/* Target-machine dependent code for Motorola MCore for GDB, the GNU debugger
- Copyright 1999, 2000, 2001 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 (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);
-
-void mcore_virtual_frame_pointer (CORE_ADDR pc, long *reg, long *offset);
-
-CORE_ADDR mcore_push_return_address (CORE_ADDR pc, CORE_ADDR sp);
-
-CORE_ADDR mcore_push_arguments (int nargs, value_ptr * args, CORE_ADDR sp,
- unsigned char struct_return, CORE_ADDR struct_addr);
-
-void mcore_pop_frame (struct frame_info *fi);
-
-CORE_ADDR mcore_skip_prologue (CORE_ADDR pc);
-
-CORE_ADDR mcore_frame_chain (struct frame_info *fi);
-
-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
-/* The registers of the Motorola MCore processors */
-/* *INDENT-OFF* */
-char *mcore_register_names[] =
-{ "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
- "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
- "ar0", "ar1", "ar2", "ar3", "ar4", "ar5", "ar6", "ar7",
- "ar8", "ar9", "ar10", "ar11", "ar12", "ar13", "ar14", "ar15",
- "psr", "vbr", "epsr", "fpsr", "epc", "fpc", "ss0", "ss1",
- "ss2", "ss3", "ss4", "gcr", "gsr", "cr13", "cr14", "cr15",
- "cr16", "cr17", "cr18", "cr19", "cr20", "cr21", "cr22", "cr23",
- "cr24", "cr25", "cr26", "cr27", "cr28", "cr29", "cr30", "cr31",
- "pc" };
-/* *INDENT-ON* */
+/* All registers are 4 bytes long. */
+#define MCORE_REG_SIZE 4
+#define MCORE_NUM_REGS 65
+/* Some useful register numbers. */
+#define PR_REGNUM 15
+#define FIRST_ARGREG 2
+#define LAST_ARGREG 7
+#define RETVAL_REGNUM 2
+
/* Additional info that we use for managing frames */
struct frame_extra_info
{
{
printf_filtered ("MCORE: %s %08x %08x ",
commnt, (unsigned int) pc, (unsigned int) insn);
- (*tm_print_insn) (pc, &tm_print_insn_info);
+ gdb_print_insn (pc, gdb_stdout);
printf_filtered ("\n");
}
}
#define mcore_insn_debug(args) {}
#endif
+
+static struct type *
+mcore_register_virtual_type (int regnum)
+{
+ if (regnum < 0 || regnum >= MCORE_NUM_REGS)
+ internal_error (__FILE__, __LINE__,
+ "mcore_register_virtual_type: illegal register number %d",
+ regnum);
+ else
+ return builtin_type_int;
+}
+
+static int
+mcore_register_byte (int regnum)
+{
+ if (regnum < 0 || regnum >= MCORE_NUM_REGS)
+ internal_error (__FILE__, __LINE__,
+ "mcore_register_byte: illegal register number %d",
+ regnum);
+ else
+ return (regnum * MCORE_REG_SIZE);
+}
+
+static int
+mcore_register_size (int regnum)
+{
+
+ if (regnum < 0 || regnum >= MCORE_NUM_REGS)
+ internal_error (__FILE__, __LINE__,
+ "mcore_register_size: illegal register number %d",
+ regnum);
+ else
+ return MCORE_REG_SIZE;
+}
+
+/* The registers of the Motorola MCore processors */
+
+static const char *
+mcore_register_name (int regnum)
+{
+
+ static char *register_names[] = {
+ "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
+ "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
+ "ar0", "ar1", "ar2", "ar3", "ar4", "ar5", "ar6", "ar7",
+ "ar8", "ar9", "ar10", "ar11", "ar12", "ar13", "ar14", "ar15",
+ "psr", "vbr", "epsr", "fpsr", "epc", "fpc", "ss0", "ss1",
+ "ss2", "ss3", "ss4", "gcr", "gsr", "cr13", "cr14", "cr15",
+ "cr16", "cr17", "cr18", "cr19", "cr20", "cr21", "cr22", "cr23",
+ "cr24", "cr25", "cr26", "cr27", "cr28", "cr29", "cr30", "cr31",
+ "pc"
+ };
+
+ if (regnum < 0 ||
+ regnum >= sizeof (register_names) / sizeof (register_names[0]))
+ internal_error (__FILE__, __LINE__,
+ "mcore_register_name: illegal register number %d",
+ regnum);
+ else
+ return register_names[regnum];
+}
+
/* Given the address at which to insert a breakpoint (BP_ADDR),
what will that breakpoint be?
instructions are 16 bits, this is all we need, regardless of
address. bpkt = 0x0000 */
-unsigned char *
+static const unsigned char *
mcore_breakpoint_from_pc (CORE_ADDR * bp_addr, int *bp_size)
{
static char breakpoint[] =
return breakpoint;
}
+static CORE_ADDR
+mcore_saved_pc_after_call (struct frame_info *frame)
+{
+ return read_register (PR_REGNUM);
+}
+
+/* This is currently handled by init_extra_frame_info. */
+static void
+mcore_frame_init_saved_regs (struct frame_info *frame)
+{
+
+}
+
+/* This is currently handled by mcore_push_arguments */
+static void
+mcore_store_struct_return (CORE_ADDR addr, CORE_ADDR sp)
+{
+
+}
+
+static int
+mcore_reg_struct_has_addr (int gcc_p, struct type *type)
+{
+ return 0;
+}
+
+
/* Helper function for several routines below. This funtion simply
sets up a fake, aka dummy, frame (not a _call_ dummy frame) that
we can analyze with mcore_analyze_prologue. */
static struct frame_info *
analyze_dummy_frame (CORE_ADDR pc, CORE_ADDR frame)
{
- static struct frame_info *dummy = NULL;
-
- if (dummy == NULL)
- {
- dummy = (struct frame_info *) xmalloc (sizeof (struct frame_info));
- dummy->saved_regs = (CORE_ADDR *) xmalloc (SIZEOF_FRAME_SAVED_REGS);
- dummy->extra_info =
- (struct frame_extra_info *) xmalloc (sizeof (struct frame_extra_info));
- }
-
- dummy->next = NULL;
- dummy->prev = NULL;
- dummy->pc = pc;
- dummy->frame = frame;
- dummy->extra_info->status = 0;
- dummy->extra_info->framesize = 0;
- memset (dummy->saved_regs, '\000', SIZEOF_FRAME_SAVED_REGS);
+ 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;
mcore_analyze_prologue (dummy, 0, 0);
+ do_cleanups (old_chain);
return dummy;
}
/* If provided, use the PC in the frame to look up the
start of this function. */
- pc = (fi == NULL ? pc : fi->pc);
+ pc = (fi == NULL ? pc : get_frame_pc (fi));
/* Find the start of this function. */
status = find_pc_partial_function (pc, &name, &func_addr, &func_end);
if (func_addr == entry_point_address ())
{
if (fi != NULL)
- fi->extra_info->status |= NO_MORE_FRAMES;
+ get_frame_extra_info (fi)->status |= NO_MORE_FRAMES;
return pc;
}
if (fi != NULL && IS_RTS (insn))
{
mcore_insn_debug (("MCORE: got jmp r15"));
- if (fi->next == NULL)
- fi->frame = read_sp ();
- return fi->pc;
+ if (get_next_frame (fi) == NULL)
+ deprecated_update_frame_base_hack (fi, read_sp ());
+ return get_frame_pc (fi);
}
/* Check for first insn of prologue */
- if (fi != NULL && fi->pc == func_addr)
+ if (fi != NULL && get_frame_pc (fi) == func_addr)
{
- if (fi->next == NULL)
- fi->frame = read_sp ();
- return fi->pc;
+ if (get_next_frame (fi) == NULL)
+ deprecated_update_frame_base_hack (fi, read_sp ());
+ return get_frame_pc (fi);
}
/* Figure out where to stop scanning */
- stop = (fi ? fi->pc : func_end);
+ stop = (fi ? get_frame_pc (fi) : func_end);
/* Don't walk off the end of the function */
stop = (stop > func_end ? func_end : stop);
/* Save everything we have learned about this frame into FI. */
if (fi != NULL)
{
- fi->extra_info->framesize = framesize;
- fi->extra_info->fp_regnum = fp_regnum;
- fi->extra_info->status = flags;
+ get_frame_extra_info (fi)->framesize = framesize;
+ get_frame_extra_info (fi)->fp_regnum = fp_regnum;
+ get_frame_extra_info (fi)->status = flags;
/* Fix the frame pointer. When gcc uses r8 as a frame pointer,
it is really an arg ptr. We adjust fi->frame to be a "real"
frame pointer. */
- if (fi->next == NULL)
+ if (get_next_frame (fi) == NULL)
{
- if (fi->extra_info->status & MY_FRAME_IN_SP)
- fi->frame = read_sp () + framesize;
+ if (get_frame_extra_info (fi)->status & MY_FRAME_IN_SP)
+ deprecated_update_frame_base_hack (fi, read_sp () + framesize);
else
- fi->frame = read_register (fp_regnum) + framesize;
+ deprecated_update_frame_base_hack (fi, read_register (fp_regnum) + framesize);
}
/* Note where saved registers are stored. The offsets in REGISTER_OFFSETS
{
if (register_offsets[rn] >= 0)
{
- fi->saved_regs[rn] = fi->frame - 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)));
return addr;
}
-/* Given a GDB frame, determine the address of the calling function's frame.
- This will be used to create a new GDB frame struct, and then
- INIT_EXTRA_FRAME_INFO and INIT_FRAME_PC will be called for the new frame. */
+/* Given a GDB frame, determine the address of the calling function's
+ frame. This will be used to create a new GDB frame struct, and
+ 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;
CORE_ADDR callers_addr;
/* Analyze the prologue of this function. */
- if (fi->extra_info->status == 0)
+ if (get_frame_extra_info (fi)->status == 0)
mcore_analyze_prologue (fi, 0, 0);
/* If mcore_analyze_prologue set NO_MORE_FRAMES, quit now. */
- if (fi->extra_info->status & NO_MORE_FRAMES)
+ if (get_frame_extra_info (fi)->status & NO_MORE_FRAMES)
return 0;
/* Now that we've analyzed our prologue, we can start to ask
If our caller does not have a frame pointer, then his frame base
is <our base> + -<caller's frame size>. */
- dummy = analyze_dummy_frame (FRAME_SAVED_PC (fi), fi->frame);
+ dummy = analyze_dummy_frame (DEPRECATED_FRAME_SAVED_PC (fi), get_frame_base (fi));
- if (dummy->extra_info->status & MY_FRAME_IN_FP)
+ if (get_frame_extra_info (dummy)->status & MY_FRAME_IN_FP)
{
- int fp = dummy->extra_info->fp_regnum;
+ int fp = get_frame_extra_info (dummy)->fp_regnum;
/* Our caller has a frame pointer. */
- if (fi->saved_regs[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 (fi->saved_regs[fp], REGISTER_SIZE)
- + dummy->extra_info->framesize;
+ callers_addr = read_memory_integer (deprecated_get_frame_saved_regs (fi)[fp],
+ DEPRECATED_REGISTER_SIZE)
+ + get_frame_extra_info (dummy)->framesize;
}
else
{
/* It's still in the register. Don't forget to adjust
the "FP" with the framesize to get a real FP. */
- callers_addr = read_register (fp) + dummy->extra_info->framesize;
+ callers_addr = read_register (fp) + get_frame_extra_info (dummy)->framesize;
}
}
else
{
/* Our caller does not have a frame pointer. */
- callers_addr = fi->frame + dummy->extra_info->framesize;
+ callers_addr = get_frame_base (fi) + get_frame_extra_info (dummy)->framesize;
}
return callers_addr;
/* 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 fi->frame - fi->extra_info->framesize;
+ 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 fi->frame - fi->extra_info->framesize;
+ return get_frame_base (fi) - get_frame_extra_info (fi)->framesize;
}
/* Return the frame pointer in use at address PC. */
-void
-mcore_virtual_frame_pointer (CORE_ADDR pc, long *reg, long *offset)
+static void
+mcore_virtual_frame_pointer (CORE_ADDR pc, int *reg, LONGEST *offset)
{
struct frame_info *dummy = analyze_dummy_frame (pc, 0);
- if (dummy->extra_info->status & MY_FRAME_IN_SP)
+ if (get_frame_extra_info (dummy)->status & MY_FRAME_IN_SP)
{
*reg = SP_REGNUM;
*offset = 0;
}
else
{
- *reg = dummy->extra_info->fp_regnum;
+ *reg = get_frame_extra_info (dummy)->fp_regnum;
*offset = 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 = fi->next)
+ for (; fi != NULL; fi = get_next_frame (fi))
{
- if (PC_IN_CALL_DUMMY (fi->pc, fi->frame, fi->frame))
- return generic_read_register_dummy (fi->pc, fi->frame, regnum);
- else if (fi->saved_regs[regnum] != 0)
- return read_memory_integer (fi->saved_regs[regnum],
- REGISTER_SIZE);
+ if (DEPRECATED_PC_IN_CALL_DUMMY (get_frame_pc (fi), get_frame_base (fi),
+ get_frame_base (fi)))
+ return deprecated_read_register_dummy (get_frame_pc (fi),
+ get_frame_base (fi), regnum);
+ 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)
{
- if (PC_IN_CALL_DUMMY (fi->pc, fi->frame, fi->frame))
- return generic_read_register_dummy (fi->pc, fi->frame, PC_REGNUM);
+ if (DEPRECATED_PC_IN_CALL_DUMMY (get_frame_pc (fi), get_frame_base (fi),
+ get_frame_base (fi)))
+ return deprecated_read_register_dummy (get_frame_pc (fi),
+ get_frame_base (fi), PC_REGNUM);
else
return mcore_find_callers_reg (fi, PR_REGNUM);
}
/* This routine gets called when either the user uses the "return"
command, or the call dummy breakpoint gets hit. */
-void
-mcore_pop_frame (struct frame_info *fi)
+static void
+mcore_pop_frame (void)
{
int rn;
+ struct frame_info *fi = get_current_frame ();
- if (PC_IN_CALL_DUMMY (fi->pc, fi->frame, fi->frame))
- generic_pop_dummy_frame ();
+ if (DEPRECATED_PC_IN_CALL_DUMMY (get_frame_pc (fi), get_frame_base (fi),
+ get_frame_base (fi)))
+ deprecated_pop_dummy_frame ();
else
{
/* Write out the PC we saved. */
- write_register (PC_REGNUM, FRAME_SAVED_PC (fi));
+ write_register (PC_REGNUM, DEPRECATED_FRAME_SAVED_PC (fi));
/* Restore any saved registers. */
for (rn = 0; rn < NUM_REGS; rn++)
{
- if (fi->saved_regs[rn] != 0)
+ if (deprecated_get_frame_saved_regs (fi)[rn] != 0)
{
ULONGEST value;
- value = read_memory_unsigned_integer (fi->saved_regs[rn],
- REGISTER_SIZE);
+ value = read_memory_unsigned_integer (deprecated_get_frame_saved_regs (fi)[rn],
+ DEPRECATED_REGISTER_SIZE);
write_register (rn, value);
}
}
/* Actually cut back the stack. */
- write_register (SP_REGNUM, FRAME_FP (fi));
+ write_register (SP_REGNUM, get_frame_base (fi));
}
/* Finally, throw away any cached frame information. */
/* 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
-mcore_push_arguments (int nargs, value_ptr * args, CORE_ADDR sp,
- unsigned char struct_return, CORE_ADDR struct_addr)
+static CORE_ADDR
+mcore_push_arguments (int nargs, struct value **args, CORE_ADDR sp,
+ int struct_return, CORE_ADDR struct_addr)
{
int argreg;
int argnum;
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.
+ USE_STRUCT_CONVENTION (mcore_use_struct_convention) returns. If
+ this macro returns 1, gdb will call STORE_STRUCT_RETURN to store
+ the return value.
- If USE_STRUCT_CONVENTION retruns 0, then gdb uses STORE_RETURN_VALUE
- and EXTRACT_RETURN_VALUE to store/fetch the functions return value. */
+ If USE_STRUCT_CONVENTION returns 0, then gdb uses
+ STORE_RETURN_VALUE and EXTRACT_RETURN_VALUE to store/fetch the
+ functions 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). */
-
-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);
- write_register_bytes (REGISTER_BYTE (RETVAL_REGNUM), zeros, return_size);
- write_register_bytes (offset, valbuf, value_size);
+ deprecated_write_register_bytes (DEPRECATED_REGISTER_BYTE (RETVAL_REGNUM), zeros,
+ return_size);
+ deprecated_write_register_bytes (offset, valbuf, value_size);
}
/* Initialize our target-dependent "stuff" for this newly created frame.
This includes allocating space for saved registers and analyzing
the prologue of this frame. */
-void
-mcore_init_extra_frame_info (struct frame_info *fi)
+static void
+mcore_init_extra_frame_info (int fromleaf, struct frame_info *fi)
{
- if (fi->next)
- fi->pc = FRAME_SAVED_PC (fi->next);
+ if (fi && get_next_frame (fi))
+ deprecated_update_frame_pc_hack (fi, DEPRECATED_FRAME_SAVED_PC (get_next_frame (fi)));
frame_saved_regs_zalloc (fi);
- fi->extra_info = (struct frame_extra_info *)
- frame_obstack_alloc (sizeof (struct frame_extra_info));
- fi->extra_info->status = 0;
- fi->extra_info->framesize = 0;
+ frame_extra_info_zalloc (fi, sizeof (struct frame_extra_info));
+ get_frame_extra_info (fi)->status = 0;
+ get_frame_extra_info (fi)->framesize = 0;
- if (PC_IN_CALL_DUMMY (fi->pc, fi->frame, fi->frame))
+ 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. */
- fi->frame = generic_read_register_dummy (fi->pc, fi->frame, SP_REGNUM);
+ /* 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
mcore_analyze_prologue (fi, 0, 0);
return extract_unsigned_integer (buf, 2);
}
+static struct gdbarch *
+mcore_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
+{
+ struct gdbarch_tdep *tdep = NULL;
+ struct gdbarch *gdbarch;
+
+ /* find a candidate among the list of pre-declared architectures. */
+ arches = gdbarch_list_lookup_by_info (arches, &info);
+ if (arches != NULL)
+ return (arches->gdbarch);
+
+ gdbarch = gdbarch_alloc (&info, 0);
+
+ /* 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, deprecated_init_frame_pc_default);
+
+ /* Registers: */
+
+ /* All registers are 32 bits */
+ 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_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_deprecated_fp_regnum (gdbarch, 0);
+
+ /* Call Dummies: */
+
+ 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);
+
+ /* Frames: */
+
+ set_gdbarch_deprecated_init_extra_frame_info (gdbarch, mcore_init_extra_frame_info);
+ set_gdbarch_deprecated_frame_chain (gdbarch, mcore_frame_chain);
+ set_gdbarch_deprecated_frame_init_saved_regs (gdbarch, mcore_frame_init_saved_regs);
+ set_gdbarch_deprecated_frame_saved_pc (gdbarch, mcore_frame_saved_pc);
+ set_gdbarch_deprecated_store_return_value (gdbarch, mcore_store_return_value);
+ set_gdbarch_deprecated_extract_return_value (gdbarch,
+ mcore_extract_return_value);
+ set_gdbarch_deprecated_store_struct_return (gdbarch, mcore_store_struct_return);
+ set_gdbarch_skip_prologue (gdbarch, mcore_skip_prologue);
+ 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);
+
+ /* Misc.: */
+
+ /* Stack grows down. */
+ set_gdbarch_inner_than (gdbarch, core_addr_lessthan);
+ set_gdbarch_use_struct_convention (gdbarch, mcore_use_struct_convention);
+ 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_deprecated_reg_struct_has_addr
+ (gdbarch, mcore_reg_struct_has_addr);
+
+ /* Should be using push_dummy_call. */
+ set_gdbarch_deprecated_dummy_write_sp (gdbarch, deprecated_write_sp);
+
+ set_gdbarch_print_insn (gdbarch, print_insn_mcore);
+
+ return gdbarch;
+}
+
+static void
+mcore_dump_tdep (struct gdbarch *current_gdbarch, struct ui_file *file)
+{
+
+}
+
+extern initialize_file_ftype _initialize_mcore_tdep; /* -Wmissing-prototypes */
+
void
_initialize_mcore_tdep (void)
{
- extern int print_insn_mcore (bfd_vma, disassemble_info *);
- tm_print_insn = print_insn_mcore;
+ gdbarch_register (bfd_arch_mcore, mcore_gdbarch_init, mcore_dump_tdep);
#ifdef MCORE_DEBUG
add_show_from_set (add_set_cmd ("mcoredebug", no_class,
projects / deliverable / binutils-gdb.git / blobdiff