kumquat-buildroot/package/qemu/0001-user-exec-fix-usage-of-mcontext-structure-on-ARM-uCl.patch
Romain Naour 58af9a70cc package/qemu: remove csky fork
We have a qemu fork for csky cpus [1] but since qemu version
bump to 4.2.0 [2] and libssh2/libssh change the csky build is
broken.

The csky fork is based on Qemu 3.0.0 but unlike autotools packages
any unknown option is handled as error.

Since we don't want to support all options from previous qemu
release and the github repository has been removed [3] and the
only remaining archive is located on http://sources.buildroot.net,
remove the qemu csky fork as suggested by [4].

[1] https://git.buildroot.net/buildroot/commit/?id=f816e5b276f1ef15840bec6667f1e8219717ab7d
[2] https://git.buildroot.net/buildroot/commit/?id=0ea17054ce7dfc54efca5634133cef786445e7b1
[3] https://github.com/c-sky/qemu
[4] http://lists.busybox.net/pipermail/buildroot/2020-May/281885.html

Signed-off-by: Romain Naour <romain.naour@gmail.com>
Cc: Guo Ren <ren_guo@c-sky.com>
Cc: Peter Korsgaard <peter@korsgaard.com>
[Peter: move patches out of 4.2.0 subdir]
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
2020-05-25 22:52:53 +02:00

36 lines
1.3 KiB
Diff

From d3f1e7e9ff9aae3f770b0bcb9aa3c2f787f76a1b Mon Sep 17 00:00:00 2001
From: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Date: Fri, 5 May 2017 09:07:15 +0200
Subject: [PATCH] user-exec: fix usage of mcontext structure on ARM/uClibc
user-exec.c has some conditional code to decide how to use the
mcontext structure. Unfortunately, since uClibc defines __GLIBC__, but
with old versions of __GLIBC__ and __GLIBC_MINOR__, an old code path
gets used, which doesn't apply to uClibc.
Fix this by excluding __UCLIBC__, which ensures we fall back to the
general case of using uc_mcontext.arm_pc, which works fine with
uClibc.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
---
user-exec.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/accel/tcg/user-exec.c b/accel/tcg/user-exec.c
index 6db0758..2b3d116 100644
--- a/accel/tcg/user-exec.c
+++ b/accel/tcg/user-exec.c
@@ -506,7 +506,7 @@ int cpu_signal_handler(int host_signum, void *pinfo,
#if defined(__NetBSD__)
pc = uc->uc_mcontext.__gregs[_REG_R15];
-#elif defined(__GLIBC__) && (__GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ <= 3))
+#elif defined(__GLIBC__) && !defined(__UCLIBC__) && (__GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ <= 3))
pc = uc->uc_mcontext.gregs[R15];
#else
pc = uc->uc_mcontext.arm_pc;
--
2.7.4