diff mbox

jack2: Try better fix for NGREG problem

Message ID 1479739795-31046-1-git-send-email-abrodkin@synopsys.com
State Superseded
Headers show

Commit Message

Alexey Brodkin Nov. 21, 2016, 2:49 p.m. UTC 
After quite some time trying this and that we seem to have no
better solution than proposed by Thomas back in the day [1].

The solution in question is to check [during jack2 configuration]
if NGREG is exposed via ucontext.h and then use its value in
source code later on. This replaces long and still growing list
of architectures for which we explicitly escape usage of NGREG.

Just for reference [2] is my attempt to fix in in the other
supposedly better way but with no luck because of the mess in
kernel's UAPI headers.

[1] http://lists.busybox.net/pipermail/buildroot/2016-May/161785.html
[2] http://lists.busybox.net/pipermail/buildroot/2016-June/162461.html

Still not sure if that works for every other architectures, so testing
and Acks from all interested parties are much appreciated.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Cc: Bernd Kuhls <bernd.kuhls@t-online.de>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: Arnout Vandecappelle <arnout@mind.be>
Cc: Waldemar Brodkorb <wbx@openadk.org>
---
 package/jack2/0001-Add-support-for-nios2.patch     | 34 --------------
 .../jack2/0004-Add-check-for-the-NGREG-macro.patch | 52 ++++++++++++++++++++++
 2 files changed, 52 insertions(+), 34 deletions(-)
 delete mode 100644 package/jack2/0001-Add-support-for-nios2.patch
 create mode 100644 package/jack2/0004-Add-check-for-the-NGREG-macro.patch

Comments

Thomas Petazzoni Dec. 17, 2016, 4:22 p.m. UTC | #1 
Hello,

On Mon, 21 Nov 2016 17:49:55 +0300, Alexey Brodkin wrote:
> After quite some time trying this and that we seem to have no
> better solution than proposed by Thomas back in the day [1].
> 
> The solution in question is to check [during jack2 configuration]
> if NGREG is exposed via ucontext.h and then use its value in
> source code later on. This replaces long and still growing list
> of architectures for which we explicitly escape usage of NGREG.
> 
> Just for reference [2] is my attempt to fix in in the other
> supposedly better way but with no luck because of the mess in
> kernel's UAPI headers.
> 
> [1] http://lists.busybox.net/pipermail/buildroot/2016-May/161785.html
> [2] http://lists.busybox.net/pipermail/buildroot/2016-June/162461.html
> 
> Still not sure if that works for every other architectures, so testing
> and Acks from all interested parties are much appreciated.

I have submitted an improved version of this:

  https://patchwork.ozlabs.org/patch/706714/

Best regards,

Thomas
Alexey Brodkin Dec. 19, 2016, 3:57 p.m. UTC | #2 
Hi Thomas,

On Sat, 2016-12-17 at 17:22 +0100, Thomas Petazzoni wrote:
> Hello,

> 

> On Mon, 21 Nov 2016 17:49:55 +0300, Alexey Brodkin wrote:

> > 

> > After quite some time trying this and that we seem to have no

> > better solution than proposed by Thomas back in the day [1].

> > 

> > The solution in question is to check [during jack2 configuration]

> > if NGREG is exposed via ucontext.h and then use its value in

> > source code later on. This replaces long and still growing list

> > of architectures for which we explicitly escape usage of NGREG.

> > 

> > Just for reference [2] is my attempt to fix in in the other

> > supposedly better way but with no luck because of the mess in

> > kernel's UAPI headers.

> > 

> > [1] https://urldefense.proofpoint.com/v2/url?u=http-3A__lists.busybox.net_pipermail_buildroot_2016-2DMay_161785.html

> > &d=DgICAg&c=DPL6_X_6JkXFx7AXWqB0tg&r=lqdeeSSEes0GFDDl656eViXO7breS55ytWkhpk5R81I&m=lO-

> > pWm8TsFCI8LpRpFt8VMDAaoxteVHDKeXx2lKUc6M&s=nQ80Ho3tQdAjjk76kuGcuhh_PBE9EAEFNOpYeQIryrk&e= 

> > [2] https://urldefense.proofpoint.com/v2/url?u=http-3A__lists.busybox.net_pipermail_buildroot_2016-2DJune_162461.htm

> > l&d=DgICAg&c=DPL6_X_6JkXFx7AXWqB0tg&r=lqdeeSSEes0GFDDl656eViXO7breS55ytWkhpk5R81I&m=lO-

> > pWm8TsFCI8LpRpFt8VMDAaoxteVHDKeXx2lKUc6M&s=37fBEUzi8Cri1lFd5OsOcCvWM_MYPDctH0kR9fYlTRM&e= 

> > 

> > Still not sure if that works for every other architectures, so testing

> > and Acks from all interested parties are much appreciated.

> 

> I have submitted an improved version of this:


Thanks for doing that!
Let's see if Jack2 appears in Autobuilder failures again now.

-Alexey
Thomas Petazzoni Dec. 19, 2016, 4:23 p.m. UTC | #3 
Hello,

On Mon, 19 Dec 2016 15:57:09 +0000, Alexey Brodkin wrote:

> > > Still not sure if that works for every other architectures, so testing
> > > and Acks from all interested parties are much appreciated.  
> > 
> > I have submitted an improved version of this:  
> 
> Thanks for doing that!
> Let's see if Jack2 appears in Autobuilder failures again now.

I haven't applied the patch yet, so it's not going to fix autobuilder
issues for the moment.

I was waiting for some review before applying the patch.

Best regards,

Thomas
diff mbox

Patch

diff --git a/package/jack2/0001-Add-support-for-nios2.patch b/package/jack2/0001-Add-support-for-nios2.patch
deleted file mode 100644
index f6d60af..0000000
--- a/package/jack2/0001-Add-support-for-nios2.patch
+++ /dev/null
@@ -1,34 +0,0 @@ 
-From 3651f95d0433c84d2b67e30e68dd6140585535b0 Mon Sep 17 00:00:00 2001
-From: Bernd Kuhls <bernd.kuhls@t-online.de>
-Date: Tue, 19 Apr 2016 19:32:35 +0200
-Subject: [PATCH 1/1] Add support for nios2
-
-When compiling jack on nios2, compilation fails because NGREGS is not
-defined. Since this is only for debug output on segmentation faults, stub
-the debug print out like it's been done for other platforms before.
-
-Inspired by
-https://github.com/jackaudio/jack2/commit/d11bb095291d8880508c87adfe625bf2bcab1456
-
-Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
-[Patch sent upstream: https://github.com/jackaudio/jack2/pull/199]
----
- dbus/sigsegv.c | 2 +-
- 1 file changed, 1 insertion(+), 1 deletion(-)
-
-diff --git a/dbus/sigsegv.c b/dbus/sigsegv.c
-index 64c3986..ee12f91 100644
---- a/dbus/sigsegv.c
-+++ b/dbus/sigsegv.c
-@@ -104,7 +104,7 @@ static void signal_segv(int signum, siginfo_t* info, void*ptr) {
-     jack_error("info.si_errno = %d", info->si_errno);
-     jack_error("info.si_code  = %d (%s)", info->si_code, si_code_str);
-     jack_error("info.si_addr  = %p", info->si_addr);
--#if !defined(__alpha__) && !defined(__ia64__) && !defined(__FreeBSD_kernel__) && !defined(__arm__) && !defined(__hppa__) && !defined(__sh__) && !defined(__aarch64__)
-+#if !defined(__alpha__) && !defined(__ia64__) && !defined(__FreeBSD_kernel__) && !defined(__arm__) && !defined(__hppa__) && !defined(__sh__) && !defined(__aarch64__) && !defined(nios2)
-     for(i = 0; i < NGREG; i++)
-         jack_error("reg[%02d]       = 0x" REGFORMAT, i, 
- #if defined(__powerpc64__)
--- 
-2.8.0.rc3
-
diff --git a/package/jack2/0004-Add-check-for-the-NGREG-macro.patch b/package/jack2/0004-Add-check-for-the-NGREG-macro.patch
new file mode 100644
index 0000000..36190ce
--- /dev/null
+++ b/package/jack2/0004-Add-check-for-the-NGREG-macro.patch
@@ -0,0 +1,52 @@ 
+From 754205cfccc7b28732c2a952a14d1434b67eb074 Mon Sep 17 00:00:00 2001
+From: Thomas Petazzoni <thomas.petazzoni at free-electrons.com>
+Date: Mon, 23 May 2016 22:28:12 +0200
+Subject: [PATCH] Add check for the NGREG macro
+
+The NGREG macro is not available on all CPU architectures. Rather than
+making a long list of exclusions longer and longer, add a waf check to
+test for its functionality.
+
+Signed-off-by: Thomas Petazzoni <thomas.petazzoni at free-electrons.com>
+---
+ dbus/sigsegv.c | 4 ++--
+ wscript        | 2 ++
+ 2 files changed, 4 insertions(+), 2 deletions(-)
+
+diff --git a/dbus/sigsegv.c b/dbus/sigsegv.c
+index df2c42c..35c5151 100644
+--- a/dbus/sigsegv.c
++++ b/dbus/sigsegv.c
+@@ -106,7 +106,7 @@ static void signal_segv(int signum, siginfo_t* info, void*ptr) {
+     jack_error("info.si_errno = %d", info->si_errno);
+     jack_error("info.si_code  = %d (%s)", info->si_code, si_code_str);
+     jack_error("info.si_addr  = %p", info->si_addr);
+-#if !defined(__alpha__) && !defined(__ia64__) && !defined(__FreeBSD_kernel__) && !defined(__arm__) && !defined(__hppa__) && !defined(__sh__) && !defined(__aarch64__)
++#if HAVE_NGREG
+     for(i = 0; i < NGREG; i++)
+         jack_error("reg[%02d]       = 0x" REGFORMAT, i, 
+ #if defined(__powerpc64__)
+@@ -119,7 +119,7 @@ static void signal_segv(int signum, siginfo_t* info, void*ptr) {
+                 ucontext->uc_mcontext.gregs[i]
+ #endif
+                 );
+-#endif /* alpha, ia64, kFreeBSD, arm, hppa */
++#endif /* NGREG */
+ 
+ #if defined(SIGSEGV_STACK_X86) || defined(SIGSEGV_STACK_IA64)
+ # if defined(SIGSEGV_STACK_IA64)
+diff --git a/wscript b/wscript
+index 63ba3aa..a0838b0 100644
+--- a/wscript
++++ b/wscript
+@@ -168,6 +168,8 @@ def configure(conf):
+ 
+     conf.check_cc(header_name='execinfo.h', define_name="HAVE_EXECINFO_H", mandatory=False)
+     conf.check_cc(header_name='samplerate.h', define_name="HAVE_SAMPLERATE")
++    conf.check_cc(fragment="#include <ucontext.h>\nint main() { return NGREG; }\n",
++                  define_name="HAVE_NGREG", mandatory=False)
+ 
+     if conf.is_defined('HAVE_SAMPLERATE'):
+         conf.env['LIB_SAMPLERATE'] = ['samplerate']
+-- 
+2.7.4