Upgrade to 2.5.0-4 toolchain w/improved pgm_read_x, C++ exceptions (#6273)

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* Upgrade to 2.5.0-4 toolchain w/improved pgm_read_x

Rebuild the entire toolchain (including standard libraries) with the
latest pgm_read_xxx headers included (which fix unaligned dword reads
from progmem and run faster/smaller, and a pgm_read_byte change which
removes an instruction on each read saving flash).

Pull in latest bearssl while we're at it, too, which speeds up EC
handshakes and reduced ROM usage, too.

* Fix C++ exceptions

Exception code now only does 32b aligned reads from progmem to access
the eh_table (some via -mforce-l32, some via hand-inserted pgm_read_x
macros).

Fixes #6151
Fixes #6305
Fixes #6198

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This commit is contained in:

Earle F. Philhower, III

2019-07-21 10:46:29 -07:00

committed by GitHub

parent 5cb82c1610

commit ac25f3276f

19 changed files with 96 additions and 89 deletions

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