#include "defs.h"
#include "dwarf2-frame.h"
#include "frame.h"
#include "frame-base.h"
#include "frame-unwind.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
#if !defined (REMOTE_BPT_VECTOR)
#define REMOTE_BPT_VECTOR 1
#endif
static const unsigned char *
m68k_local_breakpoint_from_pc (CORE_ADDR *pcptr, int *lenptr)
{
static unsigned char 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 void
m68k_extract_return_value (struct type *type, struct regcache *regcache,
void *valbuf)
{
int len = TYPE_LENGTH (type);
char buf[M68K_MAX_REGISTER_SIZE];
if (TYPE_CODE (type) == TYPE_CODE_STRUCT
&& TYPE_NFIELDS (type) == 1)
{
m68k_extract_return_value (TYPE_FIELD_TYPE (type, 0), regcache, valbuf);
return;
}
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,
(char *) valbuf + (len - 4));
}
else
internal_error (__FILE__, __LINE__,
"Cannot extract return value of %d bytes long.", len);
}
static void
m68k_store_return_value (struct type *type, struct regcache *regcache,
const void *valbuf)
{
int len = TYPE_LENGTH (type);
if (TYPE_CODE (type) == TYPE_CODE_STRUCT
&& TYPE_NFIELDS (type) == 1)
{
m68k_store_return_value (TYPE_FIELD_TYPE (type, 0), regcache, valbuf);
return;
}
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_D1_REGNUM, 8 - len,
len - 4, valbuf);
regcache_raw_write (regcache, M68K_D0_REGNUM,
(char *) valbuf + (len - 4));
}
else
internal_error (__FILE__, __LINE__,
"Cannot store return value of %d bytes long.", len);
}
static CORE_ADDR
m68k_extract_struct_value_address (struct regcache *regcache)
{
char buf[4];
regcache_cooked_read (regcache, M68K_D0_REGNUM, buf);
return extract_unsigned_integer (buf, 4);
}
static int
m68k_use_struct_convention (int gcc_p, struct type *type)
{
enum struct_return struct_return;
struct_return = gdbarch_tdep (current_gdbarch)->struct_return;
return generic_use_struct_convention (struct_return == reg_struct_return,
type);
}
static int
m68k_frameless_function_invocation (struct frame_info *fi)
{
if (get_frame_type (fi) == SIGTRAMP_FRAME)
return 0;
else
return legacy_frameless_look_for_prologue (fi);
}
int
delta68_in_sigtramp (CORE_ADDR pc, char *name)
{
if (name != NULL)
return strcmp (name, "_sigcode") == 0;
else
return 0;
}
CORE_ADDR
delta68_frame_args_address (struct frame_info *frame_info)
{
if (get_frame_type (frame_info) == SIGTRAMP_FRAME)
return get_frame_base (frame_info) + 12;
else if (legacy_frameless_look_for_prologue (frame_info))
{
if (get_next_frame (frame_info) && (get_frame_type (get_next_frame (frame_info)) == SIGTRAMP_FRAME))
return get_frame_base (get_next_frame (frame_info)) + 16;
else
return get_frame_base (frame_info) + 4;
}
else
return get_frame_base (frame_info);
}
CORE_ADDR
delta68_frame_saved_pc (struct frame_info *frame_info)
{
return read_memory_unsigned_integer (delta68_frame_args_address (frame_info)
+ 4, 4);
}
int
delta68_frame_num_args (struct frame_info *fi)
{
int val;
CORE_ADDR pc = DEPRECATED_FRAME_SAVED_PC (fi);
int insn = read_memory_unsigned_integer (pc, 2);
val = 0;
if (insn == 0047757 || insn == 0157374)
val = read_memory_integer (pc + 2, 2);
else if ((insn & 0170777) == 0050217
|| (insn & 0170777) == 0050117)
{
val = (insn >> 9) & 7;
if (val == 0)
val = 8;
}
else if (insn == 0157774)
val = read_memory_integer (pc + 2, 4);
val >>= 2;
return val;
}
static CORE_ADDR
m68k_push_dummy_call (struct gdbarch *gdbarch, CORE_ADDR func_addr,
struct regcache *regcache, CORE_ADDR bp_addr, int nargs,
struct value **args, CORE_ADDR sp, int struct_return,
CORE_ADDR struct_addr)
{
char 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, M68K_A1_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)
{
char 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;
char 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, int *optimizedp,
enum lval_type *lvalp, CORE_ADDR *addrp,
int *realnump, void *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 = 0;
*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 = 0;
*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 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 struct m68k_frame_cache *
m68k_sigtramp_frame_cache (struct frame_info *next_frame, void **this_cache)
{
struct m68k_frame_cache *cache;
struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
struct m68k_sigtramp_info info;
char buf[4];
int i;
if (*this_cache)
return *this_cache;
cache = m68k_alloc_frame_cache ();
frame_unwind_register (next_frame, M68K_SP_REGNUM, buf);
cache->base = extract_unsigned_integer (buf, 4) - 4;
info = tdep->get_sigtramp_info (next_frame);
for (i = 0; i < M68K_NUM_REGS; i++)
if (info.sc_reg_offset[i] != -1)
cache->saved_regs[i] = info.sigcontext_addr + info.sc_reg_offset[i];
*this_cache = cache;
return cache;
}
static void
m68k_sigtramp_frame_this_id (struct frame_info *next_frame, void **this_cache,
struct frame_id *this_id)
{
struct m68k_frame_cache *cache =
m68k_sigtramp_frame_cache (next_frame, this_cache);
*this_id = frame_id_build (cache->base + 8, frame_pc_unwind (next_frame));
}
static void
m68k_sigtramp_frame_prev_register (struct frame_info *next_frame,
void **this_cache,
int regnum, int *optimizedp,
enum lval_type *lvalp, CORE_ADDR *addrp,
int *realnump, void *valuep)
{
m68k_sigtramp_frame_cache (next_frame, this_cache);
m68k_frame_prev_register (next_frame, this_cache, regnum,
optimizedp, lvalp, addrp, realnump, valuep);
}
static const struct frame_unwind m68k_sigtramp_frame_unwind =
{
SIGTRAMP_FRAME,
m68k_sigtramp_frame_this_id,
m68k_sigtramp_frame_prev_register
};
static const struct frame_unwind *
m68k_sigtramp_frame_sniffer (struct frame_info *next_frame)
{
CORE_ADDR pc = frame_pc_unwind (next_frame);
char *name;
if (!gdbarch_tdep (current_gdbarch)->get_sigtramp_info)
return NULL;
find_pc_partial_function (pc, &name, NULL, NULL);
if (PC_IN_SIGTRAMP (pc, name))
return &m68k_sigtramp_frame_unwind;
return NULL;
}
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)
{
char 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++)
{
supply_register (regi, (char *) (regp + regi));
}
supply_register (PS_REGNUM, (char *) (regp + R_PS));
supply_register (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_collect (regi, regp + regi);
}
if (regno == -1 || regno == PS_REGNUM)
regcache_collect (PS_REGNUM, regp + R_PS);
if (regno == -1 || regno == PC_REGNUM)
regcache_collect (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]);
supply_register (regi, from);
}
supply_register (M68K_FPC_REGNUM, (char *) &(fpregsetp->f_pcr));
supply_register (M68K_FPS_REGNUM, (char *) &(fpregsetp->f_psr));
supply_register (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_collect (regi, &fpregsetp->f_fpregs[regi - FP0_REGNUM][0]);
}
if (regno == -1 || regno == M68K_FPC_REGNUM)
regcache_collect (M68K_FPC_REGNUM, &fpregsetp->f_pcr);
if (regno == -1 || regno == M68K_FPS_REGNUM)
regcache_collect (M68K_FPS_REGNUM, &fpregsetp->f_psr);
if (regno == -1 || regno == M68K_FPI_REGNUM)
regcache_collect (M68K_FPI_REGNUM, &fpregsetp->f_fpiaddr);
}
#endif
#endif
int
m68k_get_longjmp_target (CORE_ADDR *pc)
{
char *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;
}
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_parm_boundary (gdbarch, 32);
set_gdbarch_believe_pcc_promotion (gdbarch, 1);
set_gdbarch_decr_pc_after_break (gdbarch, 2);
set_gdbarch_extract_return_value (gdbarch, m68k_extract_return_value);
set_gdbarch_store_return_value (gdbarch, m68k_store_return_value);
set_gdbarch_deprecated_extract_struct_value_address (gdbarch, m68k_extract_struct_value_address);
set_gdbarch_use_struct_convention (gdbarch, m68k_use_struct_convention);
set_gdbarch_deprecated_frameless_function_invocation (gdbarch, m68k_frameless_function_invocation);
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_push_dummy_call (gdbarch, m68k_push_dummy_call);
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->get_sigtramp_info = NULL;
tdep->struct_return = pcc_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_sigtramp_frame_sniffer);
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);
}