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display page fault address in oopses, improve how page fault codes are displayed #420

Merged
merged 3 commits into from
Apr 9, 2023
Merged

display page fault address in oopses, improve how page fault codes are displayed #420

merged 3 commits into from
Apr 9, 2023

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hawkw
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@hawkw hawkw commented Apr 9, 2023

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hawkw added a commit that referenced this pull request Apr 9, 2023
@hawkw
feat(bitfield): add display_ascii to generated bitfields (#420)
aa6e82f 
The `fmt::Display` implementation for bitfields uses Unicode box-drawing
characters. In some contexts, where Unicode is not supported or
box-drawing characters are not rendered nicely, it may be desirable to
use an ASCII-only version of the multi-line format, instead. Therefore,
in addition to the `Display` implementation, this commit adds a new
generated `display_ascii` method to bitfield types. `display_ascii`
returns an `impl fmt::Display` value that renders the bitfield in an
ASCII-only version of the multi-line format.

The ASCII-only format also uses slightly fewer horizontal characters
than the Unicode box-drawing format, so it may also be useful in cases
where text fields have limited width.

For example:

```
00000000000000000011010110011110
..............................10 ENUM_VALUE: Baz
........................100111.. SOME_BITS: 39
.......................1........ FLAG_1: true
......................0......... FLAG_2: false
..............00001101.......... A_BYTE: 13
```

This was added primarily in order to allow displaying page fault error
codes nicely in mycelium's oops screen, because the `embedded_graphics`
crate doesn't render Unicode box-drawing characters.
hawkw added a commit that referenced this pull request Apr 9, 2023
@hawkw
feat(x86_64): display page fault address in oopses (#420)
d011cf1 
Debugging page faults in Mycelium is currently a bit difficult, because
the oops message doesn't display the virtual address at which the page
fault occurred. We can fix this quite easily by reading the `cr2`
control register, which contains the linear address of the page fault.
hawkw added a commit that referenced this pull request Apr 9, 2023
@hawkw
feat(bitfield): select Unicode format with Display alt-mode (#420)
84810d8 
This commit changes the generated bitfield types to default to using the
ASCII `fmt::Display` multi-line format, with the Unicode format
selectable using the alt-mode formatting specifier (`{:#}`). This is to
make it easier for downstream callers to select which format is used.

The `display_ascii()` method can be used to select ASCII only regardless
of a downstream caller's format specifier, and a similar
`display_unicode()` method is added to guarantee Unicode formatting.

I don't think this should be considered a breaking change, since
existing code will still compile, and I don't consider the output of
human-readable formats not intended for machine consumption to be part
of the semver API surface. But, it will change the default behavior...
@hawkw
feat(bitfield): add display_ascii to generated bitfields (#420)
1e92f6f 
The `fmt::Display` implementation for bitfields uses Unicode box-drawing
characters. In some contexts, where Unicode is not supported or
box-drawing characters are not rendered nicely, it may be desirable to
use an ASCII-only version of the multi-line format, instead. Therefore,
in addition to the `Display` implementation, this commit adds a new
generated `display_ascii` method to bitfield types. `display_ascii`
returns an `impl fmt::Display` value that renders the bitfield in an
ASCII-only version of the multi-line format.

The ASCII-only format also uses slightly fewer horizontal characters
than the Unicode box-drawing format, so it may also be useful in cases
where text fields have limited width.

For example:

```
00000000000000000011010110011110
..............................10 ENUM_VALUE: Baz
........................100111.. SOME_BITS: 39
.......................1........ FLAG_1: true
......................0......... FLAG_2: false
..............00001101.......... A_BYTE: 13
```

This was added primarily in order to allow displaying page fault error
codes nicely in mycelium's oops screen, because the `embedded_graphics`
crate doesn't render Unicode box-drawing characters.
@hawkw
feat(x86_64): display page fault address in oopses (#420)
806b170 
Debugging page faults in Mycelium is currently a bit difficult, because
the oops message doesn't display the virtual address at which the page
fault occurred. We can fix this quite easily by reading the `cr2`
control register, which contains the linear address of the page fault.
hawkw added a commit that referenced this pull request Apr 9, 2023
@hawkw
feat(bitfield): select Unicode format with Display alt-mode (#420)
e171e13 
This commit changes the generated bitfield types to default to using the
ASCII `fmt::Display` multi-line format, with the Unicode format
selectable using the alt-mode formatting specifier (`{:#}`). This is to
make it easier for downstream callers to select which format is used.

The `display_ascii()` method can be used to select ASCII only regardless
of a downstream caller's format specifier, and a similar
`display_unicode()` method is added to guarantee Unicode formatting.

I don't think this should be considered a breaking change, since
existing code will still compile, and I don't consider the output of
human-readable formats not intended for machine consumption to be part
of the semver API surface. But, it will change the default behavior...
@hawkw hawkw enabled auto-merge (rebase) April 9, 2023 19:07
@hawkw
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hawkw commented Apr 9, 2023 •
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PR #420, BLAZE IT 🍁🔥

@hawkw
feat(bitfield): select Unicode format with Display alt-mode (#420)
1e7e13d 
This commit changes the generated bitfield types to default to using the
ASCII `fmt::Display` multi-line format, with the Unicode format
selectable using the alt-mode formatting specifier (`{:#}`). This is to
make it easier for downstream callers to select which format is used.

The `display_ascii()` method can be used to select ASCII only regardless
of a downstream caller's format specifier, and a similar
`display_unicode()` method is added to guarantee Unicode formatting.

I don't think this should be considered a breaking change, since
existing code will still compile, and I don't consider the output of
human-readable formats not intended for machine consumption to be part
of the semver API surface. But, it will change the default behavior...
@hawkw hawkw merged commit a09d55b into main Apr 9, 2023
@hawkw hawkw deleted the eliza/page-fault-codes branch April 9, 2023 19:36
hawkw added a commit that referenced this pull request Apr 9, 2023
@hawkw
feat(bitfield): add display_ascii to generated bitfields (#420)
7842802 
The `fmt::Display` implementation for bitfields uses Unicode box-drawing
characters. In some contexts, where Unicode is not supported or
box-drawing characters are not rendered nicely, it may be desirable to
use an ASCII-only version of the multi-line format, instead. Therefore,
in addition to the `Display` implementation, this commit adds a new
generated `display_ascii` method to bitfield types. `display_ascii`
returns an `impl fmt::Display` value that renders the bitfield in an
ASCII-only version of the multi-line format.

The ASCII-only format also uses slightly fewer horizontal characters
than the Unicode box-drawing format, so it may also be useful in cases
where text fields have limited width.

For example:

```
00000000000000000011010110011110
..............................10 ENUM_VALUE: Baz
........................100111.. SOME_BITS: 39
.......................1........ FLAG_1: true
......................0......... FLAG_2: false
..............00001101.......... A_BYTE: 13
```

This was added primarily in order to allow displaying page fault error
codes nicely in mycelium's oops screen, because the `embedded_graphics`
crate doesn't render Unicode box-drawing characters.
hawkw added a commit that referenced this pull request Apr 9, 2023
@hawkw
feat(x86_64): display page fault address in oopses (#420)
ccb95d0 
Debugging page faults in Mycelium is currently a bit difficult, because
the oops message doesn't display the virtual address at which the page
fault occurred. We can fix this quite easily by reading the `cr2`
control register, which contains the linear address of the page fault.
hawkw added a commit that referenced this pull request Jul 23, 2023
@hawkw
chore(bitfield): prepare to release v0.1.3
3063b08 
## mycelium-bitfield-v0.1.3 - (2023-07-23)

[d0a6f13](https://github.com/hawkw/mycelium/d0a6f13cc53e0cd5dbd493b63ba0711fd06dc985)...[ab096b4](https://github.com/hawkw/mycelium/ab096b4bcf64beda092b3980ca32cb50ad4c2682)

### Added

- Generate `fmt::UpperHex` and `LowerHex`
  ([#292](#292))
  ([b6138c8](https://github.com/hawkw/mycelium/b6138c8b7b704c59e394fd5600c321d7eede0a46))
- Add `Pack::pair_with`
  ([#294](#294))
  ([47b08b7](https://github.com/hawkw/mycelium/47b08b7506712cf5664cf62bf5f0c72fa226a994))
- Add `Pair::pack_from_{src, dst}`
  ([#294](#294))
  ([48f48ca](https://github.com/hawkw/mycelium/48f48cab628c88edc4fa3ce6a045c522976a62e7))
- Skip `_` fields in `fmt::Debug`
  ([#375](#375))
  ([46ca526](https://github.com/hawkw/mycelium/46ca52615338f5341fd0006b56a20379a1a797de))
- Add `display_ascii` to generated bitfields
  ([#420](#420))
  ([7842802](https://github.com/hawkw/mycelium/7842802e1b52da0d7939c972b69964cddc4f875a))
- Select Unicode format with `Display` alt-mode
  ([#420](#420))
  ([a09d55b](https://github.com/hawkw/mycelium/a09d55b7dd81aed292ec8265ce28c8f70f0b293d))
- Add `enum_from_bits!` macro
  ([#450](#450))
  ([ab096b4](https://github.com/hawkw/mycelium/ab096b4bcf64beda092b3980ca32cb50ad4c2682),
  closes [#443](#443))

### Documented

- Fix main branch docs link
  ([#290](#290))
  ([4dbdf37](https://github.com/hawkw/mycelium/4dbdf376aab37ba88d48abf6c25ec2f386f62c44))
- Replace tables with bulleted lists
  ([#451](#451))
  ([10cd876](https://github.com/hawkw/mycelium/10cd8765964ce98e18787f7ba5c299ed7a11a86d))

### Fixed

- Remove recursion in `fmt::Binary`
  ([#292](#292))
  ([0488696](https://github.com/hawkw/mycelium/04886961ba460fceb662fdff8f80d481e54ed241))
- Don't have `fmt::alt` control struct formatting
  ([#292](#292))
  ([03055f0](https://github.com/hawkw/mycelium/03055f086dbdbb68be6cb2a6eef96ffa450df61c))
- Make `pair_with` work with other bitfields
  ([#295](#295))
  ([532ee98](https://github.com/hawkw/mycelium/532ee987e0eddd203fc7ff3698a4c9f36232c669))
- Make `Packing` work with typed specs
  ([#295](#295))
  ([7b86e81](https://github.com/hawkw/mycelium/7b86e811a77831f4745e2b9437b3125ac27be8c8))
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