-unsigned int p32x_sh2_read8(unsigned int a, SH2 *sh2);\r
-unsigned int p32x_sh2_read16(unsigned int a, SH2 *sh2);\r
-unsigned int p32x_sh2_read32(unsigned int a, SH2 *sh2);\r
-void p32x_sh2_write8(unsigned int a, unsigned int d, SH2 *sh2);\r
-void p32x_sh2_write16(unsigned int a, unsigned int d, SH2 *sh2);\r
-void p32x_sh2_write32(unsigned int a, unsigned int d, SH2 *sh2);\r
+#if !defined(REGPARM) && defined(__i386__) \r
+#define REGPARM(x) __attribute__((regparm(x)))\r
+#else\r
+#define REGPARM(x)\r
+#endif\r
+\r
+unsigned int REGPARM(2) p32x_sh2_read8(unsigned int a, SH2 *sh2);\r
+unsigned int REGPARM(2) p32x_sh2_read16(unsigned int a, SH2 *sh2);\r
+unsigned int REGPARM(2) p32x_sh2_read32(unsigned int a, SH2 *sh2);\r
+void REGPARM(3) p32x_sh2_write8(unsigned int a, unsigned int d, SH2 *sh2);\r
+void REGPARM(3) p32x_sh2_write16(unsigned int a, unsigned int d, SH2 *sh2);\r
+void REGPARM(3) p32x_sh2_write32(unsigned int a, unsigned int d, SH2 *sh2);\r