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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Peter Jones <pjones@redhat.com>
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Date: Thu, 11 Feb 2021 17:07:33 +0100
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Subject: [PATCH] util/mkimage: Improve data_size value calculation
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According to "Microsoft Portable Executable and Common Object File Format
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Specification", the Optional Header SizeOfInitializedData field contains:
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Size of the initialized data section, or the sum of all such sections if
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there are multiple data sections.
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Make this explicit by adding the GRUB kernel data size to the sum of all
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the modules sizes. The ALIGN_UP() is not required by the PE spec but do
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it to avoid alignment issues.
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Signed-off-by: Peter Jones <pjones@redhat.com>
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Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
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Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
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---
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util/mkimage.c | 6 +++++-
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1 file changed, 5 insertions(+), 1 deletion(-)
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diff --git a/util/mkimage.c b/util/mkimage.c
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index 18a92c68d15..ed2d59d995f 100644
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--- a/util/mkimage.c
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+++ b/util/mkimage.c
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@@ -1213,6 +1213,7 @@ grub_install_generate_image (const char *dir, const char *prefix,
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void *pe_img;
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grub_uint8_t *header;
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void *sections;
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+ size_t scn_size;
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size_t pe_size;
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struct grub_pe32_coff_header *c;
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struct grub_pe32_section_table *text_section, *data_section;
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@@ -1315,7 +1316,10 @@ grub_install_generate_image (const char *dir, const char *prefix,
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| GRUB_PE32_SCN_MEM_EXECUTE
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| GRUB_PE32_SCN_MEM_READ);
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- PE_OHDR (o32, o64, data_size) = grub_host_to_target32 (reloc_addr - layout.exec_size - header_size);
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+ scn_size = ALIGN_UP (layout.kernel_size - layout.exec_size, GRUB_PE32_FILE_ALIGNMENT);
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+ PE_OHDR (o32, o64, data_size) = grub_host_to_target32 (scn_size +
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+ ALIGN_UP (total_module_size,
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+ GRUB_PE32_FILE_ALIGNMENT));
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data_section = text_section + 1;
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strcpy (data_section->name, ".data");
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