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- Apr 04, 2023
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Richard Henderson authored
This reverts commit 4f5c67f8. This exposes bugs in target_mmap et al with respect to overflow with the final page of the guest address space. To be fixed in the next development cycle. Reviewed-by:
Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by:
Richard Henderson <richard.henderson@linaro.org>
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- Mar 30, 2023
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Philippe Mathieu-Daudé authored
Per the release 6.06 revision history: 5.03 August 21, 2013 • ABS2008 and NAN2008 fields of Table 5.7 “FCSR RegisterField Descriptions” were optional in release 3 and could be R/W, but as of release 5 are required, read-only, and preset by hardware. The P5600 core implements the release 5, and has the ABS2008 and NAN2008 bits set in CP1_fcr31. Therefore it is able to run ELF binaries compiled with EF_MIPS_NAN2008, such the CIP United Debian NaN2008 distribution: http://repo.oss.cipunited.com/mipsel-nan2008/README.txt In order to run such compiled binaries, select by default the P5600 core when the ELF 'MIPS_NAN2008' flag is set. Reported-by:
Jiaxun Yang <jiaxun.yang@flygoat.com> Signed-off-by:
Laurent Vivier <laurent@vivier.eu> Message-Id: <20230327162444.388-1-philmd@linaro.org>
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Philippe Mathieu-Daudé authored
The 64-bit SPARC V9 syscall ABI uses 32-bit UIDs. Only enable the 16-bit UID wrappers for 32-bit SPARC (V7 and V8). Possibly missed in commit 992f48a0 ("Support for 32 bit ABI on 64 bit targets (only enabled Sparc64)"). Reported-by:
Gregor Riepl <onitake@gmail.com> Tested-by:
John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> Tested-by:
Zach van Rijn <me@zv.io> Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1394 Signed-off-by:
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- Mar 29, 2023
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Richard Henderson authored
User setting of -R reserved_va can lead to an assertion failure in page_set_flags. Sanity check the value of reserved_va and print an error message instead. Do not allocate a commpage at all for m-profile cpus. Reviewed-by:
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Richard Henderson authored
Change the semantics to be the last byte of the guest va, rather than the following byte. This avoids some overflow conditions. Reviewed-by:
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Richard Henderson authored
Pass the address of the last byte of the image, rather than the first address past the last byte. This avoids overflow when the last page of the address space is involved. Reviewed-by:
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Richard Henderson authored
Pass the address of the last byte to be changed, rather than the first address past the last byte. This avoids overflow when the last page of the address space is involved. Reviewed-by:
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Richard Henderson authored
Pass the address of the last byte to be changed, rather than the first address past the last byte. This avoids overflow when the last page of the address space is involved. Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1528 Reviewed-by:
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Richard Henderson authored
We have been enforcing host page alignment for the non-R fallback of MAX_RESERVED_VA, but failing to enforce for -R. Reviewed-by:
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- Mar 22, 2023
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Richard Henderson authored
This had been pulled in from hw/core/cpu.h, but that will be removed. Signed-off-by:
Alex Bennée <alex.bennee@linaro.org> Message-Id: <20230315174331.2959-16-alex.bennee@linaro.org> Reviewed-by:
Emilio Cota <cota@braap.org>
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Richard Henderson authored
This had been pulled in via qemu/plugin.h from hw/core/cpu.h, but that will be removed. Signed-off-by:
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- Mar 10, 2023
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fanwj@mail.ustc.edu.cn authored
On linux user mode, CPUX86State::gdt::base from Different CPUX86State Objects have same value, It is incorrect! Every CPUX86State::gdt::base Must points to independent memory space. Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1405 Signed-off-by:
fanwenjie <fanwj@mail.ustc.edu.cn> Message-Id: <4172b90.58b08.18631b77860.Coremail.fanwj@mail.ustc.edu.cn> [lv: remove unnecessary casts, split overlong line] Signed-off-by:
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Richard Henderson authored
This trap is raised by taddcctv and tsubcctv insns. Signed-off-by:
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Richard Henderson authored
Raise SIGFPE for ieee exceptions. The other types, such as FSR_FTT_UNIMPFPOP, should not appear, because we enable normal emulation of missing insns at the start of sparc_cpu_realizefn(). Signed-off-by:
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Richard Henderson authored
For sparc64, TT_UNIMP_FLUSH == TT_ILL_INSN, so this is already handled. For sparc32, the kernel uses SKIP_TRAP. Signed-off-by:
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Richard Henderson authored
Since qemu does not implement a sparc coprocessor, all such instructions raise this trap. Because of that, we never raise the coprocessor exception trap, which would be vector 0x28. Signed-off-by:
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Richard Henderson authored
This is raised by using an %asi < 0x80 in user-mode. Signed-off-by:
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Richard Henderson authored
For the most part priviledged opcodes are ifdefed out of the user-only sparc translator, which will then incorrectly produce illegal opcode traps. But there are some code paths that properly raise TT_PRIV_INSN, so we must handle it. Signed-off-by:
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Richard Henderson authored
These are really only meaningful for sparc32, but they're still present for backward compatibility for sparc64. Signed-off-by:
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Richard Henderson authored
In addition to the hw trap vector, there is a software trap assigned for older sparc without hw division instructions. Signed-off-by:
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Richard Henderson authored
This is 'ta 1' for both v9 and pre-v9. Signed-off-by:
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Richard Henderson authored
These traps are present for sparc64 with ilp32, aka sparc32plus. Enabling them means adjusting the defines over in signal.c, and fixing an incorrect usage of abi_ulong when we really meant the full register, target_ulong. Signed-off-by:
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Richard Henderson authored
Add some macros to localize the hw difference between v9 and pre-v9. Signed-off-by:
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Richard Henderson authored
The v9 and pre-v9 code can be unified with this macro. Signed-off-by:
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Richard Henderson authored
Reduce ifdefs with #define syscall_cc. Signed-off-by:
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Richard Henderson authored
Use TT_TRAP. For sparc32, 0x88 is the "Slowaris" system call, currently BAD_TRAP in the kernel's ttable_32.S. For sparc64, 0x110 is tl0_linux32, the sparc32 trap, now folded into the TARGET_ABI32 case via TT_TRAP. For sparc64, there does still exist trap 0x111 as tl0_oldlinux64, which was replaced by 0x16d as tl0_linux64 in 1998. Since no one has noticed, don't bother implementing it now. Signed-off-by:
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Helge Deller authored
Add emulation for the CLONE_PIDFD flag of the clone() syscall. This flag was added in Linux kernel 5.2. Successfully tested on a x86-64 Linux host with hppa-linux target. Can be verified by running the testsuite of the qcoro debian package, which breaks hard and kills the currently logged-in user without this patch. Signed-off-by:
Helge Deller <deller@gmx.de> Reviewed-by:
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Helge Deller authored
msync() uses the flags MS_ASYNC, MS_INVALIDATE and MS_SYNC, which differ between platforms, specifcally on alpha and hppa. Add a target to host translation for those and wire up a nicer strace output. This fixes the testsuite of the macaulay2 debian package with a hppa-linux guest on a x86-64 host. Signed-off-by:
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Mathis Marion authored
Newer kernel versions require this flag to be present contrary to older ones. Depending on the libnl version it is added or not. Typically when using rtnl_link_inet6_set_addr_gen_mode, the netlink packet generated may contain the following attribute: with libnl 3.4 {nla_len=16, nla_type=IFLA_AF_SPEC}, [ {nla_len=12, nla_type=AF_INET6}, [{nla_len=5, nla_type=IFLA_INET6_ADDR_GEN_MODE}, IN6_ADDR_GEN_MODE_NONE] ] with libnl 3.7 {nla_len=16, nla_type=NLA_F_NESTED|IFLA_AF_SPEC}, [ {nla_len=12, nla_type=NLA_F_NESTED|AF_INET6}, [{nla_len=5, nla_type=IFLA_INET6_ADDR_GEN_MODE}, IN6_ADDR_GEN_MODE_NONE]] ] Masking the type is likely needed in other places. Only the above cases are implemented in this patch. Signed-off-by:Mathis Marion <mathis.marion@silabs.com> Reviewed-by:
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Mathis Marion authored
The sin6_scope_id field uses the host byte order, so there is a conversion to be made when host and target endianness differ. Signed-off-by:
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Helge Deller authored
Add proper prlimit64() strace output. Signed-off-by:
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Helge Deller authored
Add a new function print_raw_param64() to print 64-bit values in the same way as print_raw_param(). This prevents that qemu_log() is used to work around the problem that print_raw_param() can only print 32-bit values when compiled for 32-bit targets. Additionally convert the existing 64-bit users in print_timespec64(), print_rlimit64() and print_preadwrite64() over to this new function and drop some unneccessary spaces. Suggested-by:
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Helge Deller authored
The current brk() implementation does not de-allocate pages if a lower address is given compared to earlier brk() calls. But according to the manpage, brk() shall deallocate memory in this case and currently it breaks a real-world application, specifically building the debian gcl package in qemu-user. Fix this issue by reworking the qemu brk() implementation. Tested with the C-code testcase included in qemu commit 4d1de87c, and by building debian package of gcl in a hppa-linux guest on a x86-64 host. Signed-off-by:
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Andreas Schwab authored
Some programs want to match an actual task state character. Signed-off-by:
Andreas Schwab <schwab@suse.de> Reviewed-by:
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Max Filippov authored
Define xtensa-specific info_is_fdpic and fill in FDPIC-specific registers in the xtensa version of init_thread. Signed-off-by:
Max Filippov <jcmvbkbc@gmail.com> Message-Id: <20230205061230.544451-1-jcmvbkbc@gmail.com> Signed-off-by:
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Ilya Leoshkevich authored
target_rlimit64 contains uint64_t fields, so it's 8-byte aligned on some hosts, while some guests may align their respective type on a 4-byte boundary. This may lead to an unaligned access, which is an UB. Fix by defining the fields as abi_ullong. This makes the host alignment match that of the guest, and lets the compiler know that it should emit code that can deal with the guest alignment. While at it, also use __get_user() and __put_user() instead of tswap64(). Fixes: 163a05a8 ("linux-user: Implement prlimit64 syscall") Reported-by:
Ilya Leoshkevich <iii@linux.ibm.com> Reviewed-by:
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Mathis Marion authored
Added conversions for: - IFLA_MTU - IFLA_TXQLEN - IFLA_AF_SPEC AF_INET6 IFLA_INET6_ADDR_GEN_MODE These relate to the libnl functions rtnl_link_set_mtu, rtnl_link_set_txqlen, and rtnl_link_inet6_set_addr_gen_mode. Signed-off-by:
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Mathis Marion authored
When reading the expiration count from a timerfd, the endianness of the 64bit value read is the one of the host, just as for eventfds. Signed-off-by:
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Helge Deller authored
When accsssing /proc/self/exe from a userspace program, linux-user tries to resolve the name via realpath(), which may fail if the process changed the working directory in the meantime. An example: - a userspace program ist started with ./testprogram - the program runs chdir("/tmp") - then the program calls readlink("/proc/self/exe") - linux-user tries to run realpath("./testprogram") which fails because ./testprogram isn't in /tmp - readlink() will return -ENOENT back to the program Avoid this issue by resolving the full path name of the started process at startup of linux-user and store it in real_exec_path[]. This then simplifies the emulation of readlink() and readlinkat() as well, because they can simply copy the path string to userspace. I noticed this bug because the testsuite of the debian package "pandoc" failed on linux-user while it succeeded on real hardware. The full log is here: https://buildd.debian.org/status/fetch.php?pkg=pandoc&arch=hppa&ver=2.17.1.1-1.1%2Bb1&stamp=1670153210&raw=0 Signed-off-by:
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- Mar 07, 2023
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Alex Bennée authored
Our GDB syscall support is the last chunk of code that needs target specific support so move it to a new file. We take the opportunity to move the syscall state into its own singleton instance and add in a few helpers for the main gdbstub to interact with the module. I also moved the gdb_exit() declaration into syscalls.h as it feels pretty related and most of the callers of it treat it as such. Reviewed-by:
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