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From 3d24d0452bb11e371c710a68b88f09c3accee51f Mon Sep 17 00:00:00 2001
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From: Henning Schild <henning@hennsch.de>
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Date: Wed, 5 Sep 2012 14:56:39 +0200
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Subject: [PATCH] fix entry pointer for ELF kernels loaded with -kernel option
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Find a hopefully proper patch attached. Take it or leave it.
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Reviewed-by: Kevin Wolf <kwolf@redhat.com>
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Signed-off-by: Henning Schild <henning@hennsch.de>
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Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
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(cherry picked from commit 7e9c7ffe9fd9dfc3d0168dd584936db8144b230b)
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Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
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---
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hw/elf_ops.h | 11 +++++++++++
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1 file changed, 11 insertions(+)
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diff --git a/hw/elf_ops.h b/hw/elf_ops.h
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index fa65ce2..731a983 100644
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--- a/hw/elf_ops.h
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+++ b/hw/elf_ops.h
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@@ -269,6 +269,17 @@ static int glue(load_elf, SZ)(const char *name, int fd,
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addr = ph->p_paddr;
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}
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+ /* the entry pointer in the ELF header is a virtual
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+ * address, if the text segments paddr and vaddr differ
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+ * we need to adjust the entry */
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+ if (pentry && !translate_fn &&
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+ ph->p_vaddr != ph->p_paddr &&
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+ ehdr.e_entry >= ph->p_vaddr &&
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+ ehdr.e_entry < ph->p_vaddr + ph->p_filesz &&
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+ ph->p_flags & PF_X) {
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+ *pentry = ehdr.e_entry - ph->p_vaddr + ph->p_paddr;
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+ }
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+
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snprintf(label, sizeof(label), "phdr #%d: %s", i, name);
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rom_add_blob_fixed(label, data, mem_size, addr);
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--
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1.7.12.1
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