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112 Commits
Author SHA1 Message Date
Gustavo RomeroandAlex Bennée 4d6d8a05a0 linux-user: Move tswap_siginfo out of target code 
Move tswap_siginfo from target code to handle_pending_signal. This will
allow some cleanups and having the siginfo ready to be used in gdbstub.

Signed-off-by: Gustavo Romero <gustavo.romero@linaro.org>
Suggested-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20240309030901.1726211-3-gustavo.romero@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
 2024-03-13 11:43:52 +00:00
Ilya LeoshkevichandAlex Bennée e4e5cb4a54 {linux,bsd}-user: Introduce get_task_state() 
A CPU's TaskState is stored in the CPUState's void *opaque field,
accessing which is somewhat awkward due to having to use a cast.
Introduce a wrapper and use it everywhere.

Suggested-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reviewed-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20240219141628.246823-3-iii@linux.ibm.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20240305121005.3528075-4-alex.bennee@linaro.org>
 2024-03-06 12:35:19 +00:00
Richard HendersonandPeter Maydell 681dfc0d55 linux-user/aarch64: Choose SYNC as the preferred MTE mode 
The API does not generate an error for setting ASYNC | SYNC; that merely
constrains the selection vs the per-cpu default.  For qemu linux-user,
choose SYNC as the default.

Cc: qemu-stable@nongnu.org
Reported-by: Gustavo Romero <gustavo.romero@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Tested-by: Gustavo Romero <gustavo.romero@linaro.org>
Message-id: 20240207025210.8837-2-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
 2024-02-15 11:30:44 +00:00
Richard Henderson 6400be014f linux-user/aarch64: Add padding before __kernel_rt_sigreturn 
Without this padding, an unwind through the signal handler
will pick up the unwind info for the preceding syscall.

This fixes gcc's 30_threads/thread/native_handle/cancel.cc.

Cc: qemu-stable@nongnu.org
Fixes: ee95fae075 ("linux-user/aarch64: Add vdso")
Resolves: https://linaro.atlassian.net/browse/GNU-974
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20240202034427.504686-1-richard.henderson@linaro.org>
 2024-02-03 16:46:10 +10:00
Stefan Hajnoczi 516fffc993 Merge tag 'pull-lu-20231030' of https://gitlab.com/rth7680/qemu into staging 
linux-user: Fix guest signal remapping after adjusting SIGABRT
linux-user: Implement VDSOs

* tag 'pull-lu-20231030' of https://gitlab.com/rth7680/qemu: (21 commits)
  build: Add update-linux-vdso makefile rule
  linux-user: Show vdso address in /proc/pid/maps
  linux-user/s390x: Add vdso
  linux-user/s390x: Rename __SIGNAL_FRAMESIZE to STACK_FRAME_OVERHEAD
  linux-user/ppc: Add vdso
  linux-user/loongarch64: Add vdso
  linux-user/riscv: Add vdso
  linux-user/hppa: Add vdso
  linux-user/arm: Add vdso
  linux-user/aarch64: Add vdso
  linux-user/x86_64: Add vdso
  linux-user/i386: Add vdso
  linux-user: Add gen-vdso tool
  linux-user: Load vdso image if available
  linux-user: Replace bprm->fd with bprm->src.fd
  linux-user: Use ImageSource in load_symbols
  linux-user: Use ImageSource in load_elf_image
  linux-user: Do not clobber bprm_buf swapping ehdr
  linux-user: Tidy loader_exec
  linux-user: Introduce imgsrc_read, imgsrc_read_alloc
  ...

Conflicts:
  linux-user/arm/signal.c
  Fix an #include context conflict.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
 2023-10-31 07:12:40 +09:00
Richard Henderson ee95fae075 linux-user/aarch64: Add vdso 
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
 2023-10-30 13:41:55 -07:00
Peter Maydell 5a534314a8 target/arm: Move feature test functions to their own header 
The feature test functions isar_feature_*() now take up nearly
a thousand lines in target/arm/cpu.h. This header file is included
by a lot of source files, most of which don't need these functions.
Move the feature test functions to their own header file.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20231024163510.2972081-2-peter.maydell@linaro.org
 2023-10-27 11:44:32 +01:00
Helge DellerandRichard Henderson a55b9e7226 linux-user: Emulate /proc/cpuinfo on aarch64 and arm 
Add emulation for /proc/cpuinfo for arm architecture.
The output below mimics output as seen on debian porterboxes.

aarch64 output example:

processor       : 0
model name      : ARMv8 Processor rev 0 (v8l)
BogoMIPS        : 100.00
Features        : swp half thumb fast_mult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae aes pmull sha1 sha2 crc32
CPU implementer : 0x41
CPU architecture: 8
CPU variant     : 0x1
CPU part        : 0xd07
CPU revision    : 0

arm 32-bit output example:

processor	: 0
model name	: ARMv7 Processor rev 5 (armv7l)
BogoMIPS	: 100.00
Features	: swp half thumb fast_mult vfp edsp thumbee neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae
CPU implementer	: 0x41
CPU architecture: 7
CPU variant	: 0x0f
CPU part	: 0xc07
CPU revision	: 5

Signed-off-by: Helge Deller <deller@gmx.de>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20230803214450.647040-3-deller@gmx.de>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
 2023-09-01 13:33:36 -07:00
Richard Henderson 121c8dd69d linux-user: Split out cpu/target_proc.h 
Move the various open_cpuinfo functions into new files.
Move the m68k open_hardware function as well.
All other guest architectures get a boilerplate empty file.

Tested-by: Helge Deller <deller@gmx.de>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
 2023-09-01 13:33:09 -07:00
Richard Henderson da2b71fab6 linux-user: Define ELF_ET_DYN_BASE in $guest/target_mman.h 
Copy each guest kernel's default value, then bound it
against reserved_va or the host address space.

Tested-by: Helge Deller <deller@gmx.de>
Reviewed-by: Helge Deller <deller@gmx.de>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
 2023-08-08 13:27:15 -07:00
Richard Henderson 2d708164e0 linux-user: Define TASK_UNMAPPED_BASE in $guest/target_mman.h 
Provide default values that are as close as possible to the
values used by the guest's kernel.

Tested-by: Helge Deller <deller@gmx.de>
Reviewed-by: Helge Deller <deller@gmx.de>
Reviewed-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
 2023-08-08 13:24:27 -07:00
Richard Henderson 6edfca9eae linux-user: Split TARGET_PROT_* out of syscall_defs.h 
Move the values into the per-target target_mman.h headers

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20230707204054.8792-8-richard.henderson@linaro.org>
 2023-07-15 08:02:32 +01:00
Mike FrysingerandLaurent Vivier 95fc5ed4a8 linux-user: move target_flat.h to target subdirs 
This makes target_flat.h behave like every other target_xxx.h header.
It also makes it actually work -- while the current header says adding
a header to the target subdir overrides the common one, it doesn't.
This is for two reasons:
* meson.build adds -Ilinux-user before -Ilinux-user/$arch
* the compiler search path for "target_flat.h" looks in the same dir
  as the source file before searching -I paths.

This can be seen with the xtensa port -- the subdir settings aren't
used which breaks stack setup.

Move it to the generic/ subdir and add include stubs like every
other target_xxx.h header is handled.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20230129004625.11228-1-vapier@gentoo.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
 2023-02-03 22:55:12 +01:00
Richard HendersonandPeter Maydell f431855714 target/arm/sme: Rebuild hflags in aarch64_set_svcr() 
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Fabiano Rosas <farosas@suse.de>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-id: 20230112102436.1913-7-philmd@linaro.org
Message-Id: <20230112004322.161330-1-richard.henderson@linaro.org>
[PMD: Split patch in multiple tiny steps]
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
 2023-01-23 13:32:38 +00:00
Richard HendersonandPeter Maydell 7f2a01e736 target/arm/sme: Reset SVE state in aarch64_set_svcr() 
Move arm_reset_sve_state() calls to aarch64_set_svcr().

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Fabiano Rosas <farosas@suse.de>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-id: 20230112102436.1913-5-philmd@linaro.org
Message-Id: <20230112004322.161330-1-richard.henderson@linaro.org>
[PMD: Split patch in multiple tiny steps]
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
 2023-01-23 13:32:38 +00:00
Richard HendersonandPeter Maydell 2a8af38259 target/arm/sme: Introduce aarch64_set_svcr() 
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Fabiano Rosas <farosas@suse.de>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-id: 20230112102436.1913-4-philmd@linaro.org
Message-Id: <20230112004322.161330-1-richard.henderson@linaro.org>
[PMD: Split patch in multiple tiny steps]
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
 2023-01-23 13:32:38 +00:00
Ilya LeoshkevichandLaurent Vivier 9f22020b91 linux-user: Provide MADV_* definitions 
Provide MADV_* definitions using target_mman.h header, similar to what
kernel does. Most architectures use the same values, with the exception
of alpha and hppa.

Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220906000839.1672934-2-iii@linux.ibm.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
 2022-09-27 09:30:09 +02:00
Richard HendersonandPeter Maydell 24d87c187c linux-user/aarch64: Implement PR_SME_GET_VL, PR_SME_SET_VL 
These prctl set the Streaming SVE vector length, which may
be completely different from the Normal SVE vector length.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220708151540.18136-43-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
 2022-07-11 13:43:52 +01:00
Richard HendersonandPeter Maydell fd72f5d0ba linux-user: Rename sve prctls 
Add "sve" to the sve prctl functions, to distinguish
them from the coming "sme" prctls with similar names.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220708151540.18136-42-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
 2022-07-11 13:43:52 +01:00
Richard HendersonandPeter Maydell 78fd56ba13 linux-user/aarch64: Implement SME signal handling 
Set the SM bit in the SVE record on signal delivery, create the ZA record.
Restore SM and ZA state according to the records present on return.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220708151540.18136-41-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
 2022-07-11 13:43:52 +01:00
Richard HendersonandPeter Maydell d3b4f7170f linux-user/aarch64: Move sve record checks into restore 
Move the checks out of the parsing loop and into the
restore function.  This more closely mirrors the code
structure in the kernel, and is slightly clearer.

Reject rather than silently skip incorrect VL and SVE record sizes,
bringing our checks in to line with those the kernel does.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220708151540.18136-40-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
 2022-07-11 13:43:51 +01:00
Richard HendersonandPeter Maydell 8e5e19ee41 linux-user/aarch64: Verify extra record lock succeeded 
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220708151540.18136-39-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
 2022-07-11 13:43:51 +01:00
Richard HendersonandPeter Maydell affb1a50b9 linux-user/aarch64: Do not allow duplicate or short sve records 
In parse_user_sigframe, the kernel rejects duplicate sve records,
or records that are smaller than the header.  We were silently
allowing these cases to pass, dropping the record.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220708151540.18136-38-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
 2022-07-11 13:43:51 +01:00
Richard HendersonandPeter Maydell 5726597c3b linux-user/aarch64: Tidy target_restore_sigframe error return 
Fold the return value setting into the goto, so each
point of failure need not do both.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220708151540.18136-37-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
 2022-07-11 13:43:51 +01:00
Richard HendersonandPeter Maydell 4a29c36316 linux-user/aarch64: Add SM bit to SVE signal context 
Make sure to zero the currently reserved fields.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220708151540.18136-36-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
 2022-07-11 13:43:51 +01:00