refactor(context-mgmt): move FEAT_FGT save/restore code into C
At the moment we do the EL2 context save/restore sequence in assembly,
where it is just guarded by #ifdef statement for the build time flags.
This does not cover the FEAT_STATE_CHECK case, where we need to check
for the runtime availability of a feature.
To simplify this extension, and to avoid writing too much code in
assembly, move that sequence into C: it is called from C context
anyways.
This protects the C code with the new version of the is_xxx_present()
check, which combines both build time and runtime check, as necessary,
and allows the compiler to optimise the calls aways, if we don't need
them.
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Change-Id: I7c91bec60efcc00a43429dc0381f7e1c203be780
diff --git a/include/arch/aarch64/arch_helpers.h b/include/arch/aarch64/arch_helpers.h
index 5010ac5..86c1dbe 100644
--- a/include/arch/aarch64/arch_helpers.h
+++ b/include/arch/aarch64/arch_helpers.h
@@ -565,6 +565,14 @@
DEFINE_RENAME_SYSREG_READ_FUNC(rndr, RNDR)
DEFINE_RENAME_SYSREG_READ_FUNC(rndrrs, RNDRRS)
+/* Armv8.6 FEAT_FGT Registers */
+DEFINE_RENAME_SYSREG_RW_FUNCS(hdfgrtr_el2, HDFGRTR_EL2)
+DEFINE_RENAME_SYSREG_RW_FUNCS(hafgrtr_el2, HAFGRTR_EL2)
+DEFINE_RENAME_SYSREG_RW_FUNCS(hdfgwtr_el2, HDFGWTR_EL2)
+DEFINE_RENAME_SYSREG_RW_FUNCS(hfgitr_el2, HFGITR_EL2)
+DEFINE_RENAME_SYSREG_RW_FUNCS(hfgrtr_el2, HFGRTR_EL2)
+DEFINE_RENAME_SYSREG_RW_FUNCS(hfgwtr_el2, HFGWTR_EL2)
+
/* FEAT_HCX Register */
DEFINE_RENAME_SYSREG_RW_FUNCS(hcrx_el2, HCRX_EL2)