Title:
条件付きメモリアクセスプログラム命令のための許可制御
Document Type and Number:
Japanese Patent JP6963572
Kind Code:
B2
Abstract:
A data processing apparatus and method serve to manage access permission checking in respect of contingent memory access operations (the access permission failure of which does not alter program flow) in dependence of a contingent-access permission checking disable flag. If the continent access disable flag has a first value, then this disables memory permission circuitry e.g. a walk state machine 22, from performing a check as to whether or not the memory access circuitry is permitted to perform a requested memory access. Non-contingent memory accesses are able to utilise the memory permission circuitry irrespective of the value of the contingent-access permission checking disable flag.
Inventors:
Stevens, Nigel John
Magcris, Grigoryos
Magcris, Grigoryos
Application Number:
JP2018567174A
Publication Date:
November 10, 2021
Filing Date:
May 18, 2017
Export Citation:
Assignee:
Arm limited
International Classes:
G06F12/14; G06F12/1027; G06F21/57
Domestic Patent References:
| JP2003058421A | ||||
| JP6059890A |
Foreign References:
| US5864692 | ||||
| US7178062 |
Attorney, Agent or Firm:
Asamura patent office