mirror of
https://github.com/zeldaret/oot.git
synced 2025-01-15 04:36:59 +00:00
ec70295357
* Move non-libultra libc functions to src/libc/ * Add explicit nops in delay slots * Don't rely on CPP expanding undefined macros to 0 * Delete old Makefile rules * Fix type of memset()
49 lines
1.1 KiB
C
49 lines
1.1 KiB
C
#include "ultra64.h"
|
|
|
|
/**
|
|
* memcpy: copies `len` bytes from memory starting at `src` to memory starting at `dest`. Expects the memory
|
|
* specified by `src` and `dest` to not overlap.
|
|
*
|
|
* @see libultra also has a memcpy().
|
|
*
|
|
* @param dest address of start of buffer writing to
|
|
* @param src address of start of buffer to read from
|
|
* @param len number of bytes to copy. (`s32` rather than the standard `size_t`)
|
|
*
|
|
* @return dest
|
|
*/
|
|
void* MemCpy(void* dest, const void* src, s32 len) {
|
|
u8* d = dest;
|
|
const u8* s = src;
|
|
|
|
while (len > 0) {
|
|
*d++ = *s++;
|
|
len--;
|
|
}
|
|
|
|
return dest;
|
|
}
|
|
|
|
/**
|
|
* memset: sets `len` bytes to `val` starting at address `dest`.
|
|
*
|
|
* @see There are two other memsets in this codebase, Lib_MemSet(), memset().
|
|
* This one is unused.
|
|
*
|
|
* @param dest address to start at
|
|
* @param val value to write (`s32`, but interpreted as `u8`)
|
|
* @param len number of bytes to write. (`s32` rather than the standard `size_t`)
|
|
*
|
|
* @return dest
|
|
*/
|
|
void* MemSet(void* dest, s32 val, s32 len) {
|
|
u8* d = dest;
|
|
s32 s = len;
|
|
|
|
while (s > 0) {
|
|
*d++ = val;
|
|
s--;
|
|
}
|
|
|
|
return dest;
|
|
}
|