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.
Signed-off-by: Alexandre Ghiti <alexghiti@xxxxxxxxxxxx>
---
arch/riscv/include/asm/insn.h | 39 ++++++++++++++--------------
arch/riscv/kernel/elf_kexec.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 2a589a58b291..ac3e606feca2 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/elf_kexec.c b/arch/riscv/kernel/elf_kexec.c
index e783a72d051f..1c3b76a67356 100644
--- a/arch/riscv/kernel/elf_kexec.c
+++ b/arch/riscv/kernel/elf_kexec.c
@@ -21,6 +21,7 @@
#include <linux/memblock.h>
#include <linux/vmalloc.h>
#include <asm/setup.h>
+#include <asm/insn.h>
int arch_kimage_file_post_load_cleanup(struct kimage *image)
{
@@ -336,7 +337,6 @@ static void *elf_kexec_load(struct kimage *image, char *kernel_buf,
return ret ? ERR_PTR(ret) : NULL;
}
-#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 4354c87c0376..3d0e5eadfac3 100644
--- a/arch/riscv/kernel/traps_misaligned.c
+++ b/arch/riscv/kernel/traps_misaligned.c
@@ -17,6 +17,7 @@
#include <asm/hwprobe.h>
#include <asm/cpufeature.h>
#include <asm/vector.h>
+#include <asm/insn.h>
#define INSN_MATCH_LB 0x3
#define INSN_MASK_LB 0x707f
@@ -105,7 +106,6 @@
#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 97dec18e6989..62cb2ab4b636 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))
--
2.39.2
