#include "defs.h"
#include "value.h"
#include "arch-utils.h"
#include "regcache.h"
#include "gdbcore.h"
#include "objfiles.h"
#include "gdb_assert.h"
#include "dis-asm.h"
#include "dwarf2-frame.h"
#include "frame-base.h"
#include "frame-unwind.h"
enum gdb_regnum
{
E_R0_REGNUM, E_ER0_REGNUM = E_R0_REGNUM, E_ARG0_REGNUM = E_R0_REGNUM,
E_RET0_REGNUM = E_R0_REGNUM,
E_R1_REGNUM, E_ER1_REGNUM = E_R1_REGNUM, E_RET1_REGNUM = E_R1_REGNUM,
E_R2_REGNUM, E_ER2_REGNUM = E_R2_REGNUM, E_ARGLAST_REGNUM = E_R2_REGNUM,
E_R3_REGNUM, E_ER3_REGNUM = E_R3_REGNUM,
E_R4_REGNUM, E_ER4_REGNUM = E_R4_REGNUM,
E_R5_REGNUM, E_ER5_REGNUM = E_R5_REGNUM,
E_R6_REGNUM, E_ER6_REGNUM = E_R6_REGNUM, E_FP_REGNUM = E_R6_REGNUM,
E_SP_REGNUM,
E_CCR_REGNUM,
E_PC_REGNUM,
E_CYCLES_REGNUM,
E_TICK_REGNUM, E_EXR_REGNUM = E_TICK_REGNUM,
E_INST_REGNUM, E_TICKS_REGNUM = E_INST_REGNUM,
E_INSTS_REGNUM,
E_MACH_REGNUM,
E_MACL_REGNUM,
E_SBR_REGNUM,
E_VBR_REGNUM
};
#define H8300_MAX_NUM_REGS 18
#define E_PSEUDO_CCR_REGNUM (NUM_REGS)
#define E_PSEUDO_EXR_REGNUM (NUM_REGS+1)
struct h8300_frame_cache
{
CORE_ADDR base;
CORE_ADDR sp_offset;
CORE_ADDR pc;
int uses_fp;
CORE_ADDR saved_regs[H8300_MAX_NUM_REGS];
CORE_ADDR saved_sp;
};
enum
{
h8300_reg_size = 2,
h8300h_reg_size = 4,
h8300_max_reg_size = 4,
};
static int is_h8300hmode (struct gdbarch *gdbarch);
static int is_h8300smode (struct gdbarch *gdbarch);
static int is_h8300sxmode (struct gdbarch *gdbarch);
static int is_h8300_normal_mode (struct gdbarch *gdbarch);
#define BINWORD ((is_h8300hmode (current_gdbarch) \
&& !is_h8300_normal_mode (current_gdbarch)) \
? h8300h_reg_size : h8300_reg_size)
static CORE_ADDR
h8300_unwind_pc (struct gdbarch *gdbarch, struct frame_info *next_frame)
{
return frame_unwind_register_unsigned (next_frame, E_PC_REGNUM);
}
static CORE_ADDR
h8300_unwind_sp (struct gdbarch *gdbarch, struct frame_info *next_frame)
{
return frame_unwind_register_unsigned (next_frame, E_SP_REGNUM);
}
static struct frame_id
h8300_unwind_dummy_id (struct gdbarch *gdbarch, struct frame_info *next_frame)
{
return frame_id_build (h8300_unwind_sp (gdbarch, next_frame),
frame_pc_unwind (next_frame));
}
static void
h8300_init_frame_cache (struct h8300_frame_cache *cache)
{
int i;
cache->base = 0;
cache->sp_offset = 0;
cache->pc = 0;
cache->uses_fp = 0;
for (i = 0; i < NUM_REGS; i++)
cache->saved_regs[i] = -1;
}
#define IS_MOVB_RnRm(x) (((x) & 0xff88) == 0x0c88)
#define IS_MOVW_RnRm(x) (((x) & 0xff88) == 0x0d00)
#define IS_MOVL_RnRm(x) (((x) & 0xff88) == 0x0f80)
#define IS_MOVB_Rn16_SP(x) (((x) & 0xfff0) == 0x6ee0)
#define IS_MOVB_EXT(x) ((x) == 0x7860)
#define IS_MOVB_Rn24_SP(x) (((x) & 0xfff0) == 0x6aa0)
#define IS_MOVW_Rn16_SP(x) (((x) & 0xfff0) == 0x6fe0)
#define IS_MOVW_EXT(x) ((x) == 0x78e0)
#define IS_MOVW_Rn24_SP(x) (((x) & 0xfff0) == 0x6ba0)
#define IS_MOVL_PRE(x) ((x) == 0x0100)
#define IS_MOVL_Rn16_SP(x) (((x) & 0xfff0) == 0x6fe0)
#define IS_MOVL_EXT(x) ((x) == 0x78e0)
#define IS_MOVL_Rn24_SP(x) (((x) & 0xfff0) == 0x6ba0)
#define IS_PUSHFP_MOVESPFP(x) ((x) == 0x6df60d76)
#define IS_PUSH_FP(x) ((x) == 0x01006df6)
#define IS_MOV_SP_FP(x) ((x) == 0x0ff6)
#define IS_SUB2_SP(x) ((x) == 0x1b87)
#define IS_SUB4_SP(x) ((x) == 0x1b97)
#define IS_ADD_IMM_SP(x) ((x) == 0x7a1f)
#define IS_SUB_IMM_SP(x) ((x) == 0x7a3f)
#define IS_SUBL4_SP(x) ((x) == 0x1acf)
#define IS_MOV_IMM_Rn(x) (((x) & 0xfff0) == 0x7905)
#define IS_SUB_RnSP(x) (((x) & 0xff0f) == 0x1907)
#define IS_ADD_RnSP(x) (((x) & 0xff0f) == 0x0907)
#define IS_PUSH(x) (((x) & 0xfff0) == 0x6df0)
static int
h8300_is_argument_spill (CORE_ADDR pc)
{
int w = read_memory_unsigned_integer (pc, 2);
if ((IS_MOVB_RnRm (w) || IS_MOVW_RnRm (w) || IS_MOVL_RnRm (w))
&& (w & 0x70) <= 0x20
&& (w & 0x7) >= 0x3 && (w & 0x7) <= 0x5)
return 2;
if (IS_MOVB_Rn16_SP (w)
&& 8 <= (w & 0xf) && (w & 0xf) <= 10)
{
if (read_memory_integer (pc + 2, 2) < 0)
return 4;
}
else if (IS_MOVB_EXT (w))
{
if (IS_MOVB_Rn24_SP (read_memory_unsigned_integer (pc + 2, 2)))
{
LONGEST disp = read_memory_integer (pc + 4, 4);
if (disp < 0 && disp > 0xffffff)
return 8;
}
}
else if (IS_MOVW_Rn16_SP (w)
&& (w & 0xf) <= 2)
{
if (read_memory_integer (pc + 2, 2) < 0)
return 4;
}
else if (IS_MOVW_EXT (w))
{
if (IS_MOVW_Rn24_SP (read_memory_unsigned_integer (pc + 2, 2)))
{
LONGEST disp = read_memory_integer (pc + 4, 4);
if (disp < 0 && disp > 0xffffff)
return 8;
}
}
else if (IS_MOVL_PRE (w))
{
int w2 = read_memory_integer (pc + 2, 2);
if (IS_MOVL_Rn16_SP (w2)
&& (w2 & 0xf) <= 2)
{
if (read_memory_integer (pc + 4, 2) < 0)
return 6;
}
else if (IS_MOVL_EXT (w2))
{
int w3 = read_memory_integer (pc + 4, 2);
if (IS_MOVL_Rn24_SP (read_memory_integer (pc + 4, 2)))
{
LONGEST disp = read_memory_integer (pc + 6, 4);
if (disp < 0 && disp > 0xffffff)
return 10;
}
}
}
return 0;
}
static CORE_ADDR
h8300_analyze_prologue (CORE_ADDR pc, CORE_ADDR current_pc,
struct h8300_frame_cache *cache)
{
unsigned int op;
int regno, i, spill_size;
cache->sp_offset = 0;
if (pc >= current_pc)
return current_pc;
op = read_memory_unsigned_integer (pc, 4);
if (IS_PUSHFP_MOVESPFP (op))
{
cache->saved_regs[E_FP_REGNUM] = 0;
cache->uses_fp = 1;
pc += 4;
}
else if (IS_PUSH_FP (op))
{
cache->saved_regs[E_FP_REGNUM] = 0;
pc += 4;
if (pc >= current_pc)
return current_pc;
op = read_memory_unsigned_integer (pc, 2);
if (IS_MOV_SP_FP (op))
{
cache->uses_fp = 1;
pc += 2;
}
}
while (pc < current_pc)
{
op = read_memory_unsigned_integer (pc, 2);
if (IS_SUB2_SP (op))
{
cache->sp_offset += 2;
pc += 2;
}
else if (IS_SUB4_SP (op))
{
cache->sp_offset += 4;
pc += 2;
}
else if (IS_ADD_IMM_SP (op))
{
cache->sp_offset += -read_memory_integer (pc + 2, 2);
pc += 4;
}
else if (IS_SUB_IMM_SP (op))
{
cache->sp_offset += read_memory_integer (pc + 2, 2);
pc += 4;
}
else if (IS_SUBL4_SP (op))
{
cache->sp_offset += 4;
pc += 2;
}
else if (IS_MOV_IMM_Rn (op))
{
int offset = read_memory_integer (pc + 2, 2);
regno = op & 0x000f;
op = read_memory_unsigned_integer (pc + 4, 2);
if (IS_ADD_RnSP (op) && (op & 0x00f0) == regno)
{
cache->sp_offset -= offset;
pc += 6;
}
else if (IS_SUB_RnSP (op) && (op & 0x00f0) == regno)
{
cache->sp_offset += offset;
pc += 6;
}
else
break;
}
else if (IS_PUSH (op))
{
regno = op & 0x000f;
cache->sp_offset += 2;
cache->saved_regs[regno] = cache->sp_offset;
pc += 2;
}
else if (op == 0x0100)
{
op = read_memory_unsigned_integer (pc + 2, 2);
if (IS_PUSH (op))
{
regno = op & 0x000f;
cache->sp_offset += 4;
cache->saved_regs[regno] = cache->sp_offset;
pc += 4;
}
else
break;
}
else if ((op & 0xffcf) == 0x0100)
{
int op1;
op1 = read_memory_unsigned_integer (pc + 2, 2);
if (IS_PUSH (op1))
{
i = ((op & 0x0030) >> 4) + 1;
regno = op1 & 0x000f;
for (; i > 0; regno++, --i)
{
cache->sp_offset += 4;
cache->saved_regs[regno] = cache->sp_offset;
}
pc += 4;
}
else
break;
}
else
break;
}
while ((spill_size = h8300_is_argument_spill (pc)) > 0
&& pc + spill_size <= current_pc)
pc += spill_size;
return pc;
}
static struct h8300_frame_cache *
h8300_frame_cache (struct frame_info *next_frame, void **this_cache)
{
struct h8300_frame_cache *cache;
char buf[4];
int i;
CORE_ADDR current_pc;
if (*this_cache)
return *this_cache;
cache = FRAME_OBSTACK_ZALLOC (struct h8300_frame_cache);
h8300_init_frame_cache (cache);
*this_cache = cache;
cache->base = frame_unwind_register_unsigned (next_frame, E_FP_REGNUM);
if (cache->base == 0)
return cache;
cache->saved_regs[E_PC_REGNUM] = -BINWORD;
cache->pc = frame_func_unwind (next_frame);
current_pc = frame_pc_unwind (next_frame);
if (cache->pc != 0)
h8300_analyze_prologue (cache->pc, current_pc, cache);
if (!cache->uses_fp)
{
cache->base = frame_unwind_register_unsigned (next_frame, E_SP_REGNUM)
+ cache->sp_offset;
cache->saved_sp = cache->base + BINWORD;
cache->saved_regs[E_PC_REGNUM] = 0;
}
else
{
cache->saved_sp = cache->base + 2 * BINWORD;
cache->saved_regs[E_PC_REGNUM] = -BINWORD;
}
for (i = 0; i < NUM_REGS; i++)
if (cache->saved_regs[i] != -1)
cache->saved_regs[i] = cache->base - cache->saved_regs[i];
return cache;
}
static void
h8300_frame_this_id (struct frame_info *next_frame, void **this_cache,
struct frame_id *this_id)
{
struct h8300_frame_cache *cache =
h8300_frame_cache (next_frame, this_cache);
if (cache->base == 0)
return;
*this_id = frame_id_build (cache->saved_sp, cache->pc);
}
static void
h8300_frame_prev_register (struct frame_info *next_frame, void **this_cache,
int regnum, enum opt_state *optimizedp,
enum lval_type *lvalp, CORE_ADDR *addrp,
int *realnump, void *valuep)
{
struct h8300_frame_cache *cache =
h8300_frame_cache (next_frame, this_cache);
gdb_assert (regnum >= 0);
if (regnum == E_SP_REGNUM && cache->saved_sp)
{
*optimizedp = opt_okay;
*lvalp = not_lval;
*addrp = 0;
*realnump = -1;
if (valuep)
store_unsigned_integer (valuep, BINWORD, cache->saved_sp);
return;
}
if (regnum < NUM_REGS && cache->saved_regs[regnum] != -1)
{
*optimizedp = opt_okay;
*lvalp = lval_memory;
*addrp = cache->saved_regs[regnum];
*realnump = -1;
if (valuep)
read_memory (*addrp, valuep, register_size (current_gdbarch, regnum));
return;
}
frame_register_unwind (next_frame, regnum,
optimizedp, lvalp, addrp, realnump, valuep);
}
static const struct frame_unwind h8300_frame_unwind = {
NORMAL_FRAME,
h8300_frame_this_id,
h8300_frame_prev_register
};
static const struct frame_unwind *
h8300_frame_sniffer (struct frame_info *next_frame)
{
return &h8300_frame_unwind;
}
static CORE_ADDR
h8300_frame_base_address (struct frame_info *next_frame, void **this_cache)
{
struct h8300_frame_cache *cache = h8300_frame_cache (next_frame, this_cache);
return cache->base;
}
static const struct frame_base h8300_frame_base = {
&h8300_frame_unwind,
h8300_frame_base_address,
h8300_frame_base_address,
h8300_frame_base_address
};
static CORE_ADDR
h8300_skip_prologue (CORE_ADDR pc)
{
CORE_ADDR func_addr = 0 , func_end = 0;
if (find_pc_partial_function (pc, NULL, &func_addr, &func_end))
{
struct symtab_and_line sal;
struct h8300_frame_cache cache;
sal = find_pc_line (func_addr, 0);
if (sal.end && sal.end < func_end)
return sal.end;
h8300_init_frame_cache (&cache);
return h8300_analyze_prologue (func_addr, func_end, &cache);
}
return (CORE_ADDR) pc;
}
static CORE_ADDR
h8300_push_dummy_call (struct gdbarch *gdbarch, struct value *function,
struct regcache *regcache, CORE_ADDR bp_addr,
int nargs, struct value **args, CORE_ADDR sp,
int struct_return, CORE_ADDR struct_addr)
{
int stack_alloc = 0, stack_offset = 0;
int wordsize = BINWORD;
int reg = E_ARG0_REGNUM;
int argument;
sp = align_down (sp, wordsize);
for (argument = 0; argument < nargs; argument++)
stack_alloc += align_up (TYPE_LENGTH (value_type (args[argument])),
wordsize);
sp -= stack_alloc;
if (struct_return)
regcache_cooked_write_unsigned (regcache, reg++, struct_addr);
for (argument = 0; argument < nargs; argument++)
{
struct type *type = value_type (args[argument]);
int len = TYPE_LENGTH (type);
char *contents = (char *) value_contents (args[argument]);
int padded_len = align_up (len, wordsize);
char *padded = alloca (padded_len);
memset (padded, 0, padded_len);
memcpy (len < wordsize ? padded + padded_len - len : padded,
contents, len);
if (padded_len <= (E_ARGLAST_REGNUM - reg + 1) * wordsize)
{
if (len > wordsize && len % wordsize)
{
write_memory (sp + stack_offset, padded, padded_len);
stack_offset += padded_len;
reg += padded_len / wordsize;
}
else
{
int offset;
for (offset = 0; offset < padded_len; offset += wordsize)
{
ULONGEST word = extract_unsigned_integer (padded + offset,
wordsize);
regcache_cooked_write_unsigned (regcache, reg++, word);
}
}
}
else
{
write_memory (sp + stack_offset, padded, padded_len);
stack_offset += padded_len;
reg = E_ARGLAST_REGNUM + 1;
}
}
sp -= wordsize;
write_memory_unsigned_integer (sp, wordsize, bp_addr);
regcache_cooked_write_unsigned (regcache, E_SP_REGNUM, sp);
return sp + wordsize;
}
static void
h8300_extract_return_value (struct type *type, struct regcache *regcache,
void *valbuf)
{
int len = TYPE_LENGTH (type);
ULONGEST c, addr;
switch (len)
{
case 1:
case 2:
regcache_cooked_read_unsigned (regcache, E_RET0_REGNUM, &c);
store_unsigned_integer (valbuf, len, c);
break;
case 4:
regcache_cooked_read_unsigned (regcache, E_RET0_REGNUM, &c);
store_unsigned_integer (valbuf, 2, c);
regcache_cooked_read_unsigned (regcache, E_RET1_REGNUM, &c);
store_unsigned_integer ((void *) ((char *) valbuf + 2), 2, c);
break;
case 8:
if (TYPE_CODE (type) == TYPE_CODE_INT)
{
regcache_cooked_read_unsigned (regcache, E_RET0_REGNUM, &addr);
c = read_memory_unsigned_integer ((CORE_ADDR) addr, len);
store_unsigned_integer (valbuf, len, c);
}
else
{
error ("I don't know how this 8 byte value is returned.");
}
break;
}
}
static void
h8300h_extract_return_value (struct type *type, struct regcache *regcache,
void *valbuf)
{
int len = TYPE_LENGTH (type);
ULONGEST c, addr;
switch (len)
{
case 1:
case 2:
case 4:
regcache_cooked_read_unsigned (regcache, E_RET0_REGNUM, &c);
store_unsigned_integer (valbuf, len, c);
break;
case 8:
if (TYPE_CODE (type) == TYPE_CODE_INT)
{
regcache_cooked_read_unsigned (regcache, E_RET0_REGNUM, &c);
store_unsigned_integer (valbuf, 4, c);
regcache_cooked_read_unsigned (regcache, E_RET1_REGNUM, &c);
store_unsigned_integer ((void *) ((char *) valbuf + 4), 4, c);
}
else
{
error ("I don't know how this 8 byte value is returned.");
}
break;
}
}
int
h8300_use_struct_convention (struct type *value_type)
{
if (TYPE_CODE (value_type) == TYPE_CODE_STRUCT
|| TYPE_CODE (value_type) == TYPE_CODE_UNION)
return 1;
return !(TYPE_LENGTH (value_type) == 1
|| TYPE_LENGTH (value_type) == 2
|| TYPE_LENGTH (value_type) == 4);
}
int
h8300h_use_struct_convention (struct type *value_type)
{
if (TYPE_CODE (value_type) == TYPE_CODE_STRUCT
|| TYPE_CODE (value_type) == TYPE_CODE_UNION)
return 1;
return !(TYPE_LENGTH (value_type) == 1
|| TYPE_LENGTH (value_type) == 2
|| TYPE_LENGTH (value_type) == 4
|| (TYPE_LENGTH (value_type) == 8
&& TYPE_CODE (value_type) == TYPE_CODE_INT));
}
static void
h8300_store_return_value (struct type *type, struct regcache *regcache,
const void *valbuf)
{
int len = TYPE_LENGTH (type);
ULONGEST val;
switch (len)
{
case 1:
case 2:
val = extract_unsigned_integer (valbuf, len);
regcache_cooked_write_unsigned (regcache, E_RET0_REGNUM, val);
break;
case 4:
val = extract_unsigned_integer (valbuf, len);
regcache_cooked_write_unsigned (regcache, E_RET0_REGNUM,
(val >> 16) & 0xffff);
regcache_cooked_write_unsigned (regcache, E_RET1_REGNUM, val & 0xffff);
break;
case 8:
error ("I don't know how to return an 8 byte value.");
break;
}
}
static void
h8300h_store_return_value (struct type *type, struct regcache *regcache,
const void *valbuf)
{
int len = TYPE_LENGTH (type);
ULONGEST val;
switch (len)
{
case 1:
case 2:
case 4:
val = extract_unsigned_integer (valbuf, len);
regcache_cooked_write_unsigned (regcache, E_RET0_REGNUM, val);
break;
case 8:
val = extract_unsigned_integer (valbuf, len);
regcache_cooked_write_unsigned (regcache, E_RET0_REGNUM,
(val >> 32) & 0xffffffff);
regcache_cooked_write_unsigned (regcache, E_RET1_REGNUM,
val & 0xffffffff);
break;
}
}
static enum return_value_convention
h8300_return_value (struct gdbarch *gdbarch, struct type *type,
struct regcache *regcache,
void *readbuf, const void *writebuf)
{
if (h8300_use_struct_convention (type))
return RETURN_VALUE_STRUCT_CONVENTION;
if (writebuf)
h8300_store_return_value (type, regcache, writebuf);
else if (readbuf)
h8300_extract_return_value (type, regcache, readbuf);
return RETURN_VALUE_REGISTER_CONVENTION;
}
static enum return_value_convention
h8300h_return_value (struct gdbarch *gdbarch, struct type *type,
struct regcache *regcache,
void *readbuf, const void *writebuf)
{
if (h8300h_use_struct_convention (type))
{
if (readbuf)
{
ULONGEST addr;
regcache_raw_read_unsigned (regcache, E_R0_REGNUM, &addr);
read_memory (addr, readbuf, TYPE_LENGTH (type));
}
return RETURN_VALUE_ABI_RETURNS_ADDRESS;
}
if (writebuf)
h8300h_store_return_value (type, regcache, writebuf);
else if (readbuf)
h8300h_extract_return_value (type, regcache, readbuf);
return RETURN_VALUE_REGISTER_CONVENTION;
}
static struct cmd_list_element *setmachinelist;
static const char *
h8300_register_name (int regno)
{
static char *register_names[] = {
"r0", "r1", "r2", "r3", "r4", "r5", "r6",
"sp", "", "pc", "cycles", "tick", "inst",
"ccr",
};
if (regno < 0
|| regno >= (sizeof (register_names) / sizeof (*register_names)))
internal_error (__FILE__, __LINE__,
"h8300_register_name: illegal register number %d", regno);
else
return register_names[regno];
}
static const char *
h8300s_register_name (int regno)
{
static char *register_names[] = {
"er0", "er1", "er2", "er3", "er4", "er5", "er6",
"sp", "", "pc", "cycles", "", "tick", "inst",
"mach", "macl",
"ccr", "exr"
};
if (regno < 0
|| regno >= (sizeof (register_names) / sizeof (*register_names)))
internal_error (__FILE__, __LINE__,
"h8300s_register_name: illegal register number %d",
regno);
else
return register_names[regno];
}
static const char *
h8300sx_register_name (int regno)
{
static char *register_names[] = {
"er0", "er1", "er2", "er3", "er4", "er5", "er6",
"sp", "", "pc", "cycles", "", "tick", "inst",
"mach", "macl", "sbr", "vbr",
"ccr", "exr"
};
if (regno < 0
|| regno >= (sizeof (register_names) / sizeof (*register_names)))
internal_error (__FILE__, __LINE__,
"h8300sx_register_name: illegal register number %d",
regno);
else
return register_names[regno];
}
static void
h8300_print_register (struct gdbarch *gdbarch, struct ui_file *file,
struct frame_info *frame, int regno)
{
LONGEST rval;
const char *name = gdbarch_register_name (gdbarch, regno);
if (!name || !*name)
return;
rval = get_frame_register_signed (frame, regno);
fprintf_filtered (file, "%-14s ", name);
if ((regno == E_PSEUDO_CCR_REGNUM) || \
(regno == E_PSEUDO_EXR_REGNUM && is_h8300smode (current_gdbarch)))
{
fprintf_filtered (file, "0x%02x ", (unsigned char) rval);
print_longest (file, 'u', 1, rval);
}
else
{
fprintf_filtered (file, "0x%s ", phex ((ULONGEST) rval, BINWORD));
print_longest (file, 'd', 1, rval);
}
if (regno == E_PSEUDO_CCR_REGNUM)
{
int C, Z, N, V;
unsigned char l = rval & 0xff;
fprintf_filtered (file, "\t");
fprintf_filtered (file, "I-%d ", (l & 0x80) != 0);
fprintf_filtered (file, "UI-%d ", (l & 0x40) != 0);
fprintf_filtered (file, "H-%d ", (l & 0x20) != 0);
fprintf_filtered (file, "U-%d ", (l & 0x10) != 0);
N = (l & 0x8) != 0;
Z = (l & 0x4) != 0;
V = (l & 0x2) != 0;
C = (l & 0x1) != 0;
fprintf_filtered (file, "N-%d ", N);
fprintf_filtered (file, "Z-%d ", Z);
fprintf_filtered (file, "V-%d ", V);
fprintf_filtered (file, "C-%d ", C);
if ((C | Z) == 0)
fprintf_filtered (file, "u> ");
if ((C | Z) == 1)
fprintf_filtered (file, "u<= ");
if ((C == 0))
fprintf_filtered (file, "u>= ");
if (C == 1)
fprintf_filtered (file, "u< ");
if (Z == 0)
fprintf_filtered (file, "!= ");
if (Z == 1)
fprintf_filtered (file, "== ");
if ((N ^ V) == 0)
fprintf_filtered (file, ">= ");
if ((N ^ V) == 1)
fprintf_filtered (file, "< ");
if ((Z | (N ^ V)) == 0)
fprintf_filtered (file, "> ");
if ((Z | (N ^ V)) == 1)
fprintf_filtered (file, "<= ");
}
else if (regno == E_PSEUDO_EXR_REGNUM && is_h8300smode (current_gdbarch))
{
unsigned char l = rval & 0xff;
fprintf_filtered (file, "\t");
fprintf_filtered (file, "T-%d - - - ", (l & 0x80) != 0);
fprintf_filtered (file, "I2-%d ", (l & 4) != 0);
fprintf_filtered (file, "I1-%d ", (l & 2) != 0);
fprintf_filtered (file, "I0-%d", (l & 1) != 0);
}
fprintf_filtered (file, "\n");
}
static void
h8300_print_registers_info (struct gdbarch *gdbarch, struct ui_file *file,
struct frame_info *frame, int regno, int cpregs)
{
if (regno < 0)
{
for (regno = E_R0_REGNUM; regno <= E_SP_REGNUM; ++regno)
h8300_print_register (gdbarch, file, frame, regno);
h8300_print_register (gdbarch, file, frame, E_PSEUDO_CCR_REGNUM);
h8300_print_register (gdbarch, file, frame, E_PC_REGNUM);
if (is_h8300smode (current_gdbarch))
{
h8300_print_register (gdbarch, file, frame, E_PSEUDO_EXR_REGNUM);
if (is_h8300sxmode (current_gdbarch))
{
h8300_print_register (gdbarch, file, frame, E_SBR_REGNUM);
h8300_print_register (gdbarch, file, frame, E_VBR_REGNUM);
}
h8300_print_register (gdbarch, file, frame, E_MACH_REGNUM);
h8300_print_register (gdbarch, file, frame, E_MACL_REGNUM);
h8300_print_register (gdbarch, file, frame, E_CYCLES_REGNUM);
h8300_print_register (gdbarch, file, frame, E_TICKS_REGNUM);
h8300_print_register (gdbarch, file, frame, E_INSTS_REGNUM);
}
else
{
h8300_print_register (gdbarch, file, frame, E_CYCLES_REGNUM);
h8300_print_register (gdbarch, file, frame, E_TICK_REGNUM);
h8300_print_register (gdbarch, file, frame, E_INST_REGNUM);
}
}
else
{
if (regno == E_CCR_REGNUM)
h8300_print_register (gdbarch, file, frame, E_PSEUDO_CCR_REGNUM);
else if (regno == E_PSEUDO_EXR_REGNUM
&& is_h8300smode (current_gdbarch))
h8300_print_register (gdbarch, file, frame, E_PSEUDO_EXR_REGNUM);
else
h8300_print_register (gdbarch, file, frame, regno);
}
}
static struct type *
h8300_register_type (struct gdbarch *gdbarch, int regno)
{
if (regno < 0 || regno >= NUM_REGS + NUM_PSEUDO_REGS)
internal_error (__FILE__, __LINE__,
"h8300_register_type: illegal register number %d", regno);
else
{
switch (regno)
{
case E_PC_REGNUM:
return builtin_type_void_func_ptr;
case E_SP_REGNUM:
case E_FP_REGNUM:
return builtin_type_void_data_ptr;
default:
if (regno == E_PSEUDO_CCR_REGNUM)
return builtin_type_uint8;
else if (regno == E_PSEUDO_EXR_REGNUM)
return builtin_type_uint8;
else if (is_h8300hmode (current_gdbarch))
return builtin_type_int32;
else
return builtin_type_int16;
}
}
}
static void
h8300_pseudo_register_read (struct gdbarch *gdbarch,
struct regcache *regcache, int regno, void *buf)
{
if (regno == E_PSEUDO_CCR_REGNUM)
regcache_raw_read (regcache, E_CCR_REGNUM, buf);
else if (regno == E_PSEUDO_EXR_REGNUM)
regcache_raw_read (regcache, E_EXR_REGNUM, buf);
else
regcache_raw_read (regcache, regno, buf);
}
static void
h8300_pseudo_register_write (struct gdbarch *gdbarch,
struct regcache *regcache, int regno,
const void *buf)
{
if (regno == E_PSEUDO_CCR_REGNUM)
regcache_raw_write (regcache, E_CCR_REGNUM, buf);
else if (regno == E_PSEUDO_EXR_REGNUM)
regcache_raw_write (regcache, E_EXR_REGNUM, buf);
else
regcache_raw_write (regcache, regno, buf);
}
static int
h8300_dbg_reg_to_regnum (int regno)
{
if (regno == E_CCR_REGNUM)
return E_PSEUDO_CCR_REGNUM;
return regno;
}
static int
h8300s_dbg_reg_to_regnum (int regno)
{
if (regno == E_CCR_REGNUM)
return E_PSEUDO_CCR_REGNUM;
if (regno == E_EXR_REGNUM)
return E_PSEUDO_EXR_REGNUM;
return regno;
}
const static unsigned char *
h8300_breakpoint_from_pc (CORE_ADDR *pcptr, int *lenptr)
{
static unsigned char breakpoint[] = { 0x01, 0x80 };
*lenptr = sizeof (breakpoint);
return breakpoint;
}
static void
h8300_print_float_info (struct gdbarch *gdbarch, struct ui_file *file,
struct frame_info *frame, const char *args)
{
fprintf_filtered (file, "\
No floating-point info available for this processor.\n");
}
static struct gdbarch *
h8300_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
{
struct gdbarch_tdep *tdep = NULL;
struct gdbarch *gdbarch;
arches = gdbarch_list_lookup_by_info (arches, &info);
if (arches != NULL)
return arches->gdbarch;
#if 0
tdep = (struct gdbarch_tdep *) xmalloc (sizeof (struct gdbarch_tdep));
#endif
if (info.bfd_arch_info->arch != bfd_arch_h8300)
return NULL;
gdbarch = gdbarch_alloc (&info, 0);
switch (info.bfd_arch_info->mach)
{
case bfd_mach_h8300:
set_gdbarch_num_regs (gdbarch, 13);
set_gdbarch_num_pseudo_regs (gdbarch, 1);
set_gdbarch_ecoff_reg_to_regnum (gdbarch, h8300_dbg_reg_to_regnum);
set_gdbarch_dwarf_reg_to_regnum (gdbarch, h8300_dbg_reg_to_regnum);
set_gdbarch_dwarf2_reg_to_regnum (gdbarch, h8300_dbg_reg_to_regnum);
set_gdbarch_stab_reg_to_regnum (gdbarch, h8300_dbg_reg_to_regnum);
set_gdbarch_register_name (gdbarch, h8300_register_name);
set_gdbarch_ptr_bit (gdbarch, 2 * TARGET_CHAR_BIT);
set_gdbarch_addr_bit (gdbarch, 2 * TARGET_CHAR_BIT);
set_gdbarch_return_value (gdbarch, h8300_return_value);
set_gdbarch_print_insn (gdbarch, print_insn_h8300);
break;
case bfd_mach_h8300h:
case bfd_mach_h8300hn:
set_gdbarch_num_regs (gdbarch, 13);
set_gdbarch_num_pseudo_regs (gdbarch, 1);
set_gdbarch_ecoff_reg_to_regnum (gdbarch, h8300_dbg_reg_to_regnum);
set_gdbarch_dwarf_reg_to_regnum (gdbarch, h8300_dbg_reg_to_regnum);
set_gdbarch_dwarf2_reg_to_regnum (gdbarch, h8300_dbg_reg_to_regnum);
set_gdbarch_stab_reg_to_regnum (gdbarch, h8300_dbg_reg_to_regnum);
set_gdbarch_register_name (gdbarch, h8300_register_name);
if (info.bfd_arch_info->mach != bfd_mach_h8300hn)
{
set_gdbarch_ptr_bit (gdbarch, 4 * TARGET_CHAR_BIT);
set_gdbarch_addr_bit (gdbarch, 4 * TARGET_CHAR_BIT);
}
else
{
set_gdbarch_ptr_bit (gdbarch, 2 * TARGET_CHAR_BIT);
set_gdbarch_addr_bit (gdbarch, 2 * TARGET_CHAR_BIT);
}
set_gdbarch_return_value (gdbarch, h8300h_return_value);
set_gdbarch_print_insn (gdbarch, print_insn_h8300h);
break;
case bfd_mach_h8300s:
case bfd_mach_h8300sn:
set_gdbarch_num_regs (gdbarch, 16);
set_gdbarch_num_pseudo_regs (gdbarch, 2);
set_gdbarch_ecoff_reg_to_regnum (gdbarch, h8300s_dbg_reg_to_regnum);
set_gdbarch_dwarf_reg_to_regnum (gdbarch, h8300s_dbg_reg_to_regnum);
set_gdbarch_dwarf2_reg_to_regnum (gdbarch, h8300s_dbg_reg_to_regnum);
set_gdbarch_stab_reg_to_regnum (gdbarch, h8300s_dbg_reg_to_regnum);
set_gdbarch_register_name (gdbarch, h8300s_register_name);
if (info.bfd_arch_info->mach != bfd_mach_h8300sn)
{
set_gdbarch_ptr_bit (gdbarch, 4 * TARGET_CHAR_BIT);
set_gdbarch_addr_bit (gdbarch, 4 * TARGET_CHAR_BIT);
}
else
{
set_gdbarch_ptr_bit (gdbarch, 2 * TARGET_CHAR_BIT);
set_gdbarch_addr_bit (gdbarch, 2 * TARGET_CHAR_BIT);
}
set_gdbarch_return_value (gdbarch, h8300h_return_value);
set_gdbarch_print_insn (gdbarch, print_insn_h8300s);
break;
case bfd_mach_h8300sx:
case bfd_mach_h8300sxn:
set_gdbarch_num_regs (gdbarch, 18);
set_gdbarch_num_pseudo_regs (gdbarch, 2);
set_gdbarch_ecoff_reg_to_regnum (gdbarch, h8300s_dbg_reg_to_regnum);
set_gdbarch_dwarf_reg_to_regnum (gdbarch, h8300s_dbg_reg_to_regnum);
set_gdbarch_dwarf2_reg_to_regnum (gdbarch, h8300s_dbg_reg_to_regnum);
set_gdbarch_stab_reg_to_regnum (gdbarch, h8300s_dbg_reg_to_regnum);
set_gdbarch_register_name (gdbarch, h8300sx_register_name);
if (info.bfd_arch_info->mach != bfd_mach_h8300sxn)
{
set_gdbarch_ptr_bit (gdbarch, 4 * TARGET_CHAR_BIT);
set_gdbarch_addr_bit (gdbarch, 4 * TARGET_CHAR_BIT);
}
else
{
set_gdbarch_ptr_bit (gdbarch, 2 * TARGET_CHAR_BIT);
set_gdbarch_addr_bit (gdbarch, 2 * TARGET_CHAR_BIT);
}
set_gdbarch_return_value (gdbarch, h8300h_return_value);
set_gdbarch_print_insn (gdbarch, print_insn_h8300s);
break;
}
set_gdbarch_pseudo_register_read (gdbarch, h8300_pseudo_register_read);
set_gdbarch_pseudo_register_write (gdbarch, h8300_pseudo_register_write);
set_gdbarch_sp_regnum (gdbarch, E_SP_REGNUM);
set_gdbarch_pc_regnum (gdbarch, E_PC_REGNUM);
set_gdbarch_register_type (gdbarch, h8300_register_type);
set_gdbarch_print_registers_info (gdbarch, h8300_print_registers_info);
set_gdbarch_print_float_info (gdbarch, h8300_print_float_info);
set_gdbarch_skip_prologue (gdbarch, h8300_skip_prologue);
set_gdbarch_unwind_pc (gdbarch, h8300_unwind_pc);
set_gdbarch_unwind_sp (gdbarch, h8300_unwind_sp);
set_gdbarch_unwind_dummy_id (gdbarch, h8300_unwind_dummy_id);
frame_base_set_default (gdbarch, &h8300_frame_base);
set_gdbarch_inner_than (gdbarch, core_addr_lessthan);
set_gdbarch_breakpoint_from_pc (gdbarch, h8300_breakpoint_from_pc);
set_gdbarch_push_dummy_call (gdbarch, h8300_push_dummy_call);
set_gdbarch_char_signed (gdbarch, 0);
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_double_bit (gdbarch, 4 * TARGET_CHAR_BIT);
set_gdbarch_long_double_bit (gdbarch, 4 * TARGET_CHAR_BIT);
set_gdbarch_believe_pcc_promotion (gdbarch, 1);
frame_unwind_append_sniffer (gdbarch, dwarf2_frame_sniffer);
frame_unwind_append_sniffer (gdbarch, h8300_frame_sniffer);
return gdbarch;
}
extern initialize_file_ftype _initialize_h8300_tdep;
void
_initialize_h8300_tdep (void)
{
register_gdbarch_init (bfd_arch_h8300, h8300_gdbarch_init);
}
static int
is_h8300hmode (struct gdbarch *gdbarch)
{
return gdbarch_bfd_arch_info (gdbarch)->mach == bfd_mach_h8300sx
|| gdbarch_bfd_arch_info (gdbarch)->mach == bfd_mach_h8300sxn
|| gdbarch_bfd_arch_info (gdbarch)->mach == bfd_mach_h8300s
|| gdbarch_bfd_arch_info (gdbarch)->mach == bfd_mach_h8300sn
|| gdbarch_bfd_arch_info (gdbarch)->mach == bfd_mach_h8300h
|| gdbarch_bfd_arch_info (gdbarch)->mach == bfd_mach_h8300hn;
}
static int
is_h8300smode (struct gdbarch *gdbarch)
{
return gdbarch_bfd_arch_info (gdbarch)->mach == bfd_mach_h8300sx
|| gdbarch_bfd_arch_info (gdbarch)->mach == bfd_mach_h8300sxn
|| gdbarch_bfd_arch_info (gdbarch)->mach == bfd_mach_h8300s
|| gdbarch_bfd_arch_info (gdbarch)->mach == bfd_mach_h8300sn;
}
static int
is_h8300sxmode (struct gdbarch *gdbarch)
{
return gdbarch_bfd_arch_info (gdbarch)->mach == bfd_mach_h8300sx
|| gdbarch_bfd_arch_info (gdbarch)->mach == bfd_mach_h8300sxn;
}
static int
is_h8300_normal_mode (struct gdbarch *gdbarch)
{
return gdbarch_bfd_arch_info (gdbarch)->mach == bfd_mach_h8300sxn
|| gdbarch_bfd_arch_info (gdbarch)->mach == bfd_mach_h8300sn
|| gdbarch_bfd_arch_info (gdbarch)->mach == bfd_mach_h8300hn;
}