Errors are not all negative numbers: use is_error.
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220602013401.303699-16-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
According to the M68040 Users Manual, section 8.4.3,
Six word stack frame (format 2), Trace (and others) is
supposed to record the next insn in PC and the address
of the trapping instruction in ADDRESS.
Create gen_raise_exception_format2 to record the trapping
pc in env->mmu.ar. Update m68k_interrupt_all to pass the
value to do_stack_frame. Update cpu_loop to handle EXCP_TRACE.
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220602013401.303699-9-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
According to the M68040 Users Manual, section 8.4.3,
Six word stack frame (format 2), Zero Div (and others)
is supposed to record the next insn in PC and the
address of the trapping instruction in ADDRESS.
While the N, Z and V flags are documented to be undefine on DIV0,
the C flag is documented as always cleared.
Update helper_div* to take the instruction length as an argument
and use raise_exception_format2. Hoist the reset of the C flag
above the division by zero check.
Update m68k_interrupt_all to pass mmu.ar to do_stack_frame.
Update cpu_loop to pass mmu.ar to siginfo.si_addr, as the
kernel does in trap_c().
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220602013401.303699-8-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
According to the M68040 Users Manual, section 8.4.3,
Six word stack frame (format 2), CHK, CHK2 (and others)
are supposed to record the next insn in PC and the
address of the trapping instruction in ADDRESS.
Create a raise_exception_format2 function to centralize recording
of the trapping pc in mmu.ar, plus advancing to the next insn.
Update m68k_interrupt_all to pass mmu.ar to do_stack_frame.
Update cpu_loop to pass mmu.ar to siginfo.si_addr, as the
kernel does in trap_c().
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220602013401.303699-7-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
These are raised by guest instructions, and should not
fall through into the default abort case.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220602013401.303699-5-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Rather than adjust the PC in all of the consumers, raise
the exception with the correct PC in the first place.
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220602013401.303699-2-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
These are new hwcap bits added for power10.
Signed-off-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Lucas Mateus Castro (alqotel) <lucas.araujo@eldorado.org.br>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220524140537.27451-9-lucas.araujo@eldorado.org.br>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
clang-built s390x branch-relative-long test fails on clang-built s390x
QEMU due to the following sequence of events:
- The test zeroes out a code page, clang generates exrl+xc for this.
- do_helper_xc() is called. Clang generates exrl+xc there as well.
- Since there already exists a TB for the code in question, its page is
read-only and SIGSEGV is raised.
- host_signal_handler() calls host_signal_write() and the latter does
not recognize exrl as a write. Therefore page_unprotect() is not
called and the signal is forwarded to the test.
Fix by treating EXRL (and EX, just in case) as writes. There may be
false positives, but they will lead only to an extra page_unprotect()
call.
Reported-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Tested-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220504114819.1729737-1-iii@linux.ibm.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Commit 31330e6cec ("linux-user/s390x: Implement setup_sigtramp")
removed an unused field from rt_sigframe, disturbing offsets of other
fields and breaking unwinding from signal handlers (e.g. libgcc's
s390_fallback_frame() relies on this struct having a specific layout).
Restore the field and add a comment.
Reported-by: Ulrich Weigand <ulrich.weigand@de.ibm.com>
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Fixes: 31330e6cec ("linux-user/s390x: Implement setup_sigtramp")
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220503225157.1696774-2-iii@linux.ibm.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
fill_thread_info() takes a pointer to const.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220509205728.51912-2-philippe.mathieu.daude@gmail.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
RLIMIT_RTTIME is not provided by uclibc-ng or by musl prior to version
1.2.0 and
2507e7f531
resulting in the following build failure since
https://git.qemu.org/?p=qemu.git;a=commit;h=244fd08323088db73590ff2317dfe86f810b51d7:
../linux-user/syscall.c: In function 'target_to_host_resource':
../linux-user/syscall.c:1057:16: error: 'RLIMIT_RTTIME' undeclared (first use in this function); did you mean 'RLIMIT_NOFILE'?
1057 | return RLIMIT_RTTIME;
| ^~~~~~~~~~~~~
| RLIMIT_NOFILE
Fixes:
- http://autobuild.buildroot.org/results/22d3b584b704613d030e1ea9e6b709b713e4cc26
Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20220523105239.1499162-1-fontaine.fabrice@gmail.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
We had two sets of variables: arg_start/arg_end, and
arg_strings/env_strings. In linuxload.c, we set the
first pair to the bounds of the argv strings, but in
elfload.c, we set the first pair to the bounds of the
argv pointers and the second pair to the bounds of
the argv strings.
Remove arg_start/arg_end, replacing them with the standard
argc/argv/envc/envp values. Retain arg_strings/env_strings
with the meaning we were using in elfload.c.
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/714
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220427025129.160184-1-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Cleaned up with scripts/clean-header-guards.pl.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20220506134911.2856099-5-armbru@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
We missed out on a couple of exception types that may
legitimately be raised by a userland program.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220421151735.31996-59-richard.henderson@linaro.org>
The exception return address for nios2 is the instruction
after the one that was executing at the time of the exception.
We have so far implemented this by advancing the pc during the
process of raising the exception. It is perhaps a little less
confusing to do this advance in the translator (and helpers)
when raising the exception in the first place, so that we may
more closely match kernel sources.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20220421151735.31996-58-richard.henderson@linaro.org>
Indirect branches, plus eret and bret optionally raise
an exception when branching to a misaligned address.
The exception is required when an mmu is enabled, but
enable it always because the fallback behaviour is not
documented (though presumably it discards low bits).
For the purposes of the linux-user cpu loop, if EXCP_UNALIGN
(misaligned data) were to arrive, it would be treated the
same as EXCP_UNALIGND (misaligned destination). See the
!defined(CONFIG_NIOS2_ALIGNMENT_TRAP) block in kernel/traps.c.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220421151735.31996-53-richard.henderson@linaro.org>
Division may (optionally) raise a division exception.
Since the linux kernel has been prepared for this for
some time, enable it by default.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220421151735.31996-42-richard.henderson@linaro.org>
Drop the set of estatus in init_thread; it was clearly intended
to be setting the value of CR_STATUS for the application, but we
never actually performed that copy. However, the proper value is
set in nios2_cpu_reset so we don't need to do anything here.
We only initialize SP and EA in init_thread, there's no value in
copying other uninitialized data into ENV.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220421151735.31996-21-richard.henderson@linaro.org>
It is cleaner to have a separate name for this variable.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220421151735.31996-17-richard.henderson@linaro.org>
Use the simpler signal interface, which forces us to supply
the missing PC value to si_addr.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20220421151735.31996-13-richard.henderson@linaro.org>
Since f5ef0e518d, we have a real page mapped for kuser,
which means the special casing for SIGSEGV can go away.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20220421151735.31996-11-richard.henderson@linaro.org>
Drop the kernel-specific "pr2" code structure and use
the qemu-specific error return value.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220421151735.31996-8-richard.henderson@linaro.org>
There is no sigreturn syscall, only rt_sigreturn.
This function is unused.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220421151735.31996-7-richard.henderson@linaro.org>
Honor QEMU_ESIGRETURN and QEMU_ERESTARTSYS.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220421151735.31996-6-richard.henderson@linaro.org>
Follow the kernel assembly, which considers all negative
return values to be errors.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220421151735.31996-5-richard.henderson@linaro.org>
Syscall 0 is __NR_io_setup for this target; there is nothing
to work around.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Fixes: a0a839b65b ("nios2: Add usermode binaries emulation")
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220421151735.31996-4-richard.henderson@linaro.org>
The child side of clone needs to set the secondary
syscall return value, r7, to indicate syscall success.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220421151735.31996-3-richard.henderson@linaro.org>
Note that this advance *should* be done by the translator, as
that's the pc value that's supposed to be generated by hardware.
However, that's a much larger change across sysemu as well.
In the meantime, produce the correct PC for any signals raised
by the trap instruction. Note the special case of TRAP_BRKPT,
which itself is special cased within the kernel.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220421151735.31996-2-richard.henderson@linaro.org>
Bool is a more appropriate type for this value.
Adjust the assignments to use true/false.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
G_NORETURN was introduced in glib 2.68, fallback to G_GNUC_NORETURN in
glib-compat.
Note that this attribute must be placed before the function declaration
(bringing a bit of consistency in qemu codebase usage).
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Warner Losh <imp@bsdimp.com>
Message-Id: <20220420132624.2439741-20-marcandre.lureau@redhat.com>
This header only defines the tcg_allowed variable and the tcg_enabled()
function - which are not required in many files that include this
header. Drop the #include statement there.
Signed-off-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20220315144107.1012530-1-thuth@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Perform all logfile setup in one step.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220417183019.755276-30-richard.henderson@linaro.org>
We have extra stuff to log at the same time.
Hoist the qemu_log_lock/unlock to the caller and use fprintf.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220417183019.755276-23-richard.henderson@linaro.org>
Do not force exit within qemu_set_log; return bool and pass
an Error value back up the stack as per usual.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220417183019.755276-5-richard.henderson@linaro.org>
This buffering was introduced during the Paleozoic: 9fa3e85353.
There has never been an explanation as to why we may not allow
glibc to allocate the file buffer itself. We certainly have
many other uses of mmap and malloc during user-only startup,
so presumably whatever the issue was, it has been fixed during
the preceeding 18 years.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220417183019.755276-2-richard.henderson@linaro.org>
Replace the global variables with inlined helper functions. getpagesize() is very
likely annotated with a "const" function attribute (at least with glibc), and thus
optimization should apply even better.
This avoids the need for a constructor initialization too.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20220323155743.1585078-12-marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Convert the TARGET_WORDS_BIGENDIAN macro, similarly to what was done
with HOST_BIG_ENDIAN. The new TARGET_BIG_ENDIAN macro is either 0 or 1,
and thus should always be defined to prevent misuse.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Suggested-by: Halil Pasic <pasic@linux.ibm.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220323155743.1585078-8-marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Replace a config-time define with a compile time condition
define (compatible with clang and gcc) that must be declared prior to
its usage. This avoids having a global configure time define, but also
prevents from bad usage, if the config header wasn't included before.
This can help to make some code independent from qemu too.
gcc supports __BYTE_ORDER__ from about 4.6 and clang from 3.2.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
[ For the s390x parts I'm involved in ]
Acked-by: Halil Pasic <pasic@linux.ibm.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220323155743.1585078-7-marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Coverity warns that we shift a 32-bit value by N, and then
accumulate it into a 64-bit type (target_ulong on ppc64).
The ccr is always 8 * 4-bit fields, and thus is always a
32-bit quantity; narrow the type to avoid the warning.
Fixes: Coverity CID 1487223
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20220401191643.330393-1-richard.henderson@linaro.org>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Seen while compiling on Alpine:
In file included from ../linux-user/strace.c:17:
In file included from ../linux-user/qemu.h:11:
In file included from ../linux-user/syscall_defs.h:1247:
../linux-user/sh4/termbits.h:276:10: warning: 'TIOCSER_TEMT' macro redefined
[-Wmacro-redefined]
# define TIOCSER_TEMT 0x01 /* Transmitter physically empty */
^
/usr/include/sys/ioctl.h:50:9: note: previous definition is here
#define TIOCSER_TEMT 1
^
1 warning generated.
Add the TARGET_ prefix here, too, like we do it on the other architectures.
Signed-off-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Yoshinori Sato <ysato@users.sourceforge.jp>
Message-Id: <20220330134302.979686-1-thuth@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
If CONFIG_ATOMIC64, we can use a host cmpxchg and provide
atomicity across processes; otherwise we have no choice but
to continue using start/end_exclusive.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220323005839.94327-4-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
The existing implementation using start/end_exclusive
does not provide atomicity across processes.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220323005839.94327-3-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
This fallback syscall was stubbed out.
It would only matter for emulating pre-armv6.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220323005839.94327-2-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Unblocked signals are never delivered, because we
didn't record the new mask for process_pending_signals.
Handle this with the same mechanism as sigsuspend.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20220315084308.433109-6-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Unblocked signals are never delivered, because we
didn't record the new mask for process_pending_signals.
Handle this with the same mechanism as sigsuspend.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20220315084308.433109-5-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Unblocked signals are never delivered, because we
didn't record the new mask for process_pending_signals.
Handle this with the same mechanism as sigsuspend.
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/834
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20220315084308.433109-4-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Two new functions: process_sigsuspend_mask and finish_sigsuspend_mask.
Move the size check and copy-from-user code.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20220315084308.433109-3-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
On alpha, the sigset argument for sigsuspend is in a register.
When we drop that into memory that happens in host-endianness,
but target_to_host_old_sigset will treat it as target-endianness.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20220315084308.433109-2-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
The MIPS n32 ABI is basically n64 with the address space (i.e. pointer
width) shrinked to 32 bits. Meanwhile the current code treats it as
o32-like based on TARGET_ABI_BITS, which causes problems with n32
syscalls utilizing 64-bit offsets, like pread64, affecting most (if not
all) recently built n32 binaries.
This partially solves issue #909 ("qemu-mipsn32(el) user mode emulator
fails to execute any recently built n32 binaries"); with this change
applied, the built qemu-mipsn32el is able to progress beyond the
pread64, and finish _dl_start_user for the "getting ld.so load libc.so"
case. The program later dies with SIGBUS, though, due to _dl_start_user
not maintaining stack alignment after removing ld.so itself from argv,
and qemu-user starting to enforce alignment recently, but that is
orthogonal to the issue here; the more common case of chrooting is
working, verified with my own-built Gentoo n32 sysroot. (Depending on
the exact ISA used, one may have to explicitly specify QEMU_CPU, which
is the case for my chroot.)
Buglink: https://gitlab.com/qemu-project/qemu/-/issues/909
Signed-off-by: WANG Xuerui <xen0n@gentoo.org>
Cc: Laurent Vivier <laurent@vivier.eu>
Cc: Philippe Mathieu-Daudé <f4bug@amsat.org>
Cc: Jiaxun Yang <jiaxun.yang@flygoat.com>
Cc: Andreas K. Hüttel <dilfridge@gentoo.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20220320052259.1610883-1-xen0n@gentoo.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
g_new(T, n) is neater than g_malloc(sizeof(T) * n). It's also safer,
for two reasons. One, it catches multiplication overflowing size_t.
Two, it returns T * rather than void *, which lets the compiler catch
more type errors.
This commit only touches allocations with size arguments of the form
sizeof(T).
Patch created mechanically with:
$ spatch --in-place --sp-file scripts/coccinelle/use-g_new-etc.cocci \
--macro-file scripts/cocci-macro-file.h FILES...
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Acked-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Message-Id: <20220315144156.1595462-4-armbru@redhat.com>
Reviewed-by: Pavel Dovgalyuk <Pavel.Dovgalyuk@ispras.ru>
Remove pt_regs indirection and instead reference gp_regs directly, this
makes it portable across musl/glibc
Use PT_* constants defined in asm/ptrace.h
Move the file to ppc64 subdir and leave ppc empty
Fixes
../qemu-6.2.0/linux-user/host/ppc64/../ppc/host-signal.h:16:32: error: incomplete definition of type 'struct pt_regs'
return uc->uc_mcontext.regs->nip;
~~~~~~~~~~~~~~~~~~~~^
Signed-off-by: Khem Raj <raj.khem@gmail.com>
Cc: Peter Maydell <peter.maydell@linaro.org>
Cc: Philippe Mathieu-Daudé <f4bug@amsat.org>
Cc: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220315015740.847370-1-raj.khem@gmail.com>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Handle POWERPC_EXCP_TRAP in cpu_loop to deliver SIGTRAP on tw[i]/td[i].
The si_code comes from do_program_check in the kernel source file
arch/powerpc/kernel/traps.c
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Matheus Ferst <matheus.ferst@eldorado.org.br>
Message-Id: <20220113170456.1796911-2-matheus.ferst@eldorado.org.br>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
In linux-user/signal.c we have two FIXME comments claiming that
parts of the signal-handling code are not threadsafe. These are
very old, as they were first introduced in commit 624f797905
in 2008. Since then we've radically overhauled the signal-handling
logic, while carefully preserving these FIXME comments.
It's unclear exactly what thread-safety issue the original
author was trying to point out -- the relevant data structures
are in the TaskStruct, which makes them per-thread and only
operated on by that thread. The old code at the time of that
commit did have various races involving signal handlers being
invoked at awkward times; possibly this was what was meant.
Delete these FIXME comments:
* they were written at a time when the way we handled
signals was completely different
* the code today appears to us to not have thread-safety issues
* nobody knows what the problem the comments were trying to
point out was
so they are serving no useful purpose for us today.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Warner Losh <imp@bsdimp.com>
Message-Id: <20220114155032.3767771-1-peter.maydell@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Fix host signal handling for sparc64-linux.
Speedups for jump cache and work list probing.
Fix for exception replays.
Raise guest SIGBUS for user-only misaligned accesses.
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Merge remote-tracking branch 'remotes/rth-gitlab/tags/pull-tcg-20220211' into staging
Fix safe_syscall_base for sparc64.
Fix host signal handling for sparc64-linux.
Speedups for jump cache and work list probing.
Fix for exception replays.
Raise guest SIGBUS for user-only misaligned accesses.
# gpg: Signature made Fri 11 Feb 2022 01:27:16 GMT
# gpg: using RSA key 7A481E78868B4DB6A85A05C064DF38E8AF7E215F
# gpg: issuer "richard.henderson@linaro.org"
# gpg: Good signature from "Richard Henderson <richard.henderson@linaro.org>" [full]
# Primary key fingerprint: 7A48 1E78 868B 4DB6 A85A 05C0 64DF 38E8 AF7E 215F
* remotes/rth-gitlab/tags/pull-tcg-20220211: (34 commits)
tests/tcg/multiarch: Add sigbus.c
tcg/sparc: Support unaligned access for user-only
tcg/sparc: Add tcg_out_jmpl_const for better tail calls
tcg/sparc: Use the constant pool for 64-bit constants
tcg/sparc: Convert patch_reloc to return bool
tcg/sparc: Improve code gen for shifted 32-bit constants
tcg/sparc: Add scratch argument to tcg_out_movi_int
tcg/sparc: Split out tcg_out_movi_imm32
tcg/sparc: Use tcg_out_movi_imm13 in tcg_out_addsub2_i64
tcg/mips: Support unaligned access for softmmu
tcg/mips: Support unaligned access for user-only
tcg/arm: Support raising sigbus for user-only
tcg/arm: Reserve a register for guest_base
tcg/arm: Support unaligned access for softmmu
tcg/arm: Check alignment for ldrd and strd
tcg/arm: Remove use_armv6_instructions
tcg/arm: Remove use_armv5t_instructions
tcg/arm: Drop support for armv4 and armv5 hosts
tcg/loongarch64: Support raising sigbus for user-only
tcg/tci: Support raising sigbus for user-only
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
It's likely broken, and nobody cared for picking it up again
during the deprecation phase, so let's remove this now.
Since this is the last entry in deprecated_targets_list, remove
the related code in the configure script, too.
Signed-off-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Acked-by: Cédric Le Goater <clg@kaod.org>
Acked-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20211215084958.185214-1-thuth@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20220112112722.3641051-32-alex.bennee@linaro.org>
The PowerPC 601 processor is the first generation of processors to
implement the PowerPC architecture. It was designed as a bridge
processor and also could execute most of the instructions of the
previous POWER architecture. It was found on the first Macs and IBM
RS/6000 workstations.
There is not much interest in keeping the CPU model of this
POWER-PowerPC bridge processor. We have the 603 and 604 CPU models of
the 60x family which implement the complete PowerPC instruction set.
Cc: "Hervé Poussineau" <hpoussin@reactos.org>
Cc: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Fabiano Rosas <farosas@linux.ibm.com>
Message-Id: <20220203142756.1302515-1-clg@kaod.org>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Sparc64 is unique on linux in *not* passing ucontext_t as
the third argument to a SA_SIGINFO handler. It passes the
old struct sigcontext instead.
Set both pc and npc in host_signal_set_pc.
Fixes: 8b5bd46193 ("linux-user/host/sparc: Populate host_signal.h")
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
We do not support sparc32 as a host, so there's no point in
sparc64 redirecting to sparc.
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Do not directly access ucontext_t as the third signal parameter.
This is preparation for a sparc64 fix.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Do not directly access the uc_sigmask member.
This is preparation for a sparc64 fix.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Linux kernel does it this way (checks read permission before validating `how`)
and the latest version of ABSL's `AddressIsReadable()` depends on this
behavior.
c.f. 9539ba4308/kernel/signal.c (L3147)
Reviewed-by: Patrick Venture <venture@google.com>
Signed-off-by: Shu-Chun Weng <scw@google.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Patrick Venture <venture@google.com>
Message-Id: <20220126212559.1936290-2-venture@google.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
The inotify implementation originally called the raw host syscalls.
Commit 3b3f24add0 changed this to use the glibc wrappers. However ifdefs
in syscall.c still test for presence of the raw syscalls.
This causes a problem on e.g. aarch64 hosts which never had the
inotify_init syscall - it had been obsoleted by inotify_init1 before
aarch64 was invented! However it does have a perfectly good glibc
implementation of inotify_wait.
Fix this by removing all the raw __NR_inotify_* tests, and instead check
CONFIG_INOTIFY, which already tests for the glibc functionality we use.
Also remove the now-pointless sys_inotify* wrappers.
Tested using x86-64 inotifywatch on aarch64 host, and vice-versa
Signed-off-by: Paul Brook <paul@nowt.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20220126202636.655289-1-paul@nowt.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Alpha uses different values of some TARGET_RLIMIT_* constants, which were
missing and caused bugs like #577, fixed thus. Also rearranged all three
(alpha, mips and sparc) that differ from everyone else for clarity.
Signed-off-by: Serge Belyshev <belyshev@depni.sinp.msu.ru>
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/577
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <87y236lpwb.fsf@depni.sinp.msu.ru>
[lv: replace tabs by spaces]
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
The linux-user struct TaskState has an 'aligned(16)' attribute. When
the struct was first added in commit 851e67a1b4 in 2003, there was
a justification in a comment (still present in the source today):
/* NOTE: we force a big alignment so that the stack stored after is
aligned too */
because the final field in the struct was "uint8_t stack[0];"
But that field was removed in commit 48e15fc2d in 2010 which
switched us to allocating the stack and the TaskState separately.
Because we allocate the structure with g_new0() rather than as
a local variable, the attribute made no difference to the alignment
of the structure anyway.
Remove the unnecessary attribute, and the corresponding comment.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20220114153732.3767229-2-peter.maydell@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
- fix compiler warnings with ui and sdl
- update QXL/spice dependancy
- skip I/O tests on Alpine
- update fedora image to latest version
- integrate lcitool and regenerate docker images
- favour CONFIG_LINUX_USER over CONFIG_LINUX
- add libfuse3 dependencies to docker images
- add dtb-kaslr-seed control knob to virt machine
- fix build breakage from HMP update
- update docs for C standard and suffix usage
- add more logging for debugging user hole finding
- expand reserve for brk() for static 64 bit programs
- fix bug with linux-user hole calculation
- avoid affecting flags when printing results in float tests
- add float reference files for ppc64
- update FreeBSD to 12.3
- add bison dependancy to tricore images
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Merge remote-tracking branch 'remotes/stsquad/tags/pull-for-7.0-180122-2' into staging
Various testing and other misc updates:
- fix compiler warnings with ui and sdl
- update QXL/spice dependancy
- skip I/O tests on Alpine
- update fedora image to latest version
- integrate lcitool and regenerate docker images
- favour CONFIG_LINUX_USER over CONFIG_LINUX
- add libfuse3 dependencies to docker images
- add dtb-kaslr-seed control knob to virt machine
- fix build breakage from HMP update
- update docs for C standard and suffix usage
- add more logging for debugging user hole finding
- expand reserve for brk() for static 64 bit programs
- fix bug with linux-user hole calculation
- avoid affecting flags when printing results in float tests
- add float reference files for ppc64
- update FreeBSD to 12.3
- add bison dependancy to tricore images
# gpg: Signature made Tue 18 Jan 2022 16:47:42 GMT
# gpg: using RSA key 6685AE99E75167BCAFC8DF35FBD0DB095A9E2A44
# gpg: Good signature from "Alex Bennée (Master Work Key) <alex.bennee@linaro.org>" [full]
# Primary key fingerprint: 6685 AE99 E751 67BC AFC8 DF35 FBD0 DB09 5A9E 2A44
* remotes/stsquad/tags/pull-for-7.0-180122-2: (31 commits)
docker: include bison in debian-tricore-cross
FreeBSD: Upgrade to 12.3 release
test/tcg/ppc64le: Add float reference files
tests/tcg/multiarch: Read fp flags before printf
linux-user: don't adjust base of found hole
linux-user/elfload: add extra logging for hole finding
linux-user: expand reserved brk space for 64bit guests
docs/devel: more documentation on the use of suffixes
docs/devel: update C standard to C11
monitor: move x-query-profile into accel/tcg to fix build
hw/arm: add control knob to disable kaslr_seed via DTB
tests/docker: add libfuse3 development headers
tests/tcg: use CONFIG_LINUX_USER, not CONFIG_LINUX
tests/docker: auto-generate alpine.docker with lcitool
tests/docker: fully expand the alpine package list
tests/docker: fix sorting of alpine image package lists
tests/docker: updates to alpine package list
.gitlab-ci.d/cirrus: auto-generate variables with lcitool
tests/docker: remove ubuntu.docker container
tests/docker: auto-generate opensuse-leap.docker with lcitool
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The pgb_find_hole function goes to the trouble of taking account of
both mmap_min_addr and any offset we've applied to decide the starting
address of a potential hole. This is especially important for
emulating 32bit ARM in a 32bit build as we have applied the offset to
ensure there will be space to map the ARM_COMMPAGE bellow the main
guest map (using wrapped arithmetic).
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/690
Message-Id: <20220105135009.1584676-27-alex.bennee@linaro.org>
The various approaches to finding memory holes are quite complicated
to follow especially at a distance. Improve the logging so we can see
exactly what method found the space for the guest memory.
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Warner Losh <imp@bsdimp.com>
Message-Id: <20220105135009.1584676-26-alex.bennee@linaro.org>
A recent change to fix commpage allocation issues on 32bit hosts
revealed another intermittent issue on s390x. The root cause was the
headroom we give for the brk space wasn't enough causing the guest to
attempt to map something on top of QEMUs own pages. We do not
currently do anything to protect from this (see #555).
By inspection the brk mmap moves around and top of the address range
has been measured as far as 19Mb away from the top of the binary. As
we chose a smallish number to keep 32bit on 32 bit feasible we only
increase the gap for 64 bit guests. This does mean that 64-on-32
static binaries are more likely to fail to find a hole in the address
space but that is hopefully a fairly rare situation.
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20220113165550.4184455-1-alex.bennee@linaro.org>
It's been unused for 7 years since 907f5fddaa when linux-user stopped
queueing any signals.
Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20220116204423.16133-2-imp@bsdimp.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
The linux-user queue_signal() function always returns 1, and none of
its callers check the return value. Give it a void return type
instead.
The return value is a leftover from the old pre-2016 linux-user
signal handling code, which really did have a queue of signals and so
might return a failure indication if too many signals were queued at
once. The current design avoids having to ever have more than one
signal queued via queue_signal() at once, so it can never fail.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20220114153732.3767229-4-peter.maydell@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
In commit c599d4d6d6 in 2016 we renamed the old force_sig()
function to dump_core_and_abort(), but we forgot to rename the
associated tracepoint. Rename the tracepoint to to match the
function it's called from.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20220114153732.3767229-3-peter.maydell@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Fix a typo in a comment in the arm cpu_loop code.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Warner Losh <imp@bsdimp.com>
Message-Id: <20220114182535.3804783-1-peter.maydell@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* KVM_GET/SET_SREGS2 support for x86
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Merge remote-tracking branch 'remotes/bonzini-gitlab/tags/for-upstream' into staging
* configure and meson cleanups
* KVM_GET/SET_SREGS2 support for x86
# gpg: Signature made Wed 12 Jan 2022 13:09:19 GMT
# gpg: using RSA key F13338574B662389866C7682BFFBD25F78C7AE83
# gpg: issuer "pbonzini@redhat.com"
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" [full]
# gpg: aka "Paolo Bonzini <pbonzini@redhat.com>" [full]
# Primary key fingerprint: 46F5 9FBD 57D6 12E7 BFD4 E2F7 7E15 100C CD36 69B1
# Subkey fingerprint: F133 3857 4B66 2389 866C 7682 BFFB D25F 78C7 AE83
* remotes/bonzini-gitlab/tags/for-upstream:
meson: reenable filemonitor-inotify compilation
meson: build all modules by default
configure: do not create roms/seabios/config.mak if SeaBIOS not present
tests/tcg: Fix target-specific Makefile variables path for user-mode
KVM: x86: ignore interrupt_bitmap field of KVM_GET/SET_SREGS
KVM: use KVM_{GET|SET}_SREGS2 when supported.
meson: add comments in the target-specific flags section
configure, meson: move config-poison.h to meson
meson: build contrib/ executables after generated headers
configure: move non-command-line variables away from command-line parsing section
configure: parse --enable/--disable-strip automatically, flip default
configure, makefile: remove traces of really old files
configure: do not set bsd_user/linux_user early
configure: simplify creation of plugin symbol list
block/file-posix: Simplify the XFS_IOC_DIOINFO handling
meson: cleanup common-user/ build
user: move common-user includes to a subdirectory of {bsd,linux}-user/
meson: reuse common_user_inc when building files specific to user-mode emulators
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Avoid polluting the compilation of common-user/ with local include files;
making an include file available to common-user/ should be a deliberate
decision in order to keep a clear interface that can be used by both
bsd-user/ and linux-user/.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The clang in Ubuntu 18.04 (10.0.0-4ubuntu1) produces a warning
on the code added in commit f5ef0e518d where we use a
shifted expression in a boolean context:
../../linux-user/elfload.c:2423:16: error: converting the result of '<<' to a boolean always evaluates to true [-Werror,-Wtautological-constant-compare]
} else if (LO_COMMPAGE) {
^
../../linux-user/elfload.c:1102:22: note: expanded from macro 'LO_COMMPAGE'
#define LO_COMMPAGE TARGET_PAGE_SIZE
^
/mnt/nvmedisk/linaro/qemu-from-laptop/qemu/include/exec/cpu-all.h:231:31: note: expanded from macro 'TARGET_PAGE_SIZE'
#define TARGET_PAGE_SIZE (1 << TARGET_PAGE_BITS)
^
1 error generated.
The warning is bogus because whether LO_COMMPAGE is zero or not
depends on compile-time ifdefs; shut the compiler up by adding
an explicit comparison to zero.
Fixes: f5ef0e518d ("linux-user/nios2: Map a real kuser page")
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-id: 20220111082900.3341274-1-peter.maydell@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This is PR_CAPBSET_READ, PR_CAPBSET_DROP and the "legacy"
PR_CAP_AMBIENT PR_GET_SECUREBITS, PR_SET_SECUREBITS.
All of these arguments are integer values only, and do not
require mapping of values between host and guest.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20220106225738.103012-5-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Convert the host signal number to guest signal number
before returning the value to the guest.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20220106225738.103012-3-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
The kernel does not special-case arg2 != NULL, so
neither should we.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20220106225738.103012-2-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Place it next to copy_from/to_user_oabi_flock64, the only users,
inside the existing target-specific ifdef. This leaves only
generic ipc structs in target_structs.h.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20220107042600.149852-2-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Use the new function instead of setting up a target_siginfo_t
and calling queue_signal. Fill in the missing PC for SIGTRAP.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220107213243.212806-25-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Use the new function instead of setting up a target_siginfo_t
and calling queue_signal. Fill in the missing PC for SIGTRAP.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220107213243.212806-24-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Use the new function instead of setting up a target_siginfo_t
and calling queue_signal. Fill in the missing PC for SIGTRAP.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220107213243.212806-23-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Use the new function instead of setting up a target_siginfo_t
and calling queue_signal.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220107213243.212806-22-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Use the new function instead of setting up a target_siginfo_t
and calling queue_signal. Fix missing PC from EXCP_DEBUG by
merging the case with EXCP_BREAKPOINT.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220107213243.212806-21-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Use the new function instead of setting up a target_siginfo_t
and calling queue_signal. Fill in the missing PC for SIGTRAP.
The fault address for POWERPC_EXCP_ISI is nip exactly, not nip - 4.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220107213243.212806-20-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Use the new function instead of setting up a target_siginfo_t
and calling queue_signal. Fill in the missing PC for SIGTRAP.
Reviewed-by: Stafford Horne <shorne@gmail.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220107213243.212806-19-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Simplify cpu_loop by doing all of the decode in translate.
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220107213243.212806-18-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Simplify cpu_loop by doing all of the decode in translate.
This fixes a bug in that cpu_loop was not handling the
different layout of the R6 version of break16. This fixes
a bug in that cpu_loop extracted the wrong bits for the
mips16e break16 instruction.
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220107213243.212806-17-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Use the new function instead of setting up a target_siginfo_t
and calling queue_signal. Fill in the missing PC for SIGTRAP
and SIGFPE; use force_sig (SI_KERNEL) for EXCP_DSPDIS.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220107213243.212806-16-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Rename to do_tr_or_bp, as per the kernel function.
Add a 'trap' argument, akin to the kernel's si_code, but clearer.
The return value is always 0, so change the return value to void.
Use force_sig and force_sig_fault.
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220107213243.212806-15-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Fix a typo for ESR_EC_DIVZERO, which is integral not floating-point.
Fix the if ladder for decoding floating-point exceptions.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220107213243.212806-14-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Use the new function instead of setting up a target_siginfo_t
and calling queue_signal. Fill in the missing PC for SIGTRAP.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220107213243.212806-13-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Use the new function instead of setting up a target_siginfo_t
and calling queue_signal. Fill in the missing PC for SIGTRAP.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220107213243.212806-12-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Replace the local gen_signal with the generic functions that match
how the kernel raises signals. Fill in the missing PC for SIGTRAP.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220107213243.212806-11-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reduce the number of ifdefs within cpu_loop().
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220107213243.212806-10-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
This si_code was changed in 75abf64287cab, for linux 4.17.
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220107213243.212806-9-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
This define is unused, and we have no similar define for
the other signal sub-codes.
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220107213243.212806-8-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
These si_codes have been properly set by the kernel since the beginning.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220107213243.212806-7-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Use the new function instead of setting up a target_siginfo_t
and calling queue_signal. Fill in the missing PC for SIGTRAP
and missing si_code for SIGBUS.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220107213243.212806-6-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Use the new function instead of setting up a target_siginfo_t
and calling queue_signal. Fill in the missing PC for SIGTRAP.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220107213243.212806-5-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Use the new function instead of setting up a target_siginfo_t
and calling queue_signal.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220107213243.212806-4-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
This si_code was changed in 4cc13e4f6d441, for linux 4.17.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220107213243.212806-3-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
These si_codes were changed in 535906c684fca, for linux 4.17.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220107213243.212806-2-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
add IFLA_BRPORT_MCAST_EHT_HOSTS_LIMIT and IFLA_BRPORT_MCAST_EHT_HOSTS_CNT
# QEMU_LOG=unimp ip a
Unknown QEMU_IFLA_BRPORT type 37
Unknown QEMU_IFLA_BRPORT type 38
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20211219154514.2165728-3-laurent@vivier.eu>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Use g_try_malloc instead of malloc to alocate the target ifconfig.
Also replace the corresponding free with g_free.
Signed-off-by: Ahmed Abouzied <email@aabouzied.com>
Message-Id: <20220104143841.25116-1-email@aabouzied.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Using do_sigprocmask directly was incorrect, as it will
leave the signal blocked by the outer layers of linux-user.
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20211221025012.1057923-8-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Do not cast the signal mask elements; trust __put_user.
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20211221025012.1057923-7-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
The real kernel will talk about the user PC as EA,
because that's where the hardware will have copied it,
and where it expects to put it to then use ERET.
But qemu does not emulate all of the exception stuff
while emulating user-only. Manipulate PC directly.
This fixes signal entry and return, and eliminates
some slight confusion from target_cpu_copy_regs.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20211221025012.1057923-6-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
The first word of page1 is data, so the whole thing
can't be implemented with emulation of addresses.
Use init_guest_commpage for the allocation.
Hijack trap number 16 to implement cmpxchg.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20211221025012.1057923-5-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Arm will no longer be the only target requiring a commpage,
but it will continue to be the only target placing the page
at the high end of the address space.
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20211221025012.1057923-4-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Do not confuse host and guest addresses. Lock and unlock
the target_rt_sigframe structure in setup_rt_sigframe.
Since rt_setup_ucontext always returns 0, drop the return
value entirely. This eliminates the only write to the err
variable in setup_rt_sigframe.
Always copy the siginfo structure.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20211221025012.1057923-3-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
The real kernel has to load the instruction and extract
the imm5 field; for qemu, modify the translator to do this.
The use of R_AT for this in cpu_loop was a bug. Handle
the other trap numbers as per the kernel's trap_table.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20211221025012.1057923-2-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
The possible variants for region type in /proc/self/maps are either
private "p" or shared "s". In the current implementation,
we mark shared regions as "-". It could break memory mapping parsers
such as included into ASan/HWASan sanitizers.
Fixes: 01ef6b9e4e ("linux-user: factor out reading of /proc/self/maps")
Signed-off-by: Andrey Kazmin <a.kazmin@partner.samsung.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Acked-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20211227125048.22610-1-a.kazmin@partner.samsung.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
There seems to be difference in syscall and libc definition of these
methods and therefore musl does not implement them (1e21e78bf7). Call
syscall directly to ensure the behavior of the libc of user application,
not the libc that was used to build QEMU.
Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>
Message-Id: <20220105041819.24160-3-tonistiigi@gmail.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
These syscalls are not exposed by glibc. The struct type need to be
redefined as it can't be included directly before
https://lkml.org/lkml/2020/5/28/810 .
sched_attr type can grow in future kernel versions. When client sends
values that QEMU does not understand it will return E2BIG with same
semantics as old kernel would so client can retry with smaller inputs.
Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>
Message-Id: <20220105041819.24160-2-tonistiigi@gmail.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
When converting a siginfo_t from waitid(), the interpretation of si_status
depends on the value of si_code: For CLD_EXITED, it is an exit code and
should be copied verbatim. For other codes, it is a signal number
(possibly with additional high bits from ptrace) that should be mapped.
This code was previously changed in commit 1c3dfb506e
("linux-user/signal: Decode waitid si_code"), but the fix was
incomplete.
Tested with the following test program:
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/wait.h>
int main() {
pid_t pid = fork();
if (pid == 0) {
exit(12);
} else {
siginfo_t siginfo = {};
waitid(P_PID, pid, &siginfo, WEXITED);
printf("Code: %d, status: %d\n", (int)siginfo.si_code, (int)siginfo.si_status);
}
pid = fork();
if (pid == 0) {
raise(SIGUSR2);
} else {
siginfo_t siginfo = {};
waitid(P_PID, pid, &siginfo, WEXITED);
printf("Code: %d, status: %d\n", (int)siginfo.si_code, (int)siginfo.si_status);
}
}
Output with an x86_64 host and mips64el target before 1c3dfb506e
(incorrect: exit code 12 is translated like a signal):
Code: 1, status: 17
Code: 2, status: 17
After 1c3dfb506e (incorrect: signal number is not translated):
Code: 1, status: 12
Code: 2, status: 12
With this patch:
Code: 1, status: 12
Code: 2, status: 17
Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <81534fde7cdfc6acea4889d886fbefdd606630fb.1635019124.git.mschiffer@universe-factory.net>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Leave TARGET_ALIGNED_ONLY set, but use the new CPUState
flag to set MO_UNALN for the instructions that the kernel
handles in the unaligned trap.
The Linux kernel does not handle all memory operations: no
floating-point and no MAC.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20211227150127.2659293-7-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Leave TARGET_ALIGNED_ONLY set, but use the new CPUState
flag to set MO_UNALN for the instructions that the kernel
handles in the unaligned trap.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20211227150127.2659293-6-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Leave TARGET_ALIGNED_ONLY set, but use the new CPUState
flag to set MO_UNALN for the instructions that the kernel
handles in the unaligned trap.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20211227150127.2659293-5-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
This requires extra work for each target, but adds the
common syscall code, and the necessary flag in CPUState.
Reviewed-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20211227150127.2659293-4-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Create a list of subcodes that we want to pass on, a list of
subcodes that should not be passed on because they would affect
the running qemu itself, and a list that probably could be
implemented but require extra work. Do not pass on unknown subcodes.
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20211227150127.2659293-3-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Since the prctl constants are supposed to be generic, supply
any that are not provided by the host.
Split out subroutines for PR_GET_FP_MODE, PR_SET_FP_MODE,
PR_GET_VL, PR_SET_VL, PR_RESET_KEYS, PR_SET_TAGGED_ADDR_CTRL,
PR_GET_TAGGED_ADDR_CTRL. Return EINVAL for guests that do
not support these options rather than pass them on to the host.
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20211227150127.2659293-2-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
TARGET_SIGSTKSZ is not used, we should remove it.
Signed-off-by: Song Gao <gaosong@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <1637893388-10282-4-git-send-email-gaosong@loongson.cn>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
TARGET_MINSIGSTKSZ has been defined in generic/signal.h
or target_signal.h, We don't need to define it again.
Signed-off-by: Song Gao <gaosong@loongson.cn>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <1637893388-10282-3-git-send-email-gaosong@loongson.cn>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
cpu_loop() never exits, so mark it with QEMU_NORETURN.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-By: Warner Losh <imp@bsdimp.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Warner Losh <imp@bsdimp.com>
Message-Id: <20211106113916.544587-1-f4bug@amsat.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Linux Hexagon port doesn't define a specific 'struct stat'
but uses the generic one (see Linux commit 6103ec56c65c [*]
"asm-generic: add generic ABI headers" which predates the
introduction of the Hexagon port).
Remove the target specific target_stat (which in fact is the
target_stat64 structure but uses incorrect target_long and
ABI unsafe long long types) and use the generic target_stat64
instead.
[*] https://github.com/torvalds/linux/commit/6103ec56c65c3#diff-5f59b07b38273b7d6a74193bc81a8cd18928c688276eae20cb10c569de3253ee
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Taylor Simpson <tsimpson@quicinc.com>
Tested-by: Taylor Simpson <tsimpson@quicinc.com>
Message-Id: <20211116210919.2823206-1-f4bug@amsat.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
When building using GCC 8.3.0 on loongarch64 (Loongnix) we get:
In file included from ../linux-user/signal.c:33:
../linux-user/host/loongarch64/host-signal.h: In function ‘host_signal_write’:
../linux-user/host/loongarch64/host-signal.h:57:9: error: a label can only be part of a statement and a declaration is not a statement
uint32_t sel = (insn >> 15) & 0b11111111111;
^~~~~~~~
We don't use the 'sel' variable more than once, so drop it.
Meson output for the record:
Host machine cpu family: loongarch64
Host machine cpu: loongarch64
C compiler for the host machine: cc (gcc 8.3.0 "cc (Loongnix 8.3.0-6.lnd.vec.27) 8.3.0")
C linker for the host machine: cc ld.bfd 2.31.1-system
Fixes: ad812c3bd6 ("linux-user: Implement CPU-specific signal handler for loongarch64 hosts")
Reported-by: Song Gao <gaosong@loongson.cn>
Suggested-by: Song Gao <gaosong@loongson.cn>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: WANG Xuerui <git@xen0n.name>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220104215027.2180972-1-f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: WANG Xuerui <git@xen0n.name>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20211221054105.178795-30-git@xen0n.name>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
