diff options
| -rw-r--r-- | mu_instructions | 23 |
1 files changed, 14 insertions, 9 deletions
diff --git a/mu_instructions b/mu_instructions index e0df3496..1037e8e3 100644 --- a/mu_instructions +++ b/mu_instructions @@ -166,24 +166,29 @@ var/reg: (addr T) <- address var2: T Array operations (TODO: bounds-checking) -var/reg <- length arr/reg2: (addr array T) - => "8b/-> *" reg2 " " reg "/r32" -var/reg <- index arr/rega: (addr array T), idx/regi: int # if size(T) is 4 or 8 - => "8d/copy-address *(" rega "+" regi "<<" log2(size(T)) "+4) " reg "/r32" +var/reg <- index arr/rega: (addr array T), idx/regi: int + | if size-of(T) is 4 or 8 + => "8d/copy-address *(" rega "+" regi "<<" log2(size-of(T)) "+4) " reg "/r32" var/reg <- index arr: (array T sz), idx/regi: int - => "8d/copy-address *(ebp+" regi "<<" log2(size(T)) "+" (arr.stack-offset + 4) ") " reg "/r32" + => "8d/copy-address *(ebp+" regi "<<" log2(size-of(T)) "+" (arr.stack-offset + 4) ") " reg "/r32" var/reg <- index arr/rega: (addr array T), n - => "8d/copy-address *(" rega "+" (n*size(T)+4) ") " reg "/r32" + => "8d/copy-address *(" rega "+" (n*size-of(T)+4) ") " reg "/r32" var/reg <- index arr: (array T sz), n - => "8d/copy-address *(ebp+" (arr.stack-offset+4+n*size(T)) ") " reg "/r32" + => "8d/copy-address *(ebp+" (arr.stack-offset+4+n*size-of(T)) ") " reg "/r32" var/reg: (offset T) <- compute-offset arr: (addr array T), idx/regi: int # arr can be in reg or mem - => "69/multiply %" regi " " size(T) "/imm32 " reg "/r32" + => "69/multiply %" regi " " size-of(T) "/imm32 " reg "/r32" var/reg: (offset T) <- compute-offset arr: (addr array T), idx: int # arr can be in reg or mem - => "69/multiply *(ebp+" idx.stack-offset ") " size(T) "/imm32 " reg "/r32" + => "69/multiply *(ebp+" idx.stack-offset ") " size-of(T) "/imm32 " reg "/r32" var/reg <- index arr/rega: (addr array T), o/rego: offset => "8d/copy-address *(" rega "+" rego "+4) " reg "/r32" +Computing the length of an array can get complex. + +var/reg <- length arr/reg2: (addr array T) + | if T is byte (TODO) + => "8b/-> *" reg2 " " reg "/r32" + # User-defined types If a record (product) type T was defined to have elements a, b, c, ... of |