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lib: Allow compiling without FP support

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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 <anup.patel@wdc.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
This commit is contained in:
Anup Patel
2019-07-25 05:05:03 +00:00
committed by Anup Patel
parent 85546a5477
commit 0f18b3fe0a
3 changed files with 16 additions and 13 deletions
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6
include/sbi/riscv_fp.h
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@@ -73,10 +73,6 @@
#define SET_FS_DIRTY() ((void)0)
#else
#error "Floating point emulation not supported.\n"
#endif
#define GET_F32_RS1(insn, regs) (GET_F32_REG(insn, 15, regs))
#define GET_F32_RS2(insn, regs) (GET_F32_REG(insn, 20, regs))
#define GET_F32_RS3(insn, regs) (GET_F32_REG(insn, 27, regs))
@@ -94,3 +90,5 @@
#define GET_F64_RS2S(insn, regs) (GET_F64_REG(RVC_RS2S(insn), 0, regs))
#endif
#endif