Disassembler is not expected to alter the CPU config.
Besides, all other RISC-V methods takes a const RISCVCPUConfig.
Make the @cfg field of the rv_decode structure const, passing
a const pointer to disasm_inst().
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-ID: <20260202222412.24923-6-philmd@linaro.org>
This reflects the latest frozen version of the RISC-V Debug
specification (1.0.0-rc4) which includes the Sdtrig extension.
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Message-ID: <20250206153410.236636-3-rbradford@rivosinc.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Some extra spaces made into into the RISC-V opcode data table.
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-ID: <20250206153410.236636-2-rbradford@rivosinc.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
For riscv host, it will set dec->cfg to zero. Thus we shuld guard
the dec->cfg deference for riscv host disassemble.
And in general, we should only use dec->cfg for target in three cases:
1) For not incompatible encodings, such as zcmp/zcmt/zfinx.
2) For maybe-ops encodings, they are better to be disassembled to
the "real" extensions, such as zicfiss. The guard of dec->zimop
and dec->zcmop is for comment and avoid check for every extension
that encoded in maybe-ops area.
3) For custom encodings, we have to use dec->cfg to disassemble
custom encodings using the same encoding area.
Signed-off-by: LIU Zhiwei <zhiwei_liu@linux.alibaba.com>
Suggested-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-ID: <20241206032411.52528-1-zhiwei_liu@linux.alibaba.com>
sspush and sspopchk have equivalent compressed encoding taken from zcmop.
cmop.1 is sspush x1 while cmop.5 is sspopchk x5. Due to unusual encoding
for both rs1 and rs2 from space bitfield, this required a new codec.
Signed-off-by: Deepak Gupta <debug@rivosinc.com>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Message-ID: <20241008225010.1861630-20-debug@rivosinc.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Enable disassembly for sspush, sspopchk, ssrdp & ssamoswap.
Disasembly is only enabled if zimop and zicfiss ext is set to true.
Signed-off-by: Deepak Gupta <debug@rivosinc.com>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Message-ID: <20241008225010.1861630-19-debug@rivosinc.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Deepak Gupta <debug@rivosinc.com>
Co-developed-by: Jim Shu <jim.shu@sifive.com>
Co-developed-by: Andy Chiu <andy.chiu@sifive.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-ID: <20241008225010.1861630-9-debug@rivosinc.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
The first immediate field is unsigned, whereas operand_vimm
extracts a signed value. There is no need to mask the result
with 'u'; just print the immediate with 'i'.
Fixes: 07f4964d17 ("disas/riscv.c: rvv: Add disas support for vector instructions")
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Reviewed-by: LIU Zhiwei <zhiwei_liu@linux.alibaba.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Add disassembly support for these instructions from Zawrs:
* wrs.sto
* wrs.nto
Signed-off-by: Balaji Ravikumar <bravikumar@rivosinc.com>
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Message-ID: <20240705165316.127494-1-rbradford@rivosinc.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: LIU Zhiwei <zhiwei_liu@linux.alibaba.com>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Message-ID: <20240709113652.1239-12-zhiwei_liu@linux.alibaba.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Although in QEMU disassemble, we usually lift compressed instruction
to an normal format when display the instruction name. For C.MOP.n,
it is more reasonable to directly display its compressed name, because
its behavior can be redefined by later extension.
Signed-off-by: LIU Zhiwei <zhiwei_liu@linux.alibaba.com>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Deepak Gupta <debug@rivosinc.com>
Message-ID: <20240709113652.1239-5-zhiwei_liu@linux.alibaba.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Allocate and fill a GString instead of snprintf and
appending to a fixed sized buffer.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Message-Id: <20240412073346.458116-22-richard.henderson@linaro.org>
Previously we only listed a single pmpcfg CSR and the first 16 pmpaddr
CSRs. This patch fixes this to list all 16 pmpcfg and all 64 pmpaddr
CSRs are part of the disassembly.
Reported-by: Eric DeVolder <eric_devolder@yahoo.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Fixes: ea10325917 ("RISC-V Disassembler")
Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Cc: qemu-stable <qemu-stable@nongnu.org>
Message-ID: <20240514051615.330979-1-alistair.francis@wdc.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
This makes the output suitable when used for plugins.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20240305121005.3528075-30-alex.bennee@linaro.org>
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Message-ID: <20231207153842.32401-3-rbradford@rivosinc.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Replaces TABs with spaces, making sure to have a consistent coding style
of 4 space indentations.
Signed-off-by: Max Chou <max.chou@sifive.com>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Message-ID: <20231026151828.754279-15-max.chou@sifive.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Add rv_codec_vror_vi for the vector crypto instruction - vror.vi.
The rotate amount of vror.vi is defined by combining seperated bits.
Signed-off-by: Max Chou <max.chou@sifive.com>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Message-ID: <20231026151828.754279-13-max.chou@sifive.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Fix the inverted order of pmpaddr13 and pmpaddr14 in csr_name().
Signed-off-by: Alvin Chang <alvinga@andestech.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-ID: <20230907084500.328-1-alvinga@andestech.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
The GNU assembler produces the following output for instructions
with upper immediates:
00002597 auipc a1,0x2
000024b7 lui s1,0x2
6409 lui s0,0x2 # c.lui
The immediate operands of upper immediates are not shifted.
However, the QEMU disassembler prints them shifted:
00002597 auipc a1,8192
000024b7 lui s1,8192
6409 lui s0,8192 # c.lui
The current implementation extracts the immediate bits and shifts the by 12,
so the internal representation of the immediate is the actual immediate.
However, the immediates are later printed using rv_fmt_rd_imm or
rv_fmt_rd_offset, which don't undo the shift.
Let's fix this by using specific output formats for instructions
with upper immediates, that take care of the shift.
Signed-off-by: Christoph Müllner <christoph.muellner@vrull.eu>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20230711075051.1531007-1-christoph.muellner@vrull.eu>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
This patch introduces the RISC-V Zfa extension, which introduces
additional floating-point instructions:
* fli (load-immediate) with pre-defined immediates
* fminm/fmaxm (like fmin/fmax but with different NaN behaviour)
* fround/froundmx (round to integer)
* fcvtmod.w.d (Modular Convert-to-Integer)
* fmv* to access high bits of float register bigger than XLEN
* Quiet comparison instructions (fleq/fltq)
Zfa defines its instructions in combination with the following extensions:
* single-precision floating-point (F)
* double-precision floating-point (D)
* quad-precision floating-point (Q)
* half-precision floating-point (Zfh)
Since QEMU does not support the RISC-V quad-precision floating-point
ISA extension (Q), this patch does not include the instructions that
depend on this extension. All other instructions are included in this
patch.
The Zfa specification can be found here:
https://github.com/riscv/riscv-isa-manual/blob/master/src/zfa.tex
The Zfa specifciation is frozen and is in public review since May 3, 2023:
https://groups.google.com/a/groups.riscv.org/g/isa-dev/c/SED4ntBkabg
The patch also includes a TCG test for the fcvtmod.w.d instruction.
The test cases test for correct results and flag behaviour.
Note, that the Zfa specification requires fcvtmod's flag behaviour
to be identical to a fcvt with the same operands (which is also
tested).
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Christoph Müllner <christoph.muellner@vrull.eu>
Message-Id: <20230710071243.282464-1-christoph.muellner@vrull.eu>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Weiwei Li <liweiwei@iscas.ac.cn>
Signed-off-by: Junqiang Wang <wangjunqiang@iscas.ac.cn>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20230703071759.86775-2-liweiwei@iscas.ac.cn>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Support for emulating XThead* instruction has been added recently.
This patch adds support for these instructions to the RISC-V disassembler.
Co-developed-by: LIU Zhiwei <zhiwei_liu@linux.alibaba.com>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Christoph Müllner <christoph.muellner@vrull.eu>
Message-Id: <20230612111034.3955227-9-christoph.muellner@vrull.eu>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
This patch adds XVentanaCondOps support to the RISC-V disassembler.
Co-developed-by: LIU Zhiwei <zhiwei_liu@linux.alibaba.com>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Christoph Müllner <christoph.muellner@vrull.eu>
Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Message-Id: <20230612111034.3955227-8-christoph.muellner@vrull.eu>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
A previous patch provides a pointer to the RISCVCPUConfig data.
Let's use this to add the necessary code for vendor extensions.
This patch does not change the current behaviour, but clearly
defines how vendor extension support can be added to the disassembler.
Reviewed-by: LIU Zhiwei <zhiwei_liu@linux.alibaba.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Christoph Müllner <christoph.muellner@vrull.eu>
Message-Id: <20230612111034.3955227-7-christoph.muellner@vrull.eu>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
This patch adds a reference to a struct rv_opcode_data object
into struct rv_decode. This further allows to remove all references
to the global variable opcode_data (which is renamed to rvi_opcode_data).
This patch does not introduce any functional change, but prepares
the code for more struct rv_opcode_data objects in the future.
This patch is based on previous work from Liu Zhiwei:
https://lists.nongnu.org/archive/html/qemu-devel/2022-08/msg03662.html
Co-developed-by: LIU Zhiwei <zhiwei_liu@linux.alibaba.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Christoph Müllner <christoph.muellner@vrull.eu>
Message-Id: <20230612111034.3955227-6-christoph.muellner@vrull.eu>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
The enum value 'rv_op_illegal' does not represent an
instruction, but is a catch-all value in case we have
no match in the decoder. Let's make the value a shared
one, so that other compile units can reuse it.
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: LIU Zhiwei <zhiwei_liu@linux.alibaba.com>
Signed-off-by: Christoph Müllner <christoph.muellner@vrull.eu>
Message-Id: <20230612111034.3955227-5-christoph.muellner@vrull.eu>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
In order to enable vendor disassembler support, we need to
move types and constants into a header file so that other
compilation units can use them as well.
This patch does not introduce any functional changes.
Reviewed-by: LIU Zhiwei <zhiwei_liu@linux.alibaba.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Christoph Müllner <christoph.muellner@vrull.eu>
Message-Id: <20230612111034.3955227-4-christoph.muellner@vrull.eu>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Remove redundant parenthese and fix multi-line comments.
Signed-off-by: Weiwei Li <liweiwei@iscas.ac.cn>
Signed-off-by: Junqiang Wang <wangjunqiang@iscas.ac.cn>
Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20230523093539.203909-9-liweiwei@iscas.ac.cn>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Fix lines with over 80 characters.
Signed-off-by: Weiwei Li <liweiwei@iscas.ac.cn>
Signed-off-by: Junqiang Wang <wangjunqiang@iscas.ac.cn>
Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20230523093539.203909-8-liweiwei@iscas.ac.cn>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Currently decomp_rv32 and decomp_rv64 value in opcode_data for vector
instructions are the same op index as their own. And they have no
functional decomp_data. So they have no functional difference from just
leaving them as zero.
Signed-off-by: Weiwei Li <liweiwei@iscas.ac.cn>
Signed-off-by: Junqiang Wang <wangjunqiang@iscas.ac.cn>
Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20230523093539.203909-7-liweiwei@iscas.ac.cn>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Support disas for Z*inx instructions only when Zfinx extension is supported.
Signed-off-by: Weiwei Li <liweiwei@iscas.ac.cn>
Signed-off-by: Junqiang Wang <wangjunqiang@iscas.ac.cn>
Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20230523093539.203909-6-liweiwei@iscas.ac.cn>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Support disas for Zcmt* instructions only when related extensions
are supported.
Signed-off-by: Weiwei Li <liweiwei@iscas.ac.cn>
Signed-off-by: Junqiang Wang <wangjunqiang@iscas.ac.cn>
Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20230523093539.203909-5-liweiwei@iscas.ac.cn>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Pass RISCVCPUConfig as disassemble_info.target_info to support disas
of conflict instructions related to specific extensions.
Signed-off-by: Weiwei Li <liweiwei@iscas.ac.cn>
Signed-off-by: Junqiang Wang <wangjunqiang@iscas.ac.cn>
Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20230523093539.203909-4-liweiwei@iscas.ac.cn>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Zcmp/Zcmt instructions will override disasm for c.fld*/c.fsd*
instructions currently.
Signed-off-by: Weiwei Li <liweiwei@iscas.ac.cn>
Signed-off-by: Junqiang Wang <wangjunqiang@iscas.ac.cn>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20230307081403.61950-10-liweiwei@iscas.ac.cn>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Fix incorrect register name in RISC-V disassembler for fmv,fabs,fneg instructions
Signed-off-by: Mikhail Tyutin <m.tyutin@yadro.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <3454991f-7f64-24c3-9a36-f5fa2cc389e1@yadro.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
The decoding of the slli_uw currently contains decoding
error: shamt part of opcode has six bits, not five.
Fixes 3de1fb71("target/riscv: update disas.c for xnor/orn/andn and slli.uw")
Signed-off-by: Ivan Klokov <ivan.klokov@syntacore.com>
Reviewed-by: Philipp Tomsich <philipp.tomsich@vrull.eu>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20230227090228.17117-1-ivan.klokov@syntacore.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Due to typo in opcode list, ctzw is disassembled as clzw instruction.
Signed-off-by: Ivan Klokov <ivan.klokov@syntacore.com>
Fixes: 02c1b569a1 ("disas/riscv: Add Zb[abcs] instructions")
Reviewed-by: Weiwei Li <liweiwei@iscas.ac.cn>
Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Message-ID: <20230217151459.54649-1-ivan.klokov@syntacore.com>
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
The decoding of the following instructions from Zb[abcs] currently
contains decoding/printing errors:
* xnor,orn,andn: the rs2 operand is not being printed
* slli.uw: decodes and prints the immediate shift-amount as a
register (e.g. 'shift-by-2' becomes 'sp') instead of
interpreting this as an immediate
This commit updates the instruction descriptions to use the
appropriate decoding/printing formats.
Signed-off-by: Philipp Tomsich <philipp.tomsich@vrull.eu>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20230120151551.1022761-1-philipp.tomsich@vrull.eu>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Tested with https://github.com/ksco/rvv-decoder-tests
Expected checkpatch errors for consistency and brevity reasons:
ERROR: line over 90 characters
ERROR: trailing statements should be on next line
ERROR: braces {} are necessary for all arms of this statement
Signed-off-by: Yang Liu <liuyang22@iscas.ac.cn>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20220928051842.16207-1-liuyang22@iscas.ac.cn>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
sideleg and sedeleg csrs are not part of riscv isa spec
anymore, these csrs were part of N extension which
is removed from the riscv isa specification.
These commits removed all traces of these csrs from
riscv spec (https://github.com/riscv/riscv-isa-manual) -
commit f8d27f805b65 ("Remove or downgrade more references to N extension (#674)")
commit b6cade07034d ("Remove N extension chapter for now")
Signed-off-by: Rahul Pathak <rpathak@ventanamicro.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20220824145255.400040-1-rpathak@ventanamicro.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
For rv128c shifts, a shamt of 0 is a shamt of 64, while for rv32c/rv64c
it stays 0 and is a hint instruction that does not change processor state.
For rv128c right shifts, the 6-bit shamt is in addition sign extended to
7 bits.
Signed-off-by: Frédéric Pétrot <frederic.petrot@univ-grenoble-alpes.fr>
Reviewed-by: Weiwei Li <liweiwei@iscas.ac.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220710110451.245567-1-frederic.petrot@univ-grenoble-alpes.fr>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Co-authored-by: Ruibo Lu <luruibo2000@163.com>
Co-authored-by: Zewen Ye <lustrew@foxmail.com>
Signed-off-by: Weiwei Li <liweiwei@iscas.ac.cn>
Signed-off-by: Junqiang Wang <wangjunqiang@iscas.ac.cn>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20220423023510.30794-14-liweiwei@iscas.ac.cn>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
This patch adds the support of the '-cpu rv128' option to
qemu-system-riscv64 so that we can indicate that we want to run rv128
executables.
Still, there is no support for 128-bit insns at that stage so qemu fails
miserably (as expected) if launched with this option.
Signed-off-by: Frédéric Pétrot <frederic.petrot@univ-grenoble-alpes.fr>
Co-authored-by: Fabien Portas <fabien.portas@grenoble-inp.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20220106210108.138226-8-frederic.petrot@univ-grenoble-alpes.fr
[ Changed by AF
- Rename CPU to "x-rv128"
]
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
With the addition of Zb[abcs], we also need to add disassembler
support for these new instructions.
Signed-off-by: Philipp Tomsich <philipp.tomsich@vrull.eu>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20210911140016.834071-17-philipp.tomsich@vrull.eu
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
The constraint for `rdinstreth` was comparing the csr number to 0xc80,
which is `cycleh` instead. Fix this.
Signed-off-by: Wladimir J. van der Laan <laanwj@gmail.com>
Signed-off-by: Michael Clark <mjc@sifive.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Palmer Dabbelt <palmer@sifive.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
Due to the design of the disassembler, the immediate is not
known during decoding of the opcode; so to handle compressed
encodings with reserved immediate values (non-zero), we need
to add an additional check during decompression to match
reserved encodings with zero immediates and translate them
into the illegal instruction.
The following compressed opcodes have reserved encodings with
zero immediates: c.addi4spn, c.addi, c.lui, c.addi16sp, c.srli,
c.srai, c.andi and c.slli
Signed-off-by: Michael Clark <mjc@sifive.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
[Palmer: Broke long lines]
Reviewed-by: Palmer Dabbelt <palmer@sifive.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
Commit dc99065b5f (v0.1.0) added dis-asm.h from binutils.
Commit 43d4145a98 (v0.1.5) inlined bfd.h into dis-asm.h to remove the
dependency on binutils.
Commit 76cad71136 (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>
Philippe Mathieu-Daudé
Rob Bradford
LIU Zhiwei
Deepak Gupta
Richard Henderson
Balaji Ravikumar
Alistair Francis
Alex Bennée
Max Chou
Alvin Chang
Christoph Müllner
Weiwei Li
Mikhail Tyutin
Ivan Klokov
Philipp Tomsich
Yang Liu
Rahul Pathak
Frédéric Pétrot
Wladimir J. van der Laan
Michael Clark
Markus Armbruster