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efi_loader: fix building crt0 on arm

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Before the patch an undefined constant EFI_SUBSYSTEM was used in the
crt0 code. The current version of binutils does not swallow the error.

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=888403

The necessary constant IMAGE_SUBSYSTEM_EFI_APPLICATION is already
defined in pe.h. So let's factor out asm-generic/pe.h for the
image subsystem constants and use it in our assembler code.

IMAGE_SUBSYSTEM_SAL_RUNTIME_DRIVER does not exist in the specification
let's use IMAGE_SUBSYSTEM_EFI_ROM instead.

The include pe.h is only used in code maintained by Alex so let him be the
maintainer here too.

Reported-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Tested-by: Vagrant Cascadian <vagrant@debian.org>
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Heinrich Schuchardt
2018-01-31 18:45:35 +00:00
committed by Alexander Graf
parent 1811a928c6
commit 268ec6e00e
6 changed files with 32 additions and 9 deletions
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8
include/pe.h
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@@ -11,6 +11,8 @@
#ifndef _PE_H
#define _PE_H
#include <asm-generic/pe.h>
typedef struct _IMAGE_DOS_HEADER {
uint16_t e_magic; /* 00: MZ Header signature */
uint16_t e_cblp; /* 02: Bytes on last page of file */
@@ -62,12 +64,6 @@ typedef struct _IMAGE_DATA_DIRECTORY {
#define IMAGE_NUMBEROF_DIRECTORY_ENTRIES 16
/* PE32+ Subsystem type for EFI images */
#define IMAGE_SUBSYSTEM_EFI_APPLICATION 10
#define IMAGE_SUBSYSTEM_EFI_BOOT_SERVICE_DRIVER 11
#define IMAGE_SUBSYSTEM_EFI_RUNTIME_DRIVER 12
#define IMAGE_SUBSYSTEM_SAL_RUNTIME_DRIVER 13
typedef struct _IMAGE_OPTIONAL_HEADER64 {
uint16_t Magic; /* 0x20b */
uint8_t MajorLinkerVersion;