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Delay AMO rd write until store succeeds #141

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Delay AMO rd write until store succeeds #141

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21 changes: 11 additions & 10 deletions riscv.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1399,16 +1399,17 @@ static void op_jump_link(hart_t *vm, uint8_t rd, uint32_t addr)
}
}

#define AMO_OP(STORED_EXPR) \
do { \
value2 = vm->x_regs[decoded_rs2(decoded)]; \
mmu_load(vm, addr, RV_MEM_LW, &value, false); \
if (vm->error) \
return; \
set_dest_idx(vm, decoded_rd(decoded), value); \
mmu_store(vm, addr, RV_MEM_SW, (STORED_EXPR), false); \
if (vm->error) \
return; \
#define AMO_OP(STORED_EXPR) \
do { \
value2 = vm->x_regs[decoded_rs2(decoded)]; \
mmu_load(vm, addr, RV_MEM_LW, &value, false); \
if (vm->error) \
return; \
uint32_t stored = (STORED_EXPR); \
mmu_store(vm, addr, RV_MEM_SW, stored, false); \
if (vm->error) \
return; \
set_dest_idx(vm, decoded_rd(decoded), value); \
} while (0)

static void op_amo(hart_t *vm, const decoded_insn_t *decoded)
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