Date: Sat, 12 Jan 2019 21:29:54 +0000 (UTC) From: Justin Hibbits <jhibbits@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r342974 - in head: gnu/lib/csu lib/csu/powerpc lib/csu/powerpc64 Message-ID: <201901122129.x0CLTs3L080492@repo.freebsd.org>
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Author: jhibbits Date: Sat Jan 12 21:29:54 2019 New Revision: 342974 URL: https://svnweb.freebsd.org/changeset/base/342974 Log: Create crtsavres.o for powerpc builds Summary: GCC expects to link in a crtsavres.o on powerpc platforms. On powerpc64 this is an empty file, but on powerpc and powerpcspe this does contain some save/restore functions, which may not actually be necessary for newer modern GCC and clang. This appeases the in-tree gcc, though, and is needed in order to switch to the BSD CRTRBEGIN. PR: 233751 Reviewed By: andrew Differential Revision: https://reviews.freebsd.org/D18826 Added: head/lib/csu/powerpc/crtsavres.S (contents, props changed) Modified: head/gnu/lib/csu/Makefile head/lib/csu/powerpc/Makefile head/lib/csu/powerpc64/Makefile Modified: head/gnu/lib/csu/Makefile ============================================================================== --- head/gnu/lib/csu/Makefile Sat Jan 12 20:41:57 2019 (r342973) +++ head/gnu/lib/csu/Makefile Sat Jan 12 21:29:54 2019 (r342974) @@ -28,10 +28,6 @@ CRTS_CFLAGS= -DCRTSTUFFS_O -DSHARED ${PICFLAG} CFLAGS+= -DTARGET_ARM_EABI .endif -.if ${MACHINE_CPUARCH} == "powerpc" -TGTOBJS= crtsavres.o -SRCS+= crtsavres.asm -.endif .if ${MACHINE_CPUARCH} == "sparc64" TGTOBJS= crtfastmath.o SRCS+= crtfastmath.c Modified: head/lib/csu/powerpc/Makefile ============================================================================== --- head/lib/csu/powerpc/Makefile Sat Jan 12 20:41:57 2019 (r342973) +++ head/lib/csu/powerpc/Makefile Sat Jan 12 21:29:54 2019 (r342974) @@ -2,7 +2,7 @@ .PATH: ${.CURDIR:H}/common -SRCS= crt1.c crti.S crtn.S +SRCS= crt1.c crti.S crtn.S crtsavres.S OBJS= ${SRCS:N*.h:R:S/$/.o/g} OBJS+= Scrt1.o gcrt1.o CFLAGS+= -I${.CURDIR:H}/common \ Added: head/lib/csu/powerpc/crtsavres.S ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ head/lib/csu/powerpc/crtsavres.S Sat Jan 12 21:29:54 2019 (r342974) @@ -0,0 +1,191 @@ +/*- + * SPDX-License-Identifier: BSD-1-Clause + * + * Copyright 2019 Justin Hibbits + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include <machine/asm.h> +__FBSDID("$FreeBSD$"); + +.text + +/* + * The PowerPC ABI spec requires the following save/restore functions to be + * provided: + * + * _savefpr_N + * _restfpr_N + * _restfpr_N_x + * _savegpr_N + * _restgpr_N + * _restgpr_N_x + * + * With N ranging from 14 to 31, to save the nonvolatile registers. + */ + +#define _CRTENTRY(name) \ + .text; \ + .globl name; \ + .type name,@function; \ + name: + +#define SAVEFPR(r) _CRTENTRY(__CONCAT(_savefpr_,r)) \ + stfd r,(-256 + r * 8)(11) + +SAVEFPR(14) +SAVEFPR(15) +SAVEFPR(16) +SAVEFPR(17) +SAVEFPR(18) +SAVEFPR(19) +SAVEFPR(20) +SAVEFPR(21) +SAVEFPR(22) +SAVEFPR(23) +SAVEFPR(24) +SAVEFPR(25) +SAVEFPR(26) +SAVEFPR(27) +SAVEFPR(28) +SAVEFPR(29) +SAVEFPR(30) +SAVEFPR(31) + blr + +#define RESTFPR(r) _CRTENTRY(__CONCAT(_restfpr_,r)) \ + lfd r,(-256 + r * 8)(11) + +RESTFPR(14) +RESTFPR(15) +RESTFPR(16) +RESTFPR(17) +RESTFPR(18) +RESTFPR(19) +RESTFPR(20) +RESTFPR(21) +RESTFPR(22) +RESTFPR(23) +RESTFPR(24) +RESTFPR(25) +RESTFPR(26) +RESTFPR(27) +RESTFPR(28) +RESTFPR(29) +RESTFPR(30) +RESTFPR(31) + blr + +#define SAVEGPR(r) _CRTENTRY(__CONCAT(_savegpr_,r)) \ + stfd r,(-128 + r*4)(11) + +SAVEGPR(14) +SAVEGPR(15) +SAVEGPR(16) +SAVEGPR(17) +SAVEGPR(18) +SAVEGPR(19) +SAVEGPR(20) +SAVEGPR(21) +SAVEGPR(22) +SAVEGPR(23) +SAVEGPR(24) +SAVEGPR(25) +SAVEGPR(26) +SAVEGPR(27) +SAVEGPR(28) +SAVEGPR(29) +SAVEGPR(30) +SAVEGPR(31) + blr + +#define RESTGPR(r) _CRTENTRY(__CONCAT(_restgpr_,r)) \ + lwz r,(-128 + r*4)(11) + +RESTGPR(14) +RESTGPR(15) +RESTGPR(16) +RESTGPR(17) +RESTGPR(18) +RESTGPR(19) +RESTGPR(20) +RESTGPR(21) +RESTGPR(22) +RESTGPR(23) +RESTGPR(24) +RESTGPR(25) +RESTGPR(26) +RESTGPR(27) +RESTGPR(28) +RESTGPR(29) +RESTGPR(30) +RESTGPR(31) + blr + +#define RESTFPR_X(r) _CRTENTRY(__CONCAT(__CONCAT(_restfpr_,r),_x)) \ + lfd r,(-256 + r * 8)(11) + +RESTFPR_X(14) +RESTFPR_X(15) +RESTFPR_X(16) +RESTFPR_X(17) +RESTFPR_X(18) +RESTFPR_X(19) +RESTFPR_X(20) +RESTFPR_X(21) +RESTFPR_X(22) +RESTFPR_X(23) +RESTFPR_X(24) +RESTFPR_X(25) +RESTFPR_X(26) +RESTFPR_X(27) +RESTFPR_X(28) +RESTFPR_X(29) +RESTFPR_X(30) +RESTFPR_X(31) + lwz 0,4(11) + mtlr 0 + mr 1,11 + blr + +#define RESTGPR_X(r) _CRTENTRY(__CONCAT(__CONCAT(_restgpr_,r),_x)) \ + lwz r,(-128 + r*4)(11) + +RESTGPR_X(14) +RESTGPR_X(15) +RESTGPR_X(16) +RESTGPR_X(17) +RESTGPR_X(18) +RESTGPR_X(19) +RESTGPR_X(20) +RESTGPR_X(21) +RESTGPR_X(22) +RESTGPR_X(23) +RESTGPR_X(24) +RESTGPR_X(25) +RESTGPR_X(26) +RESTGPR_X(27) +RESTGPR_X(28) +RESTGPR_X(29) +RESTGPR_X(30) +RESTGPR_X(31) + lwz 0,4(11) + mtlr 0 + mr 1,11 + blr Modified: head/lib/csu/powerpc64/Makefile ============================================================================== --- head/lib/csu/powerpc64/Makefile Sat Jan 12 20:41:57 2019 (r342973) +++ head/lib/csu/powerpc64/Makefile Sat Jan 12 21:29:54 2019 (r342974) @@ -4,7 +4,7 @@ SRCS= crt1.c crti.S crtn.S OBJS= ${SRCS:N*.h:R:S/$/.o/g} -OBJS+= Scrt1.o gcrt1.o +OBJS+= crtsavres.o Scrt1.o gcrt1.o CFLAGS+= -I${.CURDIR:H}/common \ -I${SRCTOP}/lib/libc/include \ -mlongcall -DCRT_IRELOC_SUPPRESS @@ -18,7 +18,7 @@ FILESDIR= ${LIBDIR} .undef LIBRARIES_ONLY CLEANFILES= ${OBJS} -CLEANFILES+= crt1.s gcrt1.s Scrt1.s +CLEANFILES+= crt1.s crtsavres.s gcrt1.s Scrt1.s # See the comment in lib/csu/common/crtbrand.c for the reason crt1.c is not # directly compiled to .o files. @@ -26,6 +26,10 @@ CLEANFILES+= crt1.s gcrt1.s Scrt1.s crt1.s: crt1.c ${CC} ${CFLAGS} -S -o ${.TARGET} ${.CURDIR}/crt1.c sed ${SED_FIX_NOTE} ${.TARGET} + +# On powerpc64 crtsavres is an empty file +crtsavres.s: + touch ${.TARGET} crt1.o: crt1.s ${CC} ${CFLAGS:N-g} ${ACFLAGS} -c -o ${.TARGET} crt1.s
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