[PATCH] switch-arch: Fix recognition of x86_64 target as 64-bit

[Andreas Färber]

The comparison would've always been false due to missing $.

Signed-off-by: Andreas Färber 
---
 config/scripts/switch-arch |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/config/scripts/switch-arch b/config/scripts/switch-arch
index 8b6563d..60782e9 100755
--- a/config/scripts/switch-arch
+++ b/config/scripts/switch-arch
@@ -48,7 +48,7 @@ crosscflags()

# target long bits test
     if test "$target" = "sparc64" -o "$target" = "ia64" \
-        -o "$target" = "amd64"  -o "target" = "x86_64" \
+        -o "$target" = "amd64"  -o "$target" = "x86_64" \
         -o "$target" = "alpha"; then
         targetlongbits="64"
     else

[RFC 1/2] switch-arch: Prepare ppc64 support

[Andreas Färber]

Detect ppc64 as Big Endian and 64-bit.
Reuse arch/ppc/ wherever possible.

Signed-off-by: Andreas Färber 
---
 The -m64 is not yet working in my gcc configuration. Using -mcpu=powerpc64 instead, the C files compiled
 but despite tweaking the linker script and adding -melf64ppc to LD there was a mismatch:

powerpc-elf-ld: powerpc:common64 architecture of input file `target/arch/ppc/qemu/start.o' is incompatible with powerpc:common output
 [...]

config/scripts/switch-arch |   16 +++++++++++++++-
 1 files changed, 15 insertions(+), 1 deletions(-)

diff --git a/config/scripts/switch-arch b/config/scripts/switch-arch
index 60782e9..027632d 100755
--- a/config/scripts/switch-arch
+++ b/config/scripts/switch-arch
@@ -38,6 +38,7 @@ crosscflags()
     fi

if test "$target" = "powerpc" -o "$target" = "ppc" \
+        -o "$target" = "powerpc64" -o "$target" = "ppc64" \
         -o "$target" = "mips" -o "$target" = "s390" \
         -o "$target" = "sparc32" -o "$target" = "sparc64" \
         -o "$target" = "m68k" -o "$target" = "armv4b"; then
@@ -49,6 +50,7 @@ crosscflags()
 # target long bits test
     if test "$target" = "sparc64" -o "$target" = "ia64" \
         -o "$target" = "amd64"  -o "$target" = "x86_64" \
+        -o "$target" = "powerpc64" -o "$target" = "ppc64" \
         -o "$target" = "alpha"; then
         targetlongbits="64"
     else
@@ -139,6 +141,12 @@ for RULES_ARCH in $*; do
         AS_FLAGS=
         ;;

+        ppc64)
+        select_prefix powerpc
+        CFLAGS="-Wa,-a64 -m64 -msoft-float -fno-builtin-bcopy -fno-builtin-log2"
+        AS_FLAGS="-Wa,-a64"
+        ;;
+
         sparc32)
         select_prefix sparc
         CFLAGS="-Wa,-xarch=v8 -Wa,-32 -m32 -mcpu=supersparc -fno-builtin"
@@ -192,9 +200,15 @@ for RULES_ARCH in $*; do
     mkdir -p $OBJDIR/host/include
     mkdir -p $OBJDIR/host/kernel
     mkdir -p $OBJDIR/forth
-    ln -s ../../../include/arch/$ARCH $OBJDIR/target/include/asm
+
+    INCLUDEARCH=$ARCH
+    if test "$ARCH" = "ppc64"; then
+        INCLUDEARCH=ppc
+    fi
+    ln -s ../../../include/arch/$INCLUDEARCH $OBJDIR/target/include/asm
     #compile the host binary with target settings instead
     #ln -s ../../../include/arch/$HOSTARCH $OBJDIR/host/include/asm
+
     echo "ok."

cd $OBJDIR

[PATCH 2/2] ppc: Don't hardcode "ppc" arch for openbios-qemu.elf

[Andreas Färber]

Use $(ARCH) to allow using a different linker script for ppc64.

Signed-off-by: Andreas Färber 
---
 arch/ppc/build.xml |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/ppc/build.xml b/arch/ppc/build.xml
index 9778a43..4aec62f 100644
--- a/arch/ppc/build.xml
+++ b/arch/ppc/build.xml
@@ -178,7 +178,7 @@

<executable name="openbios-qemu.elf" target="target" condition="QEMU">
   <rule>
-	$(call quiet-command,$(LD) --warn-common -N -T $(SRCDIR)/arch/ppc/qemu/ldscript -o $@.nostrip --whole-archive $^,"  LINK  $(TARGET_DIR)$@")
+	$(call quiet-command,$(LD) --warn-common -N -T $(SRCDIR)/arch/$(ARCH)/qemu/ldscript -o $@.nostrip --whole-archive $^,"  LINK  $(TARGET_DIR)$@")
    $(call quiet-command,$(NM) $@.nostrip | sort > $(ODIR)/openbios-qemu.syms,"  GEN   $(TARGET_DIR)$@.syms")
    $(call quiet-command,$(STRIP) $@.nostrip -o $@,"  STRIP $(TARGET_DIR)$@")</rule>
   <object source="qemu/start.S"/>

[RFC 1/2] switch-arch: Prepare ppc64 support

[Blue Swirl]

On Sun, Oct 3, 2010 at 1:20 PM, Andreas Färber  wrote:
> Detect ppc64 as Big Endian and 64-bit.
> Reuse arch/ppc/ wherever possible.

Perhaps we should try to aim for unified targets, like in recent Linux
there is unified sparc32 and sparc64 tree in arch/sparc.
> Signed-off-by: Andreas Färber
>
> The -m64 is not yet working in my gcc configuration. Using -mcpu=powerpc64 instead, the C files compiled
>  but despite tweaking the linker script and adding -melf64ppc to LD there was a mismatch:
>
> powerpc-elf-ld: powerpc:common64 architecture of input file `target/arch/ppc/qemu/start.o' is incompatible with powerpc:common output

You should build binutils for powerpc64-elf.

[PATCH] switch-arch: Fix recognition of x86_64 target as 64-bit

[Blue Swirl]

Thanks, applied.

On Sun, Oct 3, 2010 at 10:54 AM, Andreas Färber  wrote:
> The comparison would've always been false due to missing $.
> Signed-off-by: Andreas Färber
>
> config/scripts/switch-arch |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
>
> diff --git a/config/scripts/switch-arch b/config/scripts/switch-arch
> index 8b6563d..60782e9 100755
> --- a/config/scripts/switch-arch
> +++ b/config/scripts/switch-arch
> @@ -48,7 +48,7 @@ crosscflags()
>
> # target long bits test
>     if test "$target" = "sparc64" -o "$target" = "ia64" \
> -o "$target" = "amd64"  -o "target" = "x86_64" \
> -o "$target" = "amd64"  -o "$target" = "x86_64" \
>
> -o "$target" = "alpha"; then
>         targetlongbits="64"
>     else
> --
> 1.7.3

[RFC 1/2] switch-arch: Prepare ppc64 support

[Andreas Färber]

Am 03.10.2010 um 16:18 schrieb Blue Swirl:
> On Sun, Oct 3, 2010 at 1:20 PM, Andreas Färber  
>  wrote:
> > The -m64 is not yet working in my gcc configuration. Using - 
> > mcpu=powerpc64 instead, the C files compiled
> >  but despite tweaking the linker script and adding -melf64ppc to LD  
> > there was a mismatch:
> >
> > powerpc-elf-ld: powerpc:common64 architecture of input file  
> > `target/arch/ppc/qemu/start.o' is incompatible with powerpc:common  
> > output
>
> You should build binutils for powerpc64-elf.

I built powerpc-elf- binutils with --enable-targets=powerpc64-elf,  
which added above elf64ppc to -V...

LD=powerpc64-elf-ld does solve the above but leaves me with:

PMG5-2:obj-ppc64 andreas$ make V=1 LD="powerpc64-elf-ld"
powerpc64-elf-ld --warn-common -N -T ../arch/ppc64/qemu/ldscript -o  
openbios-qemu.elf.nostrip --whole-archive target/arch/ppc/qemu/start.o  
target/arch/ppc/timebase.o libqemu.a libbootstrap.a libopenbios.a  
libpackages.a libdrivers.a libfs.a liblibc.a libgcc.a
target/arch/ppc/qemu/start.o: In function `vector__0x300':
/Users/andreas/QEMU/OpenBIOS/openbios/obj-ppc64/../arch/ppc/qemu/ 
start.S:209: relocation truncated to fit: R_PPC64_ADDR24 against  
`.text.vectors'+c
target/arch/ppc/qemu/start.o: In function `vector__0x400':
/Users/andreas/QEMU/OpenBIOS/openbios/obj-ppc64/../arch/ppc/qemu/ 
start.S:217: relocation truncated to fit: R_PPC64_ADDR24 against  
`.text.vectors'+c
make: *** [openbios-qemu.elf] Error 1

ldscript is unchanged except for the output format.

Andreas

[RFC 1/2] switch-arch: Prepare ppc64 support

[Segher Boessenkool]

> > Â The -m64 is not yet working in my gcc configuration. Using
> > -mcpu=powerpc64 instead, the C files compiled

They compiled as 32-bit objects, that's no good.
> > Â but despite tweaking the linker script and adding -melf64ppc to LD
> > there was a mismatch:
> >
> > Â powerpc-elf-ld: powerpc:common64 architecture of input file
> > `target/arch/ppc/qemu/start.o' is incompatible with powerpc:common
> > output
>
> You should build binutils for powerpc64-elf.

Or enable 64-bit target support in binutils.  It sounds like
the linker script does OUTPUT_ARCH(powerpc:common); fix that?

Segher

[RFC 1/2] switch-arch: Prepare ppc64 support

[Andreas Färber]

Am 04.10.2010 um 06:08 schrieb Segher Boessenkool:
> > > Â The -m64 is not yet working in my gcc configuration. Using
> > > -mcpu=powerpc64 instead, the C files compiled
>
> They compiled as 32-bit objects, that's no good.
> > > Â but despite tweaking the linker script and adding -melf64ppc to LD
> > > there was a mismatch:
> > >
> > > Â powerpc-elf-ld: powerpc:common64 architecture of input file
> > > `target/arch/ppc/qemu/start.o' is incompatible with powerpc:common
> > > output
> >
> > You should build binutils for powerpc64-elf.
>
> Or enable 64-bit target support in binutils.  It sounds like
> the linker script does OUTPUT_ARCH(powerpc:common); fix that?

For the record, the linker script had OUTPUT_ARCH(powerpc), changing  
that to OUTPUT_ARCH(powerpc:common64) helped. Thanks for pointing me  
in the right direction.

Andreas

[PATCH 2/2] ppc: Don't hardcode "ppc" arch for openbios-qemu.elf

[Andreas Färber]

Am 03.10.2010 um 15:20 schrieb Andreas Färber:
> Use $(ARCH) to allow using a different linker script for ppc64.
>
> Signed-off-by: Andreas Färber

Applied updated versions of these two in r927-r929.