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tfm: Put saving of FPU context into its own file so it can be reused

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Also, this eases readability.

The new API can be used any time all FP registers must be manually
saved and restored for an operation.

Signed-off-by: Øyvind Rønningstad <oyvind.ronningstad@nordicsemi.no>
This commit is contained in:
Øyvind Rønningstad 2021-06-01 15:23:51 +02:00 • committed by Ioannis Glaropoulos
commit 382bbacb0a
4 changed files with 94 additions and 43 deletions
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20
include/arch/arm/aarch32/cortex_m/fpu.h Normal file
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/*
* Copyright (c) 2021, Nordic Semiconductor ASA
*
* SPDX-License-Identifier: Apache-2.0
*/
#ifndef ZEPHYR_INCLUDE_ARCH_ARM_AARCH32_CORTEX_M_FPU_H_
#define ZEPHYR_INCLUDE_ARCH_ARM_AARCH32_CORTEX_M_FPU_H_
struct fpu_ctx_full {
uint32_t caller_saved[16];
uint32_t callee_saved[16];
uint32_t fpscr;
bool ctx_saved;
};
void z_arm_save_fp_context(struct fpu_ctx_full *buffer);
void z_arm_restore_fp_context(const struct fpu_ctx_full *buffer);
#endif /* ZEPHYR_INCLUDE_ARCH_ARM_AARCH32_CORTEX_M_FPU_H_ */