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Anatoly Pugachev

2017-Dec-30 10:54 UTC

[klibc] building debug version of klibc

Hello!

Can someone please help me in building debug version of klibc ?

I've cloned git://git.kernel.org/pub/scm/libs/klibc/klibc.git  , but
failed to build it with debug info

added "-g" to HOSTCFLAGS in Makefile, but

$ make -j KLIBCKERNELSRC=`pwd`/../linux-2.6/usr

still strips every debug symbol , and i'm failed to change
scripts/Kbuild.klibc and Makefile to remove strip usage

klibc$ find . -name fstype | xargs file
./usr/kinit/fstype:               directory
./usr/kinit/fstype/static/fstype: ELF 64-bit MSB executable, SPARC V9,
relaxed memory ordering, version 1 (SYSV), statically linked, stripped
./usr/kinit/fstype/shared/fstype: ELF 64-bit MSB executable, SPARC V9,
relaxed memory ordering, version 1 (SYSV), statically linked,
interpreter /lib/klibc-M67ne2AU3wnuYln_9h2L1vfH5J0.so, stripped



I started to get segfault in fstype:

linux-2.6$ make install
...
  DEPMOD  4.15.0-rc5-00149-g5aa90a845892
sh ./arch/sparc/boot/install.sh 4.15.0-rc5-00149-g5aa90a845892
arch/sparc/boot/zImage \
        System.map "/boot"
run-parts: executing /etc/kernel/postinst.d/apt-auto-removal
4.15.0-rc5-00149-g5aa90a845892
/boot/vmlinuz-4.15.0-rc5-00149-g5aa90a845892
run-parts: executing /etc/kernel/postinst.d/initramfs-tools
4.15.0-rc5-00149-g5aa90a845892
/boot/vmlinuz-4.15.0-rc5-00149-g5aa90a845892
update-initramfs: Generating /boot/initrd.img-4.15.0-rc5-00149-g5aa90a845892
Segmentation fault
run-parts: executing /etc/kernel/postinst.d/zz-update-grub
4.15.0-rc5-00149-g5aa90a845892
/boot/vmlinuz-4.15.0-rc5-00149-g5aa90a845892

Dec 30 12:51:06 ttip kernel: fstype[162686]: segfault at 38 ip
000000008001069c (rpc 0000000080004820) sp 000007feffdf53a1 error 1 in
klibc-g_9mplOvk_73CeIA8YN-t9vhxyc.so[80000000+14000]

linux-2.6$ gdb -q -c core.164896
[New LWP 164896]
Core was generated by `/usr/lib/klibc/bin/fstype /dev/vdiska2'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  0x000000008001069c in ?? ()

linux-2.6$ $ find /usr -name fstype | xargs file
/usr/lib/klibc/bin/fstype: ELF 64-bit MSB executable, SPARC V9,
relaxed memory ordering, version 1 (SYSV), statically linked,
interpreter /lib/klibc-g_9mplOvk_73CeIA8YN-t9vhxyc.so, stripped

linux-2.6# file -s /dev/vdiska2
/dev/vdiska2: Linux rev 1.0 ext4 filesystem data,
UUID=f2eda779-5310-4af2-b48a-b43db51c0961 (needs journal recovery)
(extents) (64bit) (large files) (huge files)

$ dpkg -S /usr/lib/klibc/bin/fstype
klibc-utils: /usr/lib/klibc/bin/fstype

$ dpkg -l klibc-utils
||/ Name                               Version
Architecture           Description
+++-==================================-======================-======================-========================================================================ii
klibc-utils                        2.0.4-10               sparc64
              small utilities built with klibc for early boot


$ apt show klibc-utils
Package: klibc-utils
Version: 2.0.4-10
Priority: optional
Section: libs
Source: klibc
Maintainer: maximilian attems <maks at debian.org>
Installed-Size: 522 kB
Depends: libklibc (= 2.0.4-10)
Breaks: initramfs-tools (<< 0.123~)
Homepage: https://git.kernel.org/cgit/libs/klibc/klibc.git
Download-Size: 107 kB
APT-Manual-Installed: no
APT-Sources: http://ftp.ports.debian.org/debian-ports unstable/main
sparc64 Packages
Description: small utilities built with klibc for early boot
 This package contains a collection of programs that are linked
 against klibc. These duplicate some of the functionality of a
 regular Linux toolset, but are typically much smaller than their
 full-function counterparts.  They are intended for inclusion in
 initramfs images and embedded systems.

Sam Ravnborg

2017-Dec-30 11:30 UTC

head link

[klibc] building debug version of klibc

Hi Anatoly

On Sat, Dec 30, 2017 at 01:54:05PM +0300, Anatoly Pugachev
wrote:> Hello!
> 
> Can someone please help me in building debug version of klibc ?
> 
> I've cloned git://git.kernel.org/pub/scm/libs/klibc/klibc.git  , but
> failed to build it with debug info
> 
> added "-g" to HOSTCFLAGS in Makefile, but
HOSTCFLAGS is used when building tools running on your build machine.

Try something like this (untested, whitespace damaged):

diff --git a/scripts/Kbuild.klibc b/scripts/Kbuild.klibc
index f500d535..3e8124f7 100644
--- a/scripts/Kbuild.klibc
+++ b/scripts/Kbuild.klibc
@@ -69,7 +69,7 @@ include $(srctree)/scripts/Kbuild.include
 KLIBCREQFLAGS     := $(call cc-option, -fno-stack-protector, ) \
                      $(call cc-option, -fwrapv, )
 KLIBCARCHREQFLAGS :-KLIBCOPTFLAGS     :+KLIBCOPTFLAGS     := -g
 KLIBCWARNFLAGS    := -W -Wall -Wno-sign-compare -Wno-unused-parameter
 KLIBCSHAREDFLAGS  : KLIBCBITSIZE      :
If you use make V=1 then you should be able to see the
full gcc command line, where -g should be included with
theabove fix.

	Sam

valdis.kletnieks at vt.edu

2017-Dec-30 12:00 UTC

head link

[klibc] building debug version of klibc

On Sat, 30 Dec 2017 13:54:05 +0300, Anatoly Pugachev
said:> Hello!
>
> Can someone please help me in building debug version of klibc ?
>
> I've cloned git://git.kernel.org/pub/scm/libs/klibc/klibc.git  , but
> failed to build it with debug info
>
> added "-g" to HOSTCFLAGS in Makefile, but
Hint:  HOSTCFLAGS is applied to code that needs to run on the machine that's
doing the build, not the target code.  So for instance, if I'm
cross-compiling on
an x86_64 	for an ARM target (which I do quite a bit, building Lede router
images
for my wireless), HOSTCFLAGS is applied to any x86_64 utility code that gets
built.  I don't know what code is in klibc, but an example in the kernel
source
tree would be 'objtool' - that runs on the host system during the build,
not at runtime.
> I started to get segfault in fstype:
> linux-2.6$ make install
...>  DEPMOD  4.15.0-rc5-00149-g5aa90a845892
> sh ./arch/sparc/boot/install.sh 4.15.0-rc5-00149-g5aa90a845892
arch/sparc/boot/zImage \
>        System.map "/boot"
What directory did you do that in?  It looks like you're trying to install a
whole
new kernel image, not a new initramfs that has an updated klibc on it.
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Anatoly Pugachev

2017-Dec-30 12:00 UTC

head link

[klibc] building debug version of klibc

On Sat, Dec 30, 2017 at 2:30 PM, Sam Ravnborg <sam at ravnborg.org>
wrote:> Hi Anatoly
>
> On Sat, Dec 30, 2017 at 01:54:05PM +0300, Anatoly Pugachev wrote:
>> Hello!
>>
>> Can someone please help me in building debug version of klibc ?
>>
>> I've cloned git://git.kernel.org/pub/scm/libs/klibc/klibc.git  ,
but
>> failed to build it with debug info
>>
>> added "-g" to HOSTCFLAGS in Makefile, but
>
> HOSTCFLAGS is used when building tools running on your build machine.
>
> Try something like this (untested, whitespace damaged):
>
> diff --git a/scripts/Kbuild.klibc b/scripts/Kbuild.klibc
> index f500d535..3e8124f7 100644
> --- a/scripts/Kbuild.klibc
> +++ b/scripts/Kbuild.klibc
> @@ -69,7 +69,7 @@ include $(srctree)/scripts/Kbuild.include
>  KLIBCREQFLAGS     := $(call cc-option, -fno-stack-protector, ) \
>                       $(call cc-option, -fwrapv, )
>  KLIBCARCHREQFLAGS :> -KLIBCOPTFLAGS     :> +KLIBCOPTFLAGS     := -g
>  KLIBCWARNFLAGS    := -W -Wall -Wno-sign-compare -Wno-unused-parameter
>  KLIBCSHAREDFLAGS  :>  KLIBCBITSIZE      :>
> If you use make V=1 then you should be able to see the
> full gcc command line, where -g should be included with
> theabove fix.

Sam, thanks!
I did notice that later as well, but I've changed KLIBCCFLAGS to
include "-g" and changed strip to echo:

mator at ttip:~/klibc$ git diff
diff --git a/scripts/Kbuild.klibc b/scripts/Kbuild.klibc
index f500d535..40cbfd60 100644
--- a/scripts/Kbuild.klibc
+++ b/scripts/Kbuild.klibc
@@ -74,7 +74,7 @@ KLIBCWARNFLAGS    := -W -Wall -Wno-sign-compare
-Wno-unused-parameter
 KLIBCSHAREDFLAGS  : KLIBCBITSIZE      : KLIBCLDFLAGS      :-KLIBCCFLAGS      
:+KLIBCCFLAGS       := -g

 # Defaults for arch to override
 KLIBCARCHINCFLAGS = -I$(KLIBCKERNELOBJ)/arch/$(KLIBCARCH)/include
@@ -99,7 +99,7 @@ KLIBCAR          := $(AR)
 klibc-ar = $(KLIBCAR) $(if $(KBUILD_REPRODUCIBLE),$(2),$(1))

 KLIBCRANLIB      := $(call klibc-ar,s,Ds)
-KLIBCSTRIP       := $(STRIP)
+KLIBCSTRIP       := echo
 KLIBCNM          := $(NM)
 KLIBCOBJCOPY     := $(OBJCOPY)
 KLIBCOBJDUMP     := $(OBJDUMP)
@@ -126,7 +126,7 @@ KLIBCCPPFLAGS    += $(KLIBCDEFS)
 KLIBCCFLAGS      += $(KLIBCCPPFLAGS) $(KLIBCREQFLAGS) $(KLIBCARCHREQFLAGS)  \
                     $(KLIBCOPTFLAGS) $(KLIBCWARNFLAGS)
 KLIBCAFLAGS      += -D__ASSEMBLY__ $(KLIBCCFLAGS)
-KLIBCSTRIPFLAGS  += --strip-all -R .comment -R .note
+#KLIBCSTRIPFLAGS  += --strip-all -R .comment -R .note

 KLIBCLIBGCC_DEF  := $(shell $(KLIBCCC) $(KLIBCCFLAGS) --print-libgcc)
 KLIBCLIBGCC     ?= $(KLIBCLIBGCC_DEF)
mator at ttip:~/klibc$

this helped me to produce exec with debug info and stack trace:

(gdb) file ./usr/kinit/fstype/static/fstype
Reading symbols from ./usr/kinit/fstype/static/fstype...done.
(gdb) run
Starting program: /home/mator/klibc/usr/kinit/fstype/static/fstype

Program received signal SIGSEGV, Segmentation fault.
__syscall_common () at usr/klibc/arch/sparc64/syscall.S:15
15              st      %o0,[%g4]
(gdb) bt
#0  __syscall_common () at usr/klibc/arch/sparc64/syscall.S:15
#1  0x00000000001010d4 in identify_fs ()
#2  0x00000000001001f0 in main ()


PS: added sparclinux at vger , first thread message is
http://www.zytor.com/pipermail/klibc/2017-December/003962.html

Anatoly Pugachev

2017-Dec-30 12:05 UTC

head link

[klibc] building debug version of klibc

On Sat, Dec 30, 2017 at 3:00 PM,  <valdis.kletnieks at vt.edu>
wrote:> On Sat, 30 Dec 2017 13:54:05 +0300, Anatoly Pugachev said:
>> Hello!
>>
>> Can someone please help me in building debug version of klibc ?
>>
>> I've cloned git://git.kernel.org/pub/scm/libs/klibc/klibc.git  ,
but
>> failed to build it with debug info
>>
>> added "-g" to HOSTCFLAGS in Makefile, but
>
> Hint:  HOSTCFLAGS is applied to code that needs to run on the machine
that's
> doing the build, not the target code.  So for instance, if I'm
cross-compiling on
> an x86_64       for an ARM target (which I do quite a bit, building Lede
router images
> for my wireless), HOSTCFLAGS is applied to any x86_64 utility code that
gets
> built.  I don't know what code is in klibc, but an example in the
kernel source
> tree would be 'objtool' - that runs on the host system during the
build, not at runtime.
>
>> I started to get segfault in fstype:
>
>> linux-2.6$ make install
> ...
>>  DEPMOD  4.15.0-rc5-00149-g5aa90a845892
>> sh ./arch/sparc/boot/install.sh 4.15.0-rc5-00149-g5aa90a845892
arch/sparc/boot/zImage \
>>        System.map "/boot"
>
> What directory did you do that in?  It looks like you're trying to
install a whole
> new kernel image, not a new initramfs that has an updated klibc on it.
Valdis,

it's usual git kernel compile and install. And it's the first time I
started to get segfault from fstype.

git kernel from
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git

local directory where do i build it is ~/linux-2.6 , my own config.
Worked fine for more than 100th times.
So, i'm doing "make modules_install && make install" in
this directory
which doing right about to copy vmlinuz, System.map, kernel config
file to /boot and generate initrd there and updating boot loader
(grub2) config file.

James Clarke

2017-Dec-30 23:48 UTC

head link

[klibc] [PATCH] Fix sparc assembly when compiled as PIC

Some distributions default to PIE for their compilers, which on sparc is passed
on to the assembler. Since the behaviour of %hi/%lo changes under PIC to become
GOT offsets, the current assembly files need adapting to not try to use a GOT
offset as an absolute address.
---
 usr/include/arch/sparc/machine/asm.h     | 15 +++++++++++++--
 usr/include/arch/sparc64/machine/asm.h   |  1 +
 usr/include/arch/sparc64/machine/frame.h |  1 +
 usr/klibc/arch/sparc/pipe.S              |  6 +++---
 usr/klibc/arch/sparc/syscall.S           |  6 ++++--
 usr/klibc/arch/sparc/sysfork.S           |  6 ++++--
 usr/klibc/arch/sparc64/pipe.S            |  6 +++---
 usr/klibc/arch/sparc64/syscall.S         |  6 ++++--
 usr/klibc/arch/sparc64/sysfork.S         |  6 ++++--
 9 files changed, 37 insertions(+), 16 deletions(-)

diff --git a/usr/include/arch/sparc/machine/asm.h
b/usr/include/arch/sparc/machine/asm.h
index 04fe9b1b..fd9ef1ef 100644
--- a/usr/include/arch/sparc/machine/asm.h
+++ b/usr/include/arch/sparc/machine/asm.h
@@ -61,7 +61,7 @@
 #endif
 #define	_ASM_LABEL(name)	name
 
-#ifdef PIC
+#ifdef __PIC__
 /*
  * PIC_PROLOGUE() is akin to the compiler generated function prologue for
  * PIC code. It leaves the address of the Global Offset Table in DEST,
@@ -83,12 +83,20 @@
 0: \
 	add dest,%o7,dest; \
 	mov tmp, %o7
+#define SET(var,base,dest) \
+	sethi %gdop_hix22(var), dest; \
+	xor dest, %gdop_lox10(var), dest; \
+	ldx [base + dest], dest, %gdop(var)
 #else
 #define PIC_PROLOGUE(dest,tmp) \
 	mov %o7,tmp; 3: call 4f; nop; 4: \
 	sethi %hi(_C_LABEL(_GLOBAL_OFFSET_TABLE_)-(3b-.)),dest; \
 	or dest,%lo(_C_LABEL(_GLOBAL_OFFSET_TABLE_)-(3b-.)),dest; \
 	add dest,%o7,dest; mov tmp,%o7
+#define SET(var,base,dest) \
+	sethi %gdop_hix22(var), dest; \
+	xor dest, %gdop_lox10(var), dest; \
+	ld [base + dest], dest, %gdop(var)
 #endif
 
 /*
@@ -106,7 +114,10 @@
 #endif
 #else
 #define PIC_PROLOGUE(dest,tmp)
-#define PICCY_OFFSET(var,dest,tmp)
+#define SET(var,base,dest) \
+	sethi %hi(var), dest; \
+	or dest, %lo(var), dest
+#define PICCY_SET(var,dest,tmp) SET(var,tmp,dest)
 #endif
 
 #define FTYPE(x)		.type x, at function
diff --git a/usr/include/arch/sparc64/machine/asm.h
b/usr/include/arch/sparc64/machine/asm.h
new file mode 100644
index 00000000..394ba865
--- /dev/null
+++ b/usr/include/arch/sparc64/machine/asm.h
@@ -0,0 +1 @@
+#include "../../sparc/machine/asm.h"
diff --git a/usr/include/arch/sparc64/machine/frame.h
b/usr/include/arch/sparc64/machine/frame.h
new file mode 100644
index 00000000..79beea6d
--- /dev/null
+++ b/usr/include/arch/sparc64/machine/frame.h
@@ -0,0 +1 @@
+#include "../../sparc/machine/frame.h"
diff --git a/usr/klibc/arch/sparc/pipe.S b/usr/klibc/arch/sparc/pipe.S
index a8abf3c3..7ff09074 100644
--- a/usr/klibc/arch/sparc/pipe.S
+++ b/usr/klibc/arch/sparc/pipe.S
@@ -5,6 +5,7 @@
  * they return the two file descriptors in %o0 and %o1.
  */
 
+#include <machine/asm.h>
 #include <asm/unistd.h>
 
 	.globl	pipe
@@ -15,9 +16,8 @@ pipe:
 	or	%o0, 0, %g4
 	t	0x10
 	bcc	1f
-	  nop
-	sethi	%hi(errno), %g4
-	or	%g4, %lo(errno), %g4
+	  PIC_PROLOGUE(%g1,%g4)
+	SET(errno,%g1,%g4)
 	st	%o0,[%g4]
 	retl
 	  mov	-1, %o0
diff --git a/usr/klibc/arch/sparc/syscall.S b/usr/klibc/arch/sparc/syscall.S
index c0273f77..52a8583b 100644
--- a/usr/klibc/arch/sparc/syscall.S
+++ b/usr/klibc/arch/sparc/syscall.S
@@ -4,14 +4,16 @@
  * Common system-call stub; %g1 already set to syscall number
  */
 
+#include <machine/asm.h>
+
 	.globl	__syscall_common
 	.type	__syscall_common,#function
        	.align	4
 __syscall_common:
 	t	0x10
 	bcc	1f
-	  sethi	%hi(errno), %g4
-	or	%g4, %lo(errno), %g4
+	  PIC_PROLOGUE(%g1,%g4)
+	SET(errno,%g1,%g4)
 	st	%o0,[%g4]
 	mov	-1, %o0
 1:
diff --git a/usr/klibc/arch/sparc/sysfork.S b/usr/klibc/arch/sparc/sysfork.S
index a66c76e9..3787b944 100644
--- a/usr/klibc/arch/sparc/sysfork.S
+++ b/usr/klibc/arch/sparc/sysfork.S
@@ -8,6 +8,8 @@
  * Common system-call stub; %g1 already set to syscall number
  */
 
+#include <machine/asm.h>
+
 	.globl	__syscall_forkish
 	.type	__syscall_forkish,#function
        	.align	4
@@ -16,8 +18,8 @@ __syscall_forkish:
 	sub	%o1, 1, %o1
 	bcc,a	1f
 	  and	%o0, %o1, %o0
-	sethi	%hi(errno), %g4
-	or	%g4, %lo(errno), %g4
+	PIC_PROLOGUE(%g1,%g4)
+	SET(errno,%g1,%g4)
 	st	%o0,[%g4]
 	mov	-1, %o0
 1:
diff --git a/usr/klibc/arch/sparc64/pipe.S b/usr/klibc/arch/sparc64/pipe.S
index c63b20f7..cedc6402 100644
--- a/usr/klibc/arch/sparc64/pipe.S
+++ b/usr/klibc/arch/sparc64/pipe.S
@@ -5,6 +5,7 @@
  * they return the two file descriptors in %o0 and %o1.
  */
 
+#include <machine/asm.h>
 #include <asm/unistd.h>
 
 	.globl	pipe
@@ -15,9 +16,8 @@ pipe:
 	or	%o0, 0, %g4
 	t	0x6d
 	bcc	%xcc, 1f
-	  nop
-	sethi	%hi(errno), %g4
-	or	%g4, %lo(errno), %g4
+	  PIC_PROLOGUE(%g1,%g4)
+	SET(errno,%g1,%g4)
 	st	%o0,[%g4]
 	retl
 	  mov	-1, %o0
diff --git a/usr/klibc/arch/sparc64/syscall.S b/usr/klibc/arch/sparc64/syscall.S
index 7ab9d95f..c84c9ae5 100644
--- a/usr/klibc/arch/sparc64/syscall.S
+++ b/usr/klibc/arch/sparc64/syscall.S
@@ -4,14 +4,16 @@
  * Common system-call stub; %g1 already set to syscall number
  */
 
+#include <machine/asm.h>
+
 	.globl	__syscall_common
 	.type	__syscall_common,#function
        	.align	4
 __syscall_common:
 	t	0x6d
 	bcc	%xcc, 1f
-	  sethi	%hi(errno), %g4
-	or	%g4, %lo(errno), %g4
+	  PIC_PROLOGUE(%g1,%g4)
+	SET(errno,%g1,%g4)
 	st	%o0,[%g4]
 1:
        	retl
diff --git a/usr/klibc/arch/sparc64/sysfork.S b/usr/klibc/arch/sparc64/sysfork.S
index 2eed659e..a0c13340 100644
--- a/usr/klibc/arch/sparc64/sysfork.S
+++ b/usr/klibc/arch/sparc64/sysfork.S
@@ -8,6 +8,8 @@
  * Common system-call stub; %g1 already set to syscall number
  */
 
+#include <machine/asm.h>
+
 	.globl	__syscall_forkish
 	.type	__syscall_forkish,#function
        	.align	4
@@ -16,8 +18,8 @@ __syscall_forkish:
 	sub	%o1, 1, %o1
 	bcc,a	%xcc, 1f
 	  and	%o0, %o1, %o0
-	sethi	%hi(errno), %g4
-	or	%g4, %lo(errno), %g4
+	PIC_PROLOGUE(%g1,%g4)
+	SET(errno,%g1,%g4)
 	st	%o0, [%g4]
 	retl
 	  mov	-1, %o0
-- 
2.15.1

James Clarke

2018-Jul-18 22:11 UTC

head link

[klibc] [PATCH v2] Fix sparc assembly when compiled as PIC

Some distributions default to PIE for their compilers, which on sparc is passed
on to the assembler. Since the behaviour of %hi/%lo changes under PIC to become
GOT offsets, the current assembly files need adapting to not try to use a GOT
offset as an absolute address.
---
Changes since v1:

  * Don't put the start of PIC_PROLOGUE in the delay slot of the branch
    after the pipe syscall, since that clobbers %g4 which is used as a
    saved register on the success path.

 usr/include/arch/sparc/machine/asm.h     | 15 +++++++++++++--
 usr/include/arch/sparc64/machine/asm.h   |  1 +
 usr/include/arch/sparc64/machine/frame.h |  1 +
 usr/klibc/arch/sparc/pipe.S              |  5 +++--
 usr/klibc/arch/sparc/syscall.S           |  6 ++++--
 usr/klibc/arch/sparc/sysfork.S           |  6 ++++--
 usr/klibc/arch/sparc64/pipe.S            |  5 +++--
 usr/klibc/arch/sparc64/syscall.S         |  6 ++++--
 usr/klibc/arch/sparc64/sysfork.S         |  6 ++++--
 9 files changed, 37 insertions(+), 14 deletions(-)

diff --git a/usr/include/arch/sparc/machine/asm.h
b/usr/include/arch/sparc/machine/asm.h
index 04fe9b1b..fd9ef1ef 100644
--- a/usr/include/arch/sparc/machine/asm.h
+++ b/usr/include/arch/sparc/machine/asm.h
@@ -61,7 +61,7 @@
 #endif
 #define	_ASM_LABEL(name)	name
 
-#ifdef PIC
+#ifdef __PIC__
 /*
  * PIC_PROLOGUE() is akin to the compiler generated function prologue for
  * PIC code. It leaves the address of the Global Offset Table in DEST,
@@ -83,12 +83,20 @@
 0: \
 	add dest,%o7,dest; \
 	mov tmp, %o7
+#define SET(var,base,dest) \
+	sethi %gdop_hix22(var), dest; \
+	xor dest, %gdop_lox10(var), dest; \
+	ldx [base + dest], dest, %gdop(var)
 #else
 #define PIC_PROLOGUE(dest,tmp) \
 	mov %o7,tmp; 3: call 4f; nop; 4: \
 	sethi %hi(_C_LABEL(_GLOBAL_OFFSET_TABLE_)-(3b-.)),dest; \
 	or dest,%lo(_C_LABEL(_GLOBAL_OFFSET_TABLE_)-(3b-.)),dest; \
 	add dest,%o7,dest; mov tmp,%o7
+#define SET(var,base,dest) \
+	sethi %gdop_hix22(var), dest; \
+	xor dest, %gdop_lox10(var), dest; \
+	ld [base + dest], dest, %gdop(var)
 #endif
 
 /*
@@ -106,7 +114,10 @@
 #endif
 #else
 #define PIC_PROLOGUE(dest,tmp)
-#define PICCY_OFFSET(var,dest,tmp)
+#define SET(var,base,dest) \
+	sethi %hi(var), dest; \
+	or dest, %lo(var), dest
+#define PICCY_SET(var,dest,tmp) SET(var,tmp,dest)
 #endif
 
 #define FTYPE(x)		.type x, at function
diff --git a/usr/include/arch/sparc64/machine/asm.h
b/usr/include/arch/sparc64/machine/asm.h
new file mode 100644
index 00000000..394ba865
--- /dev/null
+++ b/usr/include/arch/sparc64/machine/asm.h
@@ -0,0 +1 @@
+#include "../../sparc/machine/asm.h"
diff --git a/usr/include/arch/sparc64/machine/frame.h
b/usr/include/arch/sparc64/machine/frame.h
new file mode 100644
index 00000000..79beea6d
--- /dev/null
+++ b/usr/include/arch/sparc64/machine/frame.h
@@ -0,0 +1 @@
+#include "../../sparc/machine/frame.h"
diff --git a/usr/klibc/arch/sparc/pipe.S b/usr/klibc/arch/sparc/pipe.S
index a8abf3c3..e278bda5 100644
--- a/usr/klibc/arch/sparc/pipe.S
+++ b/usr/klibc/arch/sparc/pipe.S
@@ -5,6 +5,7 @@
  * they return the two file descriptors in %o0 and %o1.
  */
 
+#include <machine/asm.h>
 #include <asm/unistd.h>
 
 	.globl	pipe
@@ -16,8 +17,8 @@ pipe:
 	t	0x10
 	bcc	1f
 	  nop
-	sethi	%hi(errno), %g4
-	or	%g4, %lo(errno), %g4
+	PIC_PROLOGUE(%g1,%g4)
+	SET(errno,%g1,%g4)
 	st	%o0,[%g4]
 	retl
 	  mov	-1, %o0
diff --git a/usr/klibc/arch/sparc/syscall.S b/usr/klibc/arch/sparc/syscall.S
index c0273f77..52a8583b 100644
--- a/usr/klibc/arch/sparc/syscall.S
+++ b/usr/klibc/arch/sparc/syscall.S
@@ -4,14 +4,16 @@
  * Common system-call stub; %g1 already set to syscall number
  */
 
+#include <machine/asm.h>
+
 	.globl	__syscall_common
 	.type	__syscall_common,#function
        	.align	4
 __syscall_common:
 	t	0x10
 	bcc	1f
-	  sethi	%hi(errno), %g4
-	or	%g4, %lo(errno), %g4
+	  PIC_PROLOGUE(%g1,%g4)
+	SET(errno,%g1,%g4)
 	st	%o0,[%g4]
 	mov	-1, %o0
 1:
diff --git a/usr/klibc/arch/sparc/sysfork.S b/usr/klibc/arch/sparc/sysfork.S
index a66c76e9..3787b944 100644
--- a/usr/klibc/arch/sparc/sysfork.S
+++ b/usr/klibc/arch/sparc/sysfork.S
@@ -8,6 +8,8 @@
  * Common system-call stub; %g1 already set to syscall number
  */
 
+#include <machine/asm.h>
+
 	.globl	__syscall_forkish
 	.type	__syscall_forkish,#function
        	.align	4
@@ -16,8 +18,8 @@ __syscall_forkish:
 	sub	%o1, 1, %o1
 	bcc,a	1f
 	  and	%o0, %o1, %o0
-	sethi	%hi(errno), %g4
-	or	%g4, %lo(errno), %g4
+	PIC_PROLOGUE(%g1,%g4)
+	SET(errno,%g1,%g4)
 	st	%o0,[%g4]
 	mov	-1, %o0
 1:
diff --git a/usr/klibc/arch/sparc64/pipe.S b/usr/klibc/arch/sparc64/pipe.S
index c63b20f7..cb5c2c79 100644
--- a/usr/klibc/arch/sparc64/pipe.S
+++ b/usr/klibc/arch/sparc64/pipe.S
@@ -5,6 +5,7 @@
  * they return the two file descriptors in %o0 and %o1.
  */
 
+#include <machine/asm.h>
 #include <asm/unistd.h>
 
 	.globl	pipe
@@ -16,8 +17,8 @@ pipe:
 	t	0x6d
 	bcc	%xcc, 1f
 	  nop
-	sethi	%hi(errno), %g4
-	or	%g4, %lo(errno), %g4
+	PIC_PROLOGUE(%g1,%g4)
+	SET(errno,%g1,%g4)
 	st	%o0,[%g4]
 	retl
 	  mov	-1, %o0
diff --git a/usr/klibc/arch/sparc64/syscall.S b/usr/klibc/arch/sparc64/syscall.S
index 7ab9d95f..c84c9ae5 100644
--- a/usr/klibc/arch/sparc64/syscall.S
+++ b/usr/klibc/arch/sparc64/syscall.S
@@ -4,14 +4,16 @@
  * Common system-call stub; %g1 already set to syscall number
  */
 
+#include <machine/asm.h>
+
 	.globl	__syscall_common
 	.type	__syscall_common,#function
        	.align	4
 __syscall_common:
 	t	0x6d
 	bcc	%xcc, 1f
-	  sethi	%hi(errno), %g4
-	or	%g4, %lo(errno), %g4
+	  PIC_PROLOGUE(%g1,%g4)
+	SET(errno,%g1,%g4)
 	st	%o0,[%g4]
 1:
        	retl
diff --git a/usr/klibc/arch/sparc64/sysfork.S b/usr/klibc/arch/sparc64/sysfork.S
index 2eed659e..a0c13340 100644
--- a/usr/klibc/arch/sparc64/sysfork.S
+++ b/usr/klibc/arch/sparc64/sysfork.S
@@ -8,6 +8,8 @@
  * Common system-call stub; %g1 already set to syscall number
  */
 
+#include <machine/asm.h>
+
 	.globl	__syscall_forkish
 	.type	__syscall_forkish,#function
        	.align	4
@@ -16,8 +18,8 @@ __syscall_forkish:
 	sub	%o1, 1, %o1
 	bcc,a	%xcc, 1f
 	  and	%o0, %o1, %o0
-	sethi	%hi(errno), %g4
-	or	%g4, %lo(errno), %g4
+	PIC_PROLOGUE(%g1,%g4)
+	SET(errno,%g1,%g4)
 	st	%o0, [%g4]
 	retl
 	  mov	-1, %o0
-- 
2.18.0

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