amomin.w
Atomic MIN word
This instruction is defined by:
Synopsis
Atomically:
-
Load the word at address xs1
-
Write the sign-extended value into xd
-
Signed compare the least-significant word of register xs2 to the loaded value, and select the minimum value
-
Write the result to the address in xs1
Decode Variables
Bits<1> aq = $encoding[26];
Bits<1> rl = $encoding[25];
Bits<5> xs2 = $encoding[24:20];
Bits<5> xs1 = $encoding[19:15];
Bits<5> xd = $encoding[11:7];Execution
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Pruned, XLEN == 64
-
Original
if (implemented?(ExtensionName::A) && (misa.A == 1'b0)) {
raise(ExceptionCode::IllegalInstruction, mode(), $encoding);
}
XReg virtual_address = X[xs1];
X[xd] = amo<32>(virtual_address, X[xs2][31:0], AmoOperation::Min, aq, rl, $encoding);if (implemented?(ExtensionName::A) && (misa.A == 1'b0)) {
raise(ExceptionCode::IllegalInstruction, mode(), $encoding);
}
XReg virtual_address = X[xs1];
X[xd] = amo<32>(virtual_address, X[xs2][31:0], AmoOperation::Min, aq, rl, $encoding);