/* Target dependent code for CRIS, for GDB, the GNU debugger.
- Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010,
- 2011 Free Software Foundation, Inc.
+ Copyright (C) 2001-2014 Free Software Foundation, Inc.
Contributed by Axis Communications AB.
Written by Hendrik Ruijter, Stefan Andersson, and Orjan Friberg.
#include "target.h"
#include "value.h"
#include "opcode/cris.h"
+#include "osabi.h"
#include "arch-utils.h"
#include "regcache.h"
-#include "gdb_assert.h"
#include "objfiles.h"
#include "solib.h" /* Support for shared libraries. */
#include "solib-svr4.h"
-#include "gdb_string.h"
#include "dis-asm.h"
+#include "cris-tdep.h"
+
enum cris_num_regs
{
/* There are no floating point registers. Used in gdbserver low-linux.c. */
/* CRIS version, set via the user command 'set cris-version'. Affects
register names and sizes. */
-static int usr_cmd_cris_version;
+static unsigned int usr_cmd_cris_version;
/* Indicates whether to trust the above variable. */
static int usr_cmd_cris_version_valid = 0;
static const char cris_mode_normal[] = "normal";
static const char cris_mode_guru[] = "guru";
-static const char *cris_modes[] = {
+static const char *const cris_modes[] = {
cris_mode_normal,
cris_mode_guru,
0
/* Whether to make use of Dwarf-2 CFI (default on). */
static int usr_cmd_cris_dwarf2_cfi = 1;
-/* CRIS architecture specific information. */
-struct gdbarch_tdep
-{
- int cris_version;
- const char *cris_mode;
- int cris_dwarf2_cfi;
-};
-
/* Sigtramp identification code copied from i386-linux-tdep.c. */
#define SIGTRAMP_INSN0 0x9c5f /* movu.w 0xXX, $r9 */
enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
CORE_ADDR pc;
CORE_ADDR sp;
- char buf[4];
+ gdb_byte buf[4];
get_frame_register (this_frame, gdbarch_sp_regnum (gdbarch), buf);
sp = extract_unsigned_integer (buf, 4, byte_order);
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
struct cris_unwind_cache *info;
- CORE_ADDR pc;
- CORE_ADDR sp;
CORE_ADDR addr;
- char buf[4];
+ gdb_byte buf[4];
int i;
if ((*this_cache))
static const struct frame_unwind cris_sigtramp_frame_unwind =
{
SIGTRAMP_FRAME,
+ default_frame_unwind_stop_reason,
cris_sigtramp_frame_this_id,
cris_sigtramp_frame_prev_register,
NULL,
return ret;
}
-/* Hardware watchpoint support. */
-
-/* We support 6 hardware data watchpoints, but cannot trigger on execute
- (any combination of read/write is fine). */
-
-int
-cris_can_use_hardware_watchpoint (int type, int count, int other)
-{
- struct gdbarch_tdep *tdep = gdbarch_tdep (target_gdbarch);
-
- /* No bookkeeping is done here; it is handled by the remote debug agent. */
-
- if (tdep->cris_version != 32)
- return 0;
- else
- /* CRISv32: Six data watchpoints, one for instructions. */
- return (((type == bp_read_watchpoint || type == bp_access_watchpoint
- || type == bp_hardware_watchpoint) && count <= 6)
- || (type == bp_hardware_breakpoint && count <= 1));
-}
-
-/* The CRISv32 hardware data watchpoints work by specifying ranges,
- which have no alignment or length restrictions. */
-
-int
-cris_region_ok_for_watchpoint (CORE_ADDR addr, int len)
-{
- return 1;
-}
-
-/* If the inferior has some watchpoint that triggered, return the
- address associated with that watchpoint. Otherwise, return
- zero. */
-
-CORE_ADDR
-cris_stopped_data_address (void)
-{
- CORE_ADDR eda;
- eda = get_frame_register_unsigned (get_current_frame (), EDA_REGNUM);
- return eda;
-}
-
/* The instruction environment needed to find single-step breakpoints. */
typedef
};
static struct stack_item *
-push_stack_item (struct stack_item *prev, void *contents, int len)
+push_stack_item (struct stack_item *prev, const gdb_byte *contents, int len)
{
struct stack_item *si;
si = xmalloc (sizeof (struct stack_item));
{
struct gdbarch *gdbarch = get_frame_arch (this_frame);
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
- CORE_ADDR pc;
struct cris_unwind_cache *info;
- int i;
if ((*this_prologue_cache))
return (*this_prologue_cache);
int struct_return, CORE_ADDR struct_addr)
{
enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
- int stack_alloc;
int stack_offset;
int argreg;
int argnum;
- CORE_ADDR regval;
-
/* The function's arguments and memory allocated by gdb for the arguments to
point at reside in separate areas on the stack.
Both frame pointers grow toward higher addresses. */
for (argnum = 0; argnum < nargs; argnum++)
{
int len;
- char *val;
+ const gdb_byte *val;
int reg_demand;
int i;
len = TYPE_LENGTH (value_type (args[argnum]));
- val = (char *) value_contents (args[argnum]);
+ val = value_contents (args[argnum]);
/* How may registers worth of storage do we need for this argument? */
reg_demand = (len / 4) + (len % 4 != 0 ? 1 : 0);
static const struct frame_unwind cris_frame_unwind =
{
NORMAL_FRAME,
+ default_frame_unwind_stop_reason,
cris_frame_this_id,
cris_frame_prev_register,
NULL,
struct cris_spec_reg spec_reg)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
- int version = tdep->cris_version;
+ unsigned int version = tdep->cris_version;
switch (spec_reg.applicable_version)
{
static void
cris_store_return_value (struct type *type, struct regcache *regcache,
- const void *valbuf)
+ const gdb_byte *valbuf)
{
struct gdbarch *gdbarch = get_regcache_arch (regcache);
enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
/* Put the return value in R10 and R11. */
val = extract_unsigned_integer (valbuf, 4, byte_order);
regcache_cooked_write_unsigned (regcache, ARG1_REGNUM, val);
- val = extract_unsigned_integer ((char *)valbuf + 4, len - 4, byte_order);
+ val = extract_unsigned_integer (valbuf + 4, len - 4, byte_order);
regcache_cooked_write_unsigned (regcache, ARG2_REGNUM, val);
}
else
static void
cris_extract_return_value (struct type *type, struct regcache *regcache,
- void *valbuf)
+ gdb_byte *valbuf)
{
struct gdbarch *gdbarch = get_regcache_arch (regcache);
enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
regcache_cooked_read_unsigned (regcache, ARG1_REGNUM, &val);
store_unsigned_integer (valbuf, 4, byte_order, val);
regcache_cooked_read_unsigned (regcache, ARG2_REGNUM, &val);
- store_unsigned_integer ((char *)valbuf + 4, len - 4, byte_order, val);
+ store_unsigned_integer (valbuf + 4, len - 4, byte_order, val);
}
else
error (_("cris_extract_return_value: type length too large"));
/* Handle the CRIS return value convention. */
static enum return_value_convention
-cris_return_value (struct gdbarch *gdbarch, struct type *func_type,
+cris_return_value (struct gdbarch *gdbarch, struct value *function,
struct type *type, struct regcache *regcache,
gdb_byte *readbuf, const gdb_byte *writebuf)
{
instruction. It stems from cris_constraint, found in cris-dis.c. */
static int
-constraint (unsigned int insn, const signed char *inst_args,
+constraint (unsigned int insn, const char *inst_args,
inst_env_type *inst_env)
{
int retval = 0;
int tmp, i;
- const char *s = inst_args;
+ const gdb_byte *s = (const gdb_byte *) inst_args;
for (; *s; s++)
switch (*s)
static void
bdap_prefix (unsigned short inst, inst_env_type *inst_env)
{
-
- long offset;
-
/* It's invalid to be in a delay slot. */
if (inst_env->slot_needed || inst_env->prefix_found)
{
return;
}
/* The shift size is given as a 5 bit quick value, i.e. we don't
- want the the sign bit of the quick value. */
+ want the sign bit of the quick value. */
shift_steps = cris_get_asr_shift_steps (inst);
value = inst_env->reg[REG_PC];
if (value & SIGNED_DWORD_MASK)
{
check_assign (inst, inst_env);
- /* Get the new value for the the PC. */
+ /* Get the new value for the PC. */
newpc =
read_memory_unsigned_integer ((CORE_ADDR) inst_env->prefix_value,
4, inst_env->byte_order);
return print_insn (addr, info);
}
-/*
Copied from <asm/elf.h>. */
-typedef unsigned long elf_greg_t;
+/*
Originally from <asm/elf.h>. */
+typedef unsigned char cris_elf_greg_t[4];
/* Same as user_regs_struct struct in <asm/user.h>. */
#define CRISV10_ELF_NGREG 35
-typedef elf_greg_t elf_gregset_t[CRISV10_ELF_NGREG];
+typedef cris_elf_greg_t cris_elf_gregset_t[CRISV10_ELF_NGREG];
#define CRISV32_ELF_NGREG 32
-typedef elf_greg_t crisv32_elf_gregset_t[CRISV32_ELF_NGREG];
+typedef cris_elf_greg_t crisv32_elf_gregset_t[CRISV32_ELF_NGREG];
-/* Unpack an elf_gregset_t into GDB's register cache. */
+/* Unpack a cris_elf_gregset_t into GDB's register cache. */
static void
-cris_supply_gregset (struct regcache *regcache, elf_gregset_t *gregsetp)
+cris_supply_gregset (struct regcache *regcache, cris_elf_gregset_t *gregsetp)
{
struct gdbarch *gdbarch = get_regcache_arch (regcache);
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
int i;
- elf_greg_t *regp = *gregsetp;
- static char zerobuf[4] = {0};
+ cris_elf_greg_t *regp = *gregsetp;
/* The kernel dumps all 32 registers as unsigned longs, but supply_register
knows about the actual size of each register so that's no problem. */
char *core_reg_sect, unsigned core_reg_size,
int which, CORE_ADDR reg_addr)
{
- elf_gregset_t gregset;
+ cris_elf_gregset_t gregset;
switch (which)
{
case 0:
- if (core_reg_size != sizeof (elf_gregset_t)
+ if (core_reg_size != sizeof (cris_elf_gregset_t)
&& core_reg_size != sizeof (crisv32_elf_gregset_t))
{
warning (_("wrong size gregset struct in core file"));
void
_initialize_cris_tdep (void)
{
- static struct cmd_list_element *cris_set_cmdlist;
- static struct cmd_list_element *cris_show_cmdlist;
-
struct cmd_list_element *c;
gdbarch_register (bfd_arch_cris, cris_gdbarch_init, cris_dump_tdep);
/* CRIS-specific user-commands. */
- add_setshow_uinteger_cmd ("cris-version", class_support,
- &usr_cmd_cris_version,
- _("Set the current CRIS version."),
- _("Show the current CRIS version."),
- _("\
+ add_setshow_zuinteger_cmd ("cris-version", class_support,
+ &usr_cmd_cris_version,
+ _("Set the current CRIS version."),
+ _("Show the current CRIS version."),
+ _("\
Set to 10 for CRISv10 or 32 for CRISv32 if autodetection fails.\n\
Defaults to 10. "),
- set_cris_version,
- NULL, /* FIXME: i18n: Current CRIS version
- is %s. */
- &setlist, &showlist);
+ set_cris_version,
+ NULL, /* FIXME: i18n: Current CRIS version
+ is %s. */
+ &setlist, &showlist);
add_setshow_enum_cmd ("cris-mode", class_support,
cris_modes, &usr_cmd_cris_mode,
{
struct gdbarch *gdbarch;
struct gdbarch_tdep *tdep;
- int cris_version;
+ unsigned int cris_version;
if (usr_cmd_cris_version_valid)
{
frame_unwind_append_unwinder (gdbarch, &cris_frame_unwind);
frame_base_set_default (gdbarch, &cris_frame_base);
- set_solib_svr4_fetch_link_map_offsets
- (gdbarch, svr4_ilp32_fetch_link_map_offsets);
-
+ /* Hook in ABI-specific overrides, if they have been registered. */
+ gdbarch_init_osabi (info, gdbarch);
+
/* FIXME: cagney/2003-08-27: It should be possible to select a CRIS
disassembler, even when there is no BFD. Does something like
"gdb; target remote; disassmeble *0x123" work? */
projects / platform / upstream / binutils.git / blobdiff