amomin.d
Atomic MIN doubleword
This instruction is defined by:
Synopsis
Atomically:
-
Load the doubleword at address rs1
-
Write the loaded value into rd
-
Signed compare the value of register rs2 to the loaded value, and select the mimimum value
-
Write the minimum to the address in rs1
Decode Variables
Bits<1> aq = $encoding[26];
Bits<1> rl = $encoding[25];
Bits<5> rs2 = $encoding[24:20];
Bits<5> rs1 = $encoding[19:15];
Bits<5> rd = $encoding[11:7];Execution
-
Pruned, XLEN == 64
-
Original
XReg virtual_address = X[rs1];
X[rd] = amo<64>(virtual_address, X[rs2], AmoOperation::Min, aq, rl, $encoding);if (implemented?(ExtensionName::A) && (CSR[misa].A == 1'b0)) {
raise(ExceptionCode::IllegalInstruction, mode(), $encoding);
}
XReg virtual_address = X[rs1];
X[rd] = amo<64>(virtual_address, X[rs2], AmoOperation::Min, aq, rl, $encoding);