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简单的调用 atoi 函数会导致异常:
#include <rtthread.h> #include <stdio.h> #include <stdlib.h> static int test(int argc, char *argv[]) { int v; v = atoi("100"); rt_kprintf("v is %d\n", v); return RT_EOK; } MSH_CMD_EXPORT(test, test);
log 如下:
Unhandled Exception 2:Illegal Instruction scause:0x0x0000000000000002,stval:0x0x0000000000000000,sepc:0x0x00000000802001ce --------------Dump Registers----------------- Function Registers: ra(x1) = 0x0x0000000080218002 user_sp = 0x0x0000000080259040 gp(x3) = 0x0x0000000080234bb8 tp(x4) = 0x0x00000000deadbeef Temporary Registers: t0(x5) = 0x0x0000000000000120 t1(x6) = 0x0x00000000deadbeef t2(x7) = 0x0x0000000080258f30 t3(x28) = 0x0x00000000deadbeef t4(x29) = 0x0x00000000deadbeef t5(x30) = 0x0x00000000deadbeef t6(x31) = 0x0x00000000deadbeef Saved Registers: s0/fp(x8) = 0x0x0000000080259080 s1(x9) = 0x0x00000000deadbeef s2(x18) = 0x0x00000000deadbeef s3(x19) = 0x0x00000000deadbeef s4(x20) = 0x0x00000000deadbeef s5(x21) = 0x0x00000000deadbeef s6(x22) = 0x0x00000000deadbeef s7(x23) = 0x0x00000000deadbeef s8(x24) = 0x0x00000000deadbeef s9(x25) = 0x0x00000000deadbeef s10(x26) = 0x0x00000000deadbeef s11(x27) = 0x0x00000000deadbeef Function Arguments Registers: a0(x10) = 0x0x000000008022c7f8 a1(x11) = 0x0x00000000802590a8 a2(x12) = 0x0x00000000802590a8 a3(x13) = 0x0x00000000802590a8 a4(x14) = 0x0x0000000000000009 a5(x15) = 0x0x0000000000000009 a6(x16) = 0x0x0000000000000074 a7(x17) = 0x0x00000000deadbeef sstatus = 0x0x0000000200040120 Supervisor Interrupt Disabled Last Time Supervisor Interrupt Enabled Last Privilege is Supervisor Mode Permit to Access User Page Not Permit to Read Executable-only Page satp = 0x0x0000000000000000 Current Page Table(Physical) = 0x0x0000000000000000 Current ASID = 0x0x0000000000000000 Mode = No Address Translation/Protection Mode -----------------Dump OK--------------------- --------------Thread list-------------- current thread: tshell --------------Backtrace--------------
The text was updated successfully, but these errors were encountered:
好像很神奇呢,或许是对齐的缘故?atoi是libc的函数,目前用的libc是哪个
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v5.1.0正常,master有问题
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bsp/cvitek/cv18xx_risc-v/ master 或者 5.1.0
简单的调用 atoi 函数会导致异常:
log 如下:
The text was updated successfully, but these errors were encountered: