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Valentin Haudiquet 2023-10-19 20:55:36 +02:00
parent ce89df1ed4
commit 3f6657fe00
1 changed files with 0 additions and 3 deletions
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3
src/cpu/rv32cpu.c
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@ -501,7 +501,6 @@ static void cpu_execute(rv32_cpu_t* cpu, instruction_t* instruction)
case OPCODE_NOP: case OPCODE_NOP:
{ {
// TODO : Implement PAUSE, FENCE, FENCE.TSO // TODO : Implement PAUSE, FENCE, FENCE.TSO
// fprintf(stderr, "Warning: Unsupported NOP instruction\n");
break; break;
} }
case OPCODE_SYSTEM: case OPCODE_SYSTEM:
@ -602,14 +601,12 @@ static void cpu_execute(rv32_cpu_t* cpu, instruction_t* instruction)
// Load-Reserved Word // Load-Reserved Word
cpu->regs.x[instruction->rd] = mem_read32(address); cpu->regs.x[instruction->rd] = mem_read32(address);
// TODO register reservation set that subsumes the bytes in word // TODO register reservation set that subsumes the bytes in word
// fprintf(stderr, "LR.W\n");
break; break;
case FUNC75_SCW: case FUNC75_SCW:
// Store-Conditional Word // Store-Conditional Word
// TODO succeed only if the reservation is still valid and the reservation set contains the bytes written // TODO succeed only if the reservation is still valid and the reservation set contains the bytes written
mem_write32(address, cpu->regs.x[instruction->rs2]); mem_write32(address, cpu->regs.x[instruction->rs2]);
cpu->regs.x[instruction->rd] = 0; // TODO write 1 in rd on failure cpu->regs.x[instruction->rd] = 0; // TODO write 1 in rd on failure
// fprintf(stderr, "SC.W\n");
break; break;
case FUNC75_AMOSWAPW: case FUNC75_AMOSWAPW:
// Atomic Memory Operation SWAP Word // Atomic Memory Operation SWAP Word