suspect-devices/circuitpython/py/nlrthumb.c, branch main CircuitPython - a Python implementation for teaching coding with microcontrollers https://git.suspectdevices.com/suspect-devices/circuitpython/atom?h=main 2021-03-15T13:57:36+00:00 run code formatting script 2021-03-15T13:57:36+00:00 microDev 70126934+microDev1@users.noreply.github.com 2021-03-15T13:57:36+00:00 urn:sha1:a52eb88031620a81521b937f2a0651dbac2bb350 Add license to some obvious files. 2020-07-06T18:16:25+00:00 Diego Elio Pettenò flameeyes@flameeyes.com 2020-06-03T22:40:05+00:00 urn:sha1:34b4993d63a6b576f29d624385c681f679b4124c py/nlrthumb: Save and restore VFP registers s16-s21 when CPU has them. 2019-12-12T19:10:10+00:00 Damien George damien.p.george@gmail.com 2019-06-17T13:19:34+00:00 urn:sha1:767d47dd6025e8046b03e6b307fd0ba6a81cf504 These s16-s21 registers are used by gcc so need to be saved. Future versions of gcc (beyond v9.1.0), or other compilers, may eventually need additional registers saved/restored. See issue #4844. py: Introduce MP_UNREACHABLE macro to annotate unreachable code. 2019-12-12T19:01:39+00:00 Damien George damien.p.george@gmail.com 2019-08-19T05:50:02+00:00 urn:sha1:63046d800d64081a4f7756476f5249179179ff5e And use it to replace the same pattern at the end of nlrthumb.c:nlr_jump. WIP: after merge; before testing 2018-07-11T20:45:30+00:00 Dan Halbert halbert@halwitz.org 2018-07-11T20:45:30+00:00 urn:sha1:7c219600a246d8956d0b23ea3f5d125a820e6b6a py/nlrthumb: Fix Clang support wrt use of "return 0". 2018-04-27T05:10:42+00:00 Ayke van Laethem aykevanlaethem@gmail.com 2018-04-24T15:47:45+00:00 urn:sha1:deaa46aa66230071d355c0ffd004ccf0cbefd8b9 Clang defines __GNUC__ so we have to check for it specifically. py/nlrthumb: Do not mark nlr_push as not returning anything. 2018-02-18T00:35:27+00:00 Ayke van Laethem aykevanlaethem@gmail.com 2018-02-13T21:00:20+00:00 urn:sha1:5591bd237a69a3a1a6ac03cb1dc9edcde835f708 By adding __builtin_unreachable() at the end of nlr_push, we're essentially telling the compiler that this function will never return. When GCC LTO is in use, this means that any time nlr_push() is called (which is often), the compiler thinks this function will never return and thus eliminates all code following the call. Note: I've added a 'return 0' for older GCC versions like 4.6 which complain about not returning anything (which doesn't make sense in a naked function). Newer GCC versions (tested 4.8, 5.4 and some others) don't complain about this. Avoid gcc 7.2.1 compiler issues in nlr_push() (#506) 2018-01-02T21:41:34+00:00 Dan Halbert halbert@halwitz.org 2018-01-02T21:41:34+00:00 urn:sha1:ce81c8dda9686d3cd78d9c5383b6982c148ac7ec Avoid gcc 7.2.1 compiler issues in nlr_push() py/nlr: Factor out common NLR code to macro and generic funcs in nlr.c. 2017-12-28T05:46:30+00:00 Damien George damien.p.george@gmail.com 2017-12-28T05:46:30+00:00 urn:sha1:b25f92160b318a096c516c430afde5472a944c19 Each NLR implementation (Thumb, x86, x64, xtensa, setjmp) duplicates a lot of the NLR code, specifically that dealing with pushing and popping the NLR pointer to maintain the linked-list of NLR buffers. This patch factors all of that code out of the specific implementations into generic functions in nlr.c, along with a helper macro in nlr.h. This eliminates duplicated code. py/nlr: Clean up selection and config of NLR implementation. 2017-12-28T05:18:39+00:00 Damien George damien.p.george@gmail.com 2017-12-28T05:18:39+00:00 urn:sha1:5bf8e85fc828974199d469db711aa2f9649c467b If MICROPY_NLR_SETJMP is not enabled and the machine is auto-detected then nlr.h now defines some convenience macros for the individual NLR implementations to use (eg MICROPY_NLR_THUMB). This keeps nlr.h and the implementation in sync, and also makes the nlr_buf_t struct easier to read.