diff options
| -rw-r--r-- | linuxthreads/sysdeps/i386/tls.h | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/linuxthreads/sysdeps/i386/tls.h b/linuxthreads/sysdeps/i386/tls.h index 55cceccf37..a00de6c3d8 100644 --- a/linuxthreads/sysdeps/i386/tls.h +++ b/linuxthreads/sysdeps/i386/tls.h @@ -94,12 +94,16 @@ typedef struct { nr, (unsigned long int) (descr), sizeof (struct _pthread_descr_struct), \ 1, 0, 0, 0, 0, 1, 0 }; \ int result; \ - asm ("pushl %%ebx\n\t" \ + asm volatile ( \ + "pushl %%ebx\n\t" \ "movl $1, %%ebx\n\t" \ "int $0x80\n\t" \ "popl %%ebx" \ : "=a" (result) \ - : "0" (__NR_modify_ldt), "d" (sizeof (ldt_entry)), "c" (&ldt_entry)); \ + : "0" (__NR_modify_ldt), \ + /* The extra argument with the "m" constraint is necessary \ + to let the compiler know that we are accessing LDT_ENTRY here. */\ + "m" (ldt_entry), "c" (&ldt_entry), "d" (sizeof (ldt_entry))); \ __builtin_expect (result, 0) != 0 ? -1 : nr * 8 + 7; \ }) |