/* Target-dependent code for Mitsubishi D10V, for GDB.
- Copyright 1996, 1997, 1998, 1999, 2000, 2001
- Free Software Foundation, Inc.
+
+ Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002 Free Software
+ Foundation, Inc.
This file is part of GDB.
#include "defs.h"
#include "frame.h"
-#include "obstack.h"
#include "symtab.h"
#include "gdbtypes.h"
#include "gdbcmd.h"
#include "regcache.h"
#include "floatformat.h"
-#include "sim-d10v.h"
-
-#undef XMALLOC
-#define XMALLOC(TYPE) ((TYPE*) xmalloc (sizeof (TYPE)))
+#include "gdb/sim-d10v.h"
+#include "sim-regno.h"
struct frame_extra_info
{
/* These are the addresses the D10V-EVA board maps data and
instruction memory to. */
-#define DMEM_START 0x2000000
-#define IMEM_START 0x1000000
-#define STACK_START 0x0007ffe
+enum memspace {
+ DMEM_START = 0x2000000,
+ IMEM_START = 0x1000000,
+ STACK_START = 0x200bffe
+};
/* d10v register names. */
enum
{
R0_REGNUM = 0,
+ R3_REGNUM = 3,
+ _FP_REGNUM = 11,
LR_REGNUM = 13,
+ _SP_REGNUM = 15,
PSW_REGNUM = 16,
+ _PC_REGNUM = 18,
NR_IMAP_REGS = 2,
- NR_A_REGS = 2
+ NR_A_REGS = 2,
+ TS2_NUM_REGS = 37,
+ TS3_NUM_REGS = 42,
+ /* d10v calling convention. */
+ ARG1_REGNUM = R0_REGNUM,
+ ARGN_REGNUM = R3_REGNUM,
+ RET1_REGNUM = R0_REGNUM,
};
+
#define NR_DMAP_REGS (gdbarch_tdep (current_gdbarch)->nr_dmap_regs)
#define A0_REGNUM (gdbarch_tdep (current_gdbarch)->a0_regnum)
-/* d10v calling convention. */
-
-#define ARG1_REGNUM R0_REGNUM
-#define ARGN_REGNUM 3
-#define RET1_REGNUM R0_REGNUM
-
/* Local functions */
extern void _initialize_d10v_tdep (void);
+static CORE_ADDR d10v_read_sp (void);
+
+static CORE_ADDR d10v_read_fp (void);
+
static void d10v_eva_prepare_to_trace (void);
static void d10v_eva_get_trace_data (void);
static int
d10v_frame_chain_valid (CORE_ADDR chain, struct frame_info *frame)
{
- return ((chain) != 0 && (frame) != 0 && (frame)->pc > IMEM_START);
+ if (chain != 0 && frame != NULL)
+ {
+ if (PC_IN_CALL_DUMMY (frame->pc, frame->frame, frame->frame))
+ return 1; /* Path back from a call dummy must be valid. */
+ return ((frame)->pc > IMEM_START
+ && !inside_main_func (frame->pc));
+ }
+ else return 0;
}
static CORE_ADDR
static int
d10v_use_struct_convention (int gcc_p, struct type *type)
{
- return (TYPE_LENGTH (type) > 8);
+ long alignment;
+ int i;
+ /* The d10v only passes a struct in a register when that structure
+ has an alignment that matches the size of a register. */
+ /* If the structure doesn't fit in 4 registers, put it on the
+ stack. */
+ if (TYPE_LENGTH (type) > 8)
+ return 1;
+ /* If the struct contains only one field, don't put it on the stack
+ - gcc can fit it in one or more registers. */
+ if (TYPE_NFIELDS (type) == 1)
+ return 0;
+ alignment = TYPE_LENGTH (TYPE_FIELD_TYPE (type, 0));
+ for (i = 1; i < TYPE_NFIELDS (type); i++)
+ {
+ /* If the alignment changes, just assume it goes on the
+ stack. */
+ if (TYPE_LENGTH (TYPE_FIELD_TYPE (type, i)) != alignment)
+ return 1;
+ }
+ /* If the alignment is suitable for the d10v's 16 bit registers,
+ don't put it on the stack. */
+ if (alignment == 2 || alignment == 4)
+ return 0;
+ return 1;
}
-static unsigned char *
+static const unsigned char *
d10v_breakpoint_from_pc (CORE_ADDR *pcptr, int *lenptr)
{
static unsigned char breakpoint[] =
TS2_A0_REGNUM = 35
};
-static char *
+static const char *
d10v_ts2_register_name (int reg_nr)
{
static char *register_names[] =
TS3_A0_REGNUM = 32
};
-static char *
+static const char *
d10v_ts3_register_name (int reg_nr)
{
static char *register_names[] =
static int
d10v_ts2_register_sim_regno (int nr)
{
+ if (legacy_register_sim_regno (nr) < 0)
+ return legacy_register_sim_regno (nr);
if (nr >= TS2_IMAP0_REGNUM
&& nr < TS2_IMAP0_REGNUM + NR_IMAP_REGS)
return nr - TS2_IMAP0_REGNUM + SIM_D10V_IMAP0_REGNUM;
static int
d10v_ts3_register_sim_regno (int nr)
{
+ if (legacy_register_sim_regno (nr) < 0)
+ return legacy_register_sim_regno (nr);
if (nr >= TS3_IMAP0_REGNUM
&& nr < TS3_IMAP0_REGNUM + NR_IMAP_REGS)
return nr - TS3_IMAP0_REGNUM + SIM_D10V_IMAP0_REGNUM;
return 2;
}
-/* Number of bytes of storage in the program's representation
- for register N. */
-
-static int
-d10v_register_virtual_size (int reg_nr)
-{
- return TYPE_LENGTH (REGISTER_VIRTUAL_TYPE (reg_nr));
-}
-
/* Return the GDB type object for the "standard" data type
of data in register N. */
{
if (reg_nr == PC_REGNUM)
return builtin_type_void_func_ptr;
+ if (reg_nr == _SP_REGNUM || reg_nr == _FP_REGNUM)
+ return builtin_type_void_data_ptr;
else if (reg_nr >= A0_REGNUM
&& reg_nr < (A0_REGNUM + NR_A_REGS))
return builtin_type_int64;
return builtin_type_int16;
}
-static CORE_ADDR
-d10v_make_daddr (CORE_ADDR x)
-{
- return ((x) | DMEM_START);
-}
-
-static CORE_ADDR
-d10v_make_iaddr (CORE_ADDR x)
-{
- return (((x) << 2) | IMEM_START);
-}
-
static int
d10v_daddr_p (CORE_ADDR x)
{
return (((x) & 0x3000000) == IMEM_START);
}
+static CORE_ADDR
+d10v_make_daddr (CORE_ADDR x)
+{
+ return ((x) | DMEM_START);
+}
+
+static CORE_ADDR
+d10v_make_iaddr (CORE_ADDR x)
+{
+ if (d10v_iaddr_p (x))
+ return x; /* Idempotency -- x is already in the IMEM space. */
+ else
+ return (((x) << 2) | IMEM_START);
+}
static CORE_ADDR
d10v_convert_iaddr_to_raw (CORE_ADDR x)
if (TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_FUNC
|| TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_METHOD)
{
-#if 0
- if (! d10v_iaddr_p (addr))
- {
- warning_begin ();
- fprintf_unfiltered (gdb_stderr, "address `");
- print_address_numeric (addr, 1, gdb_stderr);
- fprintf_unfiltered (gdb_stderr, "' is not a code address\n");
- }
-#endif
-
store_unsigned_integer (buf, TYPE_LENGTH (type),
d10v_convert_iaddr_to_raw (addr));
}
/* Is it a code address? */
if (TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_FUNC
- || TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_METHOD)
+ || TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_METHOD
+ || TYPE_CODE_SPACE (TYPE_TARGET_TYPE (type)))
return d10v_make_iaddr (addr);
else
return d10v_make_daddr (addr);
}
+/* Don't do anything if we have an integer, this way users can type 'x
+ <addr>' w/o having gdb outsmart them. The internal gdb conversions
+ to the correct space are taken care of in the pointer_to_address
+ function. If we don't do this, 'x $fp' wouldn't work. */
+static CORE_ADDR
+d10v_integer_to_address (struct type *type, void *buf)
+{
+ LONGEST val;
+ val = unpack_long (type, buf);
+ return val;
+}
/* Store the address of the place in which to copy the structure the
subroutine will return. This is called from call_function.
static void
d10v_store_return_value (struct type *type, char *valbuf)
{
- write_register_bytes (REGISTER_BYTE (RET1_REGNUM),
- valbuf,
- TYPE_LENGTH (type));
+ char tmp = 0;
+ /* Only char return values need to be shifted right within R0. */
+ if (TYPE_LENGTH (type) == 1
+ && TYPE_CODE (type) == TYPE_CODE_INT)
+ {
+ write_register_bytes (REGISTER_BYTE (RET1_REGNUM),
+ &tmp, 1); /* zero the high byte */
+ write_register_bytes (REGISTER_BYTE (RET1_REGNUM) + 1,
+ valbuf, 1); /* copy the low byte */
+ }
+ else
+ write_register_bytes (REGISTER_BYTE (RET1_REGNUM),
+ valbuf,
+ TYPE_LENGTH (type));
}
/* Extract from an array REGBUF containing the (raw) register state
static CORE_ADDR
d10v_frame_saved_pc (struct frame_info *frame)
{
- return ((frame)->extra_info->return_pc);
+ if (PC_IN_CALL_DUMMY (frame->pc, frame->frame, frame->frame))
+ return d10v_make_iaddr (generic_read_register_dummy (frame->pc,
+ frame->frame,
+ PC_REGNUM));
+ else
+ return ((frame)->extra_info->return_pc);
}
/* Immediately after a function call, return the saved pc. We can't
static CORE_ADDR
d10v_frame_chain (struct frame_info *fi)
{
+ CORE_ADDR addr;
+
+ /* A generic call dummy's frame is the same as caller's. */
+ if (PC_IN_CALL_DUMMY (fi->pc, fi->frame, fi->frame))
+ return fi->frame;
+
d10v_frame_init_saved_regs (fi);
+
if (fi->extra_info->return_pc == IMEM_START
|| inside_entry_file (fi->extra_info->return_pc))
- return (CORE_ADDR) 0;
+ {
+ /* This is meant to halt the backtrace at "_start".
+ Make sure we don't halt it at a generic dummy frame. */
+ if (!PC_IN_CALL_DUMMY (fi->extra_info->return_pc, 0, 0))
+ return (CORE_ADDR) 0;
+ }
if (!fi->saved_regs[FP_REGNUM])
{
return fi->saved_regs[SP_REGNUM];
}
- if (!read_memory_unsigned_integer (fi->saved_regs[FP_REGNUM],
- REGISTER_RAW_SIZE (FP_REGNUM)))
+ addr = read_memory_unsigned_integer (fi->saved_regs[FP_REGNUM],
+ REGISTER_RAW_SIZE (FP_REGNUM));
+ if (addr == 0)
return (CORE_ADDR) 0;
- return d10v_make_daddr (read_memory_unsigned_integer (fi->saved_regs[FP_REGNUM],
- REGISTER_RAW_SIZE (FP_REGNUM)));
+ return d10v_make_daddr (addr);
}
static int next_addr, uses_frame;
op1 = (op & 0x3FFF8000) >> 15;
op2 = op & 0x7FFF;
}
- if (!prologue_find_regs (op1, fi, pc) || !prologue_find_regs (op2, fi, pc))
+ if (!prologue_find_regs (op1, fi, pc)
+ || !prologue_find_regs (op2, fi, pc))
break;
}
pc += 4;
fi->extra_info->size = -next_addr;
if (!(fp & 0xffff))
- fp = d10v_make_daddr (read_register (SP_REGNUM));
+ fp = d10v_read_sp ();
for (i = 0; i < NUM_REGS - 1; i++)
if (fi->saved_regs[i])
if (fi->saved_regs[LR_REGNUM])
{
- CORE_ADDR return_pc = read_memory_unsigned_integer (fi->saved_regs[LR_REGNUM], REGISTER_RAW_SIZE (LR_REGNUM));
+ CORE_ADDR return_pc
+ = read_memory_unsigned_integer (fi->saved_regs[LR_REGNUM],
+ REGISTER_RAW_SIZE (LR_REGNUM));
fi->extra_info->return_pc = d10v_make_iaddr (return_pc);
}
else
fi->extra_info->return_pc = d10v_make_iaddr (read_register (LR_REGNUM));
}
- /* th SP is not normally (ever?) saved, but check anyway */
+ /* The SP is not normally (ever?) saved, but check anyway */
if (!fi->saved_regs[SP_REGNUM])
{
/* if the FP was saved, that means the current FP is valid, */
/* otherwise, it isn't being used, so we use the SP instead */
if (uses_frame)
- fi->saved_regs[SP_REGNUM] = read_register (FP_REGNUM) + fi->extra_info->size;
+ fi->saved_regs[SP_REGNUM]
+ = d10v_read_fp () + fi->extra_info->size;
else
{
fi->saved_regs[SP_REGNUM] = fp + fi->extra_info->size;
fi->extra_info->size = 0;
fi->extra_info->return_pc = 0;
+ /* If fi->pc is zero, but this is not the outermost frame,
+ then let's snatch the return_pc from the callee, so that
+ PC_IN_CALL_DUMMY will work. */
+ if (fi->pc == 0 && fi->level != 0 && fi->next != NULL)
+ fi->pc = d10v_frame_saved_pc (fi->next);
+
/* The call dummy doesn't save any registers on the stack, so we can
return now. */
if (PC_IN_CALL_DUMMY (fi->pc, fi->frame, fi->frame))
write_register (SP_REGNUM, d10v_convert_daddr_to_raw (val));
}
-static void
-d10v_write_fp (CORE_ADDR val)
-{
- write_register (FP_REGNUM, d10v_convert_daddr_to_raw (val));
-}
-
static CORE_ADDR
d10v_read_fp (void)
{
int i;
int regnum = ARG1_REGNUM;
struct stack_item *si = NULL;
+ long val;
+
+ /* If struct_return is true, then the struct return address will
+ consume one argument-passing register. No need to actually
+ write the value to the register -- that's done by
+ d10v_store_struct_return(). */
+
+ if (struct_return)
+ regnum++;
/* Fill in registers and arg lists */
for (i = 0; i < nargs; i++)
struct type *type = check_typedef (VALUE_TYPE (arg));
char *contents = VALUE_CONTENTS (arg);
int len = TYPE_LENGTH (type);
- /* printf ("push: type=%d len=%d\n", type->code, len); */
+ int aligned_regnum = (regnum + 1) & ~1;
+
+ /* printf ("push: type=%d len=%d\n", TYPE_CODE (type), len); */
+ if (len <= 2 && regnum <= ARGN_REGNUM)
+ /* fits in a single register, do not align */
{
- int aligned_regnum = (regnum + 1) & ~1;
- if (len <= 2 && regnum <= ARGN_REGNUM)
- /* fits in a single register, do not align */
+ val = extract_unsigned_integer (contents, len);
+ write_register (regnum++, val);
+ }
+ else if (len <= (ARGN_REGNUM - aligned_regnum + 1) * 2)
+ /* value fits in remaining registers, store keeping left
+ aligned */
+ {
+ int b;
+ regnum = aligned_regnum;
+ for (b = 0; b < (len & ~1); b += 2)
{
- long val = extract_unsigned_integer (contents, len);
+ val = extract_unsigned_integer (&contents[b], 2);
write_register (regnum++, val);
}
- else if (len <= (ARGN_REGNUM - aligned_regnum + 1) * 2)
- /* value fits in remaining registers, store keeping left
- aligned */
+ if (b < len)
{
- int b;
- regnum = aligned_regnum;
- for (b = 0; b < (len & ~1); b += 2)
- {
- long val = extract_unsigned_integer (&contents[b], 2);
- write_register (regnum++, val);
- }
- if (b < len)
- {
- long val = extract_unsigned_integer (&contents[b], 1);
- write_register (regnum++, (val << 8));
- }
- }
- else
- {
- /* arg will go onto stack */
- regnum = ARGN_REGNUM + 1;
- si = push_stack_item (si, contents, len);
+ val = extract_unsigned_integer (&contents[b], 1);
+ write_register (regnum++, (val << 8));
}
}
+ else
+ {
+ /* arg will go onto stack */
+ regnum = ARGN_REGNUM + 1;
+ si = push_stack_item (si, contents, len);
+ }
}
while (si)
char *valbuf)
{
int len;
- /* printf("RET: TYPE=%d len=%d r%d=0x%x\n",type->code, TYPE_LENGTH (type), RET1_REGNUM - R0_REGNUM, (int) extract_unsigned_integer (regbuf + REGISTER_BYTE(RET1_REGNUM), REGISTER_RAW_SIZE (RET1_REGNUM))); */
+#if 0
+ printf("RET: TYPE=%d len=%d r%d=0x%x\n", TYPE_CODE (type),
+ TYPE_LENGTH (type), RET1_REGNUM - R0_REGNUM,
+ (int) extract_unsigned_integer (regbuf + REGISTER_BYTE(RET1_REGNUM),
+ REGISTER_RAW_SIZE (RET1_REGNUM)));
+#endif
+ len = TYPE_LENGTH (type);
+ if (len == 1)
{
- len = TYPE_LENGTH (type);
- if (len == 1)
- {
- unsigned short c = extract_unsigned_integer (regbuf + REGISTER_BYTE (RET1_REGNUM), REGISTER_RAW_SIZE (RET1_REGNUM));
- store_unsigned_integer (valbuf, 1, c);
- }
- else if ((len & 1) == 0)
- memcpy (valbuf, regbuf + REGISTER_BYTE (RET1_REGNUM), len);
- else
- {
- /* For return values of odd size, the first byte is in the
- least significant part of the first register. The
- remaining bytes in remaining registers. Interestingly,
- when such values are passed in, the last byte is in the
- most significant byte of that same register - wierd. */
- memcpy (valbuf, regbuf + REGISTER_BYTE (RET1_REGNUM) + 1, len);
- }
+ unsigned short c;
+
+ c = extract_unsigned_integer (regbuf + REGISTER_BYTE (RET1_REGNUM),
+ REGISTER_RAW_SIZE (RET1_REGNUM));
+ store_unsigned_integer (valbuf, 1, c);
+ }
+ else if ((len & 1) == 0)
+ memcpy (valbuf, regbuf + REGISTER_BYTE (RET1_REGNUM), len);
+ else
+ {
+ /* For return values of odd size, the first byte is in the
+ least significant part of the first register. The
+ remaining bytes in remaining registers. Interestingly,
+ when such values are passed in, the last byte is in the
+ most significant byte of that same register - wierd. */
+ memcpy (valbuf, regbuf + REGISTER_BYTE (RET1_REGNUM) + 1, len);
}
}
internal_error (__FILE__, __LINE__,
"print_insn: no disassembler");
- if (TARGET_BYTE_ORDER == BIG_ENDIAN)
+ if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG)
tm_print_insn_info.endian = BFD_ENDIAN_BIG;
else
tm_print_insn_info.endian = BFD_ENDIAN_LITTLE;
- return (*tm_print_insn) (memaddr, &tm_print_insn_info);
+ return TARGET_PRINT_INSN (memaddr, &tm_print_insn_info);
}
static void
set_gdbarch_read_pc (gdbarch, d10v_read_pc);
set_gdbarch_write_pc (gdbarch, d10v_write_pc);
set_gdbarch_read_fp (gdbarch, d10v_read_fp);
- set_gdbarch_write_fp (gdbarch, d10v_write_fp);
set_gdbarch_read_sp (gdbarch, d10v_read_sp);
set_gdbarch_write_sp (gdbarch, d10v_write_sp);
set_gdbarch_register_byte (gdbarch, d10v_register_byte);
set_gdbarch_register_raw_size (gdbarch, d10v_register_raw_size);
set_gdbarch_max_register_raw_size (gdbarch, 8);
- set_gdbarch_register_virtual_size (gdbarch, d10v_register_virtual_size);
+ set_gdbarch_register_virtual_size (gdbarch, generic_register_size);
set_gdbarch_max_register_virtual_size (gdbarch, 8);
set_gdbarch_register_virtual_type (gdbarch, d10v_register_virtual_type);
set_gdbarch_addr_bit (gdbarch, 32);
set_gdbarch_address_to_pointer (gdbarch, d10v_address_to_pointer);
set_gdbarch_pointer_to_address (gdbarch, d10v_pointer_to_address);
+ set_gdbarch_integer_to_address (gdbarch, d10v_integer_to_address);
set_gdbarch_short_bit (gdbarch, 2 * TARGET_CHAR_BIT);
set_gdbarch_int_bit (gdbarch, 2 * TARGET_CHAR_BIT);
set_gdbarch_long_bit (gdbarch, 4 * TARGET_CHAR_BIT);
- set_gdbarch_long_long_bit (gdbarch, 4 * TARGET_CHAR_BIT);
+ set_gdbarch_long_long_bit (gdbarch, 8 * TARGET_CHAR_BIT);
/* NOTE: The d10v as a 32 bit ``float'' and ``double''. ``long
double'' is 64 bits. */
set_gdbarch_float_bit (gdbarch, 4 * TARGET_CHAR_BIT);
set_gdbarch_long_double_bit (gdbarch, 8 * TARGET_CHAR_BIT);
switch (info.byte_order)
{
- case BIG_ENDIAN:
+ case BFD_ENDIAN_BIG:
set_gdbarch_float_format (gdbarch, &floatformat_ieee_single_big);
set_gdbarch_double_format (gdbarch, &floatformat_ieee_single_big);
set_gdbarch_long_double_format (gdbarch, &floatformat_ieee_double_big);
break;
- case LITTLE_ENDIAN:
+ case BFD_ENDIAN_LITTLE:
set_gdbarch_float_format (gdbarch, &floatformat_ieee_single_little);
set_gdbarch_double_format (gdbarch, &floatformat_ieee_single_little);
set_gdbarch_long_double_format (gdbarch, &floatformat_ieee_double_little);
set_gdbarch_sizeof_call_dummy_words (gdbarch, sizeof (d10v_call_dummy_words));
set_gdbarch_call_dummy_p (gdbarch, 1);
set_gdbarch_call_dummy_stack_adjust_p (gdbarch, 0);
- set_gdbarch_get_saved_register (gdbarch, generic_get_saved_register);
+ set_gdbarch_get_saved_register (gdbarch, generic_unwind_get_saved_register);
set_gdbarch_fix_call_dummy (gdbarch, generic_fix_call_dummy);
- set_gdbarch_extract_return_value (gdbarch, d10v_extract_return_value);
+ set_gdbarch_deprecated_extract_return_value (gdbarch, d10v_extract_return_value);
set_gdbarch_push_arguments (gdbarch, d10v_push_arguments);
set_gdbarch_push_dummy_frame (gdbarch, generic_push_dummy_frame);
set_gdbarch_push_return_address (gdbarch, d10v_push_return_address);
set_gdbarch_store_struct_return (gdbarch, d10v_store_struct_return);
set_gdbarch_store_return_value (gdbarch, d10v_store_return_value);
- set_gdbarch_extract_struct_value_address (gdbarch, d10v_extract_struct_value_address);
+ set_gdbarch_deprecated_extract_struct_value_address (gdbarch, d10v_extract_struct_value_address);
set_gdbarch_use_struct_convention (gdbarch, d10v_use_struct_convention);
set_gdbarch_frame_init_saved_regs (gdbarch, d10v_frame_init_saved_regs);
projects / deliverable / binutils-gdb.git / blobdiff