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author | John Baldwin <jhb@FreeBSD.org> | 2015-11-27 18:58:26 +0000 |
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committer | John Baldwin <jhb@FreeBSD.org> | 2015-11-27 18:58:26 +0000 |
commit | 7f911abe54fff2adbb0dfea5a7fd8e81117d6527 (patch) | |
tree | 0b881610c55721cfde72c0eaeb1df3d9d654fd26 /Makefile.inc1 | |
parent | 6a5289b068f192ee653ce6304683d0f6588f8e0e (diff) | |
download | src-7f911abe54fff2adbb0dfea5a7fd8e81117d6527.tar.gz src-7f911abe54fff2adbb0dfea5a7fd8e81117d6527.zip |
Add support to libkvm for reading vmcores from other architectures.
- Add a kvaddr_type to represent kernel virtual addresses instead of
unsigned long.
- Add a struct kvm_nlist which is a stripped down version of struct nlist
that uses kvaddr_t for n_value.
- Add a kvm_native() routine that returns true if an open kvm descriptor
is for a native kernel and memory image.
- Add a kvm_open2() function similar to kvm_openfiles(). It drops the
unused 'swapfile' argument and adds a new function pointer argument for
a symbol resolving function. Native kernels still use _fdnlist() from
libc to resolve symbols if a resolver function is not supplied, but cross
kernels require a resolver.
- Add a kvm_nlist2() function similar to kvm_nlist() except that it uses
struct kvm_nlist instead of struct nlist.
- Add a kvm_read2() function similar to kvm_read() except that it uses
kvaddr_t instead of unsigned long for the kernel virtual address.
- Add a new kvm_arch switch of routines needed by a vmcore backend.
Each backend is responsible for implementing kvm_read2() for a given
vmcore format.
- Use libelf to read headers from ELF kernels and cores (except for
powerpc cores).
- Add internal helper routines for the common page offset hash table used
by the minidump backends.
- Port all of the existing kvm backends to implement a kvm_arch switch and
to be cross-friendly by using private constants instead of ones that
vary by platform (e.g. PAGE_SIZE). Static assertions are present when
a given backend is compiled natively to ensure the private constants
match the real ones.
- Enable all of the existing vmcore backends on all platforms. This means
that libkvm on any platform should be able to perform KVA translation
and read data from a vmcore of any platform.
Tested on: amd64, i386, sparc64 (marius)
Differential Revision: https://reviews.freebsd.org/D3341
Notes
Notes:
svn path=/head/; revision=291406
Diffstat (limited to 'Makefile.inc1')
-rw-r--r-- | Makefile.inc1 | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/Makefile.inc1 b/Makefile.inc1 index cc48d208e35d..d5ce5bca754d 100644 --- a/Makefile.inc1 +++ b/Makefile.inc1 @@ -1819,6 +1819,7 @@ _prebuild_libs+= lib/libc++ .endif lib/libgeom__L: lib/libexpat__L +lib/libkvm__L: lib/libelf__L .if ${MK_LIBTHR} != "no" _lib_libthr= lib/libthr |