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

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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 <roy.lin@sifive.com>
Signed-off-by: Roy Lin <roy.lin@sifive.com>
Signed-off-by: Greentime Hu <greentime.hu@sifive.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
This commit is contained in:
Greentime Hu 2023-09-06 09:01:14 +00:00 • committed by Anup Patel
parent 5bd969477f
commit 130e65dd9d
1 changed files with 3 additions and 3 deletions
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6
include/sbi/riscv_fp.h
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@ -84,7 +84,7 @@
#define GET_FFLAGS() csr_read(CSR_FFLAGS)
#define SET_FFLAGS(value) csr_write(CSR_FFLAGS, (value))
#define SET_FS_DIRTY() ((void)0)
#define SET_FS_DIRTY(regs) (regs->mstatus |= MSTATUS_FS)
#define GET_F32_RS1(insn, regs) (GET_F32_REG(insn, 15, regs))
#define GET_F32_RS2(insn, regs) (GET_F32_REG(insn, 20, regs))
@ -93,9 +93,9 @@
#define GET_F64_RS2(insn, regs) (GET_F64_REG(insn, 20, regs))
#define GET_F64_RS3(insn, regs) (GET_F64_REG(insn, 27, regs))
#define SET_F32_RD(insn, regs, val) \
(SET_F32_REG(insn, 7, regs, val), SET_FS_DIRTY())
(SET_F32_REG(insn, 7, regs, val), SET_FS_DIRTY(regs))
#define SET_F64_RD(insn, regs, val) \
(SET_F64_REG(insn, 7, regs, val), SET_FS_DIRTY())
(SET_F64_REG(insn, 7, regs, val), SET_FS_DIRTY(regs))
#define GET_F32_RS2C(insn, regs) (GET_F32_REG(insn, 2, regs))
#define GET_F32_RS2S(insn, regs) (GET_F32_REG(RVC_RS2S(insn), 0, regs))