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/* -------------------------------------------
Copyright (C) 2024-2025, Amlal El Mahrouss, licensed under the Apache 2.0 license.
------------------------------------------- */
#include <BootKit/BootKit.h>
#include <BootKit/Support.h>
#include <FirmwareKit/EFI/API.h>
#include <FirmwareKit/EFI/EFI.h>
#include <FirmwareKit/Handover.h>
#include <KernelKit/MSDOS.h>
#include <KernelKit/PE.h>
#ifdef __BOOTZ_STANDALONE__
/// @brief memset definition in C++.
/// @param dst destination pointer.
/// @param byte value to fill in.
/// @param len length of of src.
EXTERN_C VoidPtr memnset(void* dst, int byte, long long unsigned int len,
long long unsigned int dst_size) {
if (!dst || len > dst_size) {
// For now, we return nullptr or an error status.
return nullptr;
}
unsigned char* p = (unsigned char*) dst;
unsigned char val = (unsigned char) byte;
for (size_t i = 0UL; i < len; ++i) {
p[i] = val;
}
return dst;
}
/// @brief memcpy definition in C++.
/// @param dst destination pointer.
/// @param src source pointer.
/// @param len length of of src.
EXTERN_C VoidPtr memncpy(void* dst, const void* src, long long unsigned int len,
long long unsigned int dst_size) {
if (!dst || !src || len > dst_size) {
// Similar to memset, this is a critical failure.
return nullptr;
}
unsigned char* d = (unsigned char*) dst;
const unsigned char* s = (const unsigned char*) src;
for (size_t i = 0UL; i < len; ++i) {
d[i] = s[i];
}
return dst;
}
/// @brief strlen definition in C++.
EXTERN_C size_t strnlen(const char* whatToCheck, size_t max_len) {
size_t len = 0;
while (len < max_len && whatToCheck[len] != '\0') {
++len;
}
return len;
}
/// @brief strcmp definition in C++.
EXTERN_C int strncmp(const char* whatToCheck, const char* whatToCheckRight, size_t max_len) {
size_t i = 0;
while (i < max_len && whatToCheck[i] == whatToCheckRight[i]) {
if (whatToCheck[i] == '\0') return 0;
++i;
}
if (i == max_len) {
return 0;
}
return (unsigned char) whatToCheck[i] - (unsigned char) whatToCheckRight[i];
}
/// @brief something specific to the Microsoft's ABI, When the stack grows too big.
EXTERN_C void ___chkstk_ms(void) {}
/// @note GCC expects them to be here.
/// @brief memset definition in C++.
/// @param dst destination pointer.
/// @param byte value to fill in.
/// @param len length of of src.
EXTERN_C VoidPtr memset(void* dst, int byte, long long unsigned int len) {
for (size_t i = 0UL; i < len; ++i) {
((int*) dst)[i] = byte;
}
return dst;
}
/// @brief memcpy definition in C++.
/// @param dst destination pointer.
/// @param src source pointer.
/// @param len length of of src.
EXTERN_C VoidPtr memcpy(void* dst, const void* src, long long unsigned int len) {
for (size_t i = 0UL; i < len; ++i) {
((int*) dst)[i] = ((int*) src)[i];
}
return dst;
}
/// @brief strlen definition in C++.
EXTERN_C size_t strlen(const char* whatToCheck) {
SizeT len = 0;
while (whatToCheck[len] != 0) {
++len;
}
return len;
}
/// @brief strcmp definition in C++.
EXTERN_C int strcmp(const char* whatToCheck, const char* whatToCheckRight) {
SizeT len = 0;
while (whatToCheck[len] == whatToCheckRight[len]) {
if (whatToCheck[len] == 0) return 0;
++len;
}
return len;
}
#endif
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