From 188356b8cca3cadc66664b8da11d342d45f95ff5 Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Tue, 24 Jul 2001 06:48:43 +0000 Subject: [PATCH] Initialize %fs, %gs, and floating-point status as well. --- sysdeps/unix/sysv/linux/i386/makecontext.S | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/sysdeps/unix/sysv/linux/i386/makecontext.S b/sysdeps/unix/sysv/linux/i386/makecontext.S index 56b5537ce3..1ca3233945 100644 --- a/sysdeps/unix/sysv/linux/i386/makecontext.S +++ b/sysdeps/unix/sysv/linux/i386/makecontext.S @@ -40,6 +40,22 @@ ENTRY(__makecontext) movl oLINK(%eax), %ecx movl %ecx, -4(%edx) + /* Copy the FS and GS segment register. */ + xorl %ecx, %ecx + movw %gs, %cx + movl %ecx, oGS(%eax) + xorl %ecx, %ecx + movw %fs, %cx + movl %ecx, oFS(%eax) + + /* We have separate floating-point register content memory on the + stack. We use the __fpregs_mem block in the context. Set the + links up correctly. */ + leal oFPREGSMEM(%eax), %ecx + movl %ecx, oFPREGS(%eax) + /* Save the floating-point context. */ + fnstenv (%ecx) + /* Remember the number of parameters for the exit handler since it has to remove them. We store the number in the EBX register which the function we will call must preserve. */ -- 2.43.5