Date: Sun, 4 Mar 2012 00:40:06 -0800 From: Tim Kientzle <tim@kientzle.com> To: Stanislav Sedov <stas@freebsd.org> Cc: "arm@freebsd.org" <arm@freebsd.org> Subject: Re: native toolchain for freestanding apps Message-ID: <EE178EB5-3469-405A-9938-9ADE3B771F02@kientzle.com> In-Reply-To: <3206B98F-E9F1-4758-9741-AF29FE7CCBFA@kientzle.com> References: <23CB6C35-9450-40BA-9FA3-37C44B328CA8@freebsd.org> <CABt%2Bj0mB4w==h_SQ4YyDM24_wGOjcdZDK9T1N3DqjSkap0VkQw@mail.gmail.com> <E8A24EBE-967D-44F8-A884-3207B3C6F0FE@bsdimp.com> <8042D895-3B3D-431E-ADCC-A150BDC838ED@kientzle.com> <890D6B89-8031-496C-A5A2-A2836369F765@FreeBSD.org> <A68B207A-2754-4222-A30B-FDBD143A03D5@kientzle.com> <88338819-70CF-4BA7-92AE-95864F159FF4@FreeBSD.org> <3206B98F-E9F1-4758-9741-AF29FE7CCBFA@kientzle.com>
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On Mar 3, 2012, at 7:23 PM, Tim Kientzle wrote:
> On Mar 3, 2012, at 5:29 PM, Stanislav Sedov wrote:
>> On Mar 3, 2012, at 11:03 AM, Tim Kientzle <tim@kientzle.com> wrote:
>>>
>>> 2) Missing div/mod functions in ARM libgcc.
>>>
>>
>> Hmm, maybe they are disabled because libc supplies them?
>
> If I copy the various div/mod object files from libc.a into
> libgcc.a, then u-boot compiles ...
>
> Is there any compelling reason they can't be in both places?
Here's the patch for libcompiler_rt (aka libgcc.a) that just includes
an extra copy of the numeric routines (duplicating the ones in libc).
With this, I'm now able to build u-boot (and other freestanding
programs) using the FreeBSD xdev tools on ARM.
Any comments?
Index: lib/libcompiler_rt/Makefile
===================================================================
--- lib/libcompiler_rt/Makefile (revision 232481)
+++ lib/libcompiler_rt/Makefile (working copy)
@@ -126,8 +126,8 @@
umoddi3 \
umodti3
-# These are already shipped by libc.a on arm and mips
-.if ${MACHINE_CPUARCH} != "arm" && ${MACHINE_CPUARCH} != "mips"
+# These are already shipped by libc.a on mips
+.if ${MACHINE_CPUARCH} != "mips"
SRCF+= adddf3 \
addsf3 \
divdf3 \
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