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303975 |
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11-Aug-2016 |
gjb |
Copy stable/11@r303970 to releng/11.0 as part of the 11.0-RELEASE cycle.
Prune svn:mergeinfo from the new branch, and rename it to RC1.
Update __FreeBSD_version.
Use the quarterly branch for the default FreeBSD.conf pkg(8) repo and the dvd1.iso packages population.
Approved by: re (implicit) Sponsored by: The FreeBSD Foundation |
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302408 |
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08-Jul-2016 |
gjb |
Copy head@r302406 to stable/11 as part of the 11.0-RELEASE cycle. Prune svn:mergeinfo from the new branch, as nothing has been merged here.
Additional commits post-branch will follow.
Approved by: re (implicit) Sponsored by: The FreeBSD Foundation
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295056 |
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30-Jan-2016 |
jhb |
Add a SYSDECODE_ABI_ prefix to the ABI enums to avoid potential collisions.
Suggested by: jmallett Reviewed by: bdrewery, jmallett Differential Revision: https://reviews.freebsd.org/D5123
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294849 |
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26-Jan-2016 |
jhb |
Add support to libsysdecode for decoding system call names.
A new sysdecode_syscallname() function accepts a system call code and returns a string of the corresponding name (or NULL if the code is unknown). To support different process ABIs, the new function accepts a value from a new sysdecode_abi enum as its first argument to select the ABI in use. Current ABIs supported include FREEBSD (native binaries), FREEBSD32, LINUX, LINUX32, and CLOUDABI64. Note that not all ABIs are supported by all platforms. In general, a given ABI is only supported if a platform can execute binaries for that ABI.
To simplify the implementation, libsysdecode's build reuses the existing pre-generated files from the kernel source tree rather than duplicating new copies of said files during the build.
kdump(1) and truss(1) now use these functions to map system call identifiers to names. For kdump(1), a new 'syscallname()' function consolidates duplicated code from ktrsyscall() and ktrsyscallret(). The Linux ABI no longer requires custom handling for ktrsyscall() and linux_ktrsyscall() has been removed as a result.
Reviewed by: bdrewery Differential Revision: https://reviews.freebsd.org/D4823
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289239 |
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13-Oct-2015 |
bdrewery |
Simplify syscall generation and ABI source file handling for the build.
This is to make the Makefile more easily extendable for new ABIs.
This also makes several other subtle changes: - The build now is given a list of ABIs to use based on the MACHINE_ARCH or MACHINE_CPUARCH. These ABIs have a related path in sys/ that is used to generate their syscalls. For each ABI to build check for a ABI.c, MACHINE_ARCH-ABI.c, or a MACHINE_CPUARCH-ABI.c. This matches the old behavior needed for archs such as powerpc* and mips*. - The ABI source file selection allows for simpler assignment of common ABIs such as "fbsd32" from sys/compat/freebsd32, or cloudabi64. - Expand 'fbsd' to 'freebsd' everywhere for consistency. - Split out the powerpc-fbsd.c file into a powerpc64-freebsd32.c to be more like the amd64-freebsd32.c file and to more easily allow the auto-generation of ABI handling to work. - Rename 'syscalls.h' to 'fbsd_syscalls.h' to lessen the ambiguity and avoid confusion with syscall.h (such as in r288997). - For non-native syscall header files, they are now renamed to be ABI_syscalls.h, where ABI is what ABI the Makefile is building. - Remove all of the makesyscalls config files. The "native" one being name i386.conf was a long outstanding bug. They were all the same except for the data they generated, so now it is just auto-generated as a build artifact. - The syscalls array is now fixed to be static in the syscalls header to remove the compiler warning about non-extern. This was worked around in the aarch64-fbsd.c file but not the others. - All syscall table names are now just 'syscallnames' since they don't need to be different as they are all static in their own ABI files. The alternative is to name them ABI_syscallnames which does not seem necessary.
Reviewed by: ed, jhb MFC after: 3 weeks Differential Revision: https://reviews.freebsd.org/D3851
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288424 |
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30-Sep-2015 |
jhb |
Several changes to truss. - Refactor the interface between the ABI-independent code and the ABI-specific backends. The backends now provide smaller hooks to fetch system call arguments and return values. The rest of the system call entry and exit handling that was previously duplicated among all the backends has been moved to one place. - Merge the loop when waiting for an event with the loop for handling stops. This also means not emulating a procfs-like interface on top of ptrace(). Instead, use a single event loop that fetches process events via waitid(). Among other things this allows us to report the full 32-bit exit value. - Use PT_FOLLOW_FORK to follow new child processes instead of forking a new truss process for each new child. This allows one truss process to monitor a tree of processes and truss -c should now display one total for the entire tree instead of separate summaries per process. - Use the recently added fields to ptrace_lwpinfo to determine the current system call number and argument count. The latter is especially useful and fixes a regression since the conversion from procfs. truss now generally prints the correct number of arguments for most system calls rather than printing extra arguments for any call not listed in the table in syscalls.c. - Actually check the new ABI when processes call exec. The comments claimed that this happened but it was not being done (perhaps this was another regression in the conversion to ptrace()). If the new ABI after exec is not supported, truss detaches from the process. If truss does not support the ABI for a newly executed process the process is killed before it returns from exec. - Along with the refactor, teach the various ABI-specific backends to fetch both return values, not just the first. Use this to properly report the full 64-bit return value from lseek(). In addition, the handler for "pipe" now pulls the pair of descriptors out of the return values (which is the true kernel system call interface) but displays them as an argument (which matches the interface exported by libc). - Each ABI handler adds entries to a linker set rather than requiring a statically defined table of handlers in main.c. - The arm and mips system call fetching code was changed to follow the same pattern as amd64 (and the in-kernel handler) of fetching register arguments first and then reading any remaining arguments from the stack. This should fix indirect system call arguments on at least arm. - The mipsn32 and n64 ABIs will now look for arguments in A4 through A7. - Use register %ebp for the 6th system call argument for Linux/i386 ABIs to match the in-kernel argument fetch code. - For powerpc binaries on a powerpc64 system, fetch the extra arguments on the stack as 32-bit values that are then copied into the 64-bit argument array instead of reading the 32-bit values directly into the 64-bit array.
Reviewed by: kib (earlier version) Tested on: amd64 (FreeBSD/amd64 & i386), i386, arm (earlier version) Tested on: powerpc64 (FreeBSD/powerpc64 & powerpc) MFC after: 1 month Differential Revision: https://reviews.freebsd.org/D3575
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288406 |
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30-Sep-2015 |
jhb |
Trim trailing whitespace.
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286963 |
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20-Aug-2015 |
jhb |
Handle the conditional decoding of execve() argument and environment arrays generically rather than duplicating a hack in all of the backends. - Add two new system call argument types and use them instead of StringArray for the argument and environment arguments execve and linux_execve. - Honor the -a/-e flags in the handling of these new types. - Instead of printing "<missing argument>" when the decoding is disabled, print the raw pointer value.
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286938 |
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19-Aug-2015 |
jhb |
Various style and whitespace fixes.
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286937 |
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19-Aug-2015 |
jhb |
Use nitems().
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285842 |
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24-Jul-2015 |
emaste |
truss: follow pdfork()ed descendents with -f
PR: 201276 Reported by: David Drysdale Reviewed by: oshogbo MFC after: 1 week Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D2976
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271398 |
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10-Sep-2014 |
andrew |
Unify interrupts bit definition and usage. While here remove PSR_C_bit.
Submitted by: Svatopluk Kraus <onwahe at gmail.com>, Michal Meloun <meloun at miracle.cz> Differential Revision: https://reviews.freebsd.org/D754
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271389 |
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10-Sep-2014 |
andrew |
Stop accessing the saved stack pointer by looking past the end of the array of registers.
Submitted by: Michal Meloun <meloun at miracle.cz>
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247975 |
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07-Mar-2013 |
cognet |
Add arm bits to truss.
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