tests/avocado/machine_aspeed.py: Add an I2C slave test

The Aspeed 2600 I2C controller supports a slave mode which can be
tested with the I2C echo device. Test extracted from :

  https://lists.nongnu.org/archive/html/qemu-devel/2022-06/msg00183.html

Suggested-by: Klaus Jensen <k.jensen@samsung.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Cédric Le Goater <clg@kaod.org>

hw/misc: add a toy i2c echo device

Add an example I2C device to demonstrate how a slave may master the bus
and send data asynchronously to another slave.

The device will echo whatever it is sent to the device identified by the
first byte received.

Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
[ clg: integrated fixes :
  https://lore.kernel.org/qemu-devel/Y3yMKAhOkYGtnkOp@cormorant.local/ ]
Message-Id: <20220601210831.67259-7-its@irrelevant.dk>
Signed-off-by: Cédric Le Goater <clg@kaod.org>

hw/i2c: only schedule pending master when bus is idle

It is not given that the current master will release the bus after a
transfer ends. Only schedule a pending master if the bus is idle.

Fixes: 37fa5ca42623 ("hw/i2c: support multiple masters")
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
Acked-by: Corey Minyard <cminyard@mvista.com>
Message-Id: <20221116084312.35808-2-its@irrelevant.dk>
Signed-off-by: Cédric Le Goater <clg@kaod.org>

readline: fix hmp completion issue

The auto completion does not work in some cases.

Case 1.

1. (qemu) info reg
2. Press 'Tab'.
3. It does not auto complete.

Case 2.

1. (qemu) block_resize flo
2. Press 'Tab'.
3. It does not auto complete 'floppy0'.

Since the readline_add_completion_of() may add any completion when
strlen(pfx) is zero, we remove the check with (name[0] == '\0') because
strlen() always returns zero in that case.

Fixes: 52f50b1e9f8f ("readline: Extract readline_add_completion_of() from monitor")
Cc: Joe Jin <joe.jin@oracle.com>
Signed-off-by: Dongli Zhang <dongli.zhang@oracle.com>
Tested-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Cédric Le Goater <clg@kaod.org>

Merge tag 'pull-tcg-20230301' of https://gitlab.com/rth7680/qemu into staging

helper-head: Add fpu/softfloat-types.h
softmmu: Use memmove in flatview_write_continue
tcg: Add sign param to probe_access_flags, probe_access_full
tcg: Convert TARGET_TB_PCREL to CF_PCREL
tcg: Simplify temporary lifetimes for translators

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* tag 'pull-tcg-20230301' of https://gitlab.com/rth7680/qemu: (62 commits)
  tcg: Update docs/devel/tcg-ops.rst for temporary changes
  tcg: Remove tcg_temp_local_new_*, tcg_const_local_*
  exec/gen-icount: Don't use tcg_temp_local_new_i32
  target/xtensa: Don't use tcg_temp_local_new_*
  target/ppc: Don't use tcg_temp_local_new
  target/mips: Don't use tcg_temp_local_new
  target/i386: Don't use tcg_temp_local_new
  target/hppa: Don't use tcg_temp_local_new
  target/hexagon/idef-parser: Drop gen_tmp_local
  target/hexagon: Don't use tcg_temp_local_new_*
  target/cris: Don't use tcg_temp_local_new
  target/arm: Don't use tcg_temp_local_new_*
  target/arm: Drop copies in gen_sve_{ldr,str}
  tcg: Change default temp lifetime to TEMP_TB
  tcg: Don't re-use TEMP_TB temporaries
  accel/tcg/plugin: Tidy plugin_gen_disable_mem_helpers
  accel/tcg/plugin: Use tcg_temp_ebb_*
  tcg: Use tcg_constant_ptr in do_dup
  tcg: Use tcg_temp_ebb_new_* in tcg/
  tcg: Add tcg_temp_ebb_new_{i32,i64,ptr}
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

tcg: Update docs/devel/tcg-ops.rst for temporary changes

Rewrite the sections which talked about 'local temporaries'.
Remove some assumptions which no longer hold.

Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

tcg: Remove tcg_temp_local_new_*, tcg_const_local_*

These symbols are now unused.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

exec/gen-icount: Don't use tcg_temp_local_new_i32

Since tcg_temp_new_i32 is now identical, use that.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/xtensa: Don't use tcg_temp_local_new_*

Since tcg_temp_new_* is now identical, use those.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/ppc: Don't use tcg_temp_local_new

Since tcg_temp_new is now identical, use that.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/mips: Don't use tcg_temp_local_new

Since tcg_temp_new is now identical, use that.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/i386: Don't use tcg_temp_local_new

Since tcg_temp_new is now identical, use that.
In some cases we can avoid a copy from A0 or T0.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/hppa: Don't use tcg_temp_local_new

This wasn't actually used at all, just some unused
macro re-definitions.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/hexagon/idef-parser: Drop gen_tmp_local

This is now equivalent to gen_tmp.

Reviewed-by: Taylor Simpson <tsimpson@quicinc.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/hexagon: Don't use tcg_temp_local_new_*

Since tcg_temp_new_* is now identical, use those.

Reviewed-by: Taylor Simpson <tsimpson@quicinc.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/cris: Don't use tcg_temp_local_new

Since tcg_temp_new is now identical, use that.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/arm: Don't use tcg_temp_local_new_*

Since tcg_temp_new_* is now identical, use those.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/arm: Drop copies in gen_sve_{ldr,str}

Since we now get TEMP_TB temporaries by default, we no longer
need to make copies across these loops.  These were the only
uses of new_tmp_a64_local(), so remove that as well.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

tcg: Change default temp lifetime to TEMP_TB

Guest front-ends now get temps that span the lifetime of
the translation block by default, which avoids accidentally
using the temp across branches and invalidating the data.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

tcg: Don't re-use TEMP_TB temporaries

Reusing TEMP_TB interferes with detecting whether the
temp can be adjusted to TEMP_EBB.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

accel/tcg/plugin: Tidy plugin_gen_disable_mem_helpers

Here we are creating a temp whose value needs to be replaced,
but always storing NULL into CPUState.plugin_mem_cbs.
Use tcg_constant_ptr(0) explicitly.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

accel/tcg/plugin: Use tcg_temp_ebb_*

All of these uses have quite local scope.
Avoid tcg_const_*, because we haven't added a corresponding
interface for TEMP_EBB.  Use explicit tcg_gen_movi_* instead.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

tcg: Use tcg_constant_ptr in do_dup

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

tcg: Use tcg_temp_ebb_new_* in tcg/

All of these have obvious and quite local scope.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

tcg: Add tcg_temp_ebb_new_{i32,i64,ptr}

TCG internals will want to be able to allocate and reuse
explicitly life-limited temporaries.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

tcg: Add tcg_gen_movi_ptr

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

tcg: Use tcg_constant_i32 in tcg_gen_io_start

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

tcg: Pass TCGTempKind to tcg_temp_new_internal

While the argument can only be TEMP_EBB or TEMP_TB,
it's more obvious this way.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

tcg: Remove TEMP_NORMAL

TEMP_NORMAL is a subset of TEMP_EBB.  Promote single basic
block temps to single extended basic block.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

tcg: Add liveness_pass_0

Attempt to reduce the lifetime of TEMP_TB.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

tcg: Use noinline for major tcg_gen_code subroutines

This makes it easier to assign blame with perf.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

tcg: Rename TEMP_LOCAL to TEMP_TB

Use TEMP_TB as that is more explicit about the default
lifetime of the data.  While "global" and "local" used
to be contrasting, we have more lifetimes than that now.

Do not yet rename tcg_temp_local_new_*, just the enum.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

tcg: Remove branch-to-next regardless of reference count

Just because the label reference count is more than 1 does
not mean we cannot remove a branch-to-next.  By doing this
first, the label reference count may drop to 0, and then
the label itself gets removed as before.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

accel/tcg: Use more accurate max_insns for tb_overflow

Write back the number of insns that we attempt to translate,
so that if we longjmp out we have a more accurate limit for
the next attempt.  This results in fewer restarts when some
limit is consumed by few instructions.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

accel/tcg: Pass max_insn to gen_intermediate_code by pointer

In preparation for returning the number of insns generated
via the same pointer.  Adjust only the prototypes so far.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

tcg: Adjust TCGContext.temps_in_use check

Change the temps_in_use check to use assert not fprintf.
Move the assert for double-free before the check for count,
since that is the more immediate problem.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

include/exec: Remove `tb_pc()`

Signed-off-by: Anton Johansson <anjo@rev.ng>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230227135202.9710-28-anjo@rev.ng>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/arm: Replace `tb_pc()` with `tb->pc`

Signed-off-by: Anton Johansson <anjo@rev.ng>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230227135202.9710-27-anjo@rev.ng>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/avr: Replace `tb_pc()` with `tb->pc`

Signed-off-by: Anton Johansson <anjo@rev.ng>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230227135202.9710-26-anjo@rev.ng>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/hexagon: Replace `tb_pc()` with `tb->pc`

Signed-off-by: Anton Johansson <anjo@rev.ng>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Taylor Simpson <tsimpson@quicinc.com>
Message-Id: <20230227135202.9710-25-anjo@rev.ng>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/hppa: Replace `tb_pc()` with `tb->pc`

Signed-off-by: Anton Johansson <anjo@rev.ng>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230227135202.9710-24-anjo@rev.ng>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/i386: Replace `tb_pc()` with `tb->pc`

Signed-off-by: Anton Johansson <anjo@rev.ng>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230227135202.9710-23-anjo@rev.ng>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/loongarch: Replace `tb_pc()` with `tb->pc`

Signed-off-by: Anton Johansson <anjo@rev.ng>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230227135202.9710-22-anjo@rev.ng>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/microblaze: Replace `tb_pc()` with `tb->pc`

Signed-off-by: Anton Johansson <anjo@rev.ng>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230227135202.9710-21-anjo@rev.ng>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/mips: Replace `tb_pc()` with `tb->pc`

Signed-off-by: Anton Johansson <anjo@rev.ng>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230227135202.9710-20-anjo@rev.ng>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/openrisc: Replace `tb_pc()` with `tb->pc`

Signed-off-by: Anton Johansson <anjo@rev.ng>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230227135202.9710-19-anjo@rev.ng>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/riscv: Replace `tb_pc()` with `tb->pc`

Signed-off-by: Anton Johansson <anjo@rev.ng>
Reviewed-by: Palmer Dabbelt <palmer@rivosinc.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230227135202.9710-18-anjo@rev.ng>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/rx: Replace `tb_pc()` with `tb->pc`

Signed-off-by: Anton Johansson <anjo@rev.ng>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230227135202.9710-17-anjo@rev.ng>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/sh4: Replace `tb_pc()` with `tb->pc`

Signed-off-by: Anton Johansson <anjo@rev.ng>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230227135202.9710-16-anjo@rev.ng>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/sparc: Replace `tb_pc()` with `tb->pc`

Signed-off-by: Anton Johansson <anjo@rev.ng>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230227135202.9710-15-anjo@rev.ng>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/tricore: Replace `tb_pc()` with `tb->pc`

Signed-off-by: Anton Johansson <anjo@rev.ng>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230227135202.9710-14-anjo@rev.ng>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

accel/tcg: Replace `tb_pc()` with `tb->pc`

Signed-off-by: Anton Johansson <anjo@rev.ng>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230227135202.9710-13-anjo@rev.ng>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

accel/tcg: Move jmp-cache `CF_PCREL` checks to caller

tb-jmp-cache.h contains a few small functions that only exist to hide a
CF_PCREL check, however the caller often already performs such a check.

This patch moves CF_PCREL checks from the callee to the caller, and also
removes these functions which now only hide an access of the jmp-cache.

Signed-off-by: Anton Johansson <anjo@rev.ng>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230227135202.9710-12-anjo@rev.ng>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/i386: Remove `TARGET_TB_PCREL` define

Signed-off-by: Anton Johansson <anjo@rev.ng>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230227135202.9710-11-anjo@rev.ng>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/arm: Remove `TARGET_TB_PCREL` define

Signed-off-by: Anton Johansson <anjo@rev.ng>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230227135202.9710-10-anjo@rev.ng>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

include/exec: Remove `TARGET_TB_PCREL` define

Signed-off-by: Anton Johansson <anjo@rev.ng>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230227135202.9710-9-anjo@rev.ng>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/i386: Replace `TARGET_TB_PCREL` with `CF_PCREL`

Signed-off-by: Anton Johansson <anjo@rev.ng>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230227135202.9710-8-anjo@rev.ng>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/arm: Replace `TARGET_TB_PCREL` with `CF_PCREL`

Signed-off-by: Anton Johansson <anjo@rev.ng>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230227135202.9710-7-anjo@rev.ng>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

include/exec: Replace `TARGET_TB_PCREL` with `CF_PCREL`

Signed-off-by: Anton Johansson <anjo@rev.ng>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230227135202.9710-6-anjo@rev.ng>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

accel/tcg: Replace `TARGET_TB_PCREL` with `CF_PCREL`

Signed-off-by: Anton Johansson <anjo@rev.ng>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230227135202.9710-5-anjo@rev.ng>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/arm: set `CF_PCREL` in `arm_cpu_realizefn`

Signed-off-by: Anton Johansson <anjo@rev.ng>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230227135202.9710-4-anjo@rev.ng>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/i386: set `CF_PCREL` in `x86_cpu_realizefn`

Signed-off-by: Anton Johansson <anjo@rev.ng>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230227135202.9710-3-anjo@rev.ng>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

include/exec: Introduce `CF_PCREL`

Adds a new field to TranslationBlock.cflags denoting whether or not the
instructions of a given translation block are pc-relative. This field
aims to replace the macro `TARGET_TB_PCREL`.

Signed-off-by: Anton Johansson <anjo@rev.ng>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230227135202.9710-2-anjo@rev.ng>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

accel/tcg: Add 'size' param to probe_access_full

Change to match the recent change to probe_access_flags.
All existing callers updated to supply 0, so no change in behaviour.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

accel/tcg: Add 'size' param to probe_access_flags()

probe_access_flags() as it is today uses probe_access_full(), which in
turn uses probe_access_internal() with size = 0. probe_access_internal()
then uses the size to call the tlb_fill() callback for the given CPU.
This size param ('fault_size' as probe_access_internal() calls it) is
ignored by most existing .tlb_fill callback implementations, e.g.
arm_cpu_tlb_fill(), ppc_cpu_tlb_fill(), x86_cpu_tlb_fill() and
mips_cpu_tlb_fill() to name a few.

But RISC-V riscv_cpu_tlb_fill() actually uses it. The 'size' parameter
is used to check for PMP (Physical Memory Protection) access. This is
necessary because PMP does not make any guarantees about all the bytes
of the same page having the same permissions, i.e. the same page can
have different PMP properties, so we're forced to make sub-page range
checks. To allow RISC-V emulation to do a probe_acess_flags() that
covers PMP, we need to either add a 'size' param to the existing
probe_acess_flags() or create a new interface (e.g.
probe_access_range_flags).

There are quite a few probe_* APIs already, so let's add a 'size' param
to probe_access_flags() and re-use this API. This is done by open coding
what probe_access_full() does inside probe_acess_flags() and passing the
'size' param to probe_acess_internal(). Existing probe_access_flags()
callers use size = 0 to not change their current API usage. 'size' is
asserted to enforce single page access like probe_access() already does.

No behavioral changes intended.

Signed-off-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Message-Id: <20230223234427.521114-2-dbarboza@ventanamicro.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

softmmu: Use memmove in flatview_write_continue

We found a case where the source passed to flatview_write_continue() may
overlap with the destination when fuzzing igb, a new proposed network
device with sanitizers.

igb uses pci_dma_map() to get Tx packet, and pci_dma_write() to write Rx
buffer. While pci_dma_write() is usually used to write data from
memory not mapped to the guest, if igb is configured to perform
loopback, the data will be sourced from the guest memory. The source and
destination can overlap and the usage of memcpy() will be invalid in
such a case.

While we do not really have to deal with such an invalid request for
igb, detecting the overlap in igb code beforehand requires complex code,
and only covers this specific case. Instead, just replace memcpy() with
memmove() to tolerate overlaps. Using memmove() will slightly damage the
performance as it will need to check overlaps before using SIMD
instructions for copying, but the cost should be negligible, considering
the inherent complexity of flatview_write_continue().

The test cases generated by the fuzzer is available at:
https://patchew.org/QEMU/20230129053316.1071513-1-alxndr@bu.edu/

The fixed test case is:
fuzz/crash_47dfe62d9f911bf523ff48cd441b61c0013ed805

Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Acked-by: Alexander Bulekov <alxndr@bu.edu>
Acked-by: David Hildenbrand <david@redhat.com>
Message-Id: <20230131030155.18932-1-akihiko.odaki@daynix.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

exec/helper-head: Include missing "fpu/softfloat-types.h" header

'dh_ctype_f32' is defined as 'float32', itself declared
in "fpu/softfloat-types.h". Include this header to avoid
when refactoring other headers:

  In file included from include/exec/helper-proto.h:7,
                   from include/tcg/tcg-op.h:29,
                   from ../../tcg/tcg-op-vec.c:22:
  include/exec/helper-head.h:44:22: error: unknown type name ‘float32’; did you mean ‘_Float32’?
     44 | #define dh_ctype_f32 float32
        |                      ^~~~~~~

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20221216225202.25664-1-philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

Merge tag 'buildsys-qom-qdev-ui-20230227' of https://github.com/philmd/qemu into staging

- buildsys
  - Various header cleaned up (removing pointless headers)
  - Mark various files/code user/system specific
  - Make various objects target-independent
  - Remove tswapN() calls from dump.o
  - Suggest g_assert_not_reached() instead of assert(0)

- qdev / qom
  - Replace various container_of() by QOM cast macros
  - Declare some QOM macros using OBJECT_DECLARE_TYPE()
  - Embed OHCI QOM child in SM501 chipset

- hw (ISA & IDE)
  - add some documentation, improve function names
  - un-inline, open-code few functions
  - have ISA API accessing IRQ/DMA prefer ISABus over ISADevice
  - Demote IDE subsystem maintenance to "Odd Fixes"

- ui: Improve Ctrl+Alt hint on Darwin Cocoa

# -----BEGIN PGP SIGNATURE-----
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# =AV/+
# -----END PGP SIGNATURE-----
# gpg: Signature made Mon 27 Feb 2023 21:34:24 GMT
# gpg:                using RSA key FAABE75E12917221DCFD6BB2E3E32C2CDEADC0DE
# gpg: Good signature from "Philippe Mathieu-Daudé (F4BUG) <f4bug@amsat.org>" [unknown]
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg:          There is no indication that the signature belongs to the owner.
# Primary key fingerprint: FAAB E75E 1291 7221 DCFD  6BB2 E3E3 2C2C DEAD C0DE

* tag 'buildsys-qom-qdev-ui-20230227' of https://github.com/philmd/qemu: (125 commits)
  ui/cocoa: user friendly characters for release mouse
  dump: Add create_win_dump() stub for non-x86 targets
  dump: Simplify compiling win_dump.o by introducing win_dump_available()
  dump: Clean included headers
  dump: Replace TARGET_PAGE_SIZE -> qemu_target_page_size()
  dump: Replace tswapN() -> cpu_to_dumpN()
  hw/ide/pci: Add PCIIDEState::isa_irq[]
  hw/ide/via: Replace magic 2 value by ARRAY_SIZE / MAX_IDE_DEVS
  hw/ide/piix: Refactor pci_piix_init_ports as pci_piix_init_bus per bus
  hw/ide/piix: Pass Error* to pci_piix_init_ports() for better error msg
  hw/ide/piix: Remove unused includes
  hw/ide/pci: Unexport bmdma_active_if()
  hw/ide/ioport: Remove unnecessary includes
  hw/ide: Declare ide_get_[geometry/bios_chs_trans] in 'hw/ide/internal.h'
  hw/ide: Rename idebus_active_if() -> ide_bus_active_if()
  hw/ide: Rename ide_init2() -> ide_bus_init_output_irq()
  hw/ide: Rename ide_exec_cmd() -> ide_bus_exec_cmd()
  hw/ide: Rename ide_register_restart_cb -> ide_bus_register_restart_cb
  hw/ide: Rename ide_create_drive() -> ide_bus_create_drive()
  hw/ide: Rename ide_set_irq() -> ide_bus_set_irq()
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

ui/cocoa: user friendly characters for release mouse

While mouse is grabbed, window title contains a hint for the user what
keyboard keys to press to release the mouse. Make that hint text a bit
more user friendly for a Mac user:

 - Replace "Ctrl" and "Alt" by appropriate symbols for those keyboard
   keys typically displayed for them on a Mac (encode those symbols by
   using UTF-8 characters).

 - Drop " + " in between the keys, as that's not common on macOS for
   documenting keyboard shortcuts.

 - Convert lower case "g" to upper case "G", as that's common on macOS.

 - Add one additional space at start and end of key stroke set, to
   visually separate the key strokes from the rest of the text.

Signed-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
Tested-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <E1pAClj-0003Jo-OB@lizzy.crudebyte.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>

dump: Add create_win_dump() stub for non-x86 targets

Implement the non-x86 create_win_dump(). We can remove
the last TARGET_X86_64 #ifdef'ry in dump.c, which thus
becomes target-independent. Update meson accordingly.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20230225094903.53167-6-philmd@linaro.org>

dump: Simplify compiling win_dump.o by introducing win_dump_available()

To make dump.c less target dependent, move the TARGET_X86_64 #ifdef'ry
from dump.c to win_dump.c (introducing a win_dump_available() method
there). By doing so we can build win_dump.c on any target, and
simplify the meson rule.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20230225094903.53167-5-philmd@linaro.org>

dump: Clean included headers

"qemu/win_dump_defs.h" is only required by win_dump.c,
but win_dump.h requires "sysemu/dump.h" which declares
the DumpState type. Remove various unused headers.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20230225094903.53167-4-philmd@linaro.org>

dump: Replace TARGET_PAGE_SIZE -> qemu_target_page_size()

TARGET_PAGE_SIZE is target specific. In preparation of
making dump.c target-agnostic, replace the compile-time
TARGET_PAGE_SIZE definition by runtime qemu_target_page_size().

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20230225094903.53167-3-philmd@linaro.org>

dump: Replace tswapN() -> cpu_to_dumpN()

All uses of tswap in that file are wrong, and should be using
cpu_to_dumpN, which correctly tests the endianness of the output.

Reported-by: Richard Henderson <richard.henderson@linaro.org>
Suggested-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20230225094903.53167-2-philmd@linaro.org>

hw/ide/pci: Add PCIIDEState::isa_irq[]

These legacy ISA IRQs allow the PIIX IDE functions to be wired up in
their south bridges and the VIA IDE functions to disuse
PCI_INTERRUPT_LINE as outlined in https://lists.nongnu.org/archive/html/qemu-devel/2020-03/msg01707.html

Suggested-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: Bernhard Beschow <shentey@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230126211740.66874-7-shentey@gmail.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>

hw/ide/via: Replace magic 2 value by ARRAY_SIZE / MAX_IDE_DEVS

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Acked-by: John Snow <jsnow@redhat.com>
Message-Id: <20210511041848.2743312-5-f4bug@amsat.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>

hw/ide/piix: Refactor pci_piix_init_ports as pci_piix_init_bus per bus

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230215112712.23110-21-philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

hw/ide/piix: Pass Error* to pci_piix_init_ports() for better error msg

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230215112712.23110-20-philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

hw/ide/piix: Remove unused includes

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230215112712.23110-19-philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

hw/ide/pci: Unexport bmdma_active_if()

The function is only used inside ide/pci.c, so doesn't need to be exported.

Signed-off-by: Bernhard Beschow <shentey@gmail.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230215112712.23110-18-philmd@linaro.org>

hw/ide/ioport: Remove unnecessary includes

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230215112712.23110-17-philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

hw/ide: Declare ide_get_[geometry/bios_chs_trans] in 'hw/ide/internal.h'

ide_get_geometry() and ide_get_bios_chs_trans() are only
used by the TYPE_PC_MACHINE.
"hw/ide.h" is a mixed bag of lost IDE declarations. In order
to remove this (almost) pointless header soon, move these
declarations to "hw/ide/internal.h".

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20230220091358.17038-18-philmd@linaro.org>

hw/ide: Rename idebus_active_if() -> ide_bus_active_if()

idebus_active_if() operates on a IDEBus; rename it as
ide_bus_active_if() to emphasize its first argument
is a IDEBus.

Mechanical change using:

  $ sed -i -e 's/idebus_active_if/ide_bus_active_if/g' \
        $(git grep -l idebus_active_if)

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230215112712.23110-16-philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

hw/ide: Rename ide_init2() -> ide_bus_init_output_irq()

ide_init2() initializes a IDEBus, and set its output IRQ.
To emphasize this, rename it as ide_bus_init_output_irq().

Mechanical change using:

  $ sed -i -e 's/ide_init2/ide_bus_init_output_irq/g' \
        $(git grep -l ide_init2)

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230215112712.23110-15-philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

hw/ide: Rename ide_exec_cmd() -> ide_bus_exec_cmd()

ide_exec_cmd() operates on a IDEBus; rename it as
ide_bus_exec_cmd() to emphasize its first argument
is a IDEBus.

Mechanical change using:

  $ sed -i -e 's/ide_exec_cmd/ide_bus_exec_cmd/g' \
        $(git grep -wl ide_exec_cmd)

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230215112712.23110-14-philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

hw/ide: Rename ide_register_restart_cb -> ide_bus_register_restart_cb

ide_register_restart_cb() operates on a IDEBus; rename it as
ide_bus_register_restart_cb() to emphasize its first argument
is a IDEBus.

Mechanical change using:

  $ sed -i -e 's/ide_register_restart_cb/ide_bus_register_restart_cb/g' \
    $(git grep -l ide_register_restart_cb)

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230215112712.23110-13-philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

hw/ide: Rename ide_create_drive() -> ide_bus_create_drive()

ide_create_drive() operates on a IDEBus; rename it as
ide_bus_create_drive() to emphasize its first argument
is a IDEBus.

Mechanical change using:

  $ sed -i -e 's/ide_create_drive/ide_bus_create_drive/g' \
        $(git grep -wl ide_create_drive)

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230215112712.23110-12-philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

hw/ide: Rename ide_set_irq() -> ide_bus_set_irq()

ide_set_irq() operates on a IDEBus; rename it as
ide_bus_set_irq() to emphasize its first argument
is a IDEBus.

Mechanical change using:

  $ sed -i -e 's/ide_set_irq/ide_bus_set_irq/g' \
        $(git grep -l ide_set_irq)

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230215112712.23110-11-philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

hw/ide: Un-inline ide_set_irq()

Only include "hw/irq.h" where appropriate.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230215112712.23110-10-philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

hw/ide: Include 'exec/ioport.h' instead of 'hw/isa/isa.h'

The IDEBus structure has PortioList fields, so we need its
declarations from "exec/ioport.h". "hw/isa/isa.h" is not required.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230215112712.23110-9-philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>

hw/ide: Remove unused 'qapi/qapi-types-run-state.h'

Missed in commit d7458e7754 ("hw/ide/internal: Remove unused
DMARestartFunc typedef") which removed the single use of RunState.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230215112712.23110-8-philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>

hw/ide/atapi: Restrict 'scsi/constants.h' inclusion

Only atapi.c requires the SCSI constants. No need to include
it in all files including "hw/ide/internal.h".

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230215112712.23110-7-philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>

hw/ide/isa: Remove intermediate ISAIDEState::irq variable

The intermediate ISAIDEState::irq variable just add noise, remove it.

Message-Id: <20230215112712.23110-6-philmd@linaro.org>
Reviewed-by: Bernhard Beschow <shentey@gmail.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>

hw/ide/isa: Extract TYPE_ISA_IDE declarations to 'hw/ide/isa.h'

"hw/ide.h" is a mixed bag of lost IDE declarations.

Extract isa_ide_init() and the TYPE_ISA_IDE QOM declarations
to a new "hw/ide/isa.h" header.

Rename ISAIDEState::isairq as 'irqnum' to emphasize this is
not a qemu_irq object but the number (index) of an ISA IRQ.

Message-Id: <20230215112712.23110-5-philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Bernhard Beschow <shentey@gmail.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>

hw/ide/mmio: Extract TYPE_MMIO_IDE declarations to 'hw/ide/mmio.h'

"hw/ide.h" is a mixed bag of lost IDE declarations.

Extract mmio_ide_init_drives() and the TYPE_MMIO_IDE QOM
declarations to a new "hw/ide/mmio.h" header.

Document the SysBus interface.

Message-Id: <20230215112712.23110-4-philmd@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>

hw/ide/mmio: Use CamelCase for MMIO_IDE state name

Following docs/devel/style.rst guidelines, rename MMIOIDEState
as IdeMmioState.

Having the structure name and its typedef named equally,
we can manually convert from the old DECLARE_INSTANCE_CHECKER()
macro to the more recent OBJECT_DECLARE_SIMPLE_TYPE().

Note, due to that name mismatch, this macro wasn't automatically
converted during commit 8063396bf3 ("Use OBJECT_DECLARE_SIMPLE_TYPE
when possible").

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20230220091358.17038-3-philmd@linaro.org>

hw/ide/ahci: Trace ncq write command as write instead of read

Fixes: e4baa9f00b ("AHCI: Replace DPRINTF with trace-events")
Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: John Snow <jsnow@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20230217103130.42077-1-f.ebner@proxmox.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>

hw/i386/xen: Remove unused 'hw/ide.h' include from header

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Acked-by: Paul Durrant <paul@xen.org>
Message-Id: <20230220092707.22584-1-philmd@linaro.org>

MAINTAINERS: Mark IDE and Floppy as "Odd Fixes"

I have not been able to give these devices the love they need for a
while now. Update the maintainers file to reflect the truth of the
matter.

Signed-off-by: John Snow <jsnow@redhat.com>
Message-Id: <20230206182544.711117-1-jsnow@redhat.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>

scripts/checkpatch.pl: Do not allow assert(0)

Since commit 262a69f428 ("osdep.h: Prohibit disabling assert()
in supported builds") we can not build QEMU with NDEBUG (or
G_DISABLE_ASSERT) defined, thus 'assert(0)' always aborts QEMU.

However some static analyzers / compilers doesn't notice NDEBUG
can't be defined and emit warnings if code is used after an
'assert(0)' call.

Apparently such compiler isn't as clever with G_DISABLE_ASSERT,
so we can silent these warnings by using g_assert_not_reached()
which is easier to read anyway.

In order to avoid these annoying warnings, add a checkpatch rule
to prohibit 'assert(0)'. Suggest using g_assert_not_reached()
instead. For example when reverting the previous patch we get:

  ERROR: use g_assert_not_reached() instead of assert(0)
  #21: FILE: target/ppc/dfp_helper.c:124:
  +            assert(0); /* cannot get here */

  ERROR: use g_assert_not_reached() instead of assert(0)
  #30: FILE: target/ppc/dfp_helper.c:141:
  +            assert(0); /* cannot get here */

  total: 2 errors, 0 warnings, 16 lines checked

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20230221232520.14480-3-philmd@linaro.org>