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From: suzhe@turbolinux.com.cn To: gcc-gnats@gcc.gnu.org Subject: ada/8837: (was 8814) GCC 3.2.1 generates wrong code when compiling linux kernel for Intel StrongARM SA1110 Assabet Development board. Date: Thu, 05 Dec 2002 17:26:00 -0000 [thread overview] Message-ID: <20021206011704.27417.qmail@sources.redhat.com> (raw) >Number: 8837 >Category: ada >Synopsis: (was 8814) GCC 3.2.1 generates wrong code when compiling linux kernel for Intel StrongARM SA1110 Assabet Development board. >Confidential: no >Severity: serious >Priority: medium >Responsible: unassigned >State: open >Class: sw-bug >Submitter-Id: net >Arrival-Date: Thu Dec 05 17:26:00 PST 2002 >Closed-Date: >Last-Modified: >Originator: suzhe@turbolinux.com.cn >Release: 3.2.1 >Organization: >Environment: Host Linux with gcc 3.2 and 2.95.3 (tried both). target is an Intel StrongARM SA1110 Assabet Development board. the version of binutils is 2.13.1. >Description: You may download the objdump result of two kernel binary at: http://www.gnuchina.org/~suzhe/vmlinux-asm.tar.bz2 gcc 2.95.2 version is OK. But gcc 3.2.1 version cannot boot. kernel compiled with gcc 3.2.1 freezed at the first syscall (clone) when execute init kernel thread. I traced into the kernel and found that the syscall (clone) in kernel_thread function has no effect. I knew little about ARM asm language, so I cannot point out which code section is wrong. But I guess we can focus on kernel_thread and vector_swi functions. http://www.gnuchina.org/~suzhe/vmlinux-asm.tar.bz2 >How-To-Repeat: >Fix: >Release-Note: >Audit-Trail: >Unformatted:
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