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package/libcap: backport upstream patch to fix build on Xtensa

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Following the bump of libcap to version 2.76 in commit
e2eb2ee58b, the build started failing on
Xtensa. The bug was reported upstream at
https://bugzilla.kernel.org/show_bug.cgi?id=219915 and was
subsequently fixed by upstream commit:

  https://git.kernel.org/pub/scm/libs/libcap/libcap.git/commit/?id=6cdd8cd72ebcedd6b1b6c989a7e5722d5d87f35c

Which we backport in this commit.

Fixes:

  https://autobuild.buildroot.org/results/b9ff9258f407898eeee80dd8cc4dd1d777f44c06

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Julien Olivain <ju.o@free.fr>
This commit is contained in:
Thomas Petazzoni
2025-05-16 13:46:25 +02:00
committed by Julien Olivain
parent 45439ae262
commit b473d99416
1 changed files with 65 additions and 0 deletions
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65
package/libcap/0002-Support-for-__xtensa__-architecture.patch Normal file
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@@ -0,0 +1,65 @@
From 9421f4ff93c341482d3aa4a0cd57aba1978bdd62 Mon Sep 17 00:00:00 2001
From: "Andrew G. Morgan" <morgan@kernel.org>
Date: Sat, 19 Apr 2025 08:00:23 -0700
Subject: [PATCH] Support for __xtensa__ architecture.
It looks like __xtensa__ defines SA_RESTORER, but my read of the
kernel code suggests that signal handling does not require it be
set. Specifically, if the SA_RESTORER flag is not set, the kernel
inserts a sys_rt_sigreturn call into the stack frame.
Signed-off-by: Andrew G. Morgan <morgan@kernel.org>
Upstream: 6cdd8cd72ebcedd6b1b6c989a7e5722d5d87f35c
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
---
psx/psx_calls.c | 13 +++++++------
1 file changed, 7 insertions(+), 6 deletions(-)
diff --git a/psx/psx_calls.c b/psx/psx_calls.c
index 8195964..aff105f 100644
--- a/psx/psx_calls.c
+++ b/psx/psx_calls.c
@@ -49,7 +49,8 @@
|| defined(__powerpc__) || defined(__s390__) || defined(__riscv) \
|| defined(__alpha__) || defined(__hppa__) || defined(__sh__) \
|| defined(__m68k__) || defined(__sparc__) || defined(__arc__) \
- || defined(__microblaze__) || defined(__or1k__)
+ || defined(__microblaze__) || defined(__or1k__) \
+ || defined(__xtensa__)
#undef _NSIG
#undef _NSIG_BPW
@@ -69,8 +70,7 @@
#define _NSIG_WORDS (_NSIG / _NSIG_BPW)
#if defined(__x86_64__) || defined(__i386__) \
- || defined(__arm__) \
- || defined(__powerpc__) \
+ || defined(__arm__) || defined(__powerpc__) \
|| defined(__arc__)
/* field used */
#define SA_RESTORER 0x04000000
@@ -78,8 +78,9 @@
#if defined(SA_RESTORER) \
|| defined(__aarch64__) \
- || defined(__m68k__) || defined(__sh__) || defined(__sparc__) \
- || defined(__s390__) || defined(__sparc__)
+ || defined(__m68k__) || defined(__sh__) \
+ || defined(__s390__) || defined(__sparc__) \
+ || defined(__xtensa__)
/* field defined */
#define _HAS_SA_RESTORER void *sa_restorer;
#else
@@ -93,7 +94,7 @@ typedef struct {
#define sigset_t psx_sigset_t
struct psx_sigaction {
-#if defined(__m68k__) || defined(__alpha__)
+#if defined(__m68k__) || defined(__alpha__) || defined(__xtensa__)
void *sa_handler;
sigset_t sa_mask;
unsigned long sa_flags;
--
2.49.0