opensbi.git/include/sbi/riscv_fp.h, branch master

include: sbi: set FS dirty in vsstatus when V=1

2026-06-16T07:01:01Z

According to Privileged ISA 19.2.11: Modifying the floating-point state when V=1 causes both fields (vsstatus.FS and the HS-level sstatus.FS) to be set to 3 (Dirty) Fixes: 130e65dd9d44 ("lib: sbi: Implement SET_FS_DIRTY() to make sure the mstatus FS dirty is set") Signed-off-by: Bo Gan Reviewed-by: Anup Patel Tested-by: Anirudh Srinivasan Link: https://lore.kernel.org/r/20260605113214.242-5-ganboing@gmail.com Signed-off-by: Anup Patel

include: sbi: Add GET_RDS_NUM/SET(_FP32/_FP64)_RDS macros

2026-06-16T07:00:22Z

These macros can be used to decode rd' and set rd' in RVC instructions Signed-off-by: Bo Gan Reviewed-by: Anup Patel Tested-by: Anirudh Srinivasan Link: https://lore.kernel.org/r/20260605113214.242-4-ganboing@gmail.com Signed-off-by: Anup Patel

lib: sbi: Enhance CSR Handling in system_opcode_insn

2024-08-23T08:06:49Z

- Completed TODO in `system_opcode_insn` to ensure CSR read/write instruction handling. - Refactored to use new macros `GET_RS1_NUM` and `GET_CSR_NUM`. - Updated `GET_RM` macro and replaced hardcoded funct3 values with constants (`CSRRW`, `CSRRS`, `CSRRC`, etc.). - Removed redundant `GET_RM` from `riscv_fp.h`. - Improved validation and error handling for CSR instructions. This patch enhances the clarity and correctness of CSR handling in `system_opcode_insn`. Signed-off-by: Dongdong Zhang Reviewed-by: Anup Patel

lib: sbi: Implement SET_FS_DIRTY() to make sure the mstatus FS dirty is set

2023-09-22T05:47:26Z

We found the mstatus.FS status is not set correctly after the SET_F64_REG() and SET_F32_REG(). We should set mstatus.FS dirty after we emulate the FPU instructions. Co-developed-by: Roy Lin Signed-off-by: Roy Lin Signed-off-by: Greentime Hu Reviewed-by: Anup Patel

lib: sbi: Fix GET_F64_REG inline assembly

2021-06-12T04:23:33Z

Current, GET_F64_REG() macro does not generate correct inline assembly for the RV32 systems. This patch provides separate definitions of GET_F64_REG() macro for RV32 and RV64 systems. Signed-off-by: Charles Papon Signed-off-by: Anup Patel

lib: Allow compiling without FP support

2019-07-26T10:19:49Z

Currently, we mandate 'F' and 'D' extension in riscv_fp.h so that misaligned load/store emulation has access to FP registers. The above is too restrictive and we should certainly allow compilation for soft-FP toolchains and explicit PLATFORM_RISCV_ISA not having 'F' and 'D' extensions. This patch extends riscv_fp.h and misaligned load/store emulation to allow compiling OpenSBI without FP support. Signed-off-by: Anup Patel Reviewed-by: Bin Meng

all: run clang-format and update checked-in files

2019-04-24T04:19:46Z

Noisy commit, no functional changes. Generated with an current upstream clang-format and: clang-format -i $(find . -name \*.[ch]) Signed-off-by: Olof Johansson

lib: Use CSR_ instead of for csr_*()

2019-02-14T04:01:18Z

Some older toolchains may not have all the csr's defined. Update all the csr functions to use the CSR_ #define values instead of the toolchain defined values. Suggested-by: Olof Johansson Signed-off-by: Atish Patra

all: Update copyright header in all files

2019-01-24T08:37:47Z

This patch updates copyright header in all files as follows: 1. Makes "SPDX-License-Identifier: BSD-2-Clause" as first line 2. Change copyright year to 2019 for Western Digital Signed-off-by: Anup Patel

include: Add hard FP access macros and defines

2019-01-03T22:21:08Z

This patch adds hardware floating-point (hard FP) access macros and defines. Signed-off-by: Anup Patel