Hi Tom, On Fri, 20 Jun 2025 at 15:00, Tom Rini <[email protected]> wrote: > > On Fri, Jun 20, 2025 at 02:00:09PM -0400, Raymond Mao wrote: > > Hi Tom, > > > > On Fri, 20 Jun 2025 at 13:20, Tom Rini <[email protected]> wrote: > > > > > > On Fri, Jun 20, 2025 at 08:10:08AM -0700, Raymond Mao wrote: > > > > Introduce the implementation of udivti3 and udivmodti4 from LLVM > > > > compiler-rt builtins for building MbedTLS bignum module via Clang. > > > > > > > > Signed-off-by: Raymond Mao <[email protected]> > > > > --- > > > > lib/mbedtls/port/compiler-rt/LICENSE.TXT | 311 ++++++++++++++++++ > > > > lib/mbedtls/port/compiler-rt/README.txt | 11 + > > > > .../compiler-rt/lib/builtins/int_endianness.h | 114 +++++++ > > > > .../port/compiler-rt/lib/builtins/int_lib.h | 171 ++++++++++ > > > > .../port/compiler-rt/lib/builtins/int_types.h | 276 ++++++++++++++++ > > > > .../port/compiler-rt/lib/builtins/int_util.h | 47 +++ > > > > .../compiler-rt/lib/builtins/udivmodti4.c | 158 +++++++++ > > > > .../port/compiler-rt/lib/builtins/udivti3.c | 23 ++ > > > > 8 files changed, 1111 insertions(+) > > > > create mode 100644 lib/mbedtls/port/compiler-rt/LICENSE.TXT > > > > create mode 100644 lib/mbedtls/port/compiler-rt/README.txt > > > > create mode 100644 > > > > lib/mbedtls/port/compiler-rt/lib/builtins/int_endianness.h > > > > create mode 100644 lib/mbedtls/port/compiler-rt/lib/builtins/int_lib.h > > > > create mode 100644 > > > > lib/mbedtls/port/compiler-rt/lib/builtins/int_types.h > > > > create mode 100644 lib/mbedtls/port/compiler-rt/lib/builtins/int_util.h > > > > create mode 100644 > > > > lib/mbedtls/port/compiler-rt/lib/builtins/udivmodti4.c > > > > create mode 100644 lib/mbedtls/port/compiler-rt/lib/builtins/udivti3.c > > > > > > > > diff --git a/lib/mbedtls/port/compiler-rt/LICENSE.TXT > > > > b/lib/mbedtls/port/compiler-rt/LICENSE.TXT > > > > new file mode 100644 > > > > index 00000000000..5a79a1b9d5c > > > > --- /dev/null > > > > +++ b/lib/mbedtls/port/compiler-rt/LICENSE.TXT > > > > @@ -0,0 +1,311 @@ > > > > +============================================================================== > > > > +The LLVM Project is under the Apache License v2.0 with LLVM Exceptions: > > > > +============================================================================== > > > > + > > > > + Apache License > > > > + Version 2.0, January 2004 > > > > + http://www.apache.org/licenses/ > > > > > > I don't know that this is compatible for us. Looking at > > > https://www.apache.org/licenses/GPL-compatibility.html it talks about > > > how you can use it with GPLv3 (which we are *NOT*) but not GPLv2. > > > > > My bad didn't realize Apache 2.0 is not compatible with GPLv2... > > I am not sure but it seems that this incompatibility does not even > > allow static linking into a GPLv2 project. > > Then, how to make it possible to use LLVM? Can we upgrade to GPLv2+? > > However the linux kernel people do it, we can do it too. And perhaps > that's part of what's motivating LLVM to be able to disable these > intrinsics that we don't actually need? > OP-TEE did the same thing, it is GPLv2 too.
Raymond > -- > Tom
