bsd-user: define max args in terms of pages

For 32-bit platforms, pass in up to 256k of args. For 64-bit, bump that
to 512k.

Signed-off-by: Kyle Evans <kevans@freebsd.org>
Signed-off-by: Warner Los

bsd-user: define max args in terms of pages

For 32-bit platforms, pass in up to 256k of args. For 64-bit, bump that
to 512k.

Signed-off-by: Kyle Evans <kevans@freebsd.org>
Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

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bsd-user: Include more things in qemu.h

Include more header files to match bsd-user fork.

Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

bsd-user: pull in target_arch_thread.h update target_arch_elf.h

Update target_arch_elf.h to remove thread_init. Move its contents to
target_arch_thread.h and rename to target_thread_init(). Update
e

bsd-user: pull in target_arch_thread.h update target_arch_elf.h

Update target_arch_elf.h to remove thread_init. Move its contents to
target_arch_thread.h and rename to target_thread_init(). Update
elfload.c to call it. Create thread_os_thread.h to hold the os specific
parts of the thread and threat manipulation routines. Currently, it just
includes target_arch_thread.h. target_arch_thread.h contains the at the
moment unused target_thread_set_upcall which will be used in the future
when creating actual thread (i386 has this stubbed, but other
architectures in the bsd-user tree have real ones). FreeBSD doesn't do
AT_HWCAP, so remove that code. Linux does, and this code came from there.

These changes are all interrelated and could be brokend down, but seem
to represent a reviewable changeset since most of the change is boiler
plate.

Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Kyle Evans <kevans@FreeBSD.org>

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bsd-user: Move per-cpu code into target_arch_cpu.h

Move cpu_loop() into target_cpu_loop(), and put that in
target_arch_cpu.h for each architecture.

Signed-off-by: Stacey Son <sson@FreeBSD.org>
Sign

bsd-user: Move per-cpu code into target_arch_cpu.h

Move cpu_loop() into target_cpu_loop(), and put that in
target_arch_cpu.h for each architecture.

Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

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bsd-user: start to move target CPU functions to target_arch*

Move the CPU functions into target_arch_cpu.c that are unique to each
CPU. These are defined in target_arch.h.

Signed-off-by: Stacey Son

bsd-user: start to move target CPU functions to target_arch*

Move the CPU functions into target_arch_cpu.c that are unique to each
CPU. These are defined in target_arch.h.

Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

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bsd-user: save the path to the qemu emulator

Save the path to the qemu emulator. This will be used later when we have
a more complete implementation of exec.

Signed-off-by: Stacey Son <sson@FreeBSD

bsd-user: save the path to the qemu emulator

Save the path to the qemu emulator. This will be used later when we have
a more complete implementation of exec.

Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Warner Losh <imp@bsdimp.com>
Acked-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Kyle Evans <kevans@FreeBSD.org>

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bsd-user: Include host-os.h from main

Include host-os.h from main.c to pick up the default OS to emulate. Set
that default in main().

Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Wa

bsd-user: Include host-os.h from main

Include host-os.h from main.c to pick up the default OS to emulate. Set
that default in main().

Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

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bsd-user: add host-os.h

Host OS specific bits for this implementation go in this file.

Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard

bsd-user: add host-os.h

Host OS specific bits for this implementation go in this file.

Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

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bsd-user: assume pthreads and support of __thread

All compilers for some time have supported this. Follow linux-user and
eliminate the #define THREAD and unconditionally insert __thread where
needed

bsd-user: assume pthreads and support of __thread

All compilers for some time have supported this. Follow linux-user and
eliminate the #define THREAD and unconditionally insert __thread where
needed. Please insert: "(see 24cb36a61c6: "configure: Make NPTL
non-optional")"

Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>

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bsd-user: elfload: simplify bswap a bit.

Reduce the number of ifdefs by always calling the swapping routine, but
making them empty when swapping isn't needed.

Signed-off-by: Warner Losh <imp@bsdimp

bsd-user: elfload: simplify bswap a bit.

Reduce the number of ifdefs by always calling the swapping routine, but
making them empty when swapping isn't needed.

Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

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bsd-user: TARGET_NGROUPS unused in this file, remove

Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

bsd-user: remove a.out support

Remove still-born a.out support. The BSDs switched from a.out to ELF 20+ years
ago. It's out of scope for bsd-user, and what little support there was would
simply wind

bsd-user: remove a.out support

Remove still-born a.out support. The BSDs switched from a.out to ELF 20+ years
ago. It's out of scope for bsd-user, and what little support there was would
simply wind up at a not-implemented message. Simplify the whole mess by removing
it entirely. Should future support be required, it would be better to start from
scratch.

Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>

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bsd-user: Eliminate elf personality

The linux kernel supports a number of different ELF binaries. The Linux userland
emulator inheritted some of that. And we inheritted it from there. However, for
B

bsd-user: Eliminate elf personality

The linux kernel supports a number of different ELF binaries. The Linux userland
emulator inheritted some of that. And we inheritted it from there. However, for
BSD there's only one kind of ELF file supported per platform, so there's no need
to cope with historical quirks. Simply the code as a result.

Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

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bsd-user: implement path searching

Use the PATH to find the executable given a bare argument. We need to do
this so we can implement mixing native and emulated binaries (e.g.,
execing a x86 native b

bsd-user: implement path searching

Use the PATH to find the executable given a bare argument. We need to do
this so we can implement mixing native and emulated binaries (e.g.,
execing a x86 native binary from an emulated arm binary to optimize
parts of the build). By finding the binary, we will know how to exec it.

Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

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bsd-user: Fix calculation of size to allocate

It was incorrect to subtract off the size of an unsigned int here. In
bsd-user fork, this change was made when moving the arch specific items
to specif

bsd-user: Fix calculation of size to allocate

It was incorrect to subtract off the size of an unsigned int here. In
bsd-user fork, this change was made when moving the arch specific items
to specific files. The size in BSD that's available for the arguments
does not need a return address subtracted from it.

Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

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bsd-user: pass the bsd_param into loader_exec

Pass the bsd_param into loader_exec, and adjust. We use it to track the
inital stack allocation and to set stack, open files, and other state
shared bet

bsd-user: pass the bsd_param into loader_exec

Pass the bsd_param into loader_exec, and adjust. We use it to track the
inital stack allocation and to set stack, open files, and other state
shared between bsdload.c and elfload.c

Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>

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bsd-user: move arch specific defines out of elfload.c

Move the architecture specific defines to target_arch_elf.h and delete
them from elfload.c. Only retain ifdefs appropriate for i386 and x86_64.

bsd-user: move arch specific defines out of elfload.c

Move the architecture specific defines to target_arch_elf.h and delete
them from elfload.c. Only retain ifdefs appropriate for i386 and x86_64.
Add the copyright/license comments, and guard ifdefs.

Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

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bsd-user: Remove all non-x86 code from elfload.c

bsd-user only builds x86 at the moment. Remove all non x86 code from
elfload.c. We'll move the x86 code to {i386,x86_64}/target_arch_elf.h
and bring

bsd-user: Remove all non-x86 code from elfload.c

bsd-user only builds x86 at the moment. Remove all non x86 code from
elfload.c. We'll move the x86 code to {i386,x86_64}/target_arch_elf.h
and bring it that support code from the forked bsd-user when the time
comes.

Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

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bsd-user: style nits: bsdload.c whitespace to qemu standard

Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

bsd-user: add license to bsdload.c

Pull in the license statement at the top of the bsdload.c file
from the bsd-user fork version of this file. No functional changes.

Signed-off-by: Warner Losh <imp

bsd-user: add license to bsdload.c

Pull in the license statement at the top of the bsdload.c file
from the bsd-user fork version of this file. No functional changes.

Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

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bsd-user: Add Stacey's copyright to main.c

Add Stacey's updated copyright to main.c

Signed-off-by: Warner Losh <imp@bsdimp.com>
Signed-off-by: Stacey Son <sson@FreeBSD.org>
Reviewed-by: Richard Hen

bsd-user: Add Stacey's copyright to main.c

Add Stacey's updated copyright to main.c

Signed-off-by: Warner Losh <imp@bsdimp.com>
Signed-off-by: Stacey Son <sson@FreeBSD.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

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bsd-user: add copyright header to elfload.c

Add Stacey's copyright to elfload.c

Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henders

bsd-user: add copyright header to elfload.c

Add Stacey's copyright to elfload.c

Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

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bsd-user: remove sparc and sparc64

These are broken here and in the bsd-user fork. They won't be fixed as
FreeBSD has dropped support for sparc. If people wish to support this in
other BSDs, you're

bsd-user: remove sparc and sparc64

These are broken here and in the bsd-user fork. They won't be fixed as
FreeBSD has dropped support for sparc. If people wish to support this in
other BSDs, you're better off starting over than starting from these
files.

Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

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tcg/plugins: implement a qemu_plugin_user_exit helper

In user-mode emulation there is a small race between preexit_cleanup
and exit_group() which means we may end up calling instrumented
instruction

tcg/plugins: implement a qemu_plugin_user_exit helper

In user-mode emulation there is a small race between preexit_cleanup
and exit_group() which means we may end up calling instrumented
instructions before the kernel reaps child threads. To solve this we
implement a new helper which ensures the callbacks are flushed along
with any translations before we let the host do it's a thing.

While we are at it make the documentation of
qemu_plugin_register_atexit_cb clearer as to what the user can expect.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Mahmoud Mandour <ma.mandourr@gmail.com>
Acked-by: Warner Losh <imp@bsdimp.com>
Message-Id: <20210720232703.10650-21-alex.bennee@linaro.org>

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accel/tcg: Merge tcg_exec_init into tcg_init_machine

There is only one caller, and shortly we will need access
to the MachineState, which tcg_init_machine already has.

Reviewed-by: Luis Pires <luis

accel/tcg: Merge tcg_exec_init into tcg_init_machine

There is only one caller, and shortly we will need access
to the MachineState, which tcg_init_machine already has.

Reviewed-by: Luis Pires <luis.pires@eldorado.org.br>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

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