/* Dynamic architecture support for GDB, the GNU debugger.
- Copyright 1998, 1999, 2000, 2001, 2002 Free Software Foundation,
+ Copyright 1998, 1999, 2000, 2001, 2002, 2003 Free Software Foundation,
Inc.
This file is part of GDB.
#include "defs.h"
-#if GDB_MULTI_ARCH
#include "arch-utils.h"
+#include "buildsym.h"
#include "gdbcmd.h"
#include "inferior.h" /* enum CALL_DUMMY_LOCATION et.al. */
-#else
-/* Just include everything in sight so that the every old definition
- of macro is visible. */
-#include "symtab.h"
-#include "frame.h"
-#include "inferior.h"
-#include "breakpoint.h"
-#include "gdb_wait.h"
-#include "gdbcore.h"
-#include "gdbcmd.h"
-#include "target.h"
-#include "annotate.h"
-#endif
#include "gdb_string.h"
#include "regcache.h"
#include "gdb_assert.h"
#include "floatformat.h"
-/* Use the program counter to determine the contents and size
- of a breakpoint instruction. If no target-dependent macro
- BREAKPOINT_FROM_PC has been defined to implement this function,
- assume that the breakpoint doesn't depend on the PC, and
- use the values of the BIG_BREAKPOINT and LITTLE_BREAKPOINT macros.
- Return a pointer to a string of bytes that encode a breakpoint
- instruction, stores the length of the string to *lenptr,
- and optionally adjust the pc to point to the correct memory location
- for inserting the breakpoint. */
-
-const unsigned char *
-legacy_breakpoint_from_pc (CORE_ADDR * pcptr, int *lenptr)
-{
- /* {BIG_,LITTLE_}BREAKPOINT is the sequence of bytes we insert for a
- breakpoint. On some machines, breakpoints are handled by the
- target environment and we don't have to worry about them here. */
-#ifdef BIG_BREAKPOINT
- if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG)
- {
- static unsigned char big_break_insn[] = BIG_BREAKPOINT;
- *lenptr = sizeof (big_break_insn);
- return big_break_insn;
- }
-#endif
-#ifdef LITTLE_BREAKPOINT
- if (TARGET_BYTE_ORDER != BFD_ENDIAN_BIG)
- {
- static unsigned char little_break_insn[] = LITTLE_BREAKPOINT;
- *lenptr = sizeof (little_break_insn);
- return little_break_insn;
- }
-#endif
-#ifdef BREAKPOINT
- {
- static unsigned char break_insn[] = BREAKPOINT;
- *lenptr = sizeof (break_insn);
- return break_insn;
- }
-#endif
- *lenptr = 0;
- return NULL;
-}
-
/* Implementation of extract return value that grubs around in the
register cache. */
void
legacy_extract_return_value (struct type *type, struct regcache *regcache,
- char *valbuf)
+ void *valbuf)
{
char *registers = deprecated_grub_regcache_for_registers (regcache);
- DEPRECATED_EXTRACT_RETURN_VALUE (type, registers, valbuf);
+ bfd_byte *buf = valbuf;
+ DEPRECATED_EXTRACT_RETURN_VALUE (type, registers, buf); /* OK */
+}
+
+/* Implementation of store return value that grubs the register cache.
+ Takes a local copy of the buffer to avoid const problems. */
+void
+legacy_store_return_value (struct type *type, struct regcache *regcache,
+ const void *buf)
+{
+ bfd_byte *b = alloca (TYPE_LENGTH (type));
+ gdb_assert (regcache == current_regcache);
+ memcpy (b, buf, TYPE_LENGTH (type));
+ DEPRECATED_STORE_RETURN_VALUE (type, b);
+}
+
+
+int
+always_use_struct_convention (int gcc_p, struct type *value_type)
+{
+ return 1;
}
+
int
legacy_register_sim_regno (int regnum)
{
return 0;
}
-const char *
-legacy_register_name (int i)
-{
-#ifdef REGISTER_NAMES
- static char *names[] = REGISTER_NAMES;
- if (i < 0 || i >= (sizeof (names) / sizeof (*names)))
- return NULL;
- else
- return names[i];
-#else
- internal_error (__FILE__, __LINE__,
- "legacy_register_name: called.");
- return NULL;
-#endif
-}
-
#if defined (CALL_DUMMY)
LONGEST legacy_call_dummy_words[] = CALL_DUMMY;
#else
int legacy_sizeof_call_dummy_words = sizeof (legacy_call_dummy_words);
void
-generic_remote_translate_xfer_address (CORE_ADDR gdb_addr, int gdb_len,
+generic_remote_translate_xfer_address (struct gdbarch *gdbarch,
+ struct regcache *regcache,
+ CORE_ADDR gdb_addr, int gdb_len,
CORE_ADDR * rem_addr, int *rem_len)
{
*rem_addr = gdb_addr;
return ip == SKIP_PROLOGUE (ip);
}
-/* New/multi-arched targets should use the correct gdbarch field
- instead of using this global pointer. */
-int
-legacy_print_insn (bfd_vma vma, disassemble_info *info)
-{
- return (*tm_print_insn) (vma, info);
-}
-
/* Helper functions for INNER_THAN */
int
const struct floatformat *
default_float_format (struct gdbarch *gdbarch)
{
-#if GDB_MULTI_ARCH
int byte_order = gdbarch_byte_order (gdbarch);
-#else
- int byte_order = TARGET_BYTE_ORDER;
-#endif
switch (byte_order)
{
case BFD_ENDIAN_BIG:
const struct floatformat *
default_double_format (struct gdbarch *gdbarch)
{
-#if GDB_MULTI_ARCH
int byte_order = gdbarch_byte_order (gdbarch);
-#else
- int byte_order = TARGET_BYTE_ORDER;
-#endif
switch (byte_order)
{
case BFD_ENDIAN_BIG:
/* Misc helper functions for targets. */
int
-frame_num_args_unknown (struct frame_info *fi)
-{
- return -1;
-}
-
-
-int
-generic_register_convertible_not (int num)
+deprecated_register_convertible_not (int num)
{
return 0;
}
return reg;
}
-/* For use by frame_args_address and frame_locals_address. */
CORE_ADDR
-default_frame_address (struct frame_info *fi)
-{
- return fi->frame;
-}
-
-/* Default prepare_to_procced(). */
-int
-default_prepare_to_proceed (int select_it)
-{
- return 0;
-}
-
-/* Generic prepare_to_proceed(). This one should be suitable for most
- targets that support threads. */
-int
-generic_prepare_to_proceed (int select_it)
-{
- ptid_t wait_ptid;
- struct target_waitstatus wait_status;
-
- /* Get the last target status returned by target_wait(). */
- get_last_target_status (&wait_ptid, &wait_status);
-
- /* Make sure we were stopped either at a breakpoint, or because
- of a Ctrl-C. */
- if (wait_status.kind != TARGET_WAITKIND_STOPPED
- || (wait_status.value.sig != TARGET_SIGNAL_TRAP &&
- wait_status.value.sig != TARGET_SIGNAL_INT))
- {
- return 0;
- }
-
- if (!ptid_equal (wait_ptid, minus_one_ptid)
- && !ptid_equal (inferior_ptid, wait_ptid))
- {
- /* Switched over from WAIT_PID. */
- CORE_ADDR wait_pc = read_pc_pid (wait_ptid);
-
- if (wait_pc != read_pc ())
- {
- if (select_it)
- {
- /* Switch back to WAIT_PID thread. */
- inferior_ptid = wait_ptid;
-
- /* FIXME: This stuff came from switch_to_thread() in
- thread.c (which should probably be a public function). */
- flush_cached_frames ();
- registers_changed ();
- stop_pc = wait_pc;
- select_frame (get_current_frame ());
- }
- /* We return 1 to indicate that there is a breakpoint here,
- so we need to step over it before continuing to avoid
- hitting it straight away. */
- if (breakpoint_here_p (wait_pc))
- {
- return 1;
- }
- }
- }
- return 0;
-
-}
-
-void
-init_frame_pc_noop (int fromleaf, struct frame_info *prev)
-{
- return;
-}
-
-void
-init_frame_pc_default (int fromleaf, struct frame_info *prev)
+deprecated_init_frame_pc_default (int fromleaf, struct frame_info *prev)
{
- if (fromleaf)
- prev->pc = SAVED_PC_AFTER_CALL (prev->next);
- else if (prev->next != NULL)
- prev->pc = FRAME_SAVED_PC (prev->next);
+ if (fromleaf && DEPRECATED_SAVED_PC_AFTER_CALL_P ())
+ return DEPRECATED_SAVED_PC_AFTER_CALL (get_next_frame (prev));
+ else if (get_next_frame (prev) != NULL)
+ return DEPRECATED_FRAME_SAVED_PC (get_next_frame (prev));
else
- prev->pc = read_pc ();
+ return read_pc ();
}
void
}
/* Legacy version of target_virtual_frame_pointer(). Assumes that
- there is an FP_REGNUM and that it is the same, cooked or raw. */
+ there is an DEPRECATED_FP_REGNUM and that it is the same, cooked or
+ raw. */
void
legacy_virtual_frame_pointer (CORE_ADDR pc,
int *frame_regnum,
LONGEST *frame_offset)
{
- gdb_assert (FP_REGNUM >= 0);
- *frame_regnum = FP_REGNUM;
+ /* FIXME: cagney/2002-09-13: This code is used when identifying the
+ frame pointer of the current PC. It is assuming that a single
+ register and an offset can determine this. I think it should
+ instead generate a byte code expression as that would work better
+ with things like Dwarf2's CFI. */
+ if (DEPRECATED_FP_REGNUM >= 0 && DEPRECATED_FP_REGNUM < NUM_REGS)
+ *frame_regnum = DEPRECATED_FP_REGNUM;
+ else if (SP_REGNUM >= 0 && SP_REGNUM < NUM_REGS)
+ *frame_regnum = SP_REGNUM;
+ else
+ /* Should this be an internal error? I guess so, it is reflecting
+ an architectural limitation in the current design. */
+ internal_error (__FILE__, __LINE__, "No virtual frame pointer available");
*frame_offset = 0;
}
generic_register_size (int regnum)
{
gdb_assert (regnum >= 0 && regnum < NUM_REGS + NUM_PSEUDO_REGS);
- return TYPE_LENGTH (REGISTER_VIRTUAL_TYPE (regnum));
+ if (gdbarch_register_type_p (current_gdbarch))
+ return TYPE_LENGTH (gdbarch_register_type (current_gdbarch, regnum));
+ else
+ /* FIXME: cagney/2003-03-01: Once all architectures implement
+ gdbarch_register_type(), this entire function can go away. It
+ is made obsolete by register_size(). */
+ return TYPE_LENGTH (DEPRECATED_REGISTER_VIRTUAL_TYPE (regnum)); /* OK */
}
-#if !defined (IN_SIGTRAMP)
-#if defined (SIGTRAMP_START)
-#define IN_SIGTRAMP(pc, name) \
- ((pc) >= SIGTRAMP_START(pc) \
- && (pc) < SIGTRAMP_END(pc) \
- )
-#else
-#define IN_SIGTRAMP(pc, name) \
- (name && STREQ ("_sigtramp", name))
-#endif
-#endif
-
/* Assume all registers are adjacent. */
int
byte = 0;
for (i = 0; i < regnum; i++)
{
- byte += TYPE_LENGTH (REGISTER_VIRTUAL_TYPE (i));
+ byte += generic_register_size (i);
}
return byte;
}
int
legacy_pc_in_sigtramp (CORE_ADDR pc, char *name)
{
- return IN_SIGTRAMP(pc, name);
+#if !defined (IN_SIGTRAMP)
+ if (SIGTRAMP_START_P ())
+ return (pc) >= SIGTRAMP_START (pc) && (pc) < SIGTRAMP_END (pc);
+ else
+ return name && strcmp ("_sigtramp", name) == 0;
+#else
+ return IN_SIGTRAMP (pc, name);
+#endif
}
int
-legacy_convert_register_p (int regnum)
+legacy_convert_register_p (int regnum, struct type *type)
{
- return REGISTER_CONVERTIBLE (regnum);
+ return DEPRECATED_REGISTER_CONVERTIBLE (regnum);
}
void
-legacy_register_to_value (int regnum, struct type *type,
- char *from, char *to)
+legacy_register_to_value (struct frame_info *frame, int regnum,
+ struct type *type, void *to)
{
- REGISTER_CONVERT_TO_VIRTUAL (regnum, type, from, to);
+ char from[MAX_REGISTER_SIZE];
+ get_frame_register (frame, regnum, from);
+ DEPRECATED_REGISTER_CONVERT_TO_VIRTUAL (regnum, type, from, to);
}
void
-legacy_value_to_register (struct type *type, int regnum,
- char *from, char *to)
+legacy_value_to_register (struct frame_info *frame, int regnum,
+ struct type *type, const void *tmp)
{
- REGISTER_CONVERT_TO_RAW (type, regnum, from, to);
+ char to[MAX_REGISTER_SIZE];
+ char *from = alloca (TYPE_LENGTH (type));
+ memcpy (from, from, TYPE_LENGTH (type));
+ DEPRECATED_REGISTER_CONVERT_TO_RAW (type, regnum, from, to);
+ put_frame_register (frame, regnum, to);
+}
+
+int
+default_stabs_argument_has_addr (struct gdbarch *gdbarch, struct type *type)
+{
+ if (DEPRECATED_REG_STRUCT_HAS_ADDR_P ()
+ && DEPRECATED_REG_STRUCT_HAS_ADDR (processing_gcc_compilation, type))
+ {
+ CHECK_TYPEDEF (type);
+
+ return (TYPE_CODE (type) == TYPE_CODE_STRUCT
+ || TYPE_CODE (type) == TYPE_CODE_UNION
+ || TYPE_CODE (type) == TYPE_CODE_SET
+ || TYPE_CODE (type) == TYPE_CODE_BITSTRING);
+ }
+
+ return 0;
}
\f
}
else if (set_endian_string == endian_little)
{
+ struct gdbarch_info info;
target_byte_order_auto = 0;
- if (GDB_MULTI_ARCH)
- {
- struct gdbarch_info info;
- gdbarch_info_init (&info);
- info.byte_order = BFD_ENDIAN_LITTLE;
- if (! gdbarch_update_p (info))
- {
- printf_unfiltered ("Little endian target not supported by GDB\n");
- }
- }
- else
- {
- target_byte_order = BFD_ENDIAN_LITTLE;
- }
+ gdbarch_info_init (&info);
+ info.byte_order = BFD_ENDIAN_LITTLE;
+ if (! gdbarch_update_p (info))
+ printf_unfiltered ("Little endian target not supported by GDB\n");
}
else if (set_endian_string == endian_big)
{
+ struct gdbarch_info info;
target_byte_order_auto = 0;
- if (GDB_MULTI_ARCH)
- {
- struct gdbarch_info info;
- gdbarch_info_init (&info);
- info.byte_order = BFD_ENDIAN_BIG;
- if (! gdbarch_update_p (info))
- {
- printf_unfiltered ("Big endian target not supported by GDB\n");
- }
- }
- else
- {
- target_byte_order = BFD_ENDIAN_BIG;
- }
+ gdbarch_info_init (&info);
+ info.byte_order = BFD_ENDIAN_BIG;
+ if (! gdbarch_update_p (info))
+ printf_unfiltered ("Big endian target not supported by GDB\n");
}
else
internal_error (__FILE__, __LINE__,
show_endian (NULL, from_tty);
}
-/* Set the endianness from a BFD. */
-
-static void
-set_endian_from_file (bfd *abfd)
-{
- int want;
- if (GDB_MULTI_ARCH)
- internal_error (__FILE__, __LINE__,
- "set_endian_from_file: not for multi-arch");
- if (bfd_big_endian (abfd))
- want = BFD_ENDIAN_BIG;
- else
- want = BFD_ENDIAN_LITTLE;
- if (TARGET_BYTE_ORDER_AUTO)
- target_byte_order = want;
- else if (TARGET_BYTE_ORDER != want)
- warning ("%s endian file does not match %s endian target.",
- want == BFD_ENDIAN_BIG ? "big" : "little",
- TARGET_BYTE_ORDER == BFD_ENDIAN_BIG ? "big" : "little");
-}
-
-
/* Functions to manipulate the architecture of the target */
enum set_arch { set_arch_auto, set_arch_manual };
const char *set_architecture_string;
-/* Old way of changing the current architecture. */
-
-extern const struct bfd_arch_info bfd_default_arch_struct;
-const struct bfd_arch_info *target_architecture = &bfd_default_arch_struct;
-int (*target_architecture_hook) (const struct bfd_arch_info *ap);
-
-static int
-arch_ok (const struct bfd_arch_info *arch)
-{
- if (GDB_MULTI_ARCH)
- internal_error (__FILE__, __LINE__,
- "arch_ok: not multi-arched");
- /* Should be performing the more basic check that the binary is
- compatible with GDB. */
- /* Check with the target that the architecture is valid. */
- return (target_architecture_hook == NULL
- || target_architecture_hook (arch));
-}
-
-static void
-set_arch (const struct bfd_arch_info *arch,
- enum set_arch type)
-{
- if (GDB_MULTI_ARCH)
- internal_error (__FILE__, __LINE__,
- "set_arch: not multi-arched");
- switch (type)
- {
- case set_arch_auto:
- if (!arch_ok (arch))
- warning ("Target may not support %s architecture",
- arch->printable_name);
- target_architecture = arch;
- break;
- case set_arch_manual:
- if (!arch_ok (arch))
- {
- printf_unfiltered ("Target does not support `%s' architecture.\n",
- arch->printable_name);
- }
- else
- {
- target_architecture_auto = 0;
- target_architecture = arch;
- }
- break;
- }
- if (gdbarch_debug)
- gdbarch_dump (current_gdbarch, gdb_stdlog);
-}
-
-/* Set the architecture from arch/machine (deprecated) */
-
-void
-set_architecture_from_arch_mach (enum bfd_architecture arch,
- unsigned long mach)
-{
- const struct bfd_arch_info *wanted = bfd_lookup_arch (arch, mach);
- if (GDB_MULTI_ARCH)
- internal_error (__FILE__, __LINE__,
- "set_architecture_from_arch_mach: not multi-arched");
- if (wanted != NULL)
- set_arch (wanted, set_arch_manual);
- else
- internal_error (__FILE__, __LINE__,
- "gdbarch: hardwired architecture/machine not recognized");
-}
-
-/* Set the architecture from a BFD (deprecated) */
-
-static void
-set_architecture_from_file (bfd *abfd)
-{
- const struct bfd_arch_info *wanted = bfd_get_arch_info (abfd);
- if (GDB_MULTI_ARCH)
- internal_error (__FILE__, __LINE__,
- "set_architecture_from_file: not multi-arched");
- if (target_architecture_auto)
- {
- set_arch (wanted, set_arch_auto);
- }
- else if (wanted != target_architecture)
- {
- warning ("%s architecture file may be incompatible with %s target.",
- wanted->printable_name,
- target_architecture->printable_name);
- }
-}
-
-
/* Called if the user enters ``show architecture'' without an
argument. */
{
target_architecture_auto = 1;
}
- else if (GDB_MULTI_ARCH)
+ else
{
struct gdbarch_info info;
gdbarch_info_init (&info);
printf_unfiltered ("Architecture `%s' not recognized.\n",
set_architecture_string);
}
- else
- {
- const struct bfd_arch_info *arch
- = bfd_scan_arch (set_architecture_string);
- if (arch == NULL)
- internal_error (__FILE__, __LINE__,
- "set_architecture: bfd_scan_arch failed");
- set_arch (arch, set_arch_manual);
- }
show_architecture (NULL, from_tty);
}
void
set_gdbarch_from_file (bfd *abfd)
{
- if (GDB_MULTI_ARCH)
- {
- struct gdbarch_info info;
- gdbarch_info_init (&info);
- info.abfd = abfd;
- if (! gdbarch_update_p (info))
- error ("Architecture of file not recognized.\n");
- }
- else
- {
- set_architecture_from_file (abfd);
- set_endian_from_file (abfd);
- }
+ struct gdbarch_info info;
+ gdbarch_info_init (&info);
+ info.abfd = abfd;
+ if (! gdbarch_update_p (info))
+ error ("Architecture of file not recognized.\n");
}
/* Initialize the current architecture. Update the ``set
info.byte_order = BFD_ENDIAN_BIG;
}
- if (GDB_MULTI_ARCH)
- {
- if (! gdbarch_update_p (info))
- {
- internal_error (__FILE__, __LINE__,
- "initialize_current_architecture: Selection of initial architecture failed");
- }
- }
- else
- {
- /* If the multi-arch logic comes up with a byte-order (from BFD)
- use it for the non-multi-arch case. */
- if (info.byte_order != BFD_ENDIAN_UNKNOWN)
- target_byte_order = info.byte_order;
- initialize_non_multiarch ();
- }
+ if (! gdbarch_update_p (info))
+ internal_error (__FILE__, __LINE__,
+ "initialize_current_architecture: Selection of initial architecture failed");
/* Create the ``set architecture'' command appending ``auto'' to the
list of architectures. */
{
memset (info, 0, sizeof (struct gdbarch_info));
info->byte_order = BFD_ENDIAN_UNKNOWN;
+ info->osabi = GDB_OSABI_UNINITIALIZED;
}
/* */
-extern initialize_file_ftype _initialize_gdbarch_utils;
+extern initialize_file_ftype _initialize_gdbarch_utils; /* -Wmissing-prototypes */
void
_initialize_gdbarch_utils (void)