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@ -5,24 +5,24 @@ switch_to: # switch_to(from, to) |
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# save from's registers |
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movl 4(%esp), %eax # eax points to from |
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popl 0(%eax) # save eip !popl |
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movl %esp, 4(%eax) |
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movl %ebx, 8(%eax) |
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movl %ecx, 12(%eax) |
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movl %edx, 16(%eax) |
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movl %esi, 20(%eax) |
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movl %edi, 24(%eax) |
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movl %ebp, 28(%eax) |
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movl %esp, 4(%eax) # save esp::context of from |
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movl %ebx, 8(%eax) # save ebx::context of from |
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movl %ecx, 12(%eax) # save ecx::context of from |
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movl %edx, 16(%eax) # save edx::context of from |
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movl %esi, 20(%eax) # save esi::context of from |
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movl %edi, 24(%eax) # save edi::context of from |
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movl %ebp, 28(%eax) # save ebp::context of from |
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# restore to's registers |
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movl 4(%esp), %eax # not 8(%esp): popped return address already |
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# eax now points to to |
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movl 28(%eax), %ebp |
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movl 24(%eax), %edi |
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movl 20(%eax), %esi |
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movl 16(%eax), %edx |
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movl 12(%eax), %ecx |
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movl 8(%eax), %ebx |
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movl 4(%eax), %esp |
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movl 28(%eax), %ebp # restore ebp::context of to |
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movl 24(%eax), %edi # restore edi::context of to |
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movl 20(%eax), %esi # restore esi::context of to |
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movl 16(%eax), %edx # restore edx::context of to |
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movl 12(%eax), %ecx # restore ecx::context of to |
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movl 8(%eax), %ebx # restore ebx::context of to |
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movl 4(%eax), %esp # restore esp::context of to |
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pushl 0(%eax) # push eip |
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