* Makefile.in (c-common.o, cppinit.o): Update.

	* c-common.c: Include except.h.
	(cb_register_builtins): Handle __USING_SJLJ_EXCEPTIONS__.
	Call TARGET_CPU_CPP_BUILTINS and TARGET_OS_CPP_BUILTINS.
	* cppinit.c (__USING_SJLJ_EXCEPTIONS): Not here.
	* defaults.h (TARGET_OS_CPP_BUILTINS, TARGET_CPU_CPP_BUILTINS,
	CPP_PREDEFINES): Handle here.
config:
	* alpha/alpha-interix.h, alpha/gnu.h, alpha/linux.h,
	alpha/netbsd.h, alpha/openbsd.h, alpha/osf.h, alpha/unicosmk.h,
	alpha/vms.h, alpha/vxworks.h: Remove CPP_PREDEFINES, define
	TARGET_OS_CPP_BUILTINS.
	* alpha/alpha.h (TARGET_CPU_CPP_BUILTINS): Define.
	(CPP_SPEC, EXTRA_SPECS): Update.
	(CPP_AM_BWX_SPEC, CPP_AM_MAX_SPEC, CPP_AM_FIX_SPEC,
	CPP_AM_CIX_SPEC, CPP_IM_EV4_SPEC, CPP_IM_EV5_SPEC,
	CPP_IM_EV6_SPEC, CPP_CPU_EV4_SPEC, CPP_CPU_EV5_SPEC,
	CPP_CPU_EV56_SPEC, CPP_CPU_PCA56_SPEC, CPP_CPU_EV6_SPEC,
	CPP_CPU_EV67_SPEC, CPP_CPU_DEFAULT_SPEC, CPP_CPU_SPEC): Remove.
doc:
	* tm.texi (TARGET_REGISTER_CPP_BUILTINS): Remove.
	(TARGET_OS_CPP_BUILTINS, TARGET_CPU_CPP_BUILTINS): Define.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@53410 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 19 insertions, 7 deletions

diff --git a/gcc/doc/tm.texi b/gcc/doc/tm.texi
index f382796937a..36ccaebcd35 100644
--- a/gcc/doc/tm.texi
+++ b/gcc/doc/tm.texi
@@ -623,12 +623,15 @@ The macro @code{STANDARD_STARTFILE_PREFIX}.
 Here are run-time target specifications.
 
 @table @code
-@findex TARGET_REGISTER_CPP_BUILTINS
-@item TARGET_REGISTER_CPP_BUILTINS
-This macro expands to a block of code that defines target-specific
-built-in preprocessor macros and assertions, using the functions
-@code{builtin_macro}, @code{builtin_macro_std} and
-@code{builtin_assert} declared in @file{c-lex.h}.
+@findex TARGET_CPU_CPP_BUILTINS
+@item TARGET_CPU_CPP_BUILTINS()
+This function-like macro expands to a block of code that defines
+built-in preprocessor macros and assertions for the target cpu, using
+the functions @code{builtin_macro}, @code{builtin_macro_std} and
+@code{builtin_assert} declared in @file{c-lex.h}.  When the front end
+calls this macro it provides a trailing semicolon, and since it has
+finished command line option processing your code can use those
+results freely.
 
 @code{builtin_assert} takes a string in the form you pass to the
 command-line option @option{-A}, such as @code{cpu=mips}, and creates
@@ -646,7 +649,16 @@ and possibly @code{unix}; passing @code{_mips} defines @code{__mips},
 @code{__mips__} and possibly @code{_mips}, and passing @code{_ABI64}
 defines only @code{_ABI64}.
 
-This macro obsoletes the @code{CPP_PREDEFINES} target macro.
+With @code{TARGET_OS_CPP_BUILTINS} this macro obsoletes the
+@code{CPP_PREDEFINES} target macro.
+
+@findex TARGET_OS_CPP_BUILTINS
+@item TARGET_OS_CPP_BUILTINS()
+Similarly to @code{TARGET_CPU_CPP_BUILTINS} but this macro is optional
+and is used for the target operating system instead.
+
+With @code{TARGET_CPU_CPP_BUILTINS} this macro obsoletes the
+@code{CPP_PREDEFINES} target macro.
 
 @findex CPP_PREDEFINES
 @item CPP_PREDEFINES