\input texinfo @c -*- texinfo -*-
@setfilename gdbint.info
@include gdb-cfg.texi
-@dircategory Programming & development tools.
+@dircategory Software development
@direntry
* Gdb-Internals: (gdbint). The GNU debugger's internals.
@end direntry
@item NO_STD_REGS
This macro is deprecated.
-@item NO_SYS_FILE
-Define this if your system does not have a @code{<sys/file.h>}.
-
@item SIGWINCH_HANDLER
If your host defines @code{SIGWINCH}, you can define this to be the name
of a function to be called if @code{SIGWINCH} is received.
This is the signal for stopping @value{GDBN}. Defaults to
@code{SIGTSTP}. (Only redefined for the Convex.)
-@item USE_O_NOCTTY
-Define this if the interior's tty should be opened with the @code{O_NOCTTY}
-flag. (FIXME: This should be a native-only flag, but @file{inflow.c} is
-always linked in.)
-
@item USG
Means that System V (prior to SVR4) include files are in use. (FIXME:
This symbol is abused in @file{infrun.c}, @file{regex.c}, and
@code{FUNCTION_EPILOGUE_SIZE} to expand into the standard size of a
function's epilogue.
-@item FUNCTION_START_OFFSET
-@findex FUNCTION_START_OFFSET
+@item DEPRECATED_FUNCTION_START_OFFSET
+@findex DEPRECATED_FUNCTION_START_OFFSET
An integer, giving the offset in bytes from a function's address (as
used in the values of symbols, function pointers, etc.), and the
function's first genuine instruction.
This is zero on almost all machines: the function's address is usually
-the address of its first instruction. However, on the VAX, for example,
-each function starts with two bytes containing a bitmask indicating
-which registers to save upon entry to the function. The VAX @code{call}
-instructions check this value, and save the appropriate registers
-automatically. Thus, since the offset from the function's address to
-its first instruction is two bytes, @code{FUNCTION_START_OFFSET} would
-be 2 on the VAX.
+the address of its first instruction. However, on the VAX, for
+example, each function starts with two bytes containing a bitmask
+indicating which registers to save upon entry to the function. The
+VAX @code{call} instructions check this value, and save the
+appropriate registers automatically. Thus, since the offset from the
+function's address to its first instruction is two bytes,
+@code{DEPRECATED_FUNCTION_START_OFFSET} would be 2 on the VAX.
@item GCC_COMPILED_FLAG_SYMBOL
@itemx GCC2_COMPILED_FLAG_SYMBOL
Return the appropriate register set for a core file section with name
@var{sect_name} and size @var{sect_size}.
-
-@item RETURN_VALUE_ON_STACK(@var{type})
-@findex RETURN_VALUE_ON_STACK
-@cindex returning structures by value
-@cindex structures, returning by value
-
-Return non-zero if values of type TYPE are returned on the stack, using
-the ``struct convention'' (i.e., the caller provides a pointer to a
-buffer in which the callee should store the return value). This
-controls how the @samp{finish} command finds a function's return value,
-and whether an inferior function call reserves space on the stack for
-the return value.
-
-The full logic @value{GDBN} uses here is kind of odd.
-
-@itemize @bullet
-@item
-If the type being returned by value is not a structure, union, or array,
-and @code{RETURN_VALUE_ON_STACK} returns zero, then @value{GDBN}
-concludes the value is not returned using the struct convention.
-
-@item
-Otherwise, @value{GDBN} calls @code{USE_STRUCT_CONVENTION} (see below).
-If that returns non-zero, @value{GDBN} assumes the struct convention is
-in use.
-@end itemize
-
-In other words, to indicate that a given type is returned by value using
-the struct convention, that type must be either a struct, union, array,
-or something @code{RETURN_VALUE_ON_STACK} likes, @emph{and} something
-that @code{USE_STRUCT_CONVENTION} likes.
-
-Note that, in C and C@t{++}, arrays are never returned by value. In those
-languages, these predicates will always see a pointer type, never an
-array type. All the references above to arrays being returned by value
-apply only to other languages.
-
@item SOFTWARE_SINGLE_STEP_P()
@findex SOFTWARE_SINGLE_STEP_P
Define this as 1 if the target does not have a hardware single-step
them.
@end itemize
-@item PCC_SOL_BROKEN
-@findex PCC_SOL_BROKEN
-(Used only in the Convex target.)
-
@item PC_LOAD_SEGMENT
@findex PC_LOAD_SEGMENT
If defined, print information about the load segment for the program
This method replaces @code{CALL_DUMMY_LOCATION},
@code{DEPRECATED_REGISTER_SIZE}.
-@item DEPRECATED_REGISTER_BYTES
-@findex DEPRECATED_REGISTER_BYTES
-The total amount of space needed to store @value{GDBN}'s copy of the
-machine's register state.
-
-This is no longer needed. @value{GDBN} instead computes the size of the
-register buffer at run-time.
-
@item REGISTER_NAME(@var{i})
@findex REGISTER_NAME
Return the name of register @var{i} as a string. May return @code{NULL}
This method has been deprecated in favour of @code{gdbarch_return_value}
(@pxref{gdbarch_return_value}).
-@item SUN_FIXED_LBRAC_BUG
-@findex SUN_FIXED_LBRAC_BUG
-(Used only for Sun-3 and Sun-4 targets.)
-
@item SYMBOL_RELOADING_DEFAULT
@findex SYMBOL_RELOADING_DEFAULT
The default value of the ``symbol-reloading'' variable. (Never defined in
@findex read_sp
@findex read_fp
@anchor{TARGET_READ_SP} These change the behavior of @code{read_pc},
-@code{write_pc}, @code{read_sp} and @code{deprecated_read_fp}. For most
-targets, these may be left undefined. @value{GDBN} will call the read
-and write register functions with the relevant @code{_REGNUM} argument.
+@code{write_pc} and @code{read_sp}. For most targets, these may be
+left undefined. @value{GDBN} will call the read and write register
+functions with the relevant @code{_REGNUM} argument.
These macros are useful when a target keeps one of these registers in a
hard to get at place; for example, part in a segment register and part
previously saved using @code{SAVE_DUMMY_FRAME_TOS}.
@xref{SAVE_DUMMY_FRAME_TOS}.
-@item USE_STRUCT_CONVENTION (@var{gcc_p}, @var{type})
-@findex USE_STRUCT_CONVENTION
+@item DEPRECATED_USE_STRUCT_CONVENTION (@var{gcc_p}, @var{type})
+@findex DEPRECATED_USE_STRUCT_CONVENTION
If defined, this must be an expression that is nonzero if a value of the
given @var{type} being returned from a function must have space
allocated for it on the stack. @var{gcc_p} is true if the function
undefined) in @file{nm-@var{system}.h}.
@table @code
-@item ATTACH_DETACH
-@findex ATTACH_DETACH
-If defined, then @value{GDBN} will include support for the @code{attach} and
-@code{detach} commands.
@item CHILD_PREPARE_TO_STORE
@findex CHILD_PREPARE_TO_STORE
addresses in the upage, that are obtained via ptrace or from core files.
On systems that don't need this value, set it to zero.
-@item KERNEL_U_ADDR_BSD
-@findex KERNEL_U_ADDR_BSD
-Define this to cause @value{GDBN} to determine the address of @code{u} at
-runtime, by using Berkeley-style @code{nlist} on the kernel's image in
-the root directory.
-
@item KERNEL_U_ADDR_HPUX
@findex KERNEL_U_ADDR_HPUX
Define this to cause @value{GDBN} to determine the address of @code{u} at
defined in @file{nm.h} @emph{only} in order to override the default
definition in @file{procfs.c}.
-@item PTRACE_FP_BUG
-@findex PTRACE_FP_BUG
-See @file{mach386-xdep.c}.
-
@item PTRACE_ARG3_TYPE
@findex PTRACE_ARG3_TYPE
The type of the third argument to the @code{ptrace} system call, if it
restrict the memory being allocated to no more than a few kilobytes.}
@value{GDBN} uses the string function @code{xstrdup} and the print
-function @code{xasprintf}.
+function @code{xstrprintf}.
@emph{Pragmatics: @code{asprintf} and @code{strdup} can fail. Print
functions such as @code{sprintf} are very prone to buffer overflow
projects / deliverable / binutils-gdb.git / blobdiff