iovisor/bcc

bcc fail to run on armhf

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#4,487 创建于 2023年2月17日

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help wanted

描述

My configuration

  • Linux kernel version: 5.10
  • Compilied bcc version: 0.25.0
  • LLVM version: 11.0-51+nmu5

Problem

I tried to execute my bpf program with bcc on armhf, and I had getting many errors about SMP and registers. Like in #1202 issue, first error was "error: register 'sp' unsuitable for global register variables on this target". Full log in attached file.

log.txt

Inspection in bcc

Looks like that the following files doesn't contain information about working with the armhf architecture:

贡献者指南

技术栈
c
领域
performancetoolingobservability
议题类型
bug
难度面向新贡献者的预计实现难度，1 表示很小改动，5 表示专家级工作。
4
预计时间有经验贡献者完成调查、实现、测试并准备 pull request 的粗略时间范围。
3-5 days
活动状态议题当前的可参与程度：新鲜、活跃、陈旧、阻塞或等待维护者输入。
active
清晰度议题是否清楚说明期望改动、验收标准和下一步。
mostly clear
前置要求
C programmingBPF conceptsARM architecture
新手友好度1-100 的估计分数，表示该议题对首次贡献者的友好程度。
25
研究方向
The issue requires adding armhf support to the BCC frontend. The files to modify are arch helper.h, b frontend action.cc, and bcc proc.c. Investigate the existing architecture specific code in those files (e.g., for x86 64 or aarch64) and add equivalent handling for armhf. Check the comments in the issue and linked issue #1202 for similar register problems. Ensure the BPF program can compile with the correct register constraints for ARM. Test on an armhf machine or emulator.