grub2/0326-grub-core-kern-elfXX.c-grub_elfXX_load-Handle.patch

From bbed773160168ebd75f57a893c7d563673abf36f Mon Sep 17 00:00:00 2001
From: Vladimir 'phcoder' Serbinenko <phcoder@gmail.com>
Date: Fri, 19 Apr 2013 15:05:11 +0200
Subject: [PATCH 326/482] 	* grub-core/kern/elfXX.c (grub_elfXX_load):
 Handle 	GRUB_ELF_LOAD_FLAGS_30BITS and GRUB_ELF_LOAD_FLAGS_62BITS. 
 * grub-core/loader/powerpc/ieee1275/linux.c (grub_linux_load32), 
 (grub_linux_load64): Mask out 2 high bits.

---
 ChangeLog                                 |  7 +++++++
 grub-core/kern/elfXX.c                    | 16 ++++++++++++++--
 grub-core/loader/powerpc/ieee1275/linux.c |  4 ++--
 include/grub/elfload.h                    |  4 ++++
 4 files changed, 27 insertions(+), 4 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 7450036..3799129 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2013-04-19  Vladimir Serbinenko  <phcoder@gmail.com>
+
+	* grub-core/kern/elfXX.c (grub_elfXX_load): Handle
+	GRUB_ELF_LOAD_FLAGS_30BITS and GRUB_ELF_LOAD_FLAGS_62BITS.
+	* grub-core/loader/powerpc/ieee1275/linux.c (grub_linux_load32),
+	(grub_linux_load64): Mask out 2 high bits.
+
 2013-04-19  Andrey Borzenkov <arvidjaar@gmail.com>
 
 	* util/grub.d/30_os-prober.in: Add onstr to linux entries in one
diff --git a/grub-core/kern/elfXX.c b/grub-core/kern/elfXX.c
index b35e235..2e45449 100644
--- a/grub-core/kern/elfXX.c
+++ b/grub-core/kern/elfXX.c
@@ -101,8 +101,20 @@ grub_elfXX_load (grub_elf_t elf, const char *filename,
       continue;
 
     load_addr = (grub_addr_t) phdr->p_paddr;
-    if (load_flags & GRUB_ELF_LOAD_FLAGS_28BITS)
-      load_addr &= 0xFFFFFFF;
+    switch (load_flags & GRUB_ELF_LOAD_FLAGS_BITS)
+      {
+      case GRUB_ELF_LOAD_FLAGS_ALL_BITS:
+	break;
+      case GRUB_ELF_LOAD_FLAGS_28BITS:
+	load_addr &= 0xFFFFFFF;
+	break;
+      case GRUB_ELF_LOAD_FLAGS_30BITS:
+	load_addr &= 0x3FFFFFFF;
+	break;
+      case GRUB_ELF_LOAD_FLAGS_62BITS:
+	load_addr &= 0x3FFFFFFFFFFFFFFFULL;
+	break;
+      }
     load_addr += (grub_addr_t) load_offset;
 
     if (load_addr < load_base)
diff --git a/grub-core/loader/powerpc/ieee1275/linux.c b/grub-core/loader/powerpc/ieee1275/linux.c
index cff4fd1..3356d51 100644
--- a/grub-core/loader/powerpc/ieee1275/linux.c
+++ b/grub-core/loader/powerpc/ieee1275/linux.c
@@ -204,7 +204,7 @@ grub_linux_load32 (grub_elf_t elf, const char *filename)
   linux_addr = seg_addr;
 
   /* Now load the segments into the area we claimed.  */
-  return grub_elf32_load (elf, filename, (void *) (seg_addr - base_addr), GRUB_ELF_LOAD_FLAGS_NONE, 0, 0);
+  return grub_elf32_load (elf, filename, (void *) (seg_addr - base_addr), GRUB_ELF_LOAD_FLAGS_30BITS, 0, 0);
 }
 
 static grub_err_t
@@ -238,7 +238,7 @@ grub_linux_load64 (grub_elf_t elf, const char *filename)
   linux_addr = seg_addr;
 
   /* Now load the segments into the area we claimed.  */
-  return grub_elf64_load (elf, filename, (void *) (grub_addr_t) (seg_addr - base_addr), GRUB_ELF_LOAD_FLAGS_NONE, 0, 0);
+  return grub_elf64_load (elf, filename, (void *) (grub_addr_t) (seg_addr - base_addr), GRUB_ELF_LOAD_FLAGS_62BITS, 0, 0);
 }
 
 static grub_err_t
diff --git a/include/grub/elfload.h b/include/grub/elfload.h
index f854d0b..9a7ae4e 100644
--- a/include/grub/elfload.h
+++ b/include/grub/elfload.h
@@ -53,7 +53,11 @@ enum grub_elf_load_flags
   {
     GRUB_ELF_LOAD_FLAGS_NONE = 0,
     GRUB_ELF_LOAD_FLAGS_LOAD_PT_DYNAMIC = 1,
+    GRUB_ELF_LOAD_FLAGS_BITS = 6,
+    GRUB_ELF_LOAD_FLAGS_ALL_BITS = 0,
     GRUB_ELF_LOAD_FLAGS_28BITS = 2,
+    GRUB_ELF_LOAD_FLAGS_30BITS = 4,
+    GRUB_ELF_LOAD_FLAGS_62BITS = 6,
   };
 grub_err_t grub_elf32_load (grub_elf_t, const char *filename,
 			    void *load_offset, enum grub_elf_load_flags flags, grub_addr_t *,
-- 
1.8.2.1