#include "defs.h"
#include "frame.h"
#include "obstack.h"
#include "symtab.h"
#include "gdbtypes.h"
#include "gdbcmd.h"
#include "gdbcore.h"
#include "gdb_string.h"
#include "value.h"
#include "inferior.h"
#include "dis-asm.h"
#include "symfile.h"
#include "objfiles.h"
#include "language.h"
#include "arch-utils.h"
#include "regcache.h"
#include "floatformat.h"
#include "sim-d10v.h"
struct frame_extra_info
{
CORE_ADDR return_pc;
int frameless;
int size;
};
struct gdbarch_tdep
{
int a0_regnum;
int nr_dmap_regs;
unsigned long (*dmap_register) (int nr);
unsigned long (*imap_register) (int nr);
};
#define DMEM_START 0x2000000
#define IMEM_START 0x1000000
#define STACK_START 0x200bffe
enum
{
R0_REGNUM = 0,
LR_REGNUM = 13,
PSW_REGNUM = 16,
NR_IMAP_REGS = 2,
NR_A_REGS = 2
};
#define NR_DMAP_REGS (gdbarch_tdep (current_gdbarch)->nr_dmap_regs)
#define A0_REGNUM (gdbarch_tdep (current_gdbarch)->a0_regnum)
#define ARG1_REGNUM R0_REGNUM
#define ARGN_REGNUM 3
#define RET1_REGNUM R0_REGNUM
extern void _initialize_d10v_tdep (void);
static void d10v_eva_prepare_to_trace (void);
static void d10v_eva_get_trace_data (void);
static int prologue_find_regs (unsigned short op, struct frame_info *fi,
CORE_ADDR addr);
static void d10v_frame_init_saved_regs (struct frame_info *);
static void do_d10v_pop_frame (struct frame_info *fi);
static int
d10v_frame_chain_valid (CORE_ADDR chain, struct frame_info *frame)
{
return ((chain) != 0 && (frame) != 0
&& (frame)->pc > IMEM_START
&& !inside_entry_file (FRAME_SAVED_PC (frame)));
}
static CORE_ADDR
d10v_stack_align (CORE_ADDR len)
{
return (len + 1) & ~1;
}
static int
d10v_use_struct_convention (int gcc_p, struct type *type)
{
long alignment;
int i;
if (TYPE_LENGTH (type) > 8)
return 1;
if (TYPE_NFIELDS (type) == 1)
return 0;
alignment = TYPE_LENGTH (TYPE_FIELD_TYPE (type, 0));
for (i = 1; i < TYPE_NFIELDS (type); i++)
{
if (TYPE_LENGTH (TYPE_FIELD_TYPE (type, i)) != alignment)
return 1;
}
if (alignment == 2 || alignment == 4)
return 0;
return 1;
}
static unsigned char *
d10v_breakpoint_from_pc (CORE_ADDR *pcptr, int *lenptr)
{
static unsigned char breakpoint[] =
{0x2f, 0x90, 0x5e, 0x00};
*lenptr = sizeof (breakpoint);
return breakpoint;
}
enum ts2_regnums
{
TS2_IMAP0_REGNUM = 32,
TS2_DMAP_REGNUM = 34,
TS2_NR_DMAP_REGS = 1,
TS2_A0_REGNUM = 35
};
static char *
d10v_ts2_register_name (int reg_nr)
{
static char *register_names[] =
{
"r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
"r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
"psw", "bpsw", "pc", "bpc", "cr4", "cr5", "cr6", "rpt_c",
"rpt_s", "rpt_e", "mod_s", "mod_e", "cr12", "cr13", "iba", "cr15",
"imap0", "imap1", "dmap", "a0", "a1"
};
if (reg_nr < 0)
return NULL;
if (reg_nr >= (sizeof (register_names) / sizeof (*register_names)))
return NULL;
return register_names[reg_nr];
}
enum ts3_regnums
{
TS3_IMAP0_REGNUM = 36,
TS3_DMAP0_REGNUM = 38,
TS3_NR_DMAP_REGS = 4,
TS3_A0_REGNUM = 32
};
static char *
d10v_ts3_register_name (int reg_nr)
{
static char *register_names[] =
{
"r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
"r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
"psw", "bpsw", "pc", "bpc", "cr4", "cr5", "cr6", "rpt_c",
"rpt_s", "rpt_e", "mod_s", "mod_e", "cr12", "cr13", "iba", "cr15",
"a0", "a1",
"spi", "spu",
"imap0", "imap1",
"dmap0", "dmap1", "dmap2", "dmap3"
};
if (reg_nr < 0)
return NULL;
if (reg_nr >= (sizeof (register_names) / sizeof (*register_names)))
return NULL;
return register_names[reg_nr];
}
static unsigned long
d10v_ts2_dmap_register (int reg_nr)
{
switch (reg_nr)
{
case 0:
case 1:
return 0x2000;
case 2:
return read_register (TS2_DMAP_REGNUM);
default:
return 0;
}
}
static unsigned long
d10v_ts3_dmap_register (int reg_nr)
{
return read_register (TS3_DMAP0_REGNUM + reg_nr);
}
static unsigned long
d10v_dmap_register (int reg_nr)
{
return gdbarch_tdep (current_gdbarch)->dmap_register (reg_nr);
}
static unsigned long
d10v_ts2_imap_register (int reg_nr)
{
return read_register (TS2_IMAP0_REGNUM + reg_nr);
}
static unsigned long
d10v_ts3_imap_register (int reg_nr)
{
return read_register (TS3_IMAP0_REGNUM + reg_nr);
}
static unsigned long
d10v_imap_register (int reg_nr)
{
return gdbarch_tdep (current_gdbarch)->imap_register (reg_nr);
}
static int
d10v_ts2_register_sim_regno (int nr)
{
if (nr >= TS2_IMAP0_REGNUM
&& nr < TS2_IMAP0_REGNUM + NR_IMAP_REGS)
return nr - TS2_IMAP0_REGNUM + SIM_D10V_IMAP0_REGNUM;
if (nr == TS2_DMAP_REGNUM)
return nr - TS2_DMAP_REGNUM + SIM_D10V_TS2_DMAP_REGNUM;
if (nr >= TS2_A0_REGNUM
&& nr < TS2_A0_REGNUM + NR_A_REGS)
return nr - TS2_A0_REGNUM + SIM_D10V_A0_REGNUM;
return nr;
}
static int
d10v_ts3_register_sim_regno (int nr)
{
if (nr >= TS3_IMAP0_REGNUM
&& nr < TS3_IMAP0_REGNUM + NR_IMAP_REGS)
return nr - TS3_IMAP0_REGNUM + SIM_D10V_IMAP0_REGNUM;
if (nr >= TS3_DMAP0_REGNUM
&& nr < TS3_DMAP0_REGNUM + TS3_NR_DMAP_REGS)
return nr - TS3_DMAP0_REGNUM + SIM_D10V_DMAP0_REGNUM;
if (nr >= TS3_A0_REGNUM
&& nr < TS3_A0_REGNUM + NR_A_REGS)
return nr - TS3_A0_REGNUM + SIM_D10V_A0_REGNUM;
return nr;
}
static int
d10v_register_byte (int reg_nr)
{
if (reg_nr < A0_REGNUM)
return (reg_nr * 2);
else if (reg_nr < (A0_REGNUM + NR_A_REGS))
return (A0_REGNUM * 2
+ (reg_nr - A0_REGNUM) * 8);
else
return (A0_REGNUM * 2
+ NR_A_REGS * 8
+ (reg_nr - A0_REGNUM - NR_A_REGS) * 2);
}
static int
d10v_register_raw_size (int reg_nr)
{
if (reg_nr < A0_REGNUM)
return 2;
else if (reg_nr < (A0_REGNUM + NR_A_REGS))
return 8;
else
return 2;
}
static struct type *
d10v_register_virtual_type (int reg_nr)
{
if (reg_nr == PC_REGNUM)
return builtin_type_void_func_ptr;
else if (reg_nr >= A0_REGNUM
&& reg_nr < (A0_REGNUM + NR_A_REGS))
return builtin_type_int64;
else
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) == DMEM_START);
}
static int
d10v_iaddr_p (CORE_ADDR x)
{
return (((x) & 0x3000000) == IMEM_START);
}
static CORE_ADDR
d10v_convert_iaddr_to_raw (CORE_ADDR x)
{
return (((x) >> 2) & 0xffff);
}
static CORE_ADDR
d10v_convert_daddr_to_raw (CORE_ADDR x)
{
return ((x) & 0xffff);
}
static void
d10v_address_to_pointer (struct type *type, void *buf, CORE_ADDR addr)
{
if (TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_FUNC
|| TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_METHOD)
{
store_unsigned_integer (buf, TYPE_LENGTH (type),
d10v_convert_iaddr_to_raw (addr));
}
else
{
store_unsigned_integer (buf, TYPE_LENGTH (type),
d10v_convert_daddr_to_raw (addr));
}
}
static CORE_ADDR
d10v_pointer_to_address (struct type *type, void *buf)
{
CORE_ADDR addr = extract_address (buf, TYPE_LENGTH (type));
if (TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_FUNC
|| 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);
}
static CORE_ADDR
d10v_integer_to_address (struct type *type, void *buf)
{
LONGEST val;
val = unpack_long (type, buf);
if (TYPE_CODE (type) == TYPE_CODE_INT
&& TYPE_LENGTH (type) <= TYPE_LENGTH (builtin_type_void_data_ptr))
return d10v_make_daddr (val & 0xffff);
else
return val;
}
static void
d10v_store_struct_return (CORE_ADDR addr, CORE_ADDR sp)
{
write_register (ARG1_REGNUM, (addr));
}
static void
d10v_store_return_value (struct type *type, char *valbuf)
{
write_register_bytes (REGISTER_BYTE (RET1_REGNUM),
valbuf,
TYPE_LENGTH (type));
}
static CORE_ADDR
d10v_extract_struct_value_address (char *regbuf)
{
return (extract_address ((regbuf) + REGISTER_BYTE (ARG1_REGNUM),
REGISTER_RAW_SIZE (ARG1_REGNUM))
| DMEM_START);
}
static CORE_ADDR
d10v_frame_saved_pc (struct frame_info *frame)
{
return ((frame)->extra_info->return_pc);
}
static CORE_ADDR
d10v_saved_pc_after_call (struct frame_info *frame)
{
return ((read_register (LR_REGNUM) << 2)
| IMEM_START);
}
static void
d10v_pop_frame (void)
{
generic_pop_current_frame (do_d10v_pop_frame);
}
static void
do_d10v_pop_frame (struct frame_info *fi)
{
CORE_ADDR fp;
int regnum;
char raw_buffer[8];
fp = FRAME_FP (fi);
d10v_frame_init_saved_regs (fi);
for (regnum = A0_REGNUM; regnum < A0_REGNUM + NR_A_REGS; regnum++)
{
if (fi->saved_regs[regnum])
{
read_memory (fi->saved_regs[regnum], raw_buffer, REGISTER_RAW_SIZE (regnum));
write_register_bytes (REGISTER_BYTE (regnum), raw_buffer, REGISTER_RAW_SIZE (regnum));
}
}
for (regnum = 0; regnum < SP_REGNUM; regnum++)
{
if (fi->saved_regs[regnum])
{
write_register (regnum, read_memory_unsigned_integer (fi->saved_regs[regnum], REGISTER_RAW_SIZE (regnum)));
}
}
if (fi->saved_regs[PSW_REGNUM])
{
write_register (PSW_REGNUM, read_memory_unsigned_integer (fi->saved_regs[PSW_REGNUM], REGISTER_RAW_SIZE (PSW_REGNUM)));
}
write_register (PC_REGNUM, read_register (LR_REGNUM));
write_register (SP_REGNUM, fp + fi->extra_info->size);
target_store_registers (-1);
flush_cached_frames ();
}
static int
check_prologue (unsigned short op)
{
if ((op & 0x7E1F) == 0x6C1F)
return 1;
if ((op & 0x7E3F) == 0x6E1F)
return 1;
if ((op & 0x7FE1) == 0x01E1)
return 1;
if (op == 0x417E)
return 1;
if (op == 0x5E00)
return 1;
if ((op & 0x7E1F) == 0x681E)
return 1;
if ((op & 0x7E3F) == 0x3A1E)
return 1;
return 0;
}
static CORE_ADDR
d10v_skip_prologue (CORE_ADDR pc)
{
unsigned long op;
unsigned short op1, op2;
CORE_ADDR func_addr, func_end;
struct symtab_and_line sal;
if (find_pc_partial_function (pc, NULL, &func_addr, &func_end))
{
sal = find_pc_line (func_addr, 0);
if (sal.end && sal.end < func_end)
return sal.end;
}
if (target_read_memory (pc, (char *) &op, 4))
return pc;
while (1)
{
op = (unsigned long) read_memory_integer (pc, 4);
if ((op & 0xC0000000) == 0xC0000000)
{
if (((op & 0x3FFF0000) != 0x01FF0000) &&
((op & 0x3F0F0000) != 0x340F0000) &&
((op & 0x3F1F0000) != 0x350F0000))
break;
}
else
{
if ((op & 0xC0000000) == 0x80000000)
{
op2 = (op & 0x3FFF8000) >> 15;
op1 = op & 0x7FFF;
}
else
{
op1 = (op & 0x3FFF8000) >> 15;
op2 = op & 0x7FFF;
}
if (check_prologue (op1))
{
if (!check_prologue (op2))
{
if (op1 != 0x5E00)
pc += 4;
break;
}
}
else
break;
}
pc += 4;
}
return pc;
}
static CORE_ADDR
d10v_frame_chain (struct frame_info *fi)
{
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;
if (!fi->saved_regs[FP_REGNUM])
{
if (!fi->saved_regs[SP_REGNUM]
|| fi->saved_regs[SP_REGNUM] == STACK_START)
return (CORE_ADDR) 0;
return fi->saved_regs[SP_REGNUM];
}
if (!read_memory_unsigned_integer (fi->saved_regs[FP_REGNUM],
REGISTER_RAW_SIZE (FP_REGNUM)))
return (CORE_ADDR) 0;
return d10v_make_daddr (read_memory_unsigned_integer (fi->saved_regs[FP_REGNUM],
REGISTER_RAW_SIZE (FP_REGNUM)));
}
static int next_addr, uses_frame;
static int
prologue_find_regs (unsigned short op, struct frame_info *fi, CORE_ADDR addr)
{
int n;
if ((op & 0x7E1F) == 0x6C1F)
{
n = (op & 0x1E0) >> 5;
next_addr -= 2;
fi->saved_regs[n] = next_addr;
return 1;
}
else if ((op & 0x7E3F) == 0x6E1F)
{
n = (op & 0x1E0) >> 5;
next_addr -= 4;
fi->saved_regs[n] = next_addr;
fi->saved_regs[n + 1] = next_addr + 2;
return 1;
}
if ((op & 0x7FE1) == 0x01E1)
{
n = (op & 0x1E) >> 1;
if (n == 0)
n = 16;
next_addr -= n;
return 1;
}
if (op == 0x417E)
{
uses_frame = 1;
return 1;
}
if (op == 0x5E00)
return 1;
if ((op & 0x7E1F) == 0x681E)
{
n = (op & 0x1E0) >> 5;
fi->saved_regs[n] = next_addr;
return 1;
}
if ((op & 0x7E3F) == 0x3A1E)
{
n = (op & 0x1E0) >> 5;
fi->saved_regs[n] = next_addr;
fi->saved_regs[n + 1] = next_addr + 2;
return 1;
}
return 0;
}
static void
d10v_frame_init_saved_regs (struct frame_info *fi)
{
CORE_ADDR fp, pc;
unsigned long op;
unsigned short op1, op2;
int i;
fp = fi->frame;
memset (fi->saved_regs, 0, SIZEOF_FRAME_SAVED_REGS);
next_addr = 0;
pc = get_pc_function_start (fi->pc);
uses_frame = 0;
while (1)
{
op = (unsigned long) read_memory_integer (pc, 4);
if ((op & 0xC0000000) == 0xC0000000)
{
if ((op & 0x3FFF0000) == 0x01FF0000)
{
short n = op & 0xFFFF;
next_addr += n;
}
else if ((op & 0x3F0F0000) == 0x340F0000)
{
short offset = op & 0xFFFF;
short n = (op >> 20) & 0xF;
fi->saved_regs[n] = next_addr + offset;
}
else if ((op & 0x3F1F0000) == 0x350F0000)
{
short offset = op & 0xFFFF;
short n = (op >> 20) & 0xF;
fi->saved_regs[n] = next_addr + offset;
fi->saved_regs[n + 1] = next_addr + offset + 2;
}
else
break;
}
else
{
if ((op & 0xC0000000) == 0x80000000)
{
op2 = (op & 0x3FFF8000) >> 15;
op1 = op & 0x7FFF;
}
else
{
op1 = (op & 0x3FFF8000) >> 15;
op2 = op & 0x7FFF;
}
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));
for (i = 0; i < NUM_REGS - 1; i++)
if (fi->saved_regs[i])
{
fi->saved_regs[i] = fp - (next_addr - 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));
fi->extra_info->return_pc = d10v_make_iaddr (return_pc);
}
else
{
fi->extra_info->return_pc = d10v_make_iaddr (read_register (LR_REGNUM));
}
if (!fi->saved_regs[SP_REGNUM])
{
if (uses_frame)
fi->saved_regs[SP_REGNUM] = read_register (FP_REGNUM) + fi->extra_info->size;
else
{
fi->saved_regs[SP_REGNUM] = fp + fi->extra_info->size;
fi->extra_info->frameless = 1;
fi->saved_regs[FP_REGNUM] = 0;
}
}
}
static void
d10v_init_extra_frame_info (int fromleaf, struct frame_info *fi)
{
fi->extra_info = (struct frame_extra_info *)
frame_obstack_alloc (sizeof (struct frame_extra_info));
frame_saved_regs_zalloc (fi);
fi->extra_info->frameless = 0;
fi->extra_info->size = 0;
fi->extra_info->return_pc = 0;
if (PC_IN_CALL_DUMMY (fi->pc, fi->frame, fi->frame))
{
return;
}
else
{
d10v_frame_init_saved_regs (fi);
}
}
static void
show_regs (char *args, int from_tty)
{
int a;
printf_filtered ("PC=%04lx (0x%lx) PSW=%04lx RPT_S=%04lx RPT_E=%04lx RPT_C=%04lx\n",
(long) read_register (PC_REGNUM),
(long) d10v_make_iaddr (read_register (PC_REGNUM)),
(long) read_register (PSW_REGNUM),
(long) read_register (24),
(long) read_register (25),
(long) read_register (23));
printf_filtered ("R0-R7 %04lx %04lx %04lx %04lx %04lx %04lx %04lx %04lx\n",
(long) read_register (0),
(long) read_register (1),
(long) read_register (2),
(long) read_register (3),
(long) read_register (4),
(long) read_register (5),
(long) read_register (6),
(long) read_register (7));
printf_filtered ("R8-R15 %04lx %04lx %04lx %04lx %04lx %04lx %04lx %04lx\n",
(long) read_register (8),
(long) read_register (9),
(long) read_register (10),
(long) read_register (11),
(long) read_register (12),
(long) read_register (13),
(long) read_register (14),
(long) read_register (15));
for (a = 0; a < NR_IMAP_REGS; a++)
{
if (a > 0)
printf_filtered (" ");
printf_filtered ("IMAP%d %04lx", a, d10v_imap_register (a));
}
if (NR_DMAP_REGS == 1)
printf_filtered (" DMAP %04lx\n", d10v_dmap_register (2));
else
{
for (a = 0; a < NR_DMAP_REGS; a++)
{
printf_filtered (" DMAP%d %04lx", a, d10v_dmap_register (a));
}
printf_filtered ("\n");
}
printf_filtered ("A0-A%d", NR_A_REGS - 1);
for (a = A0_REGNUM; a < A0_REGNUM + NR_A_REGS; a++)
{
char num[MAX_REGISTER_RAW_SIZE];
int i;
printf_filtered (" ");
read_register_gen (a, (char *) &num);
for (i = 0; i < MAX_REGISTER_RAW_SIZE; i++)
{
printf_filtered ("%02x", (num[i] & 0xff));
}
}
printf_filtered ("\n");
}
static CORE_ADDR
d10v_read_pc (ptid_t ptid)
{
ptid_t save_ptid;
CORE_ADDR pc;
CORE_ADDR retval;
save_ptid = inferior_ptid;
inferior_ptid = ptid;
pc = (int) read_register (PC_REGNUM);
inferior_ptid = save_ptid;
retval = d10v_make_iaddr (pc);
return retval;
}
static void
d10v_write_pc (CORE_ADDR val, ptid_t ptid)
{
ptid_t save_ptid;
save_ptid = inferior_ptid;
inferior_ptid = ptid;
write_register (PC_REGNUM, d10v_convert_iaddr_to_raw (val));
inferior_ptid = save_ptid;
}
static CORE_ADDR
d10v_read_sp (void)
{
return (d10v_make_daddr (read_register (SP_REGNUM)));
}
static void
d10v_write_sp (CORE_ADDR val)
{
write_register (SP_REGNUM, d10v_convert_daddr_to_raw (val));
}
static CORE_ADDR
d10v_read_fp (void)
{
return (d10v_make_daddr (read_register (FP_REGNUM)));
}
static CORE_ADDR
d10v_push_return_address (CORE_ADDR pc, CORE_ADDR sp)
{
write_register (LR_REGNUM, d10v_convert_iaddr_to_raw (CALL_DUMMY_ADDRESS ()));
return sp;
}
struct stack_item
{
int len;
struct stack_item *prev;
void *data;
};
static struct stack_item *push_stack_item (struct stack_item *prev,
void *contents, int len);
static struct stack_item *
push_stack_item (struct stack_item *prev, void *contents, int len)
{
struct stack_item *si;
si = xmalloc (sizeof (struct stack_item));
si->data = xmalloc (len);
si->len = len;
si->prev = prev;
memcpy (si->data, contents, len);
return si;
}
static struct stack_item *pop_stack_item (struct stack_item *si);
static struct stack_item *
pop_stack_item (struct stack_item *si)
{
struct stack_item *dead = si;
si = si->prev;
xfree (dead->data);
xfree (dead);
return si;
}
static CORE_ADDR
d10v_push_arguments (int nargs, struct value **args, CORE_ADDR sp,
int struct_return, CORE_ADDR struct_addr)
{
int i;
int regnum = ARG1_REGNUM;
struct stack_item *si = NULL;
for (i = 0; i < nargs; i++)
{
struct value *arg = args[i];
struct type *type = check_typedef (VALUE_TYPE (arg));
char *contents = VALUE_CONTENTS (arg);
int len = TYPE_LENGTH (type);
{
int aligned_regnum = (regnum + 1) & ~1;
if (len <= 2 && regnum <= ARGN_REGNUM)
{
long val = extract_unsigned_integer (contents, len);
write_register (regnum++, val);
}
else if (len <= (ARGN_REGNUM - aligned_regnum + 1) * 2)
{
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
{
regnum = ARGN_REGNUM + 1;
si = push_stack_item (si, contents, len);
}
}
}
while (si)
{
sp = (sp - si->len) & ~1;
write_memory (sp, si->data, si->len);
si = pop_stack_item (si);
}
return sp;
}
static void
d10v_extract_return_value (struct type *type, char regbuf[REGISTER_BYTES],
char *valbuf)
{
int len;
{
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
{
memcpy (valbuf, regbuf + REGISTER_BYTE (RET1_REGNUM) + 1, len);
}
}
}
static void
remote_d10v_translate_xfer_address (CORE_ADDR memaddr, int nr_bytes,
CORE_ADDR *targ_addr, int *targ_len)
{
long out_addr;
long out_len;
out_len = sim_d10v_translate_addr (memaddr, nr_bytes,
&out_addr,
d10v_dmap_register,
d10v_imap_register);
*targ_addr = out_addr;
*targ_len = out_len;
}
#define DBBC_ADDR (0xd80000)
#define TRACE_BUFFER_BASE (0xf40000)
static void trace_command (char *, int);
static void untrace_command (char *, int);
static void trace_info (char *, int);
static void tdisassemble_command (char *, int);
static void display_trace (int, int);
static int tracing;
static CORE_ADDR last_pc;
static int trace_display;
static int default_trace_show_source = 1;
struct trace_buffer
{
int size;
short *counts;
CORE_ADDR *addrs;
}
trace_data;
static void
trace_command (char *args, int from_tty)
{
trace_data.size = 0;
if (trace_data.counts == NULL)
trace_data.counts = (short *) xmalloc (65536 * sizeof (short));
if (trace_data.addrs == NULL)
trace_data.addrs = (CORE_ADDR *) xmalloc (65536 * sizeof (CORE_ADDR));
tracing = 1;
printf_filtered ("Tracing is now on.\n");
}
static void
untrace_command (char *args, int from_tty)
{
tracing = 0;
printf_filtered ("Tracing is now off.\n");
}
static void
trace_info (char *args, int from_tty)
{
int i;
if (trace_data.size)
{
printf_filtered ("%d entries in trace buffer:\n", trace_data.size);
for (i = 0; i < trace_data.size; ++i)
{
printf_filtered ("%d: %d instruction%s at 0x%s\n",
i,
trace_data.counts[i],
(trace_data.counts[i] == 1 ? "" : "s"),
paddr_nz (trace_data.addrs[i]));
}
}
else
printf_filtered ("No entries in trace buffer.\n");
printf_filtered ("Tracing is currently %s.\n", (tracing ? "on" : "off"));
}
static int
print_insn (CORE_ADDR memaddr, struct ui_file *stream)
{
if (tm_print_insn == NULL)
internal_error (__FILE__, __LINE__,
"print_insn: no disassembler");
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 TARGET_PRINT_INSN (memaddr, &tm_print_insn_info);
}
static void
d10v_eva_prepare_to_trace (void)
{
if (!tracing)
return;
last_pc = read_register (PC_REGNUM);
}
static void
d10v_eva_get_trace_data (void)
{
int count, i, j, oldsize;
int trace_addr, trace_seg, trace_cnt, next_cnt;
unsigned int last_trace, trace_word, next_word;
unsigned int *tmpspace;
if (!tracing)
return;
tmpspace = xmalloc (65536 * sizeof (unsigned int));
last_trace = read_memory_unsigned_integer (DBBC_ADDR, 2) << 2;
count = 0;
while (last_trace > 0)
{
QUIT;
trace_word =
read_memory_unsigned_integer (TRACE_BUFFER_BASE + last_trace, 4);
trace_addr = trace_word & 0xffff;
last_trace -= 4;
if (trace_addr == 0xffd5)
continue;
tmpspace[count++] = trace_word;
if (trace_addr == last_pc)
break;
if (count > 65535)
break;
}
for (i = 0; i < count; ++i)
{
trace_word = tmpspace[i];
next_word = ((i == 0) ? 0 : tmpspace[i - 1]);
trace_addr = trace_word & 0xffff;
next_cnt = (next_word >> 24) & 0xff;
j = trace_data.size + count - i - 1;
trace_data.addrs[j] = (trace_addr << 2) + 0x1000000;
trace_data.counts[j] = next_cnt + 1;
}
oldsize = trace_data.size;
trace_data.size += count;
xfree (tmpspace);
if (trace_display)
display_trace (oldsize, trace_data.size);
}
static void
tdisassemble_command (char *arg, int from_tty)
{
int i, count;
CORE_ADDR low, high;
char *space_index;
if (!arg)
{
low = 0;
high = trace_data.size;
}
else if (!(space_index = (char *) strchr (arg, ' ')))
{
low = parse_and_eval_address (arg);
high = low + 5;
}
else
{
*space_index = '\0';
low = parse_and_eval_address (arg);
high = parse_and_eval_address (space_index + 1);
if (high < low)
high = low;
}
printf_filtered ("Dump of trace from %s to %s:\n", paddr_u (low), paddr_u (high));
display_trace (low, high);
printf_filtered ("End of trace dump.\n");
gdb_flush (gdb_stdout);
}
static void
display_trace (int low, int high)
{
int i, count, trace_show_source, first, suppress;
CORE_ADDR next_address;
trace_show_source = default_trace_show_source;
if (!have_full_symbols () && !have_partial_symbols ())
{
trace_show_source = 0;
printf_filtered ("No symbol table is loaded. Use the \"file\" command.\n");
printf_filtered ("Trace will not display any source.\n");
}
first = 1;
suppress = 0;
for (i = low; i < high; ++i)
{
next_address = trace_data.addrs[i];
count = trace_data.counts[i];
while (count-- > 0)
{
QUIT;
if (trace_show_source)
{
struct symtab_and_line sal, sal_prev;
sal_prev = find_pc_line (next_address - 4, 0);
sal = find_pc_line (next_address, 0);
if (sal.symtab)
{
if (first || sal.line != sal_prev.line)
print_source_lines (sal.symtab, sal.line, 1, 0);
suppress = 0;
}
else
{
if (!suppress)
printf_filtered ("No source file for address %s.\n",
local_hex_string ((unsigned long) sal.pc));
suppress = 1;
}
}
first = 0;
print_address (next_address, gdb_stdout);
printf_filtered (":");
printf_filtered ("\t");
wrap_here (" ");
next_address = next_address + print_insn (next_address, gdb_stdout);
printf_filtered ("\n");
gdb_flush (gdb_stdout);
}
}
}
static gdbarch_init_ftype d10v_gdbarch_init;
static struct gdbarch *
d10v_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
{
static LONGEST d10v_call_dummy_words[] =
{0};
struct gdbarch *gdbarch;
int d10v_num_regs;
struct gdbarch_tdep *tdep;
gdbarch_register_name_ftype *d10v_register_name;
gdbarch_register_sim_regno_ftype *d10v_register_sim_regno;
arches = gdbarch_list_lookup_by_info (arches, &info);
if (arches != NULL)
return arches->gdbarch;
tdep = XMALLOC (struct gdbarch_tdep);
gdbarch = gdbarch_alloc (&info, tdep);
switch (info.bfd_arch_info->mach)
{
case bfd_mach_d10v_ts2:
d10v_num_regs = 37;
d10v_register_name = d10v_ts2_register_name;
d10v_register_sim_regno = d10v_ts2_register_sim_regno;
tdep->a0_regnum = TS2_A0_REGNUM;
tdep->nr_dmap_regs = TS2_NR_DMAP_REGS;
tdep->dmap_register = d10v_ts2_dmap_register;
tdep->imap_register = d10v_ts2_imap_register;
break;
default:
case bfd_mach_d10v_ts3:
d10v_num_regs = 42;
d10v_register_name = d10v_ts3_register_name;
d10v_register_sim_regno = d10v_ts3_register_sim_regno;
tdep->a0_regnum = TS3_A0_REGNUM;
tdep->nr_dmap_regs = TS3_NR_DMAP_REGS;
tdep->dmap_register = d10v_ts3_dmap_register;
tdep->imap_register = d10v_ts3_imap_register;
break;
}
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_read_sp (gdbarch, d10v_read_sp);
set_gdbarch_write_sp (gdbarch, d10v_write_sp);
set_gdbarch_num_regs (gdbarch, d10v_num_regs);
set_gdbarch_sp_regnum (gdbarch, 15);
set_gdbarch_fp_regnum (gdbarch, 11);
set_gdbarch_pc_regnum (gdbarch, 18);
set_gdbarch_register_name (gdbarch, d10v_register_name);
set_gdbarch_register_size (gdbarch, 2);
set_gdbarch_register_bytes (gdbarch, (d10v_num_regs - 2) * 2 + 16);
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, generic_register_virtual_size);
set_gdbarch_max_register_virtual_size (gdbarch, 8);
set_gdbarch_register_virtual_type (gdbarch, d10v_register_virtual_type);
set_gdbarch_ptr_bit (gdbarch, 2 * TARGET_CHAR_BIT);
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, 8 * TARGET_CHAR_BIT);
set_gdbarch_float_bit (gdbarch, 4 * TARGET_CHAR_BIT);
set_gdbarch_double_bit (gdbarch, 4 * TARGET_CHAR_BIT);
set_gdbarch_long_double_bit (gdbarch, 8 * TARGET_CHAR_BIT);
switch (info.byte_order)
{
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 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);
break;
default:
internal_error (__FILE__, __LINE__,
"d10v_gdbarch_init: bad byte order for float format");
}
set_gdbarch_use_generic_dummy_frames (gdbarch, 1);
set_gdbarch_call_dummy_length (gdbarch, 0);
set_gdbarch_call_dummy_location (gdbarch, AT_ENTRY_POINT);
set_gdbarch_call_dummy_address (gdbarch, entry_point_address);
set_gdbarch_call_dummy_breakpoint_offset_p (gdbarch, 1);
set_gdbarch_call_dummy_breakpoint_offset (gdbarch, 0);
set_gdbarch_call_dummy_start_offset (gdbarch, 0);
set_gdbarch_pc_in_call_dummy (gdbarch, generic_pc_in_call_dummy);
set_gdbarch_call_dummy_words (gdbarch, d10v_call_dummy_words);
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_fix_call_dummy (gdbarch, generic_fix_call_dummy);
set_gdbarch_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_use_struct_convention (gdbarch, d10v_use_struct_convention);
set_gdbarch_frame_init_saved_regs (gdbarch, d10v_frame_init_saved_regs);
set_gdbarch_init_extra_frame_info (gdbarch, d10v_init_extra_frame_info);
set_gdbarch_pop_frame (gdbarch, d10v_pop_frame);
set_gdbarch_skip_prologue (gdbarch, d10v_skip_prologue);
set_gdbarch_inner_than (gdbarch, core_addr_lessthan);
set_gdbarch_decr_pc_after_break (gdbarch, 4);
set_gdbarch_function_start_offset (gdbarch, 0);
set_gdbarch_breakpoint_from_pc (gdbarch, d10v_breakpoint_from_pc);
set_gdbarch_remote_translate_xfer_address (gdbarch, remote_d10v_translate_xfer_address);
set_gdbarch_frame_args_skip (gdbarch, 0);
set_gdbarch_frameless_function_invocation (gdbarch, frameless_look_for_prologue);
set_gdbarch_frame_chain (gdbarch, d10v_frame_chain);
set_gdbarch_frame_chain_valid (gdbarch, d10v_frame_chain_valid);
set_gdbarch_frame_saved_pc (gdbarch, d10v_frame_saved_pc);
set_gdbarch_frame_args_address (gdbarch, default_frame_address);
set_gdbarch_frame_locals_address (gdbarch, default_frame_address);
set_gdbarch_saved_pc_after_call (gdbarch, d10v_saved_pc_after_call);
set_gdbarch_frame_num_args (gdbarch, frame_num_args_unknown);
set_gdbarch_stack_align (gdbarch, d10v_stack_align);
set_gdbarch_register_sim_regno (gdbarch, d10v_register_sim_regno);
set_gdbarch_extra_stack_alignment_needed (gdbarch, 0);
return gdbarch;
}
extern void (*target_resume_hook) (void);
extern void (*target_wait_loop_hook) (void);
void
_initialize_d10v_tdep (void)
{
register_gdbarch_init (bfd_arch_d10v, d10v_gdbarch_init);
tm_print_insn = print_insn_d10v;
target_resume_hook = d10v_eva_prepare_to_trace;
target_wait_loop_hook = d10v_eva_get_trace_data;
add_com ("regs", class_vars, show_regs, "Print all registers");
add_com ("itrace", class_support, trace_command,
"Enable tracing of instruction execution.");
add_com ("iuntrace", class_support, untrace_command,
"Disable tracing of instruction execution.");
add_com ("itdisassemble", class_vars, tdisassemble_command,
"Disassemble the trace buffer.\n\
Two optional arguments specify a range of trace buffer entries\n\
as reported by info trace (NOT addresses!).");
add_info ("itrace", trace_info,
"Display info about the trace data buffer.");
add_show_from_set (add_set_cmd ("itracedisplay", no_class,
var_integer, (char *) &trace_display,
"Set automatic display of trace.\n", &setlist),
&showlist);
add_show_from_set (add_set_cmd ("itracesource", no_class,
var_integer, (char *) &default_trace_show_source,
"Set display of source code with trace.\n", &setlist),
&showlist);
}