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mirror of https://github.com/esp8266/Arduino.git synced 2025-05-11 04:01:30 +03:00
Earle F. Philhower, III ac25f3276f
Upgrade to 2.5.0-4 toolchain w/improved pgm_read_x, C++ exceptions ()
* 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 
Fixes 
Fixes 
2019-07-21 10:46:29 -07:00
..
2016-06-23 17:27:57 +08:00
2017-10-15 14:59:37 +08:00
2018-02-22 14:11:43 +03:00

Updating SDK libraries

  • Copy .a files from SDK lib directory to this directory
  • Run fix_sdk_libs.sh

Updating libstdc++

After building gcc using crosstool-NG, get compiled libstdc++ and remove some objects:

xtensa-lx106-elf-ar d libstdc++.a pure.o
xtensa-lx106-elf-ar d libstdc++.a vterminate.o
xtensa-lx106-elf-ar d libstdc++.a guard.o
xtensa-lx106-elf-ar d libstdc++.a functexcept.o
xtensa-lx106-elf-ar d libstdc++.a del_op.o
xtensa-lx106-elf-ar d libstdc++.a del_opv.o
xtensa-lx106-elf-ar d libstdc++.a new_op.o
xtensa-lx106-elf-ar d libstdc++.a new_opv.o