Commit graph

7 commits

Author SHA1 Message Date
Angus Gratton
db6a30b446 Merge branch 'bugfix/libgcc_fpu_functions' into 'master'
esp32: Use FPU for floating point divide, power, complex multiplications

See merge request idf/esp-idf!5005
2019-06-04 08:41:58 +08:00
Angus Gratton
d9a5c8f387 esp32: Use FPU for floating point divide, power, complex multiplications
* Linker was choosing ROM symbols for these, which use integer soft-float
  operations and are much slower.
* _divsf3() moved to IRAM to avoid regressions with any code that does
  integer float division in IRAM interrupt handlers (+88 bytes IRAM)
* Thanks to michal for reporting:
  https://esp32.com/viewtopic.php?f=14&t=10540&p=43367
2019-05-29 10:14:31 +10:00
Angus Gratton
22514c1dd9 cmake: For gcc8 use linker to find paths to libc, libm, libstdc++, etc
Removes the need to know/guess the paths to these libraries. Once we are gcc 8 only, we
can remove -nostdlib and no additional arguments are needed for system libraries.

The catch is: any time IDF overrides a symbol in the toolchain sysroot, we need
an undefined linker marker to make sure this symbol is seen by linker.
2019-05-28 12:54:37 +08:00
Ivan Grokhotkov
5719cd6fac newlib: when compiling with GCC8, use newlib headers and libraries from toolchain 2019-04-10 13:52:30 +08:00
Ivan Grokhotkov
8c2f2867d8 esp_rom: don’t include locale functions when compiling with newlib 3 2019-04-10 13:52:30 +08:00
Ivan Grokhotkov
e84b26f531 esp_rom: export newlib functions as strong symbols 2019-04-10 13:52:30 +08:00
morris
c159984264 separate rom from esp32 component to esp_rom
1. separate rom include files and linkscript to esp_rom
2. modefiy "include rom/xxx.h" to "include esp32/rom/xxx.h"
3. Forward compatible
4. update mqtt
2019-03-21 18:51:45 +08:00