svn commit: r360463 - head/libexec/rtld-elf

[Michal Meloun]

On 29.04.2020 17:20, Konstantin Belousov wrote:
> On Wed, Apr 29, 2020 at 02:06:42PM +0000, Michal Meloun wrote:
>> Author: mmel
>> Date: Wed Apr 29 14:06:42 2020
>> New Revision: 360463
>> URL: https://svnweb.freebsd.org/changeset/base/360463
>>
>> Log:
>>   Don't allow to use FPU inside of rtld library.
>>   Clang10 may use FPU instructions for optimizing operations with
>>   memory blocks. But we don't want to do lengthy save/restore of all
>>   FPU registers across each rtld_start() call.
>>   
>>   MFC after:	3 week
>>
>> Modified:
>>   head/libexec/rtld-elf/Makefile
>>
>> Modified: head/libexec/rtld-elf/Makefile
>> ==============================================================================
>> --- head/libexec/rtld-elf/Makefile	Wed Apr 29 13:45:21 2020	(r360462)
>> +++ head/libexec/rtld-elf/Makefile	Wed Apr 29 14:06:42 2020	(r360463)
>> @@ -48,6 +48,9 @@ MLINKS?=	rtld.1 ld-elf.so.1.1 \
>>  		rtld.1 ld.so.1
>>  
>>  CFLAGS+=	-fpic -DPIC $(DEBUG)
>> +CFLAGS.armv6+=	-mfpu=none
>> +CFLAGS.armv7+=	-mfpu=none
> I cleaned rtld-elf/Makefile of all MD bits, please move this to
> arm/Makefile.inc.
> 
Done in r360469.
arm/Makefile.inc is, of course,  much better place for these flags.
Thanks for pointing me me on this.
Michal

>> +	
>>  LDFLAGS+=	-shared -Wl,-Bsymbolic -Wl,-z,defs -nostdlib -e ${RTLD_ENTRY}
>>  # Pull in the dependencies that we use from libc
>>  .include "rtld-libc/Makefile.inc"