Bug 1600938

Summary:	Add riscv32 to cross-binutils
Product:	[Fedora] Fedora	Reporter:	Richard W.M. Jones <rjones>
Component:	cross-binutils	Assignee:	David Howells <dhowells>
Status:	CLOSED NOTABUG	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	rawhide	CC:	dan, dhowells, lkundrak
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Last Closed:	2018-07-13 13:46:59 UTC	Type:	Bug
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
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Bug Blocks:	1600939

Description Richard W.M. Jones 2018-07-13 12:42:07 UTC

Description of problem:

Please add riscv32 to cross-binutils.  This is useful for a couple
of targets:

(1) PicoRV32: I have confirmed that a self-compiled cross-gcc can
build working binaries for this target.

(2) Embedded firmware: Most planned RV64 machines will include
extra RV32 cores for various power management and I/O tasks.
The firmware for these is open source, but we don't have a way
to compile it.

My suggested patch is here, but basically all I did was add
extra lines matching the riscv64 ones.

https://bugzilla.redhat.com/show_bug.cgi?id=1492341#c5

Comment 1 David Howells 2018-07-13 13:16:19 UTC

I presume you can't use the riscv64 tools for riscv32?

Comment 2 David Howells 2018-07-13 13:28:16 UTC

Also, are you okay waiting for binutils-2.31 to come along if that's only a few days?  I could upgrade cross-binutils to that and do this at the same time then.

Comment 3 Richard W.M. Jones 2018-07-13 13:42:32 UTC

(In reply to David Howells from comment #1)
> I presume you can't use the riscv64 tools for riscv32?

This is a very good point.  I'm going to test it and get back.

Comment 4 Richard W.M. Jones 2018-07-13 13:46:59 UTC

Yes we can use the riscv64 compiler, so I'm closing this bug.

For the record you have to add these flags:
-march=rv32i -mabi=ilp32