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No header includes qemu-common.h after this commit, as prescribed by
qemu-common.h's file comment.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20190523143508.25387-5-armbru@redhat.com>
[Rebased with conflicts resolved automatically, except for
include/hw/arm/xlnx-zynqmp.h hw/arm/nrf51_soc.c hw/arm/msf2-soc.c
block/qcow2-refcount.c block/qcow2-cluster.c block/qcow2-cache.c
target/arm/cpu.h target/lm32/cpu.h target/m68k/cpu.h target/mips/cpu.h
target/moxie/cpu.h target/nios2/cpu.h target/openrisc/cpu.h
target/riscv/cpu.h target/tilegx/cpu.h target/tricore/cpu.h
target/unicore32/cpu.h target/xtensa/cpu.h; bsd-user/main.c and
net/tap-bsd.c fixed up]
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Header guard symbols should match their file name to make guard
collisions less likely.
Cleaned up with scripts/clean-header-guards.pl, followed by some
renaming of new guard symbols picked by the script to better ones.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20190315145123.28030-6-armbru@redhat.com>
[Rebase to master: update include/hw/net/ne2000-isa.h]
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Commit dc99065b5f9 (v0.1.0) added dis-asm.h from binutils.
Commit 43d4145a986 (v0.1.5) inlined bfd.h into dis-asm.h to remove the
dependency on binutils.
Commit 76cad71136b (v1.4.0) moved dis-asm.h to include/disas/bfd.h.
The new name is confusing when you try to match against (pre GPLv3+)
binutils. Rename it back. Keep it in the same directory, of course.
Cc: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20190417191805.28198-17-armbru@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
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Remove machine generated constraints that are not
referenced by the pseudo-instruction constraints.
Cc: Palmer Dabbelt <palmer@sifive.com>
Cc: Sagar Karandikar <sagark@eecs.berkeley.edu>
Cc: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Cc: Alistair Francis <Alistair.Francis@wdc.com>
Signed-off-by: Michael Clark <mjc@sifive.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
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Add graphical description of nanoMIPS instruction pool organization.
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Reviewed-by: Aleksandar Rikalo <arikalo@wavecomp.com>
Message-Id: <1551800076-8104-3-git-send-email-aleksandar.markovic@rt-rk.com>
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Correct comments to handlers of some DSP instructions.
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Reviewed-by: Aleksandar Rikalo <arikalo@wavecomp.com>
Message-Id: <1551800076-8104-2-git-send-email-aleksandar.markovic@rt-rk.com>
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Rename function extract_ac_13_12() to extract_ac_15_14().
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Reviewed-by: Aleksandar Rikalo <arikalo@wavecomp.com>
Message-Id: <1551185735-17154-3-git-send-email-aleksandar.markovic@rt-rk.com>
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Amend some DSP instructions related comments.
Reviewed-by: Aleksandar Rikalo <arikalo@wavecomp.com>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
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There are not many, and they are all simple mistakes that ended up
being committed. Remove them.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20181213223737.11793-2-pbonzini@redhat.com>
Reviewed-by: Wainer dos Santos Moschetta <wainersm@redhat.com>
Acked-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Add "nanoMIPS32 Instruction Set Technical Reference Manual" as
a reference.
Reviewed-by: Aleksandar Rikalo <arikalo@wavecomp.com>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
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Reorder declarations and definitions of gpr decoders by number of
input bits of corresponding encoding type.
Reviewed-by: Aleksandar Rikalo <arikalo@wavecomp.com>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
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Comment the decoder of 'gpr1' gpr encoding type in nanoMIPS
disassembler.
Reviewed-by: Aleksandar Rikalo <arikalo@wavecomp.com>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
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Rename the decoder of 'gpr1' gpr encoding type in nanoMIPS
disassembler.
Reviewed-by: Aleksandar Rikalo <arikalo@wavecomp.com>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
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Comment the decoder of 'gpr2.reg2' gpr encoding type in nanoMIPS
disassembler.
Reviewed-by: Aleksandar Rikalo <arikalo@wavecomp.com>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
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Rename the decoder of 'gpr2.reg2' gpr encoding type in nanoMIPS
disassembler.
Reviewed-by: Aleksandar Rikalo <arikalo@wavecomp.com>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
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Comment the decoder of 'gpr2.reg1' gpr encoding type in nanoMIPS
disassembler.
Reviewed-by: Aleksandar Rikalo <arikalo@wavecomp.com>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
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Rename the decoder of 'gpr2.reg1' gpr encoding type in nanoMIPS
disassembler.
Reviewed-by: Aleksandar Rikalo <arikalo@wavecomp.com>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
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Comment the decoder of 'gpr4.zero' gpr encoding type in nanoMIPS
disassembler.
Reviewed-by: Aleksandar Rikalo <arikalo@wavecomp.com>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
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Rename the decoder of 'gpr4.zero' gpr encoding type in nanoMIPS
disassembler.
Reviewed-by: Aleksandar Rikalo <arikalo@wavecomp.com>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
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Comment the decoder of 'gpr4' gpr encoding type in nanoMIPS
disassembler.
Reviewed-by: Aleksandar Rikalo <arikalo@wavecomp.com>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
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Rename the decoder of 'gpr4' gpr encoding type in nanoMIPS
disassembler.
Reviewed-by: Aleksandar Rikalo <arikalo@wavecomp.com>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
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Comment the decoder of 'gpr3.src.store' gpr encoding type in nanoMIPS
disassembler.
Reviewed-by: Aleksandar Rikalo <arikalo@wavecomp.com>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
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Rename the decoder of 'gpr3.src.store' gpr encoding type in nanoMIPS
disassembler.
Reviewed-by: Aleksandar Rikalo <arikalo@wavecomp.com>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
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Comment the decoder of 'gpr3' gpr encoding type in nanoMIPS
disassembler.
Reviewed-by: Aleksandar Rikalo <arikalo@wavecomp.com>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
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Rename the decoder of 'gpr3' gpr encoding type in nanoMIPS
disassembler.
Reviewed-by: Aleksandar Rikalo <arikalo@wavecomp.com>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
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Fix order of extraction function invocations so that extraction
goes from MSB side to LSB side of the given instruction coding
content. This is desireable because of consistency and easier
visual spotting of errors.
After this patch, all such invocations should be in the desired
order.
Reviewed-by: Aleksandar Rikalo <arikalo@wavecomp.com>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
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Rename more functions that have names that are hard to understand.
Reviewed-by: Aleksandar Rikalo <arikalo@wavecomp.com>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
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Rename NMD::extract_ft_20_19_18_17_16(uint64 instruction) to
NMD::extract_ft_25_24_23_22_21(uint64 instruction).
Reviewed-by: Aleksandar Rikalo <arikalo@wavecomp.com>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
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Rename NMD::extract_fs_15_14_13_12_11(uint64 instruction) to
NMD::extract_fs_20_19_18_17_16(uint64 instruction).
Reviewed-by: Aleksandar Rikalo <arikalo@wavecomp.com>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
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Rename NMD::extract_fd_10_9_8_7_6(uint64 instruction) to
NMD::extract_fd_15_14_13_12_11(uint64 instruction).
Reviewed-by: Aleksandar Rikalo <arikalo@wavecomp.com>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
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Rename some functions that have names that are hard to understand.
Reviewed-by: Aleksandar Rikalo <arikalo@wavecomp.com>
Reviewed-by: Stefan Markovic <smarkovic@wavecomp.com>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
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Fix order of extraction function invocations so that extraction
goes from MSB side to LSB side of the given instruction coding
content. This is desireable because of consistency and easier
visual spotting of errors.
Reviewed-by: Aleksandar Rikalo <arikalo@wavecomp.com>
Reviewed-by: Stefan Markovic <smarkovic@wavecomp.com>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
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Fix wrong function name. The convention in these files is that names of
extraction functions should reflect bit patterns they are extracting.
Reviewed-by: Aleksandar Rikalo <arikalo@wavecomp.com>
Reviewed-by: Stefan Markovic <smarkovic@wavecomp.com>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
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Some functions were not used at all. Compiler doesn't complain
since they are class memebers. Remove them - no future usage is
planned.
Reviewed-by: Aleksandar Rikalo <arikalo@wavecomp.com>
Reviewed-by: Stefan Markovic <smarkovic@wavecomp.com>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
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Fix several mistakes in preambles of nanomips disassembler source
files.
Reviewed-by: Aleksandar Rikalo <arikalo@wavecomp.com>
Reviewed-by: Stefan Markovic <smarkovic@wavecomp.com>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
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Use POSIX types and format strings.
Reviewed-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Signed-off-by: Stefan Weil <sw@weilnetz.de>
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This causes a build error with debian sid, riscv64 host:
disas/microblaze.c:179: error: "REG_SP" redefined [-Werror]
#define REG_SP 1 /* stack pointer */
In file included from /usr/include/signal.h:306,
from include/qemu/osdep.h:101,
from disas/microblaze.c:36:
/usr/include/riscv64-linux-gnu/sys/ucontext.h:36: note: this is the location of the previous definition
# define REG_SP 2
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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Implement the addex instruction introduced in ISA V3.00 in qemu tcg.
The add extended using alternate carry bit (addex) instruction performs
the same operation as the add extended (adde) instruction, but using the
overflow (ov) field in the fixed point exception register (xer) as the
carry in and out instead of the carry (ca) field.
The instruction has a Z23-form, not an XO form, as follows:
------------------------------------------------------------------
| 31 | RT | RA | RB | CY | 170 | 0 |
------------------------------------------------------------------
0 6 11 16 21 23 31 32
However since the only valid form of the instruction defined so far is
CY = 0, we can treat this like an XO form instruction.
There is no dot form (addex.) of the instruction and the summary overflow
(so) bit in the xer is not modified by this instruction.
For simplicity we reuse the gen_op_arith_add function and add a function
argument to specify where the carry in input should come from and the
carry out output be stored (note must be the same location).
Signed-off-by: Suraj Jitindar Singh <sjitindarsingh@gmail.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
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Add disassembler support for nanoMIPS.
Reviewed-by: Stefan Markovic <smarkovic@wavecomp.com>
Signed-off-by: Matthew Fortune <matthew.fortune@mips.com>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
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Many of these are marked as "intentional/fix required" because they
just need adding a fall through comment. This is exactly what this
patch does, except for target/mips/translate.c where it is easier to
duplicate the code, and hw/audio/sb16.c where I consulted the DOSBox
sources and decide to just remove the LOG_UNIMP before the fallthrough.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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"move16 %a0@+,%a1@" and "fmovel (cpid=3) %a0@-,%fpcr"
share the same opcode.
To fix that, backport the fix from binutils:
2005-11-10 Andreas Schwab <schwab@suse.de>
* m68k-dis.c (print_insn_m68k): Only match FPU insns with
coprocessor ID 1.
Reported-by: Thomas Huth <huth@tuxfamily.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Tested-by: Thomas Huth <huth@tuxfamily.org>
Message-Id: <20180625203559.21370-2-laurent@vivier.eu>
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This fixes an issue when disassembling rv128 c.sqsp,
where the code erroneously fell through to c.swsp.
Cc: Palmer Dabbelt <palmer@sifive.com>
Cc: Sagar Karandikar <sagark@eecs.berkeley.edu>
Cc: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Cc: Alistair Francis <Alistair.Francis@wdc.com>
Cc: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Michael Clark <mjc@sifive.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
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This was added to help debug issues using -d in_asm. It is
useful to see the instruction bytes, as one can detect if
one is trying to execute ASCII or device-tree magic.
Cc: Sagar Karandikar <sagark@eecs.berkeley.edu>
Cc: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Signed-off-by: Michael Clark <mjc@sifive.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
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This fixes a bug in the disassembler constraints used
to lift instructions into pseudo-instructions, whereby
addiw instructions are always lifted to sext.w instead
of just lifting addiw with a zero immediate.
An associated fix has been made to the metadata used to
machine generate the disseasembler:
https://github.com/michaeljclark/riscv-meta/
commit/4a6b2f3898430768acfe201405224d2ea31e1477
Cc: Sagar Karandikar <sagark@eecs.berkeley.edu>
Cc: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Cc: Palmer Dabbelt <palmer@sifive.com>
Cc: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Michael Clark <mjc@sifive.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
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The RISC-V disassembler has no dependencies outside of the 'disas'
directory so it can be applied independently. The majority of the
disassembler is machine-generated from instruction set metadata:
- https://github.com/michaeljclark/riscv-meta
Expected checkpatch errors for consistency and brevity reasons:
ERROR: line over 90 characters
ERROR: trailing statements should be on next line
ERROR: space prohibited between function name and open parenthesis '('
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Michael Clark <mjc@sifive.com>
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target/xtensa updates:
- make mini-bootloader independent of the initial CPU state;
- add noMMU XTFPGA variants;
- add two noMMU cores: de212 and sample_controller;
- fix issues reported by coverity against xtensa translator and disassembler.
# gpg: Signature made Mon 22 Jan 2018 20:00:01 GMT
# gpg: using RSA key 0x51F9CC91F83FA044
# gpg: Good signature from "Max Filippov <filippov@cadence.com>"
# gpg: aka "Max Filippov <max.filippov@cogentembedded.com>"
# gpg: aka "Max Filippov <jcmvbkbc@gmail.com>"
# Primary key fingerprint: 2B67 854B 98E5 327D CDEB 17D8 51F9 CC91 F83F A044
* remotes/xtensa/tags/20180122-xtensa:
target/xtensa: disas/xtensa: fix coverity warnings
target/xtensa: add sample_controller core
target/xtensa: allow different default CPU for MMU/noMMU
target/xtensa: add de212 core
hw/xtensa/xtfpga: support noMMU cores
hw/xtensa/xtfpga: extract flash configuration
hw/xtensa: extract xtensa_create_memory_regions
target/xtensa: fix default sysrom/sysram addresses
hw/xtensa/xtfpga: clean up function/structure names
hw/xtensa/xtfpga: rewrite mini bootloader
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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Coverity warnings CID 1385146, 1385148 1385149 and 1385150 point that
xtensa_opcode_num_operands and xtensa_format_num_slots may return -1
even when xtensa_opcode_decode and xtensa_format_decode succeed. In that
case unsigned counters used to iterate through operands/slots will not
do the right thing.
Make counters and loop bounds signed to fix the warnings.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
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Spotted thanks to ASAN:
==25226==ERROR: AddressSanitizer: global-buffer-overflow on address 0x556715a1f120 at pc 0x556714b6f6b1 bp 0x7ffcdfac1360 sp 0x7ffcdfac1350
READ of size 1 at 0x556715a1f120 thread T0
#0 0x556714b6f6b0 in init_disasm /home/elmarco/src/qemu/disas/s390.c:219
#1 0x556714b6fa6a in print_insn_s390 /home/elmarco/src/qemu/disas/s390.c:294
#2 0x55671484d031 in monitor_disas /home/elmarco/src/qemu/disas.c:635
#3 0x556714862ec0 in memory_dump /home/elmarco/src/qemu/monitor.c:1324
#4 0x55671486342a in hmp_memory_dump /home/elmarco/src/qemu/monitor.c:1418
#5 0x5567148670be in handle_hmp_command /home/elmarco/src/qemu/monitor.c:3109
#6 0x5567148674ed in qmp_human_monitor_command /home/elmarco/src/qemu/monitor.c:613
#7 0x556714b00918 in qmp_marshal_human_monitor_command /home/elmarco/src/qemu/build/qmp-marshal.c:1704
#8 0x556715138a3e in do_qmp_dispatch /home/elmarco/src/qemu/qapi/qmp-dispatch.c:104
#9 0x556715138f83 in qmp_dispatch /home/elmarco/src/qemu/qapi/qmp-dispatch.c:131
#10 0x55671485cf88 in handle_qmp_command /home/elmarco/src/qemu/monitor.c:3839
#11 0x55671514e80b in json_message_process_token /home/elmarco/src/qemu/qobject/json-streamer.c:105
#12 0x5567151bf2dc in json_lexer_feed_char /home/elmarco/src/qemu/qobject/json-lexer.c:323
#13 0x5567151bf827 in json_lexer_feed /home/elmarco/src/qemu/qobject/json-lexer.c:373
#14 0x55671514ee62 in json_message_parser_feed /home/elmarco/src/qemu/qobject/json-streamer.c:124
#15 0x556714854b1f in monitor_qmp_read /home/elmarco/src/qemu/monitor.c:3881
#16 0x556715045440 in qemu_chr_be_write_impl /home/elmarco/src/qemu/chardev/char.c:172
#17 0x556715047184 in qemu_chr_be_write /home/elmarco/src/qemu/chardev/char.c:184
#18 0x55671505a8e6 in tcp_chr_read /home/elmarco/src/qemu/chardev/char-socket.c:440
#19 0x5567150943c3 in qio_channel_fd_source_dispatch /home/elmarco/src/qemu/io/channel-watch.c:84
#20 0x7fb90292b90b in g_main_dispatch ../glib/gmain.c:3182
#21 0x7fb90292c7ac in g_main_context_dispatch ../glib/gmain.c:3847
#22 0x556715162eca in glib_pollfds_poll /home/elmarco/src/qemu/util/main-loop.c:214
#23 0x556715163001 in os_host_main_loop_wait /home/elmarco/src/qemu/util/main-loop.c:261
#24 0x5567151631fa in main_loop_wait /home/elmarco/src/qemu/util/main-loop.c:515
#25 0x556714ad6d3b in main_loop /home/elmarco/src/qemu/vl.c:1950
#26 0x556714ade329 in main /home/elmarco/src/qemu/vl.c:4865
#27 0x7fb8fe5c9009 in __libc_start_main (/lib64/libc.so.6+0x21009)
#28 0x5567147af4d9 in _start (/home/elmarco/src/qemu/build/s390x-softmmu/qemu-system-s390x+0xf674d9)
0x556715a1f120 is located 32 bytes to the left of global variable 'char_hci_type_info' defined in '/home/elmarco/src/qemu/hw/bt/hci-csr.c:493:23' (0x556715a1f140) of size 104
0x556715a1f120 is located 8 bytes to the right of global variable 's390_opcodes' defined in '/home/elmarco/src/qemu/disas/s390.c:860:33' (0x556715a15280) of size 40600
This fix is based on Andreas Arnez <arnez@linux.vnet.ibm.com> upstream
commit:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;a=commitdiff;h=9ace48f3d7d80ce09c5df60cccb433470410b11b
2014-08-19 Andreas Arnez <arnez@linux.vnet.ibm.com>
* s390-dis.c (init_disasm): Simplify initialization of
opc_index[]. This also fixes an access after the last element
of s390_opcodes[].
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20180104160523.22995-19-marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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target/xtensa updates:
- add libisa to the xtensa target;
- change xtensa instruction translator to use it;
- switch existing xtensa cores to use it;
- add support for a number of instructions: salt/saltu, const16,
GPIO32 group, debug mode and MMU-related;
- add disassembler for Xtensa.
# gpg: Signature made Tue 09 Jan 2018 18:11:02 GMT
# gpg: using RSA key 0x51F9CC91F83FA044
# gpg: Good signature from "Max Filippov <filippov@cadence.com>"
# gpg: aka "Max Filippov <max.filippov@cogentembedded.com>"
# gpg: aka "Max Filippov <jcmvbkbc@gmail.com>"
# Primary key fingerprint: 2B67 854B 98E5 327D CDEB 17D8 51F9 CC91 F83F A044
* remotes/xtensa/tags/20180109-xtensa:
target/xtensa: implement disassembler
target/xtensa: implement const16
target/xtensa: implement GPIO32
target/xtensa: implement salt/saltu
target/xtensa: add internal/noop SRs and opcodes
target/xtensa: drop DisasContext::litbase
target/xtensa: tests: fix memctl SR test
target/xtensa: use libisa for instruction decoding
target/xtensa: switch fsf to libisa
target/xtensa: switch dc233c to libisa
target/xtensa: switch dc232b to libisa
target/xtensa: update import_core.sh script for libisa
target/xtensa: extract FPU2000 opcode translators
target/xtensa: extract core opcode translators
target/xtensa: import libisa source
target/xtensa: pass actual frame size to the entry helper
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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Add disas/xtensa.c and use libisa for instruction decoding/opcode name
lookup.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
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