/* Target-dependent code for the Motorola 88000 series.
- Copyright 2004 Free Software Foundation, Inc.
+ Copyright (C) 2004-2017 Free Software Foundation, Inc.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
+ the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
#include "arch-utils.h"
#include "symtab.h"
#include "trad-frame.h"
#include "value.h"
-
-#include "gdb_assert.h"
-#include "gdb_string.h"
+#include <algorithm>
#include "m88k-tdep.h"
/* Fetch the instruction at PC. */
static unsigned long
-m88k_fetch_instruction (CORE_ADDR pc)
+m88k_fetch_instruction (CORE_ADDR pc, enum bfd_endian byte_order)
{
- return read_memory_unsigned_integer (pc, 4);
+ return read_memory_unsigned_integer (pc, 4, byte_order);
}
/* Register information. */
/* Return the name of register REGNUM. */
static const char *
-m88k_register_name (int regnum)
+m88k_register_name (struct gdbarch *gdbarch, int regnum)
{
- static char *register_names[] =
+ static const char *register_names[] =
{
"r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
"r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
}
/* Return the GDB type object for the "standard" data type of data in
- register REGNUM. */
+ register REGNUM. */
static struct type *
m88k_register_type (struct gdbarch *gdbarch, int regnum)
/* SXIP, SNIP, SFIP and R1 contain code addresses. */
if ((regnum >= M88K_SXIP_REGNUM && regnum <= M88K_SFIP_REGNUM)
|| regnum == M88K_R1_REGNUM)
- return builtin_type_void_func_ptr;
+ return builtin_type (gdbarch)->builtin_func_ptr;
/* R30 and R31 typically contains data addresses. */
if (regnum == M88K_R30_REGNUM || regnum == M88K_R31_REGNUM)
- return builtin_type_void_data_ptr;
+ return builtin_type (gdbarch)->builtin_data_ptr;
- return builtin_type_int32;
+ return builtin_type (gdbarch)->builtin_int32;
}
\f
static CORE_ADDR
-m88k_addr_bits_remove (CORE_ADDR addr)
+m88k_addr_bits_remove (struct gdbarch *gdbarch, CORE_ADDR addr)
{
/* All instructures are 4-byte aligned. The lower 2 bits of SXIP,
SNIP and SFIP are used for special purposes: bit 0 is the
encode a breakpoint instruction, store the length of the string in
*LEN and optionally adjust *PC to point to the correct memory
location for inserting the breakpoint. */
-
-static const unsigned char *
-m88k_breakpoint_from_pc (CORE_ADDR *pc, int *len)
-{
- /* tb 0,r0,511 */
- static unsigned char break_insn[] = { 0xf0, 0x00, 0xd1, 0xff };
- *len = sizeof (break_insn);
- return break_insn;
-}
+/* tb 0,r0,511 */
+constexpr gdb_byte m88k_break_insn[] = { 0xf0, 0x00, 0xd1, 0xff };
+
+typedef BP_MANIPULATION (m88k_break_insn) m88k_breakpoint;
static CORE_ADDR
m88k_unwind_pc (struct gdbarch *gdbarch, struct frame_info *next_frame)
CORE_ADDR pc;
pc = frame_unwind_register_unsigned (next_frame, M88K_SXIP_REGNUM);
- return m88k_addr_bits_remove (pc);
+ return m88k_addr_bits_remove (gdbarch, pc);
}
static void
-m88k_write_pc (CORE_ADDR pc, ptid_t ptid)
+m88k_write_pc (struct regcache *regcache, CORE_ADDR pc)
{
/* According to the MC88100 RISC Microprocessor User's Manual,
section 6.4.3.1.2:
with it. We could even (presumably) give it a totally bogus
value. */
- write_register_pid (M88K_SXIP_REGNUM, pc, ptid);
- write_register_pid (M88K_SNIP_REGNUM, pc | 2, ptid);
- write_register_pid (M88K_SFIP_REGNUM, (pc + 4) | 2, ptid);
+ regcache_cooked_write_unsigned (regcache, M88K_SXIP_REGNUM, pc);
+ regcache_cooked_write_unsigned (regcache, M88K_SNIP_REGNUM, pc | 2);
+ regcache_cooked_write_unsigned (regcache, M88K_SFIP_REGNUM, (pc + 4) | 2);
}
\f
return 1;
case TYPE_CODE_PTR:
case TYPE_CODE_REF:
+ case TYPE_CODE_RVALUE_REF:
{
/* Allow only 32-bit pointers. */
return (TYPE_LENGTH (type) == 4);
m88k_store_arguments (struct regcache *regcache, int nargs,
struct value **args, CORE_ADDR sp)
{
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
int num_register_words = 0;
int num_stack_words = 0;
int i;
if (m88k_integral_or_pointer_p (type) && len < 4)
{
- args[i] = value_cast (builtin_type_int32, args[i]);
+ args[i] = value_cast (builtin_type (gdbarch)->builtin_int32,
+ args[i]);
type = value_type (args[i]);
len = TYPE_LENGTH (type);
}
for (i = 0; i < nargs; i++)
{
- char *valbuf = VALUE_CONTENTS (args[i]);
+ const bfd_byte *valbuf = value_contents (args[i]);
struct type *type = value_type (args[i]);
int len = TYPE_LENGTH (type);
int stack_word = num_stack_words;
}
static struct frame_id
-m88k_unwind_dummy_id (struct gdbarch *arch, struct frame_info *next_frame)
+m88k_dummy_id (struct gdbarch *arch, struct frame_info *this_frame)
{
CORE_ADDR sp;
- sp = frame_unwind_register_unsigned (next_frame, M88K_R31_REGNUM);
- return frame_id_build (sp, frame_pc_unwind (next_frame));
+ sp = get_frame_register_unsigned (this_frame, M88K_R31_REGNUM);
+ return frame_id_build (sp, get_frame_pc (this_frame));
}
\f
from WRITEBUF into REGCACHE. */
static enum return_value_convention
-m88k_return_value (struct gdbarch *gdbarch, struct type *type,
- struct regcache *regcache, void *readbuf,
- const void *writebuf)
+m88k_return_value (struct gdbarch *gdbarch, struct value *function,
+ struct type *type, struct regcache *regcache,
+ gdb_byte *readbuf, const gdb_byte *writebuf)
{
int len = TYPE_LENGTH (type);
- char buf[8];
+ gdb_byte buf[8];
if (!m88k_integral_or_pointer_p (type) && !m88k_floating_p (type))
return RETURN_VALUE_STRUCT_CONVENTION;
prologue. */
static CORE_ADDR
-m88k_analyze_prologue (CORE_ADDR pc, CORE_ADDR limit,
+m88k_analyze_prologue (struct gdbarch *gdbarch,
+ CORE_ADDR pc, CORE_ADDR limit,
struct m88k_frame_cache *cache)
{
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
CORE_ADDR end = limit;
/* Provide a dummy cache if necessary. */
if (cache == NULL)
{
- size_t sizeof_saved_regs =
- (M88K_R31_REGNUM + 1) * sizeof (struct trad_frame_saved_reg);
-
- cache = alloca (sizeof (struct m88k_frame_cache));
- cache->saved_regs = alloca (sizeof_saved_regs);
+ cache = XALLOCA (struct m88k_frame_cache);
+ cache->saved_regs =
+ XALLOCAVEC (struct trad_frame_saved_reg, M88K_R31_REGNUM + 1);
/* We only initialize the members we care about. */
cache->saved_regs[M88K_R1_REGNUM].addr = -1;
while (pc < limit)
{
struct m88k_prologue_insn *pi = m88k_prologue_insn_table;
- unsigned long insn = m88k_fetch_instruction (pc);
+ unsigned long insn = m88k_fetch_instruction (pc, byte_order);
while ((insn & pi->mask) != pi->insn)
pi++;
prologue. */
if (cache->fp_offset != -1
&& cache->saved_regs[M88K_R1_REGNUM].addr != -1)
- return min (pc, end);
+ return std::min (pc, end);
break;
case M88K_PIA_NOTE_ST:
/* If no frame has been allocated, the stores aren't part of
the prologue. */
if (cache->sp_offset == 0)
- return min (pc, end);
+ return std::min (pc, end);
/* Record location of saved registers. */
{
/* A second stack pointer adjustment isn't part of the
prologue. */
if (cache->sp_offset != 0)
- return min (pc, end);
+ return std::min (pc, end);
/* Store stack pointer adjustment. */
cache->sp_offset = -SUBU_OFFSET (insn);
/* A second frame pointer assignment isn't part of the
prologue. */
if (cache->fp_offset != -1)
- return min (pc, end);
+ return std::min (pc, end);
/* Record frame pointer assignment. */
cache->fp_offset = ADDU_OFFSET (insn);
the instruction in the delay slot might be. Limit the
prologue analysis to the delay slot and record the branch
instruction as the end of the prologue. */
- limit = min (limit, pc + 2 * M88K_INSN_SIZE);
+ limit = std::min (limit, pc + 2 * M88K_INSN_SIZE);
end = pc;
break;
case M88K_PIA_NOTE_PROLOGUE_END:
- return min (pc, end);
+ return std::min (pc, end);
}
pc += M88K_INSN_SIZE;
starting at PC. */
static CORE_ADDR
-m88k_skip_prologue (CORE_ADDR pc)
+m88k_skip_prologue (struct gdbarch *gdbarch, CORE_ADDR pc)
{
struct symtab_and_line sal;
CORE_ADDR func_start, func_end;
return sal.end;
}
- return m88k_analyze_prologue (pc, pc + m88k_max_prologue_size, NULL);
+ return m88k_analyze_prologue (gdbarch, pc, pc + m88k_max_prologue_size,
+ NULL);
}
-struct m88k_frame_cache *
-m88k_frame_cache (struct frame_info *next_frame, void **this_cache)
+static struct m88k_frame_cache *
+m88k_frame_cache (struct frame_info *this_frame, void **this_cache)
{
+ struct gdbarch *gdbarch = get_frame_arch (this_frame);
struct m88k_frame_cache *cache;
CORE_ADDR frame_sp;
if (*this_cache)
- return *this_cache;
+ return (struct m88k_frame_cache *) *this_cache;
cache = FRAME_OBSTACK_ZALLOC (struct m88k_frame_cache);
- cache->saved_regs = trad_frame_alloc_saved_regs (next_frame);
+ cache->saved_regs = trad_frame_alloc_saved_regs (this_frame);
cache->fp_offset = -1;
- cache->pc = frame_func_unwind (next_frame);
+ cache->pc = get_frame_func (this_frame);
if (cache->pc != 0)
- {
- CORE_ADDR addr_in_block = frame_unwind_address_in_block (next_frame);
- m88k_analyze_prologue (cache->pc, addr_in_block, cache);
- }
+ m88k_analyze_prologue (gdbarch, cache->pc, get_frame_pc (this_frame),
+ cache);
/* Calculate the stack pointer used in the prologue. */
if (cache->fp_offset != -1)
{
CORE_ADDR fp;
- fp = frame_unwind_register_unsigned (next_frame, M88K_R30_REGNUM);
+ fp = get_frame_register_unsigned (this_frame, M88K_R30_REGNUM);
frame_sp = fp - cache->fp_offset;
}
else
solid guess at what the frame pointer should be. */
if (cache->saved_regs[M88K_R1_REGNUM].addr != -1)
cache->fp_offset = cache->saved_regs[M88K_R1_REGNUM].addr - 4;
- frame_sp = frame_unwind_register_unsigned (next_frame, M88K_R31_REGNUM);
+ frame_sp = get_frame_register_unsigned (this_frame, M88K_R31_REGNUM);
}
/* Now that we know the stack pointer, adjust the location of the
}
static void
-m88k_frame_this_id (struct frame_info *next_frame, void **this_cache,
+m88k_frame_this_id (struct frame_info *this_frame, void **this_cache,
struct frame_id *this_id)
{
- struct m88k_frame_cache *cache = m88k_frame_cache (next_frame, this_cache);
+ struct m88k_frame_cache *cache = m88k_frame_cache (this_frame, this_cache);
/* This marks the outermost frame. */
if (cache->base == 0)
(*this_id) = frame_id_build (cache->base, cache->pc);
}
-static void
-m88k_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)
+static struct value *
+m88k_frame_prev_register (struct frame_info *this_frame,
+ void **this_cache, int regnum)
{
- struct m88k_frame_cache *cache = m88k_frame_cache (next_frame, this_cache);
+ struct m88k_frame_cache *cache = m88k_frame_cache (this_frame, this_cache);
if (regnum == M88K_SNIP_REGNUM || regnum == M88K_SFIP_REGNUM)
{
- if (valuep)
- {
- CORE_ADDR pc;
+ struct value *value;
+ CORE_ADDR pc;
- trad_frame_get_prev_register (next_frame, cache->saved_regs,
- M88K_SXIP_REGNUM, optimizedp,
- lvalp, addrp, realnump, valuep);
+ value = trad_frame_get_prev_register (this_frame, cache->saved_regs,
+ M88K_SXIP_REGNUM);
+ pc = value_as_long (value);
+ release_value (value);
+ value_free (value);
- pc = extract_unsigned_integer (valuep, 4);
- if (regnum == M88K_SFIP_REGNUM)
- pc += 4;
- store_unsigned_integer (valuep, 4, pc + 4);
- }
+ if (regnum == M88K_SFIP_REGNUM)
+ pc += 4;
- /* It's a computed value. */
- *optimizedp = 0;
- *lvalp = not_lval;
- *addrp = 0;
- *realnump = -1;
- return;
+ return frame_unwind_got_constant (this_frame, regnum, pc + 4);
}
- trad_frame_get_prev_register (next_frame, cache->saved_regs, regnum,
- optimizedp, lvalp, addrp, realnump, valuep);
+ return trad_frame_get_prev_register (this_frame, cache->saved_regs, regnum);
}
static const struct frame_unwind m88k_frame_unwind =
{
NORMAL_FRAME,
+ default_frame_unwind_stop_reason,
m88k_frame_this_id,
- m88k_frame_prev_register
+ m88k_frame_prev_register,
+ NULL,
+ default_frame_sniffer
};
-
-static const struct frame_unwind *
-m88k_frame_sniffer (struct frame_info *next_frame)
-{
- return &m88k_frame_unwind;
-}
\f
static CORE_ADDR
-m88k_frame_base_address (struct frame_info *next_frame, void **this_cache)
+m88k_frame_base_address (struct frame_info *this_frame, void **this_cache)
{
- struct m88k_frame_cache *cache = m88k_frame_cache (next_frame, this_cache);
+ struct m88k_frame_cache *cache = m88k_frame_cache (this_frame, this_cache);
if (cache->fp_offset != -1)
return cache->base + cache->sp_offset + cache->fp_offset;
struct regcache *regcache,
int regnum, const void *gregs, size_t len)
{
- const char *regs = gregs;
+ const gdb_byte *regs = (const gdb_byte *) gregs;
int i;
for (i = 0; i < M88K_NUM_REGS; i++)
/* Motorola 88000 register set. */
-static struct regset m88k_gregset =
+static const struct regset m88k_gregset =
{
NULL,
m88k_supply_gregset
};
-/* Return the appropriate register set for the core section identified
- by SECT_NAME and SECT_SIZE. */
+/* Iterate over supported core file register note sections. */
-static const struct regset *
-m88k_regset_from_core_section (struct gdbarch *gdbarch,
- const char *sect_name, size_t sect_size)
+static void
+m88k_iterate_over_regset_sections (struct gdbarch *gdbarch,
+ iterate_over_regset_sections_cb *cb,
+ void *cb_data,
+ const struct regcache *regcache)
{
- if (strcmp (sect_name, ".reg") == 0 && sect_size >= M88K_NUM_REGS * 4)
- return &m88k_gregset;
-
- return NULL;
+ cb (".reg", M88K_NUM_REGS * 4, &m88k_gregset, NULL, cb_data);
}
\f
/* There is no real `long double'. */
set_gdbarch_long_double_bit (gdbarch, 64);
- set_gdbarch_long_double_format (gdbarch, &floatformat_ieee_double_big);
+ set_gdbarch_long_double_format (gdbarch, floatformats_ieee_double);
set_gdbarch_num_regs (gdbarch, M88K_NUM_REGS);
set_gdbarch_register_name (gdbarch, m88k_register_name);
set_gdbarch_pc_regnum (gdbarch, M88K_SXIP_REGNUM);
/* Core file support. */
- set_gdbarch_regset_from_core_section
- (gdbarch, m88k_regset_from_core_section);
-
- set_gdbarch_print_insn (gdbarch, print_insn_m88k);
+ set_gdbarch_iterate_over_regset_sections
+ (gdbarch, m88k_iterate_over_regset_sections);
set_gdbarch_skip_prologue (gdbarch, m88k_skip_prologue);
/* Call dummy code. */
set_gdbarch_push_dummy_call (gdbarch, m88k_push_dummy_call);
- set_gdbarch_unwind_dummy_id (gdbarch, m88k_unwind_dummy_id);
+ set_gdbarch_dummy_id (gdbarch, m88k_dummy_id);
- /* Return value info */
+ /* Return value info. */
set_gdbarch_return_value (gdbarch, m88k_return_value);
set_gdbarch_addr_bits_remove (gdbarch, m88k_addr_bits_remove);
- set_gdbarch_breakpoint_from_pc (gdbarch, m88k_breakpoint_from_pc);
+ set_gdbarch_breakpoint_kind_from_pc (gdbarch, m88k_breakpoint::kind_from_pc);
+ set_gdbarch_sw_breakpoint_from_kind (gdbarch, m88k_breakpoint::bp_from_kind);
set_gdbarch_unwind_pc (gdbarch, m88k_unwind_pc);
set_gdbarch_write_pc (gdbarch, m88k_write_pc);
frame_base_set_default (gdbarch, &m88k_frame_base);
- frame_unwind_append_sniffer (gdbarch, m88k_frame_sniffer);
+ frame_unwind_append_unwinder (gdbarch, &m88k_frame_unwind);
return gdbarch;
}
-\f
-
-/* Provide a prototype to silence -Wmissing-prototypes. */
-void _initialize_m88k_tdep (void);
void
_initialize_m88k_tdep (void)
projects / deliverable / binutils-gdb.git / blobdiff