lib: Use __ASSEMBLER__ instead of __ASSEMBLY__

Convert all non-x86 #ifdefs from __ASSEMBLY__ to __ASSEMBLER__, and remove
all manual __ASSEMBLY__ #defines. __ASSEMBLY_ was inherited blindly from
th

lib: Use __ASSEMBLER__ instead of __ASSEMBLY__

Convert all non-x86 #ifdefs from __ASSEMBLY__ to __ASSEMBLER__, and remove
all manual __ASSEMBLY__ #defines. __ASSEMBLY_ was inherited blindly from
the Linux kernel, and must be manually defined, e.g. through build rules
or with the aforementioned explicit #defines in assembly code.

__ASSEMBLER__ on the other hand is automatically defined by the compiler
when preprocessing assembly, i.e. doesn't require manually #defines for
the code to function correctly.

Ignore x86, as x86 doesn't actually rely on __ASSEMBLY__ at the moment,
and is undergoing a parallel cleanup.

Signed-off-by: Sean Christopherson <seanjc@google.com>
Reviewed-by: Andrew Jones <andrew.jones@linux.dev>
Message-ID: <20250222014526.2302653-1-seanjc@google.com>
[thuth: Fix three more occurances in libfdt.h and sbi-tests.h]
Signed-off-by: Thomas Huth <thuth@redhat.com>

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powerpc: Add rtas stop-self support

In preparation for improved SMP support, add stop-self support to the
harness. This is non-trivial because it requires an unlocked rtas
call: a CPU can't be holdi

powerpc: Add rtas stop-self support

In preparation for improved SMP support, add stop-self support to the
harness. This is non-trivial because it requires an unlocked rtas
call: a CPU can't be holding a spin lock when it goes offline or it
will deadlock other CPUs. rtas permits stop-self to be called without
serialising all other rtas operations.

Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Message-ID: <20240504122841.1177683-14-npiggin@gmail.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>

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powerpc: Rework the rtas_token() function

RTAS tokens can have any value, also 0xffffffff is theoretically
allowed (which is currently used for the RTAS_UNKNOWN_SERVICE error
code). Thus we should n

powerpc: Rework the rtas_token() function

RTAS tokens can have any value, also 0xffffffff is theoretically
allowed (which is currently used for the RTAS_UNKNOWN_SERVICE error
code). Thus we should not mix error codes and tokens in the return
value here and return the token value via a pointer parameter
instead.

This patch also adds a check to rtas_token() to test whether the device
tree is available at all. This fixes a possible endless loop that
happens without device tree, spamming the console with "rtas_node:
/rtas: FDT_ERR_BADMAGIC" messages: Somewhere the code calls abort()
due to the missing device tree, and abort() calls exit() which in
turn tries to shut down the VM with rtas_power_off(). rtas_power_off()
needs the device tree again to look up the right RTAS token, where we
then end up in the next iteration.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <1496229338-7113-1-git-send-email-thuth@redhat.com>
Reviewed-by: Andrew Jones <drjones@redhat.com>
Reviewed-by: Laurent Vivier <lvivier@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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powerpc: select endianness

This patch allows to build tests for ppc64 little endian target
(ppc64le) on big and little endian hosts.

We add a new parameter to configure to select the endianness of

powerpc: select endianness

This patch allows to build tests for ppc64 little endian target
(ppc64le) on big and little endian hosts.

We add a new parameter to configure to select the endianness of the
tests (--endian=little or --endian=big).

I have built and tested big and little endian tests on a little
endian host, a big endian host, with kvm_hv and kvm_pr, and on
x86_64 with ppc64 as a TCG target.

Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <1456824930-15078-3-git-send-email-lvivier@redhat.com>
Reviewed-by: Andrew Jones <drjones@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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Merge branch 'ppc64/initial-drop-v7' of https://github.com/rhdrjones/kvm-unit-tests into HEAD

This series brings basic setup; starts a test's C entry point, main(),
and printf, exit, and malloc work

Merge branch 'ppc64/initial-drop-v7' of https://github.com/rhdrjones/kvm-unit-tests into HEAD

This series brings basic setup; starts a test's C entry point, main(),
and printf, exit, and malloc work. Three more series should follow this
one which must bring; vector support, mmu support, and smp support, at
which point I believe the framework could just evolve with the creation
of unit tests.

Tested on TCG and a P8 kvm_pr machine, and Laurent has tested it on
both a PowerMac G5 (kvm_pr) and a kvm_hv machine. I'm looking forward
to hearing more testing feedback from others though.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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powerpc/ppc64: add RTAS support

Add enough RTAS support to start adding RTAS commands. Just add
power-off for now.

Signed-off-by: Andrew Jones <drjones@redhat.com>
Reviewed-by: Thomas Huth <thuth@r

powerpc/ppc64: add RTAS support

Add enough RTAS support to start adding RTAS commands. Just add
power-off for now.

Signed-off-by: Andrew Jones <drjones@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Tested-by: Laurent Vivier <lvivier@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>

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