Date: Thu, 31 Mar 2016 18:52:00 +0000 (UTC) From: Ed Schouten <ed@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r297470 - in head/sys: amd64/cloudabi64 arm64/cloudabi64 compat/cloudabi64 Message-ID: <201603311852.u2VIq0Xh004278@repo.freebsd.org>
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Author: ed Date: Thu Mar 31 18:52:00 2016 New Revision: 297470 URL: https://svnweb.freebsd.org/changeset/base/297470 Log: Make Position Independent Executables work for CloudABI. - Set BI_CAN_EXEC_DYN, so we can execute ET_DYN ELF files in addition to regular ET_EXECs. - Provide an AT_BASE entry in the auxiliary vector, so the executable knows at which address it got loaded and can apply relocations. Modified: head/sys/amd64/cloudabi64/cloudabi64_sysvec.c head/sys/arm64/cloudabi64/cloudabi64_sysvec.c head/sys/compat/cloudabi64/cloudabi64_module.c Modified: head/sys/amd64/cloudabi64/cloudabi64_sysvec.c ============================================================================== --- head/sys/amd64/cloudabi64/cloudabi64_sysvec.c Thu Mar 31 18:50:52 2016 (r297469) +++ head/sys/amd64/cloudabi64/cloudabi64_sysvec.c Thu Mar 31 18:52:00 2016 (r297470) @@ -156,5 +156,6 @@ Elf64_Brandinfo cloudabi64_brand = { .brand = ELFOSABI_CLOUDABI, .machine = EM_X86_64, .sysvec = &cloudabi64_elf_sysvec, + .flags = BI_CAN_EXEC_DYN, .compat_3_brand = "CloudABI", }; Modified: head/sys/arm64/cloudabi64/cloudabi64_sysvec.c ============================================================================== --- head/sys/arm64/cloudabi64/cloudabi64_sysvec.c Thu Mar 31 18:50:52 2016 (r297469) +++ head/sys/arm64/cloudabi64/cloudabi64_sysvec.c Thu Mar 31 18:52:00 2016 (r297470) @@ -157,5 +157,6 @@ Elf64_Brandinfo cloudabi64_brand = { .brand = ELFOSABI_CLOUDABI, .machine = EM_AARCH64, .sysvec = &cloudabi64_elf_sysvec, + .flags = BI_CAN_EXEC_DYN, .compat_3_brand = "CloudABI", }; Modified: head/sys/compat/cloudabi64/cloudabi64_module.c ============================================================================== --- head/sys/compat/cloudabi64/cloudabi64_module.c Thu Mar 31 18:50:52 2016 (r297469) +++ head/sys/compat/cloudabi64/cloudabi64_module.c Thu Mar 31 18:52:00 2016 (r297470) @@ -99,6 +99,7 @@ cloudabi64_fixup(register_t **stack_base #define PTR(type, ptr) { .a_type = (type), .a_ptr = (uintptr_t)(ptr) } PTR(CLOUDABI_AT_ARGDATA, argdata), VAL(CLOUDABI_AT_ARGDATALEN, argdatalen), + VAL(CLOUDABI_AT_BASE, args->base), PTR(CLOUDABI_AT_CANARY, canary), VAL(CLOUDABI_AT_CANARYLEN, sizeof(canarybuf)), VAL(CLOUDABI_AT_NCPUS, mp_ncpus),
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