[PATCH 1/1] lib: sbi_misaligned_ldst: Add handling of vector load/store
Anup Patel
anup at brainfault.org
Wed Nov 27 06:03:55 PST 2024
On Wed, Oct 16, 2024 at 4:16 PM Nylon Chen <nylon.chen at sifive.com> wrote:
>
> Add exception handling vector instructions from
>
> the vector extension to the sbi_misaligned_ldst library.
>
> This implementation references the misaligned_vec_ldst
> implementation in the riscv-pk project.
>
> Co-developed-by: Zong Li <zong.li at sifive.com>
> Signed-off-by: Zong Li <zong.li at sifive.com>
> Signed-off-by: Nylon Chen <nylon.chen at sifive.com>
> Reviewed-by: Andy Chiu <andy.chiu at sifive.com>
> ---
> Makefile | 15 +-
> include/sbi/riscv_encoding.h | 385 ++++++++++++++++++++++++++++++++++-
> include/sbi/sbi_trap_ldst.h | 9 +
> lib/sbi/Kconfig | 4 +
> lib/sbi/objects.mk | 1 +
> lib/sbi/sbi_trap_ldst.c | 23 ++-
> lib/sbi/sbi_trap_v_ldst.c | 341 +++++++++++++++++++++++++++++++
> 7 files changed, 766 insertions(+), 12 deletions(-)
> create mode 100644 lib/sbi/sbi_trap_v_ldst.c
>
> diff --git a/Makefile b/Makefile
> index f0012f6..20cae08 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -189,6 +189,9 @@ CC_SUPPORT_STRICT_ALIGN := $(shell $(CC) $(CLANG_TARGET) $(RELAX_FLAG) -nostdlib
> # Check whether the assembler and the compiler support the Zicsr and Zifencei extensions
> CC_SUPPORT_ZICSR_ZIFENCEI := $(shell $(CC) $(CLANG_TARGET) $(RELAX_FLAG) -nostdlib -march=rv$(OPENSBI_CC_XLEN)imafd_zicsr_zifencei -x c /dev/null -o /dev/null 2>&1 | grep "zicsr\|zifencei" > /dev/null && echo n || echo y)
>
> +# Check whether the assembler and the compiler support the Vector extension
> +CC_SUPPORT_VECT := $(shell echo | $(CC) -dM -E -march=rv$(OPENSBI_CC_XLEN)gv - | grep -q riscv.*vector && echo y || echo n)
> +
> ifneq ($(OPENSBI_LD_PIE),y)
> $(error Your linker does not support creating PIEs, opensbi requires this.)
> endif
> @@ -294,10 +297,16 @@ ifndef PLATFORM_RISCV_ABI
> endif
> ifndef PLATFORM_RISCV_ISA
> ifneq ($(PLATFORM_RISCV_TOOLCHAIN_DEFAULT), 1)
> - ifeq ($(CC_SUPPORT_ZICSR_ZIFENCEI), y)
> - PLATFORM_RISCV_ISA = rv$(PLATFORM_RISCV_XLEN)imafdc_zicsr_zifencei
> + PLATFORM_RISCV_ISA := rv$(PLATFORM_RISCV_XLEN)imafdc
> +ifdef CONFIG_SUPPORT_VECTOR
Let's drop this config option and the corresponding change in the Kconfig file.
> + ifeq ($(CC_SUPPORT_VECT), y)
> + PLATFORM_RISCV_ISA := $(PLATFORM_RISCV_ISA)v
> else
> - PLATFORM_RISCV_ISA = rv$(PLATFORM_RISCV_XLEN)imafdc
> + $(warning Vector extension requested but not supported by the compiler)
> + endif
> +endif
> + ifeq ($(CC_SUPPORT_ZICSR_ZIFENCEI), y)
> + PLATFORM_RISCV_ISA := $(PLATFORM_RISCV_ISA)_zicsr_zifencei
> endif
> else
> PLATFORM_RISCV_ISA = $(OPENSBI_CC_ISA)
> diff --git a/include/sbi/riscv_encoding.h b/include/sbi/riscv_encoding.h
> index 980abdb..bf58a8d 100644
> --- a/include/sbi/riscv_encoding.h
> +++ b/include/sbi/riscv_encoding.h
> @@ -756,6 +756,12 @@
> #define CSR_MVIPH 0x319
> #define CSR_MIPH 0x354
>
> +/* Vector extension registers */
> +#define CSR_VSTART 0x8
> +#define CSR_VL 0xc20
> +#define CSR_VTYPE 0xc21
> +#define CSR_VLENB 0xc22
> +
> /* ===== Trap/Exception Causes ===== */
>
> #define CAUSE_MISALIGNED_FETCH 0x0
> @@ -883,11 +889,364 @@
> #define INSN_MASK_FENCE_TSO 0xffffffff
> #define INSN_MATCH_FENCE_TSO 0x8330000f
>
> +#define INSN_MASK_VECTOR_UNIT_STRIDE 0xfdf0707f
> +#define INSN_MASK_VECTOR_FAULT_ONLY_FIRST 0xfdf0707f
> +#define INSN_MASK_VECTOR_STRIDE 0xfc00707f
> +#define INSN_MASK_VECTOR_WHOLE_REG 0xfff0707f
> +#define INSN_MASK_VECTOR_INDEXED 0xfc00707f
> +
> +#define INSN_MATCH_VLUXSEG(n, bits) ((((n) - 1) << 29) | 0x04000007 | \
> + ((bits) == 16 ? 5 : (bits) == 32 ? 6 : 7) << 12)
> +#define INSN_MATCH_VSUXSEG(n, bits) ((((n) - 1) << 29) | 0x04000027 | \
> + ((bits) == 16 ? 5 : (bits) == 32 ? 6 : 7) << 12)
> +#define INSN_MATCH_VLOXSEG(n, bits) ((((n) - 1) << 29) | 0x0c000007 | \
> + ((bits) == 16 ? 5 : (bits) == 32 ? 6 : 7) << 12)
> +#define INSN_MATCH_VSOXSEG(n, bits) ((((n) - 1) << 29) | 0x0c000027 | \
> + ((bits) == 16 ? 5 : (bits) == 32 ? 6 : 7) << 12)
> +#define INSN_MATCH_VLSSEG(n, bits) ((((n) - 1) << 29) | 0x08000007 | \
> + ((bits) == 16 ? 5 : (bits) == 32 ? 6 : 7) << 12)
> +#define INSN_MATCH_VSSSEG(n, bits) ((((n) - 1) << 29) | 0x08000027 | \
> + ((bits) == 16 ? 5 : (bits) == 32 ? 6 : 7) << 12)
> +#define INSN_MATCH_VSSEG(n, bits) ((((n) - 1) << 29) | 0x00004027 | \
> + ((bits) == 16 ? 5 : (bits) == 32 ? 6 : 7) << 12)
> +#define INSN_MATCH_VLSEG(n, bits) ((((n) - 1) << 29) | 0x00004007 | \
> + ((bits) == 16 ? 5 : (bits) == 32 ? 6 : 7) << 12)
> +#define INSN_MATCH_VLSEGFF(n, bits) ((((n) - 1) << 29) | 0x1000007 | \
> + ((bits) == 16 ? 5 : (bits) == 32 ? 6 : 7) << 12)
> +
> +#define INSN_MATCH_VLE16V 0x00005007
> +#define INSN_MATCH_VLE32V 0x00006007
> +#define INSN_MATCH_VLE64V 0x00007007
> +#define INSN_MATCH_VSE16V 0x00005027
> +#define INSN_MATCH_VSE32V 0x00006027
> +#define INSN_MATCH_VSE64V 0x00007027
> +#define INSN_MATCH_VLSE16V 0x08005007
> +#define INSN_MATCH_VLSE32V 0x08006007
> +#define INSN_MATCH_VLSE64V 0x08007007
> +#define INSN_MATCH_VSSE16V 0x08005027
> +#define INSN_MATCH_VSSE32V 0x08006027
> +#define INSN_MATCH_VSSE64V 0x08007027
> +#define INSN_MATCH_VLOXEI16V 0x0c005007
> +#define INSN_MATCH_VLOXEI32V 0x0c006007
> +#define INSN_MATCH_VLOXEI64V 0x0c007007
> +#define INSN_MATCH_VSOXEI16V 0x0c005027
> +#define INSN_MATCH_VSOXEI32V 0x0c006027
> +#define INSN_MATCH_VSOXEI64V 0x0c007027
> +#define INSN_MATCH_VLUXEI16V 0x04005007
> +#define INSN_MATCH_VLUXEI32V 0x04006007
> +#define INSN_MATCH_VLUXEI64V 0x04007007
> +#define INSN_MATCH_VSUXEI16V 0x04005027
> +#define INSN_MATCH_VSUXEI32V 0x04006027
> +#define INSN_MATCH_VSUXEI64V 0x04007027
> +#define INSN_MATCH_VLE16FFV 0x01005007
> +#define INSN_MATCH_VLE32FFV 0x01006007
> +#define INSN_MATCH_VLE64FFV 0x01007007
> +#define INSN_MATCH_VL1RE8V 0x02800007
> +#define INSN_MATCH_VL1RE16V 0x02805007
> +#define INSN_MATCH_VL1RE32V 0x02806007
> +#define INSN_MATCH_VL1RE64V 0x02807007
> +#define INSN_MATCH_VL2RE8V 0x22800007
> +#define INSN_MATCH_VL2RE16V 0x22805007
> +#define INSN_MATCH_VL2RE32V 0x22806007
> +#define INSN_MATCH_VL2RE64V 0x22807007
> +#define INSN_MATCH_VL4RE8V 0x62800007
> +#define INSN_MATCH_VL4RE16V 0x62805007
> +#define INSN_MATCH_VL4RE32V 0x62806007
> +#define INSN_MATCH_VL4RE64V 0x62807007
> +#define INSN_MATCH_VL8RE8V 0xe2800007
> +#define INSN_MATCH_VL8RE16V 0xe2805007
> +#define INSN_MATCH_VL8RE32V 0xe2806007
> +#define INSN_MATCH_VL8RE64V 0xe2807007
> +#define INSN_MATCH_VS1RV 0x02800027
> +#define INSN_MATCH_VS2RV 0x22800027
> +#define INSN_MATCH_VS4RV 0x62800027
> +#define INSN_MATCH_VS8RV 0xe2800027
> +
> +#define INSN_MASK_VECTOR_LOAD_STORE 0x7f
> +#define INSN_MATCH_VECTOR_LOAD 0x07
> +#define INSN_MATCH_VECTOR_STORE 0x27
> +
> +#define IS_VECTOR_LOAD_STORE(insn) \
> + ((((insn) & INSN_MASK_VECTOR_LOAD_STORE) == INSN_MATCH_VECTOR_LOAD) || \
> + (((insn) & INSN_MASK_VECTOR_LOAD_STORE) == INSN_MATCH_VECTOR_STORE))
> +
> +#define IS_VECTOR_INSN_MATCH(insn, match, mask) \
> + (((insn) & (mask)) == ((match) & (mask)))
> +
> +#define IS_UNIT_STRIDE_MATCH(insn, match) \
> + IS_VECTOR_INSN_MATCH(insn, match, INSN_MASK_VECTOR_UNIT_STRIDE)
> +
> +#define IS_STRIDE_MATCH(insn, match) \
> + IS_VECTOR_INSN_MATCH(insn, match, INSN_MASK_VECTOR_STRIDE)
> +
> +#define IS_INDEXED_MATCH(insn, match) \
> + IS_VECTOR_INSN_MATCH(insn, match, INSN_MASK_VECTOR_INDEXED)
> +
> +#define IS_FAULT_ONLY_FIRST_MATCH(insn, match) \
> + IS_VECTOR_INSN_MATCH(insn, match, INSN_MASK_VECTOR_FAULT_ONLY_FIRST)
> +
> +#define IS_WHOLE_REG_MATCH(insn, match) \
> + IS_VECTOR_INSN_MATCH(insn, match, INSN_MASK_VECTOR_WHOLE_REG)
> +
> +#define IS_UNIT_STRIDE_LOAD(insn) ( \
> + IS_UNIT_STRIDE_MATCH(insn, INSN_MATCH_VLE16V) || \
> + IS_UNIT_STRIDE_MATCH(insn, INSN_MATCH_VLE32V) || \
> + IS_UNIT_STRIDE_MATCH(insn, INSN_MATCH_VLE64V) || \
> + IS_UNIT_STRIDE_MATCH(insn, INSN_MATCH_VLSEG(2, 16)) || \
> + IS_UNIT_STRIDE_MATCH(insn, INSN_MATCH_VLSEG(3, 16)) || \
> + IS_UNIT_STRIDE_MATCH(insn, INSN_MATCH_VLSEG(4, 16)) || \
> + IS_UNIT_STRIDE_MATCH(insn, INSN_MATCH_VLSEG(5, 16)) || \
> + IS_UNIT_STRIDE_MATCH(insn, INSN_MATCH_VLSEG(6, 16)) || \
> + IS_UNIT_STRIDE_MATCH(insn, INSN_MATCH_VLSEG(7, 16)) || \
> + IS_UNIT_STRIDE_MATCH(insn, INSN_MATCH_VLSEG(8, 16)) || \
> + IS_UNIT_STRIDE_MATCH(insn, INSN_MATCH_VLSEG(2, 32)) || \
> + IS_UNIT_STRIDE_MATCH(insn, INSN_MATCH_VLSEG(3, 32)) || \
> + IS_UNIT_STRIDE_MATCH(insn, INSN_MATCH_VLSEG(4, 32)) || \
> + IS_UNIT_STRIDE_MATCH(insn, INSN_MATCH_VLSEG(5, 32)) || \
> + IS_UNIT_STRIDE_MATCH(insn, INSN_MATCH_VLSEG(6, 32)) || \
> + IS_UNIT_STRIDE_MATCH(insn, INSN_MATCH_VLSEG(7, 32)) || \
> + IS_UNIT_STRIDE_MATCH(insn, INSN_MATCH_VLSEG(8, 32)) || \
> + IS_UNIT_STRIDE_MATCH(insn, INSN_MATCH_VLSEG(2, 64)) || \
> + IS_UNIT_STRIDE_MATCH(insn, INSN_MATCH_VLSEG(3, 64)) || \
> + IS_UNIT_STRIDE_MATCH(insn, INSN_MATCH_VLSEG(4, 64)) || \
> + IS_UNIT_STRIDE_MATCH(insn, INSN_MATCH_VLSEG(5, 64)) || \
> + IS_UNIT_STRIDE_MATCH(insn, INSN_MATCH_VLSEG(6, 64)) || \
> + IS_UNIT_STRIDE_MATCH(insn, INSN_MATCH_VLSEG(7, 64)) || \
> + IS_UNIT_STRIDE_MATCH(insn, INSN_MATCH_VLSEG(8, 64)))
> +
> +#define IS_UNIT_STRIDE_STORE(insn) ( \
> + IS_UNIT_STRIDE_MATCH(insn, INSN_MATCH_VSE16V) || \
> + IS_UNIT_STRIDE_MATCH(insn, INSN_MATCH_VSE32V) || \
> + IS_UNIT_STRIDE_MATCH(insn, INSN_MATCH_VSE64V) || \
> + IS_UNIT_STRIDE_MATCH(insn, INSN_MATCH_VSSEG(2, 16)) || \
> + IS_UNIT_STRIDE_MATCH(insn, INSN_MATCH_VSSEG(3, 16)) || \
> + IS_UNIT_STRIDE_MATCH(insn, INSN_MATCH_VSSEG(4, 16)) || \
> + IS_UNIT_STRIDE_MATCH(insn, INSN_MATCH_VSSEG(5, 16)) || \
> + IS_UNIT_STRIDE_MATCH(insn, INSN_MATCH_VSSEG(6, 16)) || \
> + IS_UNIT_STRIDE_MATCH(insn, INSN_MATCH_VSSEG(7, 16)) || \
> + IS_UNIT_STRIDE_MATCH(insn, INSN_MATCH_VSSEG(8, 16)) || \
> + IS_UNIT_STRIDE_MATCH(insn, INSN_MATCH_VSSEG(2, 32)) || \
> + IS_UNIT_STRIDE_MATCH(insn, INSN_MATCH_VSSEG(3, 32)) || \
> + IS_UNIT_STRIDE_MATCH(insn, INSN_MATCH_VSSEG(4, 32)) || \
> + IS_UNIT_STRIDE_MATCH(insn, INSN_MATCH_VSSEG(5, 32)) || \
> + IS_UNIT_STRIDE_MATCH(insn, INSN_MATCH_VSSEG(6, 32)) || \
> + IS_UNIT_STRIDE_MATCH(insn, INSN_MATCH_VSSEG(7, 32)) || \
> + IS_UNIT_STRIDE_MATCH(insn, INSN_MATCH_VSSEG(8, 32)) || \
> + IS_UNIT_STRIDE_MATCH(insn, INSN_MATCH_VSSEG(2, 64)) || \
> + IS_UNIT_STRIDE_MATCH(insn, INSN_MATCH_VSSEG(3, 64)) || \
> + IS_UNIT_STRIDE_MATCH(insn, INSN_MATCH_VSSEG(4, 64)) || \
> + IS_UNIT_STRIDE_MATCH(insn, INSN_MATCH_VSSEG(5, 64)) || \
> + IS_UNIT_STRIDE_MATCH(insn, INSN_MATCH_VSSEG(6, 64)) || \
> + IS_UNIT_STRIDE_MATCH(insn, INSN_MATCH_VSSEG(7, 64)) || \
> + IS_UNIT_STRIDE_MATCH(insn, INSN_MATCH_VSSEG(8, 64)))
> +
> +#define IS_STRIDE_LOAD(insn) ( \
> + IS_STRIDE_MATCH(insn, INSN_MATCH_VLSE16V) || \
> + IS_STRIDE_MATCH(insn, INSN_MATCH_VLSE32V) || \
> + IS_STRIDE_MATCH(insn, INSN_MATCH_VLSE64V) || \
> + IS_STRIDE_MATCH(insn, INSN_MATCH_VLSSEG(2, 16)) || \
> + IS_STRIDE_MATCH(insn, INSN_MATCH_VLSSEG(3, 16)) || \
> + IS_STRIDE_MATCH(insn, INSN_MATCH_VLSSEG(4, 16)) || \
> + IS_STRIDE_MATCH(insn, INSN_MATCH_VLSSEG(5, 16)) || \
> + IS_STRIDE_MATCH(insn, INSN_MATCH_VLSSEG(6, 16)) || \
> + IS_STRIDE_MATCH(insn, INSN_MATCH_VLSSEG(7, 16)) || \
> + IS_STRIDE_MATCH(insn, INSN_MATCH_VLSSEG(8, 16)) || \
> + IS_STRIDE_MATCH(insn, INSN_MATCH_VLSSEG(2, 32)) || \
> + IS_STRIDE_MATCH(insn, INSN_MATCH_VLSSEG(3, 32)) || \
> + IS_STRIDE_MATCH(insn, INSN_MATCH_VLSSEG(4, 32)) || \
> + IS_STRIDE_MATCH(insn, INSN_MATCH_VLSSEG(5, 32)) || \
> + IS_STRIDE_MATCH(insn, INSN_MATCH_VLSSEG(6, 32)) || \
> + IS_STRIDE_MATCH(insn, INSN_MATCH_VLSSEG(7, 32)) || \
> + IS_STRIDE_MATCH(insn, INSN_MATCH_VLSSEG(8, 32)) || \
> + IS_STRIDE_MATCH(insn, INSN_MATCH_VLSSEG(2, 64)) || \
> + IS_STRIDE_MATCH(insn, INSN_MATCH_VLSSEG(3, 64)) || \
> + IS_STRIDE_MATCH(insn, INSN_MATCH_VLSSEG(4, 64)) || \
> + IS_STRIDE_MATCH(insn, INSN_MATCH_VLSSEG(5, 64)) || \
> + IS_STRIDE_MATCH(insn, INSN_MATCH_VLSSEG(6, 64)) || \
> + IS_STRIDE_MATCH(insn, INSN_MATCH_VLSSEG(7, 64)) || \
> + IS_STRIDE_MATCH(insn, INSN_MATCH_VLSSEG(8, 64)))
> +
> +#define IS_STRIDE_STORE(insn) ( \
> + IS_STRIDE_MATCH(insn, INSN_MATCH_VSSE16V) || \
> + IS_STRIDE_MATCH(insn, INSN_MATCH_VSSE32V) || \
> + IS_STRIDE_MATCH(insn, INSN_MATCH_VSSE64V) || \
> + IS_STRIDE_MATCH(insn, INSN_MATCH_VSSSEG(2, 16)) || \
> + IS_STRIDE_MATCH(insn, INSN_MATCH_VSSSEG(3, 16)) || \
> + IS_STRIDE_MATCH(insn, INSN_MATCH_VSSSEG(4, 16)) || \
> + IS_STRIDE_MATCH(insn, INSN_MATCH_VSSSEG(5, 16)) || \
> + IS_STRIDE_MATCH(insn, INSN_MATCH_VSSSEG(6, 16)) || \
> + IS_STRIDE_MATCH(insn, INSN_MATCH_VSSSEG(7, 16)) || \
> + IS_STRIDE_MATCH(insn, INSN_MATCH_VSSSEG(8, 16)) || \
> + IS_STRIDE_MATCH(insn, INSN_MATCH_VSSSEG(2, 32)) || \
> + IS_STRIDE_MATCH(insn, INSN_MATCH_VSSSEG(3, 32)) || \
> + IS_STRIDE_MATCH(insn, INSN_MATCH_VSSSEG(4, 32)) || \
> + IS_STRIDE_MATCH(insn, INSN_MATCH_VSSSEG(5, 32)) || \
> + IS_STRIDE_MATCH(insn, INSN_MATCH_VSSSEG(6, 32)) || \
> + IS_STRIDE_MATCH(insn, INSN_MATCH_VSSSEG(7, 32)) || \
> + IS_STRIDE_MATCH(insn, INSN_MATCH_VSSSEG(8, 32)) || \
> + IS_STRIDE_MATCH(insn, INSN_MATCH_VSSSEG(2, 64)) || \
> + IS_STRIDE_MATCH(insn, INSN_MATCH_VSSSEG(3, 64)) || \
> + IS_STRIDE_MATCH(insn, INSN_MATCH_VSSSEG(4, 64)) || \
> + IS_STRIDE_MATCH(insn, INSN_MATCH_VSSSEG(5, 64)) || \
> + IS_STRIDE_MATCH(insn, INSN_MATCH_VSSSEG(6, 64)) || \
> + IS_STRIDE_MATCH(insn, INSN_MATCH_VSSSEG(7, 64)) || \
> + IS_STRIDE_MATCH(insn, INSN_MATCH_VSSSEG(8, 64)))
> +
> +#define IS_INDEXED_LOAD(insn) ( \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VLOXEI16V) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VLOXEI32V) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VLOXEI64V) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VLUXEI16V) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VLUXEI32V) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VLUXEI64V) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VLUXSEG(2, 16)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VLUXSEG(3, 16)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VLUXSEG(4, 16)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VLUXSEG(5, 16)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VLUXSEG(6, 16)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VLUXSEG(7, 16)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VLUXSEG(8, 16)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VLUXSEG(2, 32)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VLUXSEG(3, 32)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VLUXSEG(4, 32)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VLUXSEG(5, 32)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VLUXSEG(6, 32)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VLUXSEG(7, 32)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VLUXSEG(8, 32)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VLUXSEG(2, 64)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VLUXSEG(3, 64)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VLUXSEG(4, 64)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VLUXSEG(5, 64)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VLUXSEG(6, 64)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VLUXSEG(7, 64)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VLUXSEG(8, 64)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VLOXSEG(2, 16)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VLOXSEG(3, 16)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VLOXSEG(4, 16)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VLOXSEG(5, 16)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VLOXSEG(6, 16)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VLOXSEG(7, 16)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VLOXSEG(8, 16)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VLOXSEG(2, 32)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VLOXSEG(3, 32)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VLOXSEG(4, 32)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VLOXSEG(5, 32)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VLOXSEG(6, 32)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VLOXSEG(7, 32)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VLOXSEG(8, 32)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VLOXSEG(2, 64)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VLOXSEG(3, 64)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VLOXSEG(4, 64)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VLOXSEG(5, 64)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VLOXSEG(6, 64)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VLOXSEG(7, 64)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VLOXSEG(8, 64)))
> +
> +#define IS_INDEXED_STORE(insn) ( \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VSUXEI16V) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VSUXEI32V) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VSUXEI64V) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VSOXEI16V) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VSOXEI32V) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VSOXEI64V) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VSUXSEG(2, 16)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VSUXSEG(3, 16)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VSUXSEG(4, 16)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VSUXSEG(5, 16)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VSUXSEG(6, 16)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VSUXSEG(7, 16)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VSUXSEG(8, 16)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VSUXSEG(2, 32)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VSUXSEG(3, 32)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VSUXSEG(4, 32)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VSUXSEG(5, 32)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VSUXSEG(6, 32)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VSUXSEG(7, 32)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VSUXSEG(8, 32)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VSUXSEG(2, 64)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VSUXSEG(3, 64)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VSUXSEG(4, 64)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VSUXSEG(5, 64)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VSUXSEG(6, 64)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VSUXSEG(7, 64)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VSUXSEG(8, 64)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VSOXSEG(2, 16)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VSOXSEG(3, 16)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VSOXSEG(4, 16)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VSOXSEG(5, 16)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VSOXSEG(6, 16)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VSOXSEG(7, 16)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VSOXSEG(8, 16)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VSOXSEG(2, 32)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VSOXSEG(3, 32)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VSOXSEG(4, 32)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VSOXSEG(5, 32)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VSOXSEG(6, 32)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VSOXSEG(7, 32)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VSOXSEG(8, 32)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VSOXSEG(2, 64)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VSOXSEG(3, 64)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VSOXSEG(4, 64)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VSOXSEG(5, 64)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VSOXSEG(6, 64)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VSOXSEG(7, 64)) || \
> + IS_INDEXED_MATCH(insn, INSN_MATCH_VSOXSEG(8, 64)))
> +
> +#define IS_FAULT_ONLY_FIRST_LOAD(insn) ( \
> + IS_FAULT_ONLY_FIRST_MATCH(insn, INSN_MATCH_VLE16FFV) || \
> + IS_FAULT_ONLY_FIRST_MATCH(insn, INSN_MATCH_VLE32FFV) || \
> + IS_FAULT_ONLY_FIRST_MATCH(insn, INSN_MATCH_VLE64FFV) || \
> + IS_FAULT_ONLY_FIRST_MATCH(insn, INSN_MATCH_VLSEGFF(2, 16)) || \
> + IS_FAULT_ONLY_FIRST_MATCH(insn, INSN_MATCH_VLSEGFF(3, 16)) || \
> + IS_FAULT_ONLY_FIRST_MATCH(insn, INSN_MATCH_VLSEGFF(4, 16)) || \
> + IS_FAULT_ONLY_FIRST_MATCH(insn, INSN_MATCH_VLSEGFF(5, 16)) || \
> + IS_FAULT_ONLY_FIRST_MATCH(insn, INSN_MATCH_VLSEGFF(6, 16)) || \
> + IS_FAULT_ONLY_FIRST_MATCH(insn, INSN_MATCH_VLSEGFF(7, 16)) || \
> + IS_FAULT_ONLY_FIRST_MATCH(insn, INSN_MATCH_VLSEGFF(8, 16)) || \
> + IS_FAULT_ONLY_FIRST_MATCH(insn, INSN_MATCH_VLSEGFF(2, 32)) || \
> + IS_FAULT_ONLY_FIRST_MATCH(insn, INSN_MATCH_VLSEGFF(3, 32)) || \
> + IS_FAULT_ONLY_FIRST_MATCH(insn, INSN_MATCH_VLSEGFF(4, 32)) || \
> + IS_FAULT_ONLY_FIRST_MATCH(insn, INSN_MATCH_VLSEGFF(5, 32)) || \
> + IS_FAULT_ONLY_FIRST_MATCH(insn, INSN_MATCH_VLSEGFF(6, 32)) || \
> + IS_FAULT_ONLY_FIRST_MATCH(insn, INSN_MATCH_VLSEGFF(7, 32)) || \
> + IS_FAULT_ONLY_FIRST_MATCH(insn, INSN_MATCH_VLSEGFF(8, 32)) || \
> + IS_FAULT_ONLY_FIRST_MATCH(insn, INSN_MATCH_VLSEGFF(2, 64)) || \
> + IS_FAULT_ONLY_FIRST_MATCH(insn, INSN_MATCH_VLSEGFF(3, 64)) || \
> + IS_FAULT_ONLY_FIRST_MATCH(insn, INSN_MATCH_VLSEGFF(4, 64)) || \
> + IS_FAULT_ONLY_FIRST_MATCH(insn, INSN_MATCH_VLSEGFF(5, 64)) || \
> + IS_FAULT_ONLY_FIRST_MATCH(insn, INSN_MATCH_VLSEGFF(6, 64)) || \
> + IS_FAULT_ONLY_FIRST_MATCH(insn, INSN_MATCH_VLSEGFF(7, 64)) || \
> + IS_FAULT_ONLY_FIRST_MATCH(insn, INSN_MATCH_VLSEGFF(8, 64)))
> +
> + #define IS_WHOLE_REG_LOAD(insn) ( \
> + IS_WHOLE_REG_MATCH(insn, INSN_MATCH_VL1RE8V) || \
> + IS_WHOLE_REG_MATCH(insn, INSN_MATCH_VL1RE16V) || \
> + IS_WHOLE_REG_MATCH(insn, INSN_MATCH_VL1RE32V) || \
> + IS_WHOLE_REG_MATCH(insn, INSN_MATCH_VL1RE64V) || \
> + IS_WHOLE_REG_MATCH(insn, INSN_MATCH_VL2RE8V) || \
> + IS_WHOLE_REG_MATCH(insn, INSN_MATCH_VL2RE16V) || \
> + IS_WHOLE_REG_MATCH(insn, INSN_MATCH_VL2RE32V) || \
> + IS_WHOLE_REG_MATCH(insn, INSN_MATCH_VL2RE64V) || \
> + IS_WHOLE_REG_MATCH(insn, INSN_MATCH_VL4RE8V) || \
> + IS_WHOLE_REG_MATCH(insn, INSN_MATCH_VL4RE16V) || \
> + IS_WHOLE_REG_MATCH(insn, INSN_MATCH_VL4RE32V) || \
> + IS_WHOLE_REG_MATCH(insn, INSN_MATCH_VL4RE64V) || \
> + IS_WHOLE_REG_MATCH(insn, INSN_MATCH_VL8RE8V) || \
> + IS_WHOLE_REG_MATCH(insn, INSN_MATCH_VL8RE16V) || \
> + IS_WHOLE_REG_MATCH(insn, INSN_MATCH_VL8RE32V) || \
> + IS_WHOLE_REG_MATCH(insn, INSN_MATCH_VL8RE64V))
> +
> +#define IS_WHOLE_REG_STORE(insn) ( \
> + IS_WHOLE_REG_MATCH(insn, INSN_MATCH_VS1RV) || \
> + IS_WHOLE_REG_MATCH(insn, INSN_MATCH_VS2RV) || \
> + IS_WHOLE_REG_MATCH(insn, INSN_MATCH_VS4RV) || \
> + IS_WHOLE_REG_MATCH(insn, INSN_MATCH_VS8RV))
> +
> +
> #if __riscv_xlen == 64
>
> /* 64-bit read for VS-stage address translation (RV64) */
> #define INSN_PSEUDO_VS_LOAD 0x00003000
> -
> /* 64-bit write for VS-stage address translation (RV64) */
> #define INSN_PSEUDO_VS_STORE 0x00003020
>
> @@ -903,6 +1262,12 @@
> #error "Unexpected __riscv_xlen"
> #endif
>
> +#define VM_MASK 0x1
> +#define VIEW_MASK 0x3
> +#define VSEW_MASK 0x3
> +#define VLMUL_MASK 0x7
> +#define VD_MASK 0x1f
> +#define VS2_MASK 0x1f
> #define INSN_16BIT_MASK 0x3
> #define INSN_32BIT_MASK 0x1c
>
> @@ -921,6 +1286,12 @@
> #endif
> #define REGBYTES (1 << LOG_REGBYTES)
>
> +#define SH_VSEW 3
> +#define SH_VIEW 12
> +#define SH_VD 7
> +#define SH_VS2 20
> +#define SH_VM 25
> +#define SH_MEW 28
> #define SH_RD 7
> #define SH_RS1 15
> #define SH_RS2 20
> @@ -974,6 +1345,18 @@
> #define IMM_S(insn) (((s32)(insn) >> 25 << 5) | \
> (s32)(((insn) >> 7) & 0x1f))
>
> +#define IS_MASKED(insn) (((insn >> SH_VM) & VM_MASK) == 0)
> +#define GET_VD(insn) ((insn >> SH_VD) & VD_MASK)
> +#define GET_VS2(insn) ((insn >> SH_VS2) & VS2_MASK)
> +#define GET_VIEW(insn) (((insn) >> SH_VIEW) & VIEW_MASK)
> +#define GET_MEW(insn) (((insn) >> SH_MEW) & 1)
> +#define GET_VSEW(vtype) (((vtype) >> SH_VSEW) & VSEW_MASK)
> +#define GET_VLMUL(vtype) ((vtype) & VLMUL_MASK)
> +#define GET_LEN(view) (1UL << (view))
> +#define GET_NF(insn) (1 + ((insn >> 29) & 7))
> +#define GET_VEMUL(vlmul, view, vsew) ((vlmul + view - vsew) & 7)
> +#define GET_EMUL(vemul) (1UL << ((vemul) >= 4 ? 0 : (vemul)))
> +
> #define MASK_FUNCT3 0x7000
> #define MASK_RS1 0xf8000
> #define MASK_CSR 0xfff00000
> diff --git a/include/sbi/sbi_trap_ldst.h b/include/sbi/sbi_trap_ldst.h
> index 8aee316..a6a6c75 100644
> --- a/include/sbi/sbi_trap_ldst.h
> +++ b/include/sbi/sbi_trap_ldst.h
> @@ -28,4 +28,13 @@ int sbi_load_access_handler(struct sbi_trap_context *tcntx);
>
> int sbi_store_access_handler(struct sbi_trap_context *tcntx);
>
> +ulong sbi_misaligned_tinst_fixup(ulong orig_tinst, ulong new_tinst,
> + ulong addr_offset);
> +
> +int sbi_misaligned_v_ld_emulator(int rlen, union sbi_ldst_data *out_val,
> + struct sbi_trap_context *tcntx);
> +
> +int sbi_misaligned_v_st_emulator(int wlen, union sbi_ldst_data in_val,
> + struct sbi_trap_context *tcntx);
> +
> #endif
> diff --git a/lib/sbi/Kconfig b/lib/sbi/Kconfig
> index bd8ba2b..f4427fd 100644
> --- a/lib/sbi/Kconfig
> +++ b/lib/sbi/Kconfig
> @@ -66,4 +66,8 @@ config SBI_ECALL_SSE
> bool "SSE extension"
> default y
>
> +config SUPPORT_VECTOR
> + bool "Enable vector extension"
> + default n
> +
> endmenu
> diff --git a/lib/sbi/objects.mk b/lib/sbi/objects.mk
> index 535aa70..9dbe218 100644
> --- a/lib/sbi/objects.mk
> +++ b/lib/sbi/objects.mk
> @@ -89,6 +89,7 @@ libsbi-objs-y += sbi_timer.o
> libsbi-objs-y += sbi_tlb.o
> libsbi-objs-y += sbi_trap.o
> libsbi-objs-y += sbi_trap_ldst.o
> +libsbi-objs-y += sbi_trap_v_ldst.o
> libsbi-objs-y += sbi_unpriv.o
> libsbi-objs-y += sbi_expected_trap.o
> libsbi-objs-y += sbi_cppc.o
> diff --git a/lib/sbi/sbi_trap_ldst.c b/lib/sbi/sbi_trap_ldst.c
> index f9c0241..d3a4d24 100644
> --- a/lib/sbi/sbi_trap_ldst.c
> +++ b/lib/sbi/sbi_trap_ldst.c
> @@ -32,7 +32,7 @@ typedef int (*sbi_trap_ld_emulator)(int rlen, union sbi_ldst_data *out_val,
> typedef int (*sbi_trap_st_emulator)(int wlen, union sbi_ldst_data in_val,
> struct sbi_trap_context *tcntx);
>
> -static ulong sbi_misaligned_tinst_fixup(ulong orig_tinst, ulong new_tinst,
> +ulong sbi_misaligned_tinst_fixup(ulong orig_tinst, ulong new_tinst,
> ulong addr_offset)
> {
> if (new_tinst == INSN_PSEUDO_VS_LOAD ||
> @@ -52,7 +52,7 @@ static int sbi_trap_emulate_load(struct sbi_trap_context *tcntx,
> ulong insn, insn_len;
> union sbi_ldst_data val = { 0 };
> struct sbi_trap_info uptrap;
> - int rc, fp = 0, shift = 0, len = 0;
> + int rc, fp = 0, shift = 0, len = 0, vector = 0;
>
> if (orig_trap->tinst & 0x1) {
> /*
> @@ -144,6 +144,9 @@ static int sbi_trap_emulate_load(struct sbi_trap_context *tcntx,
> len = 2;
> shift = 8 * (sizeof(ulong) - len);
> insn = RVC_RS2S(insn) << SH_RD;
> + } else if (IS_VECTOR_LOAD_STORE(insn)) {
> + vector = 1;
> + emu = sbi_misaligned_v_ld_emulator;
> } else {
> return sbi_trap_redirect(regs, orig_trap);
> }
> @@ -152,14 +155,16 @@ static int sbi_trap_emulate_load(struct sbi_trap_context *tcntx,
> if (rc <= 0)
> return rc;
>
> - if (!fp)
> - SET_RD(insn, regs, ((long)(val.data_ulong << shift)) >> shift);
> + if (!vector) {
> + if (!fp)
> + SET_RD(insn, regs, ((long)(val.data_ulong << shift)) >> shift);
> #ifdef __riscv_flen
> - else if (len == 8)
> - SET_F64_RD(insn, regs, val.data_u64);
> - else
> - SET_F32_RD(insn, regs, val.data_ulong);
> + else if (len == 8)
> + SET_F64_RD(insn, regs, val.data_u64);
> + else
> + SET_F32_RD(insn, regs, val.data_ulong);
> #endif
> + }
>
> regs->mepc += insn_len;
>
> @@ -248,6 +253,8 @@ static int sbi_trap_emulate_store(struct sbi_trap_context *tcntx,
> } else if ((insn & INSN_MASK_C_SH) == INSN_MATCH_C_SH) {
> len = 2;
> val.data_ulong = GET_RS2S(insn, regs);
> + } else if (IS_VECTOR_LOAD_STORE(insn)) {
> + emu = sbi_misaligned_v_st_emulator;
> } else {
> return sbi_trap_redirect(regs, orig_trap);
> }
> diff --git a/lib/sbi/sbi_trap_v_ldst.c b/lib/sbi/sbi_trap_v_ldst.c
> new file mode 100644
> index 0000000..9ca16d5
> --- /dev/null
> +++ b/lib/sbi/sbi_trap_v_ldst.c
> @@ -0,0 +1,341 @@
> +/*
> + * SPDX-License-Identifier: BSD-2-Clause
> + *
> + * Copyright (c) 2024 SiFive Inc.
> + *
> + * Authors:
> + * Andrew Waterman <andrew at sifive.com>
> + * Nylon Chen <nylon.chen at sifive.com>
> + * Zong Li <nylon.chen at sifive.com>
> + */
> +
> +#include <sbi/riscv_asm.h>
> +#include <sbi/riscv_encoding.h>
> +#include <sbi/sbi_error.h>
> +#include <sbi/sbi_trap_ldst.h>
> +#include <sbi/sbi_trap.h>
> +#include <sbi/sbi_unpriv.h>
> +#include <sbi/sbi_trap.h>
> +
> +#ifdef CONFIG_SUPPORT_VECTOR
This should be "#ifdef __riscv_vector"
> +#define VLEN_MAX 65536
> +
> +static inline void set_vreg(ulong vlenb, ulong which, ulong pos, ulong size, const uint8_t *bytes)
> +{
> + pos += (which % 8) * vlenb;
> + bytes -= pos;
> +
> + asm volatile (
> + " .option push\n\t"
> + " .option arch, +v\n\t"
> + " vsetvli x0, %0, e8, m8, tu, ma\n\t"
> + " .option pop\n\t"
> + :: "r" (pos + size));
> +
> + csr_write(CSR_VSTART, pos);
> +
> + switch (which / 8) {
> + case 0:
> + asm volatile (
> + " .option push\n\t"
> + " .option arch, +v\n\t"
> + " vle8.v v0, (%0)\n\t"
> + " .option pop\n\t"
> + :: "r" (bytes) : "memory");
> + break;
> + case 1:
> + asm volatile (
> + " .option push\n\t"
> + " .option arch, +v\n\t"
> + " vle8.v v8, (%0)\n\t"
> + " .option pop\n\t"
> + :: "r" (bytes) : "memory");
> + break;
> + case 2:
> + asm volatile (
> + " .option push\n\t"
> + " .option arch, +v\n\t"
> + " vle8.v v16, (%0)\n\t"
> + " .option pop\n\t"
> + :: "r" (bytes) : "memory");
> + break;
> + case 3:
> + asm volatile (
> + " .option push\n\t"
> + " .option arch, +v\n\t"
> + " vle8.v v24, (%0)\n\t"
> + " .option pop\n\t"
> + :: "r" (bytes) : "memory");
> + break;
> + default:
> + break;
> + }
> +}
> +
> +static inline void get_vreg(ulong vlenb, ulong which, ulong pos, ulong size, uint8_t *bytes)
> +{
> + pos += (which % 8) * vlenb;
> + bytes -= pos;
> +
> + asm volatile (
> + " .option push\n\t"
> + " .option arch, +v\n\t"
> + " vsetvli x0, %0, e8, m8, tu, ma\n\t"
> + " .option pop\n\t"
> + :: "r" (pos + size));
> +
> + csr_write(CSR_VSTART, pos);
> +
> + switch (which / 8) {
> + case 0:
> + asm volatile (
> + " .option push\n\t"
> + " .option arch, +v\n\t"
> + " vse8.v v0, (%0)\n\t"
> + " .option pop\n\t"
> + :: "r" (bytes) : "memory");
> + break;
> + case 1:
> + asm volatile (
> + " .option push\n\t"
> + " .option arch, +v\n\t"
> + " vse8.v v8, (%0)\n\t"
> + " .option pop\n\t"
> + :: "r" (bytes) : "memory");
> + break;
> + case 2:
> + asm volatile (
> + " .option push\n\t"
> + " .option arch, +v\n\t"
> + " vse8.v v16, (%0)\n\t"
> + " .option pop\n\t"
> + :: "r" (bytes) : "memory");
> + break;
> + case 3:
> + asm volatile (
> + ".option push\n\t"
> + ".option arch, +v\n\t"
> + "vse8.v v24, (%0)\n\t"
> + ".option pop\n\t"
> + :: "r" (bytes) : "memory");
> + break;
> + default:
> + break;
> + }
> +}
> +
> +static inline void vsetvl(ulong vl, ulong vtype)
> +{
> + asm volatile (
> + " .option push\n\t"
> + " .option arch, +v\n\t"
> + " vsetvl x0, %0, %1\n\t"
> + " .option pop\n\t"
> + :: "r" (vl), "r" (vtype));
> +}
> +
> +int sbi_misaligned_v_ld_emulator(int rlen, union sbi_ldst_data *out_val,
> + struct sbi_trap_context *tcntx)
> +{
> + const struct sbi_trap_info *orig_trap = &tcntx->trap;
> + struct sbi_trap_regs *regs = &tcntx->regs;
> + struct sbi_trap_info uptrap;
> + ulong insn = sbi_get_insn(regs->mepc, &uptrap);
> + ulong vl = csr_read(CSR_VL);
> + ulong vtype = csr_read(CSR_VTYPE);
> + ulong vlenb = csr_read(CSR_VLENB);
> + ulong vstart = csr_read(CSR_VSTART);
> + ulong base = GET_RS1(insn, regs);
> + ulong stride = GET_RS2(insn, regs);
> + ulong vd = GET_VD(insn);
> + ulong vs2 = GET_VS2(insn);
> + ulong view = GET_VIEW(insn);
> + ulong vsew = GET_VSEW(vtype);
> + ulong vlmul = GET_VLMUL(vtype);
> + bool illegal = GET_MEW(insn);
> + bool masked = IS_MASKED(insn);
> + uint8_t mask[VLEN_MAX / 8];
> + uint8_t bytes[8 * sizeof(uint64_t)];
> + ulong len = GET_LEN(view);
> + ulong nf = GET_NF(insn);
> + ulong vemul = GET_VEMUL(vlmul, view, vsew);
> + ulong emul = GET_EMUL(vemul);
> +
> + if (IS_UNIT_STRIDE_LOAD(insn) || IS_FAULT_ONLY_FIRST_LOAD(insn)) {
> + stride = nf * len;
> + } else if (IS_WHOLE_REG_LOAD(insn)) {
> + vl = (nf * vlenb) >> view;
> + nf = 1;
> + vemul = 0;
> + emul = 1;
> + stride = nf * len;
> + } else if (IS_INDEXED_LOAD(insn)) {
> + len = 1 << vsew;
> + vemul = (vlmul + vsew - vsew) & 7;
> + emul = 1 << ((vemul & 4) ? 0 : vemul);
> + stride = nf * len;
> + }
> +
> + if (illegal || vlenb > VLEN_MAX / 8) {
> + struct sbi_trap_info trap = {
> + uptrap.cause = CAUSE_ILLEGAL_INSTRUCTION,
> + uptrap.tval = insn,
> + };
> + return sbi_trap_redirect(regs, &trap);
> + }
> +
> + if (masked)
> + get_vreg(vlenb, 0, 0, vlenb, mask);
> +
> + do {
> + if (!masked || ((mask[vstart / 8] >> (vstart % 8)) & 1)) {
> + // compute element address
> + ulong addr = base + vstart * stride;
> +
> + if (IS_INDEXED_LOAD(insn)) {
> + ulong offset = 0;
> +
> + get_vreg(vlenb, vs2, vstart << view, 1 << view, (uint8_t *)&offset);
> + addr = base + offset;
> + }
> +
> + csr_write(CSR_VSTART, vstart);
> +
> + // obtain load data from memory
> + for (ulong seg = 0; seg < nf; seg++) {
> + for (ulong i = 0; i < len; i++) {
> + bytes[seg * len + i] =
> + sbi_load_u8((void *)(addr + seg * len + i),
> + &uptrap);
> +
> + if (uptrap.cause) {
> + if (IS_FAULT_ONLY_FIRST_LOAD(insn) && vstart != 0) {
> + vl = vstart;
> + break;
> + }
> + vsetvl(vl, vtype);
> + uptrap.tinst = sbi_misaligned_tinst_fixup(
> + orig_trap->tinst, uptrap.tinst, i);
> + return sbi_trap_redirect(regs, &uptrap);
> + }
> + }
> + }
> +
> + // write load data to regfile
> + for (ulong seg = 0; seg < nf; seg++)
> + set_vreg(vlenb, vd + seg * emul, vstart * len,
> + len, &bytes[seg * len]);
> + }
> + } while (++vstart < vl);
> +
> + // restore clobbered vl/vtype
> + vsetvl(vl, vtype);
> +
> + return vl;
> +}
> +
> +int sbi_misaligned_v_st_emulator(int wlen, union sbi_ldst_data in_val,
> + struct sbi_trap_context *tcntx)
> +{
> + const struct sbi_trap_info *orig_trap = &tcntx->trap;
> + struct sbi_trap_regs *regs = &tcntx->regs;
> + struct sbi_trap_info uptrap;
> + ulong insn = sbi_get_insn(regs->mepc, &uptrap);
> + ulong vl = csr_read(CSR_VL);
> + ulong vtype = csr_read(CSR_VTYPE);
> + ulong vlenb = csr_read(CSR_VLENB);
> + ulong vstart = csr_read(CSR_VSTART);
> + ulong base = GET_RS1(insn, regs);
> + ulong stride = GET_RS2(insn, regs);
> + ulong vd = GET_VD(insn);
> + ulong vs2 = GET_VS2(insn);
> + ulong view = GET_VIEW(insn);
> + ulong vsew = GET_VSEW(vtype);
> + ulong vlmul = GET_VLMUL(vtype);
> + bool illegal = GET_MEW(insn);
> + bool masked = IS_MASKED(insn);
> + uint8_t mask[VLEN_MAX / 8];
> + uint8_t bytes[8 * sizeof(uint64_t)];
> + ulong len = GET_LEN(view);
> + ulong nf = GET_NF(insn);
> + ulong vemul = GET_VEMUL(vlmul, view, vsew);
> + ulong emul = GET_EMUL(vemul);
> +
> + if (IS_UNIT_STRIDE_STORE(insn)) {
> + stride = nf * len;
> + } else if (IS_WHOLE_REG_STORE(insn)) {
> + vl = (nf * vlenb) >> view;
> + nf = 1;
> + vemul = 0;
> + emul = 1;
> + stride = nf * len;
> + } else if (IS_INDEXED_STORE(insn)) {
> + len = 1 << vsew;
> + vemul = (vlmul + vsew - vsew) & 7;
> + emul = 1 << ((vemul & 4) ? 0 : vemul);
> + stride = nf * len;
> + }
> +
> + if (illegal || vlenb > VLEN_MAX / 8) {
> + struct sbi_trap_info trap = {
> + uptrap.cause = CAUSE_ILLEGAL_INSTRUCTION,
> + uptrap.tval = insn,
> + };
> + return sbi_trap_redirect(regs, &trap);
> + }
> +
> + if (masked)
> + get_vreg(vlenb, 0, 0, vlenb, mask);
> +
> + do {
> + if (!masked || ((mask[vstart / 8] >> (vstart % 8)) & 1)) {
> + // compute element address
> + ulong addr = base + vstart * stride;
> +
> + if (IS_INDEXED_STORE(insn)) {
> + ulong offset = 0;
> +
> + get_vreg(vlenb, vs2, vstart << view, 1 << view, (uint8_t *)&offset);
> + addr = base + offset;
> + }
> +
> + // obtain store data from regfile
> + for (ulong seg = 0; seg < nf; seg++)
> + get_vreg(vlenb, vd + seg * emul, vstart * len,
> + len, &bytes[seg * len]);
> +
> + csr_write(CSR_VSTART, vstart);
> +
> + // write store data to memory
> + for (ulong seg = 0; seg < nf; seg++) {
> + for (ulong i = 0; i < len; i++) {
> + sbi_store_u8((void *)(addr + seg * len + i),
> + bytes[seg * len + i], &uptrap);
> + if (uptrap.cause) {
> + vsetvl(vl, vtype);
> + uptrap.tinst = sbi_misaligned_tinst_fixup(
> + orig_trap->tinst, uptrap.tinst, i);
> + return sbi_trap_redirect(regs, &uptrap);
> + }
> + }
> + }
> + }
> + } while (++vstart < vl);
> +
> + // restore clobbered vl/vtype
> + vsetvl(vl, vtype);
> +
> + return vl;
> +}
> +#else
> +int sbi_misaligned_v_ld_emulator(int rlen, union sbi_ldst_data *out_val,
> + struct sbi_trap_context *tcntx)
> +{
> + return 0;
> +}
> +int sbi_misaligned_v_st_emulator(int wlen, union sbi_ldst_data in_val,
> + struct sbi_trap_context *tcntx)
> +{
> + return 0;
> +}
> +#endif /* CONFIG_SUPPORT_VECTOR */
> --
> 2.34.1
>
>
> --
> opensbi mailing list
> opensbi at lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/opensbi
Otherwise, this looks good to me.
Reviewed-by: Anup Patel <anup at brainfault.org>
Regards,
Anup
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