/* Target-dependent code for Xilinx MicroBlaze.
- Copyright 2009-2012 Free Software Foundation, Inc.
+ Copyright (C) 2009-2015 Free Software Foundation, Inc.
This file is part of GDB.
#include "inferior.h"
#include "regcache.h"
#include "target.h"
-#include "frame.h"
#include "frame-base.h"
#include "frame-unwind.h"
#include "dwarf2-frame.h"
#include "osabi.h"
-
-#include "gdb_assert.h"
-#include "gdb_string.h"
#include "target-descriptions.h"
#include "opcodes/microblaze-opcm.h"
#include "opcodes/microblaze-dis.h"
#include "microblaze-tdep.h"
+#include "remote.h"
+
+#include "features/microblaze-with-stack-protect.c"
+#include "features/microblaze.c"
\f
/* Instruction macros used for analyzing the prologue. */
/* This set of instruction macros need to be changed whenever the
"rpc", "rmsr", "rear", "resr", "rfsr", "rbtr",
"rpvr0", "rpvr1", "rpvr2", "rpvr3", "rpvr4", "rpvr5", "rpvr6",
"rpvr7", "rpvr8", "rpvr9", "rpvr10", "rpvr11",
- "redr", "rpid", "rzpr", "rtlbx", "rtlbsx", "rtlblo", "rtlbhi"
+ "redr", "rpid", "rzpr", "rtlbx", "rtlbsx", "rtlblo", "rtlbhi",
+ "rslr", "rshr"
};
#define MICROBLAZE_NUM_REGS ARRAY_SIZE (microblaze_register_names)
\f
-static int microblaze_debug_flag = 0;
+static unsigned int microblaze_debug_flag = 0;
-void
+static void
microblaze_debug (const char *fmt, ...)
{
if (microblaze_debug_flag)
\f
/* Fetch the instruction at PC. */
-unsigned long
+static unsigned long
microblaze_fetch_instruction (CORE_ADDR pc)
{
- enum bfd_endian byte_order = gdbarch_byte_order (target_gdbarch);
+ enum bfd_endian byte_order = gdbarch_byte_order (target_gdbarch ());
gdb_byte buf[4];
/* If we can't read the instruction at PC, return zero. */
- if (target_read_memory (pc, buf, sizeof (buf)))
+ if (target_read_code (pc, buf, sizeof (buf)))
return 0;
return extract_unsigned_integer (buf, 4, byte_order);
microblaze_alloc_frame_cache (void)
{
struct microblaze_frame_cache *cache;
- int i;
cache = FRAME_OBSTACK_ZALLOC (struct microblaze_frame_cache);
const char *name;
CORE_ADDR func_addr, func_end, addr, stop, prologue_end_addr = 0;
unsigned long insn;
- int rn, rd, ra, rb, imm;
+ int rd, ra, rb, imm;
enum microblaze_instr op;
int flags = 0;
int save_hidden_pointer_found = 0;
/* Return PC of first real instruction of the function starting at
START_PC. */
-CORE_ADDR
+static CORE_ADDR
microblaze_skip_prologue (struct gdbarch *gdbarch, CORE_ADDR start_pc)
{
struct symtab_and_line sal;
/* Normal frames. */
-struct microblaze_frame_cache *
+static struct microblaze_frame_cache *
microblaze_frame_cache (struct frame_info *next_frame, void **this_cache)
{
struct microblaze_frame_cache *cache;
struct gdbarch *gdbarch = get_frame_arch (next_frame);
- CORE_ADDR func, pc, fp;
+ CORE_ADDR func;
int rn;
if (*this_cache)
memcpy(valbuf, buf + MICROBLAZE_REGISTER_SIZE - 1, 1);
return;
case 2: /* return last 2 bytes in register. */
+ regcache_cooked_read (regcache, MICROBLAZE_RETVAL_REGNUM, buf);
memcpy(valbuf, buf + MICROBLAZE_REGISTER_SIZE - 2, 2);
return;
case 4: /* for sizes 4 or 8, copy the required length. */
}
static enum return_value_convention
-microblaze_return_value (struct gdbarch *gdbarch, struct type *func_type,
+microblaze_return_value (struct gdbarch *gdbarch, struct value *function,
struct type *type, struct regcache *regcache,
gdb_byte *readbuf, const gdb_byte *writebuf)
{
static int
microblaze_dwarf2_reg_to_regnum (struct gdbarch *gdbarch, int reg)
{
- gdb_assert (reg < sizeof (dwarf2_to_reg_map));
+ gdb_assert ((size_t) reg < sizeof (dwarf2_to_reg_map));
return dwarf2_to_reg_map[reg];
}
+static void
+microblaze_register_g_packet_guesses (struct gdbarch *gdbarch)
+{
+ register_remote_g_packet_guess (gdbarch,
+ 4 * MICROBLAZE_NUM_CORE_REGS,
+ tdesc_microblaze);
+
+ register_remote_g_packet_guess (gdbarch,
+ 4 * MICROBLAZE_NUM_REGS,
+ tdesc_microblaze_with_stack_protect);
+}
+
static struct gdbarch *
microblaze_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
{
struct gdbarch_tdep *tdep;
struct gdbarch *gdbarch;
+ struct tdesc_arch_data *tdesc_data = NULL;
+ const struct target_desc *tdesc = info.target_desc;
/* If there is already a candidate, use it. */
arches = gdbarch_list_lookup_by_info (arches, &info);
if (arches != NULL)
return arches->gdbarch;
+ if (tdesc == NULL)
+ tdesc = tdesc_microblaze;
+
+ /* Check any target description for validity. */
+ if (tdesc_has_registers (tdesc))
+ {
+ const struct tdesc_feature *feature;
+ int valid_p;
+ int i;
+
+ feature = tdesc_find_feature (tdesc,
+ "org.gnu.gdb.microblaze.core");
+ if (feature == NULL)
+ return NULL;
+ tdesc_data = tdesc_data_alloc ();
+
+ valid_p = 1;
+ for (i = 0; i < MICROBLAZE_NUM_CORE_REGS; i++)
+ valid_p &= tdesc_numbered_register (feature, tdesc_data, i,
+ microblaze_register_names[i]);
+ feature = tdesc_find_feature (tdesc,
+ "org.gnu.gdb.microblaze.stack-protect");
+ if (feature != NULL)
+ {
+ valid_p = 1;
+ valid_p &= tdesc_numbered_register (feature, tdesc_data,
+ MICROBLAZE_SLR_REGNUM,
+ "rslr");
+ valid_p &= tdesc_numbered_register (feature, tdesc_data,
+ MICROBLAZE_SHR_REGNUM,
+ "rshr");
+ }
+
+ if (!valid_p)
+ {
+ tdesc_data_cleanup (tdesc_data);
+ return NULL;
+ }
+ }
/* Allocate space for the new architecture. */
- tdep = XMALLOC (struct gdbarch_tdep);
+ tdep = XNEW (struct gdbarch_tdep);
gdbarch = gdbarch_alloc (&info, tdep);
set_gdbarch_long_double_bit (gdbarch, 128);
set_gdbarch_unwind_pc (gdbarch, microblaze_unwind_pc);
+ microblaze_register_g_packet_guesses (gdbarch);
+
frame_base_set_default (gdbarch, µblaze_frame_base);
/* Hook in ABI-specific overrides, if they have been registered. */
dwarf2_append_unwinders (gdbarch);
frame_unwind_append_unwinder (gdbarch, µblaze_frame_unwind);
frame_base_append_sniffer (gdbarch, dwarf2_frame_base_sniffer);
+ if (tdesc_data != NULL)
+ tdesc_use_registers (gdbarch, tdesc, tdesc_data);
return gdbarch;
}
{
register_gdbarch_init (bfd_arch_microblaze, microblaze_gdbarch_init);
+ initialize_tdesc_microblaze_with_stack_protect ();
+ initialize_tdesc_microblaze ();
/* Debug this files internals. */
- add_setshow_zinteger_cmd ("microblaze", class_maintenance,
- µblaze_debug_flag, _("\
+ add_setshow_zuinteger_cmd ("microblaze", class_maintenance,
+ µblaze_debug_flag, _("\
Set microblaze debugging."), _("\
Show microblaze debugging."), _("\
When non-zero, microblaze specific debugging is enabled."),
- NULL,
- NULL,
- &setdebuglist, &showdebuglist);
+ NULL,
+ NULL,
+ &setdebuglist, &showdebuglist);
}
projects / deliverable / binutils-gdb.git / blobdiff