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https://github.com/RGBCube/serenity
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153ea704af
It only works for sending a signal to a process that's in userspace code. We implement reception by synthesizing a PUSHA+PUSHF in the receiving process (operating on values in the TSS.) The TSS CS:EIP is then rerouted to the signal handler and a tiny return trampoline is constructed in a dedicated region in the receiving process. Also hacked up /bin/kill to be able to send arbitrary signals (kill -N PID)
18 lines
356 B
C
18 lines
356 B
C
#pragma once
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#define _POSIX_VERSION 200809L
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#define ALWAYS_INLINE inline __attribute__ ((always_inline))
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#define __NORETURN __attribute__ ((noreturn))
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#define __MALLOC __attribute__ ((malloc))
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#ifdef __cplusplus
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#define __BEGIN_DECLS extern "C" {
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#define __END_DECLS }
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#else
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#define __BEGIN_DECLS
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#define __END_DECLS
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#endif
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#undef __P
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#define __P(a) a
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