freebsd-dev/lib/csu/powerpc64/Makefile

# $FreeBSD$

.PATH: ${.CURDIR:H}/common

OBJS+=		crtsavres.o
CFLAGS+=	-I${.CURDIR} \
		-mlongcall -DCRT_IRELOC_RELA

CLEANFILES+=	crtsavres.S

# On powerpc64 crtsavres is an empty file
crtsavres.S:
	touch ${.TARGET}

.include <bsd.lib.mk>
C startup support for 64-bit PowerPC. Obtained from: projects/ppc64 2010-07-10 03:45:55 +00:00			`# $FreeBSD$`

Use SRCTOP-relative paths and .CURDIR with :H instead of ".." specified paths This implifies pathing in make/displayed output MFC after: 3 weeks Sponsored by: Dell EMC Isilon 2017-01-20 03:52:16 +00:00			`.PATH: ${.CURDIR:H}/common`
C startup support for 64-bit PowerPC. Obtained from: projects/ppc64 2010-07-10 03:45:55 +00:00
Consolidate duplicated logic in csu Makefiles to lib/csu/Makefile.inc. Reviewed by: kib Sponsored by: DARPA Differential Revision: https://reviews.freebsd.org/D25537 2020-07-03 00:09:41 +00:00			`OBJS+= crtsavres.o`
			`CFLAGS+= -I${.CURDIR} \`
[PPC64] Add ifunc support in libcsu When ifuncs are used in statically linked binaries, the C runtime must perform the needed dynamic relocations, to make calls to ifuncs work correctly. Reviewed by: jhibbits Differential Revision: https://reviews.freebsd.org/D21070 2019-09-12 16:45:07 +00:00			`-mlongcall -DCRT_IRELOC_RELA`
C startup support for 64-bit PowerPC. Obtained from: projects/ppc64 2010-07-10 03:45:55 +00:00
Remove the sed hack for ABI tag notes. The ELF notes compiled in C were placed in a section with the wrong type (SHT_PROGBITS instead of SHT_NOTE). Previously, sed was used on the generated assembly to rewrite the section type. Instead, write the notes in assembly which permits setting the correct section type directly. While here, move inline assembly entry points out of C and into assembly for aarch64, arm, and riscv. Reviewed by: kib Tested on: amd64 (cirrus-ci), riscv64 Sponsored by: DARPA Differential Revision: https://reviews.freebsd.org/D25211 2020-06-15 19:38:48 +00:00			`CLEANFILES+= crtsavres.S`
Apply a workaround for a binutils issue with the .note.ABI-tag section generated from lib/csu/common/crtbrand.c (which ultimately ends up in executables and shared libraries, via crt1.o, gcrt1.o or Scrt1.o). For all arches except sparc, gcc emits the section directive for the abitag struct in crtbrand.c with a PROGBITS type. However, newer versions of binutils (after 2.16.90) require the section to be of NOTE type, to guarantee that the .note.ABI-tag section correctly ends up in the first page of the final executable. Unfortunately, there is no clean way to tell gcc to use another section type, so crtbrand.c (or the C files that include it) must be compiled in multiple steps: - Compile the .c file to a .s file. - Edit the .s file to change the 'progbits' type to 'note', for the section directive that defines the .note.ABI-tag section. - Compile the .s file to an object file. These steps are done in the invididual Makefiles for each applicable arch. Reviewed by: kib 2011-01-13 20:44:31 +00:00
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 2019-01-12 21:29:54 +00:00			`# On powerpc64 crtsavres is an empty file`
powerpc64/csu: Rename dummy asm file to force use of 'cc' Implicit make rules build .S asm files with the compiler, rather than the assembler. r356889 removed GNU as from the build for powerpc targets, causing '.s' asm files to fail to build, due to a missing 'as'. Rename the one dummy asm file we have to a '.S' to force the implicit rules to build with the compiler rather than the assembler. Reported by: Francis Little 2020-01-29 04:32:06 +00:00			`crtsavres.S:`
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 2019-01-12 21:29:54 +00:00			`touch ${.TARGET}`

C startup support for 64-bit PowerPC. Obtained from: projects/ppc64 2010-07-10 03:45:55 +00:00			`.include <bsd.lib.mk>`