Using windowed register file to checkpoint register state
In one embodiment, a processor comprises a core configured to execute instructions; a register file comprising a plurality of storage locations; and a window management unit. The window management unit is configured to operate the plurality of storage locations as a plurality of windows, wherein reg...
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| creator | LAUDON JAMES P TALCOTT ADAM R SURESH THIRUMALAI S PATEL SANJAY |
| description | In one embodiment, a processor comprises a core configured to execute instructions; a register file comprising a plurality of storage locations; and a window management unit. The window management unit is configured to operate the plurality of storage locations as a plurality of windows, wherein register addresses encoded into the instructions identify storage locations among a subset of the plurality of storage locations that are within a current window. Additionally, the window management unit is configured to allocate a second window in response to a predetermined event. One of the current window and the second window serves as a checkpoint of register state, and the other one of the current window and the second window is updated in response to instructions processed subsequent to the checkpoint. The checkpoint may be restored if the speculative execution results are discarded. |
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| fullrecord | <record><control><sourceid>epo_EVB</sourceid><recordid>TN_cdi_epo_espacenet_US2008016325A1</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>US2008016325A1</sourcerecordid><originalsourceid>FETCH-epo_espacenet_US2008016325A13</originalsourceid><addsrcrecordid>eNrjZLAMLc7MS1coz8xLyS9PTVEoSk3PLC5JLVJIy8xJVSjJV0jOSE3OLsjPzCtByBWXJJak8jCwpiXmFKfyQmluBmU31xBnD93Ugvz41OKCxOTUvNSS-NBgIwMDCwNDM2MjU0dDY-JUAQAgvS_n</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>patent</recordtype></control><display><type>patent</type><title>Using windowed register file to checkpoint register state</title><source>esp@cenet</source><creator>LAUDON JAMES P ; TALCOTT ADAM R ; SURESH THIRUMALAI S ; PATEL SANJAY</creator><creatorcontrib>LAUDON JAMES P ; TALCOTT ADAM R ; SURESH THIRUMALAI S ; PATEL SANJAY</creatorcontrib><description>In one embodiment, a processor comprises a core configured to execute instructions; a register file comprising a plurality of storage locations; and a window management unit. The window management unit is configured to operate the plurality of storage locations as a plurality of windows, wherein register addresses encoded into the instructions identify storage locations among a subset of the plurality of storage locations that are within a current window. Additionally, the window management unit is configured to allocate a second window in response to a predetermined event. One of the current window and the second window serves as a checkpoint of register state, and the other one of the current window and the second window is updated in response to instructions processed subsequent to the checkpoint. The checkpoint may be restored if the speculative execution results are discarded.</description><language>eng</language><subject>CALCULATING ; COMPUTING ; COUNTING ; ELECTRIC DIGITAL DATA PROCESSING ; PHYSICS</subject><creationdate>2008</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20080117&DB=EPODOC&CC=US&NR=2008016325A1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25562,76317</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20080117&DB=EPODOC&CC=US&NR=2008016325A1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>LAUDON JAMES P</creatorcontrib><creatorcontrib>TALCOTT ADAM R</creatorcontrib><creatorcontrib>SURESH THIRUMALAI S</creatorcontrib><creatorcontrib>PATEL SANJAY</creatorcontrib><title>Using windowed register file to checkpoint register state</title><description>In one embodiment, a processor comprises a core configured to execute instructions; a register file comprising a plurality of storage locations; and a window management unit. The window management unit is configured to operate the plurality of storage locations as a plurality of windows, wherein register addresses encoded into the instructions identify storage locations among a subset of the plurality of storage locations that are within a current window. Additionally, the window management unit is configured to allocate a second window in response to a predetermined event. One of the current window and the second window serves as a checkpoint of register state, and the other one of the current window and the second window is updated in response to instructions processed subsequent to the checkpoint. The checkpoint may be restored if the speculative execution results are discarded.</description><subject>CALCULATING</subject><subject>COMPUTING</subject><subject>COUNTING</subject><subject>ELECTRIC DIGITAL DATA PROCESSING</subject><subject>PHYSICS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2008</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZLAMLc7MS1coz8xLyS9PTVEoSk3PLC5JLVJIy8xJVSjJV0jOSE3OLsjPzCtByBWXJJak8jCwpiXmFKfyQmluBmU31xBnD93Ugvz41OKCxOTUvNSS-NBgIwMDCwNDM2MjU0dDY-JUAQAgvS_n</recordid><startdate>20080117</startdate><enddate>20080117</enddate><creator>LAUDON JAMES P</creator><creator>TALCOTT ADAM R</creator><creator>SURESH THIRUMALAI S</creator><creator>PATEL SANJAY</creator><scope>EVB</scope></search><sort><creationdate>20080117</creationdate><title>Using windowed register file to checkpoint register state</title><author>LAUDON JAMES P ; TALCOTT ADAM R ; SURESH THIRUMALAI S ; PATEL SANJAY</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_US2008016325A13</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>2008</creationdate><topic>CALCULATING</topic><topic>COMPUTING</topic><topic>COUNTING</topic><topic>ELECTRIC DIGITAL DATA PROCESSING</topic><topic>PHYSICS</topic><toplevel>online_resources</toplevel><creatorcontrib>LAUDON JAMES P</creatorcontrib><creatorcontrib>TALCOTT ADAM R</creatorcontrib><creatorcontrib>SURESH THIRUMALAI S</creatorcontrib><creatorcontrib>PATEL SANJAY</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>LAUDON JAMES P</au><au>TALCOTT ADAM R</au><au>SURESH THIRUMALAI S</au><au>PATEL SANJAY</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Using windowed register file to checkpoint register state</title><date>2008-01-17</date><risdate>2008</risdate><abstract>In one embodiment, a processor comprises a core configured to execute instructions; a register file comprising a plurality of storage locations; and a window management unit. The window management unit is configured to operate the plurality of storage locations as a plurality of windows, wherein register addresses encoded into the instructions identify storage locations among a subset of the plurality of storage locations that are within a current window. Additionally, the window management unit is configured to allocate a second window in response to a predetermined event. One of the current window and the second window serves as a checkpoint of register state, and the other one of the current window and the second window is updated in response to instructions processed subsequent to the checkpoint. The checkpoint may be restored if the speculative execution results are discarded.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | CALCULATING COMPUTING COUNTING ELECTRIC DIGITAL DATA PROCESSING PHYSICS |
| title | Using windowed register file to checkpoint register state |
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