gdb: rename things related to step over chains

[deliverable/binutils-gdb.git] / gdb / gdbarch.sh

#!/bin/sh -u

# Architecture commands for GDB, the GNU debugger.
#
# Copyright (C) 1998-2020 Free Software Foundation, Inc.
#
# This file is part of GDB.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

# Make certain that the script is not running in an internationalized
# environment.
LANG=C ; export LANG
LC_ALL=C ; export LC_ALL

# Format of the input table
read="class returntype function formal actual staticdefault predefault postdefault invalid_p print garbage_at_eol"

do_read ()
{
    comment=""
    class=""
    # On some SH's, 'read' trims leading and trailing whitespace by
    # default (e.g., bash), while on others (e.g., dash), it doesn't.
    # Set IFS to empty to disable the trimming everywhere.
    # shellcheck disable=SC2162
    while IFS='' read line
    do
	if test "${line}" = ""
	then
	    continue
	elif test "${line}" = "#" -a "${comment}" = ""
	then
	    continue
	elif expr "${line}" : "#" > /dev/null
	then
	    comment="${comment}
${line}"
	else

	    # The semantics of IFS varies between different SH's.  Some
	    # treat ``;;' as three fields while some treat it as just two.
	    # Work around this by eliminating ``;;'' ....
	    line="$(echo "${line}" | sed -e 's/;;/; ;/g' -e 's/;;/; ;/g')"

	    OFS="${IFS}" ; IFS="[;]"
	    eval read "${read}" <<EOF
${line}
EOF
	    IFS="${OFS}"

	    if test -n "${garbage_at_eol:-}"
	    then
		echo "Garbage at end-of-line in ${line}" 1>&2
		kill $$
		exit 1
	    fi

	    # .... and then going back through each field and strip out those
	    # that ended up with just that space character.
	    for r in ${read}
	    do
		if eval test "\"\${${r}}\" = ' '"
		then
		    eval "${r}="
		fi
	    done

	    case "${class}" in
		m ) staticdefault="${predefault:-}" ;;
		M ) staticdefault="0" ;;
		* ) test "${staticdefault}" || staticdefault=0 ;;
	    esac

	    case "${class}" in
	    F | V | M )
		case "${invalid_p:-}" in
		"" )
		    if test -n "${predefault}"
		    then
			#invalid_p="gdbarch->${function} == ${predefault}"
			predicate="gdbarch->${function:-} != ${predefault}"
		    elif class_is_variable_p
		    then
			predicate="gdbarch->${function} != 0"
		    elif class_is_function_p
		    then
			predicate="gdbarch->${function} != NULL"
		    fi
		    ;;
		* )
		    echo "Predicate function ${function} with invalid_p." 1>&2
		    kill $$
		    exit 1
		    ;;
		esac
	    esac

	    #NOT YET: See gdbarch.log for basic verification of
	    # database

	    break
	fi
    done
    if [ -n "${class}" ]
    then
	true
    else
	false
    fi
}


fallback_default_p ()
{
    { [ -n "${postdefault:-}" ] && [ "x${invalid_p}" != "x0" ]; } \
	|| { [ -n "${predefault}" ] && [ "x${invalid_p}" = "x0" ]; }
}

class_is_variable_p ()
{
    case "${class}" in
	*v* | *V* ) true ;;
	* ) false ;;
    esac
}

class_is_function_p ()
{
    case "${class}" in
	*f* | *F* | *m* | *M* ) true ;;
	* ) false ;;
    esac
}

class_is_multiarch_p ()
{
    case "${class}" in
	*m* | *M* ) true ;;
	* ) false ;;
    esac
}

class_is_predicate_p ()
{
    case "${class}" in
	*F* | *V* | *M* ) true ;;
	* ) false ;;
    esac
}

class_is_info_p ()
{
    case "${class}" in
	*i* ) true ;;
	* ) false ;;
    esac
}


# dump out/verify the doco
for field in ${read}
do
  case ${field} in

    class ) : ;;

	# # -> line disable
	# f -> function
	#   hiding a function
	# F -> function + predicate
	#   hiding a function + predicate to test function validity
	# v -> variable
	#   hiding a variable
	# V -> variable + predicate
	#   hiding a variable + predicate to test variables validity
	# i -> set from info
	#   hiding something from the ``struct info'' object
	# m -> multi-arch function
	#   hiding a multi-arch function (parameterised with the architecture)
	# M -> multi-arch function + predicate
	#   hiding a multi-arch function + predicate to test function validity

    returntype ) : ;;

	# For functions, the return type; for variables, the data type

    function ) : ;;

	# For functions, the member function name; for variables, the
	# variable name.  Member function names are always prefixed with
	# ``gdbarch_'' for name-space purity.

    formal ) : ;;

	# The formal argument list.  It is assumed that the formal
	# argument list includes the actual name of each list element.
	# A function with no arguments shall have ``void'' as the
	# formal argument list.

    actual ) : ;;

	# The list of actual arguments.  The arguments specified shall
	# match the FORMAL list given above.  Functions with out
	# arguments leave this blank.

    staticdefault ) : ;;

	# To help with the GDB startup a static gdbarch object is
	# created.  STATICDEFAULT is the value to insert into that
	# static gdbarch object.  Since this a static object only
	# simple expressions can be used.

	# If STATICDEFAULT is empty, zero is used.

    predefault ) : ;;

	# An initial value to assign to MEMBER of the freshly
	# malloc()ed gdbarch object.  After initialization, the
	# freshly malloc()ed object is passed to the target
	# architecture code for further updates.

	# If PREDEFAULT is empty, zero is used.

	# A non-empty PREDEFAULT, an empty POSTDEFAULT and a zero
	# INVALID_P are specified, PREDEFAULT will be used as the
	# default for the non- multi-arch target.

	# A zero PREDEFAULT function will force the fallback to call
	# internal_error().

	# Variable declarations can refer to ``gdbarch'' which will
	# contain the current architecture.  Care should be taken.

    postdefault ) : ;;

	# A value to assign to MEMBER of the new gdbarch object should
	# the target architecture code fail to change the PREDEFAULT
	# value.

	# If POSTDEFAULT is empty, no post update is performed.

	# If both INVALID_P and POSTDEFAULT are non-empty then
	# INVALID_P will be used to determine if MEMBER should be
	# changed to POSTDEFAULT.

	# If a non-empty POSTDEFAULT and a zero INVALID_P are
	# specified, POSTDEFAULT will be used as the default for the
	# non- multi-arch target (regardless of the value of
	# PREDEFAULT).

	# You cannot specify both a zero INVALID_P and a POSTDEFAULT.

	# Variable declarations can refer to ``gdbarch'' which
	# will contain the current architecture.  Care should be
	# taken.

    invalid_p ) : ;;

	# A predicate equation that validates MEMBER.  Non-zero is
	# returned if the code creating the new architecture failed to
	# initialize MEMBER or the initialized the member is invalid.
	# If POSTDEFAULT is non-empty then MEMBER will be updated to
	# that value.  If POSTDEFAULT is empty then internal_error()
	# is called.

	# If INVALID_P is empty, a check that MEMBER is no longer
	# equal to PREDEFAULT is used.

	# The expression ``0'' disables the INVALID_P check making
	# PREDEFAULT a legitimate value.

	# See also PREDEFAULT and POSTDEFAULT.

    print ) : ;;

	# An optional expression that convers MEMBER to a value
	# suitable for formatting using %s.

	# If PRINT is empty, core_addr_to_string_nz (for CORE_ADDR)
	# or plongest (anything else) is used.

    garbage_at_eol ) : ;;

	# Catches stray fields.

    *)
	echo "Bad field ${field}"
	exit 1;;
  esac
done


function_list ()
{
  # See below (DOCO) for description of each field
  cat <<EOF
i;const struct bfd_arch_info *;bfd_arch_info;;;&bfd_default_arch_struct;;;;gdbarch_bfd_arch_info (gdbarch)->printable_name
#
i;enum bfd_endian;byte_order;;;BFD_ENDIAN_BIG
i;enum bfd_endian;byte_order_for_code;;;BFD_ENDIAN_BIG
#
i;enum gdb_osabi;osabi;;;GDB_OSABI_UNKNOWN
#
i;const struct target_desc *;target_desc;;;;;;;host_address_to_string (gdbarch->target_desc)

# Number of bits in a short or unsigned short for the target machine.
v;int;short_bit;;;8 * sizeof (short);2*TARGET_CHAR_BIT;;0
# Number of bits in an int or unsigned int for the target machine.
v;int;int_bit;;;8 * sizeof (int);4*TARGET_CHAR_BIT;;0
# Number of bits in a long or unsigned long for the target machine.
v;int;long_bit;;;8 * sizeof (long);4*TARGET_CHAR_BIT;;0
# Number of bits in a long long or unsigned long long for the target
# machine.
v;int;long_long_bit;;;8 * sizeof (LONGEST);2*gdbarch->long_bit;;0

# The ABI default bit-size and format for "bfloat16", "half", "float", "double", and
# "long double".  These bit/format pairs should eventually be combined
# into a single object.  For the moment, just initialize them as a pair.
# Each format describes both the big and little endian layouts (if
# useful).

v;int;bfloat16_bit;;;16;2*TARGET_CHAR_BIT;;0
v;const struct floatformat **;bfloat16_format;;;;;floatformats_bfloat16;;pformat (gdbarch->bfloat16_format)
v;int;half_bit;;;16;2*TARGET_CHAR_BIT;;0
v;const struct floatformat **;half_format;;;;;floatformats_ieee_half;;pformat (gdbarch->half_format)
v;int;float_bit;;;8 * sizeof (float);4*TARGET_CHAR_BIT;;0
v;const struct floatformat **;float_format;;;;;floatformats_ieee_single;;pformat (gdbarch->float_format)
v;int;double_bit;;;8 * sizeof (double);8*TARGET_CHAR_BIT;;0
v;const struct floatformat **;double_format;;;;;floatformats_ieee_double;;pformat (gdbarch->double_format)
v;int;long_double_bit;;;8 * sizeof (long double);8*TARGET_CHAR_BIT;;0
v;const struct floatformat **;long_double_format;;;;;floatformats_ieee_double;;pformat (gdbarch->long_double_format)

# The ABI default bit-size for "wchar_t".  wchar_t is a built-in type
# starting with C++11.
v;int;wchar_bit;;;8 * sizeof (wchar_t);4*TARGET_CHAR_BIT;;0
# One if \`wchar_t' is signed, zero if unsigned.
v;int;wchar_signed;;;1;-1;1

# Returns the floating-point format to be used for values of length LENGTH.
# NAME, if non-NULL, is the type name, which may be used to distinguish
# different target formats of the same length.
m;const struct floatformat **;floatformat_for_type;const char *name, int length;name, length;0;default_floatformat_for_type;;0

# For most targets, a pointer on the target and its representation as an
# address in GDB have the same size and "look the same".  For such a
# target, you need only set gdbarch_ptr_bit and gdbarch_addr_bit
# / addr_bit will be set from it.
#
# If gdbarch_ptr_bit and gdbarch_addr_bit are different, you'll probably
# also need to set gdbarch_dwarf2_addr_size, gdbarch_pointer_to_address and
# gdbarch_address_to_pointer as well.
#
# ptr_bit is the size of a pointer on the target
v;int;ptr_bit;;;8 * sizeof (void*);gdbarch->int_bit;;0
# addr_bit is the size of a target address as represented in gdb
v;int;addr_bit;;;8 * sizeof (void*);0;gdbarch_ptr_bit (gdbarch);
#
# dwarf2_addr_size is the target address size as used in the Dwarf debug
# info.  For .debug_frame FDEs, this is supposed to be the target address
# size from the associated CU header, and which is equivalent to the
# DWARF2_ADDR_SIZE as defined by the target specific GCC back-end.
# Unfortunately there is no good way to determine this value.  Therefore
# dwarf2_addr_size simply defaults to the target pointer size.
#
# dwarf2_addr_size is not used for .eh_frame FDEs, which are generally
# defined using the target's pointer size so far.
#
# Note that dwarf2_addr_size only needs to be redefined by a target if the
# GCC back-end defines a DWARF2_ADDR_SIZE other than the target pointer size,
# and if Dwarf versions < 4 need to be supported.
v;int;dwarf2_addr_size;;;sizeof (void*);0;gdbarch_ptr_bit (gdbarch) / TARGET_CHAR_BIT;
#
# One if \`char' acts like \`signed char', zero if \`unsigned char'.
v;int;char_signed;;;1;-1;1
#
F;CORE_ADDR;read_pc;readable_regcache *regcache;regcache
F;void;write_pc;struct regcache *regcache, CORE_ADDR val;regcache, val
# Function for getting target's idea of a frame pointer.  FIXME: GDB's
# whole scheme for dealing with "frames" and "frame pointers" needs a
# serious shakedown.
m;void;virtual_frame_pointer;CORE_ADDR pc, int *frame_regnum, LONGEST *frame_offset;pc, frame_regnum, frame_offset;0;legacy_virtual_frame_pointer;;0
#
M;enum register_status;pseudo_register_read;readable_regcache *regcache, int cookednum, gdb_byte *buf;regcache, cookednum, buf
# Read a register into a new struct value.  If the register is wholly
# or partly unavailable, this should call mark_value_bytes_unavailable
# as appropriate.  If this is defined, then pseudo_register_read will
# never be called.
M;struct value *;pseudo_register_read_value;readable_regcache *regcache, int cookednum;regcache, cookednum
M;void;pseudo_register_write;struct regcache *regcache, int cookednum, const gdb_byte *buf;regcache, cookednum, buf
#
v;int;num_regs;;;0;-1
# This macro gives the number of pseudo-registers that live in the
# register namespace but do not get fetched or stored on the target.
# These pseudo-registers may be aliases for other registers,
# combinations of other registers, or they may be computed by GDB.
v;int;num_pseudo_regs;;;0;0;;0

# Assemble agent expression bytecode to collect pseudo-register REG.
# Return -1 if something goes wrong, 0 otherwise.
M;int;ax_pseudo_register_collect;struct agent_expr *ax, int reg;ax, reg

# Assemble agent expression bytecode to push the value of pseudo-register
# REG on the interpreter stack.
# Return -1 if something goes wrong, 0 otherwise.
M;int;ax_pseudo_register_push_stack;struct agent_expr *ax, int reg;ax, reg

# Some architectures can display additional information for specific
# signals.
# UIOUT is the output stream where the handler will place information.
M;void;report_signal_info;struct ui_out *uiout, enum gdb_signal siggnal;uiout, siggnal

# GDB's standard (or well known) register numbers.  These can map onto
# a real register or a pseudo (computed) register or not be defined at
# all (-1).
# gdbarch_sp_regnum will hopefully be replaced by UNWIND_SP.
v;int;sp_regnum;;;-1;-1;;0
v;int;pc_regnum;;;-1;-1;;0
v;int;ps_regnum;;;-1;-1;;0
v;int;fp0_regnum;;;0;-1;;0
# Convert stab register number (from \`r\' declaration) to a gdb REGNUM.
m;int;stab_reg_to_regnum;int stab_regnr;stab_regnr;;no_op_reg_to_regnum;;0
# Provide a default mapping from a ecoff register number to a gdb REGNUM.
m;int;ecoff_reg_to_regnum;int ecoff_regnr;ecoff_regnr;;no_op_reg_to_regnum;;0
# Convert from an sdb register number to an internal gdb register number.
m;int;sdb_reg_to_regnum;int sdb_regnr;sdb_regnr;;no_op_reg_to_regnum;;0
# Provide a default mapping from a DWARF2 register number to a gdb REGNUM.
# Return -1 for bad REGNUM.  Note: Several targets get this wrong.
m;int;dwarf2_reg_to_regnum;int dwarf2_regnr;dwarf2_regnr;;no_op_reg_to_regnum;;0
m;const char *;register_name;int regnr;regnr;;0

# Return the type of a register specified by the architecture.  Only
# the register cache should call this function directly; others should
# use "register_type".
M;struct type *;register_type;int reg_nr;reg_nr

# Generate a dummy frame_id for THIS_FRAME assuming that the frame is
# a dummy frame.  A dummy frame is created before an inferior call,
# the frame_id returned here must match the frame_id that was built
# for the inferior call.  Usually this means the returned frame_id's
# stack address should match the address returned by
# gdbarch_push_dummy_call, and the returned frame_id's code address
# should match the address at which the breakpoint was set in the dummy
# frame.
m;struct frame_id;dummy_id;struct frame_info *this_frame;this_frame;;default_dummy_id;;0
# Implement DUMMY_ID and PUSH_DUMMY_CALL, then delete
# deprecated_fp_regnum.
v;int;deprecated_fp_regnum;;;-1;-1;;0

M;CORE_ADDR;push_dummy_call;struct value *function, struct regcache *regcache, CORE_ADDR bp_addr, int nargs, struct value **args, CORE_ADDR sp, function_call_return_method return_method, CORE_ADDR struct_addr;function, regcache, bp_addr, nargs, args, sp, return_method, struct_addr
v;int;call_dummy_location;;;;AT_ENTRY_POINT;;0
M;CORE_ADDR;push_dummy_code;CORE_ADDR sp, CORE_ADDR funaddr, struct value **args, int nargs, struct type *value_type, CORE_ADDR *real_pc, CORE_ADDR *bp_addr, struct regcache *regcache;sp, funaddr, args, nargs, value_type, real_pc, bp_addr, regcache

# Return true if the code of FRAME is writable.
m;int;code_of_frame_writable;struct frame_info *frame;frame;;default_code_of_frame_writable;;0

m;void;print_registers_info;struct ui_file *file, struct frame_info *frame, int regnum, int all;file, frame, regnum, all;;default_print_registers_info;;0
m;void;print_float_info;struct ui_file *file, struct frame_info *frame, const char *args;file, frame, args;;default_print_float_info;;0
M;void;print_vector_info;struct ui_file *file, struct frame_info *frame, const char *args;file, frame, args
# MAP a GDB RAW register number onto a simulator register number.  See
# also include/...-sim.h.
m;int;register_sim_regno;int reg_nr;reg_nr;;legacy_register_sim_regno;;0
m;int;cannot_fetch_register;int regnum;regnum;;cannot_register_not;;0
m;int;cannot_store_register;int regnum;regnum;;cannot_register_not;;0

# Determine the address where a longjmp will land and save this address
# in PC.  Return nonzero on success.
#
# FRAME corresponds to the longjmp frame.
F;int;get_longjmp_target;struct frame_info *frame, CORE_ADDR *pc;frame, pc

#
v;int;believe_pcc_promotion;;;;;;;
#
m;int;convert_register_p;int regnum, struct type *type;regnum, type;0;generic_convert_register_p;;0
f;int;register_to_value;struct frame_info *frame, int regnum, struct type *type, gdb_byte *buf, int *optimizedp, int *unavailablep;frame, regnum, type, buf, optimizedp, unavailablep;0
f;void;value_to_register;struct frame_info *frame, int regnum, struct type *type, const gdb_byte *buf;frame, regnum, type, buf;0
# Construct a value representing the contents of register REGNUM in
# frame FRAME_ID, interpreted as type TYPE.  The routine needs to
# allocate and return a struct value with all value attributes
# (but not the value contents) filled in.
m;struct value *;value_from_register;struct type *type, int regnum, struct frame_id frame_id;type, regnum, frame_id;;default_value_from_register;;0
#
m;CORE_ADDR;pointer_to_address;struct type *type, const gdb_byte *buf;type, buf;;unsigned_pointer_to_address;;0
m;void;address_to_pointer;struct type *type, gdb_byte *buf, CORE_ADDR addr;type, buf, addr;;unsigned_address_to_pointer;;0
M;CORE_ADDR;integer_to_address;struct type *type, const gdb_byte *buf;type, buf

# Return the return-value convention that will be used by FUNCTION
# to return a value of type VALTYPE.  FUNCTION may be NULL in which
# case the return convention is computed based only on VALTYPE.
#
# If READBUF is not NULL, extract the return value and save it in this buffer.
#
# If WRITEBUF is not NULL, it contains a return value which will be
# stored into the appropriate register.  This can be used when we want
# to force the value returned by a function (see the "return" command
# for instance).
M;enum return_value_convention;return_value;struct value *function, struct type *valtype, struct regcache *regcache, gdb_byte *readbuf, const gdb_byte *writebuf;function, valtype, regcache, readbuf, writebuf

# Return true if the return value of function is stored in the first hidden
# parameter.  In theory, this feature should be language-dependent, specified
# by language and its ABI, such as C++.  Unfortunately, compiler may
# implement it to a target-dependent feature.  So that we need such hook here
# to be aware of this in GDB.
m;int;return_in_first_hidden_param_p;struct type *type;type;;default_return_in_first_hidden_param_p;;0

m;CORE_ADDR;skip_prologue;CORE_ADDR ip;ip;0;0
M;CORE_ADDR;skip_main_prologue;CORE_ADDR ip;ip
# On some platforms, a single function may provide multiple entry points,
# e.g. one that is used for function-pointer calls and a different one
# that is used for direct function calls.
# In order to ensure that breakpoints set on the function will trigger
# no matter via which entry point the function is entered, a platform
# may provide the skip_entrypoint callback.  It is called with IP set
# to the main entry point of a function (as determined by the symbol table),
# and should return the address of the innermost entry point, where the
# actual breakpoint needs to be set.  Note that skip_entrypoint is used
# by GDB common code even when debugging optimized code, where skip_prologue
# is not used.
M;CORE_ADDR;skip_entrypoint;CORE_ADDR ip;ip

f;int;inner_than;CORE_ADDR lhs, CORE_ADDR rhs;lhs, rhs;0;0
m;const gdb_byte *;breakpoint_from_pc;CORE_ADDR *pcptr, int *lenptr;pcptr, lenptr;0;default_breakpoint_from_pc;;0

# Return the breakpoint kind for this target based on *PCPTR.
m;int;breakpoint_kind_from_pc;CORE_ADDR *pcptr;pcptr;;0;

# Return the software breakpoint from KIND.  KIND can have target
# specific meaning like the Z0 kind parameter.
# SIZE is set to the software breakpoint's length in memory.
m;const gdb_byte *;sw_breakpoint_from_kind;int kind, int *size;kind, size;;NULL;;0

# Return the breakpoint kind for this target based on the current
# processor state (e.g. the current instruction mode on ARM) and the
# *PCPTR.  In default, it is gdbarch->breakpoint_kind_from_pc.
m;int;breakpoint_kind_from_current_state;struct regcache *regcache, CORE_ADDR *pcptr;regcache, pcptr;0;default_breakpoint_kind_from_current_state;;0

M;CORE_ADDR;adjust_breakpoint_address;CORE_ADDR bpaddr;bpaddr
m;int;memory_insert_breakpoint;struct bp_target_info *bp_tgt;bp_tgt;0;default_memory_insert_breakpoint;;0
m;int;memory_remove_breakpoint;struct bp_target_info *bp_tgt;bp_tgt;0;default_memory_remove_breakpoint;;0
v;CORE_ADDR;decr_pc_after_break;;;0;;;0

# A function can be addressed by either it's "pointer" (possibly a
# descriptor address) or "entry point" (first executable instruction).
# The method "convert_from_func_ptr_addr" converting the former to the
# latter.  gdbarch_deprecated_function_start_offset is being used to implement
# a simplified subset of that functionality - the function's address
# corresponds to the "function pointer" and the function's start
# corresponds to the "function entry point" - and hence is redundant.

v;CORE_ADDR;deprecated_function_start_offset;;;0;;;0

# Return the remote protocol register number associated with this
# register.  Normally the identity mapping.
m;int;remote_register_number;int regno;regno;;default_remote_register_number;;0

# Fetch the target specific address used to represent a load module.
F;CORE_ADDR;fetch_tls_load_module_address;struct objfile *objfile;objfile

# Return the thread-local address at OFFSET in the thread-local
# storage for the thread PTID and the shared library or executable
# file given by LM_ADDR.  If that block of thread-local storage hasn't
# been allocated yet, this function may throw an error.  LM_ADDR may
# be zero for statically linked multithreaded inferiors.

M;CORE_ADDR;get_thread_local_address;ptid_t ptid, CORE_ADDR lm_addr, CORE_ADDR offset;ptid, lm_addr, offset
#
v;CORE_ADDR;frame_args_skip;;;0;;;0
m;CORE_ADDR;unwind_pc;struct frame_info *next_frame;next_frame;;default_unwind_pc;;0
m;CORE_ADDR;unwind_sp;struct frame_info *next_frame;next_frame;;default_unwind_sp;;0
# DEPRECATED_FRAME_LOCALS_ADDRESS as been replaced by the per-frame
# frame-base.  Enable frame-base before frame-unwind.
F;int;frame_num_args;struct frame_info *frame;frame
#
M;CORE_ADDR;frame_align;CORE_ADDR address;address
m;int;stabs_argument_has_addr;struct type *type;type;;default_stabs_argument_has_addr;;0
v;int;frame_red_zone_size
#
m;CORE_ADDR;convert_from_func_ptr_addr;CORE_ADDR addr, struct target_ops *targ;addr, targ;;convert_from_func_ptr_addr_identity;;0
# On some machines there are bits in addresses which are not really
# part of the address, but are used by the kernel, the hardware, etc.
# for special purposes.  gdbarch_addr_bits_remove takes out any such bits so
# we get a "real" address such as one would find in a symbol table.
# This is used only for addresses of instructions, and even then I'm
# not sure it's used in all contexts.  It exists to deal with there
# being a few stray bits in the PC which would mislead us, not as some
# sort of generic thing to handle alignment or segmentation (it's
# possible it should be in TARGET_READ_PC instead).
m;CORE_ADDR;addr_bits_remove;CORE_ADDR addr;addr;;core_addr_identity;;0

# On some machines, not all bits of an address word are significant.
# For example, on AArch64, the top bits of an address known as the "tag"
# are ignored by the kernel, the hardware, etc. and can be regarded as
# additional data associated with the address.
v;int;significant_addr_bit;;;;;;0

# FIXME/cagney/2001-01-18: This should be split in two.  A target method that
# indicates if the target needs software single step.  An ISA method to
# implement it.
#
# FIXME/cagney/2001-01-18: The logic is backwards.  It should be asking if the
# target can single step.  If not, then implement single step using breakpoints.
#
# Return a vector of addresses on which the software single step
# breakpoints should be inserted.  NULL means software single step is
# not used.
# Multiple breakpoints may be inserted for some instructions such as
# conditional branch.  However, each implementation must always evaluate
# the condition and only put the breakpoint at the branch destination if
# the condition is true, so that we ensure forward progress when stepping
# past a conditional branch to self.
F;std::vector<CORE_ADDR>;software_single_step;struct regcache *regcache;regcache

# Return non-zero if the processor is executing a delay slot and a
# further single-step is needed before the instruction finishes.
M;int;single_step_through_delay;struct frame_info *frame;frame
# FIXME: cagney/2003-08-28: Need to find a better way of selecting the
# disassembler.  Perhaps objdump can handle it?
f;int;print_insn;bfd_vma vma, struct disassemble_info *info;vma, info;;default_print_insn;;0
f;CORE_ADDR;skip_trampoline_code;struct frame_info *frame, CORE_ADDR pc;frame, pc;;generic_skip_trampoline_code;;0


# If in_solib_dynsym_resolve_code() returns true, and SKIP_SOLIB_RESOLVER
# evaluates non-zero, this is the address where the debugger will place
# a step-resume breakpoint to get us past the dynamic linker.
m;CORE_ADDR;skip_solib_resolver;CORE_ADDR pc;pc;;generic_skip_solib_resolver;;0
# Some systems also have trampoline code for returning from shared libs.
m;int;in_solib_return_trampoline;CORE_ADDR pc, const char *name;pc, name;;generic_in_solib_return_trampoline;;0

# Return true if PC lies inside an indirect branch thunk.
m;bool;in_indirect_branch_thunk;CORE_ADDR pc;pc;;default_in_indirect_branch_thunk;;0

# A target might have problems with watchpoints as soon as the stack
# frame of the current function has been destroyed.  This mostly happens
# as the first action in a function's epilogue.  stack_frame_destroyed_p()
# is defined to return a non-zero value if either the given addr is one
# instruction after the stack destroying instruction up to the trailing
# return instruction or if we can figure out that the stack frame has
# already been invalidated regardless of the value of addr.  Targets
# which don't suffer from that problem could just let this functionality
# untouched.
m;int;stack_frame_destroyed_p;CORE_ADDR addr;addr;0;generic_stack_frame_destroyed_p;;0
# Process an ELF symbol in the minimal symbol table in a backend-specific
# way.  Normally this hook is supposed to do nothing, however if required,
# then this hook can be used to apply tranformations to symbols that are
# considered special in some way.  For example the MIPS backend uses it
# to interpret \`st_other' information to mark compressed code symbols so
# that they can be treated in the appropriate manner in the processing of
# the main symbol table and DWARF-2 records.
F;void;elf_make_msymbol_special;asymbol *sym, struct minimal_symbol *msym;sym, msym
f;void;coff_make_msymbol_special;int val, struct minimal_symbol *msym;val, msym;;default_coff_make_msymbol_special;;0
# Process a symbol in the main symbol table in a backend-specific way.
# Normally this hook is supposed to do nothing, however if required,
# then this hook can be used to apply tranformations to symbols that
# are considered special in some way.  This is currently used by the
# MIPS backend to make sure compressed code symbols have the ISA bit
# set.  This in turn is needed for symbol values seen in GDB to match
# the values used at the runtime by the program itself, for function
# and label references.
f;void;make_symbol_special;struct symbol *sym, struct objfile *objfile;sym, objfile;;default_make_symbol_special;;0
# Adjust the address retrieved from a DWARF-2 record other than a line
# entry in a backend-specific way.  Normally this hook is supposed to
# return the address passed unchanged, however if that is incorrect for
# any reason, then this hook can be used to fix the address up in the
# required manner.  This is currently used by the MIPS backend to make
# sure addresses in FDE, range records, etc. referring to compressed
# code have the ISA bit set, matching line information and the symbol
# table.
f;CORE_ADDR;adjust_dwarf2_addr;CORE_ADDR pc;pc;;default_adjust_dwarf2_addr;;0
# Adjust the address updated by a line entry in a backend-specific way.
# Normally this hook is supposed to return the address passed unchanged,
# however in the case of inconsistencies in these records, this hook can
# be used to fix them up in the required manner.  This is currently used
# by the MIPS backend to make sure all line addresses in compressed code
# are presented with the ISA bit set, which is not always the case.  This
# in turn ensures breakpoint addresses are correctly matched against the
# stop PC.
f;CORE_ADDR;adjust_dwarf2_line;CORE_ADDR addr, int rel;addr, rel;;default_adjust_dwarf2_line;;0
v;int;cannot_step_breakpoint;;;0;0;;0
# See comment in target.h about continuable, steppable and
# non-steppable watchpoints.
v;int;have_nonsteppable_watchpoint;;;0;0;;0
F;type_instance_flags;address_class_type_flags;int byte_size, int dwarf2_addr_class;byte_size, dwarf2_addr_class
M;const char *;address_class_type_flags_to_name;type_instance_flags type_flags;type_flags
# Execute vendor-specific DWARF Call Frame Instruction.  OP is the instruction.
# FS are passed from the generic execute_cfa_program function.
m;bool;execute_dwarf_cfa_vendor_op;gdb_byte op, struct dwarf2_frame_state *fs;op, fs;;default_execute_dwarf_cfa_vendor_op;;0

# Return the appropriate type_flags for the supplied address class.
# This function should return true if the address class was recognized and
# type_flags was set, false otherwise.
M;bool;address_class_name_to_type_flags;const char *name, type_instance_flags *type_flags_ptr;name, type_flags_ptr
# Is a register in a group
m;int;register_reggroup_p;int regnum, struct reggroup *reggroup;regnum, reggroup;;default_register_reggroup_p;;0
# Fetch the pointer to the ith function argument.
F;CORE_ADDR;fetch_pointer_argument;struct frame_info *frame, int argi, struct type *type;frame, argi, type

# Iterate over all supported register notes in a core file.  For each
# supported register note section, the iterator must call CB and pass
# CB_DATA unchanged.  If REGCACHE is not NULL, the iterator can limit
# the supported register note sections based on the current register
# values.  Otherwise it should enumerate all supported register note
# sections.
M;void;iterate_over_regset_sections;iterate_over_regset_sections_cb *cb, void *cb_data, const struct regcache *regcache;cb, cb_data, regcache

# Create core file notes
M;gdb::unique_xmalloc_ptr<char>;make_corefile_notes;bfd *obfd, int *note_size;obfd, note_size

# Find core file memory regions
M;int;find_memory_regions;find_memory_region_ftype func, void *data;func, data

# Read offset OFFSET of TARGET_OBJECT_LIBRARIES formatted shared libraries list from
# core file into buffer READBUF with length LEN.  Return the number of bytes read
# (zero indicates failure).
# failed, otherwise, return the red length of READBUF.
M;ULONGEST;core_xfer_shared_libraries;gdb_byte *readbuf, ULONGEST offset, ULONGEST len;readbuf, offset, len

# Read offset OFFSET of TARGET_OBJECT_LIBRARIES_AIX formatted shared
# libraries list from core file into buffer READBUF with length LEN.
# Return the number of bytes read (zero indicates failure).
M;ULONGEST;core_xfer_shared_libraries_aix;gdb_byte *readbuf, ULONGEST offset, ULONGEST len;readbuf, offset, len

# How the core target converts a PTID from a core file to a string.
M;std::string;core_pid_to_str;ptid_t ptid;ptid

# How the core target extracts the name of a thread from a core file.
M;const char *;core_thread_name;struct thread_info *thr;thr

# Read offset OFFSET of TARGET_OBJECT_SIGNAL_INFO signal information
# from core file into buffer READBUF with length LEN.  Return the number
# of bytes read (zero indicates EOF, a negative value indicates failure).
M;LONGEST;core_xfer_siginfo;gdb_byte *readbuf, ULONGEST offset, ULONGEST len; readbuf, offset, len

# BFD target to use when generating a core file.
V;const char *;gcore_bfd_target;;;0;0;;;pstring (gdbarch->gcore_bfd_target)

# If the elements of C++ vtables are in-place function descriptors rather
# than normal function pointers (which may point to code or a descriptor),
# set this to one.
v;int;vtable_function_descriptors;;;0;0;;0

# Set if the least significant bit of the delta is used instead of the least
# significant bit of the pfn for pointers to virtual member functions.
v;int;vbit_in_delta;;;0;0;;0

# Advance PC to next instruction in order to skip a permanent breakpoint.
f;void;skip_permanent_breakpoint;struct regcache *regcache;regcache;default_skip_permanent_breakpoint;default_skip_permanent_breakpoint;;0

# The maximum length of an instruction on this architecture in bytes.
V;ULONGEST;max_insn_length;;;0;0

# Copy the instruction at FROM to TO, and make any adjustments
# necessary to single-step it at that address.
#
# REGS holds the state the thread's registers will have before
# executing the copied instruction; the PC in REGS will refer to FROM,
# not the copy at TO.  The caller should update it to point at TO later.
#
# Return a pointer to data of the architecture's choice to be passed
# to gdbarch_displaced_step_fixup.
#
# For a general explanation of displaced stepping and how GDB uses it,
# see the comments in infrun.c.
#
# The TO area is only guaranteed to have space for
# gdbarch_max_insn_length (arch) bytes, so this function must not
# write more bytes than that to that area.
#
# If you do not provide this function, GDB assumes that the
# architecture does not support displaced stepping.
#
# If the instruction cannot execute out of line, return NULL.  The
# core falls back to stepping past the instruction in-line instead in
# that case.
M;displaced_step_closure_up;displaced_step_copy_insn;CORE_ADDR from, CORE_ADDR to, struct regcache *regs;from, to, regs

# Return true if GDB should use hardware single-stepping to execute a displaced
# step instruction.  If false, GDB will simply restart execution at the
# displaced instruction location, and it is up to the target to ensure GDB will
# receive control again (e.g. by placing a software breakpoint instruction into
# the displaced instruction buffer).
#
# The default implementation returns false on all targets that provide a
# gdbarch_software_single_step routine, and true otherwise.
m;bool;displaced_step_hw_singlestep;void;;;default_displaced_step_hw_singlestep;;0

# Fix up the state resulting from successfully single-stepping a
# displaced instruction, to give the result we would have gotten from
# stepping the instruction in its original location.
#
# REGS is the register state resulting from single-stepping the
# displaced instruction.
#
# CLOSURE is the result from the matching call to
# gdbarch_displaced_step_copy_insn.
#
# If you provide gdbarch_displaced_step_copy_insn.but not this
# function, then GDB assumes that no fixup is needed after
# single-stepping the instruction.
#
# For a general explanation of displaced stepping and how GDB uses it,
# see the comments in infrun.c.
M;void;displaced_step_fixup;struct displaced_step_closure *closure, CORE_ADDR from, CORE_ADDR to, struct regcache *regs;closure, from, to, regs;;NULL

# Return the address of an appropriate place to put displaced
# instructions while we step over them.  There need only be one such
# place, since we're only stepping one thread over a breakpoint at a
# time.
#
# For a general explanation of displaced stepping and how GDB uses it,
# see the comments in infrun.c.
m;CORE_ADDR;displaced_step_location;void;;;NULL;;(! gdbarch->displaced_step_location) != (! gdbarch->displaced_step_copy_insn)

# Relocate an instruction to execute at a different address.  OLDLOC
# is the address in the inferior memory where the instruction to
# relocate is currently at.  On input, TO points to the destination
# where we want the instruction to be copied (and possibly adjusted)
# to.  On output, it points to one past the end of the resulting
# instruction(s).  The effect of executing the instruction at TO shall
# be the same as if executing it at FROM.  For example, call
# instructions that implicitly push the return address on the stack
# should be adjusted to return to the instruction after OLDLOC;
# relative branches, and other PC-relative instructions need the
# offset adjusted; etc.
M;void;relocate_instruction;CORE_ADDR *to, CORE_ADDR from;to, from;;NULL

# Refresh overlay mapped state for section OSECT.
F;void;overlay_update;struct obj_section *osect;osect

M;const struct target_desc *;core_read_description;struct target_ops *target, bfd *abfd;target, abfd

# Set if the address in N_SO or N_FUN stabs may be zero.
v;int;sofun_address_maybe_missing;;;0;0;;0

# Parse the instruction at ADDR storing in the record execution log
# the registers REGCACHE and memory ranges that will be affected when
# the instruction executes, along with their current values.
# Return -1 if something goes wrong, 0 otherwise.
M;int;process_record;struct regcache *regcache, CORE_ADDR addr;regcache, addr

# Save process state after a signal.
# Return -1 if something goes wrong, 0 otherwise.
M;int;process_record_signal;struct regcache *regcache, enum gdb_signal signal;regcache, signal

# Signal translation: translate inferior's signal (target's) number
# into GDB's representation.  The implementation of this method must
# be host independent.  IOW, don't rely on symbols of the NAT_FILE
# header (the nm-*.h files), the host <signal.h> header, or similar
# headers.  This is mainly used when cross-debugging core files ---
# "Live" targets hide the translation behind the target interface
# (target_wait, target_resume, etc.).
M;enum gdb_signal;gdb_signal_from_target;int signo;signo

# Signal translation: translate the GDB's internal signal number into
# the inferior's signal (target's) representation.  The implementation
# of this method must be host independent.  IOW, don't rely on symbols
# of the NAT_FILE header (the nm-*.h files), the host <signal.h>
# header, or similar headers.
# Return the target signal number if found, or -1 if the GDB internal
# signal number is invalid.
M;int;gdb_signal_to_target;enum gdb_signal signal;signal

# Extra signal info inspection.
#
# Return a type suitable to inspect extra signal information.
M;struct type *;get_siginfo_type;void;

# Record architecture-specific information from the symbol table.
M;void;record_special_symbol;struct objfile *objfile, asymbol *sym;objfile, sym

# Function for the 'catch syscall' feature.

# Get architecture-specific system calls information from registers.
M;LONGEST;get_syscall_number;thread_info *thread;thread

# The filename of the XML syscall for this architecture.
v;const char *;xml_syscall_file;;;0;0;;0;pstring (gdbarch->xml_syscall_file)

# Information about system calls from this architecture
v;struct syscalls_info *;syscalls_info;;;0;0;;0;host_address_to_string (gdbarch->syscalls_info)

# SystemTap related fields and functions.

# A NULL-terminated array of prefixes used to mark an integer constant
# on the architecture's assembly.
# For example, on x86 integer constants are written as:
#
#  \$10 ;; integer constant 10
#
# in this case, this prefix would be the character \`\$\'.
v;const char *const *;stap_integer_prefixes;;;0;0;;0;pstring_list (gdbarch->stap_integer_prefixes)

# A NULL-terminated array of suffixes used to mark an integer constant
# on the architecture's assembly.
v;const char *const *;stap_integer_suffixes;;;0;0;;0;pstring_list (gdbarch->stap_integer_suffixes)

# A NULL-terminated array of prefixes used to mark a register name on
# the architecture's assembly.
# For example, on x86 the register name is written as:
#
#  \%eax ;; register eax
#
# in this case, this prefix would be the character \`\%\'.
v;const char *const *;stap_register_prefixes;;;0;0;;0;pstring_list (gdbarch->stap_register_prefixes)

# A NULL-terminated array of suffixes used to mark a register name on
# the architecture's assembly.
v;const char *const *;stap_register_suffixes;;;0;0;;0;pstring_list (gdbarch->stap_register_suffixes)

# A NULL-terminated array of prefixes used to mark a register
# indirection on the architecture's assembly.
# For example, on x86 the register indirection is written as:
#
#  \(\%eax\) ;; indirecting eax
#
# in this case, this prefix would be the charater \`\(\'.
#
# Please note that we use the indirection prefix also for register
# displacement, e.g., \`4\(\%eax\)\' on x86.
v;const char *const *;stap_register_indirection_prefixes;;;0;0;;0;pstring_list (gdbarch->stap_register_indirection_prefixes)

# A NULL-terminated array of suffixes used to mark a register
# indirection on the architecture's assembly.
# For example, on x86 the register indirection is written as:
#
#  \(\%eax\) ;; indirecting eax
#
# in this case, this prefix would be the charater \`\)\'.
#
# Please note that we use the indirection suffix also for register
# displacement, e.g., \`4\(\%eax\)\' on x86.
v;const char *const *;stap_register_indirection_suffixes;;;0;0;;0;pstring_list (gdbarch->stap_register_indirection_suffixes)

# Prefix(es) used to name a register using GDB's nomenclature.
#
# For example, on PPC a register is represented by a number in the assembly
# language (e.g., \`10\' is the 10th general-purpose register).  However,
# inside GDB this same register has an \`r\' appended to its name, so the 10th
# register would be represented as \`r10\' internally.
v;const char *;stap_gdb_register_prefix;;;0;0;;0;pstring (gdbarch->stap_gdb_register_prefix)

# Suffix used to name a register using GDB's nomenclature.
v;const char *;stap_gdb_register_suffix;;;0;0;;0;pstring (gdbarch->stap_gdb_register_suffix)

# Check if S is a single operand.
#
# Single operands can be:
#  \- Literal integers, e.g. \`\$10\' on x86
#  \- Register access, e.g. \`\%eax\' on x86
#  \- Register indirection, e.g. \`\(\%eax\)\' on x86
#  \- Register displacement, e.g. \`4\(\%eax\)\' on x86
#
# This function should check for these patterns on the string
# and return 1 if some were found, or zero otherwise.  Please try to match
# as much info as you can from the string, i.e., if you have to match
# something like \`\(\%\', do not match just the \`\(\'.
M;int;stap_is_single_operand;const char *s;s

# Function used to handle a "special case" in the parser.
#
# A "special case" is considered to be an unknown token, i.e., a token
# that the parser does not know how to parse.  A good example of special
# case would be ARM's register displacement syntax:
#
#  [R0, #4]  ;; displacing R0 by 4
#
# Since the parser assumes that a register displacement is of the form:
#
#  <number> <indirection_prefix> <register_name> <indirection_suffix>
#
# it means that it will not be able to recognize and parse this odd syntax.
# Therefore, we should add a special case function that will handle this token.
#
# This function should generate the proper expression form of the expression
# using GDB\'s internal expression mechanism (e.g., \`write_exp_elt_opcode\'
# and so on).  It should also return 1 if the parsing was successful, or zero
# if the token was not recognized as a special token (in this case, returning
# zero means that the special parser is deferring the parsing to the generic
# parser), and should advance the buffer pointer (p->arg).
M;int;stap_parse_special_token;struct stap_parse_info *p;p

# Perform arch-dependent adjustments to a register name.
#
# In very specific situations, it may be necessary for the register
# name present in a SystemTap probe's argument to be handled in a
# special way.  For example, on i386, GCC may over-optimize the
# register allocation and use smaller registers than necessary.  In
# such cases, the client that is reading and evaluating the SystemTap
# probe (ourselves) will need to actually fetch values from the wider
# version of the register in question.
#
# To illustrate the example, consider the following probe argument
# (i386):
#
#    4@%ax
#
# This argument says that its value can be found at the %ax register,
# which is a 16-bit register.  However, the argument's prefix says
# that its type is "uint32_t", which is 32-bit in size.  Therefore, in
# this case, GDB should actually fetch the probe's value from register
# %eax, not %ax.  In this scenario, this function would actually
# replace the register name from %ax to %eax.
#
# The rationale for this can be found at PR breakpoints/24541.
M;std::string;stap_adjust_register;struct stap_parse_info *p, const std::string \&regname, int regnum;p, regname, regnum

# DTrace related functions.

# The expression to compute the NARTGth+1 argument to a DTrace USDT probe.
# NARG must be >= 0.
M;void;dtrace_parse_probe_argument;struct expr_builder *builder, int narg;builder, narg

# True if the given ADDR does not contain the instruction sequence
# corresponding to a disabled DTrace is-enabled probe.
M;int;dtrace_probe_is_enabled;CORE_ADDR addr;addr

# Enable a DTrace is-enabled probe at ADDR.
M;void;dtrace_enable_probe;CORE_ADDR addr;addr

# Disable a DTrace is-enabled probe at ADDR.
M;void;dtrace_disable_probe;CORE_ADDR addr;addr

# True if the list of shared libraries is one and only for all
# processes, as opposed to a list of shared libraries per inferior.
# This usually means that all processes, although may or may not share
# an address space, will see the same set of symbols at the same
# addresses.
v;int;has_global_solist;;;0;0;;0

# On some targets, even though each inferior has its own private
# address space, the debug interface takes care of making breakpoints
# visible to all address spaces automatically.  For such cases,
# this property should be set to true.
v;int;has_global_breakpoints;;;0;0;;0

# True if inferiors share an address space (e.g., uClinux).
m;int;has_shared_address_space;void;;;default_has_shared_address_space;;0

# True if a fast tracepoint can be set at an address.
m;int;fast_tracepoint_valid_at;CORE_ADDR addr, std::string *msg;addr, msg;;default_fast_tracepoint_valid_at;;0

# Guess register state based on tracepoint location.  Used for tracepoints
# where no registers have been collected, but there's only one location,
# allowing us to guess the PC value, and perhaps some other registers.
# On entry, regcache has all registers marked as unavailable.
m;void;guess_tracepoint_registers;struct regcache *regcache, CORE_ADDR addr;regcache, addr;;default_guess_tracepoint_registers;;0

# Return the "auto" target charset.
f;const char *;auto_charset;void;;default_auto_charset;default_auto_charset;;0
# Return the "auto" target wide charset.
f;const char *;auto_wide_charset;void;;default_auto_wide_charset;default_auto_wide_charset;;0

# If non-empty, this is a file extension that will be opened in place
# of the file extension reported by the shared library list.
#
# This is most useful for toolchains that use a post-linker tool,
# where the names of the files run on the target differ in extension
# compared to the names of the files GDB should load for debug info.
v;const char *;solib_symbols_extension;;;;;;;pstring (gdbarch->solib_symbols_extension)

# If true, the target OS has DOS-based file system semantics.  That
# is, absolute paths include a drive name, and the backslash is
# considered a directory separator.
v;int;has_dos_based_file_system;;;0;0;;0

# Generate bytecodes to collect the return address in a frame.
# Since the bytecodes run on the target, possibly with GDB not even
# connected, the full unwinding machinery is not available, and
# typically this function will issue bytecodes for one or more likely
# places that the return address may be found.
m;void;gen_return_address;struct agent_expr *ax, struct axs_value *value, CORE_ADDR scope;ax, value, scope;;default_gen_return_address;;0

# Implement the "info proc" command.
M;void;info_proc;const char *args, enum info_proc_what what;args, what

# Implement the "info proc" command for core files.  Noe that there
# are two "info_proc"-like methods on gdbarch -- one for core files,
# one for live targets.
M;void;core_info_proc;const char *args, enum info_proc_what what;args, what

# Iterate over all objfiles in the order that makes the most sense
# for the architecture to make global symbol searches.
#
# CB is a callback function where OBJFILE is the objfile to be searched,
# and CB_DATA a pointer to user-defined data (the same data that is passed
# when calling this gdbarch method).  The iteration stops if this function
# returns nonzero.
#
# CB_DATA is a pointer to some user-defined data to be passed to
# the callback.
#
# If not NULL, CURRENT_OBJFILE corresponds to the objfile being
# inspected when the symbol search was requested.
m;void;iterate_over_objfiles_in_search_order;iterate_over_objfiles_in_search_order_cb_ftype *cb, void *cb_data, struct objfile *current_objfile;cb, cb_data, current_objfile;0;default_iterate_over_objfiles_in_search_order;;0

# Ravenscar arch-dependent ops.
v;struct ravenscar_arch_ops *;ravenscar_ops;;;NULL;NULL;;0;host_address_to_string (gdbarch->ravenscar_ops)

# Return non-zero if the instruction at ADDR is a call; zero otherwise.
m;int;insn_is_call;CORE_ADDR addr;addr;;default_insn_is_call;;0

# Return non-zero if the instruction at ADDR is a return; zero otherwise.
m;int;insn_is_ret;CORE_ADDR addr;addr;;default_insn_is_ret;;0

# Return non-zero if the instruction at ADDR is a jump; zero otherwise.
m;int;insn_is_jump;CORE_ADDR addr;addr;;default_insn_is_jump;;0

# Return true if there's a program/permanent breakpoint planted in
# memory at ADDRESS, return false otherwise.
m;bool;program_breakpoint_here_p;CORE_ADDR address;address;;default_program_breakpoint_here_p;;0

# Read one auxv entry from *READPTR, not reading locations >= ENDPTR.
# Return 0 if *READPTR is already at the end of the buffer.
# Return -1 if there is insufficient buffer for a whole entry.
# Return 1 if an entry was read into *TYPEP and *VALP.
M;int;auxv_parse;gdb_byte **readptr, gdb_byte *endptr, CORE_ADDR *typep, CORE_ADDR *valp;readptr, endptr, typep, valp

# Print the description of a single auxv entry described by TYPE and VAL
# to FILE.
m;void;print_auxv_entry;struct ui_file *file, CORE_ADDR type, CORE_ADDR val;file, type, val;;default_print_auxv_entry;;0

# Find the address range of the current inferior's vsyscall/vDSO, and
# write it to *RANGE.  If the vsyscall's length can't be determined, a
# range with zero length is returned.  Returns true if the vsyscall is
# found, false otherwise.
m;int;vsyscall_range;struct mem_range *range;range;;default_vsyscall_range;;0

# Allocate SIZE bytes of PROT protected page aligned memory in inferior.
# PROT has GDB_MMAP_PROT_* bitmask format.
# Throw an error if it is not possible.  Returned address is always valid.
f;CORE_ADDR;infcall_mmap;CORE_ADDR size, unsigned prot;size, prot;;default_infcall_mmap;;0

# Deallocate SIZE bytes of memory at ADDR in inferior from gdbarch_infcall_mmap.
# Print a warning if it is not possible.
f;void;infcall_munmap;CORE_ADDR addr, CORE_ADDR size;addr, size;;default_infcall_munmap;;0

# Return string (caller has to use xfree for it) with options for GCC
# to produce code for this target, typically "-m64", "-m32" or "-m31".
# These options are put before CU's DW_AT_producer compilation options so that
# they can override it.
m;std::string;gcc_target_options;void;;;default_gcc_target_options;;0

# Return a regular expression that matches names used by this
# architecture in GNU configury triplets.  The result is statically
# allocated and must not be freed.  The default implementation simply
# returns the BFD architecture name, which is correct in nearly every
# case.
m;const char *;gnu_triplet_regexp;void;;;default_gnu_triplet_regexp;;0

# Return the size in 8-bit bytes of an addressable memory unit on this
# architecture.  This corresponds to the number of 8-bit bytes associated to
# each address in memory.
m;int;addressable_memory_unit_size;void;;;default_addressable_memory_unit_size;;0

# Functions for allowing a target to modify its disassembler options.
v;const char *;disassembler_options_implicit;;;0;0;;0;pstring (gdbarch->disassembler_options_implicit)
v;char **;disassembler_options;;;0;0;;0;pstring_ptr (gdbarch->disassembler_options)
v;const disasm_options_and_args_t *;valid_disassembler_options;;;0;0;;0;host_address_to_string (gdbarch->valid_disassembler_options)

# Type alignment override method.  Return the architecture specific
# alignment required for TYPE.  If there is no special handling
# required for TYPE then return the value 0, GDB will then apply the
# default rules as laid out in gdbtypes.c:type_align.
m;ULONGEST;type_align;struct type *type;type;;default_type_align;;0

# Return a string containing any flags for the given PC in the given FRAME.
f;std::string;get_pc_address_flags;frame_info *frame, CORE_ADDR pc;frame, pc;;default_get_pc_address_flags;;0

# Read core file mappings
m;void;read_core_file_mappings;struct bfd *cbfd, gdb::function_view<void (ULONGEST count)> pre_loop_cb, gdb::function_view<void (int num, ULONGEST start, ULONGEST end, ULONGEST file_ofs, const char *filename)> loop_cb;cbfd, pre_loop_cb, loop_cb;;default_read_core_file_mappings;;0

EOF
}

#
# The .log file
#
exec > gdbarch.log
function_list | while do_read
do
    cat <<EOF
${class} ${returntype:-} ${function} (${formal:-})
EOF
    for r in ${read}
    do
	eval echo "\"    ${r}=\${${r}}\""
    done
    if class_is_predicate_p && fallback_default_p
    then
	echo "Error: predicate function ${function} can not have a non- multi-arch default" 1>&2
	kill $$
	exit 1
    fi
    if [ "x${invalid_p}" = "x0" ] && [ -n "${postdefault}" ]
    then
	echo "Error: postdefault is useless when invalid_p=0" 1>&2
	kill $$
	exit 1
    fi
    if class_is_multiarch_p
    then
	if class_is_predicate_p ; then :
	elif test "x${predefault}" = "x"
	then
	    echo "Error: pure multi-arch function ${function} must have a predefault" 1>&2
	    kill $$
	    exit 1
	fi
    fi
    echo ""
done

exec 1>&2


copyright ()
{
cat <<EOF
/* *INDENT-OFF* */ /* THIS FILE IS GENERATED -*- buffer-read-only: t -*- */
/* vi:set ro: */

/* Dynamic architecture support for GDB, the GNU debugger.

   Copyright (C) 1998-2020 Free Software Foundation, Inc.

   This file is part of GDB.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */

/* This file was created with the aid of \`\`gdbarch.sh''.  */

EOF
}

#
# The .h file
#

exec > new-gdbarch.h
copyright
cat <<EOF
#ifndef GDBARCH_H
#define GDBARCH_H

#include <vector>
#include "frame.h"
#include "dis-asm.h"
#include "gdb_obstack.h"
#include "infrun.h"
#include "osabi.h"

struct floatformat;
struct ui_file;
struct value;
struct objfile;
struct obj_section;
struct minimal_symbol;
struct regcache;
struct reggroup;
struct regset;
struct disassemble_info;
struct target_ops;
struct obstack;
struct bp_target_info;
struct target_desc;
struct symbol;
struct syscall;
struct agent_expr;
struct axs_value;
struct stap_parse_info;
struct expr_builder;
struct ravenscar_arch_ops;
struct mem_range;
struct syscalls_info;
struct thread_info;
struct ui_out;

#include "regcache.h"

/* The architecture associated with the inferior through the
   connection to the target.

   The architecture vector provides some information that is really a
   property of the inferior, accessed through a particular target:
   ptrace operations; the layout of certain RSP packets; the solib_ops
   vector; etc.  To differentiate architecture accesses to
   per-inferior/target properties from
   per-thread/per-frame/per-objfile properties, accesses to
   per-inferior/target properties should be made through this
   gdbarch.  */

/* This is a convenience wrapper for 'current_inferior ()->gdbarch'.  */
extern struct gdbarch *target_gdbarch (void);

/* Callback type for the 'iterate_over_objfiles_in_search_order'
   gdbarch  method.  */

typedef int (iterate_over_objfiles_in_search_order_cb_ftype)
  (struct objfile *objfile, void *cb_data);

/* Callback type for regset section iterators.  The callback usually
   invokes the REGSET's supply or collect method, to which it must
   pass a buffer - for collects this buffer will need to be created using
   COLLECT_SIZE, for supply the existing buffer being read from should
   be at least SUPPLY_SIZE.  SECT_NAME is a BFD section name, and HUMAN_NAME
   is used for diagnostic messages.  CB_DATA should have been passed
   unchanged through the iterator.  */

typedef void (iterate_over_regset_sections_cb)
  (const char *sect_name, int supply_size, int collect_size,
   const struct regset *regset, const char *human_name, void *cb_data);

/* For a function call, does the function return a value using a
   normal value return or a structure return - passing a hidden
   argument pointing to storage.  For the latter, there are two
   cases: language-mandated structure return and target ABI
   structure return.  */

enum function_call_return_method
{
  /* Standard value return.  */
  return_method_normal = 0,

  /* Language ABI structure return.  This is handled
     by passing the return location as the first parameter to
     the function, even preceding "this".  */
  return_method_hidden_param,

  /* Target ABI struct return.  This is target-specific; for instance,
     on ia64 the first argument is passed in out0 but the hidden
     structure return pointer would normally be passed in r8.  */
  return_method_struct,
};

EOF

# function typedef's
printf "\n"
printf "\n"
printf "/* The following are pre-initialized by GDBARCH.  */\n"
function_list | while do_read
do
    if class_is_info_p
    then
	printf "\n"
	printf "extern %s gdbarch_%s (struct gdbarch *gdbarch);\n" "$returntype" "$function"
	printf "/* set_gdbarch_%s() - not applicable - pre-initialized.  */\n" "$function"
    fi
done

# function typedef's
printf "\n"
printf "\n"
printf "/* The following are initialized by the target dependent code.  */\n"
function_list | while do_read
do
    if [ -n "${comment}" ]
    then
	echo "${comment}" | sed \
	    -e '2 s,#,/*,' \
	    -e '3,$ s,#,  ,' \
	    -e '$ s,$, */,'
    fi

    if class_is_predicate_p
    then
	printf "\n"
	printf "extern bool gdbarch_%s_p (struct gdbarch *gdbarch);\n" "$function"
    fi
    if class_is_variable_p
    then
	printf "\n"
	printf "extern %s gdbarch_%s (struct gdbarch *gdbarch);\n" "$returntype" "$function"
	printf "extern void set_gdbarch_%s (struct gdbarch *gdbarch, %s %s);\n" "$function" "$returntype" "$function"
    fi
    if class_is_function_p
    then
	printf "\n"
	if [ "x${formal}" = "xvoid" ] && class_is_multiarch_p
	then
	    printf "typedef %s (gdbarch_%s_ftype) (struct gdbarch *gdbarch);\n" "$returntype" "$function"
	elif class_is_multiarch_p
	then
	    printf "typedef %s (gdbarch_%s_ftype) (struct gdbarch *gdbarch, %s);\n" "$returntype" "$function" "$formal"
	else
	    printf "typedef %s (gdbarch_%s_ftype) (%s);\n" "$returntype" "$function" "$formal"
	fi
	if [ "x${formal}" = "xvoid" ]
	then
	  printf "extern %s gdbarch_%s (struct gdbarch *gdbarch);\n" "$returntype" "$function"
	else
	  printf "extern %s gdbarch_%s (struct gdbarch *gdbarch, %s);\n" "$returntype" "$function" "$formal"
	fi
	printf "extern void set_gdbarch_%s (struct gdbarch *gdbarch, gdbarch_%s_ftype *%s);\n" "$function" "$function" "$function"
    fi
done

# close it off
cat <<EOF

extern struct gdbarch_tdep *gdbarch_tdep (struct gdbarch *gdbarch);


/* Mechanism for co-ordinating the selection of a specific
   architecture.

   GDB targets (*-tdep.c) can register an interest in a specific
   architecture.  Other GDB components can register a need to maintain
   per-architecture data.

   The mechanisms below ensures that there is only a loose connection
   between the set-architecture command and the various GDB
   components.  Each component can independently register their need
   to maintain architecture specific data with gdbarch.

   Pragmatics:

   Previously, a single TARGET_ARCHITECTURE_HOOK was provided.  It
   didn't scale.

   The more traditional mega-struct containing architecture specific
   data for all the various GDB components was also considered.  Since
   GDB is built from a variable number of (fairly independent)
   components it was determined that the global aproach was not
   applicable.  */


/* Register a new architectural family with GDB.

   Register support for the specified ARCHITECTURE with GDB.  When
   gdbarch determines that the specified architecture has been
   selected, the corresponding INIT function is called.

   --

   The INIT function takes two parameters: INFO which contains the
   information available to gdbarch about the (possibly new)
   architecture; ARCHES which is a list of the previously created
   \`\`struct gdbarch'' for this architecture.

   The INFO parameter is, as far as possible, be pre-initialized with
   information obtained from INFO.ABFD or the global defaults.

   The ARCHES parameter is a linked list (sorted most recently used)
   of all the previously created architures for this architecture
   family.  The (possibly NULL) ARCHES->gdbarch can used to access
   values from the previously selected architecture for this
   architecture family.

   The INIT function shall return any of: NULL - indicating that it
   doesn't recognize the selected architecture; an existing \`\`struct
   gdbarch'' from the ARCHES list - indicating that the new
   architecture is just a synonym for an earlier architecture (see
   gdbarch_list_lookup_by_info()); a newly created \`\`struct gdbarch''
   - that describes the selected architecture (see gdbarch_alloc()).

   The DUMP_TDEP function shall print out all target specific values.
   Care should be taken to ensure that the function works in both the
   multi-arch and non- multi-arch cases.  */

struct gdbarch_list
{
  struct gdbarch *gdbarch;
  struct gdbarch_list *next;
};

struct gdbarch_info
{
  /* Use default: NULL (ZERO).  */
  const struct bfd_arch_info *bfd_arch_info;

  /* Use default: BFD_ENDIAN_UNKNOWN (NB: is not ZERO).  */
  enum bfd_endian byte_order;

  enum bfd_endian byte_order_for_code;

  /* Use default: NULL (ZERO).  */
  bfd *abfd;

  /* Use default: NULL (ZERO).  */
  union
    {
      /* Architecture-specific information.  The generic form for targets
	 that have extra requirements.  */
      struct gdbarch_tdep_info *tdep_info;

      /* Architecture-specific target description data.  Numerous targets
	 need only this, so give them an easy way to hold it.  */
      struct tdesc_arch_data *tdesc_data;

      /* SPU file system ID.  This is a single integer, so using the
	 generic form would only complicate code.  Other targets may
	 reuse this member if suitable.  */
      int *id;
    };

  /* Use default: GDB_OSABI_UNINITIALIZED (-1).  */
  enum gdb_osabi osabi;

  /* Use default: NULL (ZERO).  */
  const struct target_desc *target_desc;
};

typedef struct gdbarch *(gdbarch_init_ftype) (struct gdbarch_info info, struct gdbarch_list *arches);
typedef void (gdbarch_dump_tdep_ftype) (struct gdbarch *gdbarch, struct ui_file *file);

/* DEPRECATED - use gdbarch_register() */
extern void register_gdbarch_init (enum bfd_architecture architecture, gdbarch_init_ftype *);

extern void gdbarch_register (enum bfd_architecture architecture,
			      gdbarch_init_ftype *,
			      gdbarch_dump_tdep_ftype *);


/* Return a freshly allocated, NULL terminated, array of the valid
   architecture names.  Since architectures are registered during the
   _initialize phase this function only returns useful information
   once initialization has been completed.  */

extern const char **gdbarch_printable_names (void);


/* Helper function.  Search the list of ARCHES for a GDBARCH that
   matches the information provided by INFO.  */

extern struct gdbarch_list *gdbarch_list_lookup_by_info (struct gdbarch_list *arches, const struct gdbarch_info *info);


/* Helper function.  Create a preliminary \`\`struct gdbarch''.  Perform
   basic initialization using values obtained from the INFO and TDEP
   parameters.  set_gdbarch_*() functions are called to complete the
   initialization of the object.  */

extern struct gdbarch *gdbarch_alloc (const struct gdbarch_info *info, struct gdbarch_tdep *tdep);


/* Helper function.  Free a partially-constructed \`\`struct gdbarch''.
   It is assumed that the caller freeds the \`\`struct
   gdbarch_tdep''.  */

extern void gdbarch_free (struct gdbarch *);

/* Get the obstack owned by ARCH.  */

extern obstack *gdbarch_obstack (gdbarch *arch);

/* Helper function.  Allocate memory from the \`\`struct gdbarch''
   obstack.  The memory is freed when the corresponding architecture
   is also freed.  */

#define GDBARCH_OBSTACK_CALLOC(GDBARCH, NR, TYPE) \
  obstack_calloc<TYPE> (gdbarch_obstack ((GDBARCH)), (NR))

#define GDBARCH_OBSTACK_ZALLOC(GDBARCH, TYPE) \
  obstack_zalloc<TYPE> (gdbarch_obstack ((GDBARCH)))

/* Duplicate STRING, returning an equivalent string that's allocated on the
   obstack associated with GDBARCH.  The string is freed when the corresponding
   architecture is also freed.  */

extern char *gdbarch_obstack_strdup (struct gdbarch *arch, const char *string);

/* Helper function.  Force an update of the current architecture.

   The actual architecture selected is determined by INFO, \`\`(gdb) set
   architecture'' et.al., the existing architecture and BFD's default
   architecture.  INFO should be initialized to zero and then selected
   fields should be updated.

   Returns non-zero if the update succeeds.  */

extern int gdbarch_update_p (struct gdbarch_info info);


/* Helper function.  Find an architecture matching info.

   INFO should be initialized using gdbarch_info_init, relevant fields
   set, and then finished using gdbarch_info_fill.

   Returns the corresponding architecture, or NULL if no matching
   architecture was found.  */

extern struct gdbarch *gdbarch_find_by_info (struct gdbarch_info info);


/* Helper function.  Set the target gdbarch to "gdbarch".  */

extern void set_target_gdbarch (struct gdbarch *gdbarch);


/* Register per-architecture data-pointer.

   Reserve space for a per-architecture data-pointer.  An identifier
   for the reserved data-pointer is returned.  That identifer should
   be saved in a local static variable.

   Memory for the per-architecture data shall be allocated using
   gdbarch_obstack_zalloc.  That memory will be deleted when the
   corresponding architecture object is deleted.

   When a previously created architecture is re-selected, the
   per-architecture data-pointer for that previous architecture is
   restored.  INIT() is not re-called.

   Multiple registrarants for any architecture are allowed (and
   strongly encouraged).  */

struct gdbarch_data;

typedef void *(gdbarch_data_pre_init_ftype) (struct obstack *obstack);
extern struct gdbarch_data *gdbarch_data_register_pre_init (gdbarch_data_pre_init_ftype *init);
typedef void *(gdbarch_data_post_init_ftype) (struct gdbarch *gdbarch);
extern struct gdbarch_data *gdbarch_data_register_post_init (gdbarch_data_post_init_ftype *init);

extern void *gdbarch_data (struct gdbarch *gdbarch, struct gdbarch_data *);


/* Set the dynamic target-system-dependent parameters (architecture,
   byte-order, ...) using information found in the BFD.  */

extern void set_gdbarch_from_file (bfd *);


/* Initialize the current architecture to the "first" one we find on
   our list.  */

extern void initialize_current_architecture (void);

/* gdbarch trace variable */
extern unsigned int gdbarch_debug;

extern void gdbarch_dump (struct gdbarch *gdbarch, struct ui_file *file);

/* Return the number of cooked registers (raw + pseudo) for ARCH.  */

static inline int
gdbarch_num_cooked_regs (gdbarch *arch)
{
  return gdbarch_num_regs (arch) + gdbarch_num_pseudo_regs (arch);
}

#endif
EOF
exec 1>&2
../move-if-change new-gdbarch.h gdbarch.h
rm -f new-gdbarch.h


#
# C file
#

exec > new-gdbarch.c
copyright
cat <<EOF

#include "defs.h"
#include "arch-utils.h"

#include "gdbcmd.h"
#include "inferior.h" 
#include "symcat.h"

#include "floatformat.h"
#include "reggroups.h"
#include "osabi.h"
#include "gdb_obstack.h"
#include "observable.h"
#include "regcache.h"
#include "objfiles.h"
#include "auxv.h"
#include "frame-unwind.h"
#include "dummy-frame.h"

/* Static function declarations */

static void alloc_gdbarch_data (struct gdbarch *);

/* Non-zero if we want to trace architecture code.  */

#ifndef GDBARCH_DEBUG
#define GDBARCH_DEBUG 0
#endif
unsigned int gdbarch_debug = GDBARCH_DEBUG;
static void
show_gdbarch_debug (struct ui_file *file, int from_tty,
		    struct cmd_list_element *c, const char *value)
{
  fprintf_filtered (file, _("Architecture debugging is %s.\\n"), value);
}

static const char *
pformat (const struct floatformat **format)
{
  if (format == NULL)
    return "(null)";
  else
    /* Just print out one of them - this is only for diagnostics.  */
    return format[0]->name;
}

static const char *
pstring (const char *string)
{
  if (string == NULL)
    return "(null)";
  return string;
}

static const char *
pstring_ptr (char **string)
{
  if (string == NULL || *string == NULL)
    return "(null)";
  return *string;
}

/* Helper function to print a list of strings, represented as "const
   char *const *".  The list is printed comma-separated.  */

static const char *
pstring_list (const char *const *list)
{
  static char ret[100];
  const char *const *p;
  size_t offset = 0;

  if (list == NULL)
    return "(null)";

  ret[0] = '\0';
  for (p = list; *p != NULL && offset < sizeof (ret); ++p)
    {
      size_t s = xsnprintf (ret + offset, sizeof (ret) - offset, "%s, ", *p);
      offset += 2 + s;
    }

  if (offset > 0)
    {
      gdb_assert (offset - 2 < sizeof (ret));
      ret[offset - 2] = '\0';
    }

  return ret;
}

EOF

# gdbarch open the gdbarch object
printf "\n"
printf "/* Maintain the struct gdbarch object.  */\n"
printf "\n"
printf "struct gdbarch\n"
printf "{\n"
printf "  /* Has this architecture been fully initialized?  */\n"
printf "  int initialized_p;\n"
printf "\n"
printf "  /* An obstack bound to the lifetime of the architecture.  */\n"
printf "  struct obstack *obstack;\n"
printf "\n"
printf "  /* basic architectural information.  */\n"
function_list | while do_read
do
    if class_is_info_p
    then
	printf "  %s %s;\n" "$returntype" "$function"
    fi
done
printf "\n"
printf "  /* target specific vector.  */\n"
printf "  struct gdbarch_tdep *tdep;\n"
printf "  gdbarch_dump_tdep_ftype *dump_tdep;\n"
printf "\n"
printf "  /* per-architecture data-pointers.  */\n"
printf "  unsigned nr_data;\n"
printf "  void **data;\n"
printf "\n"
cat <<EOF
  /* Multi-arch values.

     When extending this structure you must:

     Add the field below.

     Declare set/get functions and define the corresponding
     macro in gdbarch.h.

     gdbarch_alloc(): If zero/NULL is not a suitable default,
     initialize the new field.

     verify_gdbarch(): Confirm that the target updated the field
     correctly.

     gdbarch_dump(): Add a fprintf_unfiltered call so that the new
     field is dumped out

     get_gdbarch(): Implement the set/get functions (probably using
     the macro's as shortcuts).

     */

EOF
function_list | while do_read
do
    if class_is_variable_p
    then
	printf "  %s %s;\n" "$returntype" "$function"
    elif class_is_function_p
    then
	printf "  gdbarch_%s_ftype *%s;\n" "$function" "$function"
    fi
done
printf "};\n"

# Create a new gdbarch struct
cat <<EOF

/* Create a new \`\`struct gdbarch'' based on information provided by
   \`\`struct gdbarch_info''.  */
EOF
printf "\n"
cat <<EOF
struct gdbarch *
gdbarch_alloc (const struct gdbarch_info *info,
	       struct gdbarch_tdep *tdep)
{
  struct gdbarch *gdbarch;

  /* Create an obstack for allocating all the per-architecture memory,
     then use that to allocate the architecture vector.  */
  struct obstack *obstack = XNEW (struct obstack);
  obstack_init (obstack);
  gdbarch = XOBNEW (obstack, struct gdbarch);
  memset (gdbarch, 0, sizeof (*gdbarch));
  gdbarch->obstack = obstack;

  alloc_gdbarch_data (gdbarch);

  gdbarch->tdep = tdep;
EOF
printf "\n"
function_list | while do_read
do
    if class_is_info_p
    then
	printf "  gdbarch->%s = info->%s;\n" "$function" "$function"
    fi
done
printf "\n"
printf "  /* Force the explicit initialization of these.  */\n"
function_list | while do_read
do
    if class_is_function_p || class_is_variable_p
    then
	if [ -n "${predefault}" ] && [ "x${predefault}" != "x0" ]
	then
	  printf "  gdbarch->%s = %s;\n" "$function" "$predefault"
	fi
    fi
done
cat <<EOF
  /* gdbarch_alloc() */

  return gdbarch;
}
EOF

# Free a gdbarch struct.
printf "\n"
printf "\n"
cat <<EOF

obstack *gdbarch_obstack (gdbarch *arch)
{
  return arch->obstack;
}

/* See gdbarch.h.  */

char *
gdbarch_obstack_strdup (struct gdbarch *arch, const char *string)
{
  return obstack_strdup (arch->obstack, string);
}


/* Free a gdbarch struct.  This should never happen in normal
   operation --- once you've created a gdbarch, you keep it around.
   However, if an architecture's init function encounters an error
   building the structure, it may need to clean up a partially
   constructed gdbarch.  */

void
gdbarch_free (struct gdbarch *arch)
{
  struct obstack *obstack;

  gdb_assert (arch != NULL);
  gdb_assert (!arch->initialized_p);
  obstack = arch->obstack;
  obstack_free (obstack, 0); /* Includes the ARCH.  */
  xfree (obstack);
}
EOF

# verify a new architecture
cat <<EOF


/* Ensure that all values in a GDBARCH are reasonable.  */

static void
verify_gdbarch (struct gdbarch *gdbarch)
{
  string_file log;

  /* fundamental */
  if (gdbarch->byte_order == BFD_ENDIAN_UNKNOWN)
    log.puts ("\n\tbyte-order");
  if (gdbarch->bfd_arch_info == NULL)
    log.puts ("\n\tbfd_arch_info");
  /* Check those that need to be defined for the given multi-arch level.  */
EOF
function_list | while do_read
do
    if class_is_function_p || class_is_variable_p
    then
	if [ "x${invalid_p}" = "x0" ]
	then
	    printf "  /* Skip verify of %s, invalid_p == 0 */\n" "$function"
	elif class_is_predicate_p
	then
	    printf "  /* Skip verify of %s, has predicate.  */\n" "$function"
	# FIXME: See do_read for potential simplification
	elif [ -n "${invalid_p}" ] && [ -n "${postdefault}" ]
	then
	    printf "  if (%s)\n" "$invalid_p"
	    printf "    gdbarch->%s = %s;\n" "$function" "$postdefault"
	elif [ -n "${predefault}" ] && [ -n "${postdefault}" ]
	then
	    printf "  if (gdbarch->%s == %s)\n" "$function" "$predefault"
	    printf "    gdbarch->%s = %s;\n" "$function" "$postdefault"
	elif [ -n "${postdefault}" ]
	then
	    printf "  if (gdbarch->%s == 0)\n" "$function"
	    printf "    gdbarch->%s = %s;\n" "$function" "$postdefault"
	elif [ -n "${invalid_p}" ]
	then
	    printf "  if (%s)\n" "$invalid_p"
	    printf "    log.puts (\"\\\\n\\\\t%s\");\n" "$function"
	elif [ -n "${predefault}" ]
	then
	    printf "  if (gdbarch->%s == %s)\n" "$function" "$predefault"
	    printf "    log.puts (\"\\\\n\\\\t%s\");\n" "$function"
	fi
    fi
done
cat <<EOF
  if (!log.empty ())
    internal_error (__FILE__, __LINE__,
		    _("verify_gdbarch: the following are invalid ...%s"),
		    log.c_str ());
}
EOF

# dump the structure
printf "\n"
printf "\n"
cat <<EOF
/* Print out the details of the current architecture.  */

void
gdbarch_dump (struct gdbarch *gdbarch, struct ui_file *file)
{
  const char *gdb_nm_file = "<not-defined>";

#if defined (GDB_NM_FILE)
  gdb_nm_file = GDB_NM_FILE;
#endif
  fprintf_unfiltered (file,
		      "gdbarch_dump: GDB_NM_FILE = %s\\n",
		      gdb_nm_file);
EOF
function_list | sort '-t;' -k 3 | while do_read
do
    # First the predicate
    if class_is_predicate_p
    then
	printf "  fprintf_unfiltered (file,\n"
	printf "                      \"gdbarch_dump: gdbarch_%s_p() = %%d\\\\n\",\n" "$function"
	printf "                      gdbarch_%s_p (gdbarch));\n" "$function"
    fi
    # Print the corresponding value.
    if class_is_function_p
    then
	printf "  fprintf_unfiltered (file,\n"
	printf "                      \"gdbarch_dump: %s = <%%s>\\\\n\",\n" "$function"
	printf "                      host_address_to_string (gdbarch->%s));\n" "$function"
    else
	# It is a variable
	case "${print}:${returntype}" in
	    :CORE_ADDR )
		fmt="%s"
		print="core_addr_to_string_nz (gdbarch->${function})"
		;;
	    :* )
		fmt="%s"
		print="plongest (gdbarch->${function})"
		;;
	    * )
		fmt="%s"
		;;
	esac
	printf "  fprintf_unfiltered (file,\n"
	printf "                      \"gdbarch_dump: %s = %s\\\\n\",\n" "$function" "$fmt"
	printf "                      %s);\n" "$print"
    fi
done
cat <<EOF
  if (gdbarch->dump_tdep != NULL)
    gdbarch->dump_tdep (gdbarch, file);
}
EOF


# GET/SET
printf "\n"
cat <<EOF
struct gdbarch_tdep *
gdbarch_tdep (struct gdbarch *gdbarch)
{
  if (gdbarch_debug >= 2)
    fprintf_unfiltered (gdb_stdlog, "gdbarch_tdep called\\n");
  return gdbarch->tdep;
}
EOF
printf "\n"
function_list | while do_read
do
    if class_is_predicate_p
    then
	printf "\n"
	printf "bool\n"
	printf "gdbarch_%s_p (struct gdbarch *gdbarch)\n" "$function"
	printf "{\n"
	printf "  gdb_assert (gdbarch != NULL);\n"
	printf "  return %s;\n" "$predicate"
	printf "}\n"
    fi
    if class_is_function_p
    then
	printf "\n"
	printf "%s\n" "$returntype"
	if [ "x${formal}" = "xvoid" ]
	then
	  printf "gdbarch_%s (struct gdbarch *gdbarch)\n" "$function"
	else
	  printf "gdbarch_%s (struct gdbarch *gdbarch, %s)\n" "$function" "$formal"
	fi
	printf "{\n"
	printf "  gdb_assert (gdbarch != NULL);\n"
	printf "  gdb_assert (gdbarch->%s != NULL);\n" "$function"
	if class_is_predicate_p && test -n "${predefault}"
	then
	    # Allow a call to a function with a predicate.
	    printf "  /* Do not check predicate: %s, allow call.  */\n" "$predicate"
	fi
	printf "  if (gdbarch_debug >= 2)\n"
	printf "    fprintf_unfiltered (gdb_stdlog, \"gdbarch_%s called\\\\n\");\n" "$function"
	if [ "x${actual:-}" = "x-" ] || [ "x${actual:-}" = "x" ]
	then
	    if class_is_multiarch_p
	    then
		params="gdbarch"
	    else
		params=""
	    fi
	else
	    if class_is_multiarch_p
	    then
		params="gdbarch, ${actual}"
	    else
		params="${actual}"
	    fi
	fi
       	if [ "x${returntype}" = "xvoid" ]
	then
	  printf "  gdbarch->%s (%s);\n" "$function" "$params"
	else
	  printf "  return gdbarch->%s (%s);\n" "$function" "$params"
	fi
	printf "}\n"
	printf "\n"
	printf "void\n"
	printf "set_gdbarch_%s (struct gdbarch *gdbarch,\n" "$function"
	printf "            %s  gdbarch_%s_ftype %s)\n" "$(echo "$function" | sed -e 's/./ /g')" "$function" "$function"
	printf "{\n"
	printf "  gdbarch->%s = %s;\n" "$function" "$function"
	printf "}\n"
    elif class_is_variable_p
    then
	printf "\n"
	printf "%s\n" "$returntype"
	printf "gdbarch_%s (struct gdbarch *gdbarch)\n" "$function"
	printf "{\n"
	printf "  gdb_assert (gdbarch != NULL);\n"
	if [ "x${invalid_p}" = "x0" ]
	then
	    printf "  /* Skip verify of %s, invalid_p == 0 */\n" "$function"
	elif [ -n "${invalid_p}" ]
	then
	    printf "  /* Check variable is valid.  */\n"
	    printf "  gdb_assert (!(%s));\n" "$invalid_p"
	elif [ -n "${predefault}" ]
	then
	    printf "  /* Check variable changed from pre-default.  */\n"
	    printf "  gdb_assert (gdbarch->%s != %s);\n" "$function" "$predefault"
	fi
	printf "  if (gdbarch_debug >= 2)\n"
	printf "    fprintf_unfiltered (gdb_stdlog, \"gdbarch_%s called\\\\n\");\n" "$function"
	printf "  return gdbarch->%s;\n" "$function"
	printf "}\n"
	printf "\n"
	printf "void\n"
	printf "set_gdbarch_%s (struct gdbarch *gdbarch,\n" "$function"
	printf "            %s  %s %s)\n" "$(echo "$function" | sed -e 's/./ /g')" "$returntype" "$function"
	printf "{\n"
	printf "  gdbarch->%s = %s;\n" "$function" "$function"
	printf "}\n"
    elif class_is_info_p
    then
	printf "\n"
	printf "%s\n" "$returntype"
	printf "gdbarch_%s (struct gdbarch *gdbarch)\n" "$function"
	printf "{\n"
	printf "  gdb_assert (gdbarch != NULL);\n"
	printf "  if (gdbarch_debug >= 2)\n"
	printf "    fprintf_unfiltered (gdb_stdlog, \"gdbarch_%s called\\\\n\");\n" "$function"
	printf "  return gdbarch->%s;\n" "$function"
	printf "}\n"
    fi
done

# All the trailing guff
cat <<EOF


/* Keep a registry of per-architecture data-pointers required by GDB
   modules.  */

struct gdbarch_data
{
  unsigned index;
  int init_p;
  gdbarch_data_pre_init_ftype *pre_init;
  gdbarch_data_post_init_ftype *post_init;
};

struct gdbarch_data_registration
{
  struct gdbarch_data *data;
  struct gdbarch_data_registration *next;
};

struct gdbarch_data_registry
{
  unsigned nr;
  struct gdbarch_data_registration *registrations;
};

struct gdbarch_data_registry gdbarch_data_registry =
{
  0, NULL,
};

static struct gdbarch_data *
gdbarch_data_register (gdbarch_data_pre_init_ftype *pre_init,
		       gdbarch_data_post_init_ftype *post_init)
{
  struct gdbarch_data_registration **curr;

  /* Append the new registration.  */
  for (curr = &gdbarch_data_registry.registrations;
       (*curr) != NULL;
       curr = &(*curr)->next);
  (*curr) = XNEW (struct gdbarch_data_registration);
  (*curr)->next = NULL;
  (*curr)->data = XNEW (struct gdbarch_data);
  (*curr)->data->index = gdbarch_data_registry.nr++;
  (*curr)->data->pre_init = pre_init;
  (*curr)->data->post_init = post_init;
  (*curr)->data->init_p = 1;
  return (*curr)->data;
}

struct gdbarch_data *
gdbarch_data_register_pre_init (gdbarch_data_pre_init_ftype *pre_init)
{
  return gdbarch_data_register (pre_init, NULL);
}

struct gdbarch_data *
gdbarch_data_register_post_init (gdbarch_data_post_init_ftype *post_init)
{
  return gdbarch_data_register (NULL, post_init);
}

/* Create/delete the gdbarch data vector.  */

static void
alloc_gdbarch_data (struct gdbarch *gdbarch)
{
  gdb_assert (gdbarch->data == NULL);
  gdbarch->nr_data = gdbarch_data_registry.nr;
  gdbarch->data = GDBARCH_OBSTACK_CALLOC (gdbarch, gdbarch->nr_data, void *);
}

/* Return the current value of the specified per-architecture
   data-pointer.  */

void *
gdbarch_data (struct gdbarch *gdbarch, struct gdbarch_data *data)
{
  gdb_assert (data->index < gdbarch->nr_data);
  if (gdbarch->data[data->index] == NULL)
    {
      /* The data-pointer isn't initialized, call init() to get a
	 value.  */
      if (data->pre_init != NULL)
	/* Mid architecture creation: pass just the obstack, and not
	   the entire architecture, as that way it isn't possible for
	   pre-init code to refer to undefined architecture
	   fields.  */
	gdbarch->data[data->index] = data->pre_init (gdbarch->obstack);
      else if (gdbarch->initialized_p
	       && data->post_init != NULL)
	/* Post architecture creation: pass the entire architecture
	   (as all fields are valid), but be careful to also detect
	   recursive references.  */
	{
	  gdb_assert (data->init_p);
	  data->init_p = 0;
	  gdbarch->data[data->index] = data->post_init (gdbarch);
	  data->init_p = 1;
	}
      else
	internal_error (__FILE__, __LINE__,
			_("gdbarch post-init data field can only be used "
			  "after gdbarch is fully initialised"));
      gdb_assert (gdbarch->data[data->index] != NULL);
    }
  return gdbarch->data[data->index];
}


/* Keep a registry of the architectures known by GDB.  */

struct gdbarch_registration
{
  enum bfd_architecture bfd_architecture;
  gdbarch_init_ftype *init;
  gdbarch_dump_tdep_ftype *dump_tdep;
  struct gdbarch_list *arches;
  struct gdbarch_registration *next;
};

static struct gdbarch_registration *gdbarch_registry = NULL;

static void
append_name (const char ***buf, int *nr, const char *name)
{
  *buf = XRESIZEVEC (const char *, *buf, *nr + 1);
  (*buf)[*nr] = name;
  *nr += 1;
}

const char **
gdbarch_printable_names (void)
{
  /* Accumulate a list of names based on the registed list of
     architectures.  */
  int nr_arches = 0;
  const char **arches = NULL;
  struct gdbarch_registration *rego;

  for (rego = gdbarch_registry;
       rego != NULL;
       rego = rego->next)
    {
      const struct bfd_arch_info *ap;
      ap = bfd_lookup_arch (rego->bfd_architecture, 0);
      if (ap == NULL)
	internal_error (__FILE__, __LINE__,
			_("gdbarch_architecture_names: multi-arch unknown"));
      do
	{
	  append_name (&arches, &nr_arches, ap->printable_name);
	  ap = ap->next;
	}
      while (ap != NULL);
    }
  append_name (&arches, &nr_arches, NULL);
  return arches;
}


void
gdbarch_register (enum bfd_architecture bfd_architecture,
		  gdbarch_init_ftype *init,
		  gdbarch_dump_tdep_ftype *dump_tdep)
{
  struct gdbarch_registration **curr;
  const struct bfd_arch_info *bfd_arch_info;

  /* Check that BFD recognizes this architecture */
  bfd_arch_info = bfd_lookup_arch (bfd_architecture, 0);
  if (bfd_arch_info == NULL)
    {
      internal_error (__FILE__, __LINE__,
		      _("gdbarch: Attempt to register "
			"unknown architecture (%d)"),
		      bfd_architecture);
    }
  /* Check that we haven't seen this architecture before.  */
  for (curr = &gdbarch_registry;
       (*curr) != NULL;
       curr = &(*curr)->next)
    {
      if (bfd_architecture == (*curr)->bfd_architecture)
	internal_error (__FILE__, __LINE__,
			_("gdbarch: Duplicate registration "
			  "of architecture (%s)"),
			bfd_arch_info->printable_name);
    }
  /* log it */
  if (gdbarch_debug)
    fprintf_unfiltered (gdb_stdlog, "register_gdbarch_init (%s, %s)\n",
			bfd_arch_info->printable_name,
			host_address_to_string (init));
  /* Append it */
  (*curr) = XNEW (struct gdbarch_registration);
  (*curr)->bfd_architecture = bfd_architecture;
  (*curr)->init = init;
  (*curr)->dump_tdep = dump_tdep;
  (*curr)->arches = NULL;
  (*curr)->next = NULL;
}

void
register_gdbarch_init (enum bfd_architecture bfd_architecture,
		       gdbarch_init_ftype *init)
{
  gdbarch_register (bfd_architecture, init, NULL);
}


/* Look for an architecture using gdbarch_info.  */

struct gdbarch_list *
gdbarch_list_lookup_by_info (struct gdbarch_list *arches,
			     const struct gdbarch_info *info)
{
  for (; arches != NULL; arches = arches->next)
    {
      if (info->bfd_arch_info != arches->gdbarch->bfd_arch_info)
	continue;
      if (info->byte_order != arches->gdbarch->byte_order)
	continue;
      if (info->osabi != arches->gdbarch->osabi)
	continue;
      if (info->target_desc != arches->gdbarch->target_desc)
	continue;
      return arches;
    }
  return NULL;
}


/* Find an architecture that matches the specified INFO.  Create a new
   architecture if needed.  Return that new architecture.  */

struct gdbarch *
gdbarch_find_by_info (struct gdbarch_info info)
{
  struct gdbarch *new_gdbarch;
  struct gdbarch_registration *rego;

  /* Fill in missing parts of the INFO struct using a number of
     sources: "set ..."; INFOabfd supplied; and the global
     defaults.  */
  gdbarch_info_fill (&info);

  /* Must have found some sort of architecture.  */
  gdb_assert (info.bfd_arch_info != NULL);

  if (gdbarch_debug)
    {
      fprintf_unfiltered (gdb_stdlog,
			  "gdbarch_find_by_info: info.bfd_arch_info %s\n",
			  (info.bfd_arch_info != NULL
			   ? info.bfd_arch_info->printable_name
			   : "(null)"));
      fprintf_unfiltered (gdb_stdlog,
			  "gdbarch_find_by_info: info.byte_order %d (%s)\n",
			  info.byte_order,
			  (info.byte_order == BFD_ENDIAN_BIG ? "big"
			   : info.byte_order == BFD_ENDIAN_LITTLE ? "little"
			   : "default"));
      fprintf_unfiltered (gdb_stdlog,
			  "gdbarch_find_by_info: info.osabi %d (%s)\n",
			  info.osabi, gdbarch_osabi_name (info.osabi));
      fprintf_unfiltered (gdb_stdlog,
			  "gdbarch_find_by_info: info.abfd %s\n",
			  host_address_to_string (info.abfd));
      fprintf_unfiltered (gdb_stdlog,
			  "gdbarch_find_by_info: info.tdep_info %s\n",
			  host_address_to_string (info.tdep_info));
    }

  /* Find the tdep code that knows about this architecture.  */
  for (rego = gdbarch_registry;
       rego != NULL;
       rego = rego->next)
    if (rego->bfd_architecture == info.bfd_arch_info->arch)
      break;
  if (rego == NULL)
    {
      if (gdbarch_debug)
	fprintf_unfiltered (gdb_stdlog, "gdbarch_find_by_info: "
			    "No matching architecture\n");
      return 0;
    }

  /* Ask the tdep code for an architecture that matches "info".  */
  new_gdbarch = rego->init (info, rego->arches);

  /* Did the tdep code like it?  No.  Reject the change and revert to
     the old architecture.  */
  if (new_gdbarch == NULL)
    {
      if (gdbarch_debug)
	fprintf_unfiltered (gdb_stdlog, "gdbarch_find_by_info: "
			    "Target rejected architecture\n");
      return NULL;
    }

  /* Is this a pre-existing architecture (as determined by already
     being initialized)?  Move it to the front of the architecture
     list (keeping the list sorted Most Recently Used).  */
  if (new_gdbarch->initialized_p)
    {
      struct gdbarch_list **list;
      struct gdbarch_list *self;
      if (gdbarch_debug)
	fprintf_unfiltered (gdb_stdlog, "gdbarch_find_by_info: "
			    "Previous architecture %s (%s) selected\n",
			    host_address_to_string (new_gdbarch),
			    new_gdbarch->bfd_arch_info->printable_name);
      /* Find the existing arch in the list.  */
      for (list = &rego->arches;
	   (*list) != NULL && (*list)->gdbarch != new_gdbarch;
	   list = &(*list)->next);
      /* It had better be in the list of architectures.  */
      gdb_assert ((*list) != NULL && (*list)->gdbarch == new_gdbarch);
      /* Unlink SELF.  */
      self = (*list);
      (*list) = self->next;
      /* Insert SELF at the front.  */
      self->next = rego->arches;
      rego->arches = self;
      /* Return it.  */
      return new_gdbarch;
    }

  /* It's a new architecture.  */
  if (gdbarch_debug)
    fprintf_unfiltered (gdb_stdlog, "gdbarch_find_by_info: "
			"New architecture %s (%s) selected\n",
			host_address_to_string (new_gdbarch),
			new_gdbarch->bfd_arch_info->printable_name);
  
  /* Insert the new architecture into the front of the architecture
     list (keep the list sorted Most Recently Used).  */
  {
    struct gdbarch_list *self = XNEW (struct gdbarch_list);
    self->next = rego->arches;
    self->gdbarch = new_gdbarch;
    rego->arches = self;
  }    

  /* Check that the newly installed architecture is valid.  Plug in
     any post init values.  */
  new_gdbarch->dump_tdep = rego->dump_tdep;
  verify_gdbarch (new_gdbarch);
  new_gdbarch->initialized_p = 1;

  if (gdbarch_debug)
    gdbarch_dump (new_gdbarch, gdb_stdlog);

  return new_gdbarch;
}

/* Make the specified architecture current.  */

void
set_target_gdbarch (struct gdbarch *new_gdbarch)
{
  gdb_assert (new_gdbarch != NULL);
  gdb_assert (new_gdbarch->initialized_p);
  current_inferior ()->gdbarch = new_gdbarch;
  gdb::observers::architecture_changed.notify (new_gdbarch);
  registers_changed ();
}

/* Return the current inferior's arch.  */

struct gdbarch *
target_gdbarch (void)
{
  return current_inferior ()->gdbarch;
}

void _initialize_gdbarch ();
void
_initialize_gdbarch ()
{
  add_setshow_zuinteger_cmd ("arch", class_maintenance, &gdbarch_debug, _("\\
Set architecture debugging."), _("\\
Show architecture debugging."), _("\\
When non-zero, architecture debugging is enabled."),
			    NULL,
			    show_gdbarch_debug,
			    &setdebuglist, &showdebuglist);
}
EOF

# close things off
exec 1>&2
../move-if-change new-gdbarch.c gdbarch.c
rm -f new-gdbarch.c