Date: Sun, 6 Mar 2016 00:31:11 +0000 (UTC) From: Konstantin Belousov <kib@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r296419 - head/sys/kern Message-ID: <201603060031.u260VBSb027532@repo.freebsd.org>
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Author: kib Date: Sun Mar 6 00:31:11 2016 New Revision: 296419 URL: https://svnweb.freebsd.org/changeset/base/296419 Log: In the link_elf_obj.c, handle sections of type SHT_AMD64_UNWIND same as SHT_PROGBITS. This is needed after the clang 3.8 import, which generates that type for .eh_frame section, which had SHT_PROGBITS type before. Reported by: Nikolai Lifanov <lifanov@mail.lifanov.com> PR: 207729 Tested by: dim (previous version) Sponsored by: The FreeBSD Foundation MFC after: 2 weeks Modified: head/sys/kern/link_elf_obj.c Modified: head/sys/kern/link_elf_obj.c ============================================================================== --- head/sys/kern/link_elf_obj.c Sat Mar 5 21:10:34 2016 (r296418) +++ head/sys/kern/link_elf_obj.c Sun Mar 6 00:31:11 2016 (r296419) @@ -257,6 +257,9 @@ link_elf_link_preload(linker_class_t cls switch (shdr[i].sh_type) { case SHT_PROGBITS: case SHT_NOBITS: +#ifdef __amd64__ + case SHT_AMD64_UNWIND: +#endif ef->nprogtab++; break; case SHT_SYMTAB: @@ -327,9 +330,16 @@ link_elf_link_preload(linker_class_t cls switch (shdr[i].sh_type) { case SHT_PROGBITS: case SHT_NOBITS: +#ifdef __amd64__ + case SHT_AMD64_UNWIND: +#endif ef->progtab[pb].addr = (void *)shdr[i].sh_addr; if (shdr[i].sh_type == SHT_PROGBITS) ef->progtab[pb].name = "<<PROGBITS>>"; +#ifdef __amd64__ + else if (shdr[i].sh_type == SHT_AMD64_UNWIND) + ef->progtab[pb].name = "<<UNWIND>>"; +#endif else ef->progtab[pb].name = "<<NOBITS>>"; ef->progtab[pb].size = shdr[i].sh_size; @@ -575,6 +585,9 @@ link_elf_load_file(linker_class_t cls, c switch (shdr[i].sh_type) { case SHT_PROGBITS: case SHT_NOBITS: +#ifdef __amd64__ + case SHT_AMD64_UNWIND: +#endif ef->nprogtab++; break; case SHT_SYMTAB: @@ -681,6 +694,9 @@ link_elf_load_file(linker_class_t cls, c switch (shdr[i].sh_type) { case SHT_PROGBITS: case SHT_NOBITS: +#ifdef __amd64__ + case SHT_AMD64_UNWIND: +#endif alignmask = shdr[i].sh_addralign - 1; mapsize += alignmask; mapsize &= ~alignmask; @@ -748,6 +764,9 @@ link_elf_load_file(linker_class_t cls, c switch (shdr[i].sh_type) { case SHT_PROGBITS: case SHT_NOBITS: +#ifdef __amd64__ + case SHT_AMD64_UNWIND: +#endif alignmask = shdr[i].sh_addralign - 1; mapbase += alignmask; mapbase &= ~alignmask; @@ -760,6 +779,10 @@ link_elf_load_file(linker_class_t cls, c } } else if (shdr[i].sh_type == SHT_PROGBITS) ef->progtab[pb].name = "<<PROGBITS>>"; +#ifdef __amd64__ + else if (shdr[i].sh_type == SHT_AMD64_UNWIND) + ef->progtab[pb].name = "<<UNWIND>>"; +#endif else ef->progtab[pb].name = "<<NOBITS>>"; if (ef->progtab[pb].name != NULL && @@ -781,7 +804,11 @@ link_elf_load_file(linker_class_t cls, c } ef->progtab[pb].size = shdr[i].sh_size; ef->progtab[pb].sec = i; - if (shdr[i].sh_type == SHT_PROGBITS) { + if (shdr[i].sh_type == SHT_PROGBITS +#ifdef __amd64__ + || shdr[i].sh_type == SHT_AMD64_UNWIND +#endif + ) { error = vn_rdwr(UIO_READ, nd.ni_vp, ef->progtab[pb].addr, shdr[i].sh_size, shdr[i].sh_offset,
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