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2022-01-21target/riscv: rvv-1.0: Add Zve64f support for configuration insnsFrank Chang
All Zve* extensions support the vector configuration instructions. Signed-off-by: Frank Chang <frank.chang@sifive.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Message-id: 20220118014522.13613-3-frank.chang@sifive.com Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2022-01-21target/riscv: rvv-1.0: Add Zve64f extension into RISC-VFrank Chang
Signed-off-by: Frank Chang <frank.chang@sifive.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Message-id: 20220118014522.13613-2-frank.chang@sifive.com Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2022-01-21target/riscv: Support virtual time context synchronizationYifei Jiang
Add virtual time context description to vmstate_kvmtimer. After cpu being loaded, virtual time context is updated to KVM. Signed-off-by: Yifei Jiang <jiangyifei@huawei.com> Signed-off-by: Mingwang Li <limingwang@huawei.com> Reviewed-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Message-id: 20220112081329.1835-13-jiangyifei@huawei.com Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2022-01-21target/riscv: Implement virtual time adjusting with vm state changingYifei Jiang
We hope that virtual time adjusts with vm state changing. When a vm is stopped, guest virtual time should stop counting and kvm_timer should be stopped. When the vm is resumed, guest virtual time should continue to count and kvm_timer should be restored. Signed-off-by: Yifei Jiang <jiangyifei@huawei.com> Signed-off-by: Mingwang Li <limingwang@huawei.com> Reviewed-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Message-id: 20220112081329.1835-12-jiangyifei@huawei.com Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2022-01-21target/riscv: Add kvm_riscv_get/put_regs_timerYifei Jiang
Add kvm_riscv_get/put_regs_timer to synchronize virtual time context from KVM. To set register of RISCV_TIMER_REG(state) will occur a error from KVM on kvm_timer_state == 0. It's better to adapt in KVM, but it doesn't matter that adaping in QEMU. Signed-off-by: Yifei Jiang <jiangyifei@huawei.com> Signed-off-by: Mingwang Li <limingwang@huawei.com> Reviewed-by: Anup Patel <anup.patel@wdc.com> Acked-by: Alistair Francis <alistair.francis@wdc.com> Message-id: 20220112081329.1835-11-jiangyifei@huawei.com Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2022-01-21target/riscv: Add host cpu typeYifei Jiang
'host' type cpu is set isa to RV32 or RV64 simply, more isa info will obtain from KVM in kvm_arch_init_vcpu() Signed-off-by: Yifei Jiang <jiangyifei@huawei.com> Signed-off-by: Mingwang Li <limingwang@huawei.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: Anup Patel <anup.patel@wdc.com> Message-id: 20220112081329.1835-10-jiangyifei@huawei.com Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2022-01-21target/riscv: Handle KVM_EXIT_RISCV_SBI exitYifei Jiang
Use char-fe to handle console sbi call, which implement early console io while apply 'earlycon=sbi' into kernel parameters. Signed-off-by: Yifei Jiang <jiangyifei@huawei.com> Signed-off-by: Mingwang Li <limingwang@huawei.com> Reviewed-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Message-id: 20220112081329.1835-9-jiangyifei@huawei.com Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2022-01-21target/riscv: Support setting external interrupt by KVMYifei Jiang
When KVM is enabled, set the S-mode external interrupt through kvm_riscv_set_irq function. Signed-off-by: Yifei Jiang <jiangyifei@huawei.com> Signed-off-by: Mingwang Li <limingwang@huawei.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: Anup Patel <anup.patel@wdc.com> Message-id: 20220112081329.1835-8-jiangyifei@huawei.com Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2022-01-21target/riscv: Support start kernel directly by KVMYifei Jiang
Get kernel and fdt start address in virt.c, and pass them to KVM when cpu reset. Add kvm_riscv.h to place riscv specific interface. In addition, PLIC is created without M-mode PLIC contexts when KVM is enabled. Signed-off-by: Yifei Jiang <jiangyifei@huawei.com> Signed-off-by: Mingwang Li <limingwang@huawei.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: Anup Patel <anup@brainfault.org> Message-id: 20220112081329.1835-7-jiangyifei@huawei.com Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2022-01-21target/riscv: Implement kvm_arch_put_registersYifei Jiang
Put GPR CSR and FP registers to kvm by KVM_SET_ONE_REG ioctl Signed-off-by: Yifei Jiang <jiangyifei@huawei.com> Signed-off-by: Mingwang Li <limingwang@huawei.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: Anup Patel <anup.patel@wdc.com> Message-id: 20220112081329.1835-6-jiangyifei@huawei.com Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2022-01-21target/riscv: Implement kvm_arch_get_registersYifei Jiang
Get GPR CSR and FP registers from kvm by KVM_GET_ONE_REG ioctl. Signed-off-by: Yifei Jiang <jiangyifei@huawei.com> Signed-off-by: Mingwang Li <limingwang@huawei.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: Anup Patel <anup.patel@wdc.com> Message-id: 20220112081329.1835-5-jiangyifei@huawei.com Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2022-01-21target/riscv: Implement function kvm_arch_init_vcpuYifei Jiang
Get isa info from kvm while kvm init. Signed-off-by: Yifei Jiang <jiangyifei@huawei.com> Signed-off-by: Mingwang Li <limingwang@huawei.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: Anup Patel <anup.patel@wdc.com> Message-id: 20220112081329.1835-4-jiangyifei@huawei.com Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2022-01-21target/riscv: Add target/riscv/kvm.c to place the public kvm interfaceYifei Jiang
Add target/riscv/kvm.c to place kvm_arch_* function needed by kvm/kvm-all.c. Signed-off-by: Yifei Jiang <jiangyifei@huawei.com> Signed-off-by: Mingwang Li <limingwang@huawei.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: Anup Patel <anup.patel@wdc.com> Message-id: 20220112081329.1835-3-jiangyifei@huawei.com Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2022-01-08target/riscv: Implement the stval/mtval illegal instructionAlistair Francis
The stval and mtval registers can optionally contain the faulting instruction on an illegal instruction exception. This patch adds support for setting the stval and mtval registers. The RISC-V spec states that "The stval register can optionally also be used to return the faulting instruction bits on an illegal instruction exception...". In this case we are always writing the value on an illegal instruction. This doesn't match all CPUs (some CPUs won't write the data), but in QEMU let's just populate the value on illegal instructions. This won't break any guest software, but will provide more information to guests. Signed-off-by: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Message-id: 20211220064916.107241-4-alistair.francis@opensource.wdc.com
2022-01-08target/riscv: Fixup setting GVAAlistair Francis
In preparation for adding support for the illegal instruction address let's fixup the Hypervisor extension setting GVA logic and improve the variable names. Signed-off-by: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Message-id: 20211220064916.107241-3-alistair.francis@opensource.wdc.com
2022-01-08target/riscv: Set the opcode in DisasContextAlistair Francis
Signed-off-by: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Message-id: 20211220064916.107241-2-alistair.francis@opensource.wdc.com
2022-01-08target/riscv: actual functions to realize crs 128-bit insnsFrédéric Pétrot
The csrs are accessed through function pointers: we add 128-bit read operations in the table for three csrs (writes fallback to the 64-bit version as the upper 64-bit information is handled elsewhere): - misa, as mxl is needed for proper operation, - mstatus and sstatus, to return sd In addition, we also add read and write accesses to the machine and supervisor scratch registers. 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: 20220106210108.138226-19-frederic.petrot@univ-grenoble-alpes.fr Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2022-01-08target/riscv: modification of the trans_csrxx for 128-bit supportFrédéric Pétrot
As opposed to the gen_arith and gen_shift generation helpers, the csr insns do not have a common prototype, so the choice to generate 32/64 or 128-bit helper calls is done in the trans_csrxx functions. Signed-off-by: Frédéric Pétrot <frederic.petrot@univ-grenoble-alpes.fr> Co-authored-by: Fabien Portas <fabien.portas@grenoble-inp.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Message-id: 20220106210108.138226-18-frederic.petrot@univ-grenoble-alpes.fr Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2022-01-08target/riscv: helper functions to wrap calls to 128-bit csr insnsFrédéric Pétrot
Given the side effects they have, the csr instructions are realized as helpers. We extend this existing infrastructure for 128-bit sized csr. We return 128-bit values using the same approach as for div/rem. Theses helpers all call a unique function that is currently a fallback on the 64-bit version. The trans_csrxx functions supporting 128-bit are yet to be implemented. Signed-off-by: Frédéric Pétrot <frederic.petrot@univ-grenoble-alpes.fr> Co-authored-by: Fabien Portas <fabien.portas@grenoble-inp.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Message-id: 20220106210108.138226-17-frederic.petrot@univ-grenoble-alpes.fr Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2022-01-08target/riscv: adding high part of some csrsFrédéric Pétrot
Adding the high part of a very minimal set of csr. Signed-off-by: Frédéric Pétrot <frederic.petrot@univ-grenoble-alpes.fr> Co-authored-by: Fabien Portas <fabien.portas@grenoble-inp.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Message-id: 20220106210108.138226-16-frederic.petrot@univ-grenoble-alpes.fr Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2022-01-08target/riscv: support for 128-bit M extensionFrédéric Pétrot
Mult are generated inline (using a cool trick pointed out by Richard), but for div and rem, given the complexity of the implementation of these instructions, we call helpers to produce their behavior. From an implementation standpoint, the helpers return the low part of the results, while the high part is temporarily stored in a dedicated field of cpu_env that is used to update the architectural register in the generation wrapper. Signed-off-by: Frédéric Pétrot <frederic.petrot@univ-grenoble-alpes.fr> Co-authored-by: Fabien Portas <fabien.portas@grenoble-inp.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Message-id: 20220106210108.138226-15-frederic.petrot@univ-grenoble-alpes.fr Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2022-01-08target/riscv: support for 128-bit arithmetic instructionsFrédéric Pétrot
Addition of 128-bit adds and subs in their various sizes, "set if less than"s and branches. Refactored the code to have a comparison function used for both stls and branches. 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: 20220106210108.138226-14-frederic.petrot@univ-grenoble-alpes.fr Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2022-01-08target/riscv: support for 128-bit shift instructionsFrédéric Pétrot
Handling shifts for 32, 64 and 128 operation length for RV128, following the general framework for handling various olens proposed by Richard. 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: 20220106210108.138226-13-frederic.petrot@univ-grenoble-alpes.fr Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2022-01-08target/riscv: support for 128-bit U-type instructionsFrédéric Pétrot
Adding the 128-bit version of lui and auipc, and introducing to that end a "set register with immediat" function to handle extension on 128 bits. Signed-off-by: Frédéric Pétrot <frederic.petrot@univ-grenoble-alpes.fr> Co-authored-by: Fabien Portas <fabien.portas@grenoble-inp.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Message-id: 20220106210108.138226-12-frederic.petrot@univ-grenoble-alpes.fr Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2022-01-08target/riscv: support for 128-bit bitwise instructionsFrédéric Pétrot
The 128-bit bitwise instructions do not need any function prototype change as the functions can be applied independently on the lower and upper part of the registers. Signed-off-by: Frédéric Pétrot <frederic.petrot@univ-grenoble-alpes.fr> Co-authored-by: Fabien Portas <fabien.portas@grenoble-inp.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Message-id: 20220106210108.138226-11-frederic.petrot@univ-grenoble-alpes.fr Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2022-01-08target/riscv: accessors to registers upper part and 128-bit load/storeFrédéric Pétrot
Get function to retrieve the 64 top bits of a register, stored in the gprh field of the cpu state. Set function that writes the 128-bit value at once. The access to the gprh field can not be protected at compile time to make sure it is accessed only in the 128-bit version of the processor because we have no way to indicate that the misa_mxl_max field is const. The 128-bit ISA adds ldu, lq and sq. We provide support for these instructions. Note that (a) we compute only 64-bit addresses to actually access memory, cowardly utilizing the existing address translation mechanism of QEMU, and (b) we assume for now little-endian memory accesses. 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: 20220106210108.138226-10-frederic.petrot@univ-grenoble-alpes.fr Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2022-01-08target/riscv: moving some insns close to similar insnsFrédéric Pétrot
lwu and ld are functionally close to the other loads, but were after the stores in the source file. Similarly, xor was away from or and and by two arithmetic functions, while the immediate versions were nicely put together. This patch moves the aforementioned loads after lhu, and xor above or, where they more logically belong. Signed-off-by: Frédéric Pétrot <frederic.petrot@univ-grenoble-alpes.fr> Co-authored-by: Fabien Portas <fabien.portas@grenoble-inp.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Message-id: 20220106210108.138226-9-frederic.petrot@univ-grenoble-alpes.fr Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2022-01-08target/riscv: setup everything for rv64 to support rv128 executionFrédéric Pétrot
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>
2022-01-08target/riscv: array for the 64 upper bits of 128-bit registersFrédéric Pétrot
The upper 64-bit of the 128-bit registers have now a place inside the cpu state structure, and are created as globals for future use. 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: 20220106210108.138226-7-frederic.petrot@univ-grenoble-alpes.fr Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2022-01-08target/riscv: separation of bitwise logic and arithmetic helpersFrédéric Pétrot
Introduction of a gen_logic function for bitwise logic to implement instructions in which no propagation of information occurs between bits and use of this function on the bitwise instructions. Signed-off-by: Frédéric Pétrot <frederic.petrot@univ-grenoble-alpes.fr> Co-authored-by: Fabien Portas <fabien.portas@grenoble-inp.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Message-id: 20220106210108.138226-6-frederic.petrot@univ-grenoble-alpes.fr Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2022-01-08target/riscv: additional macros to check instruction supportFrédéric Pétrot
Given that the 128-bit version of the riscv spec adds new instructions, and that some instructions that were previously only available in 64-bit mode are now available for both 64-bit and 128-bit, we added new macros to check for the processor mode during translation. Although RV128 is a superset of RV64, we keep for now the RV64 only tests for extensions other than RVI and RVM. Signed-off-by: Frédéric Pétrot <frederic.petrot@univ-grenoble-alpes.fr> Co-authored-by: Fabien Portas <fabien.portas@grenoble-inp.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Message-id: 20220106210108.138226-5-frederic.petrot@univ-grenoble-alpes.fr Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2022-01-08exec/memop: Adding signedness to quad definitionsFrédéric Pétrot
Renaming defines for quad in their various forms so that their signedness is now explicit. Done using git grep as suggested by Philippe, with a bit of hand edition to keep assignments aligned. Signed-off-by: Frédéric Pétrot <frederic.petrot@univ-grenoble-alpes.fr> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Message-id: 20220106210108.138226-2-frederic.petrot@univ-grenoble-alpes.fr Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2022-01-08target/riscv: Fix position of 'experimental' commentPhilipp Tomsich
When commit 0643c12e4b dropped the 'x-' prefix for Zb[abcs] and set them to be enabled by default, the comment about experimental extensions was kept in place above them. This moves it down a few lines to only cover experimental extensions. References: 0643c12e4b ("target/riscv: Enable bitmanip Zb[abcs] instructions") Signed-off-by: Philipp Tomsich <philipp.tomsich@vrull.eu> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Message-id: 20220106134020.1628889-1-philipp.tomsich@vrull.eu Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2022-01-08target/riscv: rvv-1.0: Call the correct RVF/RVD check function for narrowing ↵Frank Chang
fp/int type-convert insns vfncvt.f.xu.w, vfncvt.f.x.w convert double-width integer to single-width floating-point. Therefore, should use require_rvf() to check whether RVF/RVD is enabled. vfncvt.f.f.w, vfncvt.rod.f.f.w convert double-width floating-point to single-width integer. Therefore, should use require_scale_rvf() to check whether RVF/RVD is enabled. Signed-off-by: Frank Chang <frank.chang@sifive.com> Acked-by: Alistair Francis <alistair.francis@wdc.com> Message-Id: <20220105022247.21131-4-frank.chang@sifive.com> Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2022-01-08target/riscv: rvv-1.0: Call the correct RVF/RVD check function for widening ↵Frank Chang
fp/int type-convert insns vfwcvt.xu.f.v, vfwcvt.x.f.v, vfwcvt.rtz.xu.f.v and vfwcvt.rtz.x.f.v convert single-width floating-point to double-width integer. Therefore, should use require_rvf() to check whether RVF/RVD is enabled. vfwcvt.f.xu.v, vfwcvt.f.x.v convert single-width integer to double-width floating-point, and vfwcvt.f.f.v convert double-width floating-point to single-width floating-point. Therefore, should use require_scale_rvf() to check whether RVF/RVD is enabled. Signed-off-by: Frank Chang <frank.chang@sifive.com> Acked-by: Alistair Francis <alistair.francis@wdc.com> Message-Id: <20220105022247.21131-3-frank.chang@sifive.com> Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2022-01-08target/riscv: rvv-1.0: Call the correct RVF/RVD check function for widening ↵Frank Chang
fp insns Vector widening floating-point instructions should use require_scale_rvf() instead of require_rvf() to check whether RVF/RVD is enabled. Signed-off-by: Frank Chang <frank.chang@sifive.com> Acked-by: Alistair Francis <alistair.francis@wdc.com> Message-Id: <20220105022247.21131-2-frank.chang@sifive.com> Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2022-01-08target/riscv: Enable the Hypervisor extension by defaultAlistair Francis
Let's enable the Hypervisor extension by default. This doesn't affect named CPUs (such as lowrisc-ibex or sifive-u54) but does enable the Hypervisor extensions by default for the virt machine. Signed-off-by: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Message-Id: <20220105213937.1113508-7-alistair.francis@opensource.wdc.com>
2022-01-08target/riscv: Mark the Hypervisor extension as non experimentalAlistair Francis
The Hypervisor spec is now frozen, so remove the experimental tag. Signed-off-by: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Message-Id: <20220105213937.1113508-6-alistair.francis@opensource.wdc.com>
2022-01-08target/riscv/pmp: fix no pmp illegal intrsNikita Shubin
As per the privilege specification, any access from S/U mode should fail if no pmp region is configured and pmp is present, othwerwise access should succeed. Fixes: d102f19a208 (target/riscv/pmp: Raise exception if no PMP entry is configured) Signed-off-by: Nikita Shubin <n.shubin@yadro.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Message-id: 20211214092659.15709-1-nikita.shubin@maquefel.me Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2021-12-20target/riscv: Enable bitmanip Zb[abcs] instructionsVineet Gupta
The bitmanip extension has now been ratified [1] and upstream tooling (gcc/binutils) support it too, so move them out of experimental and also enable by default (for better test exposure/coverage) [1] https://wiki.riscv.org/display/TECH/Recently+Ratified+Extensions Signed-off-by: Vineet Gupta <vineetg@rivosinc.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Message-Id: <20211216051844.3921088-1-vineetg@rivosinc.com> Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2021-12-20target/riscv: rvv-1.0: Add ELEN checks for widening and narrowing instructionsFrank Chang
SEW has the limitation which cannot exceed ELEN. Widening instructions have a destination group with EEW = 2*SEW and narrowing instructions have a source operand with EEW = 2*SEW. Both of the instructions have the limitation of: 2*SEW <= ELEN. Signed-off-by: Frank Chang <frank.chang@sifive.com> Acked-by: Alistair Francis <alistair.francis@wdc.com> Message-Id: <20211210075704.23951-78-frank.chang@sifive.com> Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2021-12-20target/riscv: rvv-1.0: update opivv_vadc_check() commentFrank Chang
Vector Integer Add-with-Carry / Subtract-with-Borrow Instructions is moved to Section 11.4 in RVV v1.0 spec. Update the comment, no functional changes. Signed-off-by: Frank Chang <frank.chang@sifive.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Message-Id: <20211210075704.23951-77-frank.chang@sifive.com> Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2021-12-20target/riscv: rvv-1.0: rename vmandnot.mm and vmornot.mm to vmandn.mm and ↵Frank Chang
vmorn.mm Signed-off-by: Frank Chang <frank.chang@sifive.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Message-Id: <20211210075704.23951-76-frank.chang@sifive.com> Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2021-12-20target/riscv: rvv-1.0: add vector unit-stride mask load/store insnsFrank Chang
Signed-off-by: Frank Chang <frank.chang@sifive.com> Acked-by: Alistair Francis <alistair.francis@wdc.com> Message-Id: <20211210075704.23951-75-frank.chang@sifive.com> Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2021-12-20target/riscv: rvv-1.0: add evl parameter to vext_ldst_us()Frank Chang
Add supports of Vector unit-stride mask load/store instructions (vlm.v, vsm.v), which has: evl (effective vector length) = ceil(env->vl / 8). The new instructions operate the same as unmasked byte loads and stores. Add evl parameter to reuse vext_ldst_us(). Signed-off-by: Frank Chang <frank.chang@sifive.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Message-Id: <20211210075704.23951-74-frank.chang@sifive.com> Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2021-12-20target/riscv: rvv-1.0: add vsetivli instructionFrank Chang
Signed-off-by: Frank Chang <frank.chang@sifive.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Message-Id: <20211210075704.23951-73-frank.chang@sifive.com> Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2021-12-20target/riscv: rvv-1.0: rename r2_zimm to r2_zimm11Frank Chang
Rename r2_zimm to r2_zimm11 for the upcoming vsetivli instruction. vsetivli has 10-bits of zimm but vsetvli has 11-bits of zimm. Signed-off-by: Frank Chang <frank.chang@sifive.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Message-Id: <20211210075704.23951-72-frank.chang@sifive.com> Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2021-12-20target/riscv: rvv-1.0: floating-point reciprocal estimate instructionFrank Chang
Implement the floating-point reciprocal estimate to 7 bits instruction. Signed-off-by: Frank Chang <frank.chang@sifive.com> Acked-by: Alistair Francis <alistair.francis@wdc.com> Message-Id: <20211210075704.23951-71-frank.chang@sifive.com> Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2021-12-20target/riscv: rvv-1.0: floating-point reciprocal square-root estimate ↵Frank Chang
instruction Implement the floating-point reciprocal square-root estimate to 7 bits instruction. Signed-off-by: Frank Chang <frank.chang@sifive.com> Acked-by: Alistair Francis <alistair.francis@wdc.com> Message-Id: <20211210075704.23951-70-frank.chang@sifive.com> Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2021-12-20target/riscv: gdb: support vector registers for rv64 & rv32Hsiangkai Wang
Signed-off-by: Hsiangkai Wang <kai.wang@sifive.com> Signed-off-by: Greentime Hu <greentime.hu@sifive.com> Signed-off-by: Frank Chang <frank.chang@sifive.com> Acked-by: Alistair Francis <alistair.francis@wdc.com> Message-Id: <20211210075704.23951-69-frank.chang@sifive.com> Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
generated by cgit v1.2.3 (git 2.26.2) at 2025-03-16 21:28:02 +0000