/* Target-dependent code for the Xtensa port of GDB, the GNU debugger.
- Copyright (C) 2003-2015 Free Software Foundation, Inc.
+ Copyright (C) 2003-2016 Free Software Foundation, Inc.
This file is part of GDB.
#include "value.h"
#include "dis-asm.h"
#include "inferior.h"
+#include "osabi.h"
#include "floatformat.h"
#include "regcache.h"
#include "reggroups.h"
#include "xtensa-isa.h"
#include "xtensa-tdep.h"
#include "xtensa-config.h"
+#include <algorithm>
static unsigned int xtensa_debug_level = 0;
if (tp == NULL)
{
char *name = xstrprintf ("int%d", size * 8);
- tp = xmalloc (sizeof (struct ctype_cache));
+
+ tp = XNEW (struct ctype_cache);
tp->next = tdep->type_entries;
tdep->type_entries = tp;
tp->size = size;
if (regnum == gdbarch_tdep (gdbarch)->regmap[i].target_number)
return i;
- internal_error (__FILE__, __LINE__,
- _("invalid dwarf/stabs register number %d"), regnum);
- return 0;
+ return -1;
}
DEBUGTRACE ("xtensa_pseudo_register_read (... regnum = %d (%s) ...)\n",
regnum, xtensa_register_name (gdbarch, regnum));
- if (regnum == gdbarch_num_regs (gdbarch)
- + gdbarch_num_pseudo_regs (gdbarch) - 1)
- regnum = gdbarch_tdep (gdbarch)->a0_base + 1;
-
/* Read aliases a0..a15, if this is a Windowed ABI. */
if (gdbarch_tdep (gdbarch)->isa_use_windowed_registers
&& (regnum >= gdbarch_tdep (gdbarch)->a0_base)
DEBUGTRACE ("xtensa_pseudo_register_write (... regnum = %d (%s) ...)\n",
regnum, xtensa_register_name (gdbarch, regnum));
- if (regnum == gdbarch_num_regs (gdbarch)
- + gdbarch_num_pseudo_regs (gdbarch) -1)
- regnum = gdbarch_tdep (gdbarch)->a0_base + 1;
-
/* Renumber register, if aliase a0..a15 on Windowed ABI. */
if (gdbarch_tdep (gdbarch)->isa_use_windowed_registers
&& (regnum >= gdbarch_tdep (gdbarch)->a0_base)
const void *gregs,
size_t len)
{
- const xtensa_elf_gregset_t *regs = gregs;
+ const xtensa_elf_gregset_t *regs = (const xtensa_elf_gregset_t *) gregs;
struct gdbarch *gdbarch = get_regcache_arch (rc);
int i;
int windowed, ps_regnum;
if (*this_cache)
- return *this_cache;
+ return (struct xtensa_frame_cache *) *this_cache;
pc = get_frame_register_unsigned (this_frame, gdbarch_pc_regnum (gdbarch));
ps_regnum = gdbarch_ps_regnum (gdbarch);
if (windowed)
{
- char op1;
+ LONGEST op1;
/* Get WINDOWBASE, WINDOWSTART, and PS registers. */
wb = get_frame_register_unsigned (this_frame,
ws = get_frame_register_unsigned (this_frame,
gdbarch_tdep (gdbarch)->ws_regnum);
- op1 = read_memory_integer (pc, 1, byte_order);
- if (XTENSA_IS_ENTRY (gdbarch, op1))
+ if (safe_read_memory_integer (pc, 1, byte_order, &op1)
+ && XTENSA_IS_ENTRY (gdbarch, op1))
{
int callinc = CALLINC (ps);
ra = get_frame_register_unsigned
if (*this_cache == NULL)
*this_cache = xtensa_frame_cache (this_frame, this_cache);
- cache = *this_cache;
+ cache = (struct xtensa_frame_cache *) *this_cache;
if (regnum ==gdbarch_pc_regnum (gdbarch))
saved_reg = cache->ra;
void *dst)
{
struct gdbarch *gdbarch = get_regcache_arch (regcache);
- bfd_byte *valbuf = dst;
+ bfd_byte *valbuf = (bfd_byte *) dst;
int len = TYPE_LENGTH (type);
ULONGEST pc, wb;
int callsize, areg;
const void *dst)
{
struct gdbarch *gdbarch = get_regcache_arch (regcache);
- const bfd_byte *valbuf = dst;
+ const bfd_byte *valbuf = (const bfd_byte *) dst;
unsigned int areg;
ULONGEST pc, wb;
int callsize;
return sp + SP_ALIGNMENT;
}
+/* Implement the breakpoint_kind_from_pc gdbarch method. */
+
+static int
+xtensa_breakpoint_kind_from_pc (struct gdbarch *gdbarch, CORE_ADDR *pcptr)
+{
+ if (gdbarch_tdep (gdbarch)->isa_use_density_instructions)
+ return 2;
+ else
+ return 4;
+}
/* Return a breakpoint for the current location of PC. We always use
the density version if we have density instructions (regardless of the
#define DENSITY_BIG_BREAKPOINT { 0xd2, 0x0f }
#define DENSITY_LITTLE_BREAKPOINT { 0x2d, 0xf0 }
-static const unsigned char *
-xtensa_breakpoint_from_pc (struct gdbarch *gdbarch, CORE_ADDR *pcptr,
- int *lenptr)
-{
- static unsigned char big_breakpoint[] = BIG_BREAKPOINT;
- static unsigned char little_breakpoint[] = LITTLE_BREAKPOINT;
- static unsigned char density_big_breakpoint[] = DENSITY_BIG_BREAKPOINT;
- static unsigned char density_little_breakpoint[] = DENSITY_LITTLE_BREAKPOINT;
+/* Implement the sw_breakpoint_from_kind gdbarch method. */
- DEBUGTRACE ("xtensa_breakpoint_from_pc (pc = 0x%08x)\n", (int) *pcptr);
+static const gdb_byte *
+xtensa_sw_breakpoint_from_kind (struct gdbarch *gdbarch, int kind, int *size)
+{
+ *size = kind;
- if (gdbarch_tdep (gdbarch)->isa_use_density_instructions)
+ if (kind == 4)
{
+ static unsigned char big_breakpoint[] = BIG_BREAKPOINT;
+ static unsigned char little_breakpoint[] = LITTLE_BREAKPOINT;
+
if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG)
- {
- *lenptr = sizeof (density_big_breakpoint);
- return density_big_breakpoint;
- }
+ return big_breakpoint;
else
- {
- *lenptr = sizeof (density_little_breakpoint);
- return density_little_breakpoint;
- }
+ return little_breakpoint;
}
else
{
+ static unsigned char density_big_breakpoint[] = DENSITY_BIG_BREAKPOINT;
+ static unsigned char density_little_breakpoint[]
+ = DENSITY_LITTLE_BREAKPOINT;
+
if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG)
- {
- *lenptr = sizeof (big_breakpoint);
- return big_breakpoint;
- }
+ return density_big_breakpoint;
else
- {
- *lenptr = sizeof (little_breakpoint);
- return little_breakpoint;
- }
+ return density_little_breakpoint;
}
}
arg was not supplied to avoid probing beyond the end of valid memory.
If memory is full of garbage that classifies as c0opc_uninteresting.
If this fails (eg. if no symbols) pc ends up 0 as it was.
- Intialize the Call0 frame and register tracking info.
+ Initialize the Call0 frame and register tracking info.
Assume it's Call0 until an 'entry' instruction is encountered.
Assume we may be in the prologue until we hit a flow control instr. */
if (pc == 0)
{
find_pc_partial_function (start, 0, NULL, &end_pc);
- body_pc = min (end_pc, body_pc);
+ body_pc = std::min (end_pc, body_pc);
}
else
- body_pc = min (pc, body_pc);
+ body_pc = std::min (pc, body_pc);
cache->call0 = 1;
rtmp = (xtensa_c0reg_t*) alloca(nregs * sizeof(xtensa_c0reg_t));
int ilen, islots, is;
xtensa_opcode opc;
int insn_num = 0;
- int fail = 0;
void (*func) (struct gdbarch *, int, int, int, CORE_ADDR);
uint32_t at, as, offset;
struct ui_file *log;
struct cleanup *cleanups;
struct gdbarch_tdep *tdep;
- long length;
- char *buf;
tdep = gdbarch_tdep (gdbarch);
log = mem_fileopen ();
if (tdep->a0_base == -1)
fprintf_unfiltered (log, _("\n\ta0_base: No Ax registers"));
- buf = ui_file_xstrdup (log, &length);
- make_cleanup (xfree, buf);
- if (length > 0)
+ std::string buf = ui_file_as_string (log);
+ if (!buf.empty ())
internal_error (__FILE__, __LINE__,
- _("the following are invalid: %s"), buf);
+ _("the following are invalid: %s"), buf.c_str ());
do_cleanups (cleanups);
}
{
struct gdbarch_tdep *tdep;
struct gdbarch *gdbarch;
- struct xtensa_abi_handler *abi_handler;
DEBUGTRACE ("gdbarch_init()\n");
set_gdbarch_inner_than (gdbarch, core_addr_lessthan);
/* Set breakpoints. */
- set_gdbarch_breakpoint_from_pc (gdbarch, xtensa_breakpoint_from_pc);
+ set_gdbarch_breakpoint_kind_from_pc (gdbarch,
+ xtensa_breakpoint_kind_from_pc);
+ set_gdbarch_sw_breakpoint_from_kind (gdbarch,
+ xtensa_sw_breakpoint_from_kind);
/* After breakpoint instruction or illegal instruction, pc still
points at break instruction, so don't decrement. */
set_solib_svr4_fetch_link_map_offsets
(gdbarch, svr4_ilp32_fetch_link_map_offsets);
+ /* Hook in the ABI-specific overrides, if they have been registered. */
+ gdbarch_init_osabi (info, gdbarch);
+
return gdbarch;
}
void
_initialize_xtensa_tdep (void)
{
- struct cmd_list_element *c;
-
gdbarch_register (bfd_arch_xtensa, xtensa_gdbarch_init, xtensa_dump_tdep);
xtensa_init_reggroups ();
projects / deliverable / binutils-gdb.git / blobdiff