feat(spm-mm): switch to simd_ctx_save/restore APIs

This patch demonstrates the trivial changes to transparently switch
the fpregs_context_* helpers to simd_ctx_* helpers.

Signed-off-by: Madhukar Pappireddy <madhukar.pappireddy@arm.com>
Signed-off-by: Okash Khawaja <okash@google.com>
Change-Id: I14bda6bd0ead1f34a570b59be8dec3ac40891c20

services/std_svc/spm/spm_mm/spm_mm_main.c

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017-2022, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2017-2024, Arm Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -13,6 +13,7 @@
 #include <common/debug.h>
 #include <common/runtime_svc.h>
 #include <lib/el3_runtime/context_mgmt.h>
+#include <lib/el3_runtime/simd_ctx.h>
 #include <lib/smccc.h>
 #include <lib/spinlock.h>
 #include <lib/utils.h>
@@ -190,13 +191,13 @@ uint64_t spm_mm_sp_call(uint32_t smc_fid, uint64_t x1, uint64_t x2, uint64_t x3)
 	uint64_t rc;
 	sp_context_t *sp_ptr = &sp_ctx;
 
-#if CTX_INCLUDE_FPREGS
+#if CTX_INCLUDE_FPREGS || CTX_INCLUDE_SVE_REGS
 	/*
-	 * SP runs to completion, no need to restore FP registers of secure context.
+	 * SP runs to completion, no need to restore FP/SVE registers of secure context.
-	 * Save FP registers only for non secure context.
+	 * Save FP/SVE registers only for non secure context.
 	 */
-	fpregs_context_save(get_fpregs_ctx(cm_get_context(NON_SECURE)));
+	simd_ctx_save(NON_SECURE, false);
-#endif
+#endif /* CTX_INCLUDE_FPREGS || CTX_INCLUDE_SVE_REGS */
 
 	/* Wait until the Secure Partition is idle and set it to busy. */
 	sp_state_wait_switch(sp_ptr, SP_STATE_IDLE, SP_STATE_BUSY);
@@ -216,13 +217,13 @@ uint64_t spm_mm_sp_call(uint32_t smc_fid, uint64_t x1, uint64_t x2, uint64_t x3)
 	assert(sp_ptr->state == SP_STATE_BUSY);
 	sp_state_set(sp_ptr, SP_STATE_IDLE);
 
-#if CTX_INCLUDE_FPREGS
+#if CTX_INCLUDE_FPREGS || CTX_INCLUDE_SVE_REGS
 	/*
-	 * SP runs to completion, no need to save FP registers of secure context.
+	 * SP runs to completion, no need to save FP/SVE registers of secure context.
-	 * Restore only non secure world FP registers.
+	 * Restore only non secure world FP/SVE registers.
 	 */
-	fpregs_context_restore(get_fpregs_ctx(cm_get_context(NON_SECURE)));
+	simd_ctx_restore(NON_SECURE);
-#endif
+#endif /* CTX_INCLUDE_FPREGS || CTX_INCLUDE_SVE_REGS */
 
 	return rc;
 }