[PATCH 13/15] arc: Add support for ARCv2

cupertinomiranda
2020-11-11T16:18:37Z

From: Shahab Vahedi <shahab@synopsys.com>

Add remaining bits of the Synopsys ARCv2 (EM/HS) support into QEMU,
configure bits, arch_init and configuration files for softmmu (hardware
emulation).

Signed-off-by: Shahab Vahedi <shahab@synopsys.com>
Signed-off-by: Cupertino Miranda <cmiranda@synopsys.com>
---
configure | 2 ++
default-configs/arc-softmmu.mak | 5 +++++
default-configs/devices/arc-softmmu.mak | 7 +++++++
default-configs/targets/arc-softmmu.mak | 2 ++
disas.c | 2 ++
disas/meson.build | 1 +
hw/Kconfig | 1 +
hw/arc/Kconfig | 7 +++++++
hw/arc/Makefile.objs | 21 ---------------------
hw/arc/meson.build | 6 +-----
hw/meson.build | 1 +
include/disas/dis-asm.h | 10 +++++++++-
include/elf.h | 3 +++
include/exec/poison.h | 2 ++
include/sysemu/arch_init.h | 1 +
meson.build | 5 +++--
softmmu/arch_init.c | 2 ++
target/meson.build | 1 +
18 files changed, 50 insertions(+), 29 deletions(-)
create mode 100644 default-configs/arc-softmmu.mak
create mode 100644 default-configs/devices/arc-softmmu.mak
create mode 100644 default-configs/targets/arc-softmmu.mak
create mode 100644 hw/arc/Kconfig
delete mode 100644 hw/arc/Makefile.objs

diff --git a/configure b/configure
index 2c3c69f118..1c8a6c8fcf 100755
--- a/configure
+++ b/configure
@@ -672,6 +672,8 @@ elif check_define __arm__ ; then
cpu="arm"
elif check_define __aarch64__ ; then
cpu="aarch64"
+elif check_define __arc__ ; then
+ cpu="arc"
else
cpu=$(uname -m)
fi
diff --git a/default-configs/arc-softmmu.mak b/default-configs/arc-softmmu.mak
new file mode 100644
index 0000000000..4300a90c93
--- /dev/null
+++ b/default-configs/arc-softmmu.mak
@@ -0,0 +1,5 @@
+# Default configuration for arc-softmmu
+
+CONFIG_VIRTIO_MMIO=y
+CONFIG_SERIAL=y
+CONFIG_OPENCORES_ETH=y
diff --git a/default-configs/devices/arc-softmmu.mak b/default-configs/devices/arc-softmmu.mak
new file mode 100644
index 0000000000..0ce4176b2d
--- /dev/null
+++ b/default-configs/devices/arc-softmmu.mak
@@ -0,0 +1,7 @@
+# Default configuration for arc-softmmu
+
+CONFIG_SEMIHOSTING=n
+
+# Boards:
+#
+CONFIG_ARC_VIRT=y
diff --git a/default-configs/targets/arc-softmmu.mak b/default-configs/targets/arc-softmmu.mak
new file mode 100644
index 0000000000..31916cb23d
--- /dev/null
+++ b/default-configs/targets/arc-softmmu.mak
@@ -0,0 +1,2 @@
+TARGET_ARCH=arc
+TARGET_XML_FILES= gdb-xml/arc-v2-core.xml gdb-xml/arc-v2-aux.xml gdb-xml/arc-v2-other.xml
diff --git a/disas.c b/disas.c
index 7c18d7d2a7..0085a55fd7 100644
--- a/disas.c
+++ b/disas.c
@@ -208,6 +208,8 @@ static void initialize_debug_host(CPUDebug *s)
s->info.cap_insn_split = 6;
#elif defined(__hppa__)
s->info.print_insn = print_insn_hppa;
+#elif defined(__arc__)
+ s->info.print_insn = print_insn_arc;
#endif
}

diff --git a/disas/meson.build b/disas/meson.build
index 09a852742e..98271bafb9 100644
--- a/disas/meson.build
+++ b/disas/meson.build
@@ -4,6 +4,7 @@ subdir('libvixl')
common_ss.add(when: 'CONFIG_ALPHA_DIS', if_true: files('alpha.c'))
common_ss.add(when: 'CONFIG_ARM_A64_DIS', if_true: files('arm-a64.cc'))
common_ss.add_all(when: 'CONFIG_ARM_A64_DIS', if_true: libvixl_ss)
+common_ss.add(when: 'CONFIG_ARC_DIS', if_true: files('arc.c'))
common_ss.add(when: 'CONFIG_ARM_DIS', if_true: files('arm.c'))
common_ss.add(when: 'CONFIG_CRIS_DIS', if_true: files('cris.c'))
common_ss.add(when: 'CONFIG_HPPA_DIS', if_true: files('hppa.c'))
diff --git a/hw/Kconfig b/hw/Kconfig
index 4de1797ffd..7c942ba1c2 100644
--- a/hw/Kconfig
+++ b/hw/Kconfig
@@ -41,6 +41,7 @@ source vfio/Kconfig
source watchdog/Kconfig

# arch Kconfig
+source arc/Kconfig
source arm/Kconfig
source alpha/Kconfig
source avr/Kconfig
diff --git a/hw/arc/Kconfig b/hw/arc/Kconfig
new file mode 100644
index 0000000000..37402397c6
--- /dev/null
+++ b/hw/arc/Kconfig
@@ -0,0 +1,7 @@
+config ARC_VIRT
+ bool
+ select SERIAL
+ select VIRTIO_MMIO
+
+config ARC
+ bool
diff --git a/hw/arc/Makefile.objs b/hw/arc/Makefile.objs
deleted file mode 100644
index 28d7766cd9..0000000000
--- a/hw/arc/Makefile.objs
+++ /dev/null
@@ -1,21 +0,0 @@
-#
-# QEMU ARC CPU
-#
-# Copyright (c) 2019
-#
-# This library is free software; you can redistribute it and/or
-# modify it under the terms of the GNU Lesser General Public
-# License as published by the Free Software Foundation; either
-# version 2.1 of the License, or (at your option) any later version.
-#
-# This library 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
-# Lesser General Public License for more details.
-#
-# You should have received a copy of the GNU Lesser General Public
-# License along with this library; if not, see
-# http://www.gnu.org/licenses/lgpl-2.1.html
-#
-
-obj-y = arc_sim.o arc_uart.o sample.o pic_cpu.o boot.o board-hsdk.o sim-hs.o nsim.o
diff --git a/hw/arc/meson.build b/hw/arc/meson.build
index 6a587307a4..f3b517013d 100644
--- a/hw/arc/meson.build
+++ b/hw/arc/meson.build
@@ -1,13 +1,9 @@
arc_ss = ss.source_set()
arc_ss.add(files(
'arc_sim.c',
- 'arc_uart.c',
- 'sample.c',
'pic_cpu.c',
'boot.c',
- 'board-hsdk.c',
- 'sim-hs.c',
- 'nsim.c',
))
+arc_ss.add(when: 'CONFIG_ARC_VIRT', if_true: files('virt.c'))

hw_arch += {'arc': arc_ss}
diff --git a/hw/meson.build b/hw/meson.build
index 010de7219c..e2b14a9ed8 100644
--- a/hw/meson.build
+++ b/hw/meson.build
@@ -43,6 +43,7 @@ subdir('xen')
subdir('xenpv')

subdir('alpha')
+subdir('arc')
subdir('arm')
subdir('avr')
subdir('cris')
diff --git a/include/disas/dis-asm.h b/include/disas/dis-asm.h
index 2164762b46..cb63fd7550 100644
--- a/include/disas/dis-asm.h
+++ b/include/disas/dis-asm.h
@@ -206,7 +206,14 @@ enum bfd_architecture
bfd_arch_v850, /* NEC V850 */
#define bfd_mach_v850 0
bfd_arch_arc, /* Argonaut RISC Core */
-#define bfd_mach_arc_base 0
+#define bfd_mach_arc_a4 0
+#define bfd_mach_arc_a5 1
+#define bfd_mach_arc_arc600 2
+#define bfd_mach_arc_arc601 4
+#define bfd_mach_arc_arc700 3
+#define bfd_mach_arc_arcv2 5
+#define bfd_mach_arc_arcv2em 6
+#define bfd_mach_arc_arcv2hs 7
bfd_arch_m32r, /* Mitsubishi M32R/D */
#define bfd_mach_m32r 0 /* backwards compatibility */
bfd_arch_mn10200, /* Matsushita MN10200 */
@@ -459,6 +466,7 @@ int print_insn_xtensa (bfd_vma, disassemble_info*);
int print_insn_riscv32 (bfd_vma, disassemble_info*);
int print_insn_riscv64 (bfd_vma, disassemble_info*);
int print_insn_rx(bfd_vma, disassemble_info *);
+int print_insn_arc (bfd_vma, disassemble_info*);

#ifdef CONFIG_CAPSTONE
bool cap_disas_target(disassemble_info *info, uint64_t pc, size_t size);
diff --git a/include/elf.h b/include/elf.h
index 7a418ee559..030b15e49c 100644
--- a/include/elf.h
+++ b/include/elf.h
@@ -207,6 +207,9 @@ typedef struct mips_elf_abiflags_v0 {

#define EM_TILEGX 191 /* TILE-Gx */

+#define EM_ARC_COMPACT 93 /* Synopsys ARCompact */
+#define EM_ARC_COMPACT2 195 /* Synopsys ARCompact V2 */
+
#define EM_MOXIE 223 /* Moxie processor family */
#define EM_MOXIE_OLD 0xFEED

diff --git a/include/exec/poison.h b/include/exec/poison.h
index 7b9ac361dc..635ccc66a1 100644
--- a/include/exec/poison.h
+++ b/include/exec/poison.h
@@ -9,6 +9,7 @@
#pragma GCC poison TARGET_X86_64
#pragma GCC poison TARGET_AARCH64
#pragma GCC poison TARGET_ALPHA
+#pragma GCC poison TARGET_ARC
#pragma GCC poison TARGET_ARM
#pragma GCC poison TARGET_CRIS
#pragma GCC poison TARGET_HPPA
@@ -70,6 +71,7 @@

#pragma GCC poison CONFIG_ALPHA_DIS
#pragma GCC poison CONFIG_ARM_A64_DIS
+#pragma GCC poison CONFIG_ARC_DIS
#pragma GCC poison CONFIG_ARM_DIS
#pragma GCC poison CONFIG_CRIS_DIS
#pragma GCC poison CONFIG_HPPA_DIS
diff --git a/include/sysemu/arch_init.h b/include/sysemu/arch_init.h
index 54f069d491..5fbedebcb0 100644
--- a/include/sysemu/arch_init.h
+++ b/include/sysemu/arch_init.h
@@ -26,6 +26,7 @@ enum {
QEMU_ARCH_RISCV = (1 << 19),
QEMU_ARCH_RX = (1 << 20),
QEMU_ARCH_AVR = (1 << 21),
+ QEMU_ARCH_ARC = (1 << 22),

QEMU_ARCH_NONE = (1 << 31),
};
diff --git a/meson.build b/meson.build
index 39ac5cf6d8..6e4f8a2cbb 100644
--- a/meson.build
+++ b/meson.build
@@ -53,8 +53,8 @@ have_block = have_system or have_tools
python = import('python').find_installation()

supported_oses = ['windows', 'freebsd', 'netbsd', 'openbsd', 'darwin', 'sunos', 'linux']
-supported_cpus = ['ppc', 'ppc64', 's390x', 'riscv32', 'riscv64', 'x86', 'x86_64',
- 'arm', 'aarch64', 'mips', 'mips64', 'sparc', 'sparc64']
+supported_cpus = ['ppc', 'ppc64', 's390x', 'sparc64', 'riscv32', 'riscv64', 'x86', 'x86_64',
+ 'arc', 'arm', 'aarch64', 'mips', 'mips64', 'sparc', 'sparc64']

cpu = host_machine.cpu_family()
targetos = host_machine.system()
@@ -827,6 +827,7 @@ config_target_mak = {}

disassemblers = {
'alpha' : ['CONFIG_ALPHA_DIS'],
+ 'arc' : ['CONFIG_ARC_DIS'],
'arm' : ['CONFIG_ARM_DIS'],
'avr' : ['CONFIG_AVR_DIS'],
'cris' : ['CONFIG_CRIS_DIS'],
diff --git a/softmmu/arch_init.c b/softmmu/arch_init.c
index 7fd5c09b2b..27faed5edd 100644
--- a/softmmu/arch_init.c
+++ b/softmmu/arch_init.c
@@ -92,6 +92,8 @@ int graphic_depth = 32;
#define QEMU_ARCH QEMU_ARCH_XTENSA
#elif defined(TARGET_AVR)
#define QEMU_ARCH QEMU_ARCH_AVR
+#elif defined(TARGET_ARC)
+#define QEMU_ARCH QEMU_ARCH_ARC
#endif

const uint32_t arch_type = QEMU_ARCH;
diff --git a/target/meson.build b/target/meson.build
index 9f0ae93b75..f4a3a6425c 100644
--- a/target/meson.build
+++ b/target/meson.build
@@ -1,4 +1,5 @@
subdir('alpha')
+subdir('arc')
subdir('arm')
subdir('avr')
subdir('cris')
--
2.20.1