (TYPE))
-
/* Extract from an array REGBUF containing the (raw) register state
the address in which a function should return its structure value,
as a CORE_ADDR (or an expression that can be used as one). */
#define EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) (*(CORE_ADDR *)(REGBUF))
-\f
+\f
/* Define other aspects of the stack frame. */
/* A macro that tells us whether the function invocation represented
by FI does not have a frame on the stack associated with it. If it
does not, FRAMELESS is set to 1, else 0. */
+
#define FRAMELESS_FUNCTION_INVOCATION(FI, FRAMELESS) \
(FRAMELESS) = frameless_look_for_prologue(FI)
*/
-CORE_ADDR h8500_frame_chain PARAMS ((struct frame_info *));
-
#define INIT_EXTRA_FRAME_INFO(fromleaf, fci) ;
/* (fci)->frame |= read_register(SEG_T_REGNUM) << 16;*/
#define FRAME_CHAIN(FRAME) h8500_frame_chain(FRAME)
+struct frame_info;
+extern CORE_ADDR h8500_frame_chain PARAMS ((struct frame_info *));
#define FRAME_SAVED_PC(FRAME) frame_saved_pc(FRAME)
+extern CORE_ADDR frame_saved_pc PARAMS ((struct frame_info *frame));
-#define FRAME_ARGS_ADDRESS(fi) frame_args_address(fi)
+#define FRAME_ARGS_ADDRESS(fi) ((fi)->frame)
-#define FRAME_LOCALS_ADDRESS(fi) frame_locals_address(fi);
+#define FRAME_LOCALS_ADDRESS(fi) ((fi)->frame)
/* Set VAL to the number of args passed to frame described by FI.
Can set VAL to -1, meaning no way to tell. */
#define FRAME_FIND_SAVED_REGS(frame_info, frame_saved_regs) \
frame_find_saved_regs(frame_info, &(frame_saved_regs))
+struct frame_saved_regs;
+extern void frame_find_saved_regs PARAMS ((struct frame_info *frame_info, struct frame_saved_regs *frame_saved_regs));
\f
-/* Push an empty stack frame, to record the current PC, etc. */
-
-/*#define PUSH_DUMMY_FRAME { h8300_push_dummy_frame (); }*/
-
/* Discard from the stack the innermost frame, restoring all registers. */
-#define POP_FRAME { h8300_pop_frame (); }
+#define POP_FRAME { h8500_pop_frame (); }
+extern void h8500_pop_frame PARAMS ((void));
#define SHORT_INT_MAX 32767
#define SHORT_INT_MIN -32768
-
#define NAMES_HAVE_UNDERSCORE
typedef unsigned short INSN_WORD;
#define read_memory_short(x) (read_memory_integer(x,2) & 0xffff)
#define PRINT_REGISTER_HOOK(regno) print_register_hook(regno)
+extern void print_register_hook PARAMS ((int));
-int minimum_mode;
+extern int minimum_mode;
#define CALL_DUMMY_LENGTH 10
/* Fake variables to make it easy to use 24 bit register pointers */
-int h8500_is_trapped_internalvar PARAMS ((char *name));
#define IS_TRAPPED_INTERNALVAR h8500_is_trapped_internalvar
+extern int h8500_is_trapped_internalvar PARAMS ((char *name));
-struct value * h8500_value_of_trapped_internalvar (/* struct internalvar *var */);
#define VALUE_OF_TRAPPED_INTERNALVAR h8500_value_of_trapped_internalvar
+extern struct value * h8500_value_of_trapped_internalvar (/* struct internalvar *var */);
-void h8500_set_trapped_internalvar (/* struct internalvar *var, value newval, int bitpos, int bitsize, int offset */);
#define SET_TRAPPED_INTERNALVAR h8500_set_trapped_internalvar
+extern void h8500_set_trapped_internalvar (/* struct internalvar *var, value newval, int bitpos, int bitsize, int offset */);
-int regoff[NUM_REGS];
-
-CORE_ADDR h8500_read_sp PARAMS ((void));
-void h8500_write_sp PARAMS ((CORE_ADDR));
+extern CORE_ADDR h8500_read_sp PARAMS ((void));
+extern void h8500_write_sp PARAMS ((CORE_ADDR));
-CORE_ADDR h8500_read_fp PARAMS ((void));
-void h8500_write_fp PARAMS ((CORE_ADDR));
+extern CORE_ADDR h8500_read_fp PARAMS ((void));
+extern void h8500_write_fp PARAMS ((CORE_ADDR));
-CORE_ADDR h8500_read_pc PARAMS ((int));
-void h8500_write_pc PARAMS ((CORE_ADDR, int));
+extern CORE_ADDR h8500_read_pc PARAMS ((int));
+extern void h8500_write_pc PARAMS ((CORE_ADDR, int));
#define TARGET_READ_SP() h8500_read_sp()
#define TARGET_WRITE_SP(x) h8500_write_sp(x)
#define TARGET_READ_FP() h8500_read_fp()
#define TARGET_WRITE_FP(x) h8500_write_fp(x)
-#define GDB_TARGET_IS_H8500
-/* Target-machine dependent code for Hitachi H8/500, for GDB.
+/* Target-dependent code for Hitachi H8/500, for GDB.
Copyright 1993, 1994, 1995 Free Software Foundation, Inc.
This file is part of GDB.
#include "gdbcmd.h"
#include "value.h"
#include "dis-asm.h"
-#include "../opcodes/h8500-opc.h"
-;
+#include "gdbcore.h"
#define UNSIGNED_SHORT(X) ((X) & 0xffff)
-int code_size = 2;
-int data_size = 2;
-/* Shape of an H8/500 frame :
+static int code_size = 2;
+
+static int data_size = 2;
+/* Shape of an H8/500 frame :
arg-n
..
*/
-
/* an easy to debug H8 stack frame looks like:
0x6df6 push r6
0x0d76 mov.w r7,r6
#define LINK_16 0x1f
int minimum_mode = 1;
-CORE_ADDR examine_prologue ();
-
-void frame_find_saved_regs ();
-
CORE_ADDR
h8500_skip_prologue (start_pc)
CORE_ADDR start_pc;
-
{
short int w;
- w = read_memory_integer (start_pc, 1);
+ w = read_memory_integer (start_pc, 1);
if (w == LINK_8)
{
start_pc += 2;
return 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
return 0;
}
-/* Examine the prologue of a function. `ip' points to the first instruction.
- `limit' is the limit of the prologue (e.g. the addr of the first
- linenumber, or perhaps the program counter if we're stepping through).
- `frame_sp' is the stack pointer value in use in this frame.
- `fsr' is a pointer to a frame_saved_regs structure into which we put
- info about the registers saved by this frame.
- `fi' is a struct frame_info pointer; we fill in various fields in it
- to reflect the offsets of the arg pointer and the locals pointer. */
-
+/* Examine the prologue of a function. `ip' points to the first
+ instruction. `limit' is the limit of the prologue (e.g. the addr
+ of the first linenumber, or perhaps the program counter if we're
+ stepping through). `frame_sp' is the stack pointer value in use in
+ this frame. `fsr' is a pointer to a frame_saved_regs structure
+ into which we put info about the registers saved by this frame.
+ `fi' is a struct frame_info pointer; we fill in various fields in
+ it to reflect the offsets of the arg pointer and the locals
+ pointer. */
/* Return the saved PC from this frame. */
return read_memory_integer (FRAME_FP (frame) + 2, PTR_SIZE);
}
-CORE_ADDR
-frame_locals_address (fi)
- struct frame_info *fi;
-{
- return fi->frame;
-}
-
-/* Return the address of the argument block for the frame
- described by FI. Returns 0 if the address is unknown. */
-
-CORE_ADDR
-frame_args_address (fi)
- struct frame_info *fi;
-{
- return fi->frame;
-}
-
-void
-h8300_pop_frame ()
+void
+h8500_pop_frame ()
{
unsigned regnum;
struct frame_saved_regs fsr;
for (regnum = 0; regnum < 8; regnum++)
{
if (fsr.regs[regnum])
- write_register (regnum, read_memory_short (fsr.regs[regnum]));
+ write_register (regnum, read_memory_short (fsr.regs[regnum]));
flush_cached_frames ();
}
-
}
void
print_register_hook (regno)
+ int regno;
{
if (regno == CCR_REGNUM)
{
h8500_register_size (regno)
int regno;
{
- switch (regno) {
- case SEG_C_REGNUM:
- case SEG_D_REGNUM:
- case SEG_E_REGNUM:
- case SEG_T_REGNUM:
- return 1;
- case R0_REGNUM:
- case R1_REGNUM:
- case R2_REGNUM:
- case R3_REGNUM:
- case R4_REGNUM:
- case R5_REGNUM:
- case R6_REGNUM:
- case R7_REGNUM:
- case CCR_REGNUM:
- return 2;
-
- case PR0_REGNUM:
- case PR1_REGNUM:
- case PR2_REGNUM:
- case PR3_REGNUM:
- case PR4_REGNUM:
- case PR5_REGNUM:
- case PR6_REGNUM:
- case PR7_REGNUM:
- case PC_REGNUM:
- return 4;
- }
+ switch (regno)
+ {
+ case SEG_C_REGNUM:
+ case SEG_D_REGNUM:
+ case SEG_E_REGNUM:
+ case SEG_T_REGNUM:
+ return 1;
+ case R0_REGNUM:
+ case R1_REGNUM:
+ case R2_REGNUM:
+ case R3_REGNUM:
+ case R4_REGNUM:
+ case R5_REGNUM:
+ case R6_REGNUM:
+ case R7_REGNUM:
+ case CCR_REGNUM:
+ return 2;
+
+ case PR0_REGNUM:
+ case PR1_REGNUM:
+ case PR2_REGNUM:
+ case PR3_REGNUM:
+ case PR4_REGNUM:
+ case PR5_REGNUM:
+ case PR6_REGNUM:
+ case PR7_REGNUM:
+ case PC_REGNUM:
+ return 4;
+ default:
+ abort ();
+ }
}
struct type *
frame_find_saved_regs (frame_info, frame_saved_regs)
struct frame_info *frame_info;
struct frame_saved_regs *frame_saved_regs;
-
{
register int regnum;
register int regmask;
(frame_saved_regs)->regs[PC_REGNUM] = (frame_info)->frame + 2;
}
-saved_pc_after_call (frame)
+CORE_ADDR
+saved_pc_after_call ()
{
int x;
int a = read_register (SP_REGNUM);
+
x = read_memory_integer (a, code_size);
if (code_size == 2)
{
return x;
}
-
+#if 0 /* never called */
/* Nonzero if instruction at PC is a return instruction. */
+int
about_to_return (pc)
+ CORE_ADDR pc;
{
int b1 = read_memory_integer (pc, 1);
}
return 0;
}
-
+#endif
void
h8500_set_pointer_size (newsize)
}
}
+static void
+big_command ()
+{
+ h8500_set_pointer_size (32);
+ code_size = 4;
+ data_size = 4;
+}
-struct cmd_list_element *setmemorylist;
+static void
+medium_command ()
+{
+ h8500_set_pointer_size (32);
+ code_size = 4;
+ data_size = 2;
+}
+static void
+compact_command ()
+{
+ h8500_set_pointer_size (32);
+ code_size = 2;
+ data_size = 4;
+}
-#define C(name,a,b,c) name () { h8500_set_pointer_size(a); code_size = b; data_size = c; }
+static void
+small_command ()
+{
+ h8500_set_pointer_size (16);
+ code_size = 2;
+ data_size = 2;
+}
-C(big_command, 32,4,4);
-C(medium_command, 32, 4,2);
-C(compact_command, 32,2,4);
-C(small_command, 16,2,2);
+static struct cmd_list_element *setmemorylist;
static void
set_memory (args, from_tty)
parse_and_eval (expression);
}
-void
-_initialize_h8500_tdep ()
-{
- add_prefix_cmd ("memory", no_class, set_memory,
- "set the memory model", &setmemorylist, "set memory ", 0,
- &setlist);
-
- add_cmd ("small", class_support, small_command,
- "Set small memory model. (16 bit code, 16 bit data)", &setmemorylist);
-
- add_cmd ("big", class_support, big_command,
- "Set big memory model. (32 bit code, 32 bit data)", &setmemorylist);
-
- add_cmd ("medium", class_support, medium_command,
- "Set medium memory model. (32 bit code, 16 bit data)", &setmemorylist);
-
- add_cmd ("compact", class_support, compact_command,
- "Set compact memory model. (16 bit code, 32 bit data)", &setmemorylist);
-
-}
-
CORE_ADDR
h8500_read_sp ()
{
void
_initialize_h8500_tdep ()
{
- tm_print_insn = gdb_print_insn_sh;
+ tm_print_insn = print_insn_h8500;
+
+ add_prefix_cmd ("memory", no_class, set_memory,
+ "set the memory model", &setmemorylist, "set memory ", 0,
+ &setlist);
+
+ add_cmd ("small", class_support, small_command,
+ "Set small memory model. (16 bit code, 16 bit data)", &setmemorylist);
+
+ add_cmd ("big", class_support, big_command,
+ "Set big memory model. (32 bit code, 32 bit data)", &setmemorylist);
+
+ add_cmd ("medium", class_support, medium_command,
+ "Set medium memory model. (32 bit code, 16 bit data)", &setmemorylist);
+
+ add_cmd ("compact", class_support, compact_command,
+ "Set compact memory model. (16 bit code, 32 bit data)", &setmemorylist);
+
}
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