From 2d7749ba418adde9536baf0d16d50a072b5841de Mon Sep 17 00:00:00 2001 From: segher Date: Fri, 30 Aug 2019 14:15:39 +0000 Subject: [PATCH 2/3] Backport from trunk 2019-08-22 Segher Boessenkool PR target/91481 * config/rs6000/rs6000.md (unspec): Delete UNSPEC_DARN, UNSPEC_DARN_32, and UNSPEC_DARN_RAW. (unspecv): New enumerator values UNSPECV_DARN, UNSPECV_DARN_32, and UNSPECV_DARN_RAW. (darn_32): Use an unspec_volatile, and UNSPECV_DARN_32. (darn_raw): Use an unspec_volatile, and UNSPECV_DARN_RAW. (darn): Use an unspec_volatile, and UNSPECV_DARN. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-8-branch@275181 138bc75d-0d04-0410-961f-82ee72b054a4 Upstream-Status: Backport CVE: CVE-2019-14847 p2 Affects <= 9.2.0 Dropped Change log changes Signed-off-by: Armin Kuster --- gcc/config/rs6000/rs6000.md | 12 ++++++------ 2 files changed, 20 insertions(+), 6 deletions(-) Index: gcc-8.3.0/gcc/config/rs6000/rs6000.md =================================================================== --- gcc-8.3.0.orig/gcc/config/rs6000/rs6000.md +++ gcc-8.3.0/gcc/config/rs6000/rs6000.md @@ -136,9 +136,6 @@ UNSPEC_LSQ UNSPEC_FUSION_GPR UNSPEC_STACK_CHECK - UNSPEC_DARN - UNSPEC_DARN_32 - UNSPEC_DARN_RAW UNSPEC_CMPRB UNSPEC_CMPRB2 UNSPEC_CMPEQB @@ -168,6 +165,9 @@ UNSPECV_EH_RR ; eh_reg_restore UNSPECV_ISYNC ; isync instruction UNSPECV_MFTB ; move from time base + UNSPECV_DARN ; darn 1 (deliver a random number) + UNSPECV_DARN_32 ; darn 2 + UNSPECV_DARN_RAW ; darn 0 UNSPECV_NLGR ; non-local goto receiver UNSPECV_MFFS ; Move from FPSCR UNSPECV_MTFSF ; Move to FPSCR Fields @@ -14608,21 +14608,21 @@ (define_insn "darn_32" [(set (match_operand:SI 0 "register_operand" "=r") - (unspec:SI [(const_int 0)] UNSPEC_DARN_32))] + (unspec_volatile:SI [(const_int 0)] UNSPECV_DARN_32))] "TARGET_P9_MISC" "darn %0,0" [(set_attr "type" "integer")]) (define_insn "darn_raw" [(set (match_operand:DI 0 "register_operand" "=r") - (unspec:DI [(const_int 0)] UNSPEC_DARN_RAW))] + (unspec_volatile:DI [(const_int 0)] UNSPECV_DARN_RAW))] "TARGET_P9_MISC && TARGET_64BIT" "darn %0,2" [(set_attr "type" "integer")]) (define_insn "darn" [(set (match_operand:DI 0 "register_operand" "=r") - (unspec:DI [(const_int 0)] UNSPEC_DARN))] + (unspec_volatile:DI [(const_int 0)] UNSPECV_DARN))] "TARGET_P9_MISC && TARGET_64BIT" "darn %0,1" [(set_attr "type" "integer")])