mirror of
https://github.com/riscv-software-src/opensbi.git
synced 2026-05-23 14:21:32 +01:00
Dave Patel
718e1d194f
Add support for saving and restoring RISC-V floating-point (F/D) extension state in OpenSBI. This introduces a floating-point context structure and helper routines to perform full context save and restore. The floating-point context includes storage for all 32 FPi registers (f0–f31) along with the fcsr control and status register. The register state is saved and restored using double-precision load/store instructions (fsd/fld), and single-precision load/store instructions (fsw/flw) on an RV64 system with F and D-extension support. The implementation follows an eager context switching model where the entire FP state is saved and restored on every context switch. This avoids the need for trap-based lazy management and keeps the design simple and deterministic. Signed-off-by: Dave Patel <dave.patel@riscstar.com> Signed-off-by: Anup Patel <anup.patel@oss.qualcomm.com> Link: https://lore.kernel.org/r/20260518083023.997323-3-anup.patel@oss.qualcomm.com Signed-off-by: Anup Patel <anup@brainfault.org>
107 lines
3.4 KiB
Makefile
107 lines
3.4 KiB
Makefile
#
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# SPDX-License-Identifier: BSD-2-Clause
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#
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# Copyright (c) 2019 Western Digital Corporation or its affiliates.
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#
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# Authors:
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# Anup Patel <anup.patel@wdc.com>
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#
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libsbi-objs-y += riscv_asm.o
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libsbi-objs-y += riscv_atomic.o
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libsbi-objs-y += riscv_hardfp.o
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libsbi-objs-y += riscv_locks.o
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libsbi-objs-y += sbi_ecall.o
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libsbi-objs-y += sbi_ecall_exts.carray.o
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# The order of below extensions is performance optimized
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carray-sbi_ecall_exts-$(CONFIG_SBI_ECALL_TIME) += ecall_time
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libsbi-objs-$(CONFIG_SBI_ECALL_TIME) += sbi_ecall_time.o
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carray-sbi_ecall_exts-$(CONFIG_SBI_ECALL_RFENCE) += ecall_rfence
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libsbi-objs-$(CONFIG_SBI_ECALL_RFENCE) += sbi_ecall_rfence.o
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carray-sbi_ecall_exts-$(CONFIG_SBI_ECALL_IPI) += ecall_ipi
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libsbi-objs-$(CONFIG_SBI_ECALL_IPI) += sbi_ecall_ipi.o
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carray-sbi_ecall_exts-y += ecall_base
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libsbi-objs-y += sbi_ecall_base.o
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carray-sbi_ecall_exts-$(CONFIG_SBI_ECALL_HSM) += ecall_hsm
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libsbi-objs-$(CONFIG_SBI_ECALL_HSM) += sbi_ecall_hsm.o
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carray-sbi_ecall_exts-$(CONFIG_SBI_ECALL_SRST) += ecall_srst
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libsbi-objs-$(CONFIG_SBI_ECALL_SRST) += sbi_ecall_srst.o
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carray-sbi_ecall_exts-$(CONFIG_SBI_ECALL_SUSP) += ecall_susp
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libsbi-objs-$(CONFIG_SBI_ECALL_SUSP) += sbi_ecall_susp.o
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carray-sbi_ecall_exts-$(CONFIG_SBI_ECALL_PMU) += ecall_pmu
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libsbi-objs-$(CONFIG_SBI_ECALL_PMU) += sbi_ecall_pmu.o
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carray-sbi_ecall_exts-$(CONFIG_SBI_ECALL_DBCN) += ecall_dbcn
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libsbi-objs-$(CONFIG_SBI_ECALL_DBCN) += sbi_ecall_dbcn.o
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carray-sbi_ecall_exts-$(CONFIG_SBI_ECALL_CPPC) += ecall_cppc
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libsbi-objs-$(CONFIG_SBI_ECALL_CPPC) += sbi_ecall_cppc.o
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carray-sbi_ecall_exts-$(CONFIG_SBI_ECALL_FWFT) += ecall_fwft
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libsbi-objs-$(CONFIG_SBI_ECALL_FWFT) += sbi_ecall_fwft.o
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carray-sbi_ecall_exts-$(CONFIG_SBI_ECALL_LEGACY) += ecall_legacy
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libsbi-objs-$(CONFIG_SBI_ECALL_LEGACY) += sbi_ecall_legacy.o
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carray-sbi_ecall_exts-$(CONFIG_SBI_ECALL_VENDOR) += ecall_vendor
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libsbi-objs-$(CONFIG_SBI_ECALL_VENDOR) += sbi_ecall_vendor.o
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carray-sbi_ecall_exts-$(CONFIG_SBI_ECALL_DBTR) += ecall_dbtr
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libsbi-objs-$(CONFIG_SBI_ECALL_DBTR) += sbi_ecall_dbtr.o
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carray-sbi_ecall_exts-$(CONFIG_SBI_ECALL_SSE) += ecall_sse
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libsbi-objs-$(CONFIG_SBI_ECALL_SSE) += sbi_ecall_sse.o
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carray-sbi_ecall_exts-$(CONFIG_SBI_ECALL_MPXY) += ecall_mpxy
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libsbi-objs-$(CONFIG_SBI_ECALL_MPXY) += sbi_ecall_mpxy.o
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libsbi-objs-y += sbi_bitmap.o
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libsbi-objs-y += sbi_bitops.o
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libsbi-objs-y += sbi_console.o
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libsbi-objs-y += sbi_domain_context.o
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libsbi-objs-y += sbi_domain_data.o
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libsbi-objs-y += sbi_domain.o
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libsbi-objs-y += sbi_double_trap.o
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libsbi-objs-y += sbi_emulate_csr.o
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libsbi-objs-y += sbi_fifo.o
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libsbi-objs-y += sbi_fwft.o
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libsbi-objs-y += sbi_hart.o
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libsbi-objs-y += sbi_hart_pmp.o
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libsbi-objs-y += sbi_hart_protection.o
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libsbi-objs-y += sbi_heap.o
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libsbi-objs-y += sbi_math.o
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libsbi-objs-y += sbi_hfence.o
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libsbi-objs-y += sbi_hsm.o
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libsbi-objs-y += sbi_illegal_atomic.o
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libsbi-objs-y += sbi_illegal_insn.o
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libsbi-objs-y += sbi_init.o
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libsbi-objs-y += sbi_ipi.o
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libsbi-objs-y += sbi_irqchip.o
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libsbi-objs-y += sbi_platform.o
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libsbi-objs-y += sbi_pmu.o
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libsbi-objs-y += sbi_dbtr.o
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libsbi-objs-y += sbi_mpxy.o
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libsbi-objs-y += sbi_scratch.o
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libsbi-objs-y += sbi_sse.o
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libsbi-objs-y += sbi_string.o
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libsbi-objs-y += sbi_system.o
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libsbi-objs-y += sbi_timer.o
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libsbi-objs-y += sbi_tlb.o
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libsbi-objs-y += sbi_trap.o
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libsbi-objs-y += sbi_trap_ldst.o
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libsbi-objs-y += sbi_trap_v_ldst.o
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libsbi-objs-y += sbi_unpriv.o
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libsbi-objs-y += sbi_expected_trap.o
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libsbi-objs-y += sbi_cppc.o
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libsbi-objs-$(CC_SUPPORT_VECTOR) += sbi_vector.o
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libsbi-objs-y += sbi_fp.o
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