kexec-tools-klibc: add kexec-x32.patch from oe-core

This is the last patch borrowed from the actual oe-core recipe.

Signed-off-by: Andrea Adami <andrea.adami@gmail.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>

2 files changed, 90 insertions, 1 deletions

diff --git a/meta-initramfs/recipes-kernel/kexec/kexec-tools-klibc/kexec-x32.patch b/meta-initramfs/recipes-kernel/kexec/kexec-tools-klibc/kexec-x32.patch
new file mode 100644
index 000000000..26d18eb6f
--- /dev/null
+++ b/meta-initramfs/recipes-kernel/kexec/kexec-tools-klibc/kexec-x32.patch
@@ -0,0 +1,88 @@
+x86_64: Add support to build kexec-tools with x32 ABI
+
+Summary of changes,
+
+configure.ac: Add test for detect x32 ABI.
+purgatory/arch/x86_64/Makefile: Not use mcmodel large when
+        x32 ABI is set.
+kexec/arch/x86_64/kexec-elf-rel-x86_64.c: When x32 ABI is set
+        use ELFCLASS32 instead of ELFCLASS64.
+kexec/kexec-syscall.h: Add correct syscall number for x32 ABI.
+
+Upstream-Status: Submitted
+
+Signed-off-by: Aníbal Limón <anibal.limon@linux.intel.com>
+Signed-off-by: Mariano Lopez <mariano.lopez@linux.intel.com>
+
+---
+ configure.ac                             | 9 +++++++++
+ kexec/arch/x86_64/kexec-elf-rel-x86_64.c | 4 ++++
+ kexec/kexec-syscall.h                    | 4 ++++
+ purgatory/arch/x86_64/Makefile           | 4 +++-
+ 4 files changed, 20 insertions(+), 1 deletion(-)
+
+Index: kexec-tools-2.0.10/configure.ac
+===================================================================
+--- kexec-tools-2.0.10.orig/configure.ac
++++ kexec-tools-2.0.10/configure.ac
+@@ -56,6 +56,15 @@ case $target_cpu in
+                ;;
+        ia64|x86_64|alpha|m68k )
+                ARCH="$target_cpu"
++
++               dnl ---Test for x32 ABI in x86_64
++               if test "x$ARCH" = "xx86_64" ; then
++                       AC_EGREP_CPP(x32_test,
++                       [#if defined(__x86_64__) && defined (__ILP32__)
++                               x32_test
++                       #endif
++                       ], SUBARCH='x32', SUBARCH='64')
++               fi
+                ;;
+        * )
+                AC_MSG_ERROR([unsupported architecture $target_cpu])
+Index: kexec-tools-2.0.10/kexec/arch/x86_64/kexec-elf-rel-x86_64.c
+===================================================================
+--- kexec-tools-2.0.10.orig/kexec/arch/x86_64/kexec-elf-rel-x86_64.c
++++ kexec-tools-2.0.10/kexec/arch/x86_64/kexec-elf-rel-x86_64.c
+@@ -8,7 +8,11 @@ int machine_verify_elf_rel(struct mem_eh
+        if (ehdr->ei_data != ELFDATA2LSB) {
+                return 0;
+        }
++#ifdef __ILP32__
++       if (ehdr->ei_class != ELFCLASS32) {
++#else
+        if (ehdr->ei_class != ELFCLASS64) {
++#endif
+                return 0;
+        }
+        if (ehdr->e_machine != EM_X86_64) {
+Index: kexec-tools-2.0.10/kexec/kexec-syscall.h
+===================================================================
+--- kexec-tools-2.0.10.orig/kexec/kexec-syscall.h
++++ kexec-tools-2.0.10/kexec/kexec-syscall.h
+@@ -31,8 +31,12 @@
+ #define __NR_kexec_load                268
+ #endif
+ #ifdef __x86_64__
++#ifdef __ILP32__
++#define __NR_kexec_load                528
++#else
+ #define __NR_kexec_load                246
+ #endif
++#endif
+ #ifdef __s390x__
+ #define __NR_kexec_load                277
+ #endif
+Index: kexec-tools-2.0.10/purgatory/arch/x86_64/Makefile
+===================================================================
+--- kexec-tools-2.0.10.orig/purgatory/arch/x86_64/Makefile
++++ kexec-tools-2.0.10/purgatory/arch/x86_64/Makefile
+@@ -23,4 +23,6 @@ x86_64_PURGATORY_SRCS += purgatory/arch/
+ x86_64_PURGATORY_SRCS += purgatory/arch/i386/vga.c
+ x86_64_PURGATORY_SRCS += purgatory/arch/i386/pic.c
+ 
+-x86_64_PURGATORY_EXTRA_CFLAGS = -mcmodel=large
++ifeq ($(SUBARCH),64)
++        x86_64_PURGATORY_EXTRA_CFLAGS = -mcmodel=large
++endif
diff --git a/meta-initramfs/recipes-kernel/kexec/kexec-tools-klibc_git.bb b/meta-initramfs/recipes-kernel/kexec/kexec-tools-klibc_git.bb
index 7558b571c..d6d3dc835 100644
--- a/meta-initramfs/recipes-kernel/kexec/kexec-tools-klibc_git.bb
+++ b/meta-initramfs/recipes-kernel/kexec/kexec-tools-klibc_git.bb
@@ -35,7 +35,8 @@ KLIBC_PATCHES += " \
 
 WARNING_FIXES = ""
 FROM_OE_CORE = "file://arm_crashdump-fix-buffer-align.patch \
-                file://powerpc_change-the-memory-size-limit.patch"
+                file://powerpc_change-the-memory-size-limit.patch \
+                file://kexec-x32.patch"
 
 SRC_URI += "${BUILD_PATCHES} ${KLIBC_PATCHES} ${WARNING_FIXES} ${FROM_OE_CORE}"