Remove lots and lots of unused headers.
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
When we changed decode_sleb128 from target_long to
int64_t, we failed to adjust the shift limit.
Cc: qemu-stable@nongnu.org
Fixes: c9ad8d27ca ("tcg: Widen gen_insn_data to uint64_t")
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Use the same value for all targets.
Rename TARGET_INSN_START_WORDS and do not depend on
TARGET_INSN_START_EXTRA_WORDS.
Remove TCGContext.insn_start_words.
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Move the global function name to a hook on TCGCPUOps.
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Combine 3 different pointer returns into one structure return.
Include a cflags field in TCGTBCPUState, not filled in by
cpu_get_tb_cpu_state, but used by all callers. This fills
a hole in the structure and is useful in some subroutines.
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
"exec/exec-all.h" is now fully empty, let's remove it.
Mechanical change running:
$ sed -i '/exec\/exec-all.h/d' $(git grep -wl exec/exec-all.h)
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Mark Cave-Ayland <mark.caveayland@nutanix.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-ID: <20250424202412.91612-14-philmd@linaro.org>
Most files including "exec/helper-proto.h" call GETPC().
Include it there (in the common part) instead of the
unspecific "exec/exec-all.h" header.
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-ID: <20250424202412.91612-10-philmd@linaro.org>
There's nothing left in internal-target.h that is
target specific.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Use TCGCPUOps::guest_default_memory_order to set TCGContext::guest_mo.
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
We only require the TCG_GUEST_DEFAULT_MO for MTTCG-enabled
frontends, otherwise we use a default value of TCG_MO_ALL.
In order to simplify, require the definition for all targets,
defining it for hexagon, m68k, rx, sh4 and tricore.
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Anton Johansson <anjo@rev.ng>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
tb_check_watchpoint() calls cpu_get_tb_cpu_state(),
which is declared in each "cpu.h" header. It is indirectly
included via "tcg/insn-start-words.h". Since we want to
rework "tcg/insn-start-words.h", removing "cpu.h" in the
next commit, add the missing header now, otherwise we'd
get:
accel/tcg/translate-all.c:598:9: error: call to undeclared function 'cpu_get_tb_cpu_state' [-Wimplicit-function-declaration]
598 | cpu_get_tb_cpu_state(env, &pc, &cs_base, &flags);
| ^
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
We prepare to remove cpu.h from cpu-all.h, which will transitively
remove it from accel/tcg/tb-internal.h, and thus from most of tcg
compilation units.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-ID: <20250325045915.994760-12-pierrick.bouvier@linaro.org>
The CPU_TLB_DYN_{MIN,MAX}_BITS definitions are not required
outside of cputlb.c and translate-all.c.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Split icount stuff from system/cpu-timers.h.
There are 17 files which only require icount.h, 7 that only
require cpu-timers.h, and 7 that require both.
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Convert the existing includes with sed.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Split out mmap_lock, et al from page-protection.h
to a new header.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
CpuState caches its CPUClass since commit 6fbdff8706
("cpu: cache CPUClass in CPUState for hot code paths"),
use it.
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20250122093028.52416-6-philmd@linaro.org>
The heavily imported "system/cpus.h" header includes "accel-ops.h"
to get AccelOpsClass type declaration. Reduce headers pressure by
forward declaring it in "qemu/typedefs.h", where we already
declare the AccelCPUState type.
Reduce "system/cpus.h" inclusions by only including
"system/accel-ops.h" when necessary.
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20250123234415.59850-14-philmd@linaro.org>
TCGCPUOps structure makes more sense in the accelerator context
rather than hardware emulation. Move it under the accel/tcg/ scope.
Mechanical change doing:
$ sed -i -e 's,hw/core/tcg-cpu-ops.h,accel/tcg/cpu-ops.h,g' \
$(git grep -l hw/core/tcg-cpu-ops.h)
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20250123234415.59850-11-philmd@linaro.org>
Currently one-insn TBs created from I/O memory are not added to
region_trees. Therefore, when they generate exceptions, they are not
handled by cpu_restore_state_from_tb().
For x86 this is not a problem, because x86_restore_state_to_opc() only
restores pc and cc, which already have the correct values if the first
TB instruction causes an exception. However, on several other
architectures, restore_state_to_opc() is not stricly limited to state
restoration and affects some exception-related registers, where guests
can notice incorrect values, for example:
- arm's exception.syndrome;
- hppa's unwind_breg;
- riscv's excp_uw2;
- s390x's int_pgm_ilen.
Fix by always calling tcg_tb_insert(). This may increase the size of
region_trees, but tcg_region_reset_all() clears it once code_gen_buffer
fills up, so it will not grow uncontrollably.
Do not call tb_link_page(), which would add such TBs to the QHT, to
prevent tb_lookup() from finding them. These TBs are single-use, since
subsequent reads from I/O memory may return different values; they are
not removed from code_gen_buffer only in order to keep things simple.
Co-developed-by: Nina Schoetterl-Glausch <nsg@linux.ibm.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-ID: <20250116213214.5695-2-iii@linux.ibm.com>
While it would be technically correct to allow an IRQ to happen (as
the offending instruction never really completed) it messes up
instrumentation. We already take care to only use memory
instrumentation on the block, we should also suppress IRQs.
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Reviewed-by: Julian Ganz <neither@nut.email>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20250116160306.1709518-23-alex.bennee@linaro.org>
Convert all targets simultaneously, as the gen_intermediate_code
function disappears from the target. While there are possible
workarounds, they're larger than simply performing the conversion.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Move declarations related to TranslationBlock out of the
generic "internal-target.h" to "tb-internal.h".
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20241212185341.2857-11-philmd@linaro.org>
"exec/translate-all.h" is only useful to TCG accelerator,
so move it to accel/tcg/, after renaming it 'tb-internal.h'.
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20241212185341.2857-9-philmd@linaro.org>
Move mmap_lock(), mmap_unlock() declarations and the
WITH_MMAP_LOCK_GUARD() definition to 'exec/page-protection.h'.
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20241212185341.2857-5-philmd@linaro.org>
Headers in include/sysemu/ are not only related to system
*emulation*, they are also used by virtualization. Rename
as system/ which is clearer.
Files renamed manually then mechanical change using sed tool.
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Tested-by: Lei Yang <leiyang@redhat.com>
Message-Id: <20241203172445.28576-1-philmd@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20240428221450.26460-4-philmd@linaro.org>
Using log_pc produces the pc at the beginning of TB,
not the actual pc installed by cpu_restore_state_from_tb,
which could be any of the guest instructions within TB.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Move qemu_host_page_{size,mask} and HOST_PAGE_ALIGN into bsd-user.
It should be removed from bsd-user as well, but defer that cleanup.
Reviewed-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Tested-by: Ilya Leoshkevich <iii@linux.ibm.com>
Acked-by: Helge Deller <deller@gmx.de>
Message-Id: <20240102015808.132373-28-richard.henderson@linaro.org>
tcg/ should not depend on accel/tcg/, but perf and debuginfo
support provided by the latter are being used by tcg/tcg.c.
Since that's the only user, move both to tcg/.
Suggested-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-ID: <20231212003837.64090-5-iii@linux.ibm.com>
Message-Id: <20240125054631.78867-5-philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
The Big QEMU Lock (BQL) has many names and they are confusing. The
actual QemuMutex variable is called qemu_global_mutex but it's commonly
referred to as the BQL in discussions and some code comments. The
locking APIs, however, are called qemu_mutex_lock_iothread() and
qemu_mutex_unlock_iothread().
The "iothread" name is historic and comes from when the main thread was
split into into KVM vcpu threads and the "iothread" (now called the main
loop thread). I have contributed to the confusion myself by introducing
a separate --object iothread, a separate concept unrelated to the BQL.
The "iothread" name is no longer appropriate for the BQL. Rename the
locking APIs to:
- void bql_lock(void)
- void bql_unlock(void)
- bool bql_locked(void)
There are more APIs with "iothread" in their names. Subsequent patches
will rename them. There are also comments and documentation that will be
updated in later patches.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Paul Durrant <paul@xen.org>
Acked-by: Fabiano Rosas <farosas@suse.de>
Acked-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Acked-by: Peter Xu <peterx@redhat.com>
Acked-by: Eric Farman <farman@linux.ibm.com>
Reviewed-by: Harsh Prateek Bora <harshpb@linux.ibm.com>
Acked-by: Hyman Huang <yong.huang@smartx.com>
Reviewed-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Message-id: 20240102153529.486531-2-stefanha@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
In cpu_exec_step_atomic, we did not set CF_LAST_IO, which lead
to a loop with cpu_io_recompile.
But since 18a536f1f8 ("Always require can_do_io") we no longer
need a flag to indicate when the last insn should have can_do_io set,
so remove the flag entirely.
Reported-by: Clément Chigot <chigot@adacore.com>
Tested-by: Clément Chigot <chigot@adacore.com>
Reviewed-by: Claudio Fontana <cfontana@suse.de>
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1961
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Factor the TCG specific code from cpu_common_reset_hold() to
tcg_cpu_reset_hold() within tcg-accel-ops.c. Since this file
is sysemu specific, we can inline tcg_flush_softmmu_tlb(),
removing its declaration in "exec/cpu-common.h".
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Anton Johansson <anjo@rev.ng>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20230918104153.24433-4-philmd@linaro.org>
Move all of it into accel/tcg/monitor.c. This puts everything
about tcg that is only used by the monitor in the same place.
Tested-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Move target-agnostic declarations from "internal-target.h"
to a new "internal-common.h" header.
monitor.c now don't include target specific headers and can
be compiled once in system_ss[].
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Anton Johansson <anjo@rev.ng>
Message-Id: <20230914185718.76241-10-philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
accel/tcg/internal.h contains target specific declarations.
Unit files including it become "target tainted": they can not
be compiled as target agnostic. Rename using the '-target'
suffix to make this explicit.
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Anton Johansson <anjo@rev.ng>
Message-Id: <20230914185718.76241-9-philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Now that there is no padding between CPUNegativeOffsetState
and CPUArchState, this value is constant across all targets.
Reviewed-by: Anton Johansson <anjo@rev.ng>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Now that CPUNegativeOffsetState is part of CPUState,
we can reference it directly.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Retain the separate structure to emphasize its importance.
Enforce CPUArchState always follows CPUState without padding.
Reviewed-by: Anton Johansson <anjo@rev.ng>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
On overflow of code_gen_buffer, we unlock the guest pages we had been
translating, but failed to clear gen_tb. On restart, if we cannot
allocate a TB, we exit to the main loop to perform the flush of all
TBs as soon as possible. With garbage in gen_tb, we hit an assert:
../src/accel/tcg/tb-maint.c:348:page_unlock__debug: \
assertion failed: (page_is_locked(pd))
Fixes: deba78709a ("accel/tcg: Always lock pages before translation")
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
In commit f0a08b0913 we changed the type of the PC from
target_ulong to vaddr. In doing so we inadvertently dropped the
zero-padding on the PC in trace lines (the second item inside the []
in these lines). They used to look like this on AArch64, for
instance:
Trace 0: 0x7f2260000100 [00000000/0000000040000000/00000061/ff200000]
and now they look like this:
Trace 0: 0x7f4f50000100 [00000000/40000000/00000061/ff200000]
and if the PC happens to be somewhere low like 0x5000
then the field is shown as /5000/.
This is because TARGET_FMT_lx is a "%08x" or "%016x" specifier,
depending on TARGET_LONG_SIZE, whereas VADDR_PRIx is just PRIx64
with no width specifier.
Restore the zero-padding by adding an 016 width specifier to
this tracing and a couple of others that were similarly recently
changed to use VADDR_PRIx without a width specifier.
We can't unfortunately restore the "32-bit guests are padded to
8 hex digits and 64-bit guests to 16 hex digits" behaviour so
easily.
Fixes: f0a08b0913 ("accel/tcg/cpu-exec.c: Widen pc to vaddr")
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Anton Johansson <anjo@rev.ng>
Message-id: 20230711165434.4123674-1-peter.maydell@linaro.org
We had done this for user-mode by invoking page_protect
within the translator loop. Extend this to handle system
mode as well. Move page locking out of tb_link_page.
Reported-by: Liren Wei <lrwei@bupt.edu.cn>
Reported-by: Richard W.M. Jones <rjones@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Tested-by: Richard W.M. Jones <rjones@redhat.com>
TBStats will be introduced to replace CONFIG_PROFILER totally, here
remove all CONFIG_PROFILER related stuffs first.
Signed-off-by: Vanderson M. do Rosario <vandersonmr2@gmail.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Fei Wu <fei2.wu@intel.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20230607122411.3394702-2-fei2.wu@intel.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Anton Johansson <anjo@rev.ng>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20230621135633.1649-4-anjo@rev.ng>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Anton Johansson <anjo@rev.ng>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20230621135633.1649-3-anjo@rev.ng>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
