/* Target-dependent code for the Matsushita MN10300 for GDB, the GNU debugger.
- Copyright 1996, 1997, 1998, 1999, 2000, 2001
- Free Software Foundation, Inc.
+
+ Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004 Free
+ Software Foundation, Inc.
This file is part of GDB.
#include "defs.h"
#include "frame.h"
#include "inferior.h"
-#include "obstack.h"
#include "target.h"
#include "value.h"
#include "bfd.h"
#include "gdb_string.h"
#include "gdbcore.h"
-#include "symfile.h"
+#include "objfiles.h"
#include "regcache.h"
#include "arch-utils.h"
+#include "gdb_assert.h"
+#include "dis-asm.h"
+
+#define D0_REGNUM 0
+#define D2_REGNUM 2
+#define D3_REGNUM 3
+#define A0_REGNUM 4
+#define A2_REGNUM 6
+#define A3_REGNUM 7
+#define MDR_REGNUM 10
+#define PSW_REGNUM 11
+#define LIR_REGNUM 12
+#define LAR_REGNUM 13
+#define MDRQ_REGNUM 14
+#define E0_REGNUM 15
+#define MCRH_REGNUM 26
+#define MCRL_REGNUM 27
+#define MCVF_REGNUM 28
+
+enum movm_register_bits {
+ movm_exother_bit = 0x01,
+ movm_exreg1_bit = 0x02,
+ movm_exreg0_bit = 0x04,
+ movm_other_bit = 0x08,
+ movm_a3_bit = 0x10,
+ movm_a2_bit = 0x20,
+ movm_d3_bit = 0x40,
+ movm_d2_bit = 0x80
+};
extern void _initialize_mn10300_tdep (void);
static CORE_ADDR mn10300_analyze_prologue (struct frame_info *fi,
return regs[reg];
}
-static char *
+static const char *
mn10300_generic_register_name (int reg)
{
static char *regs[] =
}
-static char *
+static const char *
am33_register_name (int reg)
{
static char *regs[] =
return register_name (reg, regs, sizeof regs);
}
-CORE_ADDR
+static CORE_ADDR
mn10300_saved_pc_after_call (struct frame_info *fi)
{
return read_memory_integer (read_register (SP_REGNUM), 4);
}
-void
+static void
mn10300_extract_return_value (struct type *type, char *regbuf, char *valbuf)
{
if (TYPE_CODE (type) == TYPE_CODE_PTR)
- memcpy (valbuf, regbuf + REGISTER_BYTE (4), TYPE_LENGTH (type));
+ memcpy (valbuf, regbuf + DEPRECATED_REGISTER_BYTE (4), TYPE_LENGTH (type));
else
- memcpy (valbuf, regbuf + REGISTER_BYTE (0), TYPE_LENGTH (type));
+ memcpy (valbuf, regbuf + DEPRECATED_REGISTER_BYTE (0), TYPE_LENGTH (type));
}
-CORE_ADDR
-mn10300_extract_struct_value_address (char *regbuf)
-{
- return extract_address (regbuf + REGISTER_BYTE (4),
- REGISTER_RAW_SIZE (4));
-}
-
-void
+static void
mn10300_store_return_value (struct type *type, char *valbuf)
{
if (TYPE_CODE (type) == TYPE_CODE_PTR)
- write_register_bytes (REGISTER_BYTE (4), valbuf, TYPE_LENGTH (type));
+ deprecated_write_register_bytes (DEPRECATED_REGISTER_BYTE (4), valbuf,
+ TYPE_LENGTH (type));
else
- write_register_bytes (REGISTER_BYTE (0), valbuf, TYPE_LENGTH (type));
+ deprecated_write_register_bytes (DEPRECATED_REGISTER_BYTE (0), valbuf,
+ TYPE_LENGTH (type));
}
static struct frame_info *analyze_dummy_frame (CORE_ADDR, CORE_ADDR);
static struct frame_info *
analyze_dummy_frame (CORE_ADDR pc, CORE_ADDR frame)
{
- static struct frame_info *dummy = NULL;
- if (dummy == NULL)
- {
- dummy = xmalloc (sizeof (struct frame_info));
- dummy->saved_regs = xmalloc (SIZEOF_FRAME_SAVED_REGS);
- dummy->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->stack_size = 0;
- memset (dummy->saved_regs, '\000', SIZEOF_FRAME_SAVED_REGS);
- mn10300_analyze_prologue (dummy, 0);
+ 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)->stack_size = 0;
+ mn10300_analyze_prologue (dummy, pc);
+ do_cleanups (old_chain);
return dummy;
}
/* Should call_function allocate stack space for a struct return? */
-int
+static int
mn10300_use_struct_convention (int gcc_p, struct type *type)
{
return (TYPE_NFIELDS (type) > 1 || TYPE_LENGTH (type) > 8);
so we need a single byte breakpoint. Matsushita hasn't defined
one, so we defined it ourselves. */
-unsigned char *
+const static unsigned char *
mn10300_breakpoint_from_pc (CORE_ADDR *bp_addr, int *bp_size)
{
static char breakpoint[] =
static void
fix_frame_pointer (struct frame_info *fi, int stack_size)
{
- if (fi && fi->next == NULL)
+ if (fi && get_next_frame (fi) == NULL)
{
- if (fi->extra_info->status & MY_FRAME_IN_SP)
- fi->frame = read_sp () - stack_size;
- else if (fi->extra_info->status & MY_FRAME_IN_FP)
- fi->frame = read_register (A3_REGNUM);
+ if (get_frame_extra_info (fi)->status & MY_FRAME_IN_SP)
+ deprecated_update_frame_base_hack (fi, read_sp () - stack_size);
+ else if (get_frame_extra_info (fi)->status & MY_FRAME_IN_FP)
+ deprecated_update_frame_base_hack (fi, read_register (A3_REGNUM));
}
}
if (fi == NULL || movm_args == 0)
return;
- if (movm_args & 0x10)
+ if (movm_args & movm_other_bit)
+ {
+ /* The `other' bit leaves a blank area of four bytes at the
+ beginning of its block of saved registers, making it 32 bytes
+ long in total. */
+ deprecated_get_frame_saved_regs (fi)[LAR_REGNUM] = get_frame_base (fi) + offset + 4;
+ deprecated_get_frame_saved_regs (fi)[LIR_REGNUM] = get_frame_base (fi) + offset + 8;
+ deprecated_get_frame_saved_regs (fi)[MDR_REGNUM] = get_frame_base (fi) + offset + 12;
+ deprecated_get_frame_saved_regs (fi)[A0_REGNUM + 1] = get_frame_base (fi) + offset + 16;
+ deprecated_get_frame_saved_regs (fi)[A0_REGNUM] = get_frame_base (fi) + offset + 20;
+ deprecated_get_frame_saved_regs (fi)[D0_REGNUM + 1] = get_frame_base (fi) + offset + 24;
+ deprecated_get_frame_saved_regs (fi)[D0_REGNUM] = get_frame_base (fi) + offset + 28;
+ offset += 32;
+ }
+ if (movm_args & movm_a3_bit)
{
- fi->saved_regs[A3_REGNUM] = fi->frame + offset;
+ deprecated_get_frame_saved_regs (fi)[A3_REGNUM] = get_frame_base (fi) + offset;
offset += 4;
}
- if (movm_args & 0x20)
+ if (movm_args & movm_a2_bit)
{
- fi->saved_regs[A2_REGNUM] = fi->frame + offset;
+ deprecated_get_frame_saved_regs (fi)[A2_REGNUM] = get_frame_base (fi) + offset;
offset += 4;
}
- if (movm_args & 0x40)
+ if (movm_args & movm_d3_bit)
{
- fi->saved_regs[D3_REGNUM] = fi->frame + offset;
+ deprecated_get_frame_saved_regs (fi)[D3_REGNUM] = get_frame_base (fi) + offset;
offset += 4;
}
- if (movm_args & 0x80)
+ if (movm_args & movm_d2_bit)
{
- fi->saved_regs[D2_REGNUM] = fi->frame + offset;
+ deprecated_get_frame_saved_regs (fi)[D2_REGNUM] = get_frame_base (fi) + offset;
offset += 4;
}
- if (AM33_MODE && movm_args & 0x02)
+ if (AM33_MODE)
{
- fi->saved_regs[E0_REGNUM + 5] = fi->frame + offset;
- fi->saved_regs[E0_REGNUM + 4] = fi->frame + offset + 4;
- fi->saved_regs[E0_REGNUM + 3] = fi->frame + offset + 8;
- fi->saved_regs[E0_REGNUM + 2] = fi->frame + offset + 12;
+ if (movm_args & movm_exother_bit)
+ {
+ deprecated_get_frame_saved_regs (fi)[MCVF_REGNUM] = get_frame_base (fi) + offset;
+ deprecated_get_frame_saved_regs (fi)[MCRL_REGNUM] = get_frame_base (fi) + offset + 4;
+ deprecated_get_frame_saved_regs (fi)[MCRH_REGNUM] = get_frame_base (fi) + offset + 8;
+ deprecated_get_frame_saved_regs (fi)[MDRQ_REGNUM] = get_frame_base (fi) + offset + 12;
+ deprecated_get_frame_saved_regs (fi)[E0_REGNUM + 1] = get_frame_base (fi) + offset + 16;
+ deprecated_get_frame_saved_regs (fi)[E0_REGNUM + 0] = get_frame_base (fi) + offset + 20;
+ offset += 24;
+ }
+ if (movm_args & movm_exreg1_bit)
+ {
+ deprecated_get_frame_saved_regs (fi)[E0_REGNUM + 7] = get_frame_base (fi) + offset;
+ deprecated_get_frame_saved_regs (fi)[E0_REGNUM + 6] = get_frame_base (fi) + offset + 4;
+ deprecated_get_frame_saved_regs (fi)[E0_REGNUM + 5] = get_frame_base (fi) + offset + 8;
+ deprecated_get_frame_saved_regs (fi)[E0_REGNUM + 4] = get_frame_base (fi) + offset + 12;
+ offset += 16;
+ }
+ if (movm_args & movm_exreg0_bit)
+ {
+ deprecated_get_frame_saved_regs (fi)[E0_REGNUM + 3] = get_frame_base (fi) + offset;
+ deprecated_get_frame_saved_regs (fi)[E0_REGNUM + 2] = get_frame_base (fi) + offset + 4;
+ offset += 8;
+ }
}
}
/* The main purpose of this file is dealing with prologues to extract
information about stack frames and saved registers.
- For reference here's how prologues look on the mn10300:
+ In gcc/config/mn13000/mn10300.c, the expand_prologue prologue
+ function is pretty readable, and has a nice explanation of how the
+ prologue is generated. The prologues generated by that code will
+ have the following form (NOTE: the current code doesn't handle all
+ this!):
+
+ + If this is an old-style varargs function, then its arguments
+ need to be flushed back to the stack:
+
+ mov d0,(4,sp)
+ mov d1,(4,sp)
+
+ + If we use any of the callee-saved registers, save them now.
+
+ movm [some callee-saved registers],(sp)
+
+ + If we have any floating-point registers to save:
+
+ - Decrement the stack pointer to reserve space for the registers.
+ If the function doesn't need a frame pointer, we may combine
+ this with the adjustment that reserves space for the frame.
+
+ add -SIZE, sp
+
+ - Save the floating-point registers. We have two possible
+ strategies:
+
+ . Save them at fixed offset from the SP:
- With frame pointer:
- movm [d2,d3,a2,a3],sp
- mov sp,a3
- add <size>,sp
+ fmov fsN,(OFFSETN,sp)
+ fmov fsM,(OFFSETM,sp)
+ ...
- Without frame pointer:
- movm [d2,d3,a2,a3],sp (if needed)
- add <size>,sp
+ Note that, if OFFSETN happens to be zero, you'll get the
+ different opcode: fmov fsN,(sp)
+
+ . Or, set a0 to the start of the save area, and then use
+ post-increment addressing to save the FP registers.
+
+ mov sp, a0
+ add SIZE, a0
+ fmov fsN,(a0+)
+ fmov fsM,(a0+)
+ ...
+
+ + If the function needs a frame pointer, we set it here.
+
+ mov sp, a3
+
+ + Now we reserve space for the stack frame proper. This could be
+ merged into the `add -SIZE, sp' instruction for FP saves up
+ above, unless we needed to set the frame pointer in the previous
+ step, or the frame is so large that allocating the whole thing at
+ once would put the FP register save slots out of reach of the
+ addressing mode (128 bytes).
+
+ add -SIZE, sp
One day we might keep the stack pointer constant, that won't
change the code for prologues, but it will make the frame
save instructions.
MY_FRAME_IN_FP: The base of the current frame is in the
- frame pointer register ($a2).
+ frame pointer register ($a3).
NO_MORE_FRAMES: Set this if the current frame is "start" or
if the first instruction looks like mov <imm>,sp. This tells
char *name;
/* Use the PC in the frame if it's provided to look up the
- start of this function. */
- pc = (fi ? fi->pc : pc);
+ start of this function.
+
+ Note: kevinb/2003-07-16: We used to do the following here:
+ pc = (fi ? get_frame_pc (fi) : pc);
+ But this is (now) badly broken when called from analyze_dummy_frame().
+ */
+ pc = (pc ? pc : get_frame_pc (fi));
/* Find the start of this function. */
status = find_pc_partial_function (pc, &name, &func_addr, &func_end);
if (strcmp (name, "start") == 0)
{
if (fi != NULL)
- fi->extra_info->status = NO_MORE_FRAMES;
+ get_frame_extra_info (fi)->status = NO_MORE_FRAMES;
return pc;
}
/* At the start of a function our frame is in the stack pointer. */
if (fi)
- fi->extra_info->status = MY_FRAME_IN_SP;
+ get_frame_extra_info (fi)->status = MY_FRAME_IN_SP;
/* Get the next two bytes into buf, we need two because rets is a two
byte insn and the first isn't enough to uniquely identify it. */
if (status != 0)
return pc;
+#if 0
+ /* Note: kevinb/2003-07-16: We shouldn't be making these sorts of
+ changes to the frame in prologue examination code. */
/* If we're physically on an "rets" instruction, then our frame has
already been deallocated. Note this can also be true for retf
and ret if they specify a size of zero.
In this case fi->frame is bogus, we need to fix it. */
if (fi && buf[0] == 0xf0 && buf[1] == 0xfc)
{
- 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);
}
/* Similarly if we're stopped on the first insn of a prologue as our
frame hasn't been allocated yet. */
- if (fi && fi->pc == func_addr)
+ if (fi && 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);
}
+#endif
/* Figure out where to stop scanning. */
- stop = fi ? fi->pc : func_end;
+ stop = fi ? pc : func_end;
/* Don't walk off the end of the function. */
stop = stop > func_end ? func_end : stop;
return addr;
}
- /* First see if this insn sets the stack pointer; if so, it's something
- we won't understand, so quit now. */
+ /* First see if this insn sets the stack pointer from a register; if
+ so, it's probably the initialization of the stack pointer in _start,
+ so mark this as the bottom-most frame. */
if (buf[0] == 0xf2 && (buf[1] & 0xf3) == 0xf0)
{
if (fi)
- fi->extra_info->status = NO_MORE_FRAMES;
+ get_frame_extra_info (fi)->status = NO_MORE_FRAMES;
return addr;
}
if (addr >= stop)
{
/* Fix fi->frame since it's bogus at this point. */
- if (fi && fi->next == NULL)
- fi->frame = read_sp ();
+ if (fi && get_next_frame (fi) == NULL)
+ deprecated_update_frame_base_hack (fi, read_sp ());
/* Note if/where callee saved registers were saved. */
set_movm_offsets (fi, movm_args);
if (status != 0)
{
/* Fix fi->frame since it's bogus at this point. */
- if (fi && fi->next == NULL)
- fi->frame = read_sp ();
+ if (fi && get_next_frame (fi) == NULL)
+ deprecated_update_frame_base_hack (fi, read_sp ());
/* Note if/where callee saved registers were saved. */
set_movm_offsets (fi, movm_args);
/* The frame pointer is now valid. */
if (fi)
{
- fi->extra_info->status |= MY_FRAME_IN_FP;
- fi->extra_info->status &= ~MY_FRAME_IN_SP;
+ get_frame_extra_info (fi)->status |= MY_FRAME_IN_FP;
+ get_frame_extra_info (fi)->status &= ~MY_FRAME_IN_SP;
}
/* Quit now if we're beyond the stop point. */
/* Note the size of the stack in the frame info structure. */
stack_size = extract_signed_integer (buf, imm_size);
if (fi)
- fi->extra_info->stack_size = stack_size;
+ get_frame_extra_info (fi)->stack_size = stack_size;
/* We just consumed 2 + imm_size bytes. */
addr += 2 + imm_size;
return addr;
}
+
+/* Function: saved_regs_size
+ Return the size in bytes of the register save area, based on the
+ saved_regs array in FI. */
+static int
+saved_regs_size (struct frame_info *fi)
+{
+ int adjust = 0;
+ int i;
+
+ /* Reserve four bytes for every register saved. */
+ for (i = 0; i < NUM_REGS; i++)
+ if (deprecated_get_frame_saved_regs (fi)[i])
+ adjust += 4;
+
+ /* If we saved LIR, then it's most likely we used a `movm'
+ instruction with the `other' bit set, in which case the SP is
+ decremented by an extra four bytes, "to simplify calculation
+ of the transfer area", according to the processor manual. */
+ if (deprecated_get_frame_saved_regs (fi)[LIR_REGNUM])
+ adjust += 4;
+
+ return adjust;
+}
+
+
/* Function: frame_chain
Figure out and return the caller's frame pointer given current
frame_info struct.
We don't handle dummy frames yet but we would probably just return the
stack pointer that was in use at the time the function call was made? */
-CORE_ADDR
+static CORE_ADDR
mn10300_frame_chain (struct frame_info *fi)
{
struct frame_info *dummy;
/* Walk through the prologue to determine the stack size,
location of saved registers, end of the prologue, etc. */
- if (fi->extra_info->status == 0)
+ if (get_frame_extra_info (fi)->status == 0)
mn10300_analyze_prologue (fi, (CORE_ADDR) 0);
/* Quit now if mn10300_analyze_prologue set NO_MORE_FRAMES. */
- 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, determine the frame
/* The easiest way to get that info is to analyze our caller's frame.
So we set up a dummy frame and call mn10300_analyze_prologue to
find stuff for us. */
- 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)
{
/* Our caller has a frame pointer. So find the frame in $a3 or
in the stack. */
- if (fi->saved_regs[A3_REGNUM])
- return (read_memory_integer (fi->saved_regs[A3_REGNUM], REGISTER_SIZE));
+ if (deprecated_get_frame_saved_regs (fi)[A3_REGNUM])
+ return (read_memory_integer (deprecated_get_frame_saved_regs (fi)[A3_REGNUM],
+ DEPRECATED_REGISTER_SIZE));
else
return read_register (A3_REGNUM);
}
else
{
- int adjust = 0;
-
- adjust += (fi->saved_regs[D2_REGNUM] ? 4 : 0);
- adjust += (fi->saved_regs[D3_REGNUM] ? 4 : 0);
- adjust += (fi->saved_regs[A2_REGNUM] ? 4 : 0);
- adjust += (fi->saved_regs[A3_REGNUM] ? 4 : 0);
- if (AM33_MODE)
- {
- adjust += (fi->saved_regs[E0_REGNUM + 5] ? 4 : 0);
- adjust += (fi->saved_regs[E0_REGNUM + 4] ? 4 : 0);
- adjust += (fi->saved_regs[E0_REGNUM + 3] ? 4 : 0);
- adjust += (fi->saved_regs[E0_REGNUM + 2] ? 4 : 0);
- }
+ int adjust = saved_regs_size (fi);
/* Our caller does not have a frame pointer. So his frame starts
at the base of our frame (fi->frame) + register save space
+ <his size>. */
- return fi->frame + adjust + -dummy->extra_info->stack_size;
+ return get_frame_base (fi) + adjust + -get_frame_extra_info (dummy)->stack_size;
}
}
/* Function: skip_prologue
Return the address of the first inst past the prologue of the function. */
-CORE_ADDR
+static CORE_ADDR
mn10300_skip_prologue (CORE_ADDR pc)
{
/* We used to check the debug symbols, but that can lose if
return mn10300_analyze_prologue (NULL, pc);
}
-
-/* Function: pop_frame
- This routine gets called when either the user uses the `return'
- command, or the call dummy breakpoint gets hit. */
-
-void
-mn10300_pop_frame (struct frame_info *frame)
+/* generic_pop_current_frame calls this function if the current
+ frame isn't a dummy frame. */
+static void
+mn10300_pop_frame_regular (struct frame_info *frame)
{
int regnum;
- if (PC_IN_CALL_DUMMY (frame->pc, frame->frame, frame->frame))
- generic_pop_dummy_frame ();
- else
- {
- write_register (PC_REGNUM, FRAME_SAVED_PC (frame));
+ write_register (PC_REGNUM, DEPRECATED_FRAME_SAVED_PC (frame));
- /* Restore any saved registers. */
- for (regnum = 0; regnum < NUM_REGS; regnum++)
- if (frame->saved_regs[regnum] != 0)
- {
- ULONGEST value;
+ /* Restore any saved registers. */
+ for (regnum = 0; regnum < NUM_REGS; regnum++)
+ if (deprecated_get_frame_saved_regs (frame)[regnum] != 0)
+ {
+ ULONGEST value;
- value = read_memory_unsigned_integer (frame->saved_regs[regnum],
- REGISTER_RAW_SIZE (regnum));
- write_register (regnum, value);
- }
+ value = read_memory_unsigned_integer (deprecated_get_frame_saved_regs (frame)[regnum],
+ DEPRECATED_REGISTER_RAW_SIZE (regnum));
+ write_register (regnum, value);
+ }
- /* Actually cut back the stack. */
- write_register (SP_REGNUM, FRAME_FP (frame));
+ /* Actually cut back the stack. */
+ write_register (SP_REGNUM, get_frame_base (frame));
- /* Don't we need to set the PC?!? XXX FIXME. */
- }
+ /* Don't we need to set the PC?!? XXX FIXME. */
+}
+/* Function: pop_frame
+ This routine gets called when either the user uses the `return'
+ command, or the call dummy breakpoint gets hit. */
+static void
+mn10300_pop_frame (void)
+{
+ struct frame_info *frame = get_current_frame ();
+ if (get_frame_type (frame) == DUMMY_FRAME)
+ /* NOTE: cagney/2002-22-23: Does this ever occure? Surely a dummy
+ frame will have already been poped by the "infrun.c" code. */
+ deprecated_pop_dummy_frame ();
+ else
+ mn10300_pop_frame_regular (frame);
/* Throw away any cached frame information. */
flush_cached_frames ();
}
Setup arguments for a call to the target. Arguments go in
order on the stack. */
-CORE_ADDR
+static CORE_ADDR
mn10300_push_arguments (int nargs, struct value **args, CORE_ADDR sp,
int struct_return, CORE_ADDR struct_addr)
{
Set up the return address for the inferior function call.
Needed for targets where we don't actually execute a JSR/BSR instruction */
-CORE_ADDR
+static CORE_ADDR
mn10300_push_return_address (CORE_ADDR pc, CORE_ADDR sp)
{
unsigned char buf[4];
- store_unsigned_integer (buf, 4, CALL_DUMMY_ADDRESS ());
+ store_unsigned_integer (buf, 4, entry_point_address ());
write_memory (sp - 4, buf, 4);
return sp - 4;
}
Store the structure value return address for an inferior function
call. */
-void
+static void
mn10300_store_struct_return (CORE_ADDR addr, CORE_ADDR sp)
{
/* The structure return address is passed as the first argument. */
instead of RP, because that's where "caller" of the dummy-frame
will be found. */
-CORE_ADDR
+static CORE_ADDR
mn10300_frame_saved_pc (struct frame_info *fi)
{
- int adjust = 0;
+ int adjust = saved_regs_size (fi);
- adjust += (fi->saved_regs[D2_REGNUM] ? 4 : 0);
- adjust += (fi->saved_regs[D3_REGNUM] ? 4 : 0);
- adjust += (fi->saved_regs[A2_REGNUM] ? 4 : 0);
- adjust += (fi->saved_regs[A3_REGNUM] ? 4 : 0);
- if (AM33_MODE)
- {
- adjust += (fi->saved_regs[E0_REGNUM + 5] ? 4 : 0);
- adjust += (fi->saved_regs[E0_REGNUM + 4] ? 4 : 0);
- adjust += (fi->saved_regs[E0_REGNUM + 3] ? 4 : 0);
- adjust += (fi->saved_regs[E0_REGNUM + 2] ? 4 : 0);
- }
-
- return (read_memory_integer (fi->frame + adjust, REGISTER_SIZE));
+ return (read_memory_integer (get_frame_base (fi) + adjust,
+ DEPRECATED_REGISTER_SIZE));
}
/* Function: mn10300_init_extra_frame_info
registers. Most of the work is done in mn10300_analyze_prologue().
Note that when we are called for the last frame (currently active frame),
- that fi->pc and fi->frame will already be setup. However, fi->frame will
+ that get_frame_pc (fi) and fi->frame will already be setup. However, fi->frame will
be valid only if this routine uses FP. For previous frames, fi-frame will
always be correct. mn10300_analyze_prologue will fix fi->frame if
it's not valid.
- We can be called with the PC in the call dummy under two circumstances.
- First, during normal backtracing, second, while figuring out the frame
- pointer just prior to calling the target function (see run_stack_dummy). */
+ We can be called with the PC in the call dummy under two
+ circumstances. First, during normal backtracing, second, while
+ figuring out the frame pointer just prior to calling the target
+ function (see call_function_by_hand). */
-void
+static void
mn10300_init_extra_frame_info (int fromleaf, struct frame_info *fi)
{
- if (fi->next)
- fi->pc = FRAME_SAVED_PC (fi->next);
+ if (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));
+ frame_extra_info_zalloc (fi, sizeof (struct frame_extra_info));
- fi->extra_info->status = 0;
- fi->extra_info->stack_size = 0;
+ get_frame_extra_info (fi)->status = 0;
+ get_frame_extra_info (fi)->stack_size = 0;
mn10300_analyze_prologue (fi, 0);
}
/* This function's job is handled by init_extra_frame_info. */
-void
+static void
mn10300_frame_init_saved_regs (struct frame_info *frame)
{
}
plus any necessary offset to be applied to the register before
any frame pointer offsets. */
-void
-mn10300_virtual_frame_pointer (CORE_ADDR pc, long *reg, long *offset)
+static void
+mn10300_virtual_frame_pointer (CORE_ADDR pc,
+ int *reg,
+ LONGEST *offset)
{
struct frame_info *dummy = analyze_dummy_frame (pc, 0);
/* Set up a dummy frame_info, Analyze the prolog and fill in the
extra info. */
/* Results will tell us which type of frame it uses. */
- if (dummy->extra_info->status & MY_FRAME_IN_SP)
+ if (get_frame_extra_info (dummy)->status & MY_FRAME_IN_SP)
{
*reg = SP_REGNUM;
- *offset = -(dummy->extra_info->stack_size);
+ *offset = -(get_frame_extra_info (dummy)->stack_size);
}
else
{
return 4;
}
+/* If DWARF2 is a register number appearing in Dwarf2 debug info, then
+ mn10300_dwarf2_reg_to_regnum (DWARF2) is the corresponding GDB
+ register number. Why don't Dwarf2 and GDB use the same numbering?
+ Who knows? But since people have object files lying around with
+ the existing Dwarf2 numbering, and other people have written stubs
+ to work with the existing GDB, neither of them can change. So we
+ just have to cope. */
+static int
+mn10300_dwarf2_reg_to_regnum (int dwarf2)
+{
+ /* This table is supposed to be shaped like the REGISTER_NAMES
+ initializer in gcc/config/mn10300/mn10300.h. Registers which
+ appear in GCC's numbering, but have no counterpart in GDB's
+ world, are marked with a -1. */
+ static int dwarf2_to_gdb[] = {
+ 0, 1, 2, 3, 4, 5, 6, 7, -1, 8,
+ 15, 16, 17, 18, 19, 20, 21, 22
+ };
+ int gdb;
+
+ if (dwarf2 < 0
+ || dwarf2 >= (sizeof (dwarf2_to_gdb) / sizeof (dwarf2_to_gdb[0]))
+ || dwarf2_to_gdb[dwarf2] == -1)
+ internal_error (__FILE__, __LINE__,
+ "bogus register number in debug info: %d", dwarf2);
+
+ return dwarf2_to_gdb[dwarf2];
+}
+
static void
mn10300_print_register (const char *name, int regnum, int reg_width)
{
- char *raw_buffer = alloca (MAX_REGISTER_RAW_SIZE);
+ char raw_buffer[MAX_REGISTER_SIZE];
if (reg_width)
printf_filtered ("%*s: ", reg_width, name);
printf_filtered ("%s: ", name);
/* Get the data */
- if (read_relative_register_raw_bytes (regnum, raw_buffer))
+ if (!frame_register_read (deprecated_selected_frame, regnum, raw_buffer))
{
printf_filtered ("[invalid]");
return;
else
{
int byte;
- if (TARGET_BYTE_ORDER == BIG_ENDIAN)
+ if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG)
{
- for (byte = REGISTER_RAW_SIZE (regnum) - REGISTER_VIRTUAL_SIZE (regnum);
- byte < REGISTER_RAW_SIZE (regnum);
+ for (byte = DEPRECATED_REGISTER_RAW_SIZE (regnum) - DEPRECATED_REGISTER_VIRTUAL_SIZE (regnum);
+ byte < DEPRECATED_REGISTER_RAW_SIZE (regnum);
byte++)
printf_filtered ("%02x", (unsigned char) raw_buffer[byte]);
}
else
{
- for (byte = REGISTER_VIRTUAL_SIZE (regnum) - 1;
+ for (byte = DEPRECATED_REGISTER_VIRTUAL_SIZE (regnum) - 1;
byte >= 0;
byte--)
printf_filtered ("%02x", (unsigned char) raw_buffer[byte]);
}
}
+static CORE_ADDR
+mn10300_read_fp (void)
+{
+ /* That's right, we're using the stack pointer as our frame pointer. */
+ gdb_assert (SP_REGNUM >= 0);
+ return read_register (SP_REGNUM);
+}
+
/* Dump out the mn10300 speciic architecture information. */
static void
return NULL; /* keep GCC happy. */
}
- set_gdbarch_register_size (gdbarch, 4);
- set_gdbarch_max_register_raw_size (gdbarch, 4);
- set_gdbarch_register_virtual_type (gdbarch, mn10300_register_virtual_type);
- set_gdbarch_register_byte (gdbarch, mn10300_register_byte);
- set_gdbarch_register_virtual_size (gdbarch, mn10300_register_virtual_size);
- set_gdbarch_register_raw_size (gdbarch, mn10300_register_raw_size);
- set_gdbarch_call_dummy_p (gdbarch, 1);
- set_gdbarch_register_name (gdbarch, register_name);
- set_gdbarch_use_generic_dummy_frames (gdbarch, 1);
- set_gdbarch_call_dummy_breakpoint_offset_p (gdbarch, 0);
- set_gdbarch_call_dummy_stack_adjust_p (gdbarch, 0);
- set_gdbarch_get_saved_register (gdbarch, generic_get_saved_register);
- set_gdbarch_push_arguments (gdbarch, mn10300_push_arguments);
- set_gdbarch_push_return_address (gdbarch, mn10300_push_return_address);
- set_gdbarch_frame_chain_valid (gdbarch, generic_file_frame_chain_valid);
- set_gdbarch_reg_struct_has_addr (gdbarch, mn10300_reg_struct_has_addr);
- set_gdbarch_save_dummy_frame_tos (gdbarch, generic_save_dummy_frame_tos);
+ /* Registers. */
set_gdbarch_num_regs (gdbarch, num_regs);
- set_gdbarch_do_registers_info (gdbarch, mn10300_do_registers_info);
-
- set_gdbarch_fp_regnum (gdbarch, 31);
- set_gdbarch_max_register_virtual_size (gdbarch, 4);
- set_gdbarch_register_bytes (gdbarch,
- num_regs * gdbarch_register_size (gdbarch));
+ set_gdbarch_register_name (gdbarch, register_name);
+ set_gdbarch_deprecated_register_size (gdbarch, 4);
+ set_gdbarch_deprecated_register_bytes (gdbarch, num_regs * gdbarch_deprecated_register_size (gdbarch));
+ set_gdbarch_deprecated_max_register_raw_size (gdbarch, 4);
+ set_gdbarch_deprecated_register_raw_size (gdbarch, mn10300_register_raw_size);
+ set_gdbarch_deprecated_register_byte (gdbarch, mn10300_register_byte);
+ set_gdbarch_deprecated_max_register_virtual_size (gdbarch, 4);
+ set_gdbarch_deprecated_register_virtual_size (gdbarch, mn10300_register_virtual_size);
+ set_gdbarch_deprecated_register_virtual_type (gdbarch, mn10300_register_virtual_type);
+ set_gdbarch_dwarf2_reg_to_regnum (gdbarch, mn10300_dwarf2_reg_to_regnum);
+ set_gdbarch_deprecated_do_registers_info (gdbarch, mn10300_do_registers_info);
+ set_gdbarch_sp_regnum (gdbarch, 8);
+ set_gdbarch_pc_regnum (gdbarch, 9);
+ set_gdbarch_deprecated_fp_regnum (gdbarch, 31);
+ set_gdbarch_virtual_frame_pointer (gdbarch, mn10300_virtual_frame_pointer);
+
+ /* Breakpoints. */
set_gdbarch_breakpoint_from_pc (gdbarch, mn10300_breakpoint_from_pc);
- set_gdbarch_function_start_offset (gdbarch, 0);
- set_gdbarch_decr_pc_after_break (gdbarch, 0);
+
+ /* Stack unwinding. */
set_gdbarch_inner_than (gdbarch, core_addr_lessthan);
- set_gdbarch_frame_chain_valid (gdbarch, generic_file_frame_chain_valid);
- set_gdbarch_saved_pc_after_call (gdbarch, mn10300_saved_pc_after_call);
- set_gdbarch_init_extra_frame_info (gdbarch, mn10300_init_extra_frame_info);
- set_gdbarch_frame_init_saved_regs (gdbarch, mn10300_frame_init_saved_regs);
- set_gdbarch_frame_chain (gdbarch, mn10300_frame_chain);
- set_gdbarch_frame_saved_pc (gdbarch, mn10300_frame_saved_pc);
- set_gdbarch_extract_return_value (gdbarch, mn10300_extract_return_value);
- set_gdbarch_extract_struct_value_address
- (gdbarch, mn10300_extract_struct_value_address);
- set_gdbarch_store_return_value (gdbarch, mn10300_store_return_value);
- set_gdbarch_store_struct_return (gdbarch, mn10300_store_struct_return);
+ set_gdbarch_deprecated_saved_pc_after_call (gdbarch, mn10300_saved_pc_after_call);
+ set_gdbarch_deprecated_init_extra_frame_info (gdbarch, mn10300_init_extra_frame_info);
+ set_gdbarch_deprecated_frame_init_saved_regs (gdbarch, mn10300_frame_init_saved_regs);
+ set_gdbarch_deprecated_frame_chain (gdbarch, mn10300_frame_chain);
+ set_gdbarch_deprecated_frame_saved_pc (gdbarch, mn10300_frame_saved_pc);
+ set_gdbarch_deprecated_extract_return_value (gdbarch, mn10300_extract_return_value);
+ set_gdbarch_deprecated_store_return_value (gdbarch, mn10300_store_return_value);
+ set_gdbarch_deprecated_store_struct_return (gdbarch, mn10300_store_struct_return);
+ set_gdbarch_deprecated_pop_frame (gdbarch, mn10300_pop_frame);
set_gdbarch_skip_prologue (gdbarch, mn10300_skip_prologue);
- set_gdbarch_frame_args_skip (gdbarch, 0);
- set_gdbarch_frame_args_address (gdbarch, default_frame_address);
- set_gdbarch_frame_locals_address (gdbarch, default_frame_address);
- set_gdbarch_frame_num_args (gdbarch, frame_num_args_unknown);
/* That's right, we're using the stack pointer as our frame pointer. */
- set_gdbarch_read_fp (gdbarch, generic_target_read_sp);
- set_gdbarch_call_dummy_location (gdbarch, AT_ENTRY_POINT);
- set_gdbarch_call_dummy_address (gdbarch, entry_point_address);
- set_gdbarch_call_dummy_words (gdbarch, mn10300_call_dummy_words);
- set_gdbarch_sizeof_call_dummy_words (gdbarch,
- sizeof (mn10300_call_dummy_words));
- set_gdbarch_call_dummy_length (gdbarch, 0);
- set_gdbarch_fix_call_dummy (gdbarch, generic_fix_call_dummy);
- set_gdbarch_call_dummy_start_offset (gdbarch, 0);
- set_gdbarch_pc_in_call_dummy (gdbarch, generic_pc_in_call_dummy);
- set_gdbarch_push_dummy_frame (gdbarch, generic_push_dummy_frame);
+ set_gdbarch_deprecated_target_read_fp (gdbarch, mn10300_read_fp);
+
+ /* Calling functions in the inferior from GDB. */
+ set_gdbarch_deprecated_call_dummy_words (gdbarch, mn10300_call_dummy_words);
+ set_gdbarch_deprecated_sizeof_call_dummy_words (gdbarch, sizeof (mn10300_call_dummy_words));
+ set_gdbarch_deprecated_push_arguments (gdbarch, mn10300_push_arguments);
+ set_gdbarch_deprecated_reg_struct_has_addr
+ (gdbarch, mn10300_reg_struct_has_addr);
+ set_gdbarch_deprecated_push_return_address (gdbarch, mn10300_push_return_address);
+ set_gdbarch_deprecated_save_dummy_frame_tos (gdbarch, generic_save_dummy_frame_tos);
set_gdbarch_use_struct_convention (gdbarch, mn10300_use_struct_convention);
tdep->am33_mode = am33_mode;
+ /* Should be using push_dummy_call. */
+ set_gdbarch_deprecated_dummy_write_sp (gdbarch, deprecated_write_sp);
+
+ set_gdbarch_print_insn (gdbarch, print_insn_mn10300);
+
return gdbarch;
}
_initialize_mn10300_tdep (void)
{
/* printf("_initialize_mn10300_tdep\n"); */
-
- tm_print_insn = print_insn_mn10300;
-
- register_gdbarch_init (bfd_arch_mn10300, mn10300_gdbarch_init);
+ gdbarch_register (bfd_arch_mn10300, mn10300_gdbarch_init, mn10300_dump_tdep);
}
projects / deliverable / binutils-gdb.git / blobdiff