call-frame unwinder to handle the IA-64 @code{.unwabi} unwinding directive,
usually used for signal or interrupt frames.
-This macro is called from @code{uw_update_context} in @file{unwind-ia64.c}.
-@var{context} is an @code{_Unwind_Context};
+This macro is called from @code{uw_update_context} in libgcc's
+@file{unwind-ia64.c}. @var{context} is an @code{_Unwind_Context};
@var{fs} is an @code{_Unwind_FrameState}. Examine @code{fs->unwabi}
for the abi and context in the @code{.unwabi} directive. If the
@code{.unwabi} directive can be handled, the register save addresses should
supporting conditional execution, independent of how they
represent conditional branches.
-@defmac REVERSE_CONDEXEC_PREDICATES_P (@var{op1}, @var{op2})
-A C expression that returns true if the conditional execution predicate
-@var{op1}, a comparison operation, is the inverse of @var{op2} and vice
-versa. Define this to return 0 if the target has conditional execution
-predicates that cannot be reversed safely. There is no need to validate
-that the arguments of op1 and op2 are the same, this is done separately.
-If no expansion is specified, this macro is defined as follows:
-
-@smallexample
-#define REVERSE_CONDEXEC_PREDICATES_P (x, y) \
- (GET_CODE ((x)) == reversed_comparison_code ((y), NULL))
-@end smallexample
-@end defmac
-
@node Costs
@section Describing Relative Costs of Operations
@cindex costs of instructions
function address than to call an address kept in a register.
@end defmac
-@defmac RANGE_TEST_NON_SHORT_CIRCUIT
+@defmac LOGICAL_OP_NON_SHORT_CIRCUIT
Define this macro if a non-short-circuit operation produced by
@samp{fold_range_test ()} is optimal. This macro defaults to true if
@code{BRANCH_COST} is greater than or equal to the value 2.
Define this macro to 0 if your target supports DWARF 2 frame unwind
information, but it does not yet work with exception handling.
Otherwise, if your target supports this information (if it defines
-@code{INCOMING_RETURN_ADDR_RTX} and either @code{UNALIGNED_INT_ASM_OP}
-or @code{OBJECT_FORMAT_ELF}), GCC will provide a default definition of 1.
+@code{INCOMING_RETURN_ADDR_RTX} and @code{OBJECT_FORMAT_ELF}),
+GCC will provide a default definition of 1.
@end defmac
@deftypefn {Common Target Hook} {enum unwind_info_type} TARGET_EXCEPT_UNWIND_INFO (struct gcc_options *@var{opts})
instead of the @code{__builtin_setjmp}/@code{__builtin_longjmp} machinery.
@end defmac
+@defmac JMP_BUF_SIZE
+This macro has no effect unless @code{DONT_USE_BUILTIN_SETJMP} is also
+defined. Define this macro if the default size of @code{jmp_buf} buffer
+for the @code{setjmp}/@code{longjmp}-based exception handling mechanism
+is not large enough, or if it is much too large.
+The default size is @code{FIRST_PSEUDO_REGISTER * sizeof(void *)}.
+@end defmac
+
@defmac DWARF_CIE_DATA_ALIGNMENT
This macro need only be defined if the target might save registers in the
function prologue at an offset to the stack pointer that is not aligned to
@c prevent bad page break with this line
These are hooks for DBX format.
-@defmac DBX_OUTPUT_LBRAC (@var{stream}, @var{name})
-Define this macro to say how to output to @var{stream} the debugging
-information for the start of a scope level for variable names. The
-argument @var{name} is the name of an assembler symbol (for use with
-@code{assemble_name}) whose value is the address where the scope begins.
-@end defmac
-
-@defmac DBX_OUTPUT_RBRAC (@var{stream}, @var{name})
-Like @code{DBX_OUTPUT_LBRAC}, but for the end of a scope level.
-@end defmac
-
-@defmac DBX_OUTPUT_NFUN (@var{stream}, @var{lscope_label}, @var{decl})
-Define this macro if the target machine requires special handling to
-output an @code{N_FUN} entry for the function @var{decl}.
-@end defmac
-
@defmac DBX_OUTPUT_SOURCE_LINE (@var{stream}, @var{line}, @var{counter})
A C statement to output DBX debugging information before code for line
number @var{line} of the current source file to the stdio stream
Returns the absolute value of @var{x}.
@end deftypefn
-@deftypefn Macro REAL_VALUE_TYPE REAL_VALUE_TRUNCATE (REAL_VALUE_TYPE @var{mode}, enum machine_mode @var{x})
-Truncates the floating point value @var{x} to fit in @var{mode}. The
-return value is still a full-size @code{REAL_VALUE_TYPE}, but it has an
-appropriate bit pattern to be output as a floating constant whose
-precision accords with mode @var{mode}.
-@end deftypefn
-
@deftypefn Macro void REAL_VALUE_TO_INT (HOST_WIDE_INT @var{low}, HOST_WIDE_INT @var{high}, REAL_VALUE_TYPE @var{x})
Converts a floating point value @var{x} into a double-precision integer
which is then stored into @var{low} and @var{high}. If the value is not
There is one macro used in defining the MIPS coprocessor interface which
you may want to override in subtargets; it is described below.
-@defmac ALL_COP_ADDITIONAL_REGISTER_NAMES
-A comma-separated list (with leading comma) of pairs describing the
-alternate names of coprocessor registers. The format of each entry should be
-@smallexample
-@{ @var{alternatename}, @var{register_number}@}
-@end smallexample
-Default: empty.
-@end defmac
-
@node PCH Target
@section Parameters for Precompiled Header Validity Checking
@cindex parameters, precompiled headers
five otherwise. This is best for most machines.
@end deftypefn
-@defmac CASE_USE_BIT_TESTS
-Define this macro to be a C expression to indicate whether C switch
-statements may be implemented by a sequence of bit tests. This is
-advantageous on processors that can efficiently implement left shift
-of 1 by the number of bits held in a register, but inappropriate on
-targets that would require a loop. By default, this macro returns
-@code{true} if the target defines an @code{ashlsi3} pattern, and
-@code{false} otherwise.
-@end defmac
-
@defmac WORD_REGISTER_OPERATIONS
Define this macro if operations between registers with integral mode
smaller than a word are always performed on the entire register.
to by @var{ce_info}.
@end defmac
-@defmac IFCVT_INIT_EXTRA_FIELDS (@var{ce_info})
-A C expression to initialize any extra fields in a @code{struct ce_if_block}
-structure, which are defined by the @code{IFCVT_EXTRA_FIELDS} macro.
-@end defmac
-
-@defmac IFCVT_EXTRA_FIELDS
-If defined, it should expand to a set of field declarations that will be
-added to the @code{struct ce_if_block} structure. These should be initialized
-by the @code{IFCVT_INIT_EXTRA_FIELDS} macro.
+@defmac IFCVT_MACHDEP_INIT (@var{ce_info})
+A C expression to initialize any machine specific data for if-conversion
+of the if-block in the @code{struct ce_if_block} structure that is pointed
+to by @var{ce_info}.
@end defmac
@deftypefn {Target Hook} void TARGET_MACHINE_DEPENDENT_REORG (void)
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