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Differential D59898

libthr: add LoongArch support
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Authored by zhaoxiaoqiang007_gmail.com on Tue, Sep 22, 2:25 PM.

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shipujin.t_gmail.com

zishun.yi.dev_gmail.com

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Reviewers

jkoshy
kib
shipujin.t_gmail.com

Summary

Add pthread_md.h TLS/TP glue and the libthread_db register mapping.

Signed-off-by: Xiaoqiang Zhao <zhaoxiaoqiang007@gmail.com>

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Repository

rG FreeBSD src repository

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Lint Skipped

Unit

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Build Status

Buildable 77178
Build 74061: arc lint + arc unit

Event Timeline

zhaoxiaoqiang007_gmail.com created this revision.Tue, Sep 22, 2:25 PM

Herald added a subscriber: imp. · View Herald TranscriptTue, Sep 22, 2:25 PM

zhaoxiaoqiang007_gmail.com requested review of this revision.Tue, Sep 22, 2:25 PM

Harbormaster completed remote builds in B77178: Diff 187416.Tue, Sep 22, 2:25 PM

zhaoxiaoqiang007_gmail.com added a parent revision: D59897: rtld: add LoongArch support.Tue, Sep 22, 2:25 PM

zhaoxiaoqiang007_gmail.com added a child revision: D59899: clang: enable the LoongArch target in in-tree llvm builds.

zishun.yi.dev_gmail.com added a subscriber: zishun.yi.dev_gmail.com.Tue, Sep 22, 2:42 PM

gehaowu_bitmoe.com added a subscriber: gehaowu_bitmoe.com.Tue, Sep 22, 8:48 PM

jkoshy added a reviewer: jkoshy.Wed, Sep 23, 8:11 AM

zhaoxiaoqiang007_gmail.com added a reviewer: kib.Wed, Sep 23, 8:19 AM

shipujin.t_gmail.com added a subscriber: shipujin.t_gmail.com.Fri, Sep 25, 2:08 PM

shipujin.t_gmail.com added inline comments.

lib/libthr/arch/loongarch/include/pthread_md.h
38	`CPU_SPINWAIT` is used in spinlock loops to give the CPU a lightweight hint (such as x86's `pause`) to reduce power consumption and memory bus contention, but LoongArch has no equivalent instruction. Therefore, like RISC-V, AArch64, ARM, and PowerPC, this should define the macro as `#define CPU_SPINWAIT` rather than using a compiler memory barrier. Suggested change to: #define CPU_SPINWAIT

shipujin.t_gmail.com added a reviewer: shipujin.t_gmail.com.Sat, Oct 17, 1:09 AM

Revision Contents
Changeset List

Path

Size

lib/

libthr/

arch/

loongarch/

include/

59 lines

libthread_db/

arch/

loongarch/

libpthread_md.c

119 lines

Diff 187416

lib/libthr/arch/loongarch/Makefile.inc

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lib/libthr/arch/loongarch/include/pthread_md.h

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lib/libthread_db/arch/loongarch/libpthread_md.c

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