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| author | Ulrich Drepper <drepper@redhat.com> | 2001-07-24 06:48:43 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 2001-07-24 06:48:43 +0000 |
| commit | 188356b8cca3cadc66664b8da11d342d45f95ff5 (patch) | |
| tree | 7149c280b59df5c4770a517f87c9ea84f920767d | |
| parent | 760b7056239a51e7fa1cbbd99b293c4366f64a1a (diff) | |
| download | glibc-188356b8cca3cadc66664b8da11d342d45f95ff5.tar.gz glibc-188356b8cca3cadc66664b8da11d342d45f95ff5.tar.xz glibc-188356b8cca3cadc66664b8da11d342d45f95ff5.zip | |
Initialize %fs, %gs, and floating-point status as well.
| -rw-r--r-- | sysdeps/unix/sysv/linux/i386/makecontext.S | 16 |
1 files changed, 16 insertions, 0 deletions
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. */ |