From: Saurabh Jha <[email protected]>
For mingw targets, there is no way to identify the end of function using
assembly directives right now.
This patch adds such directive as a comment. This is not a real
directive because some other things, like Structured Exception Handling
(SEH), needs to be supported before we can emit a real directive.
However, emitting an end of function marker now will let us modify
check-function-bodies in scanasm.exp, which in turn enables us to write
dg-compile tests for mingw target.
gcc/ChangeLog:
* config/aarch64/aarch64-coff.h
(ASM_COMMENT_START): Specify start of comment.
(ASM_DECLARE_FUNCTION_SIZE): Specify end of function as comment.
gcc/testsuite/ChangeLog:
* lib/scanasm.exp: Add support for mingw targets.
---
gcc/config/aarch64/aarch64-coff.h | 11 +++++++++--
gcc/testsuite/lib/scanasm.exp | 12 +++++++-----
2 files changed, 16 insertions(+), 7 deletions(-)
diff --git a/gcc/config/aarch64/aarch64-coff.h b/gcc/config/aarch64/aarch64-coff.h
index 72607262e1b..bcb3a782ba5 100644
--- a/gcc/config/aarch64/aarch64-coff.h
+++ b/gcc/config/aarch64/aarch64-coff.h
@@ -61,10 +61,17 @@
#define ASM_OUTPUT_SKIP(STREAM, NBYTES) \
fprintf (STREAM, "\t.space\t%d // skip\n", (int) (NBYTES))
-/* Definitions that are not yet supported by binutils for the
+#define ASM_COMMENT_START "//"
+
+/* ASM_OUTPUT_TYPE_DIRECTIVE is not yet supported by binutils for the
aarch64-w64-mingw32 target. */
#define ASM_OUTPUT_TYPE_DIRECTIVE(STREAM, NAME, TYPE)
-#define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL)
+
+/* Structured Exception Handling (SEH) is not yet supported by binutils
+ so adding seh_endproc as an assembly comment to mark the end of a
+ function. */
+#define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL) \
+ fprintf (FILE, "\t" ASM_COMMENT_START " seh_endproc\n")
#define TEXT_SECTION_ASM_OP "\t.text"
#define DATA_SECTION_ASM_OP "\t.data"
diff --git a/gcc/testsuite/lib/scanasm.exp b/gcc/testsuite/lib/scanasm.exp
index 51952a6a7f4..9582eea70ae 100644
--- a/gcc/testsuite/lib/scanasm.exp
+++ b/gcc/testsuite/lib/scanasm.exp
@@ -4,12 +4,12 @@
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
-#
+#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
-#
+#
# You should have received a copy of the GNU General Public License
# along with GCC; see the file COPYING3. If not see
# <http://www.gnu.org/licenses/>.
@@ -138,7 +138,7 @@ proc scan-assembler-not { args } {
set_required_options_for scan-assembler-not
-# Return the scan for the assembly for hidden visibility.
+# Return the scan for the assembly for hidden visibility.
proc hidden-scan-for { symbol } {
@@ -516,7 +516,7 @@ proc scan-assembler-times { args } {
set_required_options_for scan-assembler-times
-# Call pass if pattern is present within a lower or upper bound,
+# Call pass if pattern is present within a lower or upper bound,
# otherwise fail.
# ex /* { dg-final { scan-assembler-bound {RE} > 3 } }
proc scan-assembler-bound { args } {
@@ -563,7 +563,7 @@ proc scan-assembler-bound { args } {
error "scan-assembler-bound: illegal argument: $bound"
return
}
-
+
set fd [open $output_file r]
set text [read $fd]
close $fd
@@ -885,6 +885,8 @@ proc configure_check-function-bodies { config } {
set up_config(end) {^\}$}
} elseif { [istarget *-*-darwin*] } {
set up_config(end) {^LFE[0-9]+}
+ } elseif { [istarget aarch64*-*-mingw32] } {
+ set up_config(end) {seh_endproc}
} else {
set up_config(end) {^\s*\.size}
}
