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authorAdhemerval Zanella <adhemerval.zanella@linaro.com>2015-10-17 16:56:27 -0300
committerAdhemerval Zanella <adhemerval.zanella@linaro.org>2015-12-17 18:16:59 -0200
commitfc48bfbc796e3825b6048df9146ce91c0baec0c8 (patch)
tree56c6a81e4e88e8bd6764fdaa4cc6f3d13d28928e
parent8ead7a9b94a085e6fba69b8b22e2ba0e2677f0d5 (diff)
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Fix SYSCALL_CANCEL for empty argumetns
This patch fixes the SYSCALL_CANCEL macro for usage with zero argument number (for instance SYSCALL_CANCEL (pause)) using a similar approach used for SOCKETCALL_CANCEL. GLIBC build still does not hit this issue still since SYSCALL_CANCEL is not currently being used for zero arguments calls. Tested on i386, x86_64, powerpc64le, aarch64. * sysdeps/unix/sysdep.h (SYSCALL_CANCEL): Fix macro for zero argument syscalls. (__SYSCALL0): New macro. (__SYSCALL1): Likewise. (__SYSCALL2): Likewise. (__SYSCALL3): Likewise. (__SYSCALL4): Likewise. (__SYSCALL5): Likewise. (__SYSCALL6): Likewise. (__SYSCALL7): Likewise. (__SYSCALL_CONCAT_X): Likewise. (__SYSCALL_CONCAT): Likewise. (__SYSCALL_DIST): Likewise. (__SYSCALL_CALL): Likewise.
-rw-r--r--ChangeLog17
-rw-r--r--sysdeps/unix/sysdep.h36
2 files changed, 45 insertions, 8 deletions
diff --git a/ChangeLog b/ChangeLog
index 9a32440..722aecb 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,19 @@
+2015-12-17 Adhemerval Zanella <adhemerval.zanella@linaro.org>
+
+ * sysdeps/unix/sysdep.h (SYSCALL_CANCEL): Fix macro for zero argument
+ syscalls.
+ (__SYSCALL0): New macro.
+ (__SYSCALL1): Likewise.
+ (__SYSCALL2): Likewise.
+ (__SYSCALL3): Likewise.
+ (__SYSCALL4): Likewise.
+ (__SYSCALL5): Likewise.
+ (__SYSCALL6): Likewise.
+ (__SYSCALL_CONCAT_X): Likewise.
+ (__SYSCALL_CONCAT): Likewise.
+ (__SYSCALL_DIST): Likewise.
+ (__SYSCALL_CALL): Likewise.
+
2015-12-17 H.J. Lu <hongjiu.lu@intel.com>
[BZ #19363]
@@ -5,6 +21,7 @@
2015-12-17 Adhemerval Zanella <adhemerval.zanella@linaro.org>
+ [BZ #19375]
* sysdeps/powerpc/power7/fpu/s_logb.c (__logb): Fix return for
negative subnormals.
diff --git a/sysdeps/unix/sysdep.h b/sysdeps/unix/sysdep.h
index 52dad58..5c8208f 100644
--- a/sysdeps/unix/sysdep.h
+++ b/sysdeps/unix/sysdep.h
@@ -24,22 +24,42 @@
#define SYSCALL__(name, args) PSEUDO (__##name, name, args)
#define SYSCALL(name, args) PSEUDO (name, name, args)
-/* Cancellation macros. */
-#define __SYSCALL_NARGS_X(a,b,c,d,e,f,g,n,...) n
+#define __SYSCALL0(name) \
+ INLINE_SYSCALL (name, 0)
+#define __SYSCALL1(name, a1) \
+ INLINE_SYSCALL (name, 1, a1)
+#define __SYSCALL2(name, a1, a2) \
+ INLINE_SYSCALL (name, 2, a1, a2)
+#define __SYSCALL3(name, a1, a2, a3) \
+ INLINE_SYSCALL (name, 3, a1, a2, a3)
+#define __SYSCALL4(name, a1, a2, a3, a4) \
+ INLINE_SYSCALL (name, 4, a1, a2, a3, a4)
+#define __SYSCALL5(name, a1, a2, a3, a4, a5) \
+ INLINE_SYSCALL (name, 5, a1, a2, a3, a4, a5)
+#define __SYSCALL6(name, a1, a2, a3, a4, a5, a6) \
+ INLINE_SYSCALL (name, 6, a1, a2, a3, a4, a5, a6)
+#define __SYSCALL7(name, a1, a2, a3, a4, a5, a6, a7) \
+ INLINE_SYSCALL (name, 7, a1, a2, a3, a4, a5, a6, a7)
+
+#define __SYSCALL_NARGS_X(a,b,c,d,e,f,g,h,n,...) n
#define __SYSCALL_NARGS(...) \
- __SYSCALL_NARGS_X (__VA_ARGS__, 7, 6, 5, 4, 3, 2, 1, 0,)
+ __SYSCALL_NARGS_X (__VA_ARGS__,7,6,5,4,3,2,1,0,)
+#define __SYSCALL_CONCAT_X(a,b) a##b
+#define __SYSCALL_CONCAT(a,b) __SYSCALL_CONCAT_X (a, b)
+#define __SYSCALL_DISP(b,...) \
+ __SYSCALL_CONCAT (b,__SYSCALL_NARGS(__VA_ARGS__))(__VA_ARGS__)
+
+#define __SYSCALL_CALL(...) __SYSCALL_DISP (__SYSCALL, __VA_ARGS__)
-#define SYSCALL_CANCEL(name, ...) \
+#define SYSCALL_CANCEL(...) \
({ \
long int sc_ret; \
if (SINGLE_THREAD_P) \
- sc_ret = INLINE_SYSCALL (name, __SYSCALL_NARGS(__VA_ARGS__), \
- __VA_ARGS__); \
+ sc_ret = __SYSCALL_CALL (__VA_ARGS__); \
else \
{ \
int sc_cancel_oldtype = LIBC_CANCEL_ASYNC (); \
- sc_ret = INLINE_SYSCALL (name, __SYSCALL_NARGS (__VA_ARGS__), \
- __VA_ARGS__); \
+ sc_ret = __SYSCALL_CALL (__VA_ARGS__); \
LIBC_CANCEL_RESET (sc_cancel_oldtype); \
} \
sc_ret; \