misc: Use GCC builtins for byte-swap operations

[pcsx_rearmed.git] / libpcsxcore / misc.c

diff --git a/libpcsxcore/misc.c b/libpcsxcore/misc.c
index cd16c41..7aa4fef 100644 (file)
--- a/libpcsxcore/misc.c
+++ b/libpcsxcore/misc.c
@@ -21,6 +21,7 @@
 * Miscellaneous functions, including savestates and CD-ROM loading.
 */
 
+#include <stddef.h>
 #include "misc.h"
 #include "cdrom.h"
 #include "mdec.h"
@@ -57,14 +58,7 @@ struct iso_directory_record {
 void mmssdd( char *b, char *p )
 {
        int m, s, d;
-#if defined(__arm__)
-       unsigned char *u = (void *)b;
-       int block = (u[3] << 24) | (u[2] << 16) | (u[1] << 8) | u[0];
-#elif defined(__BIGENDIAN__)
-       int block = (b[0] & 0xff) | ((b[1] & 0xff) << 8) | ((b[2] & 0xff) << 16) | (b[3] << 24);
-#else
-       int block = *((int*)b);
-#endif
+       int block = SWAP32(*((uint32_t*) b));
 
        block += 150;
        m = block / 4500;                       // minutes
@@ -602,7 +596,8 @@ int SaveState(const char *file) {
        SaveFuncs.write(f, psxM, 0x00200000);
        SaveFuncs.write(f, psxR, 0x00080000);
        SaveFuncs.write(f, psxH, 0x00010000);
-       SaveFuncs.write(f, (void *)&psxRegs, sizeof(psxRegs));
+       // only partial save of psxRegisters to maintain savestate compat
+       SaveFuncs.write(f, &psxRegs, offsetof(psxRegisters, gteBusyCycle));
 
        // gpu
        gpufP = (GPUFreeze_t *)malloc(sizeof(GPUFreeze_t));
@@ -666,7 +661,8 @@ int LoadState(const char *file) {
        SaveFuncs.read(f, psxM, 0x00200000);
        SaveFuncs.read(f, psxR, 0x00080000);
        SaveFuncs.read(f, psxH, 0x00010000);
-       SaveFuncs.read(f, (void *)&psxRegs, sizeof(psxRegs));
+       SaveFuncs.read(f, &psxRegs, offsetof(psxRegisters, gteBusyCycle));
+       psxRegs.gteBusyCycle = psxRegs.cycle;
 
        if (Config.HLE)
                psxBiosFreeze(0);
@@ -677,7 +673,7 @@ int LoadState(const char *file) {
        GPU_freeze(0, gpufP);
        free(gpufP);
        if (HW_GPU_STATUS == 0)
-               HW_GPU_STATUS = GPU_readStatus();
+               HW_GPU_STATUS = SWAP32(GPU_readStatus());
 
        // spu
        SaveFuncs.read(f, &Size, 4);