PPC context header adjustments. (#123)

Restoring env to ctx was causing this because the return value was getting assigned to r3 before the if check.

XenonRecomp/recompiler.cpp

@@ -378,8 +378,9 @@ bool Recompiler::Recompile(
             else if (address == config.setJmpAddress)
             {
                 println("\t{} = ctx;", env());
-                println("\t{}.s64 = setjmp(*reinterpret_cast<jmp_buf*>(base + {}.u32));", r(3), r(3));
-                println("\tif ({}.s64 != 0) ctx = {};", r(3), env());
+                println("\t{}.s64 = setjmp(*reinterpret_cast<jmp_buf*>(base + {}.u32));", temp(), r(3));
+                println("\tif ({}.s64 != 0) ctx = {};", temp(), env());
+                println("\t{} = {};", r(3), temp());
             }
             else
             {

XenonUtils/ppc_context.h

@@ -123,9 +123,7 @@ struct PPCFuncMapping
 
 extern PPCFuncMapping PPCFuncMappings[];
 
-struct PPCRegister
-{
-    union
+union PPCRegister
 {
     int8_t s8;
     uint8_t u8;
@@ -138,7 +136,6 @@ struct PPCRegister
     float f32;
     double f64;
 };
-};
 
 struct PPCXERRegister
 {
@@ -194,9 +191,7 @@ struct PPCCRRegister
     }
 };
 
-struct alignas(0x10) PPCVRegister
-{
-    union
+union alignas(0x10) PPCVRegister
 {
     int8_t s8[16];
     uint8_t u8[16];
@@ -209,7 +204,6 @@ struct alignas(0x10) PPCVRegister
     float f32[4];
     double f64[2];
 };
-};
 
 #define PPC_ROUND_NEAREST 0x00
 #define PPC_ROUND_TOWARD_ZERO 0x01
@@ -270,7 +264,7 @@ struct PPCFPSCRRegister
     }
 };
 
-struct PPCContext
+struct alignas(0x40) PPCContext
 {
     PPCRegister r3;
 #ifndef PPC_CONFIG_NON_ARGUMENT_AS_LOCAL