Merge tag 'misc-next-20231128' of https://github.com/philmd/qemu into staging

Misc fixes for 8.2

* buildsys: Invoke bash via 'env' (Samuel)

* doc: Fix example in s390-cpu-topology.rst (Zhao)

* HW

Merge tag 'misc-next-20231128' of https://github.com/philmd/qemu into staging

Misc fixes for 8.2

* buildsys: Invoke bash via 'env' (Samuel)

* doc: Fix example in s390-cpu-topology.rst (Zhao)

* HW: Fix AVR ATMega reset stack (Gihun) and VT82C686 IRQ routing (Zoltan)

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# gpg: using RSA key FAABE75E12917221DCFD6BB2E3E32C2CDEADC0DE
# gpg: Good signature from "Philippe Mathieu-Daudé (F4BUG) <f4bug@amsat.org>" [full]
# Primary key fingerprint: FAAB E75E 1291 7221 DCFD 6BB2 E3E3 2C2C DEAD C0DE

* tag 'misc-next-20231128' of https://github.com/philmd/qemu:
docs/s390: Fix wrong command example in s390-cpu-topology.rst
hw/avr/atmega: Fix wrong initial value of stack pointer
hw/audio/via-ac97: Route interrupts using via_isa_set_irq()
hw/isa/vt82c686: Route PIRQ inputs using via_isa_set_irq()
hw/usb/vt82c686-uhci-pci: Use ISA instead of PCI interrupts
hw/isa/vt82c686: Bring back via_isa_set_irq()
target/hexagon/idef-parser/prepare: use env to invoke bash

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

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target/hexagon/idef-parser/prepare: use env to invoke bash

This file is the only one involved in the compilation process which
still uses the /bin/bash path.

Signed-off-by: Samuel Tardieu <sam@rfc1

target/hexagon/idef-parser/prepare: use env to invoke bash

This file is the only one involved in the compilation process which
still uses the /bin/bash path.

Signed-off-by: Samuel Tardieu <sam@rfc1149.net>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Anton Johansson <anjo@rev.ng>
Message-ID: <20231123211506.636533-1-sam@rfc1149.net>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>

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Merge tag 'pull-hex-20221216-1' of https://github.com/quic/qemu into staging

1)
Performance improvement
Add pkt and insn to DisasContext
Many functions need information from all 3 structures, so mer

Merge tag 'pull-hex-20221216-1' of https://github.com/quic/qemu into staging

1)
Performance improvement
Add pkt and insn to DisasContext
Many functions need information from all 3 structures, so merge
them together.

2)
Bug fix
Fix predicated assignment to .tmp and .cur

3)
Performance improvement
Add overrides for S2_asr_r_r_sat/S2_asl_r_r_sat
These functions will not be handled by idef-parser

4-11)
The final 8 patches improve change-of-flow handling.

Currently, we set the PC to a new address before exiting a TB. The
ultimate goal is to use direct block chaining. However, several steps
are needed along the way.

4)
When a packet has more than one change-of-flow (COF) instruction, only
the first one taken is considered. The runtime bookkeeping is only
needed when there is more than one COF instruction in a packet.

5, 6)
Remove PC and next_PC from the runtime state and always use a
translation-time constant. Note that next_PC is used by call instructions
to set LR and by conditional COF instructions to set the fall-through
address.

7, 8, 9)
Add helper overrides for COF instructions. In particular, we must
distinguish those that use a PC-relative address for the destination.
These are candidates for direct block chaining later.

10)
Use direct block chaining for packets that have a single PC-relative
COF instruction. Instead of generating the code while processing the
instruction, we record the effect in DisasContext and generate the code
during gen_end_tb.

11)
Use direct block chaining for tight loops. We look for TBs that end
with an endloop0 that will branch back to the TB start address.

12-21)
Instruction definition parser (idef-parser) from rev.ng
Parses the instruction semantics and generates TCG

# gpg: Signature made Fri 16 Dec 2022 20:41:53 GMT
# gpg: using RSA key 3635C788CE62B91FD4C59AB47B0244FB12DE4422
# gpg: Good signature from "Taylor Simpson (Rock on) <tsimpson@quicinc.com>" [undefined]
# 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: 3635 C788 CE62 B91F D4C5 9AB4 7B02 44FB 12DE 4422

* tag 'pull-hex-20221216-1' of https://github.com/quic/qemu: (21 commits)
target/hexagon: import additional tests
target/hexagon: call idef-parser functions
target/hexagon: import parser for idef-parser
target/hexagon: import lexer for idef-parser
target/hexagon: prepare input for the idef-parser
target/hexagon: introduce new helper functions
target/hexagon: make helper functions non-static
target/hexagon: make slot number an unsigned
target/hexagon: import README for idef-parser
target/hexagon: update MAINTAINERS for idef-parser
Hexagon (target/hexagon) Use direct block chaining for tight loops
Hexagon (target/hexagon) Use direct block chaining for direct jump/branch
Hexagon (target/hexagon) Add overrides for various forms of jump
Hexagon (target/hexagon) Add overrides for compound compare and jump
Hexagon (target/hexagon) Add overrides for direct call instructions
Hexagon (target/hexagon) Remove next_PC from runtime state
Hexagon (target/hexagon) Remove PC from the runtime state
Hexagon (target/hexagon) Only use branch_taken when packet has multi cof
Hexagon (target/hexagon) Add overrides for S2_asr_r_r_sat/S2_asl_r_r_sat
Hexagon (target/hexagon) Fix predicated assignment to .tmp and .cur
...

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

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target/hexagon: prepare input for the idef-parser

Introduce infrastructure necessary to produce a file suitable for being
parsed by the idef-parser. A build option is also added to fully disable
the

target/hexagon: prepare input for the idef-parser

Introduce infrastructure necessary to produce a file suitable for being
parsed by the idef-parser. A build option is also added to fully disable
the output of idef-parser, which is useful for debugging.

Signed-off-by: Alessandro Di Federico <ale@rev.ng>
Signed-off-by: Anton Johansson <anjo@rev.ng>
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Reviewed-by: Taylor Simpson <tsimpson@quicinc.com>
Message-Id: <20220923173831.227551-8-anjo@rev.ng>

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