Web#define CSR_MTVEC 0x305 #define CSR_MSCRATCH 0x340 ... + csrw sscratch, 0 + +#ifdef CONFIG_FPU + csrr t0, CSR_MISA + andi t0, t0, (COMPAT_HWCAP_ISA_F COMPAT_HWCAP_ISA_D) + bnez t0, .Lreset_regs_done + + li t1, SR_FS + csrs CSR_XSTATUS, t1 + fmv.s.x f0, zero WebThis instruction replaces the csrw instruction we have used before, because csrw is just a special case of csrrw. This instruction is decoded to a new iType of Csrrw. Since csrrw will write two registers, the ExecInst type in ProcTypes.bsv incorporates a new field "Data csrData", which contains the data to be written into csr.
Control registers :: Potato Processor :: OpenCores
WebApr 11, 2024 · 批处理系统. 当计算机执行完一条指令的时候, 就自动执行下一条指令. 类似的, 我们能不能让管理员事先准备好一组程序, 让计算机执行完一个程序之后, 就自动执行下一个程序呢? http://csg.csail.mit.edu/6.175/lectures/L09-RISC-V%20ISA.pdf great harvest bread grand rapids
[小知识]总结CSRs寄存器的读写指令 - CSDN博客
WebI am trying to write a reuseable macro to configure some CSR's in assembly. E.g.macro initTrap entry, status, enable la t0, entry csrw mtvec, t0 csrwi mstatus, status csrwi mie, enable .endm Then to use it (at least to test): initTrap trap_entry, 0x0, 0x0 WebLKML Archive on lore.kernel.org help / color / mirror / Atom feed * RISC-V nommu support v5 @ 2024-10-17 17:37 Christoph Hellwig 2024-10-17 17:37 ` [PATCH 01/15] riscv: cleanup Christoph Hellwig ` (15 more replies) 0 siblings, 16 replies; 49+ messages in thread From: Christoph Hellwig @ 2024-10-17 17:37 UTC (permalink / raw) To: Palmer … WebNov 27, 2024 · 1. RISC-V Privilege Levels. RISC-V defines three privilege modes: machine mode (M), supervisor mode (S), and user mode (U). The M Mode is mandatory, and the other two modes are optional. Different modes can be combined to implement systems for different purposes. M: simple embedded systems. flm srls cardito