forked from Bananymous/banan-os
40 lines
480 B
ArmAsm
40 lines
480 B
ArmAsm
.section .userspace, "ax"
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// stack contains
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// return address
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// signal number
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// signal handler
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.global signal_trampoline
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signal_trampoline:
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pusha
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movl 40(%esp), %edi
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movl 36(%esp), %eax
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// align stack to 16 bytes
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movl %esp, %ebp
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andl $-16, %esp
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subl $512, %esp
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fxsave (%esp)
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subl $12, %esp
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pushl %edi
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call *%eax
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addl $16, %esp
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fxrstor (%esp)
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addl $512, %esp
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// restore stack
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movl %ebp, %esp
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popa
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addl $8, %esp
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popf
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movl (%esp), %esp
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ret
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