diff options
Diffstat (limited to 'src/main.S')
| -rw-r--r-- | src/main.S | 50 |
1 files changed, 41 insertions, 9 deletions
@@ -9,16 +9,22 @@ // callee-saved: RBX, RSP, RBP, R12-R15 .section .rodata - failed_to_create_window: .string "Window could not be created\nSDL_error: %s\n" - failed_to_initialize_sdl: .string "SDL could not be initialized\nSDL_error: %s\n" - greeting: .string "Hello, SDL!\n" - window_title: .string "snake.s" + failed_to_create_renderer: .string "Renderer could not be created\nSDL_error: %s\n" + failed_to_create_window: .string "Window could not be created\nSDL_error: %s\n" + failed_to_initialize_sdl: .string "SDL could not be initialized\nSDL_error: %s\n" + + succeeded_to_create_renderer: .string "Renderer created successfully!\n" + succeeded_to_create_window: .string "Window created successfully!\n" + succeeded_to_initialize_sdl: .string "SDL2 initialized successfully!\n" + + window_title: .string "snake.s" .section .text function_begin main define_local window_handle, 8 + define_local renderer_handle, 8 allocate_locals // initialize SDL @@ -33,6 +39,9 @@ mov $1, %rax function_exit 1: + lea succeeded_to_initialize_sdl(%rip), %rdi + xor %rax, %rax + call printf@PLT // create a window lea window_title(%rip), %rdi @@ -42,7 +51,6 @@ mov $SCREEN_HEIGHT, %r8 mov $SDL_WINDOW_SHOWN, %r9 call SDL_CreateWindow@PLT - store_local %rax, window_handle // check if window creation was successful @@ -53,16 +61,40 @@ mov $1, %rax function_exit 1: + lea succeeded_to_create_window(%rip), %rdi + xor %rax, %rax + call printf@PLT + // create a renderer load_local window_handle, %rdi - call SDL_DestroyWindow@PLT - - call SDL_Quit@PLT + mov $-1, %rsi + mov $SDL_RENDERER_ACCELERATED, %rdx + call SDL_CreateRenderer@PLT + store_local %rax, renderer_handle - lea greeting(%rip), %rdi + // check if renderer creation was successful + test %rax, %rax + jne 1f + lea failed_to_create_renderer(%rip), %rdi + call _print_sdl_error@PLT + jmp .Ldestroy_window + 1: + lea succeeded_to_create_renderer(%rip), %rdi xor %rax, %rax call printf@PLT + .Ldestroy_renderer: + // destroy the renderer + load_local renderer_handle, %rdi + call SDL_DestroyRenderer + + .Ldestroy_window: + // destroy the window + load_local window_handle, %rdi + call SDL_DestroyWindow@PLT + + call SDL_Quit@PLT + xor %rax, %rax function_end |