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Document that -singlestep command line option is deprecated 

Document that the -singlestep command line option is now
deprecated, as it is replaced by either the TCG accelerator
property 'one-insn-per-tb' for system emulation or the new
'-one-insn-per-tb' option for usermode emulation, and remove
the only use of the deprecated syntax from a README.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-id: 20230417164041.684562-7-peter.maydell@linaro.org
This commit is contained in:
Peter Maydell 2023-04-17 17:40:37 +01:00
parent 060e0cd751
commit 12fd0f41d0
3 changed files with 20 additions and 3 deletions
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16
docs/about/deprecated.rst
View File

@ -111,6 +111,22 @@ Use ``-machine acpi=off`` instead.
The HAXM project has been retired (see https://github.com/intel/haxm#status).
Use "whpx" (on Windows) or "hvf" (on macOS) instead.
``-singlestep`` (since 8.1)
'''''''''''''''''''''''''''
The ``-singlestep`` option has been turned into an accelerator property,
and given a name that better reflects what it actually does.
Use ``-accel tcg,one-insn-per-tb=on`` instead.
User-mode emulator command line arguments
-----------------------------------------
``-singlestep`` (since 8.1)
'''''''''''''''''''''''''''
The ``-singlestep`` option has been given a name that better reflects
what it actually does. For both linux-user and bsd-user, use the
new ``-one-insn-per-tb`` option instead.
QEMU Machine Protocol (QMP) commands
------------------------------------

5
qemu-options.hx
View File

@ -4192,10 +4192,11 @@ SRST
ERST
DEF("singlestep", 0, QEMU_OPTION_singlestep, \
"-singlestep always run in singlestep mode\n", QEMU_ARCH_ALL)
"-singlestep deprecated synonym for -accel tcg,one-insn-per-tb=on\n", QEMU_ARCH_ALL)
SRST
``-singlestep``
Run the emulation in single step mode.
This is a deprecated synonym for the TCG accelerator property
``one-insn-per-tb``.
ERST
DEF("preconfig", 0, QEMU_OPTION_preconfig, \

2
tcg/tci/README
View File

@ -49,7 +49,7 @@ The only difference from running QEMU with TCI to running without TCI
should be speed. Especially during development of TCI, it was very
useful to compare runs with and without TCI. Create /tmp/qemu.log by
qemu-system-i386 -d in_asm,op_opt,cpu -D /tmp/qemu.log -singlestep
qemu-system-i386 -d in_asm,op_opt,cpu -D /tmp/qemu.log -accel tcg,one-insn-per-tb=on
once with interpreter and once without interpreter and compare the resulting
qemu.log files. This is also useful to see the effects of additional