[PATCH v4 05/12] RISC-V: add auipc elements to parse_asm header

Heiko Stuebner heiko at sntech.de
Wed Dec 7 10:08:14 PST 2022


From: Heiko Stuebner <heiko.stuebner at vrull.eu>

Instruction parsing should not be done in individual code, but instead
supported by central

Right now kgdb and kprobes parse instructions and at least kprobes (and
the upcoming auipc+jalr alternative fixer-function) need the auipc
instruction.

Reviewed-by: Conor Dooley <conor.dooley at microchip.com>
Reviewed-by: Andrew Jones <ajones at ventanamicro.com>
Signed-off-by: Heiko Stuebner <heiko.stuebner at vrull.eu>
---
 arch/riscv/include/asm/parse_asm.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/riscv/include/asm/parse_asm.h b/arch/riscv/include/asm/parse_asm.h
index e8303250f598..28742eb19034 100644
--- a/arch/riscv/include/asm/parse_asm.h
+++ b/arch/riscv/include/asm/parse_asm.h
@@ -118,6 +118,7 @@
 #define RVC_C2_RD_OPOFF		7
 
 /* parts of opcode for RVG*/
+#define RVG_OPCODE_AUIPC	0x17
 #define RVG_OPCODE_BRANCH	0x63
 #define RVG_OPCODE_JALR		0x67
 #define RVG_OPCODE_JAL		0x6f
@@ -149,6 +150,7 @@
 #define RVG_FUNCT12_EBREAK	0x1
 #define RVG_FUNCT12_SRET	0x102
 
+#define RVG_MATCH_AUIPC		(RVG_OPCODE_AUIPC)
 #define RVG_MATCH_JALR		(RV_ENCODE_FUNCT3(JALR) | RVG_OPCODE_JALR)
 #define RVG_MATCH_JAL		(RVG_OPCODE_JAL)
 #define RVG_MATCH_BEQ		(RV_ENCODE_FUNCT3(BEQ) | RVG_OPCODE_BRANCH)
@@ -167,6 +169,7 @@
 #define RVC_MATCH_C_JALR	(RVC_ENCODE_FUNCT4(C_JALR) | RVC_OPCODE_C2)
 #define RVC_MATCH_C_EBREAK	(RVC_ENCODE_FUNCT4(C_EBREAK) | RVC_OPCODE_C2)
 
+#define RVG_MASK_AUIPC		(RV_INSN_OPCODE_MASK)
 #define RVG_MASK_JALR		(RV_INSN_FUNCT3_MASK | RV_INSN_OPCODE_MASK)
 #define RVG_MASK_JAL		(RV_INSN_OPCODE_MASK)
 #define RVC_MASK_C_JALR		(RVC_INSN_FUNCT4_MASK | RVC_INSN_J_RS2_MASK | RVC_INSN_OPCODE_MASK)
-- 
2.35.1




More information about the linux-riscv mailing list