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[Qemu-trivial] [PATCH trivial] linux-user: enable sigaltstack for all ar

From: Michael Tokarev
Subject: [Qemu-trivial] [PATCH trivial] linux-user: enable sigaltstack for all architectures
Date: Tue, 29 Dec 2015 12:51:13 +0300

There is no reason to limit sigaltstack syscall to just a few
architectures and pretend it is not implemented for others.

If some architecture is not ready for this, that architecture
should be fixed instead.

This fixes LP#1516408.

Signed-off-by: Michael Tokarev <address@hidden>
This patch depends on a previous patch I sent, "unicore32: convert
get_sp_from_cpustate from macro to inline", or else unicore32-user
wont build.
 linux-user/syscall.c | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 6c64ba6..3ceb3e2 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -8292,14 +8292,8 @@ abi_long do_syscall(void *cpu_env, int num, abi_long 
     case TARGET_NR_sigaltstack:
-#if defined(TARGET_I386) || defined(TARGET_ARM) || defined(TARGET_MIPS) || \
-    defined(TARGET_SPARC) || defined(TARGET_PPC) || defined(TARGET_ALPHA) || \
-    defined(TARGET_M68K) || defined(TARGET_S390X) || defined(TARGET_OPENRISC)
         ret = do_sigaltstack(arg1, arg2, get_sp_from_cpustate((CPUArchState 
-        goto unimplemented;
     case TARGET_NR_sendfile:

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