Module Name: src
Committed By: rin
Date: Mon Oct 5 13:20:30 UTC 2020
Modified Files:
src/doc: HACKS
Log Message:
Update aes_ccm_tag() hack for m68k.
Even with ``memcmp fix'', GCC 9.4 miscompiles this function for -O[12].
But the situation was slightly changed from that with GCC 8.3:
* -O0 and -O1 work but -O2 fails for 68060 and 68040 (real hardware)
* -O0 and -O2 work but -O1 fails for 68020 and 68010 (TME)
To generate a diff of this commit:
cvs rdiff -u -r1.210 -r1.211 src/doc/HACKS
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/doc/HACKS
diff -u src/doc/HACKS:1.210 src/doc/HACKS:1.211
--- src/doc/HACKS:1.210 Mon Oct 5 10:44:09 2020
+++ src/doc/HACKS Mon Oct 5 13:20:30 2020
@@ -1,4 +1,4 @@
-# $NetBSD: HACKS,v 1.210 2020/10/05 10:44:09 rin Exp $
+# $NetBSD: HACKS,v 1.211 2020/10/05 13:20:30 rin Exp $
#
# This file is intended to document workarounds for currently unsolved
# (mostly) compiler bugs.
@@ -985,15 +985,14 @@ descr GCC 8.4 miscompiles dwarf2expr.c w
kcah
port m68k
-hack compile aes_ccm_tag() with -O0 for GCC8
+hack compile aes_ccm_tag() with -O0 for GCC8 and GCC9
cdate Mon Aug 10 06:27:29 UTC 2020
+mdate Mon Oct 5 22:00:00 JST 2020
who rin
file src/sys/crypto/aes/aes_ccm.c: 1.5
-descr GCC 8.4 miscompiles aes_ccm_tag() for m68k with optimization level
- -O[12], which results in failure in aes_ccm_selftest().
- This is observed for amiga (A1200, 68060), mac68k (Quadra 840AV,
- 68040), and luna68k (nono, 68030 emulator). However, it is not for
- sun3 (TME, 68020 emulator) and sun2 (TME, 68010 emulator).
- At the moment, it is unclear whether this is due to differences b/w
- 68010-20 vs 68030-60, or something wrong with TME.
+descr GCC 9.4 and 8.3 miscompile aes_ccm_tag() for m68k with optimization
+ level -O[12], which results in failure in aes_ccm_selftest().
+ For 9.4, -O0 and -O1 work but -O2 fails for amiga (A1200, 68060) and
+ mac68k (Quadra 840AV, 68040). Whereas -O0 and -O2 work but -O1 fails
+ for sun3 (TME, 68020 emulator) and sun2 (TME, 68010 emulator).
kcah
