NO_SDL define

2 files changed, 53 insertions, 41 deletions

diff --git a/build.sh b/build.sh
index d742611..b48d718 100755
--- a/build.sh
+++ b/build.sh
@@ -2,6 +2,6 @@
 CFLAGS='-std=c99 -Wall -Wextra -O3 -s'
 [ "$CC" = "" ] && CC=gcc
 printf 'orgaasm\n'
-$CC $CFLAGS -o orgaasm src/orgaasm.c
+$CC $CFLAGS $1 -o orgaasm src/orgaasm.c
 printf 'orgaemu\n'
 $CC $CFLAGS -o orgaemu src/orgaemu.c $@ -lSDL2
diff --git a/src/orgaemu.c b/src/orgaemu.c
index 09fd453..189f88c 100644
--- a/src/orgaemu.c
+++ b/src/orgaemu.c
@@ -2,7 +2,6 @@
 #include <stdarg.h>
 #include <stdio.h>
 #include <stdint.h>
-#include <SDL2/SDL.h>
 
 #ifdef EMBED_ROM
 #include "rom.h"
@@ -12,6 +11,12 @@
 
 #define MEM_SIZE 0xffff
 
+static uint16_t *mem = NULL, *stack = NULL, *rstack = NULL;
+static size_t stack_ptr = 0, rstack_ptr = 0;
+
+#ifndef NO_SDL
+#include <SDL2/SDL.h>
+
 static const uint16_t buttons[SDL_NUM_SCANCODES] = {
 	[SDL_SCANCODE_BACKSPACE] = 1 << 2,
 	[SDL_SCANCODE_RETURN] = 1 << 3,
@@ -31,51 +36,12 @@ static const uint16_t buttons[SDL_NUM_SCANCODES] = {
 	[SDL_SCANCODE_RIGHT] = 1 << 7,
 };
 
-static uint16_t *mem = NULL, *stack = NULL, *rstack = NULL;
-static size_t stack_ptr = 0, rstack_ptr = 0;
 static SDL_Window *window = NULL;
 static SDL_Renderer *renderer = NULL;
 static SDL_Texture *target = NULL;
 static Uint64 next_time = 0;
 
 static int
-fail(void)
-{
-	if (target != NULL)
-		SDL_DestroyTexture(target);
-	if (renderer != NULL)
-		SDL_DestroyRenderer(renderer);
-	if (window != NULL)
-		SDL_DestroyWindow(window);
-	SDL_Quit();
-	if (mem != NULL)
-		free(mem);
-	if (stack != NULL)
-		free(stack);
-	if (rstack != NULL)
-		free(rstack);
-	return 1;
-}
-
-static void
-error(const char *fmt, ...)
-{
-	char buf[256] = {0};
-	va_list va;
-	va_start(va, fmt);
-	vsnprintf(buf, sizeof(buf) - 1, fmt, va);
-	va_end(va);
-	SDL_ShowSimpleMessageBox(SDL_MESSAGEBOX_ERROR, "orgaemu", buf, window);
-	fprintf(stderr, "%s\n", buf);
-}
-
-static uint16_t
-get_short(const unsigned char *s)
-{
-	return s[0] | (s[1] * 0x0100);
-}
-
-static int
 cycle_events(uint16_t *input)
 {
 	SDL_Event e;
@@ -148,6 +114,48 @@ render(uint16_t *mem)
 
 	SDL_RenderPresent(renderer);
 }
+#endif
+
+static uint16_t
+get_short(const unsigned char *s)
+{
+	return s[0] | (s[1] * 0x0100);
+}
+
+static int
+fail(void)
+{
+#ifndef NO_SDL
+	if (target != NULL)
+		SDL_DestroyTexture(target);
+	if (renderer != NULL)
+		SDL_DestroyRenderer(renderer);
+	if (window != NULL)
+		SDL_DestroyWindow(window);
+	SDL_Quit();
+#endif
+	if (mem != NULL)
+		free(mem);
+	if (stack != NULL)
+		free(stack);
+	if (rstack != NULL)
+		free(rstack);
+	return 1;
+}
+
+static void
+error(const char *fmt, ...)
+{
+	char buf[256] = {0};
+	va_list va;
+	va_start(va, fmt);
+	vsnprintf(buf, sizeof(buf) - 1, fmt, va);
+	va_end(va);
+	fprintf(stderr, "%s\n", buf);
+#ifndef NO_SDL
+	SDL_ShowSimpleMessageBox(SDL_MESSAGEBOX_ERROR, "orgaemu", buf, window);
+#endif
+}
 
 static void
 push(uint16_t v)
@@ -342,9 +350,11 @@ exec_op(uint16_t *mem, long pc)
 		return pc + 1;
 	}
 	case OP_SLP:
+#ifndef NO_SDL
 		if (cycle_events(mem + 0xbffe))
 			return MEM_SIZE;
 		render(mem + 0xbfff);
+#endif
 		return pc + 1;
 	case OP_INC:
 		push(pop() + 1);
@@ -427,6 +437,7 @@ main(int argc, char **argv)
 		return fail();
 	}
 
+#ifndef NO_SDL
 	if (SDL_Init(SDL_INIT_VIDEO) < 0) {
 		fprintf(stderr, "%s\n", SDL_GetError());
 		return fail();
@@ -443,6 +454,7 @@ main(int argc, char **argv)
 		return fail();
 	}
 	next_time = SDL_GetTicks64();
+#endif
 
 	exec_data(mem);
 	return fail(), 0;