GDB 7.6.50

gdb/testsuite/gdb.arch/mips-octeon-bbit.c

Index: gdb/testsuite/gdb.arch/mips-octeon-bbit.c
diff --git a/gdb/testsuite/gdb.arch/mips-octeon-bbit.c b/gdb/testsuite/gdb.arch/mips-octeon-bbit.c
new file mode 100644
index 0000000000000000000000000000000000000000..e3df4a4fd6dd37f75085dd2eebacb00e7074eca1
--- /dev/null
+++ b/gdb/testsuite/gdb.arch/mips-octeon-bbit.c
@@ -0,0 +1,49 @@
+typedef unsigned long long uint64_t;
+void abort (void);
+
+#define BASE 0x1234567812345678ull
+
+#define DEF_BBIT_TAKEN(BRANCH_IF, BIT)					\
+  int bbit_is_taken_##BRANCH_IF##_##BIT (volatile uint64_t *p)		\
+  {									\
+    int ret;								\
+    asm (".set push				\n\t"			\
+	 ".set noreorder			\n\t"			\
+	 "bbit" #BRANCH_IF " %1, " #BIT ", 1f	\n\t"			\
+	 "nop					\n\t"			\
+	 "li %0, 0				\n\t"			\
+	 "b 2f					\n\t"			\
+	 "nop					\n\t"			\
+	 "1:					\n\t"			\
+	 "li %0, 1				\n\t"			\
+	 "2:					\n\t"			\
+	 ".set pop"							\
+	 : "=r"(ret) : "r"(*p));					\
+    return ret;								\
+  }									\
+  volatile uint64_t taken_##BRANCH_IF##_##BIT =				\
+    BASE & (~(1ull << BIT)) | ((uint64_t) BRANCH_IF << BIT);		\
+  volatile uint64_t not_taken_##BRANCH_IF##_##BIT =			\
+    BASE & (~(1ull << BIT)) | (((uint64_t) !BRANCH_IF) << BIT);  
+
+DEF_BBIT_TAKEN (0, 10);
+DEF_BBIT_TAKEN (0, 36);
+DEF_BBIT_TAKEN (1, 20);
+DEF_BBIT_TAKEN (1, 49);
+
+#define EXPECT(X) if (!(X)) abort ();
+
+main ()
+{
+  EXPECT (bbit_is_taken_0_10 (&taken_0_10));
+  EXPECT (!bbit_is_taken_0_10 (&not_taken_0_10));
+
+  EXPECT (bbit_is_taken_0_36 (&taken_0_36));
+  EXPECT (!bbit_is_taken_0_36 (&not_taken_0_36));
+
+  EXPECT (bbit_is_taken_1_20 (&taken_1_20));
+  EXPECT (!bbit_is_taken_1_20 (&not_taken_1_20));
+
+  EXPECT (bbit_is_taken_1_49 (&taken_1_49));
+  EXPECT (!bbit_is_taken_1_49 (&not_taken_1_49));
+}