Subversion Repositories HelenOS

Rev

Rev 2787 | Go to most recent revision | Show entire file | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed

Rev 2787 Rev 4692
Line 40... Line 40...
40 
	pushl %ebx
 40 
	pushl %ebx
41
41
42 
	movl 12(%esp),%ebx
 42 
	movl 12(%esp),%ebx
43 
 
 43 
 
44 
0:
44 
0:
45 
	#ifdef CONFIG_HT
 - 
 
46 
	pause			# Pentium 4's with HT love this instruction
 45 
	pause			# Pentium 4's with HT love this instruction
47 
	#endif
 - 
 
48 
	movl (%ebx),%eax
 46 
	movl (%ebx),%eax
49 
	testl %eax,%eax
 47 
	testl %eax,%eax
50 
	jnz 0b			# lightweight looping while it is locked
 48 
	jnz 0b			# lightweight looping while it is locked
51 
	incl %eax
 49 
	incl %eax
52 
	xchgl %eax,(%ebx)	# now use the atomic operation
 50 
	xchgl %eax,(%ebx)	# now use the atomic operation