gcc.c (The Specs Language): Document spec functions.

* gcc.c (The Specs Language): Document spec functions.
(static_spec_functions, lookup_spec_function)
(eval_spec_function, handle_spec_function)
(if_exists_spec_function, alloc_args): New.
(execute): Abort if processing_spec_function is true.
(do_spec_1): Hand off spec to handle_spec_function if %:
is encountered.  If processing_spec_function is true,
end any pending argument when the end of the string is reached.
(main): Use alloc_args to allocate the initial argument vector.
* gcc.h (struct spec_function): New.
(lang_specific_spec_functions): New extern.

* config/netbsd-elf.h (STARTFILE_SPEC): Add if-exists(crti%O%s).
(ENDFILE_SPEC): Add if-exists(crtn%O%s).
* config/alpha/netbsd.h (ENDFILE_SPEC): Likewise.

* doc/invoke.texi: Document spec functions.

* cppspec.c (lang_specific_spec_functions): New.
* gccspec.c: Likewise.

* g++spec.c (lang_specific_spec_functions): New.

* g77spec.c (lang_specific_spec_functions): New.

* jvspec.c (lang_specific_spec_functions): New.

From-SVN: r59241

1 files changed, 11 insertions, 0 deletions

diff --git a/gcc/gcc.h b/gcc/gcc.h
index 7703387..feab0ef 100644
--- a/gcc/gcc.h
+++ b/gcc/gcc.h
@@ -23,6 +23,14 @@ Software Foundation, 59 Temple Place - Suite 330, Boston, MA
 
 #include "version.h"
 
+/* The mapping of a spec function name to the C function that
+   implements it.  */
+struct spec_function
+{       
+  const char *name;
+  const char *(*func) PARAMS ((int, const char **));
+};
+
 /* These are exported by gcc.c.  */
 extern int do_spec PARAMS ((const char *));
 extern void record_temp_file PARAMS ((const char *, int, int));
@@ -48,6 +56,9 @@ extern int n_infiles;
 /* Number of extra output files that lang_specific_pre_link may generate.  */
 extern int lang_specific_extra_outfiles;
 
+/* Table of language-specific spec functions.  */
+extern const struct spec_function lang_specific_spec_functions[];
+
 /* A vector of corresponding output files is made up later.  */
 
 extern const char **outfiles;