19 lines
390 B
PHP
19 lines
390 B
PHP
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/* Store the initial timestamp for booting in mmx registers. This works
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* because the bootblock isn't being compiled with MMX support so mm0 and
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* mm1 will be preserved into romstage. */
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.code32
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.global stash_timestamp
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stash_timestamp:
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/* Save the BIST value */
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movl %eax, %ebp
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finit
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rdtsc
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movd %eax, %mm0
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movd %edx, %mm1
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/* Restore the BIST value to %eax */
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movl %ebp, %eax
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