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path: root/linux-user/syscall.c
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2011-08-20Use glib memory allocation and free functionsAnthony Liguori
qemu_malloc/qemu_free no longer exist after this commit. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-07-25Wrap recv to avoid warningsBlue Swirl
Avoid warnings like these by wrapping recv(): CC slirp/ip_icmp.o /src/qemu/slirp/ip_icmp.c: In function 'icmp_receive': /src/qemu/slirp/ip_icmp.c:418:5: error: passing argument 2 of 'recv' from incompatible pointer type [-Werror] /usr/local/lib/gcc/i686-mingw32msvc/4.6.0/../../../../i686-mingw32msvc/include/winsock2.h:547:32: note: expected 'char *' but argument is of type 'struct icmp *' Remove also casts used to avoid warnings. Reviewed-by: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-07-13linux-user: make MIPS and ARM eabi use same argument reorderingRiku Voipio
MIPS uses similar calling convention than ARM eabi, where when using 64-bit values some registers are skipped. This patch makes MIPS and ARM eabi share the argument reordering code. This affects ftruncate64, creating insane sized fails (or just failing). Cc: Wesley W. Terpstra <terpstra@debian.org> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2011-07-12mips: rlimit codes are not the sameWesley W. Terpstra
The codes for get/setrlimit differ between linux target platforms. This patch adds conversion. This is important else programs (rsyslog, python, ...) can go into a near infinite loop trying to close all the file descriptors from 0 to -1. Signed-off-by: Wesley W. Terpstra <terpstra@debian.org> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2011-07-12mips: rlimit incorrectly converts valuesWesley W. Terpstra
Byte swap was applied in the wrong order with testing for RLIM_INFINITY. On mips bigendian from an amd64 system this results in infinity being misinterpretted as 2^31-1. This is a serious bug because it causes setrlimit stack size to kill all child processes. This means (for example) that 'make' can run no children. The mechanism of failure: 1. parent sets stack size rlimit to 'infinity' 2. qemu screws this value up 3. child process fetches stack size as a large (but non-infinite) value 4. qemu tries to allocate stack before execution 5. stack allocation fails (too big) and child process dies Signed-off-by: Wesley W. Terpstra <terpstra@debian.org> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2011-07-11linux-user/syscall.c: Enforce pselect6 sigset size restrictionsPeter Maydell
Enforce the same restriction on the size of the sigset passed to pselect6 as the Linux kernel does. This is both correct and silences a gcc 4.6 warning about a write-only variable. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2011-07-11linux-user: Implement prlimit64 syscallPeter Maydell
Implement the prlimit64 syscall. Slightly modified to apply upstream -Riku Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2011-06-21linux-user: Fix sync_file_range on 32bit mipsRiku Voipio
As noticed while looking at "Bump do_syscall() up to 8 syscall arguments" patch, sync_file_range uses a pad argument on 32bit mips. Deal with it by reading the correct arguments when on mips. Signed-off-by: Riku Voipio <riku.voipio@iki.fi>
2011-06-21linux-user: Bump do_syscall() up to 8 syscall argumentsPeter Maydell
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>
2011-06-21linux-user: syscall should use sanitized arg1Juan Quintela
Looking at the other architectures, we should be using "how" not "arg1". Signed-off-by: Juan Quintela <quintela@redhat.com> [peter.maydell@linaro.org: remove unnecessary initialisation of how] Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Riku Voipio <riku.voipio@iki.fi>
2011-06-21syscall: really return ret codeJuan Quintela
We assign ret with the error code, but then return 0 unconditionally. Signed-off-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Riku Voipio <riku.voipio@iki.fi>
2011-06-21linux-user: add pselect6 syscall supportMike Frysinger
Some architectures (like Blackfin) only implement pselect6 (and skip select/newselect). So add support for it. Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Riku Voipio <riku.voipio@iki.fi>
2011-06-21linux-user: Fix the computation of the requested heap sizevincent
There were several remaining bugs in the previous implementation of do_brk(): 1. the value of "new_alloc_size" was one page too large when the requested brk was aligned on a host page boundary. 2. no new pages should be (re-)allocated when the requested brk is in the range of the pages that were already allocated previsouly (for the same purpose). Technically these pages are never unmapped in the current implementation. The problem/fix can be reproduced/validated with the test-suite above: #include <unistd.h> /* syscall(2), */ #include <sys/syscall.h> /* SYS_brk, */ #include <stdio.h> /* puts(3), */ #include <stdlib.h> /* exit(3), EXIT_*, */ #include <stdint.h> /* uint*_t, */ #include <sys/mman.h> /* mmap(2), MAP_*, */ #include <string.h> /* memset(3), */ int main() { int exit_status = EXIT_SUCCESS; uint8_t *current_brk = 0; uint8_t *initial_brk; uint8_t *new_brk; uint8_t *old_brk; int failure = 0; int i; void test_brk(int increment, int expected_result) { new_brk = (uint8_t *)syscall(SYS_brk, current_brk + increment); if ((new_brk == current_brk) == expected_result) failure = 1; current_brk = (uint8_t *)syscall(SYS_brk, 0); } void test_result() { if (!failure) puts("OK"); else { puts("failure"); exit_status = EXIT_FAILURE; } } void test_title(const char *title) { failure = 0; printf("%-45s : ", title); fflush(stdout); } test_title("Initialization"); test_brk(0, 1); initial_brk = current_brk; test_result(); test_title("Don't overlap \"brk\" pages"); test_brk(HOST_PAGE_SIZE, 1); test_brk(HOST_PAGE_SIZE, 1); test_result(); /* Preparation for the test "Re-allocated heap is initialized". */ old_brk = current_brk - HOST_PAGE_SIZE; memset(old_brk, 0xFF, HOST_PAGE_SIZE); test_title("Don't allocate the same \"brk\" page twice"); test_brk(-HOST_PAGE_SIZE, 1); test_brk(HOST_PAGE_SIZE, 1); test_result(); test_title("Re-allocated \"brk\" pages are initialized"); for (i = 0; i < HOST_PAGE_SIZE; i++) { if (old_brk[i] != 0) { printf("(index = %d, value = 0x%x) ", i, old_brk[i]); failure = 1; break; } } test_result(); test_title("Don't allocate \"brk\" pages over \"mmap\" pages"); new_brk = mmap(current_brk, HOST_PAGE_SIZE / 2, PROT_READ, MAP_PRIVATE | MAP_ANONYMOUS | MAP_FIXED, -1, 0); if (new_brk == (void *) -1) puts("unknown"); else { test_brk(HOST_PAGE_SIZE, 0); test_result(); } test_title("All \"brk\" pages are writable (please wait)"); if (munmap(current_brk, HOST_PAGE_SIZE / 2) != 0) puts("unknown"); else { while (current_brk - initial_brk < 2*1024*1024*1024UL) { old_brk = current_brk; test_brk(HOST_PAGE_SIZE, -1); if (old_brk == current_brk) break; for (i = 0; i < HOST_PAGE_SIZE; i++) old_brk[i] = 0xAA; } puts("OK"); } test_title("Maximum size of the heap > 16MB"); failure = (current_brk - initial_brk) < 16*1024*1024; test_result(); exit(exit_status); } Changes introduced in patch v2: * extend the "brk" test-suite embedded within the commit message; * heap contents have to be initialized to zero, this bug was exposed by "tst-calloc.c" from the GNU C library; * don't [try to] allocate a new host page if the new "brk" is equal to the latest allocated host page ("brk_page"); and * print some debug information when DEBUGF_BRK is defined. Signed-off-by: Cédric VINCENT <cedric.vincent@st.com> Reviewed-by: Christophe Guillon <christophe.guillon@st.com> Cc: Riku Voipio <riku.voipio@iki.fi> Signed-off-by: Riku Voipio <riku.voipio@iki.fi>
2011-06-21linux-user: Don't use MAP_FIXED in do_brk()Peter Maydell
Since mmap() with MAP_FIXED will map over the top of existing mappings, it's a bad idea to use it to implement brk(), because brk() with a large size is likely to overwrite important things like qemu itself or the host libc. So we drop MAP_FIXED and handle "mapped but at different address" as an error case instead. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Riku Voipio <riku.voipio@iki.fi>
2011-05-20s390x: s390x-linux-user supportUlrich Hecht
This patch adds support for running s390x binaries in the linux-user emulation code. Signed-off-by: Ulrich Hecht <uli@suse.de> Signed-off-by: Alexander Graf <agraf@suse.de>
2011-05-08linux-user: Replace deprecated functionStefan Weil
Function bzero is deprecated, so replace it by function memset. Signed-off-by: Stefan Weil <weil@mail.berlios.de> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2011-05-02Don't zero out buffer in sched_getaffinityMike McCormack
The kernel doesn't fill the buffer provided to sched_getaffinity with zero bytes, so neither should QEMU. Signed-off-by: Mike McCormack <mj.mccormack@samsung.com> Reviewed-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Riku Voipio <riku.voipio@iki.fi>
2011-05-02Fix buffer overrun in sched_getaffinityMike McCormack
Zeroing of the cpu array should start from &cpus[kernel_ret] not &cpus[num_zeros_to_fill]. This fixes a crash in EFL's edje_cc running under qemu-arm. Signed-off-by: Mike McCormack <mj.mccormack@samsung.com> Reviewed-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Acked-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Riku Voipio <riku.voipio@iki.fi>
2011-04-26linux-user: untie syscalls from UID16Riku Voipio
Quite a number of uid/gid related syscalls are only defined on systems with USE_UID16 defined. This is apperently based on the idea that these system calls would never be called on non-UID16 systems. Make these syscalls available for all architectures that define them. drop alpha hack to support selected UID16 syscalls. MIPS and PowerPC were also defined as UID16, to get uid/gid syscalls available, drop this error as well. Change QEMU to reflect this. Cc: Ulrich Hecht <uli@suse.de> Cc: Richard Henderson <rth@twiddle.net> Cc: Alexander Graf <agraf@suse.de> Signed-off-by: Riku Voipio <riku.voipio@iki.fi>
2011-04-26linux-user: add s390x to llseek listAlexander Graf
We keep a list of host architectures that do llseek with the same syscall as lseek. S390x is one of them, so let's add it to the list. Original-patch-by: Ulrich Hecht <uli@suse.de> Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Riku Voipio <riku.voipio@iki.fi>
2011-04-26linux-user: add ioctl(SIOCGIWNAME, ...) support.Laurent Vivier
Allow to run properly following program from linux-user: /* cc -o wifi wifi.c */ #include <stdio.h> #include <sys/ioctl.h> #include <sys/types.h> #include <sys/socket.h> #include <linux/wireless.h> #include <netinet/in.h> #include <arpa/inet.h> #include <string.h> int main(int argc, char **argv) { int ret; struct ifreq req; struct sockaddr_in *addr; int s; if (argc != 2) { fprintf(stderr, "Need an interface name (like wlan0)\n"); return 1; } s = socket( AF_INET, SOCK_DGRAM, 0 ); if (s < 0) { perror("Cannot open socket"); return 1; } strncpy(req.ifr_name, argv[1], sizeof(req.ifr_name)); ret = ioctl( s, SIOCGIWNAME, &req ); if (ret < 0) { fprintf(stderr, "No wireless extension\n"); return 1; } printf("%s\n", req.ifr_name); printf("%s\n", req.ifr_newname); return 0; } $ ./wifi eth0 No wireless extension $ ./wifi wlan0 wlan0 IEEE 802.11bg Signed-off-by: Laurent Vivier <laurent@vivier.eu> Signed-off-by: Riku Voipio <riku.voipio@iki.fi>
2011-04-26linux-user: convert ioctl(SIOCGIFCONF, ...) result.Laurent Vivier
The result needs to be converted as it is stored in an array of struct ifreq and sizeof(struct ifreq) differs according to target and host alignment rules. This patch allows to execute correctly the following program on arm and m68k: #include <stdio.h> #include <sys/ioctl.h> #include <net/if.h> #include <alloca.h> #include <string.h> #include <sys/socket.h> #include <netinet/in.h> #include <arpa/inet.h> int main(void) { int s, ret; struct ifconf ifc; int i; memset( &ifc, 0, sizeof( struct ifconf ) ); ifc.ifc_len = 8 * sizeof(struct ifreq); ifc.ifc_buf = alloca(ifc.ifc_len); s = socket( AF_INET, SOCK_DGRAM, 0 ); if (s < 0) { perror("Cannot open socket"); return 1; } ret = ioctl( s, SIOCGIFCONF, &ifc ); if (s < 0) { perror("ioctl() failed"); return 1; } for (i = 0; i < ifc.ifc_len / sizeof(struct ifreq) ; i ++) { struct sockaddr_in *s; s = (struct sockaddr_in*)&ifc.ifc_req[i].ifr_addr; printf("%s\n", ifc.ifc_req[i].ifr_name); printf("%s\n", inet_ntoa(s->sin_addr)); } } Signed-off-by: Laurent Vivier <laurent@vivier.eu> Signed-off-by: Riku Voipio <riku.voipio@iki.fi>
2011-04-26[v2] linux-user: bigger default stackRiku Voipio
PTHREAD_STACK_MIN (16KB) is somewhat inadequate for a new stack for new QEMU threads. Set new limit to 256K which should be enough, yet doesn't increase memory pressure significantly. Signed-off-by: Riku Voipio <riku.voipio@nokia.com> Reviewed-by: Nathan Froyd <froydnj@codesourcery.com>
2011-03-22linux-user: Fix unlock_user() call in return from poll()Peter Maydell
Correct the broken attempt to calculate the third argument to unlock_user() in the code path which unlocked the pollfd array on return from poll() and ppoll() emulation. (This only caused a problem if unlock_user() wasn't a no-op, eg if DEBUG_REMAP is defined.) Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2011-03-06linux-user: Fix large seeks by 32 bit guest on 64 bit hostPeter Maydell
When emulating a 32 bit Linux user-mode program on a 64 bit target we implement the llseek syscall in terms of lseek. Correct a bug which meant we were silently casting the result of host lseek() to a 32 bit integer as it passed through get_errno() and thus throwing away the top half. We also don't try to store the result back to userspace unless the seek succeeded; this matches the kernel behaviour. Thanks to Eoghan Sherry for identifying the problem and suggesting a solution. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2011-02-17linux-user: Support the epoll syscallsPeter Maydell
Support the epoll family of syscalls: epoll_create(), epoll_create1(), epoll_ctl(), epoll_wait() and epoll_pwait(). Note that epoll_create1() and epoll_pwait() are later additions, so we have to test separately in configure for their presence. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Riku Voipio <riku.voipio@nokia.com>
2011-02-09linux-user: implement sched_{g,s}etaffinityMike Frysinger
Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Riku Voipio <riku.voipio@nokia.com>
2011-02-09linux-user: add ppoll syscall supportMike Frysinger
Some architectures (like Blackfin) only implement ppoll (and skip poll). So add support for it using existing poll code. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Riku Voipio <riku.voipio@nokia.com>
2011-02-09linux-user: fix sizeof handling for getsockoptMike Frysinger
Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Riku Voipio <riku.voipio@nokia.com>
2011-01-12linux-user: Add configure check for linux/fiemap.h and IOC_FS_FIEMAPPeter Maydell
Add a configure check for the existence of linux/fiemap.h and the IOC_FS_FIEMAP ioctl. This fixes a compilation failure on Linux systems which don't have that header file. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2011-01-07linux-user: Implement FS_IOC_FIEMAP ioctlPeter Maydell
Implement the FS_IOC_FIEMAP ioctl using the new support for custom handling of ioctls; this is needed because the struct that is passed includes a variable-length array. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Riku Voipio <riku.voipio@iki.fi>
2011-01-07linux-user: Support ioctls whose parameter size is not constantPeter Maydell
Some ioctls (for example FS_IOC_FIEMAP) use structures whose size is not constant. The generic argument conversion code in do_ioctl() cannot handle this, so add support for implementing a special-case handler for a particular ioctl which does the conversion itself. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Riku Voipio <riku.voipio@iki.fi>
2011-01-07linux-user: Implement sync_file_range{,2} syscallsPeter Maydell
Implement the missing syscalls sync_file_range and sync_file_range2. The latter in particular is used by newer versions of apt on Ubuntu for ARM. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Riku Voipio <riku.voipio@iki.fi>
2010-12-03linux-user: fix compiler error on nptlRiku Voipio
Some compilers detect that new_stack isnt used after dd75d784 Signed-off-by: Riku Voipio <riku.voipio@nokia.com>
2010-12-03linux-user: Translate getsockopt level optionJamie Lentin
n setsockopt, the socket level options are translated to the hosts' architecture before the real syscall is called, e.g. TARGET_SO_TYPE -> SO_TYPE. This patch does the same with getsockopt. Tested on a x86 host emulating MIPS. Without it:- $ grep getsockopt host.strace 31311 getsockopt(3, SOL_SOCKET, 0x1007 /* SO_??? */, 0xbff17208, 0xbff17204) = -1 ENOPROTOOPT (Protocol not available) With:- $ grep getsockopt host.strace 25706 getsockopt(3, SOL_SOCKET, SO_ERROR, [0], [4]) = 0 Whitespace cleanup: Riku Voipio Signed-off-by: Jamie Lentin <jm@lentin.co.uk> Signed-off-by: Riku Voipio <riku.voipio@iki.fi>
2010-12-03linux-user: fix memory leaks with NPTL emulationNathan Froyd
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>
2010-09-18linux-user: fix socklen_t comparisonsBlue Swirl
On many systems, socklen_t is defined as unsigned. This means that checks for negative values are not meaningful. Fix by explicitly casting to a signed integer. This also avoids some warnings with GCC flag -Wtype-limits. Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2010-06-16Usermode exec-stack fixPaul Brook
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>
2010-06-11s390x: Avoid _llseek.Richard Henderson
There's no _llseek on s390x either. Replace the existing test for __x86_64__ with a functional test for __NR_llseek. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-05-21linux-user: do not warn for missing pselect6Riku Voipio
Libc will fallback gracefully if pselect6 is not available. Thus put pselect6 to nowarn until the atomicity issues of the original pselect6 patch are dealt with. Signed-off-by: Riku Voipio <riku.voipio@nokia.com> Cc: Michael Casadevall <mcasadevall@ubuntu.com> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-05-21alpha-linux-user: Fix sigprocmask.Richard Henderson
Alpha passes oldset by value in a register, and returns the newset as the return value; as compared to the standard implementation in which both are passed by reference. This requires being able to distinguish negative return values that are not errors. Do this in the same way as the Alpha Linux kernel, by storing a zero in V0 in the implementation of the syscall. At the same time, fix a think-o in the regular sigprocmask path in which we passed the target, rather than the host, HOW value. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-05-21alpha-linux-user: Fix sigsuspend parameters.Richard Henderson
Alpha passes the signal set in a register, not by reference. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-05-21alpha-linux-user: Fix getxpid.Richard Henderson
Put ppid in the second return register. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-05-21alpha-linux-user: Fix pipe return mechanism.Richard Henderson
At the same time, tidy the code wrt MIPS and SH4 which have the same two register return mechanism. Fix confusion between pipe and pipe2 with an explicit flags=0, when the guest will not be using the two register return mechanism. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-05-21alpha-linux-user: Fix brk error return.Richard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-05-18linux-user: rlimit conversion between host and target.takasi-y@ops.dti.ne.jp
rlim_t conversion between host and target added. Otherwise there are some incorrect case like - RLIM_INFINITY on 32bit target -> 64bit host. - RLIM_INFINITY on 64bit host -> mips and sparc target ? - Big value(for 32bit target) on 64bit host -> 32bit target. One is added into getrlimit, setrlimit, and ugetrlimit. It converts both RLIM_INFINITY and value bigger than target can hold(>31bit) to RLIM_INFINITY. Another one is added to guest_stack_size calculation introduced by 703e0e89. The rule is mostly same except the result on the case is keeping the value of guest_stack_size. Slightly tested for SH4, and x86_64 -linux-user on x86_64-pc-linux host. Signed-off-by: Takashi YOSHII <takasi-y@ops.dti.ne.jp> Acked-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-04-27target-alpha: Enable NPTL.Richard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-04-26linux-user: Fix sparc32plus stat64 syscalls.Richard Henderson
Check TARGET_ABI_BITS, not TARGET_LONG_BITS, when deciding whether or not the guest needs special 64-bit stat translation. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2010-04-14linux-user: do_shmdt(): Fix page_set_flags's 2nd arg.takasi-y@ops.dti.ne.jp
2nd arg of page_set_flags() should be start+size, but size. Signed-off-by: Takashi YOSHII <takasi-y@ops.dti.ne.jp> Acked-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-04-01Fix compilation with missing inotify_init1Stefan Weil
Commit c05c7a7306a23a4b01d1606172b142c45caffc92 breaks cross compilation for mips (and other compilations without CONFIG_INOTIFY1): make[1]: Entering directory `/qemu/bin/mips' CC i386-linux-user/syscall.o cc1: warnings being treated as errors /qemu/linux-user/syscall.c: In function ‘do_syscall’: /qemu/linux-user/syscall.c:7067: error: implicit declaration of function ‘sys_inotify_init1’ Cc: Riku Voipio <riku.voipio@nokia.com> Cc: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Stefan Weil <weil@mail.berlios.de> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>