发明授权
- 专利标题: Absolute address branching in a fixed-width reduced instruction set computing architecture
- 专利标题(中): 固定宽度精简指令集计算架构中的绝对地址分支
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申请号: US14291627申请日: 2014-05-30
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公开(公告)号: US09547494B2公开(公告)日: 2017-01-17
- 发明人: Michael K. Gschwind
- 申请人: International Business Machines Corporation
- 申请人地址: US NY Armonk
- 专利权人: INTERNATIONAL BUSINESS MACHINES CORPORATION
- 当前专利权人: INTERNATIONAL BUSINESS MACHINES CORPORATION
- 当前专利权人地址: US NY Armonk
- 代理机构: Cantor Colburn LLP
- 代理商 Steven Bennett
- 主分类号: G06F9/32
- IPC分类号: G06F9/32 ; G06F9/34 ; G06F9/42 ; G06F9/38 ; G06F9/30 ; G06F9/44
摘要:
Embodiments relate to a system for absolute address branching in a reduced instruction set computing (RISC) architecture. One aspect is a system that includes memory and a processing circuit communicatively coupled to the memory. The system is configured to perform a method that includes fetching a branch instruction from an instruction stream having a fixed instruction width. A branch target address value is acquired from the instruction stream. The branch target address value represents a target address of the branch instruction. The branch target address value is formatted as an absolute address and sized as a multiple of the fixed instruction width. The branch target address value is loaded into a program counter based on the branch instruction. Execution of the instruction stream is redirected to a next instruction based on the branch target address value in the program counter.
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