code: purgatorio

ref: 7975eec3e602fd5bc3e93c78f4166259190f2fe9
dir: /lib9/lock-Nt-386.c/

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#include "lib9.h"

int
_tas(int *la)
{
	int v;

	_asm {
		mov eax, la
		mov ebx, 1
		xchg	ebx, [eax]
		mov	v, ebx
	}
	return v;
}