gas: add new command line option --gsframe

When --gsframe is specified, the assembler will generate a .sframe
section from the CFI directives in the assembly.

ChangeLog:

	* gas/as.c (parse_args): Parse args and set flag_gen_sframe.
	* gas/as.h: Introduce skeleton for --gsframe.
	* gas/doc/as.texi: document --gsframe.

1 files changed, 3 insertions, 0 deletions

diff --git a/gas/as.h b/gas/as.h
index 730e134..1b92407 100644
--- a/gas/as.h
+++ b/gas/as.h
@@ -337,6 +337,9 @@ COMMON int flag_execstack;
 /* TRUE if .note.GNU-stack section with SEC_CODE should be created */
 COMMON int flag_noexecstack;
 
+/* TRUE if .sframe section should be created.  */
+COMMON int flag_gen_sframe;
+
 /* name of emitted object file */
 COMMON const char *out_file_name;