forked from AbleOS/ableos
1 KiB
1 KiB
C ABI (proposal)
C datatypes
C Type | Description | Size (B) |
---|---|---|
char | Character / byte | 8 |
short | Short integer | 16 |
int | Integer | 32 |
long | Long integer | 64 |
long long | Long long integer | 64 |
T* | Pointer | 64 |
float | Single-precision float | 32 |
double | Double-precision float | 64 |
long double | Extended-precision float | Bikeshed |
Registers
Register | ABI Name | Description | Saver |
---|---|---|---|
r0 |
— | Zero register | N/A |
r1 |
ra |
Return address | Caller |
r2 |
sp |
Stack pointer | Callee |
r3 |
tp |
Thread pointer | N/A |
TODO: Parameters
TODO: Saved
TODO: Temp