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[AArch64][2.26] Backport support for ARMv8.1 Virtualization,Host Extensions.


Hello

This is a backport to 2.26 of the support for ARMv8.1 Virtualization
Host Extensions added by
https://sourceware.org/ml/binutils-cvs/2015-11/msg00130.html.

The original patch submission is at
https://sourceware.org/ml/binutils/2015-11/msg00041.html.

Tested aarch64-none-linux-gnu with cross-compiled check-binutils and
check-gas.

Ok for the branch?
Matthew

include/opcode/
2015-12-03  Matthew Wahab  <matthew.wahab@arm.com>

	* aarch64.h (AARCH64_FEATURE_V8_1): New.
	(AARCH64_ARCH_v8_1): Add AARCH64_FEATURE_V8_1.

opcodes/
2015-12-03  Matthew Wahab  <matthew.wahab@arm.com>

	* aarch64-opc.c (aarch64_sys_regs): Add spsr_el12, elr_el12,
	sctlr_el12, cpacr_el12, ttbr1_el2, ttbr0_el12, ttbr1_el12,
	tcr_el12, afsr0_el12, afsr1_el12, esr_el12, far_el12, mair_el12,
	amair_el12, vbar_el12, contextidr_el2, contextidr_el12,
	cntkctl_el12, cntp_tval_el02, cntp_ctl_el02, cntp_cval_el02,
	cntv_tval_el02, cntv_ctl_el02, cntv_cval_el02, cnthv_tval_el2,
	cnthv_ctl_el2, cnthv_cval_el2.
	(aarch64_sys_reg_supported_p): Update for the new system
	registers.

gas/testsuite/
2015-12-03  Matthew Wahab  <matthew.wahab@arm.com>

	* virthostext-directive.d: New.
	* virthostext.d: New.
	* virthostext.s: New.
>From 250aafa4773feafd5ca0a61f270b1e901dcd8987 Mon Sep 17 00:00:00 2001
From: Matthew Wahab <matthew.wahab@arm.com>
Date: Fri, 20 Nov 2015 16:09:34 +0000
Subject: [PATCH] [AArch64] Add support for ARMv8.1 Virtulization Host
 Extensions.

The ARMv8.1 architecture includes the Virtualization Host Extensions
which add a number of system registers. This patch adds support for
these system registers, making them available when -march=armv8.1-a is
selected.

include/opcode/
2015-11-20  Matthew Wahab  <matthew.wahab@arm.com>

	* aarch64.h (AARCH64_FEATURE_V8_1): New.
	(AARCH64_ARCH_v8_1): Add AARCH64_FEATURE_V8_1.

opcodes/
2015-11-20  Matthew Wahab  <matthew.wahab@arm.com>

	* aarch64-opc.c (aarch64_sys_regs): Add spsr_el12, elr_el12,
	sctlr_el12, cpacr_el12, ttbr1_el2, ttbr0_el12, ttbr1_el12,
	tcr_el12, afsr0_el12, afsr1_el12, esr_el12, far_el12, mair_el12,
	amair_el12, vbar_el12, contextidr_el2, contextidr_el12,
	cntkctl_el12, cntp_tval_el02, cntp_ctl_el02, cntp_cval_el02,
	cntv_tval_el02, cntv_ctl_el02, cntv_cval_el02, cnthv_tval_el2,
	cnthv_ctl_el2, cnthv_cval_el2.
	(aarch64_sys_reg_supported_p): Update for the new system
	registers.

gas/testsuite/
2015-11-20  Matthew Wahab  <matthew.wahab@arm.com>

	* gas/aarch64/virthostext-directive.d: New.
	* gas/aarch64/virthostext.d: New.
	* gas/aarch64/virthostext.s: New.

Change-Id: Iecb370591b1b6e9e00d81c8ccd9ae3b0f71794a2
---
 gas/testsuite/ChangeLog                           |  6 ++
 gas/testsuite/gas/aarch64/virthostext-directive.d | 65 +++++++++++++++++++++
 gas/testsuite/gas/aarch64/virthostext.d           | 65 +++++++++++++++++++++
 gas/testsuite/gas/aarch64/virthostext.s           | 69 +++++++++++++++++++++++
 include/opcode/ChangeLog                          |  5 ++
 include/opcode/aarch64.h                          |  2 +
 opcodes/ChangeLog                                 | 12 ++++
 opcodes/aarch64-opc.c                             | 66 ++++++++++++++++++++++
 8 files changed, 290 insertions(+)
 create mode 100644 gas/testsuite/gas/aarch64/virthostext-directive.d
 create mode 100644 gas/testsuite/gas/aarch64/virthostext.d
 create mode 100644 gas/testsuite/gas/aarch64/virthostext.s

diff --git a/gas/testsuite/gas/aarch64/virthostext-directive.d b/gas/testsuite/gas/aarch64/virthostext-directive.d
new file mode 100644
index 0000000..73baf9a
--- /dev/null
+++ b/gas/testsuite/gas/aarch64/virthostext-directive.d
@@ -0,0 +1,65 @@
+#objdump: -dr
+#as: --defsym DIRECTIVE=1
+#source: virthostext.s
+
+
+.*:     file format .*
+
+
+Disassembly of section \.text:
+
+0000000000000000 <.*>:
+   [0-9a-f]+:	d51d4007 	msr	spsr_el12, x7
+   [0-9a-f]+:	d53d4007 	mrs	x7, spsr_el12
+   [0-9a-f]+:	d51d4027 	msr	elr_el12, x7
+   [0-9a-f]+:	d53d4027 	mrs	x7, elr_el12
+  [0-9a-f]+:	d51d1007 	msr	sctlr_el12, x7
+  [0-9a-f]+:	d53d1007 	mrs	x7, sctlr_el12
+  [0-9a-f]+:	d51d1047 	msr	cpacr_el12, x7
+  [0-9a-f]+:	d53d1047 	mrs	x7, cpacr_el12
+  [0-9a-f]+:	d51c2027 	msr	ttbr1_el2, x7
+  [0-9a-f]+:	d53c2027 	mrs	x7, ttbr1_el2
+  [0-9a-f]+:	d51d2007 	msr	ttbr0_el12, x7
+  [0-9a-f]+:	d53d2007 	mrs	x7, ttbr0_el12
+  [0-9a-f]+:	d51d2027 	msr	ttbr1_el12, x7
+  [0-9a-f]+:	d53d2027 	mrs	x7, ttbr1_el12
+  [0-9a-f]+:	d51d2047 	msr	tcr_el12, x7
+  [0-9a-f]+:	d53d2047 	mrs	x7, tcr_el12
+  [0-9a-f]+:	d51d5107 	msr	afsr0_el12, x7
+  [0-9a-f]+:	d53d5107 	mrs	x7, afsr0_el12
+  [0-9a-f]+:	d51d5127 	msr	afsr1_el12, x7
+  [0-9a-f]+:	d53d5127 	mrs	x7, afsr1_el12
+  [0-9a-f]+:	d51d5207 	msr	esr_el12, x7
+  [0-9a-f]+:	d53d5207 	mrs	x7, esr_el12
+  [0-9a-f]+:	d51d6007 	msr	far_el12, x7
+  [0-9a-f]+:	d53d6007 	mrs	x7, far_el12
+  [0-9a-f]+:	d51da207 	msr	mair_el12, x7
+  [0-9a-f]+:	d53da207 	mrs	x7, mair_el12
+  [0-9a-f]+:	d51da307 	msr	amair_el12, x7
+  [0-9a-f]+:	d53da307 	mrs	x7, amair_el12
+  [0-9a-f]+:	d51dc007 	msr	vbar_el12, x7
+  [0-9a-f]+:	d53dc007 	mrs	x7, vbar_el12
+  [0-9a-f]+:	d51cd027 	msr	contextidr_el2, x7
+  [0-9a-f]+:	d53cd027 	mrs	x7, contextidr_el2
+  [0-9a-f]+:	d51dd027 	msr	contextidr_el12, x7
+  [0-9a-f]+:	d53dd027 	mrs	x7, contextidr_el12
+  [0-9a-f]+:	d51de107 	msr	cntkctl_el12, x7
+  [0-9a-f]+:	d53de107 	mrs	x7, cntkctl_el12
+  [0-9a-f]+:	d51de207 	msr	cntp_tval_el02, x7
+  [0-9a-f]+:	d53de207 	mrs	x7, cntp_tval_el02
+  [0-9a-f]+:	d51de227 	msr	cntp_ctl_el02, x7
+  [0-9a-f]+:	d53de227 	mrs	x7, cntp_ctl_el02
+  [0-9a-f]+:	d51de247 	msr	cntp_cval_el02, x7
+  [0-9a-f]+:	d53de247 	mrs	x7, cntp_cval_el02
+  [0-9a-f]+:	d51de307 	msr	cntv_tval_el02, x7
+  [0-9a-f]+:	d53de307 	mrs	x7, cntv_tval_el02
+  [0-9a-f]+:	d51de327 	msr	cntv_ctl_el02, x7
+  [0-9a-f]+:	d53de327 	mrs	x7, cntv_ctl_el02
+  [0-9a-f]+:	d51de347 	msr	cntv_cval_el02, x7
+  [0-9a-f]+:	d53de347 	mrs	x7, cntv_cval_el02
+  [0-9a-f]+:	d51ce307 	msr	cnthv_tval_el2, x7
+  [0-9a-f]+:	d53ce307 	mrs	x7, cnthv_tval_el2
+  [0-9a-f]+:	d51ce327 	msr	cnthv_ctl_el2, x7
+  [0-9a-f]+:	d53ce327 	mrs	x7, cnthv_ctl_el2
+  [0-9a-f]+:	d51ce347 	msr	cnthv_cval_el2, x7
+  [0-9a-f]+:	d53ce347 	mrs	x7, cnthv_cval_el2
diff --git a/gas/testsuite/gas/aarch64/virthostext.d b/gas/testsuite/gas/aarch64/virthostext.d
new file mode 100644
index 0000000..a5960ee
--- /dev/null
+++ b/gas/testsuite/gas/aarch64/virthostext.d
@@ -0,0 +1,65 @@
+#objdump: -dr
+#as: -march=armv8.1-a
+#source: virthostext.s
+
+
+.*:     file format .*
+
+
+Disassembly of section \.text:
+
+0000000000000000 <.*>:
+   [0-9a-f]+:	d51d4007 	msr	spsr_el12, x7
+   [0-9a-f]+:	d53d4007 	mrs	x7, spsr_el12
+   [0-9a-f]+:	d51d4027 	msr	elr_el12, x7
+   [0-9a-f]+:	d53d4027 	mrs	x7, elr_el12
+  [0-9a-f]+:	d51d1007 	msr	sctlr_el12, x7
+  [0-9a-f]+:	d53d1007 	mrs	x7, sctlr_el12
+  [0-9a-f]+:	d51d1047 	msr	cpacr_el12, x7
+  [0-9a-f]+:	d53d1047 	mrs	x7, cpacr_el12
+  [0-9a-f]+:	d51c2027 	msr	ttbr1_el2, x7
+  [0-9a-f]+:	d53c2027 	mrs	x7, ttbr1_el2
+  [0-9a-f]+:	d51d2007 	msr	ttbr0_el12, x7
+  [0-9a-f]+:	d53d2007 	mrs	x7, ttbr0_el12
+  [0-9a-f]+:	d51d2027 	msr	ttbr1_el12, x7
+  [0-9a-f]+:	d53d2027 	mrs	x7, ttbr1_el12
+  [0-9a-f]+:	d51d2047 	msr	tcr_el12, x7
+  [0-9a-f]+:	d53d2047 	mrs	x7, tcr_el12
+  [0-9a-f]+:	d51d5107 	msr	afsr0_el12, x7
+  [0-9a-f]+:	d53d5107 	mrs	x7, afsr0_el12
+  [0-9a-f]+:	d51d5127 	msr	afsr1_el12, x7
+  [0-9a-f]+:	d53d5127 	mrs	x7, afsr1_el12
+  [0-9a-f]+:	d51d5207 	msr	esr_el12, x7
+  [0-9a-f]+:	d53d5207 	mrs	x7, esr_el12
+  [0-9a-f]+:	d51d6007 	msr	far_el12, x7
+  [0-9a-f]+:	d53d6007 	mrs	x7, far_el12
+  [0-9a-f]+:	d51da207 	msr	mair_el12, x7
+  [0-9a-f]+:	d53da207 	mrs	x7, mair_el12
+  [0-9a-f]+:	d51da307 	msr	amair_el12, x7
+  [0-9a-f]+:	d53da307 	mrs	x7, amair_el12
+  [0-9a-f]+:	d51dc007 	msr	vbar_el12, x7
+  [0-9a-f]+:	d53dc007 	mrs	x7, vbar_el12
+  [0-9a-f]+:	d51cd027 	msr	contextidr_el2, x7
+  [0-9a-f]+:	d53cd027 	mrs	x7, contextidr_el2
+  [0-9a-f]+:	d51dd027 	msr	contextidr_el12, x7
+  [0-9a-f]+:	d53dd027 	mrs	x7, contextidr_el12
+  [0-9a-f]+:	d51de107 	msr	cntkctl_el12, x7
+  [0-9a-f]+:	d53de107 	mrs	x7, cntkctl_el12
+  [0-9a-f]+:	d51de207 	msr	cntp_tval_el02, x7
+  [0-9a-f]+:	d53de207 	mrs	x7, cntp_tval_el02
+  [0-9a-f]+:	d51de227 	msr	cntp_ctl_el02, x7
+  [0-9a-f]+:	d53de227 	mrs	x7, cntp_ctl_el02
+  [0-9a-f]+:	d51de247 	msr	cntp_cval_el02, x7
+  [0-9a-f]+:	d53de247 	mrs	x7, cntp_cval_el02
+  [0-9a-f]+:	d51de307 	msr	cntv_tval_el02, x7
+  [0-9a-f]+:	d53de307 	mrs	x7, cntv_tval_el02
+  [0-9a-f]+:	d51de327 	msr	cntv_ctl_el02, x7
+  [0-9a-f]+:	d53de327 	mrs	x7, cntv_ctl_el02
+  [0-9a-f]+:	d51de347 	msr	cntv_cval_el02, x7
+  [0-9a-f]+:	d53de347 	mrs	x7, cntv_cval_el02
+  [0-9a-f]+:	d51ce307 	msr	cnthv_tval_el2, x7
+  [0-9a-f]+:	d53ce307 	mrs	x7, cnthv_tval_el2
+  [0-9a-f]+:	d51ce327 	msr	cnthv_ctl_el2, x7
+  [0-9a-f]+:	d53ce327 	mrs	x7, cnthv_ctl_el2
+  [0-9a-f]+:	d51ce347 	msr	cnthv_cval_el2, x7
+  [0-9a-f]+:	d53ce347 	mrs	x7, cnthv_cval_el2
diff --git a/gas/testsuite/gas/aarch64/virthostext.s b/gas/testsuite/gas/aarch64/virthostext.s
new file mode 100644
index 0000000..6bf2369
--- /dev/null
+++ b/gas/testsuite/gas/aarch64/virthostext.s
@@ -0,0 +1,69 @@
+/* virthostext.s Test file for ARMv8.1 Virtualization Host Extension
+	support.
+
+   Copyright (C) 2015 Free Software Foundation, Inc.
+   Contributed by ARM Ltd.
+
+   This file is part of GAS.
+
+   GAS is free software; you can redistribute it and/or modify
+   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.
+
+   GAS 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 this program; see the file COPYING3.  If not,
+   see <http://www.gnu.org/licenses/>.  */
+
+	.macro rw_sys_reg sys_reg xreg
+	msr \sys_reg, \xreg
+	mrs \xreg, \sys_reg
+	.endm
+
+	.text
+	.ifdef DIRECTIVE
+	.arch armv8.1-a
+	.endif
+
+	rw_sys_reg spsr_el12 x7
+	rw_sys_reg elr_el12 x7
+
+	rw_sys_reg sctlr_el12 x7
+	rw_sys_reg cpacr_el12 x7
+
+	rw_sys_reg ttbr1_el2 x7
+	rw_sys_reg ttbr0_el12 x7
+	rw_sys_reg ttbr1_el12 x7
+
+	rw_sys_reg tcr_el12 x7
+
+	rw_sys_reg afsr0_el12 x7
+	rw_sys_reg afsr1_el12 x7
+
+	rw_sys_reg esr_el12 x7
+	rw_sys_reg far_el12 x7
+	rw_sys_reg mair_el12 x7
+	rw_sys_reg amair_el12 x7
+	rw_sys_reg vbar_el12 x7
+
+	rw_sys_reg contextidr_el2 x7
+	rw_sys_reg contextidr_el12 x7
+
+	rw_sys_reg cntkctl_el12 x7
+
+	rw_sys_reg cntp_tval_el02 x7
+	rw_sys_reg cntp_ctl_el02 x7
+	rw_sys_reg cntp_cval_el02 x7
+
+	rw_sys_reg cntv_tval_el02 x7
+	rw_sys_reg cntv_ctl_el02 x7
+	rw_sys_reg cntv_cval_el02 x7
+
+	rw_sys_reg cnthv_tval_el2 x7
+	rw_sys_reg cnthv_ctl_el2 x7
+	rw_sys_reg cnthv_cval_el2 x7
diff --git a/include/opcode/aarch64.h b/include/opcode/aarch64.h
index fcec92b..9addf40 100644
--- a/include/opcode/aarch64.h
+++ b/include/opcode/aarch64.h
@@ -47,6 +47,7 @@ typedef uint32_t aarch64_insn;
 #define AARCH64_FEATURE_PAN	0x00200000	/* PAN instructions.  */
 #define AARCH64_FEATURE_LOR	0x00400000	/* LOR instructions.  */
 #define AARCH64_FEATURE_RDMA	0x00800000	/* v8.1 SIMD instructions.  */
+#define AARCH64_FEATURE_V8_1	0x01000000	/* v8.1 features.  */
 
 /* Architectures are the sum of the base and extensions.  */
 #define AARCH64_ARCH_V8		AARCH64_FEATURE (AARCH64_FEATURE_V8, \
@@ -55,6 +56,7 @@ typedef uint32_t aarch64_insn;
 #define AARCH64_ARCH_V8_1	AARCH64_FEATURE (AARCH64_FEATURE_V8, \
 						 AARCH64_FEATURE_FP  \
 						 | AARCH64_FEATURE_SIMD	\
+						 | AARCH64_FEATURE_V8_1 \
 						 | AARCH64_FEATURE_LSE	\
 						 | AARCH64_FEATURE_PAN	\
 						 | AARCH64_FEATURE_LOR	\
diff --git a/opcodes/aarch64-opc.c b/opcodes/aarch64-opc.c
index 50dbd36..a19f36f 100644
--- a/opcodes/aarch64-opc.c
+++ b/opcodes/aarch64-opc.c
@@ -2743,7 +2743,9 @@ aarch64_print_operand (char *buf, size_t size, bfd_vma pc,
 const aarch64_sys_reg aarch64_sys_regs [] =
 {
   { "spsr_el1",         CPEN_(0,C0,0),	0 }, /* = spsr_svc */
+  { "spsr_el12",	CPEN_ (5, C0, 0), F_ARCHEXT },
   { "elr_el1",          CPEN_(0,C0,1),	0 },
+  { "elr_el12",	CPEN_ (5, C0, 1), F_ARCHEXT },
   { "sp_el0",           CPEN_(0,C1,0),	0 },
   { "spsel",            CPEN_(0,C2,0),	0 },
   { "daif",             CPEN_(3,C2,1),	0 },
@@ -2808,10 +2810,12 @@ const aarch64_sys_reg aarch64_sys_regs [] =
   { "sctlr_el1",        CPENC(3,0,C1,C0,0),	0 },
   { "sctlr_el2",        CPENC(3,4,C1,C0,0),	0 },
   { "sctlr_el3",        CPENC(3,6,C1,C0,0),	0 },
+  { "sctlr_el12",	CPENC (3, 5, C1, C0, 0), F_ARCHEXT },
   { "actlr_el1",        CPENC(3,0,C1,C0,1),	0 },
   { "actlr_el2",        CPENC(3,4,C1,C0,1),	0 },
   { "actlr_el3",        CPENC(3,6,C1,C0,1),	0 },
   { "cpacr_el1",        CPENC(3,0,C1,C0,2),	0 },
+  { "cpacr_el12",	CPENC (3, 5, C1, C0, 2), F_ARCHEXT },
   { "cptr_el2",         CPENC(3,4,C1,C1,2),	0 },
   { "cptr_el3",         CPENC(3,6,C1,C1,2),	0 },
   { "scr_el3",          CPENC(3,6,C1,C1,0),	0 },
@@ -2823,36 +2827,47 @@ const aarch64_sys_reg aarch64_sys_regs [] =
   { "ttbr0_el1",        CPENC(3,0,C2,C0,0),	0 },
   { "ttbr1_el1",        CPENC(3,0,C2,C0,1),	0 },
   { "ttbr0_el2",        CPENC(3,4,C2,C0,0),	0 },
+  { "ttbr1_el2",	CPENC (3, 4, C2, C0, 1), F_ARCHEXT },
   { "ttbr0_el3",        CPENC(3,6,C2,C0,0),	0 },
+  { "ttbr0_el12",	CPENC (3, 5, C2, C0, 0), F_ARCHEXT },
+  { "ttbr1_el12",	CPENC (3, 5, C2, C0, 1), F_ARCHEXT },
   { "vttbr_el2",        CPENC(3,4,C2,C1,0),	0 },
   { "tcr_el1",          CPENC(3,0,C2,C0,2),	0 },
   { "tcr_el2",          CPENC(3,4,C2,C0,2),	0 },
   { "tcr_el3",          CPENC(3,6,C2,C0,2),	0 },
+  { "tcr_el12",		CPENC (3, 5, C2, C0, 2), F_ARCHEXT },
   { "vtcr_el2",         CPENC(3,4,C2,C1,2),	0 },
   { "afsr0_el1",        CPENC(3,0,C5,C1,0),	0 },
   { "afsr1_el1",        CPENC(3,0,C5,C1,1),	0 },
   { "afsr0_el2",        CPENC(3,4,C5,C1,0),	0 },
   { "afsr1_el2",        CPENC(3,4,C5,C1,1),	0 },
   { "afsr0_el3",        CPENC(3,6,C5,C1,0),	0 },
+  { "afsr0_el12",	CPENC (3, 5, C5, C1, 0), F_ARCHEXT },
   { "afsr1_el3",        CPENC(3,6,C5,C1,1),	0 },
+  { "afsr1_el12",	CPENC (3, 5, C5, C1, 1), F_ARCHEXT },
   { "esr_el1",          CPENC(3,0,C5,C2,0),	0 },
   { "esr_el2",          CPENC(3,4,C5,C2,0),	0 },
   { "esr_el3",          CPENC(3,6,C5,C2,0),	0 },
+  { "esr_el12",		CPENC (3, 5, C5, C2, 0), F_ARCHEXT },
   { "fpexc32_el2",      CPENC(3,4,C5,C3,0),	0 },
   { "far_el1",          CPENC(3,0,C6,C0,0),	0 },
   { "far_el2",          CPENC(3,4,C6,C0,0),	0 },
   { "far_el3",          CPENC(3,6,C6,C0,0),	0 },
+  { "far_el12",		CPENC (3, 5, C6, C0, 0), F_ARCHEXT },
   { "hpfar_el2",        CPENC(3,4,C6,C0,4),	0 },
   { "par_el1",          CPENC(3,0,C7,C4,0),	0 },
   { "mair_el1",         CPENC(3,0,C10,C2,0),	0 },
   { "mair_el2",         CPENC(3,4,C10,C2,0),	0 },
   { "mair_el3",         CPENC(3,6,C10,C2,0),	0 },
+  { "mair_el12",	CPENC (3, 5, C10, C2, 0), F_ARCHEXT },
   { "amair_el1",        CPENC(3,0,C10,C3,0),	0 },
   { "amair_el2",        CPENC(3,4,C10,C3,0),	0 },
   { "amair_el3",        CPENC(3,6,C10,C3,0),	0 },
+  { "amair_el12",	CPENC (3, 5, C10, C3, 0), F_ARCHEXT },
   { "vbar_el1",         CPENC(3,0,C12,C0,0),	0 },
   { "vbar_el2",         CPENC(3,4,C12,C0,0),	0 },
   { "vbar_el3",         CPENC(3,6,C12,C0,0),	0 },
+  { "vbar_el12",	CPENC (3, 5, C12, C0, 0), F_ARCHEXT },
   { "rvbar_el1",        CPENC(3,0,C12,C0,1),	0 }, /* RO */
   { "rvbar_el2",        CPENC(3,4,C12,C0,1),	0 }, /* RO */
   { "rvbar_el3",        CPENC(3,6,C12,C0,1),	0 }, /* RO */
@@ -2861,6 +2876,8 @@ const aarch64_sys_reg aarch64_sys_regs [] =
   { "rmr_el3",          CPENC(3,6,C12,C0,2),	0 },
   { "isr_el1",          CPENC(3,0,C12,C1,0),	0 }, /* RO */
   { "contextidr_el1",   CPENC(3,0,C13,C0,1),	0 },
+  { "contextidr_el2",	CPENC (3, 4, C13, C0, 1), F_ARCHEXT },
+  { "contextidr_el12",	CPENC (3, 5, C13, C0, 1), F_ARCHEXT },
   { "tpidr_el0",        CPENC(3,3,C13,C0,2),	0 },
   { "tpidrro_el0",      CPENC(3,3,C13,C0,3),	0 }, /* RO */
   { "tpidr_el1",        CPENC(3,0,C13,C0,4),	0 },
@@ -2872,19 +2889,29 @@ const aarch64_sys_reg aarch64_sys_regs [] =
   { "cntvct_el0",       CPENC(3,3,C14,C0,2),	0 }, /* RO */
   { "cntvoff_el2",      CPENC(3,4,C14,C0,3),	0 },
   { "cntkctl_el1",      CPENC(3,0,C14,C1,0),	0 },
+  { "cntkctl_el12",	CPENC (3, 5, C14, C1, 0), F_ARCHEXT },
   { "cnthctl_el2",      CPENC(3,4,C14,C1,0),	0 },
   { "cntp_tval_el0",    CPENC(3,3,C14,C2,0),	0 },
+  { "cntp_tval_el02",	CPENC (3, 5, C14, C2, 0), F_ARCHEXT },
   { "cntp_ctl_el0",     CPENC(3,3,C14,C2,1),	0 },
+  { "cntp_ctl_el02",	CPENC (3, 5, C14, C2, 1), F_ARCHEXT },
   { "cntp_cval_el0",    CPENC(3,3,C14,C2,2),	0 },
+  { "cntp_cval_el02",	CPENC (3, 5, C14, C2, 2), F_ARCHEXT },
   { "cntv_tval_el0",    CPENC(3,3,C14,C3,0),	0 },
+  { "cntv_tval_el02",	CPENC (3, 5, C14, C3, 0), F_ARCHEXT },
   { "cntv_ctl_el0",     CPENC(3,3,C14,C3,1),	0 },
+  { "cntv_ctl_el02",	CPENC (3, 5, C14, C3, 1), F_ARCHEXT },
   { "cntv_cval_el0",    CPENC(3,3,C14,C3,2),	0 },
+  { "cntv_cval_el02",	CPENC (3, 5, C14, C3, 2), F_ARCHEXT },
   { "cnthp_tval_el2",   CPENC(3,4,C14,C2,0),	0 },
   { "cnthp_ctl_el2",    CPENC(3,4,C14,C2,1),	0 },
   { "cnthp_cval_el2",   CPENC(3,4,C14,C2,2),	0 },
   { "cntps_tval_el1",   CPENC(3,7,C14,C2,0),	0 },
   { "cntps_ctl_el1",    CPENC(3,7,C14,C2,1),	0 },
   { "cntps_cval_el1",   CPENC(3,7,C14,C2,2),	0 },
+  { "cnthv_tval_el2",	CPENC (3, 4, C14, C3, 0), F_ARCHEXT },
+  { "cnthv_ctl_el2",	CPENC (3, 4, C14, C3, 1), F_ARCHEXT },
+  { "cnthv_cval_el2",	CPENC (3, 4, C14, C3, 2), F_ARCHEXT },
   { "dacr32_el2",       CPENC(3,4,C3,C0,0),	0 },
   { "ifsr32_el2",       CPENC(3,4,C5,C0,1),	0 },
   { "teehbr32_el1",     CPENC(2,2,C1,C0,0),	0 },
@@ -3071,6 +3098,45 @@ aarch64_sys_reg_supported_p (const aarch64_feature_set features,
       && !AARCH64_CPU_HAS_FEATURE (features, AARCH64_FEATURE_PAN))
     return FALSE;
 
+  /* Virtualization host extensions: system registers.  */
+  if ((reg->value == CPENC (3, 4, C2, C0, 1)
+       || reg->value == CPENC (3, 4, C13, C0, 1)
+       || reg->value == CPENC (3, 4, C14, C3, 0)
+       || reg->value == CPENC (3, 4, C14, C3, 1)
+       || reg->value == CPENC (3, 4, C14, C3, 2))
+      && !AARCH64_CPU_HAS_FEATURE (features, AARCH64_FEATURE_V8_1))
+      return FALSE;
+
+  /* Virtualization host extensions: *_el12 names of *_el1 registers.  */
+  if ((reg->value == CPEN_ (5, C0, 0)
+       || reg->value == CPEN_ (5, C0, 1)
+       || reg->value == CPENC (3, 5, C1, C0, 0)
+       || reg->value == CPENC (3, 5, C1, C0, 2)
+       || reg->value == CPENC (3, 5, C2, C0, 0)
+       || reg->value == CPENC (3, 5, C2, C0, 1)
+       || reg->value == CPENC (3, 5, C2, C0, 2)
+       || reg->value == CPENC (3, 5, C5, C1, 0)
+       || reg->value == CPENC (3, 5, C5, C1, 1)
+       || reg->value == CPENC (3, 5, C5, C2, 0)
+       || reg->value == CPENC (3, 5, C6, C0, 0)
+       || reg->value == CPENC (3, 5, C10, C2, 0)
+       || reg->value == CPENC (3, 5, C10, C3, 0)
+       || reg->value == CPENC (3, 5, C12, C0, 0)
+       || reg->value == CPENC (3, 5, C13, C0, 1)
+       || reg->value == CPENC (3, 5, C14, C1, 0))
+      && !AARCH64_CPU_HAS_FEATURE (features, AARCH64_FEATURE_V8_1))
+    return FALSE;
+
+  /* Virtualization host extensions: *_el02 names of *_el0 registers.  */
+  if ((reg->value == CPENC (3, 5, C14, C2, 0)
+       || reg->value == CPENC (3, 5, C14, C2, 1)
+       || reg->value == CPENC (3, 5, C14, C2, 2)
+       || reg->value == CPENC (3, 5, C14, C3, 0)
+       || reg->value == CPENC (3, 5, C14, C3, 1)
+       || reg->value == CPENC (3, 5, C14, C3, 2))
+      && !AARCH64_CPU_HAS_FEATURE (features, AARCH64_FEATURE_V8_1))
+    return FALSE;
+
   return TRUE;
 }
 
-- 
2.1.4


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