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Re: [PATCH] Re: sparc64-elf crt0.o fails to compile

From: Yaakov Selkowitz <yselkowi at redhat dot com>
Cc: "newlib at sourceware dot org" <newlib at sourceware dot org>
Date: Thu, 25 Dec 2014 23:29:43 -0600
Subject: Re: [PATCH] Re: sparc64-elf crt0.o fails to compile
Authentication-results: sourceware.org; auth=none
References: <549C6D6C dot 5010005 at redhat dot com> <CAC82fA14ROuoqV_T4A38Zpd_BgfBZ+o0TMbuewQQvNpT1Wu1Qw at mail dot gmail dot com> <549CE998 dot 3010702 at redhat dot com>

On 2014-12-25 22:52, Yaakov Selkowitz wrote:

On 2014-12-25 21:48, Gedare Bloom wrote:

Without looking at the source--this error refers to using a global
register other than g0 or g1 without "declaring" it as used. Most
often this presents as g2 or g3. The ABI restricts the use of global
registers. You need to add:

.register %g2, #scratch

to the top of the assembly file to specify that g2 is used in the
assembly.


OK, thanks for the hint.  I used the attached patch to get
newlib/libgloss to compile for sparc64-elf.

2014-12-25  Yaakov Selkowitz  <yselkowi@...>

	libgloss/
	* sparc/crt0.S: Declare use of system registers.
	* sparc/cygmon-crt0.S: Ditto.
	* sparc/erc32-crt0.S: Ditto.
	* sparc/traps.S: Ditto.

	newlib/
	* libc/sys/sparc64/sys/time.h: #include <time.h> for time_t.


Sorry, wrong patch, this should have been <sys/types.h>.

--
Yaakov Selkowitz
Associate Software Engineer, ARM
Red Hat, Inc.

References:
- sparc64-elf crt0.o fails to compile
  - From: Yaakov Selkowitz
- Re: sparc64-elf crt0.o fails to compile
  - From: Gedare Bloom
- [PATCH] Re: sparc64-elf crt0.o fails to compile
  - From: Yaakov Selkowitz

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