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Not upstreamed.
Fixes cross-build for the Hurd, from i686-linux,
see <https://bugs.gnu.org/41982>.
From 17b242e7b80108f1467037e15b605595e4823b2e Mon Sep 17 00:00:00 2001
From: "Jan (janneke) Nieuwenhuizen" <janneke@gnu.org>
Date: Sun, 21 Jun 2020 15:10:40 +0200
Subject: [PATCH v2] grub-core: Build fixes for i386
Content-Transfer-Encoding: 8bit
Content-Type: text/plain; charset=UTF-8
* grub-core/lib/i386/relocator64.S: Avoid x86_64 instructions on i386.
---
grub-core/lib/i386/relocator64.S | 33 +++++++++++++++++++++++++++++++-
1 file changed, 32 insertions(+), 1 deletion(-)
diff --git a/grub-core/lib/i386/relocator64.S b/grub-core/lib/i386/relocator64.S
index 148f38adb..ea39908c1 100644
--- a/grub-core/lib/i386/relocator64.S
+++ b/grub-core/lib/i386/relocator64.S
@@ -63,7 +63,9 @@ VARIABLE(grub_relocator64_cr3)
movq %rax, %cr3
#endif
+#ifdef __x86_64__
.code64
+#endif
/* mov imm64, %rax */
.byte 0x48
@@ -71,7 +73,14 @@ VARIABLE(grub_relocator64_cr3)
VARIABLE(grub_relocator64_rsp)
.quad 0
+#ifndef __x86_64__
+ /* movq %rax, %rsp */
+ .byte 0x48
+ .byte 0x89
+ .byte 0xc4
+#else
movq %rax, %rsp
+#endif
#ifdef GRUB_MACHINE_EFI
jmp LOCAL(skip_efi_stack_align)
@@ -85,7 +94,14 @@ VARIABLE(grub_relocator64_rsp)
*/
VARIABLE(grub_relocator64_efi_start)
/* Align the stack as UEFI spec requires. */
+#ifndef __x86_64__
+ .byte 0x48
+ .byte 0x83
+ .byte 0xe4
+ .byte 0xf0
+#else
andq $~15, %rsp
+#endif
LOCAL(skip_efi_stack_align):
#endif
@@ -95,8 +111,15 @@ LOCAL(skip_efi_stack_align):
VARIABLE(grub_relocator64_rsi)
.quad 0
+#ifndef __x86_64__
+ /* movq %rax, %rsi */
+ .byte 0x48
+ .byte 0x89
+ .byte 0xc6
+#else
movq %rax, %rsi
-
+#endif
+
/* mov imm64, %rax */
.byte 0x48
.byte 0xb8
@@ -128,6 +151,14 @@ VARIABLE(grub_relocator64_rdx)
#ifdef __APPLE__
.byte 0xff, 0x25
.quad 0
+#elif !defined (__x86_64__)
+ /* jmp *LOCAL(jump_addr) (%rip) */
+ .byte 0xff
+ .byte 0x25
+ .byte 0
+ .byte 0
+ .byte 0
+ .byte 0
#else
jmp *LOCAL(jump_addr) (%rip)
#endif
--
Jan Nieuwenhuizen <janneke@gnu.org> | GNU LilyPond http://lilypond.org
Freelance IT http://JoyofSource.com | Avatar® http://AvatarAcademy.com
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