linux-user: Correct definition of stack_t

Some platforms used the wrong definition of stack_t where the flags and
size fields were swapped or where the flags field had type ulong instead
of int.

Due to the presence of padding space in the structure and the prevalence
of little-endian machines this problem went unnoticed for a long time.

The type definitions have been cross-checked with the ones defined in
the Linux kernel v5.9, plus some older versions for a few architecture
that have been removed and Xilinx's kernel fork for NiosII [1].

The bsd-user headers remain unchanged as I don't know if they are wrong
or not.

[1] https://github.com/Xilinx/linux-xlnx/blob/master/arch/nios2/include/uapi/asm/signal.h

Signed-off-by: Giuseppe Musacchio <thatlemon@gmail.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <e9d47692-ee92-009f-6007-0abc3f502b97@gmail.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>

15 files changed, 39 insertions, 40 deletions

diff --git a/linux-user/alpha/target_signal.h b/linux-user/alpha/target_signal.h
index cd63d59..b837972 100644
--- a/linux-user/alpha/target_signal.h
+++ b/linux-user/alpha/target_signal.h
@@ -42,8 +42,7 @@
 
 typedef struct target_sigaltstack {
     abi_ulong ss_sp;
-    int32_t ss_flags;
-    int32_t dummy;
+    abi_int ss_flags;
     abi_ulong ss_size;
 } target_stack_t;
 
diff --git a/linux-user/arm/target_signal.h b/linux-user/arm/target_signal.h
index ea123c4..0998dd6 100644
--- a/linux-user/arm/target_signal.h
+++ b/linux-user/arm/target_signal.h
@@ -4,9 +4,9 @@
 /* this struct defines a stack used during syscall handling */
 
 typedef struct target_sigaltstack {
-	abi_ulong ss_sp;
-	abi_long ss_flags;
-	abi_ulong ss_size;
+    abi_ulong ss_sp;
+    abi_int ss_flags;
+    abi_ulong ss_size;
 } target_stack_t;
 
 
diff --git a/linux-user/cris/target_signal.h b/linux-user/cris/target_signal.h
index 1cb5548..495a142 100644
--- a/linux-user/cris/target_signal.h
+++ b/linux-user/cris/target_signal.h
@@ -4,9 +4,9 @@
 /* this struct defines a stack used during syscall handling */
 
 typedef struct target_sigaltstack {
-	abi_ulong ss_sp;
-	abi_ulong ss_size;
-	abi_long ss_flags;
+    abi_ulong ss_sp;
+    abi_int ss_flags;
+    abi_ulong ss_size;
 } target_stack_t;
 
 
diff --git a/linux-user/hppa/target_signal.h b/linux-user/hppa/target_signal.h
index c2a0102..c52a3ea 100644
--- a/linux-user/hppa/target_signal.h
+++ b/linux-user/hppa/target_signal.h
@@ -44,7 +44,7 @@
 
 typedef struct target_sigaltstack {
     abi_ulong ss_sp;
-    int32_t ss_flags;
+    abi_int ss_flags;
     abi_ulong ss_size;
 } target_stack_t;
 
diff --git a/linux-user/i386/target_signal.h b/linux-user/i386/target_signal.h
index f55e78f..50361af 100644
--- a/linux-user/i386/target_signal.h
+++ b/linux-user/i386/target_signal.h
@@ -4,9 +4,9 @@
 /* this struct defines a stack used during syscall handling */
 
 typedef struct target_sigaltstack {
-	abi_ulong ss_sp;
-	abi_long ss_flags;
-	abi_ulong ss_size;
+    abi_ulong ss_sp;
+    abi_int ss_flags;
+    abi_ulong ss_size;
 } target_stack_t;
 
 
diff --git a/linux-user/m68k/target_signal.h b/linux-user/m68k/target_signal.h
index 314e808..d096544 100644
--- a/linux-user/m68k/target_signal.h
+++ b/linux-user/m68k/target_signal.h
@@ -4,9 +4,9 @@
 /* this struct defines a stack used during syscall handling */
 
 typedef struct target_sigaltstack {
-	abi_ulong ss_sp;
-	abi_long ss_flags;
-	abi_ulong ss_size;
+    abi_ulong ss_sp;
+    abi_int ss_flags;
+    abi_ulong ss_size;
 } target_stack_t;
 
 
diff --git a/linux-user/microblaze/target_signal.h b/linux-user/microblaze/target_signal.h
index 08bcf24..1c32629 100644
--- a/linux-user/microblaze/target_signal.h
+++ b/linux-user/microblaze/target_signal.h
@@ -4,9 +4,9 @@
 /* this struct defines a stack used during syscall handling */
 
 typedef struct target_sigaltstack {
-	abi_ulong ss_sp;
-	abi_ulong ss_size;
-	abi_long ss_flags;
+    abi_ulong ss_sp;
+    abi_int ss_flags;
+    abi_ulong ss_size;
 } target_stack_t;
 
 
diff --git a/linux-user/mips/target_signal.h b/linux-user/mips/target_signal.h
index 66e1ad4..fa4084a 100644
--- a/linux-user/mips/target_signal.h
+++ b/linux-user/mips/target_signal.h
@@ -45,9 +45,9 @@
 /* this struct defines a stack used during syscall handling */
 
 typedef struct target_sigaltstack {
-	abi_long ss_sp;
-	abi_ulong ss_size;
-	abi_long ss_flags;
+    abi_ulong ss_sp;
+    abi_ulong ss_size;
+    abi_int ss_flags;
 } target_stack_t;
 
 
diff --git a/linux-user/mips64/target_signal.h b/linux-user/mips64/target_signal.h
index 753e91f..799f7a6 100644
--- a/linux-user/mips64/target_signal.h
+++ b/linux-user/mips64/target_signal.h
@@ -45,12 +45,11 @@
 /* this struct defines a stack used during syscall handling */
 
 typedef struct target_sigaltstack {
-	abi_long ss_sp;
-	abi_ulong ss_size;
-	abi_int ss_flags;
+    abi_ulong ss_sp;
+    abi_ulong ss_size;
+    abi_int ss_flags;
 } target_stack_t;
 
-
 /*
  * sigaltstack controls
  */
diff --git a/linux-user/nios2/target_signal.h b/linux-user/nios2/target_signal.h
index fe48721..aebf749 100644
--- a/linux-user/nios2/target_signal.h
+++ b/linux-user/nios2/target_signal.h
@@ -4,11 +4,12 @@
 /* this struct defines a stack used during syscall handling */
 
 typedef struct target_sigaltstack {
-    abi_long ss_sp;
+    abi_ulong ss_sp;
+    abi_int ss_flags;
     abi_ulong ss_size;
-    abi_long ss_flags;
 } target_stack_t;
 
+
 /* sigaltstack controls  */
 #define TARGET_SS_ONSTACK     1
 #define TARGET_SS_DISABLE     2
diff --git a/linux-user/ppc/target_signal.h b/linux-user/ppc/target_signal.h
index 4453e2e..72fcdd9 100644
--- a/linux-user/ppc/target_signal.h
+++ b/linux-user/ppc/target_signal.h
@@ -4,9 +4,9 @@
 /* this struct defines a stack used during syscall handling */
 
 typedef struct target_sigaltstack {
-	abi_ulong ss_sp;
-	int ss_flags;
-	abi_ulong ss_size;
+    abi_ulong ss_sp;
+    abi_int ss_flags;
+    abi_ulong ss_size;
 } target_stack_t;
 
 
diff --git a/linux-user/s390x/target_signal.h b/linux-user/s390x/target_signal.h
index b58bc7c..bbfc464 100644
--- a/linux-user/s390x/target_signal.h
+++ b/linux-user/s390x/target_signal.h
@@ -3,7 +3,7 @@
 
 typedef struct target_sigaltstack {
     abi_ulong ss_sp;
-    int ss_flags;
+    abi_int ss_flags;
     abi_ulong ss_size;
 } target_stack_t;
 
diff --git a/linux-user/sh4/target_signal.h b/linux-user/sh4/target_signal.h
index 434970a..d7309b7 100644
--- a/linux-user/sh4/target_signal.h
+++ b/linux-user/sh4/target_signal.h
@@ -4,9 +4,9 @@
 /* this struct defines a stack used during syscall handling */
 
 typedef struct target_sigaltstack {
-	abi_ulong ss_sp;
-	abi_long ss_flags;
-	abi_ulong ss_size;
+    abi_ulong ss_sp;
+    abi_int ss_flags;
+    abi_ulong ss_size;
 } target_stack_t;
 
 
diff --git a/linux-user/sparc/target_signal.h b/linux-user/sparc/target_signal.h
index 5cc4032..1b10d14 100644
--- a/linux-user/sparc/target_signal.h
+++ b/linux-user/sparc/target_signal.h
@@ -42,9 +42,9 @@
 /* this struct defines a stack used during syscall handling */
 
 typedef struct target_sigaltstack {
-	abi_ulong ss_sp;
-	abi_long ss_flags;
-	abi_ulong ss_size;
+    abi_ulong ss_sp;
+    abi_int ss_flags;
+    abi_ulong ss_size;
 } target_stack_t;
 
 
diff --git a/linux-user/x86_64/target_signal.h b/linux-user/x86_64/target_signal.h
index 4c4380f..4ea74f2 100644
--- a/linux-user/x86_64/target_signal.h
+++ b/linux-user/x86_64/target_signal.h
@@ -4,9 +4,9 @@
 /* this struct defines a stack used during syscall handling */
 
 typedef struct target_sigaltstack {
-	abi_ulong ss_sp;
-	abi_long ss_flags;
-	abi_ulong ss_size;
+    abi_ulong ss_sp;
+    abi_int ss_flags;
+    abi_ulong ss_size;
 } target_stack_t;