Csrw mepc t0

WebJul 30, 2024 · 执行该段代码，hart 0 不执行 // hart0 copy结束后，其它hart 跳转到_wait_for_boot_hart la t0, _start la t1, _link_start REG_L t1, 0(t1) beq t0, t1, _wait_for_boot_hart la t2, _boot_status sub t2, t2, t0 add t2, t2, t1 la t3, _wait_for_boot_hart // 转化成实际地址 sub t3, t3, t0 add t3, t3, t1 1: /* waitting for relocate ... WebSep 27, 2024 · The mepc register is the "machine exception program counter", which is the memory address we are going to return to. The symbol kmain is defined in Rust and is our escape ticket out of assembly. The mtvec (machine trap vector), is a kernel function that will called whenever there is a trap, such as a system call, illegal instruction, or even a ...

RISC-V MCU启动文件分析 -- 以CH32V103为例 - Wahahahehehe

WebThis file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters. Webcsrw mtvec, t0; \ ###将-1赋值给t0，实际上是赋0xFFFF_FFFF给t0 ... 34129073 csrw mepc,t0 100d0: f1402573 csrr a0,mhartid 100d4: 30200073 mret 000100d8 : asm_start(): 100d8: aaaab5b7 lui a1,0xaaaab 100dc: aaa58593 addi a1,a1,-1366 # aaaaaaaa <_end+0xaaa98aaa> ... solway house residential home https://fairysparklecleaning.com

RISC-V Bare Bones - OSDev Wiki

WebIs it me or qemu broke? Here is the toy code I test..section .text.init .global _start _start: .option push .option norelax la gp, _global_pointer .option pop la sp, _stack_start la t0, main csrw mepc, t0 li t1, 0b1 << 11 csrw mstatus, t1 li t2, 0 csrw satp, t2 la ra, wfi_spin csrw mtvec, ra mret wfi_spin: wfi j wfi_spin WebThe RISC-V Instruction Set Manual Volume II: Privileged Architecture Version 1.7 Andrew Waterman Yunsup Lee Rimas Avizienis David A. Patterson Krste Asanović WebThe 120-hour or 72-hour period shall commence upon the next nonholiday weekday following the court order and shall run to the end of the last nonholiday weekday within … small business bids

如何建立自己的RISC-V编译环境–汇编? 码农家园

Category:ch32v003-startup/ch32v00x_startup.S at main - Github

Tags:Csrw mepc t0

Csrw mepc t0

ch32v003-startup/ch32v00x_startup.S at main - Github

WebApr 19, 2024 · li t0, 0x1f csrw 0xbc0, t0 /* Enable nested and hardware stack */ li t0, 0x1f csrw 0x804, ... 1 bnez a0, 1 b jal SystemInit la t0, main csrw mepc, t0 mret. 这里有一些自定义的 csr，比如 corecfgr(0xbc0)，intsyscr(0x804，设置了 HWSTKEN=1, INESTEN=1, PMTCFG=0b11, HWSTKOVEN=1)，具体参考 QingKeV4_Processor_Manual。接着代码 ... WebApr 13, 2024 · QingKeV4 微处理器手册 V1.1 说明 青稞V4系列微处理器是基于标准RISC-V指令集架构，自研的32位通用MCU微处理器。根据不

Csrw mepc t0

Did you know?

Webcsrw mstatus, t0: #ifdef STARTUP_ENABLE_HPE /* Enable PFIC HPE and nesting */ li t0, 0x3: #else /* Only enable nesting, not HPE */ li t0, 0x2: #endif: csrw 0x804, t0 /* Set vector table base address and mode (table entries contain absolute: address of ISR and interrupt entry is determined by IRQ number multiplied: by 4) */ la t0, _start: ori t0 ... WebMay 1, 2024 · It seems there is a bug in RISC-V port pxPortInitialiseStack(). In RISC-V port pxPortInitialiseStack() implementation, the mstatus value onto the stack is the current …

http://osblog.stephenmarz.com/ch4.html WebJun 14, 2024 · csrr t1, mstatus srli t0, t1, 13 andi t0, t0, 3 li t3, 3 bne t0, t3, 1f .set i, 0 .rept 32 save_fp %i, t5 .set i, i+1 .endr 1: Above, we read the mstatus register, shift it right 13 places and mask it with 3, which is …

Web就是禁用中断 ret .global cpu_intrpt_restore .type cpu_intrpt_restore, %function cpu_intrpt_restore: csrw mstatus, a0 // a0 是传进来的参数，即上一次保存的控制状态寄存器的值，对于 a0 中每一个为 1 的位，把 mstatus 中对应的位进行置位 ret .global cpu_task_switch .type cpu_task_switch, %function cpu ... WebNov 5, 2024 · This symbol comes from virt.lds la sp, _stack_end # Setting `mstatus` register: # 0b01 11: Machine's previous protection mode is 2 (MPP=2). li t0, 0b11 . 11 csrw …

WebJun 14, 2024 · csrr t1, mstatus srli t0, t1, 13 andi t0, t0, 3 li t3, 3 bne t0, t3, 1f .set i, 0 .rept 32 save_fp %i, t5 .set i, i+1 .endr 1: Above, we read the mstatus register, shift it right 13 …

WebSep 10, 2024 · csrw mepc, t0 la ra, cpu_halt # If we return from main, halt. mret If I set the mstatus.mpp field to 0b11 for machine mode, I can get to kernel_main without any problem. solway indonesiahttp://csg.csail.mit.edu/6.175/lectures/L09-RISC-V%20ISA.pdf small business big money akin alabi free pdfWebla t0, __stack_end__ csrw CSR_MSCRATCH, t0. 1.把工程的桟底写入to寄存器. 2.然后通过csrw指令写入内核暂存寄存器CSR_MSCRATCH. LOAD sp, pxCurrentTCB LOAD sp, 0x0(sp) 1.把pxCurrentTCB赋予桟指正sp,而pxCurrentTCB就是任务,而任务结构体的第一项就是桟顶.这就对应起来了 small business big businessWebDec 27, 2024 · la supervisor, t0 csrw mepc, t0 mret Setting Up a Supervisor Trap Handler Link to heading. Similar to our mtrap routine in machine mode, we also need to setup a supervisor mode trap handler … small business big gameWeb将31个寄存器 + mcause + mstatus + mepc 全部到在栈上 ... -CONTEXT_SIZE MAP (REGS, PUSH) csrr t0, mcause csrr t1, mstatus csrr t2, mepc STORE t0, OFFSET_CAUSE(sp) ... # a0 is address of Context* mv sp, a0 LOAD t1, OFFSET_STATUS(sp) LOAD t2, OFFSET_EPC(sp) csrw mstatus, t1 csrw mepc, t2 MAP (REGS, POP) addi sp, sp, … solway house residential home maryportWebApr 1, 2024 · la t0, main csrw mepc, t0 mret Here the code loads the address of main() into the mepc register, then executes an mret. What this is doing is essentially 'returning' to … small business big game winnerWebCSRW rs1, csr (funct3 = CSRRW, rd = x0): csr rs1 ... t0 to t6 – temporary registers (caller-saved) ... Passes mcause, mepc, stack pointer to the IH (a C function) to handle the specific interrupt 3. On the return from the IH, writes the return value to mepc 4. solway industrial estate