]> Joshua Wise's Git repositories - netwatch.git/blob - aseg-paging/pagingstub-asm.s
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[netwatch.git] / aseg-paging / pagingstub-asm.s
1
2 .globl set_cr0
3
4 set_cr0:
5   mov 4(%esp), %eax                     # Load argument
6   movl %eax, %cr0                       # Set CR0
7   pushw %cs                             # Push 16 bits of %CS
8   pushl $set_cr0_cont                   # Push 32 bits of %EIP
9   ljmp *(%esp)                          # "Far jump" (both %CS and %EIP from stack)
10 set_cr0_cont:                           # Hey, here we are!
11   addl $6, %esp                         # Un-do 48 bits of pushing
12   ret
13
14
15 .globl ps_switch_stack
16 ps_switch_stack:
17   mov 4(%esp), %eax
18   mov 8(%esp), %esp   
19   call *%eax
20   rsm
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