/* Target-dependent code for GDB, the GNU debugger.
- Copyright (C) 1986, 1987, 1989, 1991, 1992, 1993, 1994, 1995, 1996, 1997,
- 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
- 2010, 2011 Free Software Foundation, Inc.
+ Copyright (C) 1986-1987, 1989, 1991-2012 Free Software Foundation,
+ Inc.
This file is part of GDB.
/* Determine if regnum is a POWER7 Extended FP register. */
#define IS_EFP_PSEUDOREG(tdep, regnum) ((tdep)->ppc_efpr0_regnum >= 0 \
&& (regnum) >= (tdep)->ppc_efpr0_regnum \
- && (regnum) < (tdep)->ppc_efpr0_regnum + ppc_num_fprs)
+ && (regnum) < (tdep)->ppc_efpr0_regnum + ppc_num_efprs)
/* The list of available "set powerpc ..." and "show powerpc ..."
commands. */
static enum auto_boolean powerpc_soft_float_global = AUTO_BOOLEAN_AUTO;
/* The vector ABI to use. Keep this in sync with powerpc_vector_abi. */
-static const char *powerpc_vector_strings[] =
+static const char *const powerpc_vector_strings[] =
{
"auto",
"generic",
its destination address. */
if ((insn & BRANCH_MASK) == BC_INSN)
{
- int immediate = ((insn & ~3) << 16) >> 16;
- int absolute = ((insn >> 1) & 1);
+ int immediate = ((insn & 0xfffc) ^ 0x8000) - 0x8000;
+ int absolute = insn & 2;
if (bc_insn_count >= 1)
return 0; /* More than one conditional branch found, fallback
if (absolute)
breaks[1] = immediate;
else
- breaks[1] = pc + immediate;
+ breaks[1] = loc + immediate;
bc_insn_count++;
last_breakpoint++;
breaks[0] = loc;
/* Check for duplicated breakpoints. Check also for a breakpoint
- placed (branch instruction's destination) at the stwcx/stdcx
- instruction, this resets the reservation and take us back to the
- lwarx/ldarx instruction at the beginning of the atomic sequence. */
- if (last_breakpoint && ((breaks[1] == breaks[0])
- || (breaks[1] == closing_insn)))
+ placed (branch instruction's destination) anywhere in sequence. */
+ if (last_breakpoint
+ && (breaks[1] == breaks[0]
+ || (breaks[1] >= pc && breaks[1] <= closing_insn)))
last_breakpoint = 0;
/* Effectively inserts the breakpoints. */
/* Set up frame pointer */
}
+ else if (op == 0x603d0000) /* oril r29, r1, 0x0 */
+ {
+ fdata->frameless = 0;
+ framep = 1;
+ fdata->alloca_reg = (tdep->ppc_gp0_regnum + 29);
+ continue;
+
+ /* Another way to set up the frame pointer. */
+ }
else if (op == 0x603f0000 /* oril r31, r1, 0x0 */
|| op == 0x7c3f0b78)
{ /* mr r31, r1 */
rs6000_skip_prologue (struct gdbarch *gdbarch, CORE_ADDR pc)
{
struct rs6000_framedata frame;
- CORE_ADDR limit_pc, func_addr;
+ CORE_ADDR limit_pc, func_addr, func_end_addr = 0;
/* See if we can determine the end of the prologue via the symbol table.
If so, then return either PC, or the PC after the prologue, whichever
is greater. */
- if (find_pc_partial_function (pc, NULL, &func_addr, NULL))
+ if (find_pc_partial_function (pc, NULL, &func_addr, &func_end_addr))
{
CORE_ADDR post_prologue_pc
= skip_prologue_using_sal (gdbarch, func_addr);
if (limit_pc == 0)
limit_pc = pc + 100; /* Magic. */
+ /* Do not allow limit_pc to be past the function end, if we know
+ where that end is... */
+ if (func_end_addr && limit_pc > func_end_addr)
+ limit_pc = func_end_addr;
+
pc = skip_prologue (gdbarch, pc, limit_pc, &frame);
return pc;
}
static int
rs6000_in_solib_return_trampoline (struct gdbarch *gdbarch,
- CORE_ADDR pc, char *name)
+ CORE_ADDR pc, const char *name)
{
return name && !strncmp (name, "@FIX", 4);
}
!= TYPE_LENGTH (builtin_type (gdbarch)->builtin_double));
}
-static void
+static int
rs6000_register_to_value (struct frame_info *frame,
int regnum,
struct type *type,
- gdb_byte *to)
+ gdb_byte *to,
+ int *optimizedp, int *unavailablep)
{
struct gdbarch *gdbarch = get_frame_arch (frame);
gdb_byte from[MAX_REGISTER_SIZE];
gdb_assert (TYPE_CODE (type) == TYPE_CODE_FLT);
- get_frame_register (frame, regnum, from);
+ if (!get_frame_register_bytes (frame, regnum, 0,
+ register_size (gdbarch, regnum),
+ from, optimizedp, unavailablep))
+ return 0;
+
convert_typed_floating (from, builtin_type (gdbarch)->builtin_double,
to, type);
+ *optimizedp = *unavailablep = 0;
+ return 1;
}
static void
put_frame_register (frame, regnum, to);
}
+ /* The type of a function that moves the value of REG between CACHE
+ or BUF --- in either direction. */
+typedef enum register_status (*move_ev_register_func) (struct regcache *,
+ int, void *);
+
/* Move SPE vector register values between a 64-bit buffer and the two
32-bit raw register halves in a regcache. This function handles
both splitting a 64-bit value into two 32-bit halves, and joining
MOVE, since this function can't tell at compile-time which of
REGCACHE or BUFFER is acting as the source of the data. If C had
co-variant type qualifiers, ... */
-static void
-e500_move_ev_register (void (*move) (struct regcache *regcache,
- int regnum, gdb_byte *buf),
- struct regcache *regcache, int ev_reg,
- gdb_byte *buffer)
+
+static enum register_status
+e500_move_ev_register (move_ev_register_func move,
+ struct regcache *regcache, int ev_reg, void *buffer)
{
struct gdbarch *arch = get_regcache_arch (regcache);
struct gdbarch_tdep *tdep = gdbarch_tdep (arch);
int reg_index;
gdb_byte *byte_buffer = buffer;
+ enum register_status status;
gdb_assert (IS_SPE_PSEUDOREG (tdep, ev_reg));
if (gdbarch_byte_order (arch) == BFD_ENDIAN_BIG)
{
- move (regcache, tdep->ppc_ev0_upper_regnum + reg_index, byte_buffer);
- move (regcache, tdep->ppc_gp0_regnum + reg_index, byte_buffer + 4);
+ status = move (regcache, tdep->ppc_ev0_upper_regnum + reg_index,
+ byte_buffer);
+ if (status == REG_VALID)
+ status = move (regcache, tdep->ppc_gp0_regnum + reg_index,
+ byte_buffer + 4);
}
else
{
- move (regcache, tdep->ppc_gp0_regnum + reg_index, byte_buffer);
- move (regcache, tdep->ppc_ev0_upper_regnum + reg_index, byte_buffer + 4);
+ status = move (regcache, tdep->ppc_gp0_regnum + reg_index, byte_buffer);
+ if (status == REG_VALID)
+ status = move (regcache, tdep->ppc_ev0_upper_regnum + reg_index,
+ byte_buffer + 4);
}
+
+ return status;
}
-static void
+static enum register_status
+do_regcache_raw_read (struct regcache *regcache, int regnum, void *buffer)
+{
+ return regcache_raw_read (regcache, regnum, buffer);
+}
+
+static enum register_status
+do_regcache_raw_write (struct regcache *regcache, int regnum, void *buffer)
+{
+ regcache_raw_write (regcache, regnum, buffer);
+
+ return REG_VALID;
+}
+
+static enum register_status
e500_pseudo_register_read (struct gdbarch *gdbarch, struct regcache *regcache,
int reg_nr, gdb_byte *buffer)
{
- e500_move_ev_register (regcache_raw_read, regcache, reg_nr, buffer);
+ return e500_move_ev_register (do_regcache_raw_read, regcache, reg_nr, buffer);
}
static void
e500_pseudo_register_write (struct gdbarch *gdbarch, struct regcache *regcache,
int reg_nr, const gdb_byte *buffer)
{
- e500_move_ev_register ((void (*) (struct regcache *, int, gdb_byte *))
- regcache_raw_write,
- regcache, reg_nr, (gdb_byte *) buffer);
+ e500_move_ev_register (do_regcache_raw_write, regcache,
+ reg_nr, (void *) buffer);
}
/* Read method for DFP pseudo-registers. */
-static void
+static enum register_status
dfp_pseudo_register_read (struct gdbarch *gdbarch, struct regcache *regcache,
int reg_nr, gdb_byte *buffer)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
int reg_index = reg_nr - tdep->ppc_dl0_regnum;
+ enum register_status status;
if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG)
{
/* Read two FP registers to form a whole dl register. */
- regcache_raw_read (regcache, tdep->ppc_fp0_regnum +
- 2 * reg_index, buffer);
- regcache_raw_read (regcache, tdep->ppc_fp0_regnum +
- 2 * reg_index + 1, buffer + 8);
+ status = regcache_raw_read (regcache, tdep->ppc_fp0_regnum +
+ 2 * reg_index, buffer);
+ if (status == REG_VALID)
+ status = regcache_raw_read (regcache, tdep->ppc_fp0_regnum +
+ 2 * reg_index + 1, buffer + 8);
}
else
{
- regcache_raw_read (regcache, tdep->ppc_fp0_regnum +
- 2 * reg_index + 1, buffer + 8);
- regcache_raw_read (regcache, tdep->ppc_fp0_regnum +
- 2 * reg_index, buffer);
+ status = regcache_raw_read (regcache, tdep->ppc_fp0_regnum +
+ 2 * reg_index + 1, buffer + 8);
+ if (status == REG_VALID)
+ status = regcache_raw_read (regcache, tdep->ppc_fp0_regnum +
+ 2 * reg_index, buffer);
}
+
+ return status;
}
/* Write method for DFP pseudo-registers. */
}
/* Read method for POWER7 VSX pseudo-registers. */
-static void
+static enum register_status
vsx_pseudo_register_read (struct gdbarch *gdbarch, struct regcache *regcache,
int reg_nr, gdb_byte *buffer)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
int reg_index = reg_nr - tdep->ppc_vsr0_regnum;
+ enum register_status status;
/* Read the portion that overlaps the VMX registers. */
if (reg_index > 31)
- regcache_raw_read (regcache, tdep->ppc_vr0_regnum +
- reg_index - 32, buffer);
+ status = regcache_raw_read (regcache, tdep->ppc_vr0_regnum +
+ reg_index - 32, buffer);
else
/* Read the portion that overlaps the FPR registers. */
if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG)
{
- regcache_raw_read (regcache, tdep->ppc_fp0_regnum +
- reg_index, buffer);
- regcache_raw_read (regcache, tdep->ppc_vsr0_upper_regnum +
- reg_index, buffer + 8);
+ status = regcache_raw_read (regcache, tdep->ppc_fp0_regnum +
+ reg_index, buffer);
+ if (status == REG_VALID)
+ status = regcache_raw_read (regcache, tdep->ppc_vsr0_upper_regnum +
+ reg_index, buffer + 8);
}
else
{
- regcache_raw_read (regcache, tdep->ppc_fp0_regnum +
- reg_index, buffer + 8);
- regcache_raw_read (regcache, tdep->ppc_vsr0_upper_regnum +
- reg_index, buffer);
+ status = regcache_raw_read (regcache, tdep->ppc_fp0_regnum +
+ reg_index, buffer + 8);
+ if (status == REG_VALID)
+ status = regcache_raw_read (regcache, tdep->ppc_vsr0_upper_regnum +
+ reg_index, buffer);
}
+
+ return status;
}
/* Write method for POWER7 VSX pseudo-registers. */
}
/* Read method for POWER7 Extended FP pseudo-registers. */
-static void
+static enum register_status
efpr_pseudo_register_read (struct gdbarch *gdbarch, struct regcache *regcache,
int reg_nr, gdb_byte *buffer)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
int reg_index = reg_nr - tdep->ppc_efpr0_regnum;
- /* Read the portion that overlaps the VMX registers. */
- regcache_raw_read (regcache, tdep->ppc_vr0_regnum +
- reg_index, buffer);
+ /* Read the portion that overlaps the VMX register. */
+ return regcache_raw_read_part (regcache, tdep->ppc_vr0_regnum + reg_index, 0,
+ register_size (gdbarch, reg_nr), buffer);
}
/* Write method for POWER7 Extended FP pseudo-registers. */
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
int reg_index = reg_nr - tdep->ppc_efpr0_regnum;
- /* Write the portion that overlaps the VMX registers. */
- regcache_raw_write (regcache, tdep->ppc_vr0_regnum +
- reg_index, buffer);
+ /* Write the portion that overlaps the VMX register. */
+ regcache_raw_write_part (regcache, tdep->ppc_vr0_regnum + reg_index, 0,
+ register_size (gdbarch, reg_nr), buffer);
}
-static void
+static enum register_status
rs6000_pseudo_register_read (struct gdbarch *gdbarch,
struct regcache *regcache,
int reg_nr, gdb_byte *buffer)
gdb_assert (regcache_arch == gdbarch);
if (IS_SPE_PSEUDOREG (tdep, reg_nr))
- e500_pseudo_register_read (gdbarch, regcache, reg_nr, buffer);
+ return e500_pseudo_register_read (gdbarch, regcache, reg_nr, buffer);
else if (IS_DFP_PSEUDOREG (tdep, reg_nr))
- dfp_pseudo_register_read (gdbarch, regcache, reg_nr, buffer);
+ return dfp_pseudo_register_read (gdbarch, regcache, reg_nr, buffer);
else if (IS_VSX_PSEUDOREG (tdep, reg_nr))
- vsx_pseudo_register_read (gdbarch, regcache, reg_nr, buffer);
+ return vsx_pseudo_register_read (gdbarch, regcache, reg_nr, buffer);
else if (IS_EFP_PSEUDOREG (tdep, reg_nr))
- efpr_pseudo_register_read (gdbarch, regcache, reg_nr, buffer);
+ return efpr_pseudo_register_read (gdbarch, regcache, reg_nr, buffer);
else
internal_error (__FILE__, __LINE__,
_("rs6000_pseudo_register_read: "
static const struct frame_unwind rs6000_frame_unwind =
{
NORMAL_FRAME,
+ default_frame_unwind_stop_reason,
rs6000_frame_this_id,
rs6000_frame_prev_register,
NULL,
enum bfd_architecture arch;
unsigned long mach;
bfd abfd;
- asection *sect;
enum auto_boolean soft_float_flag = powerpc_soft_float_global;
int soft_float;
enum powerpc_vector_abi vector_abi = powerpc_vector_abi_global;
/* Update the architecture. */
gdbarch_info_init (&info);
if (!gdbarch_update_p (info))
- internal_error (__FILE__, __LINE__, "could not update architecture");
+ internal_error (__FILE__, __LINE__, _("could not update architecture"));
}
static void
/* Update the architecture. */
gdbarch_info_init (&info);
if (!gdbarch_update_p (info))
- internal_error (__FILE__, __LINE__, "could not update architecture");
+ internal_error (__FILE__, __LINE__, _("could not update architecture"));
+}
+
+/* Show the current setting of the exact watchpoints flag. */
+
+static void
+show_powerpc_exact_watchpoints (struct ui_file *file, int from_tty,
+ struct cmd_list_element *c,
+ const char *value)
+{
+ fprintf_filtered (file, _("Use of exact watchpoints is %s.\n"), value);
}
/* Initialization code. */
_("Show the vector ABI."),
NULL, powerpc_set_vector_abi, NULL,
&setpowerpccmdlist, &showpowerpccmdlist);
+
+ add_setshow_boolean_cmd ("exact-watchpoints", class_support,
+ &target_exact_watchpoints,
+ _("\
+Set whether to use just one debug register for watchpoints on scalars."),
+ _("\
+Show whether to use just one debug register for watchpoints on scalars."),
+ _("\
+If true, GDB will use only one debug register when watching a variable of\n\
+scalar type, thus assuming that the variable is accessed through the address\n\
+of its first byte."),
+ NULL, show_powerpc_exact_watchpoints,
+ &setpowerpccmdlist, &showpowerpccmdlist);
}
projects / deliverable / binutils-gdb.git / blobdiff