Add `armv7a-vex-v5` tier three target#131530

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max-niederman wants to merge 72 commits intorust-lang:masterfrom

vexide:armv7a-vex-v5

Commits on Jan 25, 2025

add armv7a-vex-v5 target

max-niederman
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tropicaaal
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add (shimmed) std support for armv7a-vex-v5

max-niederman
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add panic, stdio, and alloc support to armv7a-vex-v5

max-niederman
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fix linker script and call main

max-niederman
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zero out bss section in _start

max-niederman
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use static TLS implementation on vexos

max-niederman
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make minor improvements to linker script

max-niederman
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enable stdio and fix stdout flushing

max-niederman
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add: `Instant` implementation

Gavin-Niederman
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remove broken cleanup

max-niederman
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fix `.code_signature` section error
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move `.code_signature` section into `.text`
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adjust `armv7a-vex-v5` target features for more aggressive hardware optimization
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switch `llvm_target` to use ARM hard-float abi
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add `env` implementation for `vexos` PAL
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feat: experimental fs support

Gavin-Niederman
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add support for more missing file operations
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feat: file writes vectored writes and vectored reads

Gavin-Niederman
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add helper for mapping FRESULT values
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add: try_file_exists and stat

Gavin-Niederman
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add: fileattr functions

Gavin-Niederman
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fix: check current position in file when getting size

Gavin-Niederman
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refactor: pseudorandom hashmap keys

Gavin-Niederman
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fix: support File::file_attr and dissalow read and write mode at the same time

Gavin-Niederman
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feat: seek implementation

Gavin-Niederman
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feat: almost working directory reading

Gavin-Niederman
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fix: remove trailing slashes sooner

Gavin-Niederman
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remove test code and document filesystem quirks
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add default code signature, ensure stdout flush
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add platform docs
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adjust wording and fix typos in target documentation
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update PAL and add `check-cfg` override for `target_os`
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add additional information to target spec and supporting docs
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fix `EXE_SUFFFIX` to use dot
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fix: use correct code signature default values
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don't compile with `+thumb-mode` feature for now
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properly flush serial on abort
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clarify documentation regarding cargo-v5, adjust `SystemTime` panic message
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use aapcs as system abi

max-niederman
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fix stack corruptions in startup routine

max-niederman
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fix thread locals

max-niederman
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implement (shimmed) std::random

max-niederman
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fix allocation

max-niederman
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update linkerscript to include unwinding-related sections
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format target doc and reorder maintainer list

max-niederman
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bump vex-sdk version and allow vex-sdk to be a stdlib dep

max-niederman
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add assembly test for armv7a-vex-v5

max-niederman
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add armv7a-vex-v5 target docs to summary

max-niederman
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better document the is_like_vexos property of TargetOptions

max-niederman
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detail summary of armv7a-vex-v5's target support

max-niederman
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add more descriptive comments to the `armv7a-vex-v5` linkerscript
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add `"v5"` target env armv7a-vex-v5 target spec
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implement `Stderr` in vexos PAL
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run VEXos cpu1 scheduler while waiting for abort
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update to `vex-sdk` 0.23.0
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add rudimentary implementation of `Thread::sleep` and `Thread::yield_now` on armv7a-vex-v5
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fix broken reference to Instant in pal

max-niederman
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switch to `+vfp3d16` LLVM feature in `armv7a-vex-v5`
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fix and clean up comments surrounding file seeking
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add private unit to all pub fs types in vexos PAL
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treat all `io::Error`s as non-EBADF in vexos
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adjust error message for `FRESULT::FR_INT_ERR`
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bump `vex-sdk` to 0.26.0
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update libstd lockfile
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fix circular dependency on cc-rs using a temporary patched version of cc-rs

max-niederman
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add unsupported file_lock functions

max-niederman
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fix mistakes in fs PAL

max-niederman
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add `llvm_floatabi` to armv7a-vex-v5 spec
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serialize `is_like_vexos` in target json specs

lewisfm
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ensure `arm` arch before adjusting VEXos system ABI to `aapcs`

lewisfm
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bless tests, add `armv7a-vex-v5` to assembly tests
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Commits on Jan 26, 2025

backlink to relevant cleanup issues in FIXMEs
tropicaaal
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