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2699 Commits
Author SHA1 Message Date
Richard HendersonandDavid Gibson 6086c751c3 target/ppc: Replace POWERPC_EXCP_BRANCH with DISAS_NORETURN 
The translation of branch instructions always results in exit from
the TB. Remove the synthetic "exception" after no more uses.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Matheus Ferst <matheus.ferst@eldorado.org.br>
Message-Id: <20210517205025.3777947-4-matheus.ferst@eldorado.org.br>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
 2021-05-19 10:30:29 +10:00
Richard HendersonandDavid Gibson d736de8ff6 target/ppc: Replace POWERPC_EXCP_STOP with DISAS_EXIT_UPDATE 
Remove the synthetic "exception" after no more uses.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Matheus Ferst <matheus.ferst@eldorado.org.br>
Message-Id: <20210517205025.3777947-3-matheus.ferst@eldorado.org.br>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
 2021-05-19 10:30:29 +10:00
Ilya LeoshkevichandLaurent Vivier 4a1e8931ec linux-user/elfload: add s390x core dumping support 
Provide the following definitions required by the common code:

* ELF_NREG: with the value of sizeof(s390_regs) / sizeof(long).
* target_elf_gregset_t: define it like all the other arches do.
* elf_core_copy_regs(): similar to kernel's s390_regs_get().
* USE_ELF_CORE_DUMP.
* ELF_EXEC_PAGESIZE.

Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Message-Id: <20210413205608.22587-1-iii@linux.ibm.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
 2021-05-18 07:10:46 +02:00
Ilya LeoshkevichandLaurent Vivier 5f779a3a26 linux-user/elfload: fix filling psinfo->pr_psargs 
The current code dumps the memory between arg_start and arg_end,
which contains the argv pointers. This results in the

    Core was generated by `<garbage>`

message when opening the core file in GDB. This is because the code is
supposed to dump the actual arg strings. Fix by using arg_strings and
env_strings instead of arg_start and arg_end.

Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Message-Id: <20210413205814.22821-1-iii@linux.ibm.com>
[lv: add missing braces]
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
 2021-05-18 07:10:46 +02:00
Richard HendersonandLaurent Vivier fb80439b1e linux-user: Tidy TARGET_NR_rt_sigaction 
Initialize variables instead of elses.
Use an else instead of a goto.
Add braces.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20210422230227.314751-8-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
 2021-05-18 07:10:46 +02:00
Richard HendersonandLaurent Vivier 02d0de101c linux-user/alpha: Share code for TARGET_NR_sigaction 
There's no longer a difference between the alpha code and
the generic code.

There is a type difference in target_old_sigaction.sa_flags,
which can be resolved with a very much smaller ifdef, which
allows us to finish sharing the target_sigaction definition.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20210422230227.314751-7-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
 2021-05-18 07:10:46 +02:00
Richard HendersonandLaurent Vivier 0f6f99032e linux-user/alpha: Define TARGET_ARCH_HAS_KA_RESTORER 
This means that we can share the TARGET_NR_rt_sigaction code,
and the target_rt_sigaction structure is unused.  Untangling
the ifdefs so that target_sigaction can be shared will wait
until the next patch.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20210422230227.314751-6-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
 2021-05-18 07:10:45 +02:00
Richard HendersonandLaurent Vivier ca192277db linux-user: Honor TARGET_ARCH_HAS_SA_RESTORER in do_syscall 
Do not access a field that may not be present.  This will
become an issue when sharing more code in the next patch.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20210422230227.314751-5-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
 2021-05-18 07:10:45 +02:00
Richard HendersonandLaurent Vivier 02fb28e8ef linux-user: Pass ka_restorer to do_sigaction 
The value of ka_restorer needs to be saved in sigact_table.
At the moment, the attempt to save it in do_syscall is
improperly clobbering user memory.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20210422230227.314751-4-richard.henderson@linaro.org>
[lv: remove tab]
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
 2021-05-18 07:10:32 +02:00
Richard HendersonandLaurent Vivier f20a9ca6d0 linux-user/alpha: Rename the sigaction restorer field 
Use ka_restorer, in line with TARGET_ARCH_HAS_KA_RESTORER
vs TARGET_ARCH_HAS_SA_RESTORER, since Alpha passes this
field as a syscall argument.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20210422230227.314751-3-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
 2021-05-18 07:09:58 +02:00
Richard HendersonandLaurent Vivier 8f5141a9e1 linux-user/alpha: Fix rt sigframe return 
We incorrectly used the offset of the non-rt sigframe.

Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20210422230227.314751-2-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
 2021-05-18 07:09:58 +02:00
Daniel P. BerrangéandLaurent Vivier 68af19ad72 linux-user: use GDateTime for formatting timestamp for core file 
The GDateTime APIs provided by GLib avoid portability pitfalls, such
as some platforms where 'struct timeval.tv_sec' field is still 'long'
instead of 'time_t'. When combined with automatic cleanup, GDateTime
often results in simpler code too.

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20210505103702.521457-7-berrange@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
 2021-05-18 07:09:58 +02:00
Giuseppe MusacchioandLaurent Vivier 0fa259dd79 linux-user: Fix erroneous conversion in copy_file_range 
The implicit cast from abi_long to size_t may introduce an intermediate
unwanted sign-extension of the value for 32bit targets running on 64bit
hosts.

Signed-off-by: Giuseppe Musacchio <thatlemon@gmail.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20210503174159.54302-3-thatlemon@gmail.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
 2021-05-18 07:09:58 +02:00
Giuseppe MusacchioandLaurent Vivier db3221454d linux-user: Add copy_file_range to strace.list 
Signed-off-by: Giuseppe Musacchio <thatlemon@gmail.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20210503174159.54302-2-thatlemon@gmail.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
 2021-05-18 07:09:58 +02:00
Richard HendersonandLaurent Vivier 0b16f04c1f linux-user/s390x: Handle vector regs in signal stack 
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Message-Id: <20210428193408.233706-16-richard.henderson@linaro.org>
[lv: fix indentation]
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
 2021-05-18 07:09:36 +02:00
Richard HendersonandLaurent Vivier 79d6f2baa4 linux-user/s390x: Clean up signal.c 
Reorder the function bodies to correspond to the kernel source.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Message-Id: <20210428193408.233706-15-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
 2021-05-15 21:44:38 +02:00
Richard HendersonandLaurent Vivier 9e0fb648b2 linux-user/s390x: Add build asserts for sigset sizes 
At point of usage, it's not immediately obvious that
we don't need a loop to copy these arrays.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Message-Id: <20210428193408.233706-14-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
 2021-05-15 21:44:38 +02:00
Richard HendersonandLaurent Vivier ac1a92ec8f linux-user/s390x: Fix frame_addr corruption in setup_frame 
The original value of frame_addr is still required for
its use in the call to unlock_user_struct below.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Message-Id: <20210428193408.233706-13-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
 2021-05-15 21:44:38 +02:00
Richard HendersonandLaurent Vivier 6c18757dc5 linux-user/s390x: Add stub sigframe argument for last_break 
In order to properly present these arguments, we need to add
code to target/s390x to record LowCore parameters for user-only.

But in the meantime, at least zero the missing last_break
argument, and fixup the comment style in the vicinity.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Message-Id: <20210428193408.233706-12-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
 2021-05-15 21:44:38 +02:00
Richard HendersonandLaurent Vivier 7e5355578e linux-user/s390x: Set psw.mask properly for the signal handler 
Note that PSW_ADDR_{64,32} are called PSW_MASK_{EA,BA}
in the kernel source.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Message-Id: <20210428193408.233706-11-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
 2021-05-15 21:44:38 +02:00
Richard HendersonandLaurent Vivier 2080734880 linux-user/s390x: Clean up single-use gotos in signal.c 
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Message-Id: <20210428193408.233706-10-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
 2021-05-15 21:44:38 +02:00
Richard HendersonandLaurent Vivier 82839490e4 linux-user/s390x: Tidy save_sigregs 
The "save" routines copied from the kernel, which are currently
commented out, are unnecessary in qemu.  We can copy from env
where the kernel needs special instructions.  Fix comment style.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Message-Id: <20210428193408.233706-9-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
 2021-05-15 21:44:38 +02:00
Richard HendersonandLaurent Vivier bb17fc5b47 linux-user/s390x: Use tswap_sigset in setup_rt_frame 
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Message-Id: <20210428193408.233706-8-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
 2021-05-15 21:44:38 +02:00
Richard HendersonandLaurent Vivier 4e4a08200b linux-user/s390x: Fix sigcontext sregs value 
Using the host address of &frame->sregs is incorrect.
We need the guest address.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Message-Id: <20210428193408.233706-7-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
 2021-05-15 21:44:38 +02:00
Richard HendersonandLaurent Vivier bd45be9f5f linux-user/s390x: Fix trace in restore_regs 
Directly reading sc->regs.psw.addr misses the bswap
that may be performed by __get_user.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Message-Id: <20210428193408.233706-6-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
 2021-05-15 21:44:38 +02:00