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Merging changes since 2023Q2 branching back to the main branch.
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vhscampos committed Aug 7, 2023
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34 changes: 13 additions & 21 deletions cmse/cmse.md
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---
title: Arm®v8-M Security Extensions <br /> Requirements on Development Tools
version: 1.2
date-of-issue: 06 April 2022
version: 1.3
date-of-issue: 04 August 2023
set-quote-highlight: true
# LaTeX specific variables
copyright-text: Copyright 2019, 2021-2023 Arm Limited and/or its affiliates <[email protected]>.
draftversion: true
draftversion: false
# Jekyll specific variables
header_counter: true
toc: true
Expand Down Expand Up @@ -121,23 +121,14 @@ Copyright 2019, 2021-2023 Arm Limited and/or its affiliates <open-source-office@

## Change control

### Current status and anticipated changes

This document is a development version based on release 1.1.

Anticipated changes to this document include:

* Typographical corrections.
* Clarifications.
* Compatible extensions.

### Change history

| Issue | Date | By | Change |
| :--- | :--- | :--- | :--- |
| 1.0 | 23/10/2015 | Arm | First release |
| 1.1 | 01/11/2019 | Arm | Second release |
| 1.2 | 06 April 2022 | Arm | See [Changes for version 1.2](#changes-for-version-1.2)|
| Issue | Date | By | Change |
| :--- | :--- | :--- | :--- |
| 1.0 | 23/10/2015 | Arm | First release |
| 1.1 | 01/11/2019 | Arm | Second release |
| 1.2 | 06 April 2022 | Arm | See [Changes for version 1.2](#changes-for-version-1.2)|
| 1.3 | 04 August 2023 | Arm | See [Changes for version 1.3](#changes-for-version-1.3)|

#### Changes for version 1.2

Expand All @@ -154,14 +145,15 @@ Anticipated changes to this document include:
NS nsfunc(struct s);` to `struct s NS (*nsfunc)(struct
s);`. Non-secure functions have to be function pointers.

#### Changes for next release
#### Changes for version 1.3

* Removed incorrect optimisation remark in section
[Arguments on the stack and floating point handling](#arguments-on-the-stack-and-floating-point-handling).
* Removed incorrect information about the floating-point ABI used in
[Arguments on the stack and floating point handling](#arguments-on-the-stack-and-floating-point-handling).
* Corrected description and example in section
[Non-secure function pointers](#non-secure-function-pointer).
* Fixed typos.

## References

Expand Down Expand Up @@ -1376,14 +1368,14 @@ The global variable `fp` is of a non-secure function type but can hold the
address of a secure or non-secure function. Arm recommends that you do not
share this variable.
Since `fp` can hold either type of function, the compiler may generate code
Since `fp` can hold either type of function, the compiler might generate code
to save and clear registers in preparation for a security state transition even
if the function call nevers performs such transition at run-time.
To mitigate this, an nsfptr provides a way to test at run-time the
security state that will be targeted when performing a call through
this pointer. By using the nsfptr related intrinsics, it is
possible to check at run-time which function call to perform and thus
possible to check at run-time which function call to perform and therefore
avoid unnecessary register context saving and clearing.
``` c
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15 changes: 8 additions & 7 deletions main/acle.md
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---
title: Arm C Language Extensions
version: 2022Q4
date-of-issue: 23 November 2022
version: 2023Q2
date-of-issue: 04 August 2023
# LaTeX specific variables
copyright-text: "Copyright: see section \\texorpdfstring{\\nameref{copyright}}{Copyright}."
draftversion: true
draftversion: false
# Jekyll specific variables
header_counter: true
toc: true
Expand Down Expand Up @@ -114,7 +114,7 @@ about Arm’s trademarks.

## Copyright

* Copyright 2011-2022 Arm Limited and/or its affiliates <[email protected]>.
* Copyright 2011-2023 Arm Limited and/or its affiliates <[email protected]>.
* Copyright 2022 Google LLC.

## About this document
Expand Down Expand Up @@ -175,6 +175,7 @@ unless a different support level is specified in the text.
| 2022Q1 | 06 April 2022 | Arm | See [Changes between ACLE Q4 2021 and ACLE Q1 2022](#changes-between-acle-q4-2021-and-acle-q1-2022) |
| 2022Q2 | 01 Jul 2022 | Arm | See [Changes between ACLE Q1 2021 and ACLE Q2 2022](#changes-between-acle-q1-2022-and-acle-q2-2022) |
| 2022Q4 | 23 November 2022 | Arm | See [Changes between ACLE Q2 2022 and ACLE Q4 2022](#changes-between-acle-q2-2022-and-acle-q4-2022) |
| 2023Q2 | 04 August 2023 | Arm | See [Changes between ACLE Q4 2022 and ACLE Q2 2023](#changes-between-acle-q4-2022-and-acle-q2-2023) |

#### Changes between ACLE Q2 2017 and ACLE Q2 2018

Expand Down Expand Up @@ -328,7 +329,7 @@ Armv8.4-A [[ARMARMv84]](#ARMARMv84). Support is added for the Dot Product intrin
* Renamed the feature macro to `__HAVE_FUNCTION_MULTI_VERSIONING`
* Added some clarifications.

#### Changes for next release
#### Changes between ACLE Q4 2022 and ACLE Q2 2023

* Added SLC as a valid Cache Level for the Memory prefetch intrinsics.
* Added [support for 128-bit system registers](#special-register-intrinsics),
Expand Down Expand Up @@ -1552,13 +1553,13 @@ the usage of these instructions in inline assembly.

If defined, the value of `__ARM_FEATURE_RCPC` remains consistent with the decimal
value of `LRCPC` field (bits [23:20]) in the `ID_AA64ISAR1_EL1` register.
For convenience these are reproduced here:
For convenience these are shown below:

| **Value** | **Feature** | **Instructions** | **Availability** |
| --------- | ----------- | ------------------------------- | ------------------------- |
| 1 | FEAT_LRCPC | LDAPR* instructions | Armv8.3, optional Armv8.2 |
| 2 | FEAT_LRCPC2 | LDAPUR* and STLUR* instructions | Armv8.4, optional Armv8.2 |
| 3 | FEAT_LRCPC3 | See FEAT_LRCPC3 documentation. | Armv8.9, optional Armv8.2 |
| 3 | FEAT_LRCPC3 | See FEAT_LRCPC3 documentation | Armv8.9, optional Armv8.2 |

The `__ARM_FEATURE_RCPC` macro can only be implemented in the AArch64
execution state.
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9 changes: 7 additions & 2 deletions neon_intrinsics/advsimd.md
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---
title: Arm Neon Intrinsics Reference
version: 2021Q4
date-of-issue: 11 January 2022
version: 2023Q2
date-of-issue: 04 August 2023
# LaTeX specific variables
landscape: true
copyright-text: "Copyright: see section \\texorpdfstring{\\nameref{copyright}}{Copyright}."
Expand Down Expand Up @@ -124,6 +124,7 @@ for more information about Arm’s trademarks.
| H | 02 July 2021 | 2021Q2 |
| I | 30 September 2021 | 2021Q3 |
| J | 11 January 2022 | 2021Q4 |
| K | 04 August 2023 | 2023Q2 |

### Changes between 2021Q2 and 2021Q3

Expand All @@ -141,6 +142,10 @@ for more information about Arm’s trademarks.
* Added missing item for release 2021Q3 in the table with the list of
versions in section [Document history](#document-history).

### Changes between 2021Q4 and 2023Q2

* Added support for FEAT_LRCPC3 LDAP1/STL1 intrinsics.

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9 changes: 7 additions & 2 deletions neon_intrinsics/advsimd.template.md
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---
title: Arm Neon Intrinsics Reference
version: 2021Q4
date-of-issue: 11 January 2022
version: 2023Q2
date-of-issue: 04 August 2023
# LaTeX specific variables
landscape: true
copyright-text: "Copyright: see section \\texorpdfstring{{\\nameref{{copyright}}}}{{Copyright}}."
Expand Down Expand Up @@ -124,6 +124,7 @@ for more information about Arm’s trademarks.
| H | 02 July 2021 | 2021Q2 |
| I | 30 September 2021 | 2021Q3 |
| J | 11 January 2022 | 2021Q4 |
| K | 04 August 2023 | 2023Q2 |

### Changes between 2021Q2 and 2021Q3

Expand All @@ -141,6 +142,10 @@ for more information about Arm’s trademarks.
* Added missing item for release 2021Q3 in the table with the list of
versions in section [Document history](#document-history).

### Changes between 2021Q4 and 2023Q2

* Added support for FEAT_LRCPC3 LDAP1/STL1 intrinsics.

<!---
**** Do not remove! ****
The line following this comment is necessary to generate custom geometry settings
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