发明名称 |
Branching to target address by adding value selected from programmable offset table to base address specified in branch instruction |
摘要 |
Methods and systems consistent with the present invention provide a programmable table which allows software to define a plurality of branching functions, each of which maps a vector of condition codes to a branch offset. This technique allows for a flexible multi-way branching functionality, using a conditional branch outcome table that can be specified by a programmer. Any instruction can specify the evaluation of arbitrary conditional expressions to compute the values for the condition codes, and can choose a particular branching function. When the processor executes the instruction, the processor's arithmetic/logical functional units evaluate the conditional expressions and then the processor performs the branch operation, according to the specified branching function. |
申请公布号 |
US8332622(B2) |
申请公布日期 |
2012.12.11 |
申请号 |
US201113323358 |
申请日期 |
2011.12.12 |
申请人 |
GUPTA ANURAG P;KEEN JOHN;LIBBY JEFFREY G;FRAILONG JEAN-MARC;GODBOLE AVANINDRA;YELURI SHARADA;JUNIPER NETWORKS, INC. |
发明人 |
GUPTA ANURAG P;KEEN JOHN;LIBBY JEFFREY G;FRAILONG JEAN-MARC;GODBOLE AVANINDRA;YELURI SHARADA |
分类号 |
G06F9/32 |
主分类号 |
G06F9/32 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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