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* linux-user: Make sure NWFPE code is 32 bit ARM onlyPeter Maydell2013-09-101-1/+3
| | | | | | | | | | | On ARM, linux-user emulation includes NWFPE support for emulating the ancient FPA floating point coprocessor. This has long since been superseded by VFP and is only required for legacy binaries. The AArch64 linux-user target doesn't compile in NWFPE support, so make sure the relevant code is protected by suitable ifdefs. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1378235544-22290-18-git-send-email-peter.maydell@linaro.org
* configure: Make NPTL non-optionalPeter Maydell2013-07-221-10/+0Star
| | | | | | | | | | | | | | | | | | | | Now all linux-user targets support building with NPTL, we can make it mandatory. This is a good idea because: * NPTL is no longer new and experimental; it is completely standard * in practice, linux-user without NPTL is nearly useless for binaries built against non-ancient glibc * it allows us to delete the rather untested code for handling the non-NPTL configuration Note that this patch leaves the CONFIG_USE_NPTL ifdefs in the bsd-user codebase alone. This makes no change for bsd-user, since our configure test for NPTL had a "#include <linux/futex.h>" which means bsd-user would never have been compiled with CONFIG_USE_NPTL defined, and it still is not. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
* linux-user: Enable NPTL for m68kPeter Maydell2013-07-221-0/+1
| | | | | | | | | | | For m68k, per-thread data is a purely kernel construct with no CPU level support. Implement it via a field in the TaskState structure, used by cpu_set_tls() and the set_thread_area/get_thread_area syscalls. This allows us to enable compilation with NPTL. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
* linux-user: Move includes of target-specific headers to end of qemu.hPeter Maydell2013-07-221-2/+7
| | | | | | | | | | | The target-specific headers (target_cpu.h and target_signal.h) might need to use the target-independent structure and function definitions of qemu.h; so include them only at the bottom of qemu.h, not the top. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
* linux-user: Change thread_env to CPUStateAndreas Färber2013-07-091-1/+1
| | | | Signed-off-by: Andreas Färber <afaerber@suse.de>
* linux-user: Move cpu_clone_regs() and cpu_set_tls() into linux-userPeter Maydell2013-07-091-0/+1
| | | | | | | | | | | | | The functions cpu_clone_regs() and cpu_set_tls() are not purely CPU related -- they are specific to the TLS ABI for a a particular OS. Move them into the linux-user/ tree where they belong. target-lm32 had entirely unused implementations, since it has no linux-user target; just drop them. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Acked-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Andreas Färber <afaerber@suse.de>
* linux-user: Restore cast to target type in get_user()Peter Maydell2013-02-061-2/+2
| | | | | | | | | | | | Commit 658f2dc97 accidentally dropped the cast to the target type of the value loaded by get_user(). The most visible effect of this would be that the sequence "uint64_t v; get_user_u32(v, addr)" would sign extend the 32 bit loaded value into v rather than zero extending as would be expected for a _u32 accessor. Put the cast back again to restore the old behaviour. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
* linux-user: Rewrite __get_user/__put_user with __builtin_choose_exprRichard Henderson2013-01-121-30/+33
| | | | | | | | | | | The previous formuation with multiple assignments to __typeof(*hptr) falls down when hptr is qualified const. E.g. with const struct S *p, p->f is also qualified const. With this formulation, there's no assignment to any local variable. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
* misc: move include files to include/qemu/Paolo Bonzini2012-12-191-2/+2
| | | | Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* exec: move include files to include/exec/Paolo Bonzini2012-12-191-3/+3
| | | | Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* user: Rename qemu-types.h to qemu-user-types.hEduardo Habkost2012-12-061-1/+1
| | | | | | | | The header file is specific for *-user, but I plan to introduce a more generic qemu-types.h file, so I'm renaming it. Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
* linux-user: Fix siginfo handlingRichard Henderson2012-10-121-0/+3
| | | | | | | | Compare signal numbers in the proper domain. Convert all of the fields for SIGIO and SIGCHLD. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
* linux-user: Use memcpy in get_user/put_user.Richard Henderson2012-09-211-32/+15Star
| | | | | | | | | When host and target have differing alignment rules, using a cast and direct memory operation can result in SIGBUS. Use memcpy instead, which the compiler will happily optimize when alignment is satisfied. Signed-off-by: Richard Henderson <rth@twiddle.net> Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
* linux-user: Use init_guest_space when -R and -B are specifiedMeador Inge2012-08-141-6/+0Star
| | | | | | | | | | | | | Roll the code used to initialize the guest memory space when -R or -B is used into 'init_guest_space' and then call 'init_guest_space' from the driver. This way the reserved guest memory space can be probed for. Calling 'mmap' just once as is currently done is not guaranteed to succeed since the host address space validation might fail. Signed-off-by: Meador Inge <meadori@codesourcery.com> [PMM: Fixed minor whitespace errors.] Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
* linux-user: Factor out guest space probing into a functionMeador Inge2012-08-141-0/+13
| | | | | | Signed-off-by: Meador Inge <meadori@codesourcery.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
* Userspace ARM BE8 supportPaul Brook2012-04-061-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | Add support for ARM BE8 userspace binaries. i.e. big-endian data and little-endian code. In principle LE8 mode is also possible, but AFAIK has never actually been implemented/used. System emulation doesn't have any useable big-endian board models, but should in principle work once you fix that. Dynamic endianness switching requires messing with data accesses, preferably with TCG cooperation, and is orthogonal to BE8 support. Signed-off-by: Paul Brook <paul@codesourcery.com> [PMM: various changes, mostly as per my suggestions in code review: * rebase * use EF_ defines rather than hardcoded constants * make bswap_code a bool for future VMSTATE macro compatibility * update comment in cpu.h about TB flags bit field usage * factor out load-code-and-swap into arm_ld*_code functions and get_user_code* macros * fix stray trailing space at end of line * added braces in disas.c to satisfy checkpatch ] Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
* linux-user: resolve reserved_va vma downwardsPeter Maydell2012-04-061-0/+1
| | | | | | | | | | | | | After consulting with Paul Brook, we concluded that it's best to search the VMA space downwards, so that we don't even get the chance to conflict with the brk range. This patch resolves a bunch of allocation conflicts when using -R. Signed-off-by: Alexander Graf <agraf@suse.de> [minor changes to get it to apply -- PMM] Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
* Rename CPUState -> CPUArchStateAndreas Färber2012-03-141-7/+7
| | | | | | | | | | | | | Scripted conversion: for file in *.[hc] hw/*.[hc] hw/kvm/*.[hc] linux-user/*.[hc] linux-user/m68k/*.[hc] bsd-user/*.[hc] darwin-user/*.[hc] tcg/*/*.[hc] target-*/cpu.h; do sed -i "s/CPUState/CPUArchState/g" $file done All occurrences of CPUArchState are expected to be replaced by QOM CPUState, once all targets are QOM'ified and common fields have been extracted. Signed-off-by: Andreas Färber <afaerber@suse.de> Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
* linux-user: save auxv lengthAlexander Graf2012-02-021-0/+1
| | | | | | | | | | | | | | We create our own AUXV segment on stack and save a pointer to it. However we don't save the length of it, so any code that wants to do anything useful with it later on has to walk it again. Instead, let's remember the length of our AUXV segment. This simplifies later uses by a lot. (edited by Riku to apply to qemu HEAD) Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Riku Voipio <riku.voipio@iki.fi>
* linux-user: stack_base is now mandatory on all targetsRiku Voipio2012-02-021-1/+1
| | | | Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
* linux-user: Implement new ARM 64 bit cmpxchg kernel helperDr. David Alan Gilbert2011-09-091-0/+6
| | | | | | | | | | | | | | linux-user: Implement new ARM 64 bit cmpxchg kernel helper Linux 3.1 will have a new kernel-page helper for ARM implementing 64 bit cmpxchg. Implement this helper in QEMU linux-user mode: * Provide kernel helper emulation for 64bit cmpxchg * Allow guest to object to guest offset to ensure it can map a page * Populate page with kernel helper version Signed-off-by: Riku Voipio <riku.voipio@linaro.org> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Dr. David Alan Gilbert <david.gilbert@linaro.org>
* linux-user: Bump do_syscall() up to 8 syscall argumentsPeter Maydell2011-06-211-1/+2
| | | | | | | | | | | | | On 32 bit MIPS a few syscalls have 7 arguments, and so to call them via NR_syscall the guest needs to be able to pass 8 arguments to do_syscall(). Raise the number of arguments do_syscall() takes accordingly. This fixes some gcc 4.6 compiler warnings about arg7 and arg8 variables being set and never used. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Riku Voipio <riku.voipio@iki.fi>
* Fix typos in comments (neccessary -> necessary)Stefan Weil2011-05-081-1/+1
| | | | | Signed-off-by: Stefan Weil <weil@mail.berlios.de> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
* unicore32: necessary modifications for other files to support unicore32Guan Xuetao2011-04-121-1/+4
| | | | | Signed-off-by: Guan Xuetao <gxt@mprc.pku.edu.cn> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
* linux-user/elfload: add FDPIC supportMike Frysinger2011-02-091-0/+7
| | | | | Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Riku Voipio <riku.voipio@nokia.com>
* Remove dead code for ARM semihosting commandline handlingWolfgang Schildbach2011-01-071-1/+0Star
| | | | | | | | | There are some bits in the code which were used to store the commandline for the semihosting call. These bits are now write-only and can be removed. Signed-off-by: Wolfgang Schildbach <wschi@dolby.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Riku Voipio <riku.voipio@iki.fi>
* linux-user: remove unnecessary local from __get_user(), __put_user()Peter Maydell2010-12-031-4/+2Star
| | | | | | | | | | Remove an unnecessary local variable from the __get_user() and __put_user() macros. This avoids confusing compilation failures if the name of the local variable ('size') happens to be the same as the variable the macro user is trying to read/write. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Riku Voipio <riku.voipio@nokia.com>
* linux-user: fix memory leaks with NPTL emulationNathan Froyd2010-12-031-2/+0Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Running programs that create large numbers of threads, such as this snippet from libstdc++'s pthread7-rope.cc: const int max_thread_count = 4; const int max_loop_count = 10000; ... for (int j = 0; j < max_loop_count; j++) { ... for (int i = 0; i < max_thread_count; i++) pthread_create (&tid[i], NULL, thread_main, 0); for (int i = 0; i < max_thread_count; i++) pthread_join (tid[i], NULL); } in user-mode emulation will quickly run out of memory. This is caused by a failure to free memory in do_syscall prior to thread exit: /* TODO: Free CPU state. */ pthread_exit(NULL); The first step in fixing this is to make all TaskStates used by QEMU dynamically allocated. The TaskState used by the initial thread was not, as it was allocated on main's stack. So fix that, free the cpu_env, free the TaskState, and we're home free, right? Not exactly. When we create a thread, we do: ts = qemu_mallocz(sizeof(TaskState) + NEW_STACK_SIZE); ... new_stack = ts->stack; ... ret = pthread_attr_setstack(&attr, new_stack, NEW_STACK_SIZE); If we blindly free the TaskState, then, we yank the current (host) thread's stack out from underneath it while it still has things to do, like calling pthread_exit. That causes problems, as you might expect. The solution adopted here is to let the C library allocate the thread's stack (so the C library can properly clean it up at pthread_exit) and provide a hint that we want NEW_STACK_SIZE bytes of stack. With those two changes, we're done, right? Well, almost. You see, we're creating all these host threads and their parent threads never bother to check that their children are finished. There's no good place for the parent threads to do so. Therefore, we need to create the threads in a detached state so the parent thread doesn't have to call pthread_join on the child to release the child's resources; the child does so automatically. With those three major changes, we can comfortably run programs like the above without exhausting memory. We do need to delete 'stack' from the TaskState structure. Signed-off-by: Nathan Froyd <froydnj@codesourcery.com> Signed-off-by: Riku Voipio <riku.voipio@nokia.com>
* Replace most gcc format attributes by macro GCC_FMT_ATTR (format checking)Stefan Weil2010-10-031-1/+1
| | | | | | | | | | | | | | | | | Since version 4.4.x, gcc supports additional format attributes. __attribute__ ((format (gnu_printf, 1, 2))) should be used instead of __attribute__ ((format (printf, 1, 2)) because QEMU always uses standard format strings (even with mingw32). The patch replaces format attribute printf / __printf__ by macro GCC_FMT_ATTR which uses gnu_printf if supported. It also removes an #ifdef __GNUC__ (not needed any longer). Cc: Blue Swirl <blauwirbel@gmail.com> Signed-off-by: Stefan Weil <weil@mail.berlios.de> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
* linux-user: Reduce lseek+reads while loading elf files.Richard Henderson2010-07-291-1/+6
| | | | | | | | | Define BPRM_BUF_SIZE to 1k and read that amount initially. If the data we want from the binary is in this buffer, use it instead of reading from the file again. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
* Usermode exec-stack fixPaul Brook2010-06-161-0/+1
| | | | | | | | | When loading a shared library that requires an executable stack, glibc uses the mprotext PROT_GROWSDOWN flag to achieve this. We don't support PROT_GROWSDOWN. Add a special case to handle changing the stack permissions in this way. Signed-off-by: Paul Brook <paul@codesourcery.com>
* linux-user: Remove ELFLOAD32.Richard Henderson2010-04-251-5/+0Star
| | | | | | | | | | | The ABI-specific types used by linux_binprm and image_info are different after forcing TARGET_ABI32 on. Which means that the parameters that load_elf_binary_multi sees are not those that loader_exec passed. This is inherently broken and is more trouble than it's worth fixing. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
* linux-user: Use RLIMIT_STACK for default stack size.Richard Henderson2010-03-271-1/+1
| | | | | | | | | | | | | | | | | | The current default stack limit of 512kB is far too small; a fair number of gcc testsuite failures (for all guests) are directly attributable to this. Using the -s option in every invocation of the emulator is annoying to say the least. A reasonable compromise seems to be to honor the system rlimit. At least on two Linux distributions, this is set to 8MB and 10MB respectively. If the system does not limit the stack, then we're no worse off than before. At the same time, rename the variable from x86_stack_size and change the ultimate fallback size from 512kB to 8MB. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
* linux-user: Fix mmap_find_vma returning invalid addresses.Richard Henderson2010-03-121-2/+0Star
| | | | | | | | | | | | | Don't return addresses that aren't properly aligned for the guest, e.g. when the guest has a larger page size than the host. Don't return addresses that are outside the virtual address space for the target, by paying proper attention to the h2g/g2h macros. At the same time, place the default mapping base for 64-bit guests (on 64-bit hosts) outside the low 4G. Consistently interpret mmap_next_start in the guest address space. Signed-off-by: Richard Henderson <rth@twiddle.net>
* Revert "Get rid of _t suffix"Anthony Liguori2009-10-011-4/+4
| | | | | | | | | | | | In the very least, a change like this requires discussion on the list. The naming convention is goofy and it causes a massive merge problem. Something like this _must_ be presented on the list first so people can provide input and cope with it. This reverts commit 99a0949b720a0936da2052cb9a46db04ffc6db29. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
* Get rid of _t suffixmalc2009-10-011-4/+4
| | | | | | | Some not so obvious bits, slirp and Xen were left alone for the time being. Signed-off-by: malc <av1474@comtv.ru>
* Fix sys-queue.h conflict for goodBlue Swirl2009-09-121-1/+1
| | | | | | | | | | | | | | | Problem: Our file sys-queue.h is a copy of the BSD file, but there are some additions and it's not entirely compatible. Because of that, there have been conflicts with system headers on BSD systems. Some hacks have been introduced in the commits 15cc9235840a22c289edbe064a9b3c19c5f49896, f40d753718c72693c5f520f0d9899f6e50395e94, 96555a96d724016e13190b28cffa3bc929ac60dc and 3990d09adf4463eca200ad964cc55643c33feb50 but the fixes were fragile. Solution: Avoid the conflict entirely by renaming the functions and the file. Revert the previous hacks. Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
* user: compile path.c only onceBlue Swirl2009-08-151-2/+0Star
| | | | | | Also merge bsd-user/path.c and linux-user/path.c. Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
* rename USE_NPTL to CONFIG_USE_NPTLJuan Quintela2009-07-271-4/+4
| | | | | Signed-off-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
* Userspace guest address offsettingPaul Brook2009-07-171-0/+3
| | | | | | | | | | Re-implement GUEST_BASE support. Offset guest ddress space by default if the guest binary contains regions below the host mmap_min_addr. Implement support for i386, x86-64 and arm hosts. Signed-off-by: Riku Voipio <riku.voipio@iki.fi> Signed-off-by: Paul Brook <paul@codesourcery.com>
* linux-user: increment MAX_ARG_PAGESArnaud Patard2009-07-081-1/+1
| | | | | | | | | | | | | | | | | | There's a error When doing something like that : find / -type f -print0 | xargs -0 echo [ done in a arm chroot with qemu-arm and linux binfmt stuff or with find / -type f -print0 | qemu-arm -L <path> <path>/usr/bin/xargs -0 echo ] Doing this outsite qemu is fine. The problem was the huge number of parameters. Increasing MAX_ARG_PAGES is fixing that. While I was at it, I've modified linux-user/main.c to report error code of loader_exec. It helps to debug/know what's wrong. Signed-off-by: Arnaud Patard <arnaud.patard@rtp-net.org> Signed-off-by: Riku Voipio <riku.voipio@iki.fi>
* linux-user: implemented ELF coredump support for ARM targetMika Westerberg2009-06-161-2/+11
| | | | | | | | | | | | When target process is killed with signal (such signal that should dump core) a coredump file is created. This file is similar than coredump generated by Linux (there are few exceptions though). Riku Voipio: added support for rlimit Signed-off-by: Mika Westerberg <mika.westerberg@iki.fi> Signed-off-by: Riku Voipio <riku.voipio@iki.fi>
* export mmap_find_vma for shmatRiku Voipio2009-06-161-0/+1
| | | | Signed-off-by: Riku Voipio <riku.voipio@iki.fi>
* Avoid implicit truncation compiler warningsPaul Brook2009-05-191-2/+2
| | | | Signed-off-by: Paul Brook <paul@codesourcery.com>
* Translate signal values in exit status.pbrook2009-04-161-0/+1
| | | | | | | Signed-off-by: Paul Brook <paul@codesourcery.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@7131 c046a42c-6fe2-441c-8c8c-71466251a162
* The _exit syscall is used for both thread termination in NPTL applications,pbrook2009-03-071-0/+5
| | | | | | | | | | | | | and process termination in legacy applications. Try to guess which we want based on the presence of multiple threads. Also implement locking when modifying the CPU list. Signed-off-by: Paul Brook <paul@codesourcery.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6735 c046a42c-6fe2-441c-8c8c-71466251a162
* linux-user: identify running binary in /proc/self/exeaurel322009-01-301-0/+1
| | | | | | | | | | | | Some applications like to test /proc/self/exe to find out who they are. Fake the result of readlink() for them. Use realpath() to return full path to binary (which the links /proc/self/exe are) Signed-off-by: Riku Voipio <riku.voipio@iki.fi> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6485 c046a42c-6fe2-441c-8c8c-71466251a162
* linux-user: Move abi_* typedefs into qemu-types.haurel322008-12-081-19/+1Star
| | | | | | | Signed-off-by: Kirill A. Shutemov <kirill@shutemov.name> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5954 c046a42c-6fe2-441c-8c8c-71466251a162
* Export x86_stack_size in qemu.hblueswir12008-10-051-0/+3
| | | | git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5427 c046a42c-6fe2-441c-8c8c-71466251a162
* Fix some warnings that would be generated by gcc -Wredundant-declsblueswir12008-08-301-2/+1Star
| | | | git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5115 c046a42c-6fe2-441c-8c8c-71466251a162
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