Date: Sat, 1 Dec 2007 19:24:28 +0000 (UTC) From: Robert Watson <rwatson@FreeBSD.org> To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/sys linker.h src/sys/kern kern_linker.c Message-ID: <200712011924.lB1JOS19045533@repoman.freebsd.org>
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rwatson 2007-12-01 19:24:28 UTC
FreeBSD src repository
Modified files:
sys/sys linker.h
sys/kern kern_linker.c
Log:
The kernel linker includes a number of utility functions to look up symbol
information in support of DDB(4); these functions bypass normal linker
locking as they may run in contexts where locking is unsafe (such as the
kernel debugger).
Add a new interface linker_ddb_search_symbol_name(), which looks up a
symbol name and offset given an address, and also
linker_search_symbol_name() which does the same but *does* follow the
locking conventions of the linker.
Unlike existing functions, these functions place the name in a
caller-provided buffer, which is stable even after linker locks have been
released. These functions will be used in upcoming revisions to stack(9)
to support kernel stack trace generation in contexts as part of a live,
rather than suspended, kernel.
Revision Changes Path
1.153 +87 -13 src/sys/kern/kern_linker.c
1.50 +8 -0 src/sys/sys/linker.h
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