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Initialize %fs, %gs, and floating-point status as well.

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This commit is contained in:
Ulrich Drepper
2001-07-24 06:48:43 +00:00
parent 760b705623
commit 188356b8cc
1 changed files with 16 additions and 0 deletions
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16
sysdeps/unix/sysv/linux/i386/makecontext.S
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@ -40,6 +40,22 @@ ENTRY(__makecontext)
movl oLINK(%eax), %ecx movl oLINK(%eax), %ecx
movl %ecx, -4(%edx) 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 /* Remember the number of parameters for the exit handler since
it has to remove them. We store the number in the EBX register it has to remove them. We store the number in the EBX register
which the function we will call must preserve. */ which the function we will call must preserve. */