Commit graph

14181 commits

Author SHA1 Message Date
Richard Henderson
873f9ca385 Accelerator patches
- Extract page-protection definitions to page-protection.h
 - Rework in accel/tcg in preparation of extracting TCG fields from CPUState
 - More uses of get_task_state() in user emulation
 - Xen refactors in preparation for adding multiple map caches (Juergen & Edgar)
 - MAINTAINERS updates (Aleksandar and Bin)
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCAAdFiEE+qvnXhKRciHc/Wuy4+MsLN6twN4FAmY40CAACgkQ4+MsLN6t
 wN5drxAA1oIsuUzpAJmlMIxZwlzbICiuexgn/HH9DwWNlrarKo7V1l4YB8jd9WOg
 IKuj7c39kJKsDEB8BXApYwcly+l7DYdnAAI8Z7a+eN+ffKNl/0XBaLjsGf58RNwY
 fb39/cXWI9ZxKxsHMSyjpiu68gOGvZ5JJqa30Fr+eOGuug9Fn/fOe1zC6l/dMagy
 Dnym72stpD+hcsN5sVwohTBIk+7g9og1O/ctRx6Q3ZCOPz4p0+JNf8VUu43/reaR
 294yRK++JrSMhOVFRzP+FH1G25NxiOrVCFXZsUTYU+qPDtdiKtjH1keI/sk7rwZ7
 U573lesl7ewQFf1PvMdaVf0TrQyOe6kUGr9Mn2k8+KgjYRAjTAQk8V4Ric/+xXSU
 0rd7Cz7lyQ8jm0DoOElROv+lTDQs4dvm3BopF3Bojo4xHLHd3SFhROVPG4tvGQ3H
 72Q5UPR2Jr2QZKiImvPceUOg0z5XxoN6KRUkSEpMFOiTRkbwnrH59z/qPijUpe6v
 8l5IlI9GjwkL7pcRensp1VC6e9KC7F5Od1J/2RLDw3UQllMQXqVw2bxD3CEtDRJL
 QSZoS4d1jUCW4iAYdqh/8+2cOIPiCJ4ai5u7lSdjrIJkRErm32FV/pQLZauoHlT5
 eTPUgzDoRXVgI1X1slTpVXlEEvRNbhZqSkYLkXr80MLn5hTafo0=
 =3Qkg
 -----END PGP SIGNATURE-----

Merge tag 'accel-20240506' of https://github.com/philmd/qemu into staging

Accelerator patches

- Extract page-protection definitions to page-protection.h
- Rework in accel/tcg in preparation of extracting TCG fields from CPUState
- More uses of get_task_state() in user emulation
- Xen refactors in preparation for adding multiple map caches (Juergen & Edgar)
- MAINTAINERS updates (Aleksandar and Bin)

# -----BEGIN PGP SIGNATURE-----
#
# iQIzBAABCAAdFiEE+qvnXhKRciHc/Wuy4+MsLN6twN4FAmY40CAACgkQ4+MsLN6t
# wN5drxAA1oIsuUzpAJmlMIxZwlzbICiuexgn/HH9DwWNlrarKo7V1l4YB8jd9WOg
# IKuj7c39kJKsDEB8BXApYwcly+l7DYdnAAI8Z7a+eN+ffKNl/0XBaLjsGf58RNwY
# fb39/cXWI9ZxKxsHMSyjpiu68gOGvZ5JJqa30Fr+eOGuug9Fn/fOe1zC6l/dMagy
# Dnym72stpD+hcsN5sVwohTBIk+7g9og1O/ctRx6Q3ZCOPz4p0+JNf8VUu43/reaR
# 294yRK++JrSMhOVFRzP+FH1G25NxiOrVCFXZsUTYU+qPDtdiKtjH1keI/sk7rwZ7
# U573lesl7ewQFf1PvMdaVf0TrQyOe6kUGr9Mn2k8+KgjYRAjTAQk8V4Ric/+xXSU
# 0rd7Cz7lyQ8jm0DoOElROv+lTDQs4dvm3BopF3Bojo4xHLHd3SFhROVPG4tvGQ3H
# 72Q5UPR2Jr2QZKiImvPceUOg0z5XxoN6KRUkSEpMFOiTRkbwnrH59z/qPijUpe6v
# 8l5IlI9GjwkL7pcRensp1VC6e9KC7F5Od1J/2RLDw3UQllMQXqVw2bxD3CEtDRJL
# QSZoS4d1jUCW4iAYdqh/8+2cOIPiCJ4ai5u7lSdjrIJkRErm32FV/pQLZauoHlT5
# eTPUgzDoRXVgI1X1slTpVXlEEvRNbhZqSkYLkXr80MLn5hTafo0=
# =3Qkg
# -----END PGP SIGNATURE-----
# gpg: Signature made Mon 06 May 2024 05:42:08 AM PDT
# gpg:                using RSA key FAABE75E12917221DCFD6BB2E3E32C2CDEADC0DE
# gpg: Good signature from "Philippe Mathieu-Daudé (F4BUG) <f4bug@amsat.org>" [full]

* tag 'accel-20240506' of https://github.com/philmd/qemu: (28 commits)
  MAINTAINERS: Update my email address
  MAINTAINERS: Update Aleksandar Rikalo email
  system: Pass RAM MemoryRegion and is_write in xen_map_cache()
  xen: mapcache: Break out xen_map_cache_init_single()
  xen: mapcache: Break out xen_invalidate_map_cache_single()
  xen: mapcache: Refactor xen_invalidate_map_cache_entry_unlocked
  xen: mapcache: Refactor xen_replace_cache_entry_unlocked
  xen: mapcache: Break out xen_ram_addr_from_mapcache_single
  xen: mapcache: Refactor xen_remap_bucket for multi-instance
  xen: mapcache: Refactor xen_map_cache for multi-instance
  xen: mapcache: Refactor lock functions for multi-instance
  xen: let xen_ram_addr_from_mapcache() return -1 in case of not found entry
  system: let qemu_map_ram_ptr() use qemu_ram_ptr_length()
  user: Use get_task_state() helper
  user: Declare get_task_state() once in 'accel/tcg/vcpu-state.h'
  user: Forward declare TaskState type definition
  accel/tcg: Move @plugin_mem_cbs from CPUState to CPUNegativeOffsetState
  accel/tcg: Restrict cpu_plugin_mem_cbs_enabled() to TCG
  accel/tcg: Restrict qemu_plugin_vcpu_exit_hook() to TCG plugins
  accel/tcg: Update CPUNegativeOffsetState::can_do_io field documentation
  ...

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-05-06 10:19:10 -07:00
Richard Henderson
d4c453f648 * target/i386: Introduce SapphireRapids-v3 to add missing features
* switch boards to "default y"
 * allow building emulators without any board
 * configs: list "implied" device groups in the default configs
 * remove unnecessary declarations from typedefs.h
 * target/i386: Give IRQs a chance when resetting HF_INHIBIT_IRQ_MASK
 -----BEGIN PGP SIGNATURE-----
 
 iQFIBAABCAAyFiEE8TM4V0tmI4mGbHaCv/vSX3jHroMFAmY1ILsUHHBib256aW5p
 QHJlZGhhdC5jb20ACgkQv/vSX3jHroNtIwf+MEehq2HudZvsK1M8FrvNmkB/AssO
 x4tqL8DlTus23mQDBu9+rANTB93ManJdK9ybtf6NfjEwK+R8RJslLVnuy/qT+aQX
 PD208L88fjZg17G8uyawwvD1VmqWzHFSN14ShmKzqB2yPXXo/1cJ30w78DbD50yC
 6rw/xbC5j195CwE2u8eBcIyY4Hh2PUYEE4uyHbYVr57cMjfmmA5Pg4I4FJrpLrF3
 eM2Avl/4pIbsW3zxXVB8QbAkgypxZErk3teDK1AkPJnlnBYM1jGKbt/GdKe7vcHR
 V/o+7NlcbS3oHVItQ2gP3m91stjFq+NhixaZpa0VlmuqayBa3xNGl0G6OQ==
 =ZbNW
 -----END PGP SIGNATURE-----

Merge tag 'for-upstream' of https://gitlab.com/bonzini/qemu into staging

* target/i386: Introduce SapphireRapids-v3 to add missing features
* switch boards to "default y"
* allow building emulators without any board
* configs: list "implied" device groups in the default configs
* remove unnecessary declarations from typedefs.h
* target/i386: Give IRQs a chance when resetting HF_INHIBIT_IRQ_MASK

# -----BEGIN PGP SIGNATURE-----
#
# iQFIBAABCAAyFiEE8TM4V0tmI4mGbHaCv/vSX3jHroMFAmY1ILsUHHBib256aW5p
# QHJlZGhhdC5jb20ACgkQv/vSX3jHroNtIwf+MEehq2HudZvsK1M8FrvNmkB/AssO
# x4tqL8DlTus23mQDBu9+rANTB93ManJdK9ybtf6NfjEwK+R8RJslLVnuy/qT+aQX
# PD208L88fjZg17G8uyawwvD1VmqWzHFSN14ShmKzqB2yPXXo/1cJ30w78DbD50yC
# 6rw/xbC5j195CwE2u8eBcIyY4Hh2PUYEE4uyHbYVr57cMjfmmA5Pg4I4FJrpLrF3
# eM2Avl/4pIbsW3zxXVB8QbAkgypxZErk3teDK1AkPJnlnBYM1jGKbt/GdKe7vcHR
# V/o+7NlcbS3oHVItQ2gP3m91stjFq+NhixaZpa0VlmuqayBa3xNGl0G6OQ==
# =ZbNW
# -----END PGP SIGNATURE-----
# gpg: Signature made Fri 03 May 2024 10:36:59 AM PDT
# gpg:                using RSA key F13338574B662389866C7682BFFBD25F78C7AE83
# gpg:                issuer "pbonzini@redhat.com"
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" [full]
# gpg:                 aka "Paolo Bonzini <pbonzini@redhat.com>" [full]

* tag 'for-upstream' of https://gitlab.com/bonzini/qemu: (46 commits)
  qga/commands-posix: fix typo in qmp_guest_set_user_password
  migration: do not include coroutine_int.h
  kvm: move target-dependent interrupt routing out of kvm-all.c
  pci: remove some types from typedefs.h
  tcg: remove CPU* types from typedefs.h
  display: remove GraphicHwOps from typedefs.h
  qapi/machine: remove types from typedefs.h
  monitor: remove MonitorDef from typedefs.h
  migration: remove PostcopyDiscardState from typedefs.h
  lockable: remove QemuLockable from typedefs.h
  intc: remove PICCommonState from typedefs.h
  qemu-option: remove QemuOpt from typedefs.h
  net: remove AnnounceTimer from typedefs.h
  numa: remove types from typedefs.h
  qdev-core: remove DeviceListener from typedefs.h
  fw_cfg: remove useless declarations from typedefs.h
  build: do not build virtio-vga-gl if virgl/opengl not available
  bitmap: Use g_try_new0/g_new0/g_renew
  target/i386: Introduce SapphireRapids-v3 to add missing features
  docs: document new convention for Kconfig board symbols
  ...

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-05-06 08:34:34 -07:00
Philippe Mathieu-Daudé
b254c342cf accel/tcg: Access tcg_cflags with getter / setter
Access the CPUState::tcg_cflags via tcg_cflags_has() and
tcg_cflags_set() helpers.

Mechanical change using the following Coccinelle spatch script:

  @@
  expression cpu;
  expression flags;
  @@
  -     cpu->tcg_cflags & flags
  +     tcg_cflags_has(cpu, flags)

  @@
  expression cpu;
  expression flags;
  @@
  -     (tcg_cflags_has(cpu, flags))
  +     tcg_cflags_has(cpu, flags)

  @@
  expression cpu;
  expression flags;
  @@
  -     cpu->tcg_cflags |= flags;
  +     tcg_cflags_set(cpu, flags);

Then manually moving the declarations, and adding both
tcg_cflags_has() and tcg_cflags_set() definitions.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20240427155714.53669-15-philmd@linaro.org>
2024-05-06 11:21:05 +02:00
Philippe Mathieu-Daudé
74781c0888 exec/cpu: Extract page-protection definitions to page-protection.h
Extract page-protection definitions from "exec/cpu-all.h"
to "exec/page-protection.h".

The list of files requiring the new header was generated
using:

$ git grep -wE \
  'PAGE_(READ|WRITE|EXEC|RWX|VALID|ANON|RESERVED|TARGET_.|PASSTHROUGH)'

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Acked-by: Nicholas Piggin <npiggin@gmail.com>
Acked-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20240427155714.53669-3-philmd@linaro.org>
2024-05-06 11:17:15 +02:00
BALATON Zoltan
86b7c55182 exec/cpu: Rename PAGE_BITS macro to PAGE_RWX
This macro can be used to abbreviate PAGE_READ | PAGE_WRITE | PAGE_EXEC
for which PAGE_RWX is a better name and renaming it also shows it is
not related to TARGET_PAGE_BITS.

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20240505121008.44A0D4E602D@zero.eik.bme.hu>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
2024-05-06 11:17:15 +02:00
Taylor Simpson
a469666149 Hexagon (target/hexagon) Remove hex_common.read_attribs_file
The attribinfo data structure is not used
Adjust the command-line arguments to the python scripts
Add hex_common.read_common_files for TCG/helper generation scripts

Signed-off-by: Taylor Simpson <ltaylorsimpson@gmail.com>
Reviewed-by: Brian Cain <bcain@quicinc.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20240307032327.4799-10-ltaylorsimpson@gmail.com>
Signed-off-by: Brian Cain <bcain@quicinc.com>
2024-05-05 16:22:07 -07:00
Taylor Simpson
582c59efae Hexagon (target/hexagon) Remove gen_shortcode.py
This data structure is not used

Signed-off-by: Taylor Simpson <ltaylorsimpson@gmail.com>
Reviewed-by: Brian Cain <bcain@quicinc.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20240307032327.4799-9-ltaylorsimpson@gmail.com>
Signed-off-by: Brian Cain <bcain@quicinc.com>
2024-05-05 16:22:07 -07:00
Taylor Simpson
b45c1b5124 Hexagon (target/hexagon) Remove gen_op_regs.py
Signed-off-by: Taylor Simpson <ltaylorsimpson@gmail.com>
Reviewed-by: Brian Cain <bcain@quicinc.com>
Message-Id: <20240307032327.4799-8-ltaylorsimpson@gmail.com>
Signed-off-by: Brian Cain <bcain@quicinc.com>
2024-05-05 16:22:07 -07:00
Taylor Simpson
09a7e7db0f Hexagon (target/hexagon) Remove uses of op_regs_generated.h.inc
Signed-off-by: Taylor Simpson <ltaylorsimpson@gmail.com>
Reviewed-by: Brian Cain <bcain@quicinc.com>
Message-Id: <20240307032327.4799-7-ltaylorsimpson@gmail.com>
Signed-off-by: Brian Cain <bcain@quicinc.com>
2024-05-05 16:22:07 -07:00
Taylor Simpson
4614b8f36a Hexagon (target/hexagon) Mark has_pred_dest in trans functions
Check that the value matches opcode_wregs

Signed-off-by: Taylor Simpson <ltaylorsimpson@gmail.com>
Reviewed-by: Brian Cain <bcain@quicinc.com>
Message-Id: <20240307032327.4799-5-ltaylorsimpson@gmail.com>
Signed-off-by: Brian Cain <bcain@quicinc.com>
2024-05-05 16:22:07 -07:00
Taylor Simpson
325a64af06 Hexagon (target/hexagon) Mark dest_idx in trans functions
Check that the value matches opcode_reginfo/opcode_wregs

Signed-off-by: Taylor Simpson <ltaylorsimpson@gmail.com>
Reviewed-by: Brian Cain <bcain@quicinc.com>
Message-Id: <20240307032327.4799-4-ltaylorsimpson@gmail.com>
Signed-off-by: Brian Cain <bcain@quicinc.com>
2024-05-05 16:22:07 -07:00
Taylor Simpson
9196381993 Hexagon (target/hexagon) Mark new_read_idx in trans functions
Check that the value matches opcode_reginfo

Signed-off-by: Taylor Simpson <ltaylorsimpson@gmail.com>
Reviewed-by: Brian Cain <bcain@quicinc.com>
Message-Id: <20240307032327.4799-3-ltaylorsimpson@gmail.com>
Signed-off-by: Brian Cain <bcain@quicinc.com>
2024-05-05 16:22:07 -07:00
Taylor Simpson
2720bd1dbd Hexagon (target/hexagon) Add is_old/is_new to Register class
Signed-off-by: Taylor Simpson <ltaylorsimpson@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Brian Cain <bcain@quicinc.com>
Message-Id: <20240307032327.4799-2-ltaylorsimpson@gmail.com>
Signed-off-by: Brian Cain <bcain@quicinc.com>
2024-05-05 16:22:07 -07:00
Taylor Simpson
2f0a771ddc Hexagon (target/hexagon) Only pass env to generated helper when needed
Currently, we pass env to every generated helper.  When the semantics of
the instruction only depend on the arguments, this is unnecessary and
adds extra overhead to the helper call.

We add the TCG_CALL_NO_RWG_SE flag to any non-HVX helpers that don't get
the ptr to env.

The A2_nop and SA1_setin1 instructions end up with no arguments.  This
results in a "old-style function definition" error from the compiler, so
we write overrides for them.

With this change, the number of helpers with env argument is
    idef-parser enabled:    329 total, 23 with env
    idef-parser disabled:   1543 total, 550 with env

Signed-off-by: Taylor Simpson <ltaylorsimpson@gmail.com>
Reviewed-by: Anton Johansson <anjo@rev.ng>
Tested-by: Anton Johansson <anjo@rev.ng>
Message-Id: <20240214042726.19290-4-ltaylorsimpson@gmail.com>
Signed-off-by: Brian Cain <bcain@quicinc.com>
2024-05-05 16:22:07 -07:00
Taylor Simpson
f7be65fbbf Hexagon (target/hexagon) Pass SP explicitly to helpers that need it
Rather than reading SP from the env, pass it explicitly

Signed-off-by: Taylor Simpson <ltaylorsimpson@gmail.com>
Reviewed-by: Anton Johansson <anjo@rev.ng>
Tested-by: Anton Johansson <anjo@rev.ng>
Reviewed-by: Brian Cain <bcain@quicinc.com>
Message-Id: <20240214042726.19290-3-ltaylorsimpson@gmail.com>
Signed-off-by: Brian Cain <bcain@quicinc.com>
2024-05-05 16:22:07 -07:00
Taylor Simpson
850d06225b Hexagon (target/hexagon) Pass P0 explicitly to helpers that need it
Rather than reading P0 from the env, pass it explicitly

Signed-off-by: Taylor Simpson <ltaylorsimpson@gmail.com>
Reviewed-by: Anton Johansson <anjo@rev.ng>
Tested-by: Anton Johansson <anjo@rev.ng>
Reviewed-by: Brian Cain <bcain@quicinc.com>
Message-Id: <20240214042726.19290-2-ltaylorsimpson@gmail.com>
Signed-off-by: Brian Cain <bcain@quicinc.com>
2024-05-05 16:22:07 -07:00
Taylor Simpson
763d2ce7c4 Hexagon (target/hexagon) Enable more short-circuit packets (HVX)
Look for read-after-write instead of overlap of reads and writes

HVX instructions with helpers have pass-by-reference semantics, so
we check for overlaps of reads and writes within the same instruction.

Signed-off-by: Taylor Simpson <ltaylorsimpson@gmail.com>
Reviewed-by: Brian Cain <bcain@quicinc.com>
Message-Id: <20240201103340.119081-4-ltaylorsimpson@gmail.com>
Signed-off-by: Brian Cain <bcain@quicinc.com>
2024-05-05 16:22:07 -07:00
Taylor Simpson
bd983f68ac Hexagon (target/hexagon) Enable more short-circuit packets (scalar core)
Look for read-after-write instead of overlap of reads and writes

Here is an example with overalp but no read-after-write:
0x000200fc:  0x38103876	{	R0 = add(R0,R1); R6 = add(R6,R7) }

BEFORE:
 ---- 00000000000200fc
 mov_i32 loc2,$0x0
 mov_i32 loc2,r0
 add_i32 loc3,loc2,r1
 mov_i32 loc2,loc3
 mov_i32 loc4,$0x0
 mov_i32 loc4,r6
 add_i32 loc5,loc4,r7
 mov_i32 loc4,loc5
 mov_i32 r0,loc2
 mov_i32 r6,loc4

AFTER:
 ---- 00000000000200fc
 add_i32 loc2,r0,r1
 mov_i32 r0,loc2
 add_i32 loc3,r6,r7
 mov_i32 r6,loc3

We can also short-circuit packets with .new values by reading from the
real destination instead of the temporary.
0x00020100:  0x78005ff3	{	R19 = #0xff
0x00020104:  0x2002e204		if (cmp.eq(N19.new,R2)) jump:t PC+8 }

BEFORE:
 ---- 0000000000020100
 mov_i32 pc,$0x20108
 mov_i32 loc8,$0x0
 mov_i32 loc8,$0xff
 setcond_i32 loc10,loc8,r2,eq
 mov_i32 loc6,loc10
 mov_i32 r19,loc8
 add_i32 pkt_cnt,pkt_cnt,$0x2
 add_i32 insn_cnt,insn_cnt,$0x4
 brcond_i32 loc6,$0x0,eq,$L1
 goto_tb $0x0
 mov_i32 pc,$0x20108
 exit_tb $0x7fbb54000040
 set_label $L1
 goto_tb $0x1
 exit_tb $0x7fbb54000041
 set_label $L0
 exit_tb $0x7fbb54000043

AFTER:
 ---- 0000000000020100
 mov_i32 pc,$0x20108
 mov_i32 r19,$0xff
 setcond_i32 loc7,r19,r2,eq
 mov_i32 loc4,loc7
 add_i32 pkt_cnt,pkt_cnt,$0x2
 add_i32 insn_cnt,insn_cnt,$0x4
 brcond_i32 loc4,$0x0,eq,$L1
 goto_tb $0x0
 mov_i32 pc,$0x20108
 exit_tb $0x7f9764000040
 set_label $L1
 goto_tb $0x1
 exit_tb $0x7f9764000041
 set_label $L0
 exit_tb $0x7f9764000043

Signed-off-by: Taylor Simpson <ltaylorsimpson@gmail.com>
Reviewed-by: Brian Cain <bcain@quicinc.com>
Message-Id: <20240201103340.119081-3-ltaylorsimpson@gmail.com>
Signed-off-by: Brian Cain <bcain@quicinc.com>
2024-05-05 16:22:07 -07:00
Taylor Simpson
76eaa97157 Hexagon (target/hexagon) Analyze reads before writes
We divide gen_analyze_funcs.py into 3 phases
    Declare the operands
    Analyze the register reads
    Analyze the register writes

We also create special versions of ctx_log_*_read for new operands
    Check that the operand is written before the read

This is a precursor to improving the analysis for short-circuiting
the packet semantics in a subsequent commit

Signed-off-by: Taylor Simpson <ltaylorsimpson@gmail.com>
Reviewed-by: Brian Cain <bcain@quicinc.com>
Message-Id: <20240201103340.119081-2-ltaylorsimpson@gmail.com>
Signed-off-by: Brian Cain <bcain@quicinc.com>
2024-05-05 16:22:07 -07:00
Richard Henderson
d6f898cf85 target/sparc: Split out do_ms16b
The unit operation for fmul8x16 and friends is described in the
manual as "MS16b".  Split that out for clarity.  Improve rounding
with an unconditional addition of 0.5 as a fixed-point integer.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20240502165528.244004-8-richard.henderson@linaro.org>
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
2024-05-05 21:02:48 +01:00
Richard Henderson
d3ef26afde target/sparc: Fix FPMERGE
This instruction has f32 inputs, which changes the decode
of the register numbers.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20240502165528.244004-7-richard.henderson@linaro.org>
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
2024-05-05 21:02:48 +01:00
Richard Henderson
be8998e046 target/sparc: Fix FMULD8*X16
Not only do these instructions have f32 inputs, they also do not
perform rounding.  Since these are relatively simple, implement
them properly inline.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20240502165528.244004-6-richard.henderson@linaro.org>
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
2024-05-05 21:02:48 +01:00
Richard Henderson
a859602c74 target/sparc: Fix FMUL8x16A{U,L}
These instructions have f32 inputs, which changes the decode
of the register numbers.  While we're fixing things, use a
common helper for both insns, extracting the 16-bit scalar
in tcg beforehand.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20240502165528.244004-5-richard.henderson@linaro.org>
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
2024-05-05 21:02:48 +01:00
Richard Henderson
9157dccc7e target/sparc: Fix FMUL8x16
This instruction has f32 as source1, which alters the
decoding of the register number, which means we've been
passing the wrong data for odd register numbers.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20240502165528.244004-4-richard.henderson@linaro.org>
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
2024-05-05 21:02:48 +01:00
Richard Henderson
7b616f36de target/sparc: Fix FEXPAND
This is a 2-operand instruction, not 3-operand.
Worse, we took the source from the wrong operand.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20240502165528.244004-3-richard.henderson@linaro.org>
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
2024-05-05 21:02:48 +01:00
Thomas Huth
4a7bdec3a6 target/sparc/cpu: Avoid spaces by default in the CPU names
The output of "-cpu help" is currently rather confusing to the users:
It might not be fully clear which part of the output defines the CPU
names since the CPU names contain white spaces (which we later have to
convert into dashes internally). At best it's at least a nuisance since
the users might need to specify the CPU names with quoting on the command
line if they are not aware of the fact that the CPU names could be written
with dashes instead. So let's finally clean up this mess by using dashes
instead of white spaces for the CPU names, like we're doing it internally
later (and like we're doing it in most other targets of QEMU).
Note that it is still possible to pass the CPU names with spaces to the
"-cpu" option, since sparc_cpu_type_name() still translates those to "-".

Fixes: https://gitlab.com/qemu-project/qemu/-/issues/2141
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20240419084812.504779-3-thuth@redhat.com>
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
2024-05-05 21:02:48 +01:00
Thomas Huth
6b568e3f1d target/sparc/cpu: Rename the CPU models with a "+" in their names
Commit b447378e12 ("qom/object: Limit type names to alphanumerical ...")
cut down the amount of allowed characters for QOM types to a saner set.
The "+" character was meant to be included in this set, so we had to
add a hack there to still allow the legacy names of POWER and Sparc64
CPUs. However, instead of putting such a hack in the common QOM code,
there is a much better place to do this: The sparc_cpu_class_by_name()
function which is used to look up the names of all Sparc CPUs.
Thus let's finally get rid of the "+" in the Sparc CPU names, and provide
backward compatibility for the old names via some simple checks in the
sparc_cpu_class_by_name() function.

Reviewed-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20240419084812.504779-2-thuth@redhat.com>
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
2024-05-05 21:02:47 +01:00
Richard Henderson
23bb086350 target/alpha: Implement CF_PCREL
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20240503072014.24751-10-philmd@linaro.org>
2024-05-04 08:05:51 -07:00
Richard Henderson
b1a3eacf31 target/alpha: Split out gen_pc_disp
Prepare for pcrel by not modifying cpu_pc before use,
in the case of JSR.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20240503072014.24751-9-philmd@linaro.org>
2024-05-04 08:05:51 -07:00
Richard Henderson
82b60d2509 target/alpha: Split out gen_goto_tb
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20240424234436.995410-4-richard.henderson@linaro.org>
[PMD: Split bigger patch, part 5/5]
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20240503072014.24751-8-philmd@linaro.org>
2024-05-04 08:05:49 -07:00
Philippe Mathieu-Daudé
39482c2edc target/alpha: Simplify gen_bcond_internal()
Richard Henderson explained on IRC:

  bcond_internal() used to insist that both branch
  destination and branch fallthrough are use_goto_tb;
  if not, we'd use movcond to compute an indirect jump.
  But it's perfectly fine for e.g. the branch fallthrough
  to use_goto_tb, and the branch destination to use
  an indirect branch.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20240424234436.995410-4-richard.henderson@linaro.org>
[PMD: Split bigger patch, part 4/5]
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20240503072014.24751-7-philmd@linaro.org>
2024-05-04 08:02:57 -07:00
Richard Henderson
9804ab26d0 target/alpha: Return DISAS_NORETURN once
Trivial change to make next commits easier to understand.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20240424234436.995410-4-richard.henderson@linaro.org>
[PMD: Split bigger patch, part 3/5]
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20240503072014.24751-6-philmd@linaro.org>
2024-05-04 07:38:09 -07:00
Richard Henderson
c0fcd5612e target/alpha: Inline DISAS_PC_UPDATED and return DISAS_NORETURN
Inline DISAS_PC_UPDATED switch case from alpha_tr_tb_stop():

    switch (ctx->base.is_jmp) {
    ...
    case DISAS_PC_UPDATED:
        tcg_gen_lookup_and_goto_ptr();
        break;

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20240424234436.995410-4-richard.henderson@linaro.org>
[PMD: Split bigger patch, part 2/5]
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20240503072014.24751-5-philmd@linaro.org>
2024-05-04 07:38:09 -07:00
Richard Henderson
0cda93c9b5 target/alpha: Use DISAS_NEXT definition instead of magic '0' value
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20240424234436.995410-4-richard.henderson@linaro.org>
[PMD: Split bigger patch, part 1/5]
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20240503072014.24751-4-philmd@linaro.org>
2024-05-04 07:38:08 -07:00
Richard Henderson
1bcae46aac target/alpha: Hoist branch shift to initial decode
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20240503072014.24751-3-philmd@linaro.org>
2024-05-04 07:38:08 -07:00
Richard Henderson
ab709f13b8 target/alpha: Use cpu_env in preference to ALPHA_CPU
ALPHA_CPU has a dynamic object type assert, which is
unnecessary considering that these are all class hooks.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20240503072014.24751-2-philmd@linaro.org>
2024-05-04 07:38:08 -07:00
Richard Henderson
97c872276d - Fix NULL dereference in NVMM & WHPX init_vcpu()
- Move user emulation headers "exec/user" to "user"
 - Fix SH-4 ADDV / SUBV opcodes
 - Drop Cocoa compatility on macOS <= 10.12
 - Update Anthony PERARD email
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCAAdFiEE+qvnXhKRciHc/Wuy4+MsLN6twN4FAmY1BE4ACgkQ4+MsLN6t
 wN73jg//dbdHQU+4oM7BgTduDZn1ulKz5DtNEJawRP6vxIcSQ+Co2Yd+gdLOSXNI
 2BaoiOQ8cyDEHj1Uud3WVB0GsQYvHrqgXcjeHpX6yFFCZNyRvzEXizJPHKCtq+4e
 XQFtfTFftlJdaKCLqyDqVnrVNRacFPm7kinrEQbTSmglAhwnyu3GwsokDAYiJTqp
 g0n6mX/pWVEMDNY1HrDsk2Q/pyIZFmzhtuRyXRvi/bh8/BnmMCpySG+2463dnu1O
 xIGr2w8ldc+mKn2w2k3wYKDnUHz/NhOkE86tL/ZxIgjCzeenZXwXNdzM+cuAmOZX
 L9KIu5io6bTevYVwwHhd5/N6MCqVEhoRmsUQfF0CIkIzxXbyF14M89YHXZo3YJAd
 n2uoJ7i6hF/4Pt6Uqlg09+vEk7onwrobnTPnbKHEKNWHNOMKXpq1CBxxcVz2qe24
 +CTAAOOhHqaTjODPSexzHZDZYxugCy1XSqps9AFF1HqUcmsPCL/PQ75YGTJJO0oF
 0V1Yvzjhin26AQS9SglIeXnHxYC26Cg2mXnUpVbryWnG888r0XAGpRl+FEuXK7Ln
 /dGuCIWTozypSkG9304IlxlYsOoXhL11NZqINW+W/Tor3dMRQhWUQcHqv98Jl4Ad
 rnpzZ0Dhd9ityZdbI0CCMZZZLY5dw1Rq5q407GTJr1CDU4PJBh0=
 =N8q0
 -----END PGP SIGNATURE-----

Merge tag 'accel-sh4-ui-20240503' of https://github.com/philmd/qemu into staging

- Fix NULL dereference in NVMM & WHPX init_vcpu()
- Move user emulation headers "exec/user" to "user"
- Fix SH-4 ADDV / SUBV opcodes
- Drop Cocoa compatility on macOS <= 10.12
- Update Anthony PERARD email

# -----BEGIN PGP SIGNATURE-----
#
# iQIzBAABCAAdFiEE+qvnXhKRciHc/Wuy4+MsLN6twN4FAmY1BE4ACgkQ4+MsLN6t
# wN73jg//dbdHQU+4oM7BgTduDZn1ulKz5DtNEJawRP6vxIcSQ+Co2Yd+gdLOSXNI
# 2BaoiOQ8cyDEHj1Uud3WVB0GsQYvHrqgXcjeHpX6yFFCZNyRvzEXizJPHKCtq+4e
# XQFtfTFftlJdaKCLqyDqVnrVNRacFPm7kinrEQbTSmglAhwnyu3GwsokDAYiJTqp
# g0n6mX/pWVEMDNY1HrDsk2Q/pyIZFmzhtuRyXRvi/bh8/BnmMCpySG+2463dnu1O
# xIGr2w8ldc+mKn2w2k3wYKDnUHz/NhOkE86tL/ZxIgjCzeenZXwXNdzM+cuAmOZX
# L9KIu5io6bTevYVwwHhd5/N6MCqVEhoRmsUQfF0CIkIzxXbyF14M89YHXZo3YJAd
# n2uoJ7i6hF/4Pt6Uqlg09+vEk7onwrobnTPnbKHEKNWHNOMKXpq1CBxxcVz2qe24
# +CTAAOOhHqaTjODPSexzHZDZYxugCy1XSqps9AFF1HqUcmsPCL/PQ75YGTJJO0oF
# 0V1Yvzjhin26AQS9SglIeXnHxYC26Cg2mXnUpVbryWnG888r0XAGpRl+FEuXK7Ln
# /dGuCIWTozypSkG9304IlxlYsOoXhL11NZqINW+W/Tor3dMRQhWUQcHqv98Jl4Ad
# rnpzZ0Dhd9ityZdbI0CCMZZZLY5dw1Rq5q407GTJr1CDU4PJBh0=
# =N8q0
# -----END PGP SIGNATURE-----
# gpg: Signature made Fri 03 May 2024 08:35:42 AM PDT
# gpg:                using RSA key FAABE75E12917221DCFD6BB2E3E32C2CDEADC0DE
# gpg: Good signature from "Philippe Mathieu-Daudé (F4BUG) <f4bug@amsat.org>" [full]

* tag 'accel-sh4-ui-20240503' of https://github.com/philmd/qemu:
  ui/cocoa.m: Drop old macOS-10.12-and-earlier compat ifdefs
  target/sh4: Rename TCGv variables as manual for SUBV opcode
  target/sh4: Rename TCGv variables as manual for ADDV opcode
  target/sh4: Fix SUBV opcode
  target/sh4: Fix ADDV opcode
  MAINTAINERS: Update my email address
  plugins: Update stale comment
  plugins/api: Only include 'exec/ram_addr.h' with system emulation
  coverity: Update user emulation regexp
  user: Move 'thunk.h' from 'exec/user' to 'user'
  user: Move 'abitypes.h' from 'exec/user' to 'user'
  exec: Include missing license in 'exec/cpu-common.h'
  accel/whpx: Fix NULL dereference in whpx_init_vcpu()
  accel/nvmm: Fix NULL dereference in nvmm_init_vcpu()

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-05-03 14:42:50 -07:00
Philippe Mathieu-Daudé
942ba09d7c target/sh4: Rename TCGv variables as manual for SUBV opcode
To easily compare with the SH4 manual, rename:

  REG(B11_8) -> Rn
  REG(B7_4) -> Rm
  t0 -> result

Mention how underflow is calculated.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20240430163125.77430-5-philmd@linaro.org>
2024-05-03 17:33:26 +02:00
Philippe Mathieu-Daudé
40ed073f89 target/sh4: Rename TCGv variables as manual for ADDV opcode
To easily compare with the SH4 manual, rename:

  REG(B11_8) -> Rn
  REG(B7_4) -> Rm
  t0 -> result

Mention how overflow is calculated.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Yoshinori Sato <ysato@users.sourceforge.jp>
Message-Id: <20240430163125.77430-4-philmd@linaro.org>
2024-05-03 17:33:26 +02:00
Philippe Mathieu-Daudé
e88a856efd target/sh4: Fix SUBV opcode
The documentation says:

  SUBV Rm, Rn        Rn - Rm -> Rn, underflow -> T

The overflow / underflow can be calculated as:

  T = ((Rn ^ Rm) & (Result ^ Rn)) >> 31

However we were using the incorrect:

  T = ((Rn ^ Rm) & (Result ^ Rm)) >> 31

Fix by using the Rn register instead of Rm.

Add tests provided by Paul Cercueil.

Cc: qemu-stable@nongnu.org
Fixes: ad8d25a11f ("target-sh4: implement addv and subv using TCG")
Reported-by: Paul Cercueil <paul@crapouillou.net>
Suggested-by: Paul Cercueil <paul@crapouillou.net>
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2318
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Yoshinori Sato <ysato@users.sourceforge.jp>
Message-Id: <20240430163125.77430-3-philmd@linaro.org>
2024-05-03 17:33:26 +02:00
Philippe Mathieu-Daudé
c365e6b070 target/sh4: Fix ADDV opcode
The documentation says:

  ADDV Rm, Rn        Rn + Rm -> Rn, overflow -> T

But QEMU implementation was:

  ADDV Rm, Rn        Rn + Rm -> Rm, overflow -> T

Fix by filling the correct Rm register.

Add tests provided by Paul Cercueil.

Cc: qemu-stable@nongnu.org
Fixes: ad8d25a11f ("target-sh4: implement addv and subv using TCG")
Reported-by: Paul Cercueil <paul@crapouillou.net>
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2317
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Yoshinori Sato <ysato@users.sourceforge.jp>
Message-Id: <20240430163125.77430-2-philmd@linaro.org>
2024-05-03 17:33:26 +02:00
Lei Wang
b10b248173 target/i386: Introduce SapphireRapids-v3 to add missing features
Add the missing features(ss, tsc-adjust, cldemote, movdiri, movdir64b) in
the SapphireRapids-v3 CPU model.

Signed-off-by: Lei Wang <lei4.wang@intel.com>
Message-ID: <20240424072912.43188-1-lei4.wang@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2024-05-03 15:47:48 +02:00
Paolo Bonzini
bf616ce47b ppc: switch boards to "default y"
Some targets use "default y" for boards to filter out those that require
TCG.  For consistency we are switching all other targets to do the same.
Continue with PowerPC/POWER.

No changes to generated config-devices.mak files, other than
adding CONFIG_PPC to the ppc64-softmmu target.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2024-05-03 15:47:47 +02:00
Paolo Bonzini
bae3e3a5c6 meson: make target endianneess available to Kconfig
Some targets use "default y" for boards to filter out those that require
TCG.  For consistency we are switching all other targets to do the same.
MIPS boards may only be available for big-endian or only for
little-endian emulators, add a symbol so that this can be described
with a "depends on" clause.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2024-05-03 15:47:47 +02:00
Paolo Bonzini
4921d0a753 i386: switch boards to "default y"
Some targets use "default y" for boards to filter out those that require
TCG.  For consistency we are switching all other targets to do the same.
Continue with i386.

No changes to generated config-devices.mak files, other than
adding CONFIG_I386 to the x86_64-softmmu target.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2024-05-03 15:47:47 +02:00
Paolo Bonzini
566abdb4d9 kvm: ppc: disable sPAPR code if CONFIG_PSERIES is disabled
target/ppc/kvm.c calls out to code in hw/ppc/spapr*.c; that code is
not present and fails to link if CONFIG_PSERIES is not enabled.
Adjust kvm.c to depend on CONFIG_PSERIES instead of TARGET_PPC64,
and compile out anything that requires cap_papr, because only
the pseries machine will call kvmppc_set_papr().

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2024-05-03 15:47:47 +02:00
Philippe Mathieu-Daudé
083367dbbf accel/whpx: Fix NULL dereference in whpx_init_vcpu()
When mechanically moving the @dirty field to AccelCPUState
in commit 9ad49538c7, we neglected cpu->accel is still NULL
when we want to dereference it.

Fixes: 9ad49538c7 ("accel/whpx: Use accel-specific per-vcpu @dirty field")
Reported-by: Volker Rümelin <vr_qemu@t-online.de>
Suggested-by: Volker Rümelin <vr_qemu@t-online.de>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20240429091918.27429-2-philmd@linaro.org>
2024-05-03 14:37:51 +02:00
Philippe Mathieu-Daudé
61653b4a97 accel/nvmm: Fix NULL dereference in nvmm_init_vcpu()
When mechanically moving the @dirty field to AccelCPUState
in commit 79f1926b2d, we neglected cpu->accel is still NULL
when we want to dereference it.

Reported-by: Volker Rümelin <vr_qemu@t-online.de>
Suggested-by: Volker Rümelin <vr_qemu@t-online.de>
Fixes: 79f1926b2d ("accel/nvmm: Use accel-specific per-vcpu @dirty field")
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20240429091918.27429-3-philmd@linaro.org>
2024-05-03 14:37:51 +02:00
Paolo Bonzini
5ce77fcb1b Kconfig: kvm: allow building without any board
KVM code might have to call functions on the PCIDevice that is
passed to kvm_arch_fixup_msi_route().  This fails in the case
where --without-default-devices is used and no board is
configured.  While this is not really a useful configuration,
and therefore setting up stubs for CONFIG_PCI is overkill,
failing the build is impolite.  Just include the PCI
subsystem if kvm_arch_fixup_msi_route() requires it, as
is the case for ARM and x86.

Reported-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Tested-by: Fabiano Rosas <farosas@suse.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2024-05-03 14:16:26 +02:00
Ruihan Li
6a5a63f74b target/i386: Give IRQs a chance when resetting HF_INHIBIT_IRQ_MASK
When emulated with QEMU, interrupts will never come in the following
loop. However, if the NOP instruction is uncommented, interrupts will
fire as normal.

	loop:
		cli
    		call do_sti
		jmp loop

	do_sti:
		sti
		# nop
		ret

This behavior is different from that of a real processor. For example,
if KVM is enabled, interrupts will always fire regardless of whether the
NOP instruction is commented or not. Also, the Intel Software Developer
Manual states that after the STI instruction is executed, the interrupt
inhibit should end as soon as the next instruction (e.g., the RET
instruction if the NOP instruction is commented) is executed.

This problem is caused because the previous code may choose not to end
the TB even if the HF_INHIBIT_IRQ_MASK has just been reset (e.g., in the
case where the STI instruction is immediately followed by the RET
instruction), so that IRQs may not have a change to trigger. This commit
fixes the problem by always terminating the current TB to give IRQs a
chance to trigger when HF_INHIBIT_IRQ_MASK is reset.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Ruihan Li <lrh2000@pku.edu.cn>
Message-ID: <20240415064518.4951-4-lrh2000@pku.edu.cn>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2024-05-03 14:15:48 +02:00