4 commits

Author	SHA1	Message	Date
LIU Zhiwei	c7a17d04a2	target/riscv: add vector stride load and store instructions ... Vector strided operations access the first memory element at the base address, and then access subsequent elements at address increments given by the byte offset contained in the x register specified by rs2. Vector unit-stride operations access elements stored contiguously in memory starting from the base effective address. It can been seen as a special case of strided operations. Backports 751538d5da557e5c10e5045c2d27639580ea54a7	2021-02-26 02:55:14 -05:00
LIU Zhiwei	9db3b70869	target/riscv: add vector configure instruction ... vsetvl and vsetvli are two configure instructions for vl, vtype. TB flags should update after configure instructions. The (ill, lmul, sew ) of vtype and the bit of (VSTART == 0 && VL == VLMAX) will be placed within tb_flags. Backports 2b7168fc43fb270fb89e1dddc17ef54714712f3a from qemu	2021-02-26 02:37:59 -05:00
Alistair Francis	e1f49dc888	target/riscv: Implement checks for hfence ... Call the helper_hyp_tlb_flush() function on hfence instructions which will generate an illegal insruction execption if we don't have permission to flush the Hypervisor level TLBs. Backports commit 2761db5fc20943bbd606b6fd49640ac000398de6 from qemu	2021-02-25 12:03:57 -05:00
Lioncash	b6f752970b	target/riscv: Initial introduction of the RISC-V target ... This ports over the RISC-V architecture from Qemu. This is currently a very barebones transition. No code hooking or any fancy stuff. Currently, you can feed it instructions and query the CPU state itself. This also allows choosing whether or not RISC-V 32-bit or RISC-V 64-bit is desirable through Unicorn's interface as well. Extremely basic examples of executing a single instruction have been added to the samples directory to help demonstrate how to use the basic functionality.	2019-03-08 21:46:10 -05:00