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[Qemu-devel] [PULL 1/3] linux-user: Fix structure target_ucontext for MI

From: Laurent Vivier
Subject: [Qemu-devel] [PULL 1/3] linux-user: Fix structure target_ucontext for MIPS
Date: Wed, 17 Jul 2019 16:54:16 +0200

From: Aleksandar Markovic <address@hidden>

Structure ucontext for MIPS is defined in the following way in
Linux kernel:

(arch/mips/include/uapi/asm/ucontext.h, lines 54-64)

struct ucontext {
    /* Historic fields matching asm-generic */
    unsigned long       uc_flags;
    struct ucontext     *uc_link;
    stack_t             uc_stack;
    struct sigcontext   uc_mcontext;
    sigset_t            uc_sigmask;

    /* Extended context structures may follow ucontext */
    unsigned long long  uc_extcontext[0];

Fix the structure target_ucontext for MIPS to reflect the definition
above, except the correction for field uc_extcontext, which will
follow at some later time.

Fixes: 94c5495d

Reported-by: Dragan Mladjenovic <address@hidden>
Signed-off-by: Aleksandar Markovic <address@hidden>
Reviewed-by: Laurent Vivier <address@hidden>
Message-Id: <address@hidden>
Signed-off-by: Laurent Vivier <address@hidden>
 linux-user/mips/signal.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/linux-user/mips/signal.c b/linux-user/mips/signal.c
index 6aa303ec9c16..455a8a229a83 100644
--- a/linux-user/mips/signal.c
+++ b/linux-user/mips/signal.c
@@ -71,10 +71,9 @@ struct sigframe {
 struct target_ucontext {
-    target_ulong tuc_flags;
-    target_ulong tuc_link;
+    abi_ulong tuc_flags;
+    abi_ulong tuc_link;
     target_stack_t tuc_stack;
-    target_ulong pad0;
     struct target_sigcontext tuc_mcontext;
     target_sigset_t tuc_sigmask;

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