/* Target-machine dependent code for Motorola MCore for GDB, the GNU debugger
- Copyright 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
+
+ Copyright 1999, 2000, 2001, 2002, 2003, 2004 Free Software
+ Foundation, Inc.
This file is part of GDB.
#include "value.h"
#include "gdbcmd.h"
#include "regcache.h"
-#include "symfile.h"
+#include "objfiles.h"
#include "gdbcore.h"
#include "inferior.h"
#include "arch-utils.h"
#include "gdb_string.h"
+#include "disasm.h"
+#include "dis-asm.h"
-/* Functions declared and used only in this file */
-
-static CORE_ADDR mcore_analyze_prologue (struct frame_info *fi, CORE_ADDR pc, int skip_prologue);
-
-static struct frame_info *analyze_dummy_frame (CORE_ADDR pc, CORE_ADDR frame);
-
+static CORE_ADDR mcore_analyze_prologue (struct frame_info *fi, CORE_ADDR pc,
+ int skip_prologue);
static int get_insn (CORE_ADDR pc);
-/* Functions exported from this file */
-
-int mcore_use_struct_convention (int gcc_p, struct type *type);
-
-void _initialize_mcore (void);
-
-void mcore_init_extra_frame_info (int fromleaf, struct frame_info *fi);
-
-CORE_ADDR mcore_frame_saved_pc (struct frame_info *fi);
-
-CORE_ADDR mcore_find_callers_reg (struct frame_info *fi, int regnum);
-
-CORE_ADDR mcore_frame_args_address (struct frame_info *fi);
-
-CORE_ADDR mcore_frame_locals_address (struct frame_info *fi);
-
-CORE_ADDR mcore_push_return_address (CORE_ADDR pc, CORE_ADDR sp);
-
-CORE_ADDR mcore_push_arguments (int nargs, struct value ** args, CORE_ADDR sp,
- int struct_return, CORE_ADDR struct_addr);
-
-void mcore_pop_frame ();
-
-CORE_ADDR mcore_skip_prologue (CORE_ADDR pc);
-
-CORE_ADDR mcore_frame_chain (struct frame_info *fi);
-
-const unsigned char *mcore_breakpoint_from_pc (CORE_ADDR * bp_addr, int *bp_size);
-
-int mcore_use_struct_convention (int gcc_p, struct type *type);
-
-void mcore_store_return_value (struct type *type, char *valbuf);
-
-CORE_ADDR mcore_extract_struct_value_address (char *regbuf);
-
-void mcore_extract_return_value (struct type *type, char *regbuf, char *valbuf);
-
#ifdef MCORE_DEBUG
int mcore_debug = 0;
#endif
{
printf_filtered ("MCORE: %s %08x %08x ",
commnt, (unsigned int) pc, (unsigned int) insn);
- TARGET_PRINT_INSN (pc, &tm_print_insn_info);
+ gdb_print_insn (pc, gdb_stdout);
printf_filtered ("\n");
}
}
instructions are 16 bits, this is all we need, regardless of
address. bpkt = 0x0000 */
-const unsigned char *
+static const unsigned char *
mcore_breakpoint_from_pc (CORE_ADDR * bp_addr, int *bp_size)
{
static char breakpoint[] =
static struct frame_info *
analyze_dummy_frame (CORE_ADDR pc, CORE_ADDR frame)
{
- static struct frame_info *dummy = NULL;
-
- if (dummy == NULL)
- {
- struct frame_extra_info *extra_info;
- CORE_ADDR *saved_regs;
- dummy = deprecated_frame_xmalloc ();
- saved_regs = (CORE_ADDR *) xmalloc (SIZEOF_FRAME_SAVED_REGS);
- deprecated_set_frame_saved_regs_hack (dummy, saved_regs);
- extra_info = XMALLOC (struct frame_extra_info);
- deprecated_set_frame_extra_info_hack (dummy, extra_info);
- }
-
- deprecated_set_frame_next_hack (dummy, NULL);
- deprecated_set_frame_prev_hack (dummy, NULL);
+ struct cleanup *old_chain = make_cleanup (null_cleanup, NULL);
+ struct frame_info *dummy
+ = deprecated_frame_xmalloc_with_cleanup (SIZEOF_FRAME_SAVED_REGS,
+ sizeof (struct frame_extra_info));
deprecated_update_frame_pc_hack (dummy, pc);
deprecated_update_frame_base_hack (dummy, frame);
get_frame_extra_info (dummy)->status = 0;
get_frame_extra_info (dummy)->framesize = 0;
- memset (get_frame_saved_regs (dummy), '\000', SIZEOF_FRAME_SAVED_REGS);
mcore_analyze_prologue (dummy, 0, 0);
+ do_cleanups (old_chain);
return dummy;
}
{
if (register_offsets[rn] >= 0)
{
- get_frame_saved_regs (fi)[rn] = get_frame_base (fi) - register_offsets[rn];
+ deprecated_get_frame_saved_regs (fi)[rn] = get_frame_base (fi) - register_offsets[rn];
mcore_insn_debug (("Saved register %s stored at 0x%08x, value=0x%08x\n",
mcore_register_names[rn], fi->saved_regs[rn],
read_memory_integer (fi->saved_regs[rn], 4)));
then DEPRECATED_INIT_EXTRA_FRAME_INFO and DEPRECATED_INIT_FRAME_PC
will be called for the new frame. */
-CORE_ADDR
+static CORE_ADDR
mcore_frame_chain (struct frame_info * fi)
{
struct frame_info *dummy;
int fp = get_frame_extra_info (dummy)->fp_regnum;
/* Our caller has a frame pointer. */
- if (get_frame_saved_regs (fi)[fp] != 0)
+ if (deprecated_get_frame_saved_regs (fi)[fp] != 0)
{
/* The "FP" was saved on the stack. Don't forget to adjust
the "FP" with the framesize to get a real FP. */
- callers_addr = read_memory_integer (get_frame_saved_regs (fi)[fp], REGISTER_SIZE)
+ callers_addr = read_memory_integer (deprecated_get_frame_saved_regs (fi)[fp],
+ DEPRECATED_REGISTER_SIZE)
+ get_frame_extra_info (dummy)->framesize;
}
else
/* Skip the prologue of the function at PC. */
-CORE_ADDR
+static CORE_ADDR
mcore_skip_prologue (CORE_ADDR pc)
{
CORE_ADDR func_addr, func_end;
}
/* Return the address at which function arguments are offset. */
-CORE_ADDR
+static CORE_ADDR
mcore_frame_args_address (struct frame_info * fi)
{
return get_frame_base (fi) - get_frame_extra_info (fi)->framesize;
}
-CORE_ADDR
+static CORE_ADDR
mcore_frame_locals_address (struct frame_info * fi)
{
return get_frame_base (fi) - get_frame_extra_info (fi)->framesize;
/* Return the frame pointer in use at address PC. */
-void
+static void
mcore_virtual_frame_pointer (CORE_ADDR pc, int *reg, LONGEST *offset)
{
struct frame_info *dummy = analyze_dummy_frame (pc, 0);
/* Find the value of register REGNUM in frame FI. */
-CORE_ADDR
+static CORE_ADDR
mcore_find_callers_reg (struct frame_info *fi, int regnum)
{
for (; fi != NULL; fi = get_next_frame (fi))
get_frame_base (fi)))
return deprecated_read_register_dummy (get_frame_pc (fi),
get_frame_base (fi), regnum);
- else if (get_frame_saved_regs (fi)[regnum] != 0)
- return read_memory_integer (get_frame_saved_regs (fi)[regnum],
- REGISTER_SIZE);
+ else if (deprecated_get_frame_saved_regs (fi)[regnum] != 0)
+ return read_memory_integer (deprecated_get_frame_saved_regs (fi)[regnum],
+ DEPRECATED_REGISTER_SIZE);
}
return read_register (regnum);
/* Find the saved pc in frame FI. */
-CORE_ADDR
+static CORE_ADDR
mcore_frame_saved_pc (struct frame_info * fi)
{
/* This routine gets called when either the user uses the "return"
command, or the call dummy breakpoint gets hit. */
-void
+static void
mcore_pop_frame (void)
{
int rn;
if (DEPRECATED_PC_IN_CALL_DUMMY (get_frame_pc (fi), get_frame_base (fi),
get_frame_base (fi)))
- generic_pop_dummy_frame ();
+ deprecated_pop_dummy_frame ();
else
{
/* Write out the PC we saved. */
/* Restore any saved registers. */
for (rn = 0; rn < NUM_REGS; rn++)
{
- if (get_frame_saved_regs (fi)[rn] != 0)
+ if (deprecated_get_frame_saved_regs (fi)[rn] != 0)
{
ULONGEST value;
- value = read_memory_unsigned_integer (get_frame_saved_regs (fi)[rn],
- REGISTER_SIZE);
+ value = read_memory_unsigned_integer (deprecated_get_frame_saved_regs (fi)[rn],
+ DEPRECATED_REGISTER_SIZE);
write_register (rn, value);
}
}
/* Setup arguments and PR for a call to the target. First six arguments
go in FIRST_ARGREG -> LAST_ARGREG, subsequent args go on to the stack.
- * Types with lengths greater than REGISTER_SIZE may not be split
- between registers and the stack, and they must start in an even-numbered
- register. Subsequent args will go onto the stack.
+ - Types with lengths greater than DEPRECATED_REGISTER_SIZE may not
+ be split between registers and the stack, and they must start in an
+ even-numbered register. Subsequent args will go onto the stack.
* Structs may be split between registers and stack, left-aligned.
FIRST_ARGREG, since the MCORE treats struct returns (of less than eight
bytes) as hidden first arguments. */
-CORE_ADDR
+static CORE_ADDR
mcore_push_arguments (int nargs, struct value **args, CORE_ADDR sp,
int struct_return, CORE_ADDR struct_addr)
{
numbered register. */
olen = len;
- if (TYPE_CODE (type) != TYPE_CODE_STRUCT && len > REGISTER_SIZE && argreg % 2)
+ if (TYPE_CODE (type) != TYPE_CODE_STRUCT && len > DEPRECATED_REGISTER_SIZE && argreg % 2)
{
- mcore_insn_debug (("MCORE PUSH: %d > REGISTER_SIZE: and %s is not even\n",
+ mcore_insn_debug (("MCORE PUSH: %d > DEPRECATED_REGISTER_SIZE: and %s is not even\n",
len, mcore_register_names[argreg]));
argreg++;
}
- if ((argreg <= LAST_ARGREG && len <= (LAST_ARGREG - argreg + 1) * REGISTER_SIZE)
+ if ((argreg <= LAST_ARGREG && len <= (LAST_ARGREG - argreg + 1) * DEPRECATED_REGISTER_SIZE)
|| (TYPE_CODE (type) == TYPE_CODE_STRUCT))
{
/* Something that will fit entirely into registers (or a struct
which may be split between registers and stack). */
mcore_insn_debug (("MCORE PUSH: arg %d going into regs\n", argnum));
- if (TYPE_CODE (type) == TYPE_CODE_STRUCT && olen < REGISTER_SIZE)
+ if (TYPE_CODE (type) == TYPE_CODE_STRUCT && olen < DEPRECATED_REGISTER_SIZE)
{
/* Small structs must be right aligned within the register,
the most significant bits are undefined. */
while (len > 0 && argreg <= LAST_ARGREG)
{
- write_register (argreg, extract_unsigned_integer (val, REGISTER_SIZE));
+ write_register (argreg, extract_unsigned_integer (val, DEPRECATED_REGISTER_SIZE));
argreg++;
- val += REGISTER_SIZE;
- len -= REGISTER_SIZE;
+ val += DEPRECATED_REGISTER_SIZE;
+ len -= DEPRECATED_REGISTER_SIZE;
}
/* Any remainder for the stack is noted below... */
}
else if (TYPE_CODE (VALUE_TYPE (args[argnum])) != TYPE_CODE_STRUCT
- && len > REGISTER_SIZE)
+ && len > DEPRECATED_REGISTER_SIZE)
{
/* All subsequent args go onto the stack. */
mcore_insn_debug (("MCORE PUSH: does not fit into regs, going onto stack\n"));
return sp;
}
-/* Store the return address for the call dummy. For MCore, we've
- opted to use generic call dummies, so we simply store the
- CALL_DUMMY_ADDRESS into the PR register (r15). */
+/* Store the return address for the call dummy. For MCore, we've opted
+ to use generic call dummies, so we simply store the entry-point
+ address into the PR register (r15). */
-CORE_ADDR
+static CORE_ADDR
mcore_push_return_address (CORE_ADDR pc, CORE_ADDR sp)
{
- write_register (PR_REGNUM, CALL_DUMMY_ADDRESS ());
+ write_register (PR_REGNUM, entry_point_address ());
return sp;
}
argument.
For gdb, this leaves us two routes, based on what
- USE_STRUCT_CONVENTION (mcore_use_struct_convention) returns.
- If this macro returns 1, gdb will call STORE_STRUCT_RETURN and
- EXTRACT_STRUCT_VALUE_ADDRESS.
-
- If USE_STRUCT_CONVENTION retruns 0, then gdb uses STORE_RETURN_VALUE
- and EXTRACT_RETURN_VALUE to store/fetch the functions return value. */
+ USE_STRUCT_CONVENTION (mcore_use_struct_convention) returns. If
+ this macro returns 1, gdb will call STORE_STRUCT_RETURN to store
+ the return value.
-/* Should we use EXTRACT_STRUCT_VALUE_ADDRESS instead of
- EXTRACT_RETURN_VALUE? GCC_P is true if compiled with gcc
- and TYPE is the type (which is known to be struct, union or array). */
+ If USE_STRUCT_CONVENTION returns 0, then gdb uses
+ STORE_RETURN_VALUE and EXTRACT_RETURN_VALUE to store/fetch the
+ functions return value. */
-int
+static int
mcore_use_struct_convention (int gcc_p, struct type *type)
{
return (TYPE_LENGTH (type) > 8);
}
-/* Where is the return value saved? For MCore, a pointer to
- this buffer was passed as a hidden first argument, so
- just return that address. */
-
-CORE_ADDR
-mcore_extract_struct_value_address (char *regbuf)
-{
- return extract_address (regbuf + REGISTER_BYTE (FIRST_ARGREG), REGISTER_SIZE);
-}
-
/* Given a function which returns a value of type TYPE, extract the
the function's return value and place the result into VALBUF.
REGBUF is the register contents of the target. */
-void
+static void
mcore_extract_return_value (struct type *type, char *regbuf, char *valbuf)
{
/* Copy the return value (starting) in RETVAL_REGNUM to VALBUF. */
/* Only getting the first byte! if len = 1, we need the last byte of
the register, not the first. */
- memcpy (valbuf, regbuf + REGISTER_BYTE (RETVAL_REGNUM) +
+ memcpy (valbuf, regbuf + DEPRECATED_REGISTER_BYTE (RETVAL_REGNUM) +
(TYPE_LENGTH (type) < 4 ? 4 - TYPE_LENGTH (type) : 0), TYPE_LENGTH (type));
}
significant word) and r3 (least significant word, left justified).
Note that this includes structures of less than eight bytes, too. */
-void
+static void
mcore_store_return_value (struct type *type, char *valbuf)
{
int value_size;
value_size = TYPE_LENGTH (type);
/* Return value fits into registers. */
- return_size = (value_size + REGISTER_SIZE - 1) & ~(REGISTER_SIZE - 1);
- offset = REGISTER_BYTE (RETVAL_REGNUM) + (return_size - value_size);
+ return_size = (value_size + DEPRECATED_REGISTER_SIZE - 1) & ~(DEPRECATED_REGISTER_SIZE - 1);
+ offset = DEPRECATED_REGISTER_BYTE (RETVAL_REGNUM) + (return_size - value_size);
zeros = alloca (return_size);
memset (zeros, 0, return_size);
- deprecated_write_register_bytes (REGISTER_BYTE (RETVAL_REGNUM), zeros,
+ deprecated_write_register_bytes (DEPRECATED_REGISTER_BYTE (RETVAL_REGNUM), zeros,
return_size);
deprecated_write_register_bytes (offset, valbuf, value_size);
}
This includes allocating space for saved registers and analyzing
the prologue of this frame. */
-void
+static void
mcore_init_extra_frame_info (int fromleaf, struct frame_info *fi)
{
if (fi && get_next_frame (fi))
if (DEPRECATED_PC_IN_CALL_DUMMY (get_frame_pc (fi), get_frame_base (fi),
get_frame_base (fi)))
{
- /* We need to setup fi->frame here because run_stack_dummy gets it wrong
- by assuming it's always FP. */
+ /* We need to setup fi->frame here because call_function_by_hand
+ gets it wrong by assuming it's always FP. */
deprecated_update_frame_base_hack (fi, deprecated_read_register_dummy (get_frame_pc (fi), get_frame_base (fi), SP_REGNUM));
}
else
static struct gdbarch *
mcore_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
{
- static LONGEST call_dummy_words[7] = { };
struct gdbarch_tdep *tdep = NULL;
struct gdbarch *gdbarch;
/* NOTE: cagney/2002-12-06: This can be deleted when this arch is
ready to unwind the PC first (see frame.c:get_prev_frame()). */
- set_gdbarch_deprecated_init_frame_pc (gdbarch, init_frame_pc_default);
+ set_gdbarch_deprecated_init_frame_pc (gdbarch, deprecated_init_frame_pc_default);
/* Registers: */
/* All registers are 32 bits */
- set_gdbarch_register_size (gdbarch, MCORE_REG_SIZE);
+ set_gdbarch_deprecated_register_size (gdbarch, MCORE_REG_SIZE);
set_gdbarch_deprecated_max_register_raw_size (gdbarch, MCORE_REG_SIZE);
set_gdbarch_deprecated_max_register_virtual_size (gdbarch, MCORE_REG_SIZE);
set_gdbarch_register_name (gdbarch, mcore_register_name);
- set_gdbarch_register_virtual_type (gdbarch, mcore_register_virtual_type);
- set_gdbarch_register_virtual_size (gdbarch, mcore_register_size);
- set_gdbarch_register_raw_size (gdbarch, mcore_register_size);
- set_gdbarch_register_byte (gdbarch, mcore_register_byte);
- set_gdbarch_register_bytes (gdbarch, MCORE_REG_SIZE * MCORE_NUM_REGS);
+ set_gdbarch_deprecated_register_virtual_type (gdbarch, mcore_register_virtual_type);
+ set_gdbarch_deprecated_register_virtual_size (gdbarch, mcore_register_size);
+ set_gdbarch_deprecated_register_raw_size (gdbarch, mcore_register_size);
+ set_gdbarch_deprecated_register_byte (gdbarch, mcore_register_byte);
+ set_gdbarch_deprecated_register_bytes (gdbarch, MCORE_REG_SIZE * MCORE_NUM_REGS);
set_gdbarch_num_regs (gdbarch, MCORE_NUM_REGS);
set_gdbarch_pc_regnum (gdbarch, 64);
set_gdbarch_sp_regnum (gdbarch, 0);
- set_gdbarch_fp_regnum (gdbarch, 0);
+ set_gdbarch_deprecated_fp_regnum (gdbarch, 0);
/* Call Dummies: */
- set_gdbarch_call_dummy_words (gdbarch, call_dummy_words);
- set_gdbarch_sizeof_call_dummy_words (gdbarch, 0);
- set_gdbarch_save_dummy_frame_tos (gdbarch, generic_save_dummy_frame_tos);
- set_gdbarch_saved_pc_after_call (gdbarch, mcore_saved_pc_after_call);
- set_gdbarch_function_start_offset (gdbarch, 0);
- set_gdbarch_decr_pc_after_break (gdbarch, 0);
+ set_gdbarch_deprecated_saved_pc_after_call (gdbarch, mcore_saved_pc_after_call);
set_gdbarch_breakpoint_from_pc (gdbarch, mcore_breakpoint_from_pc);
set_gdbarch_deprecated_push_return_address (gdbarch, mcore_push_return_address);
set_gdbarch_deprecated_push_arguments (gdbarch, mcore_push_arguments);
set_gdbarch_deprecated_extract_return_value (gdbarch,
mcore_extract_return_value);
set_gdbarch_deprecated_store_struct_return (gdbarch, mcore_store_struct_return);
- set_gdbarch_deprecated_extract_struct_value_address (gdbarch,
- mcore_extract_struct_value_address);
set_gdbarch_skip_prologue (gdbarch, mcore_skip_prologue);
- set_gdbarch_frame_args_skip (gdbarch, 0);
- set_gdbarch_frame_args_address (gdbarch, mcore_frame_args_address);
- set_gdbarch_frame_locals_address (gdbarch, mcore_frame_locals_address);
- set_gdbarch_frame_num_args (gdbarch, frame_num_args_unknown);
+ set_gdbarch_deprecated_frame_args_address (gdbarch, mcore_frame_args_address);
+ set_gdbarch_deprecated_frame_locals_address (gdbarch, mcore_frame_locals_address);
set_gdbarch_deprecated_pop_frame (gdbarch, mcore_pop_frame);
set_gdbarch_virtual_frame_pointer (gdbarch, mcore_virtual_frame_pointer);
set_gdbarch_believe_pcc_promotion (gdbarch, 1);
/* MCore will never pass a sturcture by reference. It will always be split
between registers and stack. */
- set_gdbarch_reg_struct_has_addr (gdbarch, mcore_reg_struct_has_addr);
+ set_gdbarch_deprecated_reg_struct_has_addr
+ (gdbarch, mcore_reg_struct_has_addr);
/* Should be using push_dummy_call. */
- set_gdbarch_deprecated_dummy_write_sp (gdbarch, generic_target_write_sp);
+ set_gdbarch_deprecated_dummy_write_sp (gdbarch, deprecated_write_sp);
+
+ set_gdbarch_print_insn (gdbarch, print_insn_mcore);
return gdbarch;
}
}
+extern initialize_file_ftype _initialize_mcore_tdep; /* -Wmissing-prototypes */
+
void
_initialize_mcore_tdep (void)
{
- extern int print_insn_mcore (bfd_vma, disassemble_info *);
gdbarch_register (bfd_arch_mcore, mcore_gdbarch_init, mcore_dump_tdep);
- tm_print_insn = print_insn_mcore;
#ifdef MCORE_DEBUG
add_show_from_set (add_set_cmd ("mcoredebug", no_class,
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