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Updated to REAL_CODE()
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@ -50,26 +50,23 @@ static void empty_8042 ( void )
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*/
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void gateA20_set ( void ) {
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static char reentry_guard = 0;
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uint16_t flags, status;
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unsigned int discard_a;
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unsigned int flags;
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if ( reentry_guard )
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return;
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reentry_guard = 1;
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REAL_EXEC ( rm_enableA20,
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"sti\n\t"
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"stc\n\t"
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"int $0x15\n\t"
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"pushfw\n\t"
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"popw %%bx\n\t"
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"cli\n\t",
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2,
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OUT_CONSTRAINTS ( "=a" ( status ), "=b" ( flags ) ),
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IN_CONSTRAINTS ( "a" ( Enable_A20 ) ),
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CLOBBER ( "ecx", "edx", "ebp", "esi", "edi" ) );
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__asm__ __volatile__ ( REAL_CODE ( "sti\n\t"
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"stc\n\t"
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"int $0x15\n\t"
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"pushfw\n\t"
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"popw %w0\n\t"
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"cli\n\t" )
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: "=r" ( flags ), "=a" ( discard_a )
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: "a" ( Enable_A20 ) );
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if ( ( flags & CF ) ||
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( ( status >> 8 ) & 0xff ) ) {
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if ( flags & CF ) {
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/* INT 15 method failed, try alternatives */
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#ifdef IBM_L40
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outb(0x2, 0x92);
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