From 71c1658a7d55779c117c8608d72a4011b02d34d4 Mon Sep 17 00:00:00 2001 From: jhb Date: Thu, 16 Jul 2020 22:01:01 +0000 Subject: [PATCH] Include FreeBSD ABI tag note in the ELF runtime loader. Reviewed by: kib Sponsored by: DARPA Differential Revision: https://reviews.freebsd.org/D25306 --- libexec/rtld-elf/Makefile | 4 +++- libexec/rtld-elf/rtld.c | 13 ------------- 2 files changed, 3 insertions(+), 14 deletions(-) diff --git a/libexec/rtld-elf/Makefile b/libexec/rtld-elf/Makefile index 23a0f99af2c..40ad7a7ffc2 100644 --- a/libexec/rtld-elf/Makefile +++ b/libexec/rtld-elf/Makefile @@ -17,6 +17,7 @@ PROG?= ld-elf.so.1 TAGS+= lib32 .endif SRCS= \ + crtbrand.S \ rtld_start.S \ reloc.c \ rtld.c \ @@ -29,6 +30,7 @@ SRCS= \ libmap.c MAN?= rtld.1 CSTD?= gnu99 +ACFLAGS+= -DLOCORE CFLAGS+= -Wall -DFREEBSD_ELF -DIN_RTLD -ffreestanding CFLAGS+= -I${SRCTOP}/lib/csu/common .if exists(${RTLD_ELF_DIR}/${MACHINE_ARCH}) @@ -75,7 +77,7 @@ beforeinstall: -chflags -h noschg ${DESTDIR}/usr/libexec/${PROG} .endif -.PATH: ${RTLD_ELF_DIR}/${RTLD_ARCH} +.PATH: ${RTLD_ELF_DIR}/${RTLD_ARCH} ${SRCTOP}/lib/csu/common .if ${.CURDIR} == ${RTLD_ELF_DIR} HAS_TESTS= diff --git a/libexec/rtld-elf/rtld.c b/libexec/rtld-elf/rtld.c index e15aee68ace..48de9506154 100644 --- a/libexec/rtld-elf/rtld.c +++ b/libexec/rtld-elf/rtld.c @@ -470,19 +470,6 @@ _rtld(Elf_Addr *sp, func_ptr_type *exit_proc, Obj_Entry **objp) } direct_exec = true; - /* - * Set osrel for us, it is later reset to the binary' - * value before first instruction of code from the binary - * is executed. - */ - mib[0] = CTL_KERN; - mib[1] = KERN_PROC; - mib[2] = KERN_PROC_OSREL; - mib[3] = getpid(); - osrel = __FreeBSD_version; - sz = sizeof(old_osrel); - (void)sysctl(mib, 4, &old_osrel, &sz, &osrel, sizeof(osrel)); - dbg("opening main program in direct exec mode"); if (argc >= 2) { rtld_argc = parse_args(argv, argc, &search_in_path, &fd, &argv0); -- 2.45.0