FreeBSD source tree https://cgit-dev.freebsd.org/src-test2/atom?h=release%2F11.3.0 2018-03-29T02:50:57Z 2018-03-29T02:50:57Z Eitan Adler eadler@FreeBSD.org 2018-03-29T02:50:57Z urn:sha1:4ab2e064d7950be84256d671a7ae93f87cc6aa36 This was intended to be a non-functional change. It wasn't. The commit message was thus wrong. In addition it broke arm, and merged crypto related code. Revert with prejudice. This revert skips files touched in r316370 since that commit was since MFCed. This revert also skips files that require $FreeBSD$ property changes. Thank you to those who helped me get out of this mess including but not limited to gonzo, kevans, rgrimes. Requested by: gjb (re) 2018-03-14T03:19:51Z Eitan Adler eadler@FreeBSD.org 2018-03-14T03:19:51Z urn:sha1:be5d0b9566b13fdf8cabebb63334cbec12bfc409 These changes are incomplete but are making it difficult to determine what other changes can/should be merged. No objections from: pfg 2016-05-01T19:39:23Z Pedro F. Giffuni pfg@FreeBSD.org 2016-05-01T19:39:23Z urn:sha1:ec489d64bb4c1bca1a6bdfdf7e37900a85f886bc No functional change. 2016-04-19T20:12:46Z Pedro F. Giffuni pfg@FreeBSD.org 2016-04-19T20:12:46Z urn:sha1:260111ffced479701f0c2f988b60c9e8997da711 2015-10-31T04:39:28Z Warner Losh imp@FreeBSD.org 2015-10-31T04:39:28Z urn:sha1:b2a4014cbb4a2a9b382ca9481c8726581aba8170 2014-04-11T16:55:25Z Alan Cox alc@FreeBSD.org 2014-04-11T16:55:25Z urn:sha1:ea8577c7121e572a853f5c889ddfb850a7753296 first calls mmap() with the arguments PROT_NONE and MAP_ANON to reserve a single, contiguous range of virtual addresses for the entire shared library. Later, rtld calls mmap() with the the shared library's file descriptor and the argument MAP_FIXED to place the text and data sections within the reserved range. The rationale for mapping shared libraries in this way is explained in the commit message for Revision 190885. However, this approach does have an unintended, negative consequence. Since the first call to mmap() specifies MAP_ANON and not the shared library's file descriptor, the kernel has no idea what alignment the vm object backing the file prefers. As a result, the reserved range's alignment is unlikely to be the same as the vm object's, and so mapping with superpages becomes impossible. To address this problem, this revision adds the argument MAP_ALIGNED_SUPER to the first call to mmap() if the text section is larger than the smallest superpage size. To determine if the text section is larger than the smallest superpage size, rtld must always fetch the page size information. As a result, the private code for fetching the base page size in rtld's builtin malloc is redundant. Eliminate it. Requested by: kib Tested by: zbb (on arm) Reviewed by: kib (an earlier version) Discussed with: jhb 2014-02-17T22:27:32Z Christian Brueffer brueffer@FreeBSD.org 2014-02-17T22:27:32Z urn:sha1:5efaea4cc6095b61e0df2a8bc7fd9912c019d805 permitted by the University of Berkeley on July 22, 1999. Reviewed by: imp MFC after: 1 week 2012-03-22T14:11:10Z Konstantin Belousov kib@FreeBSD.org 2012-03-22T14:11:10Z urn:sha1:ff6cd33319d071c728d69b9fcd8710bf45d7dd52 malloc hardly would ever be updated. Reviewed by: bde, kan MFC after: 2 weeks 2011-08-24T20:05:13Z Konstantin Belousov kib@FreeBSD.org 2011-08-24T20:05:13Z urn:sha1:0e9a2605200b721fdfcf32d2c95f79a81fc84352 C runtime services, like printf(). Unfortunately, the multithread-safeness measures in the libc do not work in rtld environment. Rip the kernel printf() implementation and use it in the rtld instead of libc version. This printf does not require any shared global data and thus is mt-safe. Systematically use rtld_printf() and related functions, remove the calls to err(3). Note that stdio is still pulled from libc due to libmap implementaion using fopen(). This is safe but unoptimal, and can be changed later. Reported and tested by: pgj Diagnosed and reviewed by: kan (previous version) Approved by: re (bz) 2010-08-17T09:05:39Z Konstantin Belousov kib@FreeBSD.org 2010-08-17T09:05:39Z urn:sha1:d59a6353d7e825b2f97f4eea68956725635c4383 Use local version of getpagesize(), rtld_getpagesize() in private allocator. Override the __getosreldate() previously fetched from libc_pic.a with local version that uses aux value if present. Note that __getosreldate() is used by rtld indirectly, by mmap(2) libc wrapper. To be able to utilize aux, split digest_dynamic() for use by init_rtld() into two parts, where the first one does not call malloc(), and the second part uses it. init_rtld() is able to initialize global variables before digest_dynamic2() calls. In particular, pagesize and osreldate are set up from the aux values. Now, rtld avoids (two) sysctl calls in startup. Tested by: marius (sparc64) MFC after: 1 month