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From c4249cf0d89f6a5ba4448eb1ff22f496387d0e50 Mon Sep 17 00:00:00 2001
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From: Laszlo Ersek <lersek@redhat.com>
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Date: Fri, 7 Nov 2014 17:18:11 +0100
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Subject: [PATCH 24/41] dump: select header bitness based on ELF class, not ELF
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architecture
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Message-id: <1415380693-16593-25-git-send-email-lersek@redhat.com>
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Patchwork-id: 62212
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O-Subject: [RHEL-7.1 qemu-kvm PATCH 24/26] dump: select header bitness based on ELF class, not ELF architecture
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Bugzilla: 1157798
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RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
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RH-Acked-by: Luiz Capitulino <lcapitulino@redhat.com>
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RH-Acked-by: dgibson <dgibson@redhat.com>
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The specific ELF architecture (d_machine) carries Too Much Information
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(TM) for deciding between create_header32() and create_header64(), use
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"d_class" instead (ELFCLASS32 vs. ELFCLASS64).
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This change adapts write_dump_header() to write_elf_loads(), dump_begin()
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etc. that also rely on the ELF class of the target for bitness selection.
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Considering the current targets that support dumping, cpu_get_dump_info()
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works as follows:
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- target-s390x/arch_dump.c: (EM_S390, ELFCLASS64) only
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- target-ppc/arch_dump.c (EM_PPC64, ELFCLASS64) only
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- target-i386/arch_dump.c: sets (EM_X86_64, ELFCLASS64) vs. (EM_386,
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ELFCLASS32) keying off the same Long Mode Active flag.
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Hence no observable change.
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Approximately-suggested-by: Paolo Bonzini <pbonzini@redhat.com>
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Signed-off-by: Laszlo Ersek <lersek@redhat.com>
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Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
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Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
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(cherry picked from commit 24aeeace7a9f264688e9eda77b6c04db607cbdfd)
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Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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---
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dump.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/dump.c b/dump.c
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index f8e0fd7..450f658 100644
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--- a/dump.c
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+++ b/dump.c
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@@ -1006,7 +1006,7 @@ out:
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static int write_dump_header(DumpState *s)
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{
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- if (s->dump_info.d_machine == EM_386) {
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+ if (s->dump_info.d_class == ELFCLASS32) {
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return create_header32(s);
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} else {
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return create_header64(s);
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--
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1.8.3.1
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