From 8d27b09d0877982dc2252c01a3f1d9c631b2d6eb Mon Sep 17 00:00:00 2001 From: Jan Beulich Date: Mon, 7 Aug 2023 11:56:50 +0200 Subject: [PATCH] RISC-V: move comment describing rules for riscv_opcodes[] It makes little sense to have this comment meanwhile over a hundred lines ahead of the array. In fact until spotting the comment, I was wondering why those pretty important aspects aren't spelled out anywhere. --- opcodes/riscv-opc.c | 20 ++++++++++---------- 1 file changed, 10 insertions(+), 10 deletions(-) diff --git a/opcodes/riscv-opc.c b/opcodes/riscv-opc.c index 6a85473..3efab9a 100644 --- a/opcodes/riscv-opc.c +++ b/opcodes/riscv-opc.c @@ -131,16 +131,6 @@ const float riscv_fli_numval[32] = 0x1p+3, 0x1p+4, 0x1p+7, 0x1p+8, 0x1p+15, 0x1p+16, 0x0p+0, 0x0p+0 }; -/* The order of overloaded instructions matters. Label arguments and - register arguments look the same. Instructions that can have either - for arguments must apear in the correct order in this table for the - assembler to pick the right one. In other words, entries with - immediate operands must apear after the same instruction with - registers. - - Because of the lookup algorithm used, entries with the same opcode - name must be contiguous. */ - #define MASK_RS1 (OP_MASK_RS1 << OP_SH_RS1) #define MASK_RS2 (OP_MASK_RS2 << OP_SH_RS2) #define MASK_RD (OP_MASK_RD << OP_SH_RD) @@ -329,6 +319,16 @@ match_th_load_pair(const struct riscv_opcode *op, return rd1 != rd2 && rd1 != rs && rd2 != rs && match_opcode (op, insn); } +/* The order of overloaded instructions matters. Label arguments and + register arguments look the same. Instructions that can have either + for arguments must apear in the correct order in this table for the + assembler to pick the right one. In other words, entries with + immediate operands must apear after the same instruction with + registers. + + Because of the lookup algorithm used, entries with the same opcode + name must be contiguous. */ + const struct riscv_opcode riscv_opcodes[] = { /* name, xlen, isa, operands, match, mask, match_func, pinfo. */ -- 2.7.4