Cortex M Rt Versions Save

Fixed

• Linker template now takes and discard *(.ARM.exidx)

Changed

• Macros now generate a second trampoline function instead of randomizing the function's symbol name. This makes the build deterministic.
• [breaking-change] static mut resources no longer have 'static lifetime except in the #[entry] function (this is a soundness fix; see #212).

Fixed

• Fixed lint warnings getting emitted on macro-generated code.

Fixed

• (ARMv6-M) Set LR value to a known value on reset (as the ARM spec requires)
• Added CFI and size info to external assembly subroutines (HardFaultTrampoline)

Fixed

• Backport: Allow building the crate for macOS targets (#306, #310).

Fixed

• Backport: Mark .bss as NOLOAD (#265)
• Backport: Fix possible overflow of .data region (#286)
• Backport: Perform volatile reads of ICSR in DefaultHandler (#315)

Other

• Backport: Use links in Cargo.toml to prevent multiple linking of cortex-m-rt (#276)
• Backport: Use same verison for macros crate as for cortex-m-rt itself (#245)

New Features

• Add support for CMSE secure gateway veneers (#297).
• Allow using the crate with custom target JSON specs (#304).
• Export Exception enum for other crates to use (#224).

Fixes

• Various fixes to the linker script (#265, #286, #287, #323).
• Use the correct ABI for the main symbol (#278).
• Add barriers after FPU enabling (#279).
• (ARMv6-M) Set LR value to a known value on reset (#293).
• Added CFI and size info to external assembly subroutines (HardFaultTrampoline and FpuTrampoline) (#294).
• Allow building the crate for macOS targets (#306, #310).
• Perform RAM initialization in assembly, to avoid potential UB in Rust (#301).
• Perform volatile reads of ICSR in DefaultHandler (#315).

Breaking Changes

• Make ExceptionFrames fields private, adding setters and getters instead (#239).
• Only allow certain attributes on handlers, and apply them to the trampoline too (#228).
• Make it unsafe to define exception handlers for NMIs (#289).
• Check that exceptions exist on the target chip when registering a handler for them (#308).

Other

• Change macros crate to use same version number as cortex-m-rt crate (#245).
• Discourage use of pre_init in documentation (#248).
• Backport: Use links in Cargo.toml to prevent multiple linking of cortex-m-rt (#276).

Fixes

• Fix stack unwinding past Reset function (#337)