[Valgrind-developers] PATCH: add support for gettid() and set_thread_area() syscalls

[Adam G. <ar...@cy...>]

patch which adds support for the new gettid() system call, and makes
the new set_thread_area() system call return ENOSYS (currently anything
using this system call should cope with it not existing and fall back to
modify_ldt()).

Index: coregrind/vg_syscalls.c
===================================================================
RCS file: /cvsroot/valgrind/valgrind/coregrind/vg_syscalls.c,v
retrieving revision 1.25
diff -u -r1.25 vg_syscalls.c
--- coregrind/vg_syscalls.c     24 Feb 2003 21:55:34 -0000      1.25
+++ coregrind/vg_syscalls.c     3 Apr 2003 14:11:23 -0000
@@ -30,11 +30,19 @@
 */
 
 #include "vg_include.h"
+#include <errno.h>
 
 /* vg_unsafe.h should NOT be included into any file except this
    one. */
 #include "vg_unsafe.h"
 
+#ifndef __NR_set_thread_area
+#define __NR_set_thread_area   243
+#endif
+
+#ifndef __NR_gettid
+#define __NR_gettid 224
+#endif
 
 /* All system calls are channelled through here, doing two things:
 
@@ -598,6 +610,14 @@
          break;
 #     endif
 
+#     if defined(__NR_set_thread_area)
+      case __NR_set_thread_area:
+        /* set_thread_area() */
+        MAYBE_PRINTF("set_thread_area ( )\n");
+        SET_EAX(tid, -ENOSYS);
+        break;
+#     endif
+
 #     if defined(__NR_modify_ldt)
       case __NR_modify_ldt: /* syscall 123 */
          /* int modify_ldt(int func, void *ptr, 
@@ -647,6 +667,14 @@
          break;
 #     endif
 
+#     if defined(__NR_gettid)
+      case __NR_gettid: /* syscall 224 */
+         /* pid_t gettid(void); */
+         MAYBE_PRINTF("gettid ()\n");
+         KERNEL_DO_SYSCALL(tid,res);
+         break;
+#     endif
+
 #     if defined(__NR_setxattr)
       case __NR_setxattr: /* syscall 226 */
          /* int setxattr (const char *path, const char *name,


Seeya,
 Adam
--
Real Programmers don't comment their code. If it was hard to write,
it should be hard to read, and even harder to modify.
These are all my own opinions.