From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001

From: Peter Jones <pjones@redhat.com>

Date: Mon, 15 Feb 2021 14:21:48 +0100

Subject: [PATCH] util/mkimage: Reorder PE optional header fields set-up

This makes the PE32 and PE32+ header fields set-up easier to follow by

setting them closer to the initialization of their related sections.

Signed-off-by: Peter Jones <pjones@redhat.com>

Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>

Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>

---

 util/mkimage.c | 16 ++++++++--------

 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/util/mkimage.c b/util/mkimage.c

index ff5462c98..e73a5864b 100644

--- a/util/mkimage.c

+++ b/util/mkimage.c

@@ -1320,16 +1320,12 @@ grub_install_generate_image (const char *dir, const char *prefix,

 	    sections = o64 + 1;

 	  }

-	PE_OHDR (o32, o64, code_size) = grub_host_to_target32 (layout.exec_size);

-	PE_OHDR (o32, o64, data_size) = grub_host_to_target32 (reloc_addr - layout.exec_size - header_size);

+	PE_OHDR (o32, o64, header_size) = grub_host_to_target32 (header_size);

 	PE_OHDR (o32, o64, entry_addr) = grub_host_to_target32 (layout.start_address);

-	PE_OHDR (o32, o64, code_base) = grub_host_to_target32 (header_size);

-

 	PE_OHDR (o32, o64, image_base) = 0;

+	PE_OHDR (o32, o64, image_size) = grub_host_to_target32 (pe_size);

 	PE_OHDR (o32, o64, section_alignment) = grub_host_to_target32 (image_target->section_align);

 	PE_OHDR (o32, o64, file_alignment) = grub_host_to_target32 (GRUB_PE32_FILE_ALIGNMENT);

-	PE_OHDR (o32, o64, image_size) = grub_host_to_target32 (pe_size);

-	PE_OHDR (o32, o64, header_size) = grub_host_to_target32 (header_size);

 	PE_OHDR (o32, o64, subsystem) = grub_host_to_target16 (GRUB_PE32_SUBSYSTEM_EFI_APPLICATION);

 	/* Do these really matter? */

@@ -1339,10 +1335,10 @@ grub_install_generate_image (const char *dir, const char *prefix,

 	PE_OHDR (o32, o64, heap_commit_size) = grub_host_to_target32 (0x10000);

 	PE_OHDR (o32, o64, num_data_directories) = grub_host_to_target32 (GRUB_PE32_NUM_DATA_DIRECTORIES);

-	PE_OHDR (o32, o64, base_relocation_table.rva) = grub_host_to_target32 (reloc_addr);

-	PE_OHDR (o32, o64, base_relocation_table.size) = grub_host_to_target32 (layout.reloc_size);

 	/* The sections.  */

+	PE_OHDR (o32, o64, code_base) = grub_host_to_target32 (header_size);

+	PE_OHDR (o32, o64, code_size) = grub_host_to_target32 (layout.exec_size);

 	text_section = sections;

 	strcpy (text_section->name, ".text");

 	text_section->virtual_size = grub_host_to_target32 (layout.exec_size);

@@ -1354,6 +1350,8 @@ grub_install_generate_image (const char *dir, const char *prefix,

 						| GRUB_PE32_SCN_MEM_EXECUTE

 						| GRUB_PE32_SCN_MEM_READ);

+	PE_OHDR (o32, o64, data_size) = grub_host_to_target32 (reloc_addr - layout.exec_size - header_size);

+

 	data_section = text_section + 1;

 	strcpy (data_section->name, ".data");

 	data_section->virtual_size = grub_host_to_target32 (layout.kernel_size - layout.exec_size);

@@ -1376,6 +1374,8 @@ grub_install_generate_image (const char *dir, const char *prefix,

 			      | GRUB_PE32_SCN_MEM_READ

 			      | GRUB_PE32_SCN_MEM_WRITE);

+	PE_OHDR (o32, o64, base_relocation_table.rva) = grub_host_to_target32 (reloc_addr);

+	PE_OHDR (o32, o64, base_relocation_table.size) = grub_host_to_target32 (layout.reloc_size);

 	reloc_section = mods_section + 1;

 	strcpy (reloc_section->name, ".reloc");

 	reloc_section->virtual_size = grub_host_to_target32 (layout.reloc_size);