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gdbarch.sh

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executable file
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2045 lines (1747 loc) · 65.3 KB
 
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#!/bin/sh -u
# Architecture commands for GDB, the GNU debugger.
#
# Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
# 2008 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
compare_new ()
{
file=$1
if test ! -r ${file}
then
echo "${file} missing? cp new-${file} ${file}" 1>&2
elif diff -u ${file} new-${file}
then
echo "${file} unchanged" 1>&2
else
echo "${file} has changed? cp new-${file} ${file}" 1>&2
fi
}
# Format of the input table
read="class returntype function formal actual staticdefault predefault postdefault invalid_p print garbage_at_eol"
do_read ()
{
comment=""
class=""
while read line
do
if test "${line}" = ""
then
continue
elif test "${line}" = "#" -a "${comment}" = ""
then
continue
elif expr "${line}" : "#" > /dev/null
then
comment="${comment}
${line}"
else
# The semantics of IFS varies between different SH's. Some
# treat ``::' as three fields while some treat it as just too.
# Work around this by eliminating ``::'' ....
line="`echo "${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
# PREDEFAULT is a valid fallback definition of MEMBER when
# multi-arch is not enabled. This ensures that the
# default value, when multi-arch is the same as the
# default value when not multi-arch. POSTDEFAULT is
# always a valid definition of MEMBER as this again
# ensures consistency.
if [ -n "${postdefault}" ]
then
fallbackdefault="${postdefault}"
elif [ -n "${predefault}" ]
then
fallbackdefault="${predefault}"
else
fallbackdefault="0"
fi
#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}" -a "x${invalid_p}" != "x0" ] \
|| [ -n "${predefault}" -a "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, paddr_nz (for CORE_ADDR) or paddr_d
# (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:int:byte_order:::BFD_ENDIAN_BIG
#
i:enum gdb_osabi:osabi:::GDB_OSABI_UNKNOWN
#
i:const struct target_desc *:target_desc:::::::paddr_d ((long) gdbarch->target_desc)
# The bit byte-order has to do just with numbering of bits in debugging symbols
# and such. Conceptually, it's quite separate from byte/word byte order.
v:int:bits_big_endian:::1:(gdbarch->byte_order == BFD_ENDIAN_BIG)::0
# Number of bits in a char or unsigned char for the target machine.
# Just like CHAR_BIT in <limits.h> but describes the target machine.
# v:TARGET_CHAR_BIT:int:char_bit::::8 * sizeof (char):8::0:
#
# 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 "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: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)
# 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_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):
#
# One if \`char' acts like \`signed char', zero if \`unsigned char'.
v:int:char_signed:::1:-1:1
#
F:CORE_ADDR:read_pc:struct 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:void:pseudo_register_read:struct regcache *regcache, int cookednum, gdb_byte *buf:regcache, cookednum, buf
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
# 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.
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
# See gdbint.texinfo, and PUSH_DUMMY_CALL.
M:struct frame_id:dummy_id:struct frame_info *this_frame:this_frame
# Implement DUMMY_ID and PUSH_DUMMY_CALL, then delete
# deprecated_fp_regnum.
v:int:deprecated_fp_regnum:::-1:-1::0
# See gdbint.texinfo. See infcall.c.
M:CORE_ADDR:push_dummy_call:struct value *function, struct regcache *regcache, CORE_ADDR bp_addr, int nargs, struct value **args, CORE_ADDR sp, int struct_return, CORE_ADDR struct_addr:function, regcache, bp_addr, nargs, args, sp, struct_return, 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
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
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
# setjmp/longjmp support.
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:void:register_to_value:struct frame_info *frame, int regnum, struct type *type, gdb_byte *buf:frame, regnum, type, buf: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, 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.
f:struct value *:value_from_register:struct type *type, int regnum, struct frame_info *frame:type, regnum, frame::default_value_from_register::0
#
f:CORE_ADDR:pointer_to_address:struct type *type, const gdb_byte *buf:type, buf::unsigned_pointer_to_address::0
f: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 FUNCTYPE
# to return a value of type VALTYPE. FUNCTYPE 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 type *functype, struct type *valtype, struct regcache *regcache, gdb_byte *readbuf, const gdb_byte *writebuf:functype, valtype, regcache, readbuf, writebuf
m:CORE_ADDR:skip_prologue:CORE_ADDR ip:ip:0:0
M:CORE_ADDR:skip_main_prologue: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:
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
#
v:CORE_ADDR:frame_args_skip:::0:::0
M:CORE_ADDR:unwind_pc:struct frame_info *next_frame:next_frame
M:CORE_ADDR:unwind_sp:struct frame_info *next_frame:next_frame
# 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).
f:CORE_ADDR:addr_bits_remove:CORE_ADDR addr:addr::core_addr_identity::0
# It is not at all clear why gdbarch_smash_text_address is not folded into
# gdbarch_addr_bits_remove.
f:CORE_ADDR:smash_text_address:CORE_ADDR addr:addr::core_addr_identity::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: This should be replaced with something that inserts
# breakpoints using the breakpoint system instead of blatting memory directly
# (as with rs6000).
#
# 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.
#
# A return value of 1 means that the software_single_step breakpoints
# were inserted; 0 means they were not.
F:int:software_single_step:struct frame_info *frame:frame
# 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::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.
f:int:in_solib_return_trampoline:CORE_ADDR pc, char *name:pc, name::generic_in_solib_return_trampoline::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 funtion's epilogue. in_function_epilogue_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:in_function_epilogue_p:CORE_ADDR addr:addr:0:generic_in_function_epilogue_p::0
# Given a vector of command-line arguments, return a newly allocated
# string which, when passed to the create_inferior function, will be
# parsed (on Unix systems, by the shell) to yield the same vector.
# This function should call error() if the argument vector is not
# representable for this target or if this target does not support
# command-line arguments.
# ARGC is the number of elements in the vector.
# ARGV is an array of strings, one per argument.
m:char *:construct_inferior_arguments:int argc, char **argv:argc, argv::construct_inferior_arguments::0
f:void:elf_make_msymbol_special:asymbol *sym, struct minimal_symbol *msym:sym, msym::default_elf_make_msymbol_special::0
f:void:coff_make_msymbol_special:int val, struct minimal_symbol *msym:val, msym::default_coff_make_msymbol_special::0
v:const char *:name_of_malloc:::"malloc":"malloc"::0:gdbarch->name_of_malloc
v:int:cannot_step_breakpoint:::0:0::0
v:int:have_nonsteppable_watchpoint:::0:0::0
F:int: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:int type_flags:type_flags
M:int:address_class_name_to_type_flags:const char *name, int *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
# Return the appropriate register set for a core file section with
# name SECT_NAME and size SECT_SIZE.
M:const struct regset *:regset_from_core_section:const char *sect_name, size_t sect_size:sect_name, sect_size
# Supported register notes in a core file.
v:struct core_regset_section *:core_regset_sections:const char *name, int len::::::host_address_to_string (gdbarch->core_regset_sections)
# Read offset OFFSET of TARGET_OBJECT_LIBRARIES formatted shared libraries list from
# core file into buffer READBUF with length LEN.
M:LONGEST:core_xfer_shared_libraries:gdb_byte *readbuf, ULONGEST offset, LONGEST len:readbuf, offset, len
# 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
# The maximum length of an instruction on this architecture.
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. Or, return NULL to indicate that
# the instruction's effects have been completely simulated, with the
# resulting state written back to REGS.
#
# 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 your architecture doesn't need to adjust instructions before
# single-stepping them, consider using simple_displaced_step_copy_insn
# here.
M:struct displaced_step_closure *:displaced_step_copy_insn:CORE_ADDR from, CORE_ADDR to, struct regcache *regs:from, to, regs
# 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
# Free a closure returned by gdbarch_displaced_step_copy_insn.
#
# If you provide gdbarch_displaced_step_copy_insn, you must provide
# this function as well.
#
# If your architecture uses closures that don't need to be freed, then
# you can use simple_displaced_step_free_closure here.
#
# For a general explanation of displaced stepping and how GDB uses it,
# see the comments in infrun.c.
m:void:displaced_step_free_closure:struct displaced_step_closure *closure:closure::NULL::(! gdbarch->displaced_step_free_closure) != (! gdbarch->displaced_step_copy_insn)
# 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)
# 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
# Handle special encoding of static variables in stabs debug info.
F:char *:static_transform_name:char *name:name
# Set if the address in N_SO or N_FUN stabs may be zero.
v:int:sofun_address_maybe_missing:::0:0::0
# Signal translation: translate inferior's signal (host's) number into
# GDB's representation.
m:enum target_signal:target_signal_from_host:int signo:signo::default_target_signal_from_host::0
# Signal translation: translate GDB's signal number into inferior's host
# signal number.
m:int:target_signal_to_host:enum target_signal ts:ts::default_target_signal_to_host::0
# Record architecture-specific information from the symbol table.
M:void:record_special_symbol:struct objfile *objfile, asymbol *sym:objfile, sym
EOF
}
#
# The .log file
#
exec > new-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 $$
exit 1
fi
if [ "x${invalid_p}" = "x0" -a -n "${postdefault}" ]
then
echo "Error: postdefault is useless when invalid_p=0" 1>&2
kill $$
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
compare_new gdbarch.log
copyright ()
{
cat <<EOF
/* *INDENT-OFF* */ /* THIS FILE IS GENERATED */
/* Dynamic architecture support for GDB, the GNU debugger.
Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
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''.
The Bourne shell script \`\`gdbarch.sh'' creates the files
\`\`new-gdbarch.c'' and \`\`new-gdbarch.h and then compares them
against the existing \`\`gdbarch.[hc]''. Any differences found
being reported.
If editing this file, please also run gdbarch.sh and merge any
changes into that script. Conversely, when making sweeping changes
to this file, modifying gdbarch.sh and using its output may prove
easier. */
EOF
}
#
# The .h file
#
exec > new-gdbarch.h
copyright
cat <<EOF
#ifndef GDBARCH_H
#define GDBARCH_H
struct floatformat;
struct ui_file;
struct frame_info;
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 displaced_step_closure;
struct core_regset_section;
extern struct gdbarch *current_gdbarch;
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 ${returntype} gdbarch_${function} (struct gdbarch *gdbarch);\n"
printf "/* set_gdbarch_${function}() - not applicable - pre-initialized. */\n"
fi
done
# function typedef's
printf "\n"
printf "\n"
printf "/* The following are initialized by the target dependent code. */\n"
function_list | while do_read
do
if [ -n "${comment}" ]
then
echo "${comment}" | sed \
-e '2 s,#,/*,' \
-e '3,$ s,#, ,' \
-e '$ s,$, */,'
fi
if class_is_predicate_p
then
printf "\n"
printf "extern int gdbarch_${function}_p (struct gdbarch *gdbarch);\n"
fi
if class_is_variable_p
then
printf "\n"
printf "extern ${returntype} gdbarch_${function} (struct gdbarch *gdbarch);\n"
printf "extern void set_gdbarch_${function} (struct gdbarch *gdbarch, ${returntype} ${function});\n"
fi
if class_is_function_p
then
printf "\n"
if [ "x${formal}" = "xvoid" ] && class_is_multiarch_p
then
printf "typedef ${returntype} (gdbarch_${function}_ftype) (struct gdbarch *gdbarch);\n"
elif class_is_multiarch_p
then
printf "typedef ${returntype} (gdbarch_${function}_ftype) (struct gdbarch *gdbarch, ${formal});\n"
else
printf "typedef ${returntype} (gdbarch_${function}_ftype) (${formal});\n"
fi
if [ "x${formal}" = "xvoid" ]
then
printf "extern ${returntype} gdbarch_${function} (struct gdbarch *gdbarch);\n"
else
printf "extern ${returntype} gdbarch_${function} (struct gdbarch *gdbarch, ${formal});\n"
fi
printf "extern void set_gdbarch_${function} (struct gdbarch *gdbarch, gdbarch_${function}_ftype *${function});\n"
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 global \`\`current_gdbarch'' shall not be
used.
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). */
int byte_order;
/* Use default: NULL (ZERO). */
bfd *abfd;
/* Use default: NULL (ZERO). */
struct gdbarch_tdep_info *tdep_info;
/* 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);