@samp{(0x80000000 * 8)}, but this is not representable on 32-bit hosts.
@end defmac
+@deftypefn {Target Hook} HOST_WIDE_INT TARGET_STATIC_RTX_ALIGNMENT (machine_mode @var{mode})
+This hook returns the preferred alignment in bits for a
+statically-allocated rtx, such as a constant pool entry. @var{mode}
+is the mode of the rtx. The default implementation returns
+@samp{GET_MODE_ALIGNMENT (@var{mode})}.
+@end deftypefn
+
@defmac DATA_ALIGNMENT (@var{type}, @var{basic-align})
If defined, a C expression to compute the alignment for a variable in
the static store. @var{type} is the data type, and @var{basic-align} is
addresses on the stack.
@end defmac
-@defmac STARTING_FRAME_OFFSET
-Offset from the frame pointer to the first local variable slot to be allocated.
-
-If @code{FRAME_GROWS_DOWNWARD}, find the next slot's offset by
-subtracting the first slot's length from @code{STARTING_FRAME_OFFSET}.
-Otherwise, it is found by adding the length of the first slot to the
-value @code{STARTING_FRAME_OFFSET}.
-@c i'm not sure if the above is still correct.. had to change it to get
-@c rid of an overfull. --mew 2feb93
-@end defmac
+@deftypefn {Target Hook} HOST_WIDE_INT TARGET_STARTING_FRAME_OFFSET (void)
+This hook returns the offset from the frame pointer to the first local
+variable slot to be allocated. If @code{FRAME_GROWS_DOWNWARD}, it is the
+offset to @emph{end} of the first slot allocated, otherwise it is the
+offset to @emph{beginning} of the first slot allocated. The default
+implementation returns 0.
+@end deftypefn
@defmac STACK_ALIGNMENT_NEEDED
Define to zero to disable final alignment of the stack during reload.
The nonzero default for this macro is suitable for most ports.
-On ports where @code{STARTING_FRAME_OFFSET} is nonzero or where there
+On ports where @code{TARGET_STARTING_FRAME_OFFSET} is nonzero or where there
is a register save block following the local block that doesn't require
alignment to @code{STACK_BOUNDARY}, it may be beneficial to disable
stack alignment and do it in the backend.
registers on machines with lots of registers.
@end deftypefn
+@deftypefn {Target Hook} int TARGET_INSN_COST (rtx_insn *@var{insn}, bool @var{speed})
+This target hook describes the relative costs of RTL instructions.
+
+In implementing this hook, you can use the construct
+@code{COSTS_N_INSNS (@var{n})} to specify a cost equal to @var{n} fast
+instructions.
+
+When optimizing for code size, i.e.@: when @code{speed} is
+false, this target hook should be used to estimate the relative
+size cost of an expression, again relative to @code{COSTS_N_INSNS}.
+@end deftypefn
+
@deftypefn {Target Hook} {unsigned int} TARGET_MAX_NOCE_IFCVT_SEQ_COST (edge @var{e})
This hook returns a value in the same units as @code{TARGET_RTX_COSTS},
giving the maximum acceptable cost for a sequence generated by the RTL
@end defmac
@deftypefn {Target Hook} void TARGET_ASM_OUTPUT_SOURCE_FILENAME (FILE *@var{file}, const char *@var{name})
-Output COFF information or DWARF debugging information which indicates that filename @var{name} is the current source file to the stdio stream @var{file}.
+Output DWARF debugging information which indicates that filename @var{name} is the current source file to the stdio stream @var{file}.
This target hook need not be defined if the standard form of output for the file format in use is appropriate.
@end deftypefn
function prologue at an offset to the stack pointer that is not aligned to
@code{UNITS_PER_WORD}. The definition should be the negative minimum
alignment if @code{STACK_GROWS_DOWNWARD} is true, and the positive
-minimum alignment otherwise. @xref{SDB and DWARF}. Only applicable if
+minimum alignment otherwise. @xref{DWARF}. Only applicable if
the target supports DWARF 2 frame unwind information.
@end defmac
* DBX Options:: Macros enabling specific options in DBX format.
* DBX Hooks:: Hook macros for varying DBX format.
* File Names and DBX:: Macros controlling output of file names in DBX format.
-* SDB and DWARF:: Macros for SDB (COFF) and DWARF formats.
+* DWARF:: Macros for DWARF format.
* VMS Debug:: Macros for VMS debug format.
@end menu
variable having address @var{x} (an RTL expression). The default
computation assumes that @var{x} is based on the frame-pointer and
gives the offset from the frame-pointer. This is required for targets
-that produce debugging output for DBX or COFF-style debugging output
-for SDB and allow the frame-pointer to be eliminated when the
-@option{-g} options is used.
+that produce debugging output for DBX and allow the frame-pointer to be
+eliminated when the @option{-g} option is used.
@end defmac
@defmac DEBUGGER_ARG_OFFSET (@var{offset}, @var{x})
produce when the user specifies just @option{-g}. Define
this if you have arranged for GCC to support more than one format of
debugging output. Currently, the allowable values are @code{DBX_DEBUG},
-@code{SDB_DEBUG}, @code{DWARF_DEBUG}, @code{DWARF2_DEBUG},
+@code{DWARF_DEBUG}, @code{DWARF2_DEBUG},
@code{XCOFF_DEBUG}, @code{VMS_DEBUG}, and @code{VMS_AND_DWARF2_DEBUG}.
When the user specifies @option{-ggdb}, GCC normally also uses the
The value of this macro only affects the default debugging output; the
user can always get a specific type of output by using @option{-gstabs},
-@option{-gcoff}, @option{-gdwarf-2}, @option{-gxcoff}, or @option{-gvms}.
+@option{-gdwarf-2}, @option{-gxcoff}, or @option{-gvms}.
@end defmac
@node DBX Options
@end defmac
@need 2000
-@node SDB and DWARF
-@subsection Macros for SDB and DWARF Output
+@node DWARF
+@subsection Macros for DWARF Output
@c prevent bad page break with this line
-Here are macros for SDB and DWARF output.
-
-@defmac SDB_DEBUGGING_INFO
-Define this macro to 1 if GCC should produce COFF-style debugging output
-for SDB in response to the @option{-g} option.
-@end defmac
+Here are macros for DWARF output.
@defmac DWARF2_DEBUGGING_INFO
Define this macro if GCC should produce dwarf version 2 format
reference to the given TLS symbol of the specified size.
@end deftypefn
-@defmac PUT_SDB_@dots{}
-Define these macros to override the assembler syntax for the special
-SDB assembler directives. See @file{sdbout.c} for a list of these
-macros and their arguments. If the standard syntax is used, you need
-not define them yourself.
-@end defmac
-
-@defmac SDB_DELIM
-Some assemblers do not support a semicolon as a delimiter, even between
-SDB assembler directives. In that case, define this macro to be the
-delimiter to use (usually @samp{\n}). It is not necessary to define
-a new set of @code{PUT_SDB_@var{op}} macros if this is the only change
-required.
-@end defmac
-
-@defmac SDB_ALLOW_UNKNOWN_REFERENCES
-Define this macro to allow references to unknown structure,
-union, or enumeration tags to be emitted. Standard COFF does not
-allow handling of unknown references, MIPS ECOFF has support for
-it.
-@end defmac
-
-@defmac SDB_ALLOW_FORWARD_REFERENCES
-Define this macro to allow references to structure, union, or
-enumeration tags that have not yet been seen to be handled. Some
-assemblers choke if forward tags are used, while some require it.
-@end defmac
-
-@defmac SDB_OUTPUT_SOURCE_LINE (@var{stream}, @var{line})
-A C statement to output SDB debugging information before code for line
-number @var{line} of the current source file to the stdio stream
-@var{stream}. The default is to emit an @code{.ln} directive.
-@end defmac
-
@need 2000
@node VMS Debug
@subsection Macros for VMS Debug Format
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