Date: Sun, 8 Apr 2018 16:55:28 +0000 (UTC) From: Justin Hibbits <jhibbits@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r332289 - head/sys/powerpc/powerpc Message-ID: <201804081655.w38GtSr1007922@repo.freebsd.org>
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Author: jhibbits Date: Sun Apr 8 16:55:28 2018 New Revision: 332289 URL: https://svnweb.freebsd.org/changeset/base/332289 Log: powerpc64: Print current MSR on printtrap() Summary: Print current MSR on printtrap(). Currently, printtrap just prints srr1, which contains part of the MSR prior to the exception. I find useful to dump the current value of the MSR, since it changes when there is an interruption. With this patch, this is the new printtrap model: handled user trap: exception = 0x700 (program) srr0 = 0x100008a0 (0x100008a0) srr1 = 0x800000000002f032 current msr = 0x8000000000009032 lr = 0x1000089c (0x1000089c) curthread = 0x7a50000 pid = 714, comm = ttrap2 Submitted by: Breno Leitao Reviewed by: nwhitehorn Differential Revision: https://reviews.freebsd.org/D14600 Modified: head/sys/powerpc/powerpc/trap.c Modified: head/sys/powerpc/powerpc/trap.c ============================================================================== --- head/sys/powerpc/powerpc/trap.c Sun Apr 8 16:54:07 2018 (r332288) +++ head/sys/powerpc/powerpc/trap.c Sun Apr 8 16:55:28 2018 (r332289) @@ -507,6 +507,7 @@ printtrap(u_int vector, struct trapframe *frame, int i printf(" srr0 = 0x%" PRIxPTR " (0x%" PRIxPTR ")\n", frame->srr0, frame->srr0 - (register_t)(__startkernel - KERNBASE)); printf(" srr1 = 0x%lx\n", (u_long)frame->srr1); + printf(" current msr = 0x%" PRIxPTR "\n", mfmsr()); printf(" lr = 0x%" PRIxPTR " (0x%" PRIxPTR ")\n", frame->lr, frame->lr - (register_t)(__startkernel - KERNBASE)); printf(" curthread = %p\n", curthread);
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