#include "defs.h"
#include "dwarf2-frame.h"
#include "frame.h"
#include "frame-base.h"
#include "frame-unwind.h"
#include "floatformat.h"
#include "symtab.h"
#include "gdbcore.h"
#include "value.h"
#include "gdb_string.h"
#include "gdb_assert.h"
#include "inferior.h"
#include "regcache.h"
#include "arch-utils.h"
#include "osabi.h"
#include "dis-asm.h"
#include "m68k-tdep.h"
#define P_LINKL_FP 0x480e
#define P_LINKW_FP 0x4e56
#define P_PEA_FP 0x4856
#define P_MOVEAL_SP_FP 0x2c4f
#define P_ADDAW_SP 0xdefc
#define P_ADDAL_SP 0xdffc
#define P_SUBQW_SP 0x514f
#define P_SUBQL_SP 0x518f
#define P_LEA_SP_SP 0x4fef
#define P_LEA_PC_A5 0x4bfb0170
#define P_FMOVEMX_SP 0xf227
#define P_MOVEL_SP 0x2f00
#define P_MOVEML_SP 0x48e7
#define REGISTER_BYTES_FP (16*4 + 8 + 8*12 + 3*4)
#define REGISTER_BYTES_NOFP (16*4 + 8)
#define SP_ARG0 (1 * 4)
#if !defined (BPT_VECTOR)
#define BPT_VECTOR 0xf
#endif
static const gdb_byte *
m68k_local_breakpoint_from_pc (CORE_ADDR *pcptr, int *lenptr)
{
static gdb_byte break_insn[] = {0x4e, (0x40 | BPT_VECTOR)};
*lenptr = sizeof (break_insn);
return break_insn;
}
static int
m68k_register_bytes_ok (long numbytes)
{
return ((numbytes == REGISTER_BYTES_FP)
|| (numbytes == REGISTER_BYTES_NOFP));
}
static struct type *
m68k_register_type (struct gdbarch *gdbarch, int regnum)
{
if (regnum >= FP0_REGNUM && regnum <= FP0_REGNUM + 7)
return builtin_type_m68881_ext;
if (regnum == M68K_FPI_REGNUM || regnum == PC_REGNUM)
return builtin_type_void_func_ptr;
if (regnum == M68K_FPC_REGNUM || regnum == M68K_FPS_REGNUM
|| regnum == PS_REGNUM)
return builtin_type_int32;
if (regnum >= M68K_A0_REGNUM && regnum <= M68K_A0_REGNUM + 7)
return builtin_type_void_data_ptr;
return builtin_type_int32;
}
static const char *
m68k_register_name (int regnum)
{
static char *register_names[] = {
"d0", "d1", "d2", "d3", "d4", "d5", "d6", "d7",
"a0", "a1", "a2", "a3", "a4", "a5", "fp", "sp",
"ps", "pc",
"fp0", "fp1", "fp2", "fp3", "fp4", "fp5", "fp6", "fp7",
"fpcontrol", "fpstatus", "fpiaddr", "fpcode", "fpflags"
};
if (regnum < 0 ||
regnum >= sizeof (register_names) / sizeof (register_names[0]))
internal_error (__FILE__, __LINE__,
_("m68k_register_name: illegal register number %d"), regnum);
else
return register_names[regnum];
}
static int
m68k_convert_register_p (int regnum, struct type *type)
{
return (regnum >= M68K_FP0_REGNUM && regnum <= M68K_FP0_REGNUM + 7);
}
static void
m68k_register_to_value (struct frame_info *frame, int regnum,
struct type *type, gdb_byte *to)
{
gdb_byte from[M68K_MAX_REGISTER_SIZE];
if (TYPE_CODE (type) != TYPE_CODE_FLT)
{
warning (_("Cannot convert floating-point register value "
"to non-floating-point type."));
return;
}
get_frame_register (frame, regnum, from);
convert_typed_floating (from, builtin_type_m68881_ext, to, type);
}
static void
m68k_value_to_register (struct frame_info *frame, int regnum,
struct type *type, const gdb_byte *from)
{
gdb_byte to[M68K_MAX_REGISTER_SIZE];
if (TYPE_CODE (type) != TYPE_CODE_FLT)
{
warning (_("Cannot convert non-floating-point type "
"to floating-point register value."));
return;
}
convert_typed_floating (from, type, to, builtin_type_m68881_ext);
put_frame_register (frame, regnum, to);
}
static void
m68k_extract_return_value (struct type *type, struct regcache *regcache,
gdb_byte *valbuf)
{
int len = TYPE_LENGTH (type);
gdb_byte buf[M68K_MAX_REGISTER_SIZE];
if (len <= 4)
{
regcache_raw_read (regcache, M68K_D0_REGNUM, buf);
memcpy (valbuf, buf + (4 - len), len);
}
else if (len <= 8)
{
regcache_raw_read (regcache, M68K_D0_REGNUM, buf);
memcpy (valbuf, buf + (8 - len), len - 4);
regcache_raw_read (regcache, M68K_D1_REGNUM, valbuf + (len - 4));
}
else
internal_error (__FILE__, __LINE__,
_("Cannot extract return value of %d bytes long."), len);
}
static void
m68k_svr4_extract_return_value (struct type *type, struct regcache *regcache,
gdb_byte *valbuf)
{
int len = TYPE_LENGTH (type);
gdb_byte buf[M68K_MAX_REGISTER_SIZE];
if (TYPE_CODE (type) == TYPE_CODE_FLT)
{
regcache_raw_read (regcache, M68K_FP0_REGNUM, buf);
convert_typed_floating (buf, builtin_type_m68881_ext, valbuf, type);
}
else if (TYPE_CODE (type) == TYPE_CODE_PTR && len == 4)
regcache_raw_read (regcache, M68K_A0_REGNUM, valbuf);
else
m68k_extract_return_value (type, regcache, valbuf);
}
static void
m68k_store_return_value (struct type *type, struct regcache *regcache,
const gdb_byte *valbuf)
{
int len = TYPE_LENGTH (type);
if (len <= 4)
regcache_raw_write_part (regcache, M68K_D0_REGNUM, 4 - len, len, valbuf);
else if (len <= 8)
{
regcache_raw_write_part (regcache, M68K_D0_REGNUM, 8 - len,
len - 4, valbuf);
regcache_raw_write (regcache, M68K_D1_REGNUM, valbuf + (len - 4));
}
else
internal_error (__FILE__, __LINE__,
_("Cannot store return value of %d bytes long."), len);
}
static void
m68k_svr4_store_return_value (struct type *type, struct regcache *regcache,
const gdb_byte *valbuf)
{
int len = TYPE_LENGTH (type);
if (TYPE_CODE (type) == TYPE_CODE_FLT)
{
gdb_byte buf[M68K_MAX_REGISTER_SIZE];
convert_typed_floating (valbuf, type, buf, builtin_type_m68881_ext);
regcache_raw_write (regcache, M68K_FP0_REGNUM, buf);
}
else if (TYPE_CODE (type) == TYPE_CODE_PTR && len == 4)
{
regcache_raw_write (regcache, M68K_A0_REGNUM, valbuf);
regcache_raw_write (regcache, M68K_D0_REGNUM, valbuf);
}
else
m68k_store_return_value (type, regcache, valbuf);
}
static int
m68k_reg_struct_return_p (struct gdbarch *gdbarch, struct type *type)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
enum type_code code = TYPE_CODE (type);
int len = TYPE_LENGTH (type);
gdb_assert (code == TYPE_CODE_STRUCT || code == TYPE_CODE_UNION);
if (tdep->struct_return == pcc_struct_return)
return 0;
return (len == 1 || len == 2 || len == 4 || len == 8);
}
static enum return_value_convention
m68k_return_value (struct gdbarch *gdbarch, struct type *type,
struct regcache *regcache, gdb_byte *readbuf,
const gdb_byte *writebuf)
{
enum type_code code = TYPE_CODE (type);
if ((code == TYPE_CODE_STRUCT || code == TYPE_CODE_UNION)
&& !m68k_reg_struct_return_p (gdbarch, type))
return RETURN_VALUE_STRUCT_CONVENTION;
if (code == TYPE_CODE_FLT && TYPE_LENGTH (type) == 12)
return RETURN_VALUE_STRUCT_CONVENTION;
if (readbuf)
m68k_extract_return_value (type, regcache, readbuf);
if (writebuf)
m68k_store_return_value (type, regcache, writebuf);
return RETURN_VALUE_REGISTER_CONVENTION;
}
static enum return_value_convention
m68k_svr4_return_value (struct gdbarch *gdbarch, struct type *type,
struct regcache *regcache, gdb_byte *readbuf,
const gdb_byte *writebuf)
{
enum type_code code = TYPE_CODE (type);
if ((code == TYPE_CODE_STRUCT || code == TYPE_CODE_UNION)
&& !m68k_reg_struct_return_p (gdbarch, type))
{
if (readbuf)
{
ULONGEST addr;
regcache_raw_read_unsigned (regcache, M68K_A0_REGNUM, &addr);
read_memory (addr, readbuf, TYPE_LENGTH (type));
}
return RETURN_VALUE_ABI_RETURNS_ADDRESS;
}
if (code == TYPE_CODE_STRUCT && TYPE_NFIELDS (type) == 1)
{
type = check_typedef (TYPE_FIELD_TYPE (type, 0));
return m68k_svr4_return_value (gdbarch, type, regcache,
readbuf, writebuf);
}
if (readbuf)
m68k_svr4_extract_return_value (type, regcache, readbuf);
if (writebuf)
m68k_svr4_store_return_value (type, regcache, writebuf);
return RETURN_VALUE_REGISTER_CONVENTION;
}
static CORE_ADDR
m68k_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)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
gdb_byte buf[4];
int i;
for (i = nargs - 1; i >= 0; i--)
{
struct type *value_type = value_enclosing_type (args[i]);
int len = TYPE_LENGTH (value_type);
int container_len = (len + 3) & ~3;
int offset;
if ((TYPE_CODE (value_type) == TYPE_CODE_STRUCT
|| TYPE_CODE (value_type) == TYPE_CODE_UNION
|| TYPE_CODE (value_type) == TYPE_CODE_ARRAY)
&& len > 4)
offset = 0;
else
offset = container_len - len;
sp -= container_len;
write_memory (sp + offset, value_contents_all (args[i]), len);
}
if (struct_return)
{
store_unsigned_integer (buf, 4, struct_addr);
regcache_cooked_write (regcache, tdep->struct_value_regnum, buf);
}
sp -= 4;
store_unsigned_integer (buf, 4, bp_addr);
write_memory (sp, buf, 4);
store_unsigned_integer (buf, 4, sp);
regcache_cooked_write (regcache, M68K_SP_REGNUM, buf);
regcache_cooked_write (regcache, M68K_FP_REGNUM, buf);
return sp + 8;
}
struct m68k_frame_cache
{
CORE_ADDR base;
CORE_ADDR sp_offset;
CORE_ADDR pc;
CORE_ADDR saved_regs[M68K_NUM_REGS];
CORE_ADDR saved_sp;
long locals;
};
static struct m68k_frame_cache *
m68k_alloc_frame_cache (void)
{
struct m68k_frame_cache *cache;
int i;
cache = FRAME_OBSTACK_ZALLOC (struct m68k_frame_cache);
cache->base = 0;
cache->sp_offset = -4;
cache->pc = 0;
for (i = 0; i < M68K_NUM_REGS; i++)
cache->saved_regs[i] = -1;
cache->locals = -1;
return cache;
}
static CORE_ADDR
m68k_analyze_frame_setup (CORE_ADDR pc, CORE_ADDR current_pc,
struct m68k_frame_cache *cache)
{
int op;
if (pc >= current_pc)
return current_pc;
op = read_memory_unsigned_integer (pc, 2);
if (op == P_LINKW_FP || op == P_LINKL_FP || op == P_PEA_FP)
{
cache->saved_regs[M68K_FP_REGNUM] = 0;
cache->sp_offset += 4;
if (op == P_LINKW_FP)
{
cache->locals = -read_memory_integer (pc + 2, 2);
if (pc + 4 < current_pc && cache->locals == 0)
{
op = read_memory_unsigned_integer (pc + 4, 2);
if (op == P_ADDAL_SP)
{
cache->locals = read_memory_integer (pc + 6, 4);
return pc + 10;
}
}
return pc + 4;
}
else if (op == P_LINKL_FP)
{
cache->locals = -read_memory_integer (pc + 2, 4);
return pc + 6;
}
else
{
cache->locals = 0;
if (pc + 2 < current_pc)
{
op = read_memory_unsigned_integer (pc + 2, 2);
if (op == P_MOVEAL_SP_FP)
{
return pc + 4;
}
}
return pc + 2;
}
}
else if ((op & 0170777) == P_SUBQW_SP || (op & 0170777) == P_SUBQL_SP)
{
cache->locals = (op & 07000) == 0 ? 8 : (op & 07000) >> 9;
if (pc + 2 < current_pc)
{
op = read_memory_unsigned_integer (pc + 2, 2);
if ((op & 0170777) == P_SUBQW_SP || (op & 0170777) == P_SUBQL_SP)
{
cache->locals += (op & 07000) == 0 ? 8 : (op & 07000) >> 9;
return pc + 4;
}
}
return pc + 2;
}
else if (op == P_ADDAW_SP || op == P_LEA_SP_SP)
{
cache->locals = -read_memory_integer (pc + 2, 2);
return pc + 4;
}
else if (op == P_ADDAL_SP)
{
cache->locals = -read_memory_integer (pc + 2, 4);
return pc + 6;
}
return pc;
}
static CORE_ADDR
m68k_analyze_register_saves (CORE_ADDR pc, CORE_ADDR current_pc,
struct m68k_frame_cache *cache)
{
if (cache->locals >= 0)
{
CORE_ADDR offset;
int op;
int i, mask, regno;
offset = -4 - cache->locals;
while (pc < current_pc)
{
op = read_memory_unsigned_integer (pc, 2);
if (op == P_FMOVEMX_SP)
{
op = read_memory_unsigned_integer (pc + 2, 2);
if ((op & 0xff00) == 0xe000)
{
mask = op & 0xff;
for (i = 0; i < 16; i++, mask >>= 1)
{
if (mask & 1)
{
cache->saved_regs[i + M68K_FP0_REGNUM] = offset;
offset -= 12;
}
}
pc += 4;
}
else
break;
}
else if ((op & 0170677) == P_MOVEL_SP)
{
regno = ((op & 07000) >> 9) | ((op & 0100) >> 3);
cache->saved_regs[regno] = offset;
offset -= 4;
pc += 2;
}
else if (op == P_MOVEML_SP)
{
mask = read_memory_unsigned_integer (pc + 2, 2);
for (i = 0; i < 16; i++, mask >>= 1)
{
if (mask & 1)
{
cache->saved_regs[15 - i] = offset;
offset -= 4;
}
}
pc += 4;
}
else
break;
}
}
return pc;
}
static CORE_ADDR
m68k_analyze_prologue (CORE_ADDR pc, CORE_ADDR current_pc,
struct m68k_frame_cache *cache)
{
unsigned int op;
pc = m68k_analyze_frame_setup (pc, current_pc, cache);
pc = m68k_analyze_register_saves (pc, current_pc, cache);
if (pc >= current_pc)
return current_pc;
op = read_memory_unsigned_integer (pc, 4);
if (op == P_LEA_PC_A5)
{
return pc + 6;
}
return pc;
}
static CORE_ADDR
m68k_skip_prologue (CORE_ADDR start_pc)
{
struct m68k_frame_cache cache;
CORE_ADDR pc;
int op;
cache.locals = -1;
pc = m68k_analyze_prologue (start_pc, (CORE_ADDR) -1, &cache);
if (cache.locals < 0)
return start_pc;
return pc;
}
static CORE_ADDR
m68k_unwind_pc (struct gdbarch *gdbarch, struct frame_info *next_frame)
{
gdb_byte buf[8];
frame_unwind_register (next_frame, PC_REGNUM, buf);
return extract_typed_address (buf, builtin_type_void_func_ptr);
}
static struct m68k_frame_cache *
m68k_frame_cache (struct frame_info *next_frame, void **this_cache)
{
struct m68k_frame_cache *cache;
gdb_byte buf[4];
int i;
if (*this_cache)
return *this_cache;
cache = m68k_alloc_frame_cache ();
*this_cache = cache;
frame_unwind_register (next_frame, M68K_FP_REGNUM, buf);
cache->base = extract_unsigned_integer (buf, 4);
if (cache->base == 0)
return cache;
cache->saved_regs[M68K_PC_REGNUM] = 4;
cache->pc = frame_func_unwind (next_frame);
if (cache->pc != 0)
m68k_analyze_prologue (cache->pc, frame_pc_unwind (next_frame), cache);
if (cache->locals < 0)
{
frame_unwind_register (next_frame, M68K_SP_REGNUM, buf);
cache->base = extract_unsigned_integer (buf, 4) + cache->sp_offset;
}
cache->saved_sp = cache->base + 8;
for (i = 0; i < M68K_NUM_REGS; i++)
if (cache->saved_regs[i] != -1)
cache->saved_regs[i] += cache->base;
return cache;
}
static void
m68k_frame_this_id (struct frame_info *next_frame, void **this_cache,
struct frame_id *this_id)
{
struct m68k_frame_cache *cache = m68k_frame_cache (next_frame, this_cache);
if (cache->base == 0)
return;
*this_id = frame_id_build (cache->base + 8, cache->pc);
}
static void
m68k_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, gdb_byte *valuep)
{
struct m68k_frame_cache *cache = m68k_frame_cache (next_frame, this_cache);
gdb_assert (regnum >= 0);
if (regnum == M68K_SP_REGNUM && cache->saved_sp)
{
*optimizedp = opt_okay;
*lvalp = not_lval;
*addrp = 0;
*realnump = -1;
if (valuep)
{
store_unsigned_integer (valuep, 4, cache->saved_sp);
}
return;
}
if (regnum < M68K_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;
}
*optimizedp = opt_okay;
*lvalp = lval_register;
*addrp = 0;
*realnump = regnum;
if (valuep)
frame_unwind_register (next_frame, (*realnump), valuep);
}
static const struct frame_unwind m68k_frame_unwind =
{
NORMAL_FRAME,
m68k_frame_this_id,
m68k_frame_prev_register
};
static const struct frame_unwind *
m68k_frame_sniffer (struct frame_info *next_frame)
{
return &m68k_frame_unwind;
}
static CORE_ADDR
m68k_frame_base_address (struct frame_info *next_frame, void **this_cache)
{
struct m68k_frame_cache *cache = m68k_frame_cache (next_frame, this_cache);
return cache->base;
}
static const struct frame_base m68k_frame_base =
{
&m68k_frame_unwind,
m68k_frame_base_address,
m68k_frame_base_address,
m68k_frame_base_address
};
static struct frame_id
m68k_unwind_dummy_id (struct gdbarch *gdbarch, struct frame_info *next_frame)
{
gdb_byte buf[4];
CORE_ADDR fp;
frame_unwind_register (next_frame, M68K_FP_REGNUM, buf);
fp = extract_unsigned_integer (buf, 4);
return frame_id_build (fp + 8, frame_pc_unwind (next_frame));
}
#ifdef USE_PROC_FS
#include <sys/procfs.h>
#include "gregset.h"
#if !defined (R_PS) && defined (R_SR)
#define R_PS R_SR
#endif
void
supply_gregset (gregset_t *gregsetp)
{
int regi;
greg_t *regp = (greg_t *) gregsetp;
for (regi = 0; regi < R_PC; regi++)
{
regcache_raw_supply (current_regcache, regi, (char *) (regp + regi));
}
regcache_raw_supply (current_regcache, PS_REGNUM, (char *) (regp + R_PS));
regcache_raw_supply (current_regcache, PC_REGNUM, (char *) (regp + R_PC));
}
void
fill_gregset (gregset_t *gregsetp, int regno)
{
int regi;
greg_t *regp = (greg_t *) gregsetp;
for (regi = 0; regi < R_PC; regi++)
{
if (regno == -1 || regno == regi)
regcache_raw_collect (current_regcache, regi, regp + regi);
}
if (regno == -1 || regno == PS_REGNUM)
regcache_raw_collect (current_regcache, PS_REGNUM, regp + R_PS);
if (regno == -1 || regno == PC_REGNUM)
regcache_raw_collect (current_regcache, PC_REGNUM, regp + R_PC);
}
#if defined (FP0_REGNUM)
void
supply_fpregset (fpregset_t *fpregsetp)
{
int regi;
char *from;
for (regi = FP0_REGNUM; regi < M68K_FPC_REGNUM; regi++)
{
from = (char *) &(fpregsetp->f_fpregs[regi - FP0_REGNUM][0]);
regcache_raw_supply (current_regcache, regi, from);
}
regcache_raw_supply (current_regcache, M68K_FPC_REGNUM,
(char *) &(fpregsetp->f_pcr));
regcache_raw_supply (current_regcache, M68K_FPS_REGNUM,
(char *) &(fpregsetp->f_psr));
regcache_raw_supply (current_regcache, M68K_FPI_REGNUM,
(char *) &(fpregsetp->f_fpiaddr));
}
void
fill_fpregset (fpregset_t *fpregsetp, int regno)
{
int regi;
for (regi = FP0_REGNUM; regi < M68K_FPC_REGNUM; regi++)
{
if (regno == -1 || regno == regi)
regcache_raw_collect (current_regcache, regi,
&fpregsetp->f_fpregs[regi - FP0_REGNUM][0]);
}
if (regno == -1 || regno == M68K_FPC_REGNUM)
regcache_raw_collect (current_regcache, M68K_FPC_REGNUM,
&fpregsetp->f_pcr);
if (regno == -1 || regno == M68K_FPS_REGNUM)
regcache_raw_collect (current_regcache, M68K_FPS_REGNUM,
&fpregsetp->f_psr);
if (regno == -1 || regno == M68K_FPI_REGNUM)
regcache_raw_collect (current_regcache, M68K_FPI_REGNUM,
&fpregsetp->f_fpiaddr);
}
#endif
#endif
static int
m68k_get_longjmp_target (CORE_ADDR *pc)
{
gdb_byte *buf;
CORE_ADDR sp, jb_addr;
struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
if (tdep->jb_pc < 0)
{
internal_error (__FILE__, __LINE__,
_("m68k_get_longjmp_target: not implemented"));
return 0;
}
buf = alloca (TARGET_PTR_BIT / TARGET_CHAR_BIT);
sp = read_register (SP_REGNUM);
if (target_read_memory (sp + SP_ARG0,
buf, TARGET_PTR_BIT / TARGET_CHAR_BIT))
return 0;
jb_addr = extract_unsigned_integer (buf, TARGET_PTR_BIT / TARGET_CHAR_BIT);
if (target_read_memory (jb_addr + tdep->jb_pc * tdep->jb_elt_size, buf,
TARGET_PTR_BIT / TARGET_CHAR_BIT))
return 0;
*pc = extract_unsigned_integer (buf, TARGET_PTR_BIT / TARGET_CHAR_BIT);
return 1;
}
void
m68k_svr4_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
set_gdbarch_return_value (gdbarch, m68k_svr4_return_value);
tdep->struct_value_regnum = M68K_A0_REGNUM;
}
static struct gdbarch *
m68k_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);
tdep = xmalloc (sizeof (struct gdbarch_tdep));
gdbarch = gdbarch_alloc (&info, tdep);
set_gdbarch_long_double_format (gdbarch, &floatformat_m68881_ext);
set_gdbarch_long_double_bit (gdbarch, 96);
set_gdbarch_skip_prologue (gdbarch, m68k_skip_prologue);
set_gdbarch_breakpoint_from_pc (gdbarch, m68k_local_breakpoint_from_pc);
set_gdbarch_inner_than (gdbarch, core_addr_lessthan);
set_gdbarch_believe_pcc_promotion (gdbarch, 1);
set_gdbarch_decr_pc_after_break (gdbarch, 2);
set_gdbarch_frame_args_skip (gdbarch, 8);
set_gdbarch_register_type (gdbarch, m68k_register_type);
set_gdbarch_register_name (gdbarch, m68k_register_name);
set_gdbarch_num_regs (gdbarch, 29);
set_gdbarch_register_bytes_ok (gdbarch, m68k_register_bytes_ok);
set_gdbarch_sp_regnum (gdbarch, M68K_SP_REGNUM);
set_gdbarch_pc_regnum (gdbarch, M68K_PC_REGNUM);
set_gdbarch_ps_regnum (gdbarch, M68K_PS_REGNUM);
set_gdbarch_fp0_regnum (gdbarch, M68K_FP0_REGNUM);
set_gdbarch_convert_register_p (gdbarch, m68k_convert_register_p);
set_gdbarch_register_to_value (gdbarch, m68k_register_to_value);
set_gdbarch_value_to_register (gdbarch, m68k_value_to_register);
set_gdbarch_push_dummy_call (gdbarch, m68k_push_dummy_call);
set_gdbarch_return_value (gdbarch, m68k_return_value);
set_gdbarch_print_insn (gdbarch, print_insn_m68k);
#if defined JB_PC && defined JB_ELEMENT_SIZE
tdep->jb_pc = JB_PC;
tdep->jb_elt_size = JB_ELEMENT_SIZE;
#else
tdep->jb_pc = -1;
#endif
tdep->struct_value_regnum = M68K_A1_REGNUM;
tdep->struct_return = reg_struct_return;
set_gdbarch_unwind_dummy_id (gdbarch, m68k_unwind_dummy_id);
set_gdbarch_unwind_pc (gdbarch, m68k_unwind_pc);
frame_unwind_append_sniffer (gdbarch, dwarf2_frame_sniffer);
frame_base_set_default (gdbarch, &m68k_frame_base);
gdbarch_init_osabi (info, gdbarch);
if (tdep->jb_pc >= 0)
set_gdbarch_get_longjmp_target (gdbarch, m68k_get_longjmp_target);
frame_unwind_append_sniffer (gdbarch, m68k_frame_sniffer);
return gdbarch;
}
static void
m68k_dump_tdep (struct gdbarch *current_gdbarch, struct ui_file *file)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
if (tdep == NULL)
return;
}
extern initialize_file_ftype _initialize_m68k_tdep;
void
_initialize_m68k_tdep (void)
{
gdbarch_register (bfd_arch_m68k, m68k_gdbarch_init, m68k_dump_tdep);
}