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Patch by "Grey": Small optimization of arch_int_disable_interrupts_inline()

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and arch_int_restore_interrupts_inline().


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@35377 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Ingo Weinhold 2010-02-01 08:55:44 +00:00
parent 0086654c68
commit c2629ccc6a
1 changed files with 3 additions and 10 deletions
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13
headers/private/kernel/arch/x86/arch_int.h
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@ -25,22 +25,15 @@ arch_int_disable_interrupts_inline(void)
asm volatile("pushfl;\n"
"popl %0;\n"
"cli" : "=g" (flags));
return (flags & 0x200) != 0;
return flags ;
}
static inline void
arch_int_restore_interrupts_inline(int oldState)
{
int flags = oldState ? 0x200 : 0;
asm volatile("pushfl;\n"
"popl %0;\n"
"andl $0xfffffdff,%0;\n"
"orl %1,%0;\n"
"pushl %0;\n"
"popfl\n"
: "=&r"(flags) : "r"(flags));
if (oldState & 0x200)
asm("sti");
}