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Armin Kuster
9a6cfc0fee
Affects <= 9.2.0 Dropped Changelog changes. (From OE-Core rev: 4d56cf8743270c1998e8cb1524881a36de982c39) Signed-off-by: Armin Kuster <akuster@mvista.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
78 lines
2.6 KiB
Diff
78 lines
2.6 KiB
Diff
From 87bc784a7ca3a43182f7272241597a50d7491342 Mon Sep 17 00:00:00 2001
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From: segher <segher@138bc75d-0d04-0410-961f-82ee72b054a4>
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Date: Fri, 30 Aug 2019 13:51:26 +0000
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Subject: [PATCH] Backport from trunk 2019-08-22 Segher Boessenkool
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<segher@kernel.crashing.org>
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PR target/91481
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* config/rs6000/rs6000.md (unspec): Delete UNSPEC_DARN, UNSPEC_DARN_32,
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and UNSPEC_DARN_RAW.
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(unspecv): New enumerator values UNSPECV_DARN, UNSPECV_DARN_32, and
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UNSPECV_DARN_RAW.
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(darn_32): Use an unspec_volatile, and UNSPECV_DARN_32.
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(darn_raw): Use an unspec_volatile, and UNSPECV_DARN_RAW.
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(darn): Use an unspec_volatile, and UNSPECV_DARN.
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git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-9-branch@275175 138bc75d-0d04-0410-961f-82ee72b054a4
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Upstream-Status: Backport
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CVE: CVE-2019-15847 p2
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Affects <= 9.2.0
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Dropped Changelog changes
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Signed-off-by: Armin Kuster <akuster@mvista.com>
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---
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gcc/config/rs6000/rs6000.md | 12 ++++++------
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2 files changed, 20 insertions(+), 6 deletions(-)
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Index: gcc-9.2.0/gcc/config/rs6000/rs6000.md
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===================================================================
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--- gcc-9.2.0.orig/gcc/config/rs6000/rs6000.md
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+++ gcc-9.2.0/gcc/config/rs6000/rs6000.md
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@@ -137,9 +137,6 @@
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UNSPEC_LSQ
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UNSPEC_FUSION_GPR
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UNSPEC_STACK_CHECK
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- UNSPEC_DARN
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- UNSPEC_DARN_32
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- UNSPEC_DARN_RAW
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UNSPEC_CMPRB
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UNSPEC_CMPRB2
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UNSPEC_CMPEQB
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@@ -170,6 +167,9 @@
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UNSPECV_EH_RR ; eh_reg_restore
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UNSPECV_ISYNC ; isync instruction
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UNSPECV_MFTB ; move from time base
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+ UNSPECV_DARN ; darn 1 (deliver a random number)
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+ UNSPECV_DARN_32 ; darn 2
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+ UNSPECV_DARN_RAW ; darn 0
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UNSPECV_NLGR ; non-local goto receiver
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UNSPECV_MFFS ; Move from FPSCR
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UNSPECV_MFFSL ; Move from FPSCR light instruction version
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@@ -14333,21 +14333,21 @@
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(define_insn "darn_32"
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[(set (match_operand:SI 0 "register_operand" "=r")
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- (unspec:SI [(const_int 0)] UNSPEC_DARN_32))]
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+ (unspec_volatile:SI [(const_int 0)] UNSPECV_DARN_32))]
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"TARGET_P9_MISC"
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"darn %0,0"
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[(set_attr "type" "integer")])
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(define_insn "darn_raw"
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[(set (match_operand:DI 0 "register_operand" "=r")
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- (unspec:DI [(const_int 0)] UNSPEC_DARN_RAW))]
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+ (unspec_volatile:DI [(const_int 0)] UNSPECV_DARN_RAW))]
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"TARGET_P9_MISC && TARGET_64BIT"
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"darn %0,2"
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[(set_attr "type" "integer")])
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(define_insn "darn"
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[(set (match_operand:DI 0 "register_operand" "=r")
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- (unspec:DI [(const_int 0)] UNSPEC_DARN))]
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+ (unspec_volatile:DI [(const_int 0)] UNSPECV_DARN))]
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"TARGET_P9_MISC && TARGET_64BIT"
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"darn %0,1"
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[(set_attr "type" "integer")])
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