On Mon, Aug 04, 2008 at 08:51:25AM -0400, Pavel Roskin wrote:
> On Mon, 2008-08-04 at 11:16 +0200, Robert Millan wrote:
>
> > Furthermore, I had a look and some of the x86_64 versions are just stubs
> > that
> > include the i386 one.
> >
> > Why don't we handle this like Linux? They ship a single directory and use
> > #ifdefs where appropiate. That enforces consistency in the dir layout.
>
> I think we can do it. i386 and x86_64 could be joined into one "x86"
> architecture with common headers and sources. Perhaps the users should
> still use i386 and x86_64 in configure, but the code should be mostly
> common.
I gave a try at this, which I haven't completed yet. Here's what I have
so far.
The biggest stumbling block seems to be that autoconf doesn't make it easy
to do AC_CHECK_SIZEOF checks for standard compiling and cross-compiling in
the same run (it does support cross-compiling though).
I haven't found a way to do it. If I modify types.m4 to export its
findings to a variable instead of dumping them to config.h directly,
further calls to the same check won't return different results, even if
CC / CFLAGS has been adjusted.
--
Robert Millan
The DRM opt-in fallacy: "Your data belongs to us. We will decide when (and
how) you may access your data; but nobody's threatening your freedom: we
still allow you to remove your data and not access it at all."
Index: conf/i386-efi.rmk
===================================================================
--- conf/i386-efi.rmk (revision 1787)
+++ conf/i386-efi.rmk (working copy)
@@ -1,8 +1,8 @@
# -*- makefile -*-
-COMMON_ASFLAGS = -nostdinc -fno-builtin -m32
-COMMON_CFLAGS = -fno-builtin -m32
-COMMON_LDFLAGS = -melf_i386 -nostdlib
+COMMON_ASFLAGS = -nostdinc -fno-builtin
+COMMON_CFLAGS = -fno-builtin
+COMMON_LDFLAGS = -nostdlib
# Used by various components. These rules need to precede them.
normal/lexer.c_DEPENDENCIES = grub_script.tab.h
Index: configure.ac
===================================================================
--- configure.ac (revision 1787)
+++ configure.ac (working copy)
@@ -75,7 +75,6 @@
# Adjust CPU unless target was explicitly specified.
if test -z "$target_alias"; then
case "$target_cpu"-"$platform" in
- x86_64-efi) ;;
x86_64-*) target_cpu=i386 ;;
powerpc64-ieee1275) target_cpu=powerpc ;;
esac
@@ -84,21 +83,15 @@
# Check if the platform is supported, make final adjustments.
case "$target_cpu"-"$platform" in
i386-efi) ;;
- x86_64-efi) ;;
- i386-pc) ;;
- i386-coreboot) ;;
- i386-linuxbios) platform=coreboot ;;
- i386-ieee1275) ;;
+ i386-pc) target_m32=1 ;;
+ i386-coreboot) target_m32=1 ;;
+ i386-linuxbios) target_m32=1 ; platform=coreboot ;;
+ i386-ieee1275) target_m32=1 ;;
powerpc-ieee1275) ;;
sparc64-ieee1275) ;;
*) AC_MSG_ERROR([platform "$platform" is not supported for target CPU "$target_cpu"]) ;;
esac
-case "$target_cpu" in
- i386 | powerpc) target_m32=1 ;;
- x86_64 | sparc64) target_m64=1 ;;
-esac
-
AC_SUBST(target_cpu)
AC_SUBST(platform)
Index: include/grub/i386/setjmp.h
===================================================================
--- include/grub/i386/setjmp.h (revision 1787)
+++ include/grub/i386/setjmp.h (working copy)
@@ -19,10 +19,19 @@
#ifndef GRUB_SETJMP_CPU_HEADER
#define GRUB_SETJMP_CPU_HEADER 1
-typedef unsigned long grub_jmp_buf[6];
+typedef unsigned long grub_jmp_buf[8];
+#ifdef __x86_64__
+
+int grub_setjmp (grub_jmp_buf env);
+void grub_longjmp (grub_jmp_buf env, int val) __attribute__ ((noreturn));
+
+#else
+
int grub_setjmp (grub_jmp_buf env) __attribute__ ((cdecl, regparm (3)));
void grub_longjmp (grub_jmp_buf env, int val) __attribute__ ((noreturn, cdecl,
regparm (3)));
+#endif
+
#endif /* ! GRUB_SETJMP_CPU_HEADER */
Index: include/grub/i386/types.h
===================================================================
--- include/grub/i386/types.h (revision 1787)
+++ include/grub/i386/types.h (working copy)
@@ -19,12 +19,24 @@
#ifndef GRUB_TYPES_CPU_HEADER
#define GRUB_TYPES_CPU_HEADER 1
+#ifdef __i386__
+
/* The size of void *. */
#define GRUB_TARGET_SIZEOF_VOID_P 4
/* The size of long. */
#define GRUB_TARGET_SIZEOF_LONG 4
+#else
+
+/* The size of void *. */
+#define GRUB_TARGET_SIZEOF_VOID_P 8
+
+/* The size of long. */
+#define GRUB_TARGET_SIZEOF_LONG 8
+
+#endif
+
/* i386 is little-endian. */
#undef GRUB_TARGET_WORDS_BIGENDIAN
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