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fixed RV32A Atomic Extension #20

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fixed RV32A Atomic Extension #20

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Binary file modified riscv-card.pdf
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22 changes: 12 additions & 10 deletions tex/extension.tex
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Original file line number Diff line number Diff line change
Expand Up @@ -50,16 +50,18 @@ \subsection*{RV32A Atomic Extension}
\begin{tabular}
{T | l | c | T | T | T | T } \hline
\rm Inst & Name & FMT & \rm Opcode & \rm funct3 & \rm funct5 & \rm Description (C) \\ \hline
lr.w & Load Reserved & R & 0101111 & 0x2 & 0x02 & rd = M[rs1], reserve M[rs1] \\
sc.w & Store Conditional & R & 0101111 & 0x2 & 0x03 & \parbox[t]{2.5in}{ if (reserved) \{ M[rs1] = rs2; rd = 0 \} \\
else \{ rd = 1 \}} \\
amoswap.w & Atomic Swap & R & 0101111 & 0x2 & 0x01 & rd = M[rs1]; swap(rd, rs2); M[rs1] = rd \\
amoadd.w & Atomic ADD & R & 0101111 & 0x2 & 0x00 & rd = M[rs1] + rs2; M[rs1] = rd \\
amoand.w & Atomic AND & R & 0101111 & 0x2 & 0x0C & rd = M[rs1] \& rs2; M[rs1] = rd \\
amoor.w & Atomic OR & R & 0101111 & 0x2 & 0x0A & rd = M[rs1] | rs2; M[rs1] = rd \\
amoxor.w & Atomix XOR & R & 0101111 & 0x2 & 0x04 & rd = M[rs1] \^{} rs2; M[rs1] = rd \\
amomax.w & Atomic MAX & R & 0101111 & 0x2 & 0x14 & rd = max(M[rs1], rs2); M[rs1] = rd \\
amomin.w & Atomic MIN & R & 0101111 & 0x2 & 0x10 & rd = min(M[rs1], rs2); M[rs1] = rd \\
lr.w & Load Reserved & R & 0101111 & 0x2 & 0x02 & rd = M[rs1]; reserved=1; \\
sc.w & Store Conditional & R & 0101111 & 0x2 & 0x03 & \parbox[t]{2.5in}{ if (reserved) \{ M[rs1] = rs2; rd = 0; \} \\
else \{ rd = 1; \}; reserved=0} \\
amoswap.w & Atomic Swap & R & 0101111 & 0x2 & 0x01 & rd = M[rs1]; M[rs1] = rs2 \\
amoadd.w & Atomic ADD & R & 0101111 & 0x2 & 0x00 & rd = M[rs1]; M[rs1] = rd + rs2\\
amoand.w & Atomic AND & R & 0101111 & 0x2 & 0x0C & rd = M[rs1]; M[rs1] = rd \& rs2\\
amoor.w & Atomic OR & R & 0101111 & 0x2 & 0x08 & rd = M[rs1]; M[rs1] = rd | rs2 \\
amoxor.w & Atomix XOR & R & 0101111 & 0x2 & 0x04 & rd = M[rs1]; M[rs1] = rd \^{} rs2\\
amomax.w & Atomic MAX & R & 0101111 & 0x2 & 0x14 & rd = M[rs1]; M[rs1] = max(rd, rs2) \\
amomin.w & Atomic MIN & R & 0101111 & 0x2 & 0x10 & rd = M[rs1]; M[rs1] = min(rd, rs2) \\
amomaxu.w & Atomic MAX (U) & R & 0101111 & 0x2 & 0x1c & rd = M[rs1]; M[rs1] = max(rd, rs2) \\
amominu.w & Atomic MIN (U) & R & 0101111 & 0x2 & 0x18 & rd = M[rs1]; M[rs1] = min(rd, rs2) \\
\hline
\end{tabular}
\end{center}
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