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MRET jump support

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This commit is contained in:
Valentin Haudiquet
2023-10-11 19:25:06 +02:00
parent c421595a95
commit 31941c0813
1 changed files with 3 additions and 1 deletions
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4
src/cpu/rv32cpu.c
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@@ -522,7 +522,9 @@ static void cpu_execute(rv32_cpu_t* cpu, instruction_t* instruction)
fprintf(stderr, "SRET: We don't support that.\n"); fprintf(stderr, "SRET: We don't support that.\n");
break; break;
case IMM_MRET: case IMM_MRET:
fprintf(stderr, "MRET: We don't support that.\n"); // Act like a normal ret/jalr, with destination address being CSR_MEPC content
fprintf(stderr, "Warning: MRET: We don't support privilege mode change\n");
cpu->pc = cpu->csr[CSR_MEPC] - 4;
break; break;
default: default:
switch(instruction->func7) switch(instruction->func7)