- 17 10月, 2007 1 次提交
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由 Alexey Dobriyan 提交于
Identical handlers of PTRACE_DETACH go into ptrace_request(). Not touching compat code. Not touching archs that don't call ptrace_request. Signed-off-by: NAlexey Dobriyan <adobriyan@sw.ru> Acked-by: NChristoph Hellwig <hch@infradead.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 03 10月, 2007 1 次提交
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由 Roland McGrath 提交于
This restores the CHECK_FULL_REGS sanity check to every place that can access the nonvolatile GPRs for ptrace. This is already done for native-bitwidth PTRACE_PEEKUSR, but was omitted for many other cases (32-bit ptrace, PTRACE_GETREGS, etc.); I think there may have been more uniform checks before that were lost in the recent cleanup of GETREGS et al. Signed-off-by: NRoland McGrath <roland@redhat.com> Signed-off-by: NPaul Mackerras <paulus@samba.org>
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- 14 9月, 2007 1 次提交
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由 Kumar Gala 提交于
Make it so that SPE support can be determined at runtime. This is similiar to how we handle AltiVec. This allows us to have SPE support built in and work on processors with and without SPE. Signed-off-by: NKumar Gala <galak@kernel.crashing.org>
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- 18 7月, 2007 2 次提交
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由 Alexey Dobriyan 提交于
Identical implementations of PTRACE_POKEDATA go into generic_ptrace_pokedata() function. AFAICS, fix bug on xtensa where successful PTRACE_POKEDATA will nevertheless return EPERM. Signed-off-by: NAlexey Dobriyan <adobriyan@gmail.com> Cc: Christoph Hellwig <hch@lst.de> Cc: <linux-arch@vger.kernel.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Alexey Dobriyan 提交于
Identical implementations of PTRACE_PEEKDATA go into generic_ptrace_peekdata() function. Signed-off-by: NAlexey Dobriyan <adobriyan@gmail.com> Cc: Christoph Hellwig <hch@lst.de> Cc: <linux-arch@vger.kernel.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 14 6月, 2007 8 次提交
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由 Benjamin Herrenschmidt 提交于
Allow ptrace to set dabr in the thread structure for both 32 and 64 bits, though only 64 bits actually uses that field, it's actually defined in both. Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: NPaul Mackerras <paulus@samba.org>
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由 Benjamin Herrenschmidt 提交于
One of the gratuitous difference between 32 and 64-bit ptrace is whether you can whack the MSR:FE0 and FE1 bits from ptrace. This patch forbids it unconditionally. In addition, the 64-bit kernels used to return the exception mode in the MSR on reads, but 32-bit kernels didn't. This patch makes it return those bits on both. Finally, since ptrace-ppc32.h and ptrace-ppc64.h are mostly empty now, and since the previous patch made ptrace32.c no longer need the MSR_DEBUGCHANGE definition, we just remove those 2 files and move back the remaining bits to ptrace.c (they were short lived heh ?). Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: NPaul Mackerras <paulus@samba.org>
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由 Benjamin Herrenschmidt 提交于
This patch allows a ptracer to write to the "trap" and "orig_r3" words of the pt_regs. This, along with a subsequent patch to the signal restart code, should enable gdb to properly handle syscall restarting after executing a separate function (at least when there's no restart block). This patch also removes ptrace32.c code toying directly with the registers and makes it use the ptrace_get/put_reg() accessors for everything so that the logic for checking what is permitted is in only one place. Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: NPaul Mackerras <paulus@samba.org>
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由 Benjamin Herrenschmidt 提交于
CHECK_FULL_REGS() exist on both 32 and 64 bits, so there's no need to make it conditional on CONFIG_PPC32. Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: NPaul Mackerras <paulus@samba.org>
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由 Benjamin Herrenschmidt 提交于
This folds back the ptrace-common.h bits back into ptrace.c and removes that file. The FSL SPE bits from ptrace-ppc32.h are folded back in as well. Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: NPaul Mackerras <paulus@samba.org>
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由 Benjamin Herrenschmidt 提交于
The powerpc ptrace interface is dodgy at best. We have defined our "own" versions of GETREGS/SETREGS/GETFPREGS/SETFPREGS that strangely take arguments in reverse order from other archs (in addition to having different request numbers) and have subtle issue, like not accessing all of the registers in their respective categories. This patch moves the implementation of those to a separate function in order to facilitate their deprecation in the future, and provides new ptrace requests that mirror the x86 and sparc ones and use the same numbers: PTRACE_GETREGS : returns an entire pt_regs (the whole thing, not only the 32 GPRs, though that doesn't include the FPRs etc... There's a compat version for 32 bits that returns a 32 bits compatible pt_regs (44 uints) PTRACE_SETREGS : sets an entire pt_regs (the whole thing, not only the 32 GPRs, though that doesn't include the FPRs etc... Some registers cannot be written to and will just be dropped, this is the same as with POKEUSR, that is anything above MQ on 32 bits and CCR on 64 bits. There is a compat version as well. PTRACE_GETFPREGS : returns all the FP registers -including- the FPSCR that is 33 doubles (regardless of 32/64 bits) PTRACE_SETFPREGS : sets all the FP registers -including- the FPSCR that is 33 doubles (regardless of 32/64 bits) And two that only exist on 64 bits kernels: PTRACE_GETREGS64 : Same as PTRACE_GETREGS, except there is no compat function, a 32 bits process will obtain the full 64 bits registers PTRACE_SETREGS64 : Same as PTRACE_SETREGS, except there is no compat function, a 32 bits process will set the full 64 bits registers The two later ones makes things easier to have a 32 bits debugger on a 64 bits program (or on a 32 bits program that uses the full 64 bits of the GPRs, which is possible though has issues that will be fixed in a later patch). Finally, while at it, the patch removes a whole bunch of code duplication between ptrace32.c and ptrace.c, in large part by having the former call into the later for all requests that don't need any special "compat" treatment. Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: NPaul Mackerras <paulus@samba.org>
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由 Benjamin Herrenschmidt 提交于
The powerpc ptrace code has some weirdness, like a ptrace-common.h file that is actually ppc64 only and some of the 32 bits code ifdef'ed inside ptrace.c. There are also separate implementations for things like get/set_vrregs for 32 and 64 bits which is totally unnecessary. This patch cleans that up a bit by having a ptrace-common.h which contains really common code (and makes a lot more code common), and ptrace-ppc32.h and ptrace-ppc64.h files that contain the few remaining different bits. Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: NPaul Mackerras <paulus@samba.org>
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由 Benjamin Herrenschmidt 提交于
The handling of PPC_PTRACE_GETFPREGS is broken on 32 bits kernel, it will only return half of the registers. Since that call didn't initially exist for 32 bits kernel (added recently), rather than fixing it, let's just remove it. Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: NPaul Mackerras <paulus@samba.org>
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- 02 6月, 2007 1 次提交
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由 Benjamin Herrenschmidt 提交于
The ppc32 kernel didn't properly set/clear the TIF_SINGLESTEP flag, causing return from syscalls to not SIGTRAP, thus executing one more instruction before stopping again. This fixes it. The ptrace code is a bit of a mess, and is overdue for at least a -proper- 32/64 bits split and possibly more cleanups but this minimum fix should be ok for 2.6.22 Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: NPaul Mackerras <paulus@samba.org>
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- 09 5月, 2007 1 次提交
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由 Randy Dunlap 提交于
Remove includes of <linux/smp_lock.h> where it is not used/needed. Suggested by Al Viro. Builds cleanly on x86_64, i386, alpha, ia64, powerpc, sparc, sparc64, and arm (all 59 defconfigs). Signed-off-by: NRandy Dunlap <randy.dunlap@oracle.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 24 1月, 2007 1 次提交
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由 David Woodhouse 提交于
The system call entry code will clear the high bits of argument registers before invoking the system call; don't report whatever noise happens to be in the high bits of the register before that happens. Signed-off-by: NDavid Woodhouse <dwmw2@infradead.org> Signed-off-by: NPaul Mackerras <paulus@samba.org>
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- 26 9月, 2006 2 次提交
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由 David Woodhouse 提交于
The secure_computing() call which automatically aborts a process if it tries to execute a syscall it shouldn't is much more useful if we actually do it _before_ the syscall, rather than afterwards. PPC64 got this right, but the original incorrect behaviour inherited from arch/ppc was preserved by ifdefs. Make it the same on PPC32 too. Also, I see no need to export do_syscall_trace_{leave,enter} on ppc32 -- they were only exported because the old do_syscall_trace() (which they replaced) used to be. Signed-off-by: NDavid Woodhouse <dwmw2@infradead.org> Signed-off-by: NPaul Mackerras <paulus@samba.org>
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由 David Woodhouse 提交于
Due to my stupidity, we were checking for the wrong bit in CCR when attempting to determine whether a syscall succeeded or not. Remedy the symptom, if not the cause. Signed-off-by: NDavid Woodhouse <dwmw2@infradead.org> Signed-off-by: NPaul Mackerras <paulus@samba.org>
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- 01 7月, 2006 1 次提交
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由 Jörn Engel 提交于
Signed-off-by: NJörn Engel <joern@wohnheim.fh-wedel.de> Signed-off-by: NAdrian Bunk <bunk@stusta.de>
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- 09 6月, 2006 1 次提交
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由 Renzo Davoli 提交于
I have tested PPC_PTRACE_GETREGS and PPC_PTRACE_SETREGS on umview. I do not understand why historically these tags has been defined as PPC_PTRACE_GETREGS and PPC_PTRACE_SETREGS instead of simply PTRACE_[GS]ETREGS. The other "originality" is that the address must be put into the "addr" field instead of the "data" field as stated in the manual. Signed-off-by: Nrenzo davoli <renzo@cs.unibo.it> Signed-off-by: NPaul Mackerras <paulus@samba.org>
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- 01 5月, 2006 1 次提交
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由 Al Viro 提交于
... it's always current, and that's a good thing - allows simpler locking. Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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- 08 3月, 2006 1 次提交
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由 Paul Mackerras 提交于
A careful reading of the recent changes to the system call entry/exit paths revealed several problems, plus some things that could be simplified and improved: * 32-bit wasn't testing the _TIF_NOERROR bit in the syscall fast exit path, so it was only doing anything with it once it saw some other bit being set. In other words, the noerror behaviour would apply to the next system call where we had to reschedule or deliver a signal, which is not necessarily the current system call. * 32-bit wasn't doing the call to ptrace_notify in the syscall exit path when the _TIF_SINGLESTEP bit was set. * _TIF_RESTOREALL was in both _TIF_USER_WORK_MASK and _TIF_PERSYSCALL_MASK, which is odd since _TIF_RESTOREALL is only set by system calls. I took it out of _TIF_USER_WORK_MASK. * On 64-bit, _TIF_RESTOREALL wasn't causing the non-volatile registers to be restored (unless perhaps a signal was delivered or the syscall was traced or single-stepped). Thus the non-volatile registers weren't restored on exit from a signal handler. We probably got away with it mostly because signal handlers written in C wouldn't alter the non-volatile registers. * On 32-bit I simplified the code and made it more like 64-bit by making the syscall exit path jump to ret_from_except to handle preemption and signal delivery. * 32-bit was calling do_signal unnecessarily when _TIF_RESTOREALL was set - but I think because of that 32-bit was actually restoring the non-volatile registers on exit from a signal handler. * I changed the order of enabling interrupts and saving the non-volatile registers before calling do_syscall_trace_leave; now we enable interrupts first. Signed-off-by: NPaul Mackerras <paulus@samba.org>
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- 19 11月, 2005 1 次提交
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由 Paul Mackerras 提交于
It's only used by arch/powerpc/kernel/ptrace{,32}.c. Signed-off-by: NPaul Mackerras <paulus@samba.org>
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- 07 11月, 2005 1 次提交
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由 Christoph Hellwig 提交于
The sys_ptrace boilerplate code (everything outside the big switch statement for the arch-specific requests) is shared by most architectures. This patch moves it to kernel/ptrace.c and leaves the arch-specific code as arch_ptrace. Some architectures have a too different ptrace so we have to exclude them. They continue to keep their implementations. For sh64 I had to add a sh64_ptrace wrapper because it does some initialization on the first call. For um I removed an ifdefed SUBARCH_PTRACE_SPECIAL block, but SUBARCH_PTRACE_SPECIAL isn't defined anywhere in the tree. Signed-off-by: NChristoph Hellwig <hch@lst.de> Acked-by: NPaul Mackerras <paulus@samba.org> Acked-by: NRalf Baechle <ralf@linux-mips.org> Acked-By: NDavid Howells <dhowells@redhat.com> Acked-by: NRussell King <rmk+kernel@arm.linux.org.uk> Acked-by: NPaul Mundt <lethal@linux-sh.org> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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- 31 10月, 2005 1 次提交
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由 Paul Mackerras 提交于
Signed-off-by: NPaul Mackerras <paulus@samba.org>
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- 20 10月, 2005 1 次提交
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由 Paul Mackerras 提交于
Also corrected my email address in ptrace.c and updated the comments at the top of ptrace32.c. Signed-off-by: NPaul Mackerras <paulus@samba.org>
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- 13 10月, 2005 1 次提交
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由 Stephen Rothwell 提交于
Signed-off-by: NStephen Rothwell <sfr@canb.auug.org.au>
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- 08 5月, 2005 1 次提交
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由 David Woodhouse 提交于
Signed-off-by: NDavid Woodhouse <dwmw2@infradead.org>
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- 01 5月, 2005 1 次提交
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由 Jesper Juhl 提交于
Convert most of the current code that uses _NSIG directly to instead use valid_signal(). This avoids gcc -W warnings and off-by-one errors. Signed-off-by: NJesper Juhl <juhl-lkml@dif.dk> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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- 17 4月, 2005 1 次提交
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由 Linus Torvalds 提交于
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
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