公开(公告)号：US20230342279A1

公开(公告)日：2023-10-26

申请号：US18306032

申请日：2023-04-24

Applicant: STMicroelectronics (Grand Ouest) SAS

Inventor： Michel Jaouen ,  Loic Pallardy

IPC: G06F11/34 ,  G06F11/36

CPC classification number: G06F11/3466 ,  G06F11/3612

Abstract: A method is provided for monitoring an execution of a selected program code portion stored in a memory address range between a start address and an end address. The method includes starting a timing when a program counter points to the start address of the selected program code portion. Current values of the program counter are compared with a set of target addresses specific to the selected program code portion including the end address of the selected program code portion. The timing is stopped when the program counter points to the end address of the selected program code portion. An error signal is generated in response to the timing duration being outside a nominal duration range specific to the selected program code portion.

公开(公告)号：US20230161863A1

公开(公告)日：2023-05-25

申请号：US18058130

申请日：2022-11-22

Applicant: STMicroelectronics (Grand Ouest) SAS

Inventor： Michel Jaouen ,  Loic Pallardy ,  Ludovic Barre

IPC: G06F21/44

CPC classification number: G06F21/44

Abstract: In an embodiment a method includes compiling, by a processor in a compiling phase, a software program intended to be executed by the processor, the processor having secure and non-secure access right level execution contexts, and/or privileged and non-privileged access right level execution contexts and generating, in the compilation phase, instructions in machine language having an exclusively secure access right level when the instructions are intended to be executed in the secure access right level execution context, and instructions having a non-privileged access right level when the instructions are intended to be executed in the non-privileged access right level execution context.

公开(公告)号：US20220164016A1

公开(公告)日：2022-05-26

申请号：US17517382

申请日：2021-11-02

Applicant: STMicroelectronics (Grand Ouest) SAS

Inventor： Gerald Baeza ,  Pascal Paillet ,  Loic Pallardy

IPC: G06F1/324 ,  G06F1/3206

Abstract: In an embodiment a method for managing a low-power mode of an electronic device includes at a first request for transitioning an electronic device to a low-power mode, storing values of a first counter and a second counter of the electronic device on a first edge of a first clock and at a second request for transitioning the electronic device out of the low-power mode calculating a number of periods of a second clock between a second edge of the first clock and the first edge, the second edge being later than the first edge and updating the value of the second counter with a calculated value, wherein the first clock drives the first counter and the second clock drives the second counter, the second clock being faster than the first clock.