[PATCH v5 0/3] Move duplicated instructions macros into asm/insn.h

[PATCH v5 0/3] Move duplicated instructions macros into asm/insn.h

[Alexandre Ghiti]

The instructions parsing macros were duplicated and one of them had different
implementations, which is error prone.

So let's consolidate those macros in asm/insn.h.

v1: https://lore.kernel.org/linux-riscv/20250422082545.450453-1-alexghiti@rivosinc.com/
v2: https://lore.kernel.org/linux-riscv/20250508082215.88658-1-alexghiti@rivosinc.com/
v3: https://lore.kernel.org/linux-riscv/20250508125202.108613-1-alexghiti@rivosinc.com/
v4: https://lore.kernel.org/linux-riscv/20250516140805.282770-1-alexghiti@rivosinc.com/

Changes in v5:
- Rebase on top of 6.16-rc1

Changes in v4:
- Rebase on top of for-next (on top of 6.15-rc6)

Changes in v3:
- Fix patch 2 which caused build failures (linux riscv bot), but the
  patchset is exactly the same as v2

Changes in v2:
- Rebase on top of 6.15-rc5
- Add RB tags
- Define RV_X() using RV_X_mask() (Clément)
- Remove unused defines (Clément)
- Fix tabulations (Drew)

Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
---
Alexandre Ghiti (3):
      riscv: Fix typo EXRACT -> EXTRACT
      riscv: Strengthen duplicate and inconsistent definition of RV_X()
      riscv: Move all duplicate insn parsing macros into asm/insn.h

 arch/riscv/include/asm/insn.h          | 206 +++++++++++++++++++++++++++++----
 arch/riscv/kernel/machine_kexec_file.c |   2 +-
 arch/riscv/kernel/traps_misaligned.c   | 144 +----------------------
 arch/riscv/kernel/vector.c             |   2 +-
 arch/riscv/kvm/vcpu_insn.c             | 128 +-------------------
 5 files changed, 188 insertions(+), 294 deletions(-)
---
base-commit: 731e998c429974cb141a049c1347a9cab444e44c
change-id: 20250620-dev-alex-insn_duplicate_v5_manual-2c23191c30fb

Best regards,
-- 
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[PATCH v5 1/3] riscv: Fix typo EXRACT -> EXTRACT

[Alexandre Ghiti]

Simply fix a typo.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
---
 arch/riscv/include/asm/insn.h | 2 +-
 arch/riscv/kernel/vector.c    | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/riscv/include/asm/insn.h b/arch/riscv/include/asm/insn.h
index 09fde95a5e8f75ac6ee741ded7c6beaa57677d13..2a589a58b2917d67efcb18792b05f5e640bda37f 100644
--- a/arch/riscv/include/asm/insn.h
+++ b/arch/riscv/include/asm/insn.h
@@ -352,7 +352,7 @@ static __always_inline bool riscv_insn_is_c_jalr(u32 code)
 	({typeof(x) x_ = (x); RV_X(x_, RVFDQ_FL_FS_WIDTH_OFF, \
 				   RVFDQ_FL_FS_WIDTH_MASK); })
 
-#define RVV_EXRACT_VL_VS_WIDTH(x) RVFDQ_EXTRACT_FL_FS_WIDTH(x)
+#define RVV_EXTRACT_VL_VS_WIDTH(x) RVFDQ_EXTRACT_FL_FS_WIDTH(x)
 
 /*
  * Get the immediate from a J-type instruction.
diff --git a/arch/riscv/kernel/vector.c b/arch/riscv/kernel/vector.c
index 184f780c932d443d81eecac7a6fb8070ee7a5824..901e67adf57608385e6815be1518e70216236eda 100644
--- a/arch/riscv/kernel/vector.c
+++ b/arch/riscv/kernel/vector.c
@@ -93,7 +93,7 @@ bool insn_is_vector(u32 insn_buf)
 		return true;
 	case RVV_OPCODE_VL:
 	case RVV_OPCODE_VS:
-		width = RVV_EXRACT_VL_VS_WIDTH(insn_buf);
+		width = RVV_EXTRACT_VL_VS_WIDTH(insn_buf);
 		if (width == RVV_VL_VS_WIDTH_8 || width == RVV_VL_VS_WIDTH_16 ||
 		    width == RVV_VL_VS_WIDTH_32 || width == RVV_VL_VS_WIDTH_64)
 			return true;

-- 
2.34.1


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[PATCH v5 2/3] riscv: Strengthen duplicate and inconsistent definition of RV_X()

[Alexandre Ghiti]

RV_X() macro is defined in two different ways which is error prone.

So harmonize its first definition and add another macro RV_X_mask() for
the second one.

Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
---
 arch/riscv/include/asm/insn.h          | 39 +++++++++++++++++-----------------
 arch/riscv/kernel/machine_kexec_file.c |  2 +-
 arch/riscv/kernel/traps_misaligned.c   |  2 +-
 arch/riscv/kvm/vcpu_insn.c             |  2 +-
 4 files changed, 23 insertions(+), 22 deletions(-)

diff --git a/arch/riscv/include/asm/insn.h b/arch/riscv/include/asm/insn.h
index 2a589a58b2917d67efcb18792b05f5e640bda37f..ac3e606feca2584494ce4c41afd64c5f22a65c44 100644
--- a/arch/riscv/include/asm/insn.h
+++ b/arch/riscv/include/asm/insn.h
@@ -288,43 +288,44 @@ static __always_inline bool riscv_insn_is_c_jalr(u32 code)
 
 #define RV_IMM_SIGN(x) (-(((x) >> 31) & 1))
 #define RVC_IMM_SIGN(x) (-(((x) >> 12) & 1))
-#define RV_X(X, s, mask)  (((X) >> (s)) & (mask))
-#define RVC_X(X, s, mask) RV_X(X, s, mask)
+#define RV_X_mask(X, s, mask)  (((X) >> (s)) & (mask))
+#define RV_X(X, s, n) RV_X_mask(X, s, ((1 << (n)) - 1))
+#define RVC_X(X, s, mask) RV_X_mask(X, s, mask)
 
 #define RV_EXTRACT_RS1_REG(x) \
 	({typeof(x) x_ = (x); \
-	(RV_X(x_, RVG_RS1_OPOFF, RVG_RS1_MASK)); })
+	(RV_X_mask(x_, RVG_RS1_OPOFF, RVG_RS1_MASK)); })
 
 #define RV_EXTRACT_RD_REG(x) \
 	({typeof(x) x_ = (x); \
-	(RV_X(x_, RVG_RD_OPOFF, RVG_RD_MASK)); })
+	(RV_X_mask(x_, RVG_RD_OPOFF, RVG_RD_MASK)); })
 
 #define RV_EXTRACT_UTYPE_IMM(x) \
 	({typeof(x) x_ = (x); \
-	(RV_X(x_, RV_U_IMM_31_12_OPOFF, RV_U_IMM_31_12_MASK)); })
+	(RV_X_mask(x_, RV_U_IMM_31_12_OPOFF, RV_U_IMM_31_12_MASK)); })
 
 #define RV_EXTRACT_JTYPE_IMM(x) \
 	({typeof(x) x_ = (x); \
-	(RV_X(x_, RV_J_IMM_10_1_OPOFF, RV_J_IMM_10_1_MASK) << RV_J_IMM_10_1_OFF) | \
-	(RV_X(x_, RV_J_IMM_11_OPOFF, RV_J_IMM_11_MASK) << RV_J_IMM_11_OFF) | \
-	(RV_X(x_, RV_J_IMM_19_12_OPOFF, RV_J_IMM_19_12_MASK) << RV_J_IMM_19_12_OFF) | \
+	(RV_X_mask(x_, RV_J_IMM_10_1_OPOFF, RV_J_IMM_10_1_MASK) << RV_J_IMM_10_1_OFF) | \
+	(RV_X_mask(x_, RV_J_IMM_11_OPOFF, RV_J_IMM_11_MASK) << RV_J_IMM_11_OFF) | \
+	(RV_X_mask(x_, RV_J_IMM_19_12_OPOFF, RV_J_IMM_19_12_MASK) << RV_J_IMM_19_12_OFF) | \
 	(RV_IMM_SIGN(x_) << RV_J_IMM_SIGN_OFF); })
 
 #define RV_EXTRACT_ITYPE_IMM(x) \
 	({typeof(x) x_ = (x); \
-	(RV_X(x_, RV_I_IMM_11_0_OPOFF, RV_I_IMM_11_0_MASK)) | \
+	(RV_X_mask(x_, RV_I_IMM_11_0_OPOFF, RV_I_IMM_11_0_MASK)) | \
 	(RV_IMM_SIGN(x_) << RV_I_IMM_SIGN_OFF); })
 
 #define RV_EXTRACT_BTYPE_IMM(x) \
 	({typeof(x) x_ = (x); \
-	(RV_X(x_, RV_B_IMM_4_1_OPOFF, RV_B_IMM_4_1_MASK) << RV_B_IMM_4_1_OFF) | \
-	(RV_X(x_, RV_B_IMM_10_5_OPOFF, RV_B_IMM_10_5_MASK) << RV_B_IMM_10_5_OFF) | \
-	(RV_X(x_, RV_B_IMM_11_OPOFF, RV_B_IMM_11_MASK) << RV_B_IMM_11_OFF) | \
+	(RV_X_mask(x_, RV_B_IMM_4_1_OPOFF, RV_B_IMM_4_1_MASK) << RV_B_IMM_4_1_OFF) | \
+	(RV_X_mask(x_, RV_B_IMM_10_5_OPOFF, RV_B_IMM_10_5_MASK) << RV_B_IMM_10_5_OFF) | \
+	(RV_X_mask(x_, RV_B_IMM_11_OPOFF, RV_B_IMM_11_MASK) << RV_B_IMM_11_OFF) | \
 	(RV_IMM_SIGN(x_) << RV_B_IMM_SIGN_OFF); })
 
 #define RVC_EXTRACT_C2_RS1_REG(x) \
 	({typeof(x) x_ = (x); \
-	(RV_X(x_, RVC_C2_RS1_OPOFF, RVC_C2_RS1_MASK)); })
+	(RV_X_mask(x_, RVC_C2_RS1_OPOFF, RVC_C2_RS1_MASK)); })
 
 #define RVC_EXTRACT_JTYPE_IMM(x) \
 	({typeof(x) x_ = (x); \
@@ -346,10 +347,10 @@ static __always_inline bool riscv_insn_is_c_jalr(u32 code)
 	(RVC_IMM_SIGN(x_) << RVC_B_IMM_SIGN_OFF); })
 
 #define RVG_EXTRACT_SYSTEM_CSR(x) \
-	({typeof(x) x_ = (x); RV_X(x_, RVG_SYSTEM_CSR_OFF, RVG_SYSTEM_CSR_MASK); })
+	({typeof(x) x_ = (x); RV_X_mask(x_, RVG_SYSTEM_CSR_OFF, RVG_SYSTEM_CSR_MASK); })
 
 #define RVFDQ_EXTRACT_FL_FS_WIDTH(x) \
-	({typeof(x) x_ = (x); RV_X(x_, RVFDQ_FL_FS_WIDTH_OFF, \
+	({typeof(x) x_ = (x); RV_X_mask(x_, RVFDQ_FL_FS_WIDTH_OFF, \
 				   RVFDQ_FL_FS_WIDTH_MASK); })
 
 #define RVV_EXTRACT_VL_VS_WIDTH(x) RVFDQ_EXTRACT_FL_FS_WIDTH(x)
@@ -375,10 +376,10 @@ static inline void riscv_insn_insert_jtype_imm(u32 *insn, s32 imm)
 {
 	/* drop the old IMMs, all jal IMM bits sit at 31:12 */
 	*insn &= ~GENMASK(31, 12);
-	*insn |= (RV_X(imm, RV_J_IMM_10_1_OFF, RV_J_IMM_10_1_MASK) << RV_J_IMM_10_1_OPOFF) |
-		 (RV_X(imm, RV_J_IMM_11_OFF, RV_J_IMM_11_MASK) << RV_J_IMM_11_OPOFF) |
-		 (RV_X(imm, RV_J_IMM_19_12_OFF, RV_J_IMM_19_12_MASK) << RV_J_IMM_19_12_OPOFF) |
-		 (RV_X(imm, RV_J_IMM_SIGN_OFF, 1) << RV_J_IMM_SIGN_OPOFF);
+	*insn |= (RV_X_mask(imm, RV_J_IMM_10_1_OFF, RV_J_IMM_10_1_MASK) << RV_J_IMM_10_1_OPOFF) |
+		 (RV_X_mask(imm, RV_J_IMM_11_OFF, RV_J_IMM_11_MASK) << RV_J_IMM_11_OPOFF) |
+		 (RV_X_mask(imm, RV_J_IMM_19_12_OFF, RV_J_IMM_19_12_MASK) << RV_J_IMM_19_12_OPOFF) |
+		 (RV_X_mask(imm, RV_J_IMM_SIGN_OFF, 1) << RV_J_IMM_SIGN_OPOFF);
 }
 
 /*
diff --git a/arch/riscv/kernel/machine_kexec_file.c b/arch/riscv/kernel/machine_kexec_file.c
index e36104af2e247fc0acb88eb5558d07ac49c713e4..5c2ed4c396e9d242054fdb30510a36bb3901a27b 100644
--- a/arch/riscv/kernel/machine_kexec_file.c
+++ b/arch/riscv/kernel/machine_kexec_file.c
@@ -15,6 +15,7 @@
 #include <linux/memblock.h>
 #include <linux/vmalloc.h>
 #include <asm/setup.h>
+#include <asm/insn.h>
 
 const struct kexec_file_ops * const kexec_file_loaders[] = {
 	&elf_kexec_ops,
@@ -109,7 +110,6 @@ static char *setup_kdump_cmdline(struct kimage *image, char *cmdline,
 }
 #endif
 
-#define RV_X(x, s, n)  (((x) >> (s)) & ((1 << (n)) - 1))
 #define RISCV_IMM_BITS 12
 #define RISCV_IMM_REACH (1LL << RISCV_IMM_BITS)
 #define RISCV_CONST_HIGH_PART(x) \
diff --git a/arch/riscv/kernel/traps_misaligned.c b/arch/riscv/kernel/traps_misaligned.c
index dd8e4af6583f47d2cce8cab61bcd92e7d642a11f..1b69b91d7739c8b8ccb7b1605b6b4b88197b30a5 100644
--- a/arch/riscv/kernel/traps_misaligned.c
+++ b/arch/riscv/kernel/traps_misaligned.c
@@ -18,6 +18,7 @@
 #include <asm/cpufeature.h>
 #include <asm/sbi.h>
 #include <asm/vector.h>
+#include <asm/insn.h>
 
 #define INSN_MATCH_LB			0x3
 #define INSN_MASK_LB			0x707f
@@ -113,7 +114,6 @@
 #define SH_RS2				20
 #define SH_RS2C				2
 
-#define RV_X(x, s, n)			(((x) >> (s)) & ((1 << (n)) - 1))
 #define RVC_LW_IMM(x)			((RV_X(x, 6, 1) << 2) | \
 					 (RV_X(x, 10, 3) << 3) | \
 					 (RV_X(x, 5, 1) << 6))
diff --git a/arch/riscv/kvm/vcpu_insn.c b/arch/riscv/kvm/vcpu_insn.c
index 97dec18e69892a1f3dac5464f892a8bac25eefd5..62cb2ab4b63680d9d436c12bb2faae94e7988761 100644
--- a/arch/riscv/kvm/vcpu_insn.c
+++ b/arch/riscv/kvm/vcpu_insn.c
@@ -8,6 +8,7 @@
 #include <linux/kvm_host.h>
 
 #include <asm/cpufeature.h>
+#include <asm/insn.h>
 
 #define INSN_OPCODE_MASK	0x007c
 #define INSN_OPCODE_SHIFT	2
@@ -91,7 +92,6 @@
 #define SH_RS2C			2
 #define MASK_RX			0x1f
 
-#define RV_X(x, s, n)		(((x) >> (s)) & ((1 << (n)) - 1))
 #define RVC_LW_IMM(x)		((RV_X(x, 6, 1) << 2) | \
 				 (RV_X(x, 10, 3) << 3) | \
 				 (RV_X(x, 5, 1) << 6))

-- 
2.34.1


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[PATCH v5 3/3] riscv: Move all duplicate insn parsing macros into asm/insn.h

[Alexandre Ghiti]

kernel/traps_misaligned.c and kvm/vcpu_insn.c define the same macros to
extract information from the instructions.

Let's move the definitions into asm/insn.h to avoid this duplication.

Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
---
 arch/riscv/include/asm/insn.h        | 171 ++++++++++++++++++++++++++++++++++-
 arch/riscv/kernel/traps_misaligned.c | 142 -----------------------------
 arch/riscv/kvm/vcpu_insn.c           | 126 --------------------------
 3 files changed, 166 insertions(+), 273 deletions(-)

diff --git a/arch/riscv/include/asm/insn.h b/arch/riscv/include/asm/insn.h
index ac3e606feca2584494ce4c41afd64c5f22a65c44..ad26f859cfe5182288aeb57547369bfd1b05735d 100644
--- a/arch/riscv/include/asm/insn.h
+++ b/arch/riscv/include/asm/insn.h
@@ -286,11 +286,172 @@ static __always_inline bool riscv_insn_is_c_jalr(u32 code)
 	       (code & RVC_INSN_J_RS1_MASK) != 0;
 }
 
-#define RV_IMM_SIGN(x) (-(((x) >> 31) & 1))
-#define RVC_IMM_SIGN(x) (-(((x) >> 12) & 1))
-#define RV_X_mask(X, s, mask)  (((X) >> (s)) & (mask))
-#define RV_X(X, s, n) RV_X_mask(X, s, ((1 << (n)) - 1))
-#define RVC_X(X, s, mask) RV_X_mask(X, s, mask)
+#define INSN_MATCH_LB		0x3
+#define INSN_MASK_LB		0x707f
+#define INSN_MATCH_LH		0x1003
+#define INSN_MASK_LH		0x707f
+#define INSN_MATCH_LW		0x2003
+#define INSN_MASK_LW		0x707f
+#define INSN_MATCH_LD		0x3003
+#define INSN_MASK_LD		0x707f
+#define INSN_MATCH_LBU		0x4003
+#define INSN_MASK_LBU		0x707f
+#define INSN_MATCH_LHU		0x5003
+#define INSN_MASK_LHU		0x707f
+#define INSN_MATCH_LWU		0x6003
+#define INSN_MASK_LWU		0x707f
+#define INSN_MATCH_SB		0x23
+#define INSN_MASK_SB		0x707f
+#define INSN_MATCH_SH		0x1023
+#define INSN_MASK_SH		0x707f
+#define INSN_MATCH_SW		0x2023
+#define INSN_MASK_SW		0x707f
+#define INSN_MATCH_SD		0x3023
+#define INSN_MASK_SD		0x707f
+
+#define INSN_MATCH_C_LD		0x6000
+#define INSN_MASK_C_LD		0xe003
+#define INSN_MATCH_C_SD		0xe000
+#define INSN_MASK_C_SD		0xe003
+#define INSN_MATCH_C_LW		0x4000
+#define INSN_MASK_C_LW		0xe003
+#define INSN_MATCH_C_SW		0xc000
+#define INSN_MASK_C_SW		0xe003
+#define INSN_MATCH_C_LDSP	0x6002
+#define INSN_MASK_C_LDSP	0xe003
+#define INSN_MATCH_C_SDSP	0xe002
+#define INSN_MASK_C_SDSP	0xe003
+#define INSN_MATCH_C_LWSP	0x4002
+#define INSN_MASK_C_LWSP	0xe003
+#define INSN_MATCH_C_SWSP	0xc002
+#define INSN_MASK_C_SWSP	0xe003
+
+#define INSN_OPCODE_MASK	0x007c
+#define INSN_OPCODE_SHIFT	2
+#define INSN_OPCODE_SYSTEM	28
+
+#define INSN_MASK_WFI		0xffffffff
+#define INSN_MATCH_WFI		0x10500073
+
+#define INSN_MASK_WRS		0xffffffff
+#define INSN_MATCH_WRS		0x00d00073
+
+#define INSN_MATCH_CSRRW	0x1073
+#define INSN_MASK_CSRRW		0x707f
+#define INSN_MATCH_CSRRS	0x2073
+#define INSN_MASK_CSRRS		0x707f
+#define INSN_MATCH_CSRRC	0x3073
+#define INSN_MASK_CSRRC		0x707f
+#define INSN_MATCH_CSRRWI	0x5073
+#define INSN_MASK_CSRRWI	0x707f
+#define INSN_MATCH_CSRRSI	0x6073
+#define INSN_MASK_CSRRSI	0x707f
+#define INSN_MATCH_CSRRCI	0x7073
+#define INSN_MASK_CSRRCI	0x707f
+
+#define INSN_MATCH_FLW		0x2007
+#define INSN_MASK_FLW		0x707f
+#define INSN_MATCH_FLD		0x3007
+#define INSN_MASK_FLD		0x707f
+#define INSN_MATCH_FLQ		0x4007
+#define INSN_MASK_FLQ		0x707f
+#define INSN_MATCH_FSW		0x2027
+#define INSN_MASK_FSW		0x707f
+#define INSN_MATCH_FSD		0x3027
+#define INSN_MASK_FSD		0x707f
+#define INSN_MATCH_FSQ		0x4027
+#define INSN_MASK_FSQ		0x707f
+
+#define INSN_MATCH_C_FLD	0x2000
+#define INSN_MASK_C_FLD		0xe003
+#define INSN_MATCH_C_FLW	0x6000
+#define INSN_MASK_C_FLW		0xe003
+#define INSN_MATCH_C_FSD	0xa000
+#define INSN_MASK_C_FSD		0xe003
+#define INSN_MATCH_C_FSW	0xe000
+#define INSN_MASK_C_FSW		0xe003
+#define INSN_MATCH_C_FLDSP	0x2002
+#define INSN_MASK_C_FLDSP	0xe003
+#define INSN_MATCH_C_FSDSP	0xa002
+#define INSN_MASK_C_FSDSP	0xe003
+#define INSN_MATCH_C_FLWSP	0x6002
+#define INSN_MASK_C_FLWSP	0xe003
+#define INSN_MATCH_C_FSWSP	0xe002
+#define INSN_MASK_C_FSWSP	0xe003
+
+#define INSN_MATCH_C_LHU		0x8400
+#define INSN_MASK_C_LHU			0xfc43
+#define INSN_MATCH_C_LH			0x8440
+#define INSN_MASK_C_LH			0xfc43
+#define INSN_MATCH_C_SH			0x8c00
+#define INSN_MASK_C_SH			0xfc43
+
+#define INSN_16BIT_MASK		0x3
+#define INSN_IS_16BIT(insn)	(((insn) & INSN_16BIT_MASK) != INSN_16BIT_MASK)
+#define INSN_LEN(insn)		(INSN_IS_16BIT(insn) ? 2 : 4)
+
+#define SHIFT_RIGHT(x, y)		\
+	((y) < 0 ? ((x) << -(y)) : ((x) >> (y)))
+
+#define REG_MASK			\
+	((1 << (5 + LOG_REGBYTES)) - (1 << LOG_REGBYTES))
+
+#define REG_OFFSET(insn, pos)		\
+	(SHIFT_RIGHT((insn), (pos) - LOG_REGBYTES) & REG_MASK)
+
+#define REG_PTR(insn, pos, regs)	\
+	((ulong *)((ulong)(regs) + REG_OFFSET(insn, pos)))
+
+#define GET_RS1(insn, regs)	(*REG_PTR(insn, SH_RS1, regs))
+#define GET_RS2(insn, regs)	(*REG_PTR(insn, SH_RS2, regs))
+#define GET_RS1S(insn, regs)	(*REG_PTR(RVC_RS1S(insn), 0, regs))
+#define GET_RS2S(insn, regs)	(*REG_PTR(RVC_RS2S(insn), 0, regs))
+#define GET_RS2C(insn, regs)	(*REG_PTR(insn, SH_RS2C, regs))
+#define GET_SP(regs)		(*REG_PTR(2, 0, regs))
+#define SET_RD(insn, regs, val)	(*REG_PTR(insn, SH_RD, regs) = (val))
+#define IMM_I(insn)		((s32)(insn) >> 20)
+#define IMM_S(insn)		(((s32)(insn) >> 25 << 5) | \
+				 (s32)(((insn) >> 7) & 0x1f))
+
+#define SH_RD			7
+#define SH_RS1			15
+#define SH_RS2			20
+#define SH_RS2C			2
+#define MASK_RX			0x1f
+
+#if defined(CONFIG_64BIT)
+#define LOG_REGBYTES		3
+#else
+#define LOG_REGBYTES		2
+#endif
+
+#define MASK_FUNCT3		0x7000
+
+#define GET_FUNCT3(insn)	(((insn) >> 12) & 7)
+
+#define RV_IMM_SIGN(x)		(-(((x) >> 31) & 1))
+#define RVC_IMM_SIGN(x)		(-(((x) >> 12) & 1))
+#define RV_X_mask(X, s, mask)	(((X) >> (s)) & (mask))
+#define RV_X(X, s, n)		RV_X_mask(X, s, ((1 << (n)) - 1))
+#define RVC_LW_IMM(x)		((RV_X(x, 6, 1) << 2) | \
+				 (RV_X(x, 10, 3) << 3) | \
+				 (RV_X(x, 5, 1) << 6))
+#define RVC_LD_IMM(x)		((RV_X(x, 10, 3) << 3) | \
+				 (RV_X(x, 5, 2) << 6))
+#define RVC_LWSP_IMM(x)		((RV_X(x, 4, 3) << 2) | \
+				 (RV_X(x, 12, 1) << 5) | \
+				 (RV_X(x, 2, 2) << 6))
+#define RVC_LDSP_IMM(x)		((RV_X(x, 5, 2) << 3) | \
+				 (RV_X(x, 12, 1) << 5) | \
+				 (RV_X(x, 2, 3) << 6))
+#define RVC_SWSP_IMM(x)		((RV_X(x, 9, 4) << 2) | \
+				 (RV_X(x, 7, 2) << 6))
+#define RVC_SDSP_IMM(x)		((RV_X(x, 10, 3) << 3) | \
+				 (RV_X(x, 7, 3) << 6))
+#define RVC_RS1S(insn)		(8 + RV_X(insn, SH_RD, 3))
+#define RVC_RS2S(insn)		(8 + RV_X(insn, SH_RS2C, 3))
+#define RVC_RS2(insn)		RV_X(insn, SH_RS2C, 5)
+#define RVC_X(X, s, mask)	RV_X_mask(X, s, mask)
 
 #define RV_EXTRACT_RS1_REG(x) \
 	({typeof(x) x_ = (x); \
diff --git a/arch/riscv/kernel/traps_misaligned.c b/arch/riscv/kernel/traps_misaligned.c
index 1b69b91d7739c8b8ccb7b1605b6b4b88197b30a5..3d4106a6be2f9d593c0b05559436ae4df35e3463 100644
--- a/arch/riscv/kernel/traps_misaligned.c
+++ b/arch/riscv/kernel/traps_misaligned.c
@@ -20,148 +20,6 @@
 #include <asm/vector.h>
 #include <asm/insn.h>
 
-#define INSN_MATCH_LB			0x3
-#define INSN_MASK_LB			0x707f
-#define INSN_MATCH_LH			0x1003
-#define INSN_MASK_LH			0x707f
-#define INSN_MATCH_LW			0x2003
-#define INSN_MASK_LW			0x707f
-#define INSN_MATCH_LD			0x3003
-#define INSN_MASK_LD			0x707f
-#define INSN_MATCH_LBU			0x4003
-#define INSN_MASK_LBU			0x707f
-#define INSN_MATCH_LHU			0x5003
-#define INSN_MASK_LHU			0x707f
-#define INSN_MATCH_LWU			0x6003
-#define INSN_MASK_LWU			0x707f
-#define INSN_MATCH_SB			0x23
-#define INSN_MASK_SB			0x707f
-#define INSN_MATCH_SH			0x1023
-#define INSN_MASK_SH			0x707f
-#define INSN_MATCH_SW			0x2023
-#define INSN_MASK_SW			0x707f
-#define INSN_MATCH_SD			0x3023
-#define INSN_MASK_SD			0x707f
-
-#define INSN_MATCH_FLW			0x2007
-#define INSN_MASK_FLW			0x707f
-#define INSN_MATCH_FLD			0x3007
-#define INSN_MASK_FLD			0x707f
-#define INSN_MATCH_FLQ			0x4007
-#define INSN_MASK_FLQ			0x707f
-#define INSN_MATCH_FSW			0x2027
-#define INSN_MASK_FSW			0x707f
-#define INSN_MATCH_FSD			0x3027
-#define INSN_MASK_FSD			0x707f
-#define INSN_MATCH_FSQ			0x4027
-#define INSN_MASK_FSQ			0x707f
-
-#define INSN_MATCH_C_LD			0x6000
-#define INSN_MASK_C_LD			0xe003
-#define INSN_MATCH_C_SD			0xe000
-#define INSN_MASK_C_SD			0xe003
-#define INSN_MATCH_C_LW			0x4000
-#define INSN_MASK_C_LW			0xe003
-#define INSN_MATCH_C_SW			0xc000
-#define INSN_MASK_C_SW			0xe003
-#define INSN_MATCH_C_LDSP		0x6002
-#define INSN_MASK_C_LDSP		0xe003
-#define INSN_MATCH_C_SDSP		0xe002
-#define INSN_MASK_C_SDSP		0xe003
-#define INSN_MATCH_C_LWSP		0x4002
-#define INSN_MASK_C_LWSP		0xe003
-#define INSN_MATCH_C_SWSP		0xc002
-#define INSN_MASK_C_SWSP		0xe003
-
-#define INSN_MATCH_C_FLD		0x2000
-#define INSN_MASK_C_FLD			0xe003
-#define INSN_MATCH_C_FLW		0x6000
-#define INSN_MASK_C_FLW			0xe003
-#define INSN_MATCH_C_FSD		0xa000
-#define INSN_MASK_C_FSD			0xe003
-#define INSN_MATCH_C_FSW		0xe000
-#define INSN_MASK_C_FSW			0xe003
-#define INSN_MATCH_C_FLDSP		0x2002
-#define INSN_MASK_C_FLDSP		0xe003
-#define INSN_MATCH_C_FSDSP		0xa002
-#define INSN_MASK_C_FSDSP		0xe003
-#define INSN_MATCH_C_FLWSP		0x6002
-#define INSN_MASK_C_FLWSP		0xe003
-#define INSN_MATCH_C_FSWSP		0xe002
-#define INSN_MASK_C_FSWSP		0xe003
-
-#define INSN_MATCH_C_LHU		0x8400
-#define INSN_MASK_C_LHU			0xfc43
-#define INSN_MATCH_C_LH			0x8440
-#define INSN_MASK_C_LH			0xfc43
-#define INSN_MATCH_C_SH			0x8c00
-#define INSN_MASK_C_SH			0xfc43
-
-#define INSN_LEN(insn)			((((insn) & 0x3) < 0x3) ? 2 : 4)
-
-#if defined(CONFIG_64BIT)
-#define LOG_REGBYTES			3
-#define XLEN				64
-#else
-#define LOG_REGBYTES			2
-#define XLEN				32
-#endif
-#define REGBYTES			(1 << LOG_REGBYTES)
-#define XLEN_MINUS_16			((XLEN) - 16)
-
-#define SH_RD				7
-#define SH_RS1				15
-#define SH_RS2				20
-#define SH_RS2C				2
-
-#define RVC_LW_IMM(x)			((RV_X(x, 6, 1) << 2) | \
-					 (RV_X(x, 10, 3) << 3) | \
-					 (RV_X(x, 5, 1) << 6))
-#define RVC_LD_IMM(x)			((RV_X(x, 10, 3) << 3) | \
-					 (RV_X(x, 5, 2) << 6))
-#define RVC_LWSP_IMM(x)			((RV_X(x, 4, 3) << 2) | \
-					 (RV_X(x, 12, 1) << 5) | \
-					 (RV_X(x, 2, 2) << 6))
-#define RVC_LDSP_IMM(x)			((RV_X(x, 5, 2) << 3) | \
-					 (RV_X(x, 12, 1) << 5) | \
-					 (RV_X(x, 2, 3) << 6))
-#define RVC_SWSP_IMM(x)			((RV_X(x, 9, 4) << 2) | \
-					 (RV_X(x, 7, 2) << 6))
-#define RVC_SDSP_IMM(x)			((RV_X(x, 10, 3) << 3) | \
-					 (RV_X(x, 7, 3) << 6))
-#define RVC_RS1S(insn)			(8 + RV_X(insn, SH_RD, 3))
-#define RVC_RS2S(insn)			(8 + RV_X(insn, SH_RS2C, 3))
-#define RVC_RS2(insn)			RV_X(insn, SH_RS2C, 5)
-
-#define SHIFT_RIGHT(x, y)		\
-	((y) < 0 ? ((x) << -(y)) : ((x) >> (y)))
-
-#define REG_MASK			\
-	((1 << (5 + LOG_REGBYTES)) - (1 << LOG_REGBYTES))
-
-#define REG_OFFSET(insn, pos)		\
-	(SHIFT_RIGHT((insn), (pos) - LOG_REGBYTES) & REG_MASK)
-
-#define REG_PTR(insn, pos, regs)	\
-	(ulong *)((ulong)(regs) + REG_OFFSET(insn, pos))
-
-#define GET_RS1(insn, regs)		(*REG_PTR(insn, SH_RS1, regs))
-#define GET_RS2(insn, regs)		(*REG_PTR(insn, SH_RS2, regs))
-#define GET_RS1S(insn, regs)		(*REG_PTR(RVC_RS1S(insn), 0, regs))
-#define GET_RS2S(insn, regs)		(*REG_PTR(RVC_RS2S(insn), 0, regs))
-#define GET_RS2C(insn, regs)		(*REG_PTR(insn, SH_RS2C, regs))
-#define GET_SP(regs)			(*REG_PTR(2, 0, regs))
-#define SET_RD(insn, regs, val)		(*REG_PTR(insn, SH_RD, regs) = (val))
-#define IMM_I(insn)			((s32)(insn) >> 20)
-#define IMM_S(insn)			(((s32)(insn) >> 25 << 5) | \
-					 (s32)(((insn) >> 7) & 0x1f))
-#define MASK_FUNCT3			0x7000
-
-#define GET_PRECISION(insn) (((insn) >> 25) & 3)
-#define GET_RM(insn) (((insn) >> 12) & 7)
-#define PRECISION_S 0
-#define PRECISION_D 1
-
 #ifdef CONFIG_FPU
 
 #define FP_GET_RD(insn)		(insn >> 7 & 0x1F)
diff --git a/arch/riscv/kvm/vcpu_insn.c b/arch/riscv/kvm/vcpu_insn.c
index 62cb2ab4b63680d9d436c12bb2faae94e7988761..de1f96ea62251ff8ab45eddcf2e976f0e0d1da29 100644
--- a/arch/riscv/kvm/vcpu_insn.c
+++ b/arch/riscv/kvm/vcpu_insn.c
@@ -10,132 +10,6 @@
 #include <asm/cpufeature.h>
 #include <asm/insn.h>
 
-#define INSN_OPCODE_MASK	0x007c
-#define INSN_OPCODE_SHIFT	2
-#define INSN_OPCODE_SYSTEM	28
-
-#define INSN_MASK_WFI		0xffffffff
-#define INSN_MATCH_WFI		0x10500073
-
-#define INSN_MASK_WRS		0xffffffff
-#define INSN_MATCH_WRS		0x00d00073
-
-#define INSN_MATCH_CSRRW	0x1073
-#define INSN_MASK_CSRRW		0x707f
-#define INSN_MATCH_CSRRS	0x2073
-#define INSN_MASK_CSRRS		0x707f
-#define INSN_MATCH_CSRRC	0x3073
-#define INSN_MASK_CSRRC		0x707f
-#define INSN_MATCH_CSRRWI	0x5073
-#define INSN_MASK_CSRRWI	0x707f
-#define INSN_MATCH_CSRRSI	0x6073
-#define INSN_MASK_CSRRSI	0x707f
-#define INSN_MATCH_CSRRCI	0x7073
-#define INSN_MASK_CSRRCI	0x707f
-
-#define INSN_MATCH_LB		0x3
-#define INSN_MASK_LB		0x707f
-#define INSN_MATCH_LH		0x1003
-#define INSN_MASK_LH		0x707f
-#define INSN_MATCH_LW		0x2003
-#define INSN_MASK_LW		0x707f
-#define INSN_MATCH_LD		0x3003
-#define INSN_MASK_LD		0x707f
-#define INSN_MATCH_LBU		0x4003
-#define INSN_MASK_LBU		0x707f
-#define INSN_MATCH_LHU		0x5003
-#define INSN_MASK_LHU		0x707f
-#define INSN_MATCH_LWU		0x6003
-#define INSN_MASK_LWU		0x707f
-#define INSN_MATCH_SB		0x23
-#define INSN_MASK_SB		0x707f
-#define INSN_MATCH_SH		0x1023
-#define INSN_MASK_SH		0x707f
-#define INSN_MATCH_SW		0x2023
-#define INSN_MASK_SW		0x707f
-#define INSN_MATCH_SD		0x3023
-#define INSN_MASK_SD		0x707f
-
-#define INSN_MATCH_C_LD		0x6000
-#define INSN_MASK_C_LD		0xe003
-#define INSN_MATCH_C_SD		0xe000
-#define INSN_MASK_C_SD		0xe003
-#define INSN_MATCH_C_LW		0x4000
-#define INSN_MASK_C_LW		0xe003
-#define INSN_MATCH_C_SW		0xc000
-#define INSN_MASK_C_SW		0xe003
-#define INSN_MATCH_C_LDSP	0x6002
-#define INSN_MASK_C_LDSP	0xe003
-#define INSN_MATCH_C_SDSP	0xe002
-#define INSN_MASK_C_SDSP	0xe003
-#define INSN_MATCH_C_LWSP	0x4002
-#define INSN_MASK_C_LWSP	0xe003
-#define INSN_MATCH_C_SWSP	0xc002
-#define INSN_MASK_C_SWSP	0xe003
-
-#define INSN_16BIT_MASK		0x3
-
-#define INSN_IS_16BIT(insn)	(((insn) & INSN_16BIT_MASK) != INSN_16BIT_MASK)
-
-#define INSN_LEN(insn)		(INSN_IS_16BIT(insn) ? 2 : 4)
-
-#ifdef CONFIG_64BIT
-#define LOG_REGBYTES		3
-#else
-#define LOG_REGBYTES		2
-#endif
-#define REGBYTES		(1 << LOG_REGBYTES)
-
-#define SH_RD			7
-#define SH_RS1			15
-#define SH_RS2			20
-#define SH_RS2C			2
-#define MASK_RX			0x1f
-
-#define RVC_LW_IMM(x)		((RV_X(x, 6, 1) << 2) | \
-				 (RV_X(x, 10, 3) << 3) | \
-				 (RV_X(x, 5, 1) << 6))
-#define RVC_LD_IMM(x)		((RV_X(x, 10, 3) << 3) | \
-				 (RV_X(x, 5, 2) << 6))
-#define RVC_LWSP_IMM(x)		((RV_X(x, 4, 3) << 2) | \
-				 (RV_X(x, 12, 1) << 5) | \
-				 (RV_X(x, 2, 2) << 6))
-#define RVC_LDSP_IMM(x)		((RV_X(x, 5, 2) << 3) | \
-				 (RV_X(x, 12, 1) << 5) | \
-				 (RV_X(x, 2, 3) << 6))
-#define RVC_SWSP_IMM(x)		((RV_X(x, 9, 4) << 2) | \
-				 (RV_X(x, 7, 2) << 6))
-#define RVC_SDSP_IMM(x)		((RV_X(x, 10, 3) << 3) | \
-				 (RV_X(x, 7, 3) << 6))
-#define RVC_RS1S(insn)		(8 + RV_X(insn, SH_RD, 3))
-#define RVC_RS2S(insn)		(8 + RV_X(insn, SH_RS2C, 3))
-#define RVC_RS2(insn)		RV_X(insn, SH_RS2C, 5)
-
-#define SHIFT_RIGHT(x, y)		\
-	((y) < 0 ? ((x) << -(y)) : ((x) >> (y)))
-
-#define REG_MASK			\
-	((1 << (5 + LOG_REGBYTES)) - (1 << LOG_REGBYTES))
-
-#define REG_OFFSET(insn, pos)		\
-	(SHIFT_RIGHT((insn), (pos) - LOG_REGBYTES) & REG_MASK)
-
-#define REG_PTR(insn, pos, regs)	\
-	((ulong *)((ulong)(regs) + REG_OFFSET(insn, pos)))
-
-#define GET_FUNCT3(insn)	(((insn) >> 12) & 7)
-
-#define GET_RS1(insn, regs)	(*REG_PTR(insn, SH_RS1, regs))
-#define GET_RS2(insn, regs)	(*REG_PTR(insn, SH_RS2, regs))
-#define GET_RS1S(insn, regs)	(*REG_PTR(RVC_RS1S(insn), 0, regs))
-#define GET_RS2S(insn, regs)	(*REG_PTR(RVC_RS2S(insn), 0, regs))
-#define GET_RS2C(insn, regs)	(*REG_PTR(insn, SH_RS2C, regs))
-#define GET_SP(regs)		(*REG_PTR(2, 0, regs))
-#define SET_RD(insn, regs, val)	(*REG_PTR(insn, SH_RD, regs) = (val))
-#define IMM_I(insn)		((s32)(insn) >> 20)
-#define IMM_S(insn)		(((s32)(insn) >> 25 << 5) | \
-				 (s32)(((insn) >> 7) & 0x1f))
-
 struct insn_func {
 	unsigned long mask;
 	unsigned long match;

-- 
2.34.1


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Re: [PATCH v5 0/3] Move duplicated instructions macros into asm/insn.h

[Clément Léger]

On 20/06/2025 22:21, Alexandre Ghiti wrote:
> The instructions parsing macros were duplicated and one of them had different
> implementations, which is error prone.
> 
> So let's consolidate those macros in asm/insn.h.
> 
> v1: https://lore.kernel.org/linux-riscv/20250422082545.450453-1-alexghiti@rivosinc.com/
> v2: https://lore.kernel.org/linux-riscv/20250508082215.88658-1-alexghiti@rivosinc.com/
> v3: https://lore.kernel.org/linux-riscv/20250508125202.108613-1-alexghiti@rivosinc.com/
> v4: https://lore.kernel.org/linux-riscv/20250516140805.282770-1-alexghiti@rivosinc.com/
> 
> Changes in v5:
> - Rebase on top of 6.16-rc1
> 
> Changes in v4:
> - Rebase on top of for-next (on top of 6.15-rc6)
> 
> Changes in v3:
> - Fix patch 2 which caused build failures (linux riscv bot), but the
>   patchset is exactly the same as v2
> 
> Changes in v2:
> - Rebase on top of 6.15-rc5
> - Add RB tags
> - Define RV_X() using RV_X_mask() (Clément)
> - Remove unused defines (Clément)
> - Fix tabulations (Drew)
> 
> Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
> ---
> Alexandre Ghiti (3):
>       riscv: Fix typo EXRACT -> EXTRACT
>       riscv: Strengthen duplicate and inconsistent definition of RV_X()
>       riscv: Move all duplicate insn parsing macros into asm/insn.h
> 
>  arch/riscv/include/asm/insn.h          | 206 +++++++++++++++++++++++++++++----
>  arch/riscv/kernel/machine_kexec_file.c |   2 +-
>  arch/riscv/kernel/traps_misaligned.c   | 144 +----------------------
>  arch/riscv/kernel/vector.c             |   2 +-
>  arch/riscv/kvm/vcpu_insn.c             | 128 +-------------------
>  5 files changed, 188 insertions(+), 294 deletions(-)
> ---
> base-commit: 731e998c429974cb141a049c1347a9cab444e44c
> change-id: 20250620-dev-alex-insn_duplicate_v5_manual-2c23191c30fb
> 
> Best regards,

Hi Alex,

I already gave my Reviewed-by for the last two commits of this series in V4.

Thanks,

Clément

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Re: [PATCH v5 0/3] Move duplicated instructions macros into asm/insn.h

[Alexandre Ghiti]

On 6/23/25 10:07, Clément Léger wrote:
>
> On 20/06/2025 22:21, Alexandre Ghiti wrote:
>> The instructions parsing macros were duplicated and one of them had different
>> implementations, which is error prone.
>>
>> So let's consolidate those macros in asm/insn.h.
>>
>> v1: https://lore.kernel.org/linux-riscv/20250422082545.450453-1-alexghiti@rivosinc.com/
>> v2: https://lore.kernel.org/linux-riscv/20250508082215.88658-1-alexghiti@rivosinc.com/
>> v3: https://lore.kernel.org/linux-riscv/20250508125202.108613-1-alexghiti@rivosinc.com/
>> v4: https://lore.kernel.org/linux-riscv/20250516140805.282770-1-alexghiti@rivosinc.com/
>>
>> Changes in v5:
>> - Rebase on top of 6.16-rc1
>>
>> Changes in v4:
>> - Rebase on top of for-next (on top of 6.15-rc6)
>>
>> Changes in v3:
>> - Fix patch 2 which caused build failures (linux riscv bot), but the
>>    patchset is exactly the same as v2
>>
>> Changes in v2:
>> - Rebase on top of 6.15-rc5
>> - Add RB tags
>> - Define RV_X() using RV_X_mask() (Clément)
>> - Remove unused defines (Clément)
>> - Fix tabulations (Drew)
>>
>> Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
>> ---
>> Alexandre Ghiti (3):
>>        riscv: Fix typo EXRACT -> EXTRACT
>>        riscv: Strengthen duplicate and inconsistent definition of RV_X()
>>        riscv: Move all duplicate insn parsing macros into asm/insn.h
>>
>>   arch/riscv/include/asm/insn.h          | 206 +++++++++++++++++++++++++++++----
>>   arch/riscv/kernel/machine_kexec_file.c |   2 +-
>>   arch/riscv/kernel/traps_misaligned.c   | 144 +----------------------
>>   arch/riscv/kernel/vector.c             |   2 +-
>>   arch/riscv/kvm/vcpu_insn.c             | 128 +-------------------
>>   5 files changed, 188 insertions(+), 294 deletions(-)
>> ---
>> base-commit: 731e998c429974cb141a049c1347a9cab444e44c
>> change-id: 20250620-dev-alex-insn_duplicate_v5_manual-2c23191c30fb
>>
>> Best regards,
> Hi Alex,
>
> I already gave my Reviewed-by for the last two commits of this series in V4.


Sorry, I'll add them when I merge this patchset.

Thanks,

Alex


> Thanks,
>
> Clément
>
> _______________________________________________
> linux-riscv mailing list
> linux-riscv@lists.infradead.org
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Re: [PATCH v5 0/3] Move duplicated instructions macros into asm/insn.h

[patchwork-bot+linux-riscv]

Hello:

This series was applied to riscv/linux.git (for-next)
by Palmer Dabbelt <palmer@dabbelt.com>:

On Fri, 20 Jun 2025 20:21:56 +0000 you wrote:
> The instructions parsing macros were duplicated and one of them had different
> implementations, which is error prone.
> 
> So let's consolidate those macros in asm/insn.h.
> 
> v1: https://lore.kernel.org/linux-riscv/20250422082545.450453-1-alexghiti@rivosinc.com/
> v2: https://lore.kernel.org/linux-riscv/20250508082215.88658-1-alexghiti@rivosinc.com/
> v3: https://lore.kernel.org/linux-riscv/20250508125202.108613-1-alexghiti@rivosinc.com/
> v4: https://lore.kernel.org/linux-riscv/20250516140805.282770-1-alexghiti@rivosinc.com/
> 
> [...]

Here is the summary with links:
  - [v5,1/3] riscv: Fix typo EXRACT -> EXTRACT
    https://git.kernel.org/riscv/c/e2d02461b2e2
  - [v5,2/3] riscv: Strengthen duplicate and inconsistent definition of RV_X()
    https://git.kernel.org/riscv/c/771c94605d50
  - [v5,3/3] riscv: Move all duplicate insn parsing macros into asm/insn.h
    https://git.kernel.org/riscv/c/38b566b84cf6

You are awesome, thank you!
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