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acpi: add build_append_named_dword, returning an offset in buffer

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This is a very limited form of support for runtime patching -
similar in functionality to what we can do with ACPI_EXTRACT
macros in python, but implemented in C.

This is to allow ACPI code direct access to data tables -
which is exactly what DataTableRegion is there for, except
no known windows release so far implements DataTableRegion.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Xiao Guangrong <guangrong.xiao@linux.intel.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Michael S. Tsirkin 2016-03-01 18:56:07 +08:00
parent 3f3009c098
commit f203549108
2 changed files with 31 additions and 0 deletions
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3
include/hw/acpi/aml-build.h
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@ -368,4 +368,7 @@ void
build_rsdt(GArray *table_data, GArray *linker, GArray *table_offsets,
const char *oem_id, const char *oem_table_id);
int
build_append_named_dword(GArray *array, const char *name_format, ...);
#endif