workingHEADmaster

1 files changed, 10 insertions, 2 deletions

diff --git a/mknes_sdl.c b/mknes_sdl.c
index 98776b5..f7d94c4 100644
--- a/mknes_sdl.c
+++ b/mknes_sdl.c
@@ -108,7 +108,15 @@ int main(int argc, char **argv) {
 	init_opcode_lut();
 	init_opcode_ud_lut();
 
-	struct nes_state *nstate = aligned_alloc(4096, (sizeof(struct nes_state) + 4095) & ~4095);
+	size_t nstate_size = (sizeof(struct nes_state) + 4095) & ~4095; // Round up to page size
+	struct nes_state *nstate = mmap(NULL, nstate_size,
+	                                PROT_READ | PROT_WRITE,
+	                                MAP_PRIVATE | MAP_ANONYMOUS | MAP_POPULATE | MAP_LOCKED,
+	                                -1, 0);
+	if (nstate == MAP_FAILED) {
+		perror("mmap nstate failed");
+		exit(1);
+	}
 
 #ifdef BENCHMARK
 	// Run benchmark with configurable parameters
@@ -354,7 +362,7 @@ int main(int argc, char **argv) {
 	for(int i = 0; i < 4; i++) {
 		free(debug_nt_buffer[i]);
 	}
-	free(nstate);
+	munmap(nstate, nstate_size);
 	timer_shutdown();
 
 	for(int i = 0; i < 4; i++) {