Merge r6092 and some of r6093:

AIX5 kernel-interface stuff.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@6245 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/auxprogs/aix5_proc_self_sysent.c b/auxprogs/aix5_proc_self_sysent.c
new file mode 100644
index 0000000..380a17a
--- /dev/null
+++ b/auxprogs/aix5_proc_self_sysent.c
@@ -0,0 +1,37 @@
+
+/* A program which prints its own syscall name-to-number bindings.
+   Used to generate the basis of include/vki/vki-scnums-aix5.h and
+   coregrind/m_vkiscnums.c. */
+
+#include <stdio.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include <assert.h>
+
+#include <sys/procfs.h>
+
+#define NN 100000
+char buf[NN];
+int nbuf = 0;
+
+int main ( void )
+{
+  int i;
+  char name[50];
+  sprintf(name, "/proc/%d/sysent", getpid());
+  FILE* f = fopen(name, "r");
+  assert(f);
+  nbuf = fread(buf, 1, NN, f);
+  assert(nbuf > 0 && nbuf <= NN);
+
+  prsysent_t* header = (prsysent_t*)&buf[0];
+  if (0) printf("Found %u syscalls\n\n", header->pr_nsyscalls);
+
+  for (i = 0; i < header->pr_nsyscalls; i++) {
+    printf("%3u  %s\n", header->pr_syscall[i].pr_number,
+	   &buf[ header->pr_syscall[i].pr_nameoff ]);
+  }
+
+  fclose(f);
+  return 0;
+}