src - FreeBSD source tree

	Commit message (Collapse)	Author	Age	Files	Lines
*	Correct initialization of pc on powerpc.	Mark Johnston	2017-12-12	1	-1/+2
\| \| \| \| \| \| \| \| \| \|	PR: 224293 Submitted by: Breno Leitao <breno.leitao@gmail.com> X-MFC with: r326774 Pointy hat: markj Notes: svn path=/head/; revision=326811
*	Pass the trap frame to fasttrap hooks.	Mark Johnston	2017-12-11	1	-6/+11
\| \| \| \| \| \| \| \| \| \| \| \| \|	The DTrace fasttrap entry points expect a struct reg containing the register values of the calling thread. Perform the conversion in fasttrap rather than in the trap handler: this reduces the number of ifdefs and avoids wasting stack space for traps that don't involve DTrace. MFC after: 2 weeks Notes: svn path=/head/; revision=326774
*	Move implementations of uread() and uwrite() to the illumos compat layer.	Mark Johnston	2016-09-24	1	-26/+0
\| \| \| \| \| \| \|	MFC after: 1 week Notes: svn path=/head/; revision=306304
*	Fix fasttrap tracepoint locking.	Mark Johnston	2016-03-08	1	-4/+9
\| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \|	Upstream, tracepoints are protected by per-CPU mutexes. An unlinked tracepoint may be freed once all the tracepoint mutexes have been acquired and released - this is done in fasttrap_mod_barrier(). This mechanism was not properly ported: in some places, the proc lock is used in place of a tracepoint lock, and in others the locking is omitted entirely. This change implements tracepoint locking with an rmlock, where the read lock is used in fasttrap probe context. As a side effect, this fixes a recursion on the proc lock when the raise action is used from a userland probe. MFC after: 1 month Notes: svn path=/head/; revision=296479
*	Add helper functions proc_readmem() and proc_writemem().	Mark Johnston	2015-12-07	1	-27/+13
\| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \|	These helper functions can be used to read in or write a buffer from or to an arbitrary process' address space. Without them, this can only be done using proc_rwmem(), which requires the caller to fill out a uio. This is onerous and results in code duplication; the new functions provide a simpler interface which is sufficient for most existing callers of proc_rwmem(). This change also adds a manual page for proc_rwmem() and the new functions. Reviewed by: jhb, kib Differential Revision: https://reviews.freebsd.org/D4245 Notes: svn path=/head/; revision=291961
*	Fix a couple bugs in 64-bit powerpc fasttrap argument retrieval.	Justin Hibbits	2015-05-10	1	-3/+3
\| \| \| \| \| \| \|	Found by code inspection. Notes: svn path=/head/; revision=282703
*	Correct the check for errors from proc_rwmem().	Mark Johnston	2013-12-11	1	-1/+1
\| \| \| \| \| \| \|	MFC after: 2 weeks Notes: svn path=/head/; revision=259211
*	Add fasttrap for PowerPC. This is the last piece of the dtrace/ppc puzzle.	Justin Hibbits	2013-10-15	2	-9/+583
\| \| \| \| \| \| \| \| \| \|	It's incomplete, it doesn't contain full instruction emulation, but it should be sufficient for most cases. MFC after: 1 month Notes: svn path=/head/; revision=256543
*	Implement DTrace for PowerPC. This includes both 32-bit and 64-bit.	Justin Hibbits	2012-11-07	2	-0/+79
	There is one known issue: Some probes will display an error message along the lines of: "Invalid address (0)" I tested this with both a simple dtrace probe and dtruss on a few different binaries on 32-bit. I only compiled 64-bit, did not run it, but I don't expect problems without the modules loaded. Volunteers are welcome. MFC after: 1 month Notes: svn path=/head/; revision=242723