X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=qemu%2Ftests%2Ftcg%2Fcris%2Fcheck_glibc_kernelversion.c;fp=qemu%2Ftests%2Ftcg%2Fcris%2Fcheck_glibc_kernelversion.c;h=07448722c001357e90c19219608545cf2601dfe1;hb=e44e3482bdb4d0ebde2d8b41830ac2cdb07948fb;hp=0000000000000000000000000000000000000000;hpb=9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00;p=kvmfornfv.git

diff --git a/qemu/tests/tcg/cris/check_glibc_kernelversion.c b/qemu/tests/tcg/cris/check_glibc_kernelversion.c
new file mode 100644
index 000000000..07448722c
--- /dev/null
+++ b/qemu/tests/tcg/cris/check_glibc_kernelversion.c
@@ -0,0 +1,116 @@
+/*
+ * Check the lz insn.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include "sys.h"
+
+#define __LINUX_KERNEL_VERSION 131584
+
+#define DL_SYSDEP_OSCHECK(FATAL) \
+  do {                                                                        \
+    /* Test whether the kernel is new enough.  This test is only              \
+       performed if the library is not compiled to run on all                 \
+       kernels.  */                                                           \
+    if (__LINUX_KERNEL_VERSION > 0)                                           \
+      {                                                                       \
+        char bufmem[64];                                                      \
+        char *buf = bufmem;                                                   \
+        unsigned int version;                                                 \
+        int parts;                                                            \
+        char *cp;                                                             \
+        struct utsname uts;                                                   \
+                                                                              \
+        /* Try the uname syscall */                                           \
+        if (__uname (&uts))                                                   \
+          {                                                                   \
+            /* This was not successful.  Now try reading the /proc            \
+               filesystem.  */                                                \
+            ssize_t reslen;                                                   \
+            int fd = __open ("/proc/sys/kernel/osrelease", O_RDONLY);         \
+            if (fd == -1                                                      \
+                || (reslen = __read (fd, bufmem, sizeof (bufmem))) <= 0)      \
+              /* This also didn't work.  We give up since we cannot           \
+                 make sure the library can actually work.  */                 \
+              FATAL ("FATAL: cannot determine library version\n");            \
+            __close (fd);                                                     \
+            buf[MIN (reslen, (ssize_t) sizeof (bufmem) - 1)] = '\0';          \
+          }                                                                   \
+        else                                                                  \
+          buf = uts.release;                                                  \
+                                                                              \
+        /* Now convert it into a number.  The string consists of at most      \
+           three parts.  */                                                   \
+        version = 0;                                                          \
+        parts = 0;                                                            \
+        cp = buf;                                                             \
+        while ((*cp >= '0') && (*cp <= '9'))                                  \
+          {                                                                   \
+            unsigned int here = *cp++ - '0';                                  \
+                                                                              \
+            while ((*cp >= '0') && (*cp <= '9'))                              \
+              {                                                               \
+                here *= 10;                                                   \
+                here += *cp++ - '0';                                          \
+              }                                                               \
+                                                                              \
+            ++parts;                                                          \
+            version <<= 8;                                                    \
+            version |= here;                                                  \
+                                                                              \
+            if (*cp++ != '.')                                                 \
+              /* Another part following?  */                                  \
+              break;                                                          \
+          }                                                                   \
+                                                                              \
+        if (parts < 3)                                                        \
+          version <<= 8 * (3 - parts);                                        \
+                                                                              \
+        /* Now we can test with the required version.  */                     \
+        if (version < __LINUX_KERNEL_VERSION)                                 \
+          /* Not sufficient.  */                                               \
+          FATAL ("FATAL: kernel too old\n");                                  \
+                                                                              \
+        _dl_osversion = version;                                              \
+      }                                                                       \
+  } while (0)
+
+int main(void)
+{
+        char bufmem[64] = "2.6.22";
+        char *buf = bufmem;
+        unsigned int version;
+        int parts;
+        char *cp;
+
+        version = 0;
+        parts = 0;
+        cp = buf;
+        while ((*cp >= '0') && (*cp <= '9'))
+          {
+            unsigned int here = *cp++ - '0';
+
+            while ((*cp >= '0') && (*cp <= '9'))
+              {
+                here *= 10;
+                here += *cp++ - '0';
+              }
+
+            ++parts;
+            version <<= 8;
+            version |= here;
+
+            if (*cp++ != '.')
+              /* Another part following?  */
+              break;
+          }
+
+        if (parts < 3)
+          version <<= 8 * (3 - parts);
+	if (version < __LINUX_KERNEL_VERSION)
+		err();
+	pass();
+	exit(0);
+}