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.globl _tas
_tas:
movl $0xCAFEBABE, %eax
movl 4(%esp), %ecx
xchgl %eax, 0(%ecx)
ret
.globl getmcontext
getmcontext:
movl 4(%esp), %eax
movl %fs, 8(%eax)
movl %es, 12(%eax)
movl %ds, 16(%eax)
movl %ss, 76(%eax)
movl %edi, 20(%eax)
movl %esi, 24(%eax)
movl %ebp, 28(%eax)
movl %ebx, 36(%eax)
movl %edx, 40(%eax)
movl %ecx, 44(%eax)
movl $1, 48(%eax) /* %eax */
movl (%esp), %ecx /* %eip */
movl %ecx, 60(%eax)
leal 4(%esp), %ecx /* %esp */
movl %ecx, 72(%eax)
movl 44(%eax), %ecx /* restore %ecx */
movl $0, %eax
ret
.globl setmcontext
setmcontext:
movl 4(%esp), %eax
movl 8(%eax), %fs
movl 12(%eax), %es
movl 16(%eax), %ds
movl 76(%eax), %ss
movl 20(%eax), %edi
movl 24(%eax), %esi
movl 28(%eax), %ebp
movl 36(%eax), %ebx
movl 40(%eax), %edx
movl 44(%eax), %ecx
movl 72(%eax), %esp
pushl 60(%eax) /* new %eip */
movl 48(%eax), %eax
ret
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