diff options
Diffstat (limited to 'gcc/doc/tm.texi')
| -rw-r--r-- | gcc/doc/tm.texi | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/gcc/doc/tm.texi b/gcc/doc/tm.texi index fe293e31eb2..1988c14ef20 100644 --- a/gcc/doc/tm.texi +++ b/gcc/doc/tm.texi @@ -3072,6 +3072,12 @@ for the abi and context in the @code{.unwabi} directive. If the be updated in @var{fs}. @end defmac +@defmac TARGET_USES_WEAK_UNWIND_INFO +A C expression that evaluates to true if the target requires unwind +info to be given comdat linkage. Define it to be @code{1} if comdat +linkage is necessary. The default is @code{0}. +@end defmac + @node Stack Checking @subsection Specifying How Stack Checking is Done @@ -6705,6 +6711,24 @@ commands that will make the symbol(s) associated with @var{decl} have hidden, protected or internal visibility as specified by @var{visibility}. @end deftypefn +@defmac TARGET_EXPLICIT_INSTANTIATIONS_ONE_ONLY +A C expression that evaluates to true if the target's linker expects +explicit template specializations, as well as implicit, to be given +linkonce semantics. The default is @code{1}. The C++ ABI requires +this macro to be nonzero. Define this macro for targets where full +C++ ABI compliance is impossible and where explicit and implicit +template specialization must be treated differently. +@end defmac + +@defmac TARGET_SUPPORTS_HIDDEN +A C expression that evaluates to true if the target supports hidden +visibility. By default this expression is true if and only if +@code{HAS_GAS_HIDDEN} is defined. Set this macro if the +@code{HAS_GAS_HIDDEN} macro gives the wrong answer for this +target. (For example, if the target's mechanism for supporting +hidden visibility is not the same as GAS's.) +@end defmac + @defmac ASM_OUTPUT_EXTERNAL (@var{stream}, @var{decl}, @var{name}) A C statement (sans semicolon) to output to the stdio stream @var{stream} any text necessary for declaring the name of an external @@ -7427,6 +7451,17 @@ If this macro is not defined, nothing special is output at the end of the jump-table. @end defmac +@deftypefn {Target Hook} void TARGET_ASM_EMIT_UNWIND_LABEL (@var{stream}, @var{decl}, @var{empty}) +This target hook emits a label at the beginning of each FDE. It +should be defined on targets where FDEs need special labels, and it +should write the appropriate label, for the FDE associated with the +function declaration @var{decl}, to the stdio stream @var{stream}. +The third argument, @var{empty}, is a boolean: true if this is a +placeholder label for an omitted FDE. + +The default is that FDEs are not given nonlocal labels. +@end deftypefn + @node Exception Region Output @subsection Assembler Commands for Exception Regions |