1 files changed, 77 insertions, 0 deletions
diff --git a/prbwin.c b/prbwin.c
new file mode 100644
index 0000000..81ad626
--- /dev/null
+++ b/prbwin.c
@@ -0,0 +1,77 @@
+#include "sys.h"
+
+void *sys_alloc(u64 length)
+{
+	assert(length);
+	void *result = VirtualAlloc(0, length, MEM_COMMIT|MEM_RESERVE, PAGE_READWRITE);
+	return result;
+}
+
+void sys_free(void *memory, u64 length)
+{
+	assert(memory);
+	assert(length);
+	assert(VirtualFree(memory, 0, MEM_RELEASE));
+}
+
+void die(const char *error_string, ...)
+{
+	va_list args;
+	va_start(args, error_string);
+	printf("error: ");
+	vprintf(error_string, args);
+	printf("\n");
+	va_end(args);
+	exit(1);
+}
+
+void info(const char *format, ...)
+{
+	va_list args;
+	va_start(args, format);
+	vprintf(format, args);
+	putchar('\n');
+	va_end(args);
+}
+
+char *read_entire_file(struct arena *arena, u64 *len, const char *filename)
+{
+	HANDLE file = CreateFile(filename, GENERIC_READ, FILE_SHARE_READ,
+		0, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0);
+	if (file == INVALID_HANDLE_VALUE)
+		return 0;
+	LARGE_INTEGER lisize;
+	if (!GetFileSizeEx(file, &lisize))
+		goto error;
+	*len = lisize.QuadPart;
+	if (!*len)
+		goto error;
+	char *buffer = push_arena(arena, *len + 1);
+	DWORD bytes_read;
+	if (!ReadFile(file, *buffer, size, &bytes_read, 0)) {
+		pop_arena(arena, *len + 1);
+		goto error;
+	}
+	CloseHandle(file);
+	buffer[*len] = 0;
+	return buffer;
+error:
+	CloseHandle(file);
+	return 0;
+}
+
+char *get_exe_path(arena_t *arena)
+{
+	char path[max_path_len] = {0};
+	u32 len = GetModuleFileName(0, path, max_path_len);
+	if (!len)
+		return 0;
+	char *dir = strrchr(path, '\\');
+	if (!dir)
+		return path;
+	len = dir - path;
+	dir = push_arena(arena, len + 1);
+	memmove(dir, path, len);
+	dir[len] = 0;
+	return dir;
+}