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patterns/includes: Update standard library and patterns to support the new bitfields (#102)

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* Add `current_bit_offset()` and `read_bits(...)` to `std::mem`

* Replace deprecated BitfieldOrder enum values with new clearer names

This adds new options named `MostToLeastSignificant` and `LeastToMostSignificant` to replace the old `LeftToRight` and `RightToLeft` names. These names should be much clearer about what they affect and how.

* Throw errors when `std::core::(get|set)_bitfield_order()` are called

* Update all patterns to work with the new bitfield behaviors
This commit is contained in:
Zaggy1024
2023-04-01 04:16:54 -05:00
committed by GitHub
parent d42b87d9e6
commit 1cd7f92a5d
23 changed files with 2482 additions and 2433 deletions
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11
patterns/zstd.hexpat
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@@ -1,11 +1,14 @@
// https://github.com/facebook/zstd/blob/dev/doc/zstd_compression_format.md
#pragma MIME application/zstd
#include <std/core.pat>
#include <std/io.pat>
#include <std/mem.pat>
#include <std/sys.pat>
using BitfieldOrder = std::core::BitfieldOrder;
#define ZSTD_MAGIC_NUMBER 0xFD2FB528
bitfield frame_header_descriptor_t {
@@ -15,12 +18,12 @@ bitfield frame_header_descriptor_t {
reserved_bit : 1;
content_checksum_flag : 1;
dictionary_id_flag : 2;
} [[left_to_right]];
} [[bitfield_order(BitfieldOrder::MostToLeastSignificant, 8)]];
bitfield window_descriptor_t {
exponent : 5;
mantissa : 3;
} [[left_to_right]];
} [[bitfield_order(BitfieldOrder::MostToLeastSignificant, 8)]];
fn window_size(window_descriptor_t window_descriptor) {
u64 window_log = 10 + window_descriptor.exponent;
@@ -67,7 +70,7 @@ bitfield block_header_t {
last_block : 1;
block_type : 2;
block_size : 21;
} [[right_to_left]];
};
enum block_type : u8 {
raw_block = 0,