Mark Johnston e801af6fba Use PC-relative relocations for USDT probe sites on i386 and amd64. ... When recording probe site addresses in the output DOF file, dtrace -G needs to emit relocations for the .SUNW_dof section in order to obtain the addresses of functions containing probe sites. DTrace expects the addresses to be relative to the base address of the final ELF file, and the amd64 USDT implementation was relying on some unspecified and incorrect behaviour in the base system GNU ld to achieve this. This change reimplements the probe site relocation handling to allow USDT to be used with lld and newer GNU binutils. Specifically, it makes use of R_X86_64_PC64/R_386_PC32 relocations to obtain the probe site address relative to the DOF file address, and adds and uses a new DOF relocation type which computes the final probe site address using these relative offsets. Reported by and discussed with: Rafael Espíndola MFC after: 1 month Differential Revision: https://reviews.freebsd.org/D9374		2017-02-05 02:39:12 +00:00
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compat/opensolaris	libproc: Add support for some proc_attach() flags.	2016-12-06 04:22:38 +00:00
contrib/opensolaris	Use PC-relative relocations for USDT probe sites on i386 and amd64.	2017-02-05 02:39:12 +00:00
lib	Add an mbuf to ipinfo_t translator to finish cleanup of mbuf passing to TCP probes.	2017-02-01 19:33:00 +00:00
sbin	Merge ^/user/ngie/release-pkg-fix-tests to unbreak how test files are installed	2016-05-04 23:20:53 +00:00
tests	Merge ^/user/ngie/release-pkg-fix-tests to unbreak how test files are installed	2016-05-04 23:20:53 +00:00
usr.bin	Merge ^/user/ngie/release-pkg-fix-tests to unbreak how test files are installed	2016-05-04 23:20:53 +00:00
usr.sbin	Fix an unchecked return value in zfsd	2017-01-18 22:10:18 +00:00
Makefile	Add more SUBDIR_PARALLEL.	2015-10-15 22:55:08 +00:00
Makefile.inc	Make DTrace stuff compile with C99 standard.	2014-08-22 20:04:51 +00:00