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Handle misalignment properly in jump-link instruction #20

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Jul 22, 2023
Merged

Handle misalignment properly in jump-link instruction #20

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9 changes: 6 additions & 3 deletions riscv.c
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Original file line number Diff line number Diff line change
Expand Up @@ -677,9 +677,12 @@ static void do_jump(vm_t *vm, uint32_t addr)

static void op_jump_link(vm_t *vm, uint32_t insn, uint32_t addr)
{
/* TODO: If the jump fails (misalign), shall rd have to be updated? */
set_dest(vm, insn, vm->pc);
do_jump(vm, addr);
if (unlikely(addr & 0b11)) {
vm_set_exception(vm, RV_EXC_PC_MISALIGN, addr);
} else {
set_dest(vm, insn, vm->pc);
vm->pc = addr;
}
}

#define AMO_OP(STORED_EXPR) \
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