基本信息:
- 专利标题： INTERMODAL CALLING BRANCH INSTRUCTION
- 申请号：PCT/GB2020/052797 申请日：2020-11-05
- 公开(公告)号：WO2021116653A1 公开(公告)日：2021-06-17
- 发明人： GROCUTT, Thomas Christopher
- 申请人： ARM LIMITED
- 申请人地址： 110 Fulbourn Road
- 专利权人： ARM LIMITED
- 当前专利权人： ARM LIMITED
- 当前专利权人地址： 110 Fulbourn Road
- 代理机构： BERRYMAN, Robert
- 优先权： GB1918213.8 2019-12-11
- 主分类号： G06F9/30
- IPC分类号： G06F9/30 ; G06F9/38 ; G06F21/00
摘要：
Processing circuitry (4) has a handler mode and a thread mode. In response to an exception condition, a switch to handler mode is made. In response to an intermodal calling branch instruction specifying a branch target address when the processing circuitry (4) is in the handler mode, an instruction decoder (10) controls the processing circuitry to save a function return address to a function return address storage location; switch a current mode of the processing circuitry (4) to the thread mode; and branch to an instruction identified by the branch target address. This can be useful for deprivileging of exceptions.
IPC结构图谱:
| G | 物理 |
| --G06 | 计算；推算；计数 |
| ----G06F | 电数字数据处理 |
| ------G06F9/00 | 电数字数据处理的控制单元 |
| --------G06F9/06 | .应用存入的程序的，即应用处理设备的内部存储来接收程序并保持程序的 |
| ----------G06F9/30 | ..执行机器指令的装置，例如指令译码 |