feat: use FNV in libSystem's syscall routing.

fix: Add legacy string.h functions back, for GCC.

Signed-off-by: Amlal El Mahrouss <amlal@nekernel.org>

1 files changed, 54 insertions, 4 deletions

diff --git a/dev/boot/src/BootSupport.cc b/dev/boot/src/BootSupport.cc
index 7cf7af95..96c6594e 100644
--- a/dev/boot/src/BootSupport.cc
+++ b/dev/boot/src/BootSupport.cc
@@ -18,7 +18,7 @@
 /// @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, long long unsigned int dst_size) {
+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;
@@ -35,7 +35,7 @@ EXTERN_C VoidPtr memset(void* dst, int byte, long long unsigned int len, long lo
 /// @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, long long unsigned int dst_size) {
+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;
@@ -49,7 +49,7 @@ EXTERN_C VoidPtr memcpy(void* dst, const void* src, long long unsigned int len,
 }
 
 /// @brief strlen definition in C++.
-EXTERN_C size_t strlen(const char* whatToCheck, size_t max_len) {
+EXTERN_C size_t strnlen(const char* whatToCheck, size_t max_len) {
   size_t len = 0;
   while (len < max_len && whatToCheck[len] != '\0') {
     ++len;
@@ -58,7 +58,7 @@ EXTERN_C size_t strlen(const char* whatToCheck, size_t max_len) {
 }
 
 /// @brief strcmp definition in C++.
-EXTERN_C int strcmp(const char* whatToCheck, const char* whatToCheckRight, size_t max_len) {
+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;
@@ -73,4 +73,54 @@ EXTERN_C int strcmp(const char* whatToCheck, const char* whatToCheckRight, size_
 /// @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