Csrw csr_mscratch t0
http://csg.csail.mit.edu/6.175/labs/lab8-riscv-exceptions.html WebThe RISC-V Instruction Set Manual Volume II: Privileged Architecture Version 1.7 …
Csrw csr_mscratch t0
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WebNov 5, 2024 · csrw mepc, a0 # Now load the trap frame back into t6 csrr t6, mscratch # Restore all GP registers .set i, 1 .rept 31 load_gp %i .set i, i+1 .endr # Since we ran this loop 31 times starting with i = 1, # the last one loaded t6 back to its original value. mret You can see we use what are known as directives and macros, such as .set and store_gp ... Websscratch register in M-mode, but it should clear mscratch register. That will cause kernel trap if the CPU core doesn't support S-mode when trying to access sscratch. Fixes: 9e80635619b5 ("riscv: clear the instruction cache and all registers when booting") Signed-off-by: Greentime Hu ---arch/riscv/kernel/head.S 2 +-
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? WebMar 25, 2024 · In the old ISA spec, the csr instructions are part of the base I instruction …
WebLKML Archive on lore.kernel.org help / color / mirror / Atom feed * [PATCH v6 0/3] Allow accessing CSR using CSR number @ 2024-04-25 8:38 Anup Patel 2024-04-25 8:38 ` [PATCH v6 1/3] RISC-V: Use tabs to align macro values in asm/csr.h Anup Patel ` (3 more replies) 0 siblings, 4 replies; 6+ messages in thread From: Anup Patel @ 2024-04-25 … WebOn Thu, Dec 19, 2024 at 12:15 PM Greentime Hu wrote: > > This patch fixes that the sscratch register clearing in M-mode. It cleared > sscratch register in M-mode, but it should clear mscratch register. That will > cause kernel trap if the CPU core doesn't support S-mode when trying to access > sscratch. > Fixes: 9e80635619b5 …
http://csg.csail.mit.edu/6.175/lectures/L09-RISC-V%20ISA.pdf
WebMar 25, 2024 · csrw CSR_MSTATUS, t0.if \have_mstatush: REG_L t0, … dws baby transcriptWebApr 26, 2024 · la t0, __stack_end__ csrw CSR_MSCRATCH, t0. 1.把工程的桟底写入to … dws baby arthurWeb80000160: ea428293 addi t0,t0,-348 # 0 <_start-0x80000000> 80000164: 00028e63 beqz t0,80000180 80000168: 10529073 csrw stvec,t0 dws bavWebJan 9, 2024 · 8. RISC-Vの権限階層 Supervisor Mode User Mode Machine Mode mret sret リセット 解除 bblは、ここで Linuxを実行 pkは、ここで ユーザアプリを実行. 9. リセット解除後 リセット解除後、 下記のコードをMahine Modeにて実行する ・reset_vector (machine/mentry.S) ・do_reset (machine/mentyr.S ... dws biotech charthttp://osblog.stephenmarz.com/ch4.html dws bafinWebNov 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. crystallized cholesterolWeb#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 dws basisrente premium