klibc: Use builtins for memcpy and similar

include/klibc/string.h

@@ -5,24 +5,19 @@
 #include <menix/common.h>
 
 // Copies a string to a buffer. Both sizes must be known at compile time.
-#define fixed_strncpy(dst, src) memcpy(dst, src, MIN(sizeof(dst), sizeof(src)));
+#define fixed_strncpy(dst, src) memcpy(dst, src, MIN(sizeof(dst), sizeof(src)))
 
 i32 memcmp(const void* s1, const void* s2, usize len);
 
 // Copies `len` bytes from `src` to `dst`. Pointers may not overlap.
 void* memcpy(void* restrict dst, const void* restrict src, usize len);
 
-// Copies `len` 32-bit integers from `src` to `dst`. Pointers may not overlap.
-void* memcpy32(void* restrict dst, const void* restrict src, usize len);
-
 // Copies `len` bytes from `src` to `dst`.
 void* memmove(void* dst, const void* src, usize len);
 
 // Sets `len` bytes to `val`, starting at dst.
 void* memset(void* dst, u8 val, usize len);
 
-// Sets `len` 32-bit integers to `value`, starting at `dst`.
-void* memset32(void* dst, u32 value, usize size);
 usize strlen(const char* src);
 usize strnlen(const char* src, usize len);
 char* strdup(const char* src);

kernel/system/video/fb_defaults.c

@@ -64,10 +64,7 @@ void fb_default_draw_region(FrameBuffer* fb, FbDrawRegion* args)
 		void* addr_dst = (void*)fb->info.mmio_base + (mode->pitch * (args->y_src + y)) + (args->x_src * mode->cpp);
 
 		// Copy a single line.
-		if (mode->cpp == sizeof(u32))
-			memcpy32(addr_dst, addr_src, args->width);
-		else
-			memcpy(addr_dst, addr_src, args->width * mode->cpp);
+		memcpy(addr_dst, addr_src, args->width * mode->cpp);
 	}
 }
 
@@ -82,9 +79,6 @@ void fb_default_update_region(FrameBuffer* fb, FbUpdateRegion* args)
 		const usize offset = ((mode->pitch * (args->y_src + y)) + (mode->cpp * (args->x_src)));
 
 		// Copy a single line.
-		if (mode->cpp == sizeof(u32))
-			memcpy32((void*)fb->info.mmio_base + offset, (void*)args->back_buffer + offset, args->width);
-		else
-			memcpy((void*)fb->info.mmio_base + offset, (void*)args->back_buffer + offset, args->width * mode->cpp);
+		memcpy((void*)fb->info.mmio_base + offset, (void*)args->back_buffer + offset, args->width * mode->cpp);
 	}
 }

modules/drv/video/fbcon/main.c

@@ -85,7 +85,6 @@ MODULE_FN void fbcon_putchar(u32 ch)
 
 	// Mark this region as modified. If we've exceeded the limit, force a redraw.
 	if (update_count >= UPDATE_QUEUE_MAX)
-
 		fbcon_copy_screen();
 	else
 	{

toolchain/compiler/common.cmake

@@ -3,17 +3,12 @@
 # Common options
 target_compile_options(common INTERFACE
 	-ffreestanding
-	-nostdlib
 	-fno-omit-frame-pointer
-	-fno-builtin
-	-fno-stack-protector
-	-fno-stack-check
 	-Wall
 	-Werror
 )
 target_link_options(common INTERFACE
 	-nostdlib
-	"SHELL:-z max-page-size=${max_page_size}"
 	"SHELL:-z noexecstack"
 	-Wl,--build-id=none
 )