Invention Publication
- Patent Title: SYSTEM AND METHOD FOR TRACING INSTRUCTION CACHE MISSES
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Application No.: US18504468Application Date: 2023-11-08
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Publication No.: US20240211405A1Publication Date: 2024-06-27
- Inventor: Rajan Srivastava , Sourav Roy
- Applicant: NXP USA, Inc.
- Applicant Address: US TX AUSTIN
- Assignee: NXP USA, Inc.
- Current Assignee: NXP USA, Inc.
- Current Assignee Address: US TX AUSTIN
- Priority: IN 2221075681 2022.12.26
- Main IPC: G06F12/0875
- IPC: G06F12/0875 ; G06F12/0811

Abstract:
A system on chip (SoC) architecture includes an integrated branch and cache hit-miss trace circuit operably coupled to a CPU core, a first trace circuit, and a cache hit-miss trace circuit. Following an occurrence of a cache-fetch instruction: the cache hit-miss trace circuit identifies whether the fetch instruction is a cache-missed instruction, and, in response thereto, sends a cache miss report message that includes a fetch instruction address to the first trace circuit. The first trace circuit is configured to identify whether the fetch instruction is a taken-branch instruction and creates a modified branch trace response message (BTM) that includes the fetch instruction address and sends the modified BTM to a create trace messages circuit. The modified BTM indicates an instruction address of the cache miss.
Information query
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