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Annotation of uae/src/md-i386-gcc/maccess.h, revision 1.1

1.1     ! root        1:  /* 
        !             2:   * UAE - The Un*x Amiga Emulator
        !             3:   * 
        !             4:   * Memory access functions
        !             5:   *
        !             6:   * Copyright 1996 Bernd Schmidt
        !             7:   */
        !             8: 
        !             9: static __inline__ uae_u32 do_get_mem_long (uae_u32 *a)
        !            10: {
        !            11:     uae_u32 retval;
        !            12: 
        !            13:     __asm__ ("bswapl %0" : "=r" (retval) : "0" (*a) : "cc");
        !            14:     return retval;
        !            15: }
        !            16: 
        !            17: static __inline__ uae_u32 do_get_mem_word (uae_u16 *a)
        !            18: {
        !            19:     uae_u32 retval;
        !            20: 
        !            21: #ifdef X86_PPRO_OPT
        !            22:     __asm__ ("movzwl %w1,%k0\n\tshll $16,%k0\n\tbswapl %k0\n" : "=&r" (retval) : "m" (*a) : "cc");
        !            23: #else
        !            24:     __asm__ ("xorl %k0,%k0\n\tmovw %w1,%w0\n\trolw $8,%w0" : "=&r" (retval) : "m" (*a) : "cc");
        !            25: #endif
        !            26:     return retval;
        !            27: }
        !            28: 
        !            29: #define HAVE_GET_WORD_UNSWAPPED
        !            30: 
        !            31: #define do_get_mem_word_unswapped(a) ((uae_u32)*((uae_u16 *)a))
        !            32: #define do_get_mem_byte(a) ((uae_u32)*((uae_u8 *)a))
        !            33: 
        !            34: static __inline__ void do_put_mem_long (uae_u32 *a, uae_u32 v)
        !            35: {
        !            36:     __asm__ ("bswapl %0" : "=r" (v) : "0" (v) : "cc");
        !            37:     *a = v;
        !            38: }
        !            39: 
        !            40: static __inline__ void do_put_mem_word (uae_u16 *a, uae_u32 v)
        !            41: {
        !            42: #ifdef X86_PPRO_OPT
        !            43:     __asm__ ("bswapl %0" : "=&r" (v) : "0" (v << 16) : "cc");
        !            44: #else
        !            45:     __asm__ ("rolw $8,%0" : "=r" (v) : "0" (v) : "cc");
        !            46: #endif
        !            47:     *a = v;
        !            48: }
        !            49: 
        !            50: #define do_put_mem_byte(a,v) (*(uae_u8 *)(a) = (v))
        !            51: 
        !            52: #if 0
        !            53: static __inline__ uae_u32 call_mem_get_func(mem_get_func func, uae_cptr addr)
        !            54: {
        !            55:     uae_u32 result;
        !            56:     __asm__("call *%1"
        !            57:            : "=a" (result) : "r" (func), "a" (addr) : "cc", "edx", "ecx");
        !            58:     return result;
        !            59: }
        !            60: 
        !            61: static __inline__ void call_mem_put_func(mem_put_func func, uae_cptr addr, uae_u32 v)
        !            62: {
        !            63:     __asm__("call *%2"
        !            64:            : : "a" (addr), "d" (v), "r" (func) : "cc", "eax", "edx", "ecx", "memory");
        !            65: }
        !            66: #else
        !            67: 
        !            68: #define call_mem_get_func(func,addr) ((*func)(addr))
        !            69: #define call_mem_put_func(func,addr,v) ((*func)(addr,v))
        !            70: 
        !            71: #endif
        !            72: 
        !            73: #undef NO_INLINE_MEMORY_ACCESS
        !            74: #undef MD_HAVE_MEM_1_FUNCS
        !            75: 
        !            76: #ifdef MD_HAVE_MEM_1_FUNCS
        !            77: static __inline__ uae_u32 longget_1 (uae_cptr addr)
        !            78: {
        !            79:     uae_u32 result;
        !            80: 
        !            81:     __asm__ ("andl $0x00FFFFFF,%1\n"
        !            82:             "\tcmpb $0,(%1,%3)\n"
        !            83:             "\tleal 1f,%%ecx\n"
        !            84:             "\tje longget_stub\n"
        !            85:             "\taddl address_space,%1\n"
        !            86:             "\tmovl (%1),%0\n"
        !            87:             "\tbswapl %0\n"
        !            88:             "\t1:"
        !            89:             : "=c" (result), "=d" (addr) : "1" (addr), "r" (good_address_map) : "cc");
        !            90:     return result;
        !            91: }
        !            92: static __inline__ uae_u32 wordget_1 (uae_cptr addr)
        !            93: {
        !            94:     uae_u32 result;
        !            95: 
        !            96:     __asm__ ("andl $0x00FFFFFF,%1\n"
        !            97:             "\tcmpb $0,(%1,%3)\n"
        !            98:             "\tleal 1f,%%ecx\n"
        !            99:             "\tje wordget_stub\n"
        !           100:             "\taddl address_space,%1\n"
        !           101:             "\tmovzwl (%1),%0\n"
        !           102:             "\trolw $8,%w0\n"
        !           103:             "\t1:"
        !           104:             : "=c" (result), "=d" (addr) : "1" (addr), "r" (good_address_map) : "cc");
        !           105:     return result;
        !           106: }
        !           107: static __inline__ uae_u32 byteget_1 (uae_cptr addr) 
        !           108: {
        !           109:     uae_u32 result;
        !           110: 
        !           111:     __asm__ ("andl $0x00FFFFFF,%1\n"
        !           112:             "\tcmpb $0,(%1,%3)\n"
        !           113:             "\tleal 1f,%%ecx\n"
        !           114:             "\tje byteget_stub\n"
        !           115:             "\taddl address_space,%1\n"
        !           116:             "\tmovzbl (%1),%0\n"
        !           117:             "\t1:"
        !           118:             : "=c" (result), "=d" (addr) : "1" (addr), "r" (good_address_map) : "cc");
        !           119:     return result;
        !           120: }
        !           121: static __inline__ void longput_1 (uae_cptr addr, uae_u32 l)
        !           122: {
        !           123:     __asm__ __volatile__("andl $0x00FFFFFF,%0\n"
        !           124:             "\tcmpb $0,(%0,%3)\n"
        !           125:             "\tleal 1f,%%ecx\n"
        !           126:             "\tje longput_stub\n"
        !           127:             "\taddl address_space,%0\n"
        !           128:             "\tbswapl %1\n"
        !           129:             "\tmovl %1,(%0)\n"
        !           130:             "\t1:"
        !           131:             : "=d" (addr), "=b" (l) : "0" (addr), "r" (good_address_map), "1" (l) : "cc", "memory", "ecx");
        !           132: }
        !           133: static __inline__ void wordput_1 (uae_cptr addr, uae_u32 w)
        !           134: {
        !           135:     __asm__ __volatile__("andl $0x00FFFFFF,%0\n"
        !           136:             "\tcmpb $0,(%0,%3)\n"
        !           137:             "\tleal 1f,%%ecx\n"
        !           138:             "\tje wordput_stub\n"
        !           139:             "\taddl address_space,%0\n"
        !           140:             "\trolw $8,%1\n"
        !           141:             "\tmovw %w1,(%0)\n"
        !           142:             "\t1:"
        !           143:             : "=d" (addr), "=b" (w) : "0" (addr), "r" (good_address_map), "1" (w) : "cc", "memory", "ecx");
        !           144: }
        !           145: static __inline__ void byteput_1 (uae_cptr addr, uae_u32 b)
        !           146: {
        !           147:     __asm__ __volatile__("andl $0x00FFFFFF,%0\n"
        !           148:             "\tcmpb $0,(%0,%3)\n"
        !           149:             "\tleal 1f,%%ecx\n"
        !           150:             "\tje byteput_stub\n"
        !           151:             "\taddl address_space,%0\n"
        !           152:             "\tmovb %b1,(%0)\n"
        !           153:             "\t1:"
        !           154:             : "=d" (addr), "=b" (b) : "0" (addr), "r" (good_address_map), "1" (b) : "cc", "memory", "ecx");
        !           155: }
        !           156: 
        !           157: #endif
        !           158: 
        !           159: #define ALIGN_POINTER_TO32(p) ((~(unsigned long)(p)) & 3)
        !           160: 
        !           161: /* Not the best place for this, but then there's no good place for a kludge
        !           162:  * like this... */
        !           163: #define HAVE_UAE_U24
        !           164: typedef struct {
        !           165:     unsigned char a, b, c;
        !           166: } __attribute__ ((packed)) uae_u24;
        !           167: 
        !           168: static __inline__ uae_u24 uae24_convert (uae_u32 v)
        !           169: {
        !           170:     return *(uae_u24 *)&v;
        !           171: }

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