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/* |
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* sysdeps.h - System dependent definitions for Windows |
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* |
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* Basilisk II (C) 1997-2005 Christian Bauer |
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* Basilisk II (C) 1997-2008 Christian Bauer |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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#define uae_u64 uint64 |
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typedef uae_u32 uaecptr; |
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|
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/* Alignment restrictions */ |
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#if defined(__i386__) || defined(__powerpc__) || defined(__m68k__) || defined(__x86_64__) |
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# define CPU_CAN_ACCESS_UNALIGNED |
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#endif |
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/* Timing functions */ |
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extern void timer_init(void); |
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extern uint64 GetTicks_usec(void); |
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/* Spinlocks */ |
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#ifdef __GNUC__ |
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#if defined(__powerpc__) || defined(__ppc__) |
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#define HAVE_TEST_AND_SET 1 |
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static inline int testandset(volatile int *p) |
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{ |
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int ret; |
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__asm__ __volatile__("0: lwarx %0,0,%1\n" |
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" xor. %0,%3,%0\n" |
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" bne 1f\n" |
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" stwcx. %2,0,%1\n" |
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" bne- 0b\n" |
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"1: " |
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: "=&r" (ret) |
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: "r" (p), "r" (1), "r" (0) |
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: "cr0", "memory"); |
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return ret; |
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} |
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#endif |
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#if defined(__i386__) || defined(__x86_64__) |
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#define HAVE_TEST_AND_SET 1 |
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static inline int testandset(volatile int *p) |
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{ |
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: "memory"); |
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return ret; |
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} |
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#endif |
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#ifdef __alpha__ |
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#define HAVE_TEST_AND_SET 1 |
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static inline int testandset(volatile int *p) |
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{ |
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int ret; |
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unsigned long one; |
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__asm__ __volatile__("0: mov 1,%2\n" |
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" ldl_l %0,%1\n" |
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" stl_c %2,%1\n" |
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" beq %2,1f\n" |
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".subsection 2\n" |
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"1: br 0b\n" |
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".previous" |
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: "=r" (ret), "=m" (*p), "=r" (one) |
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: "m" (*p)); |
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return ret; |
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} |
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#endif |
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#endif /* __GNUC__ */ |
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typedef volatile int spinlock_t; |
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} |
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#endif |
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/* UAE CPU defines */ |
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#ifdef WORDS_BIGENDIAN |
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#ifdef CPU_CAN_ACCESS_UNALIGNED |
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/* Big-endian CPUs which can do unaligned accesses */ |
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static inline uae_u32 do_get_mem_long(uae_u32 *a) {return *a;} |
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static inline uae_u32 do_get_mem_word(uae_u16 *a) {return *a;} |
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static inline void do_put_mem_long(uae_u32 *a, uae_u32 v) {*a = v;} |
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static inline void do_put_mem_word(uae_u16 *a, uae_u32 v) {*a = v;} |
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#else /* CPU_CAN_ACCESS_UNALIGNED */ |
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/* Big-endian CPUs which can not do unaligned accesses (this is not the most efficient way to do this...) */ |
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static inline uae_u32 do_get_mem_long(uae_u32 *a) {uint8 *b = (uint8 *)a; return (b[0] << 24) | (b[1] << 16) | (b[2] << 8) | b[3];} |
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static inline uae_u32 do_get_mem_word(uae_u16 *a) {uint8 *b = (uint8 *)a; return (b[0] << 8) | b[1];} |
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static inline void do_put_mem_long(uae_u32 *a, uae_u32 v) {uint8 *b = (uint8 *)a; b[0] = v >> 24; b[1] = v >> 16; b[2] = v >> 8; b[3] = v;} |
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static inline void do_put_mem_word(uae_u16 *a, uae_u32 v) {uint8 *b = (uint8 *)a; b[0] = v >> 8; b[1] = v;} |
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#endif /* CPU_CAN_ACCESS_UNALIGNED */ |
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#else /* WORDS_BIGENDIAN */ |
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#if defined(__i386__) || defined(__x86_64__) |
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/* Intel x86 */ |
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#define X86_PPRO_OPT |
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static inline uae_u32 do_get_mem_long(uae_u32 *a) {uint32 retval; __asm__ ("bswap %0" : "=r" (retval) : "0" (*a) : "cc"); return retval;} |
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static inline uae_u32 do_byteswap_16_g(uae_u32 v) {__asm__ ("rolw $8,%0" : "=r" (v) : "0" (v) : "cc"); return v;} |
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#endif |
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#elif defined(CPU_CAN_ACCESS_UNALIGNED) |
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/* Other little-endian CPUs which can do unaligned accesses */ |
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static inline uae_u32 do_get_mem_long(uae_u32 *a) {uint32 x = *a; return (x >> 24) | (x >> 8) & 0xff00 | (x << 8) & 0xff0000 | (x << 24);} |
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static inline uae_u32 do_get_mem_word(uae_u16 *a) {uint16 x = *a; return (x >> 8) | (x << 8);} |
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static inline void do_put_mem_long(uae_u32 *a, uae_u32 v) {*a = (v >> 24) | (v >> 8) & 0xff00 | (v << 8) & 0xff0000 | (v << 24);} |
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static inline void do_put_mem_word(uae_u16 *a, uae_u32 v) {*a = (v >> 8) | (v << 8);} |
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#else /* CPU_CAN_ACCESS_UNALIGNED */ |
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/* Other little-endian CPUs which can not do unaligned accesses (this needs optimization) */ |
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static inline uae_u32 do_get_mem_long(uae_u32 *a) {uint8 *b = (uint8 *)a; return (b[0] << 24) | (b[1] << 16) | (b[2] << 8) | b[3];} |
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static inline uae_u32 do_get_mem_word(uae_u16 *a) {uint8 *b = (uint8 *)a; return (b[0] << 8) | b[1];} |
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static inline void do_put_mem_long(uae_u32 *a, uae_u32 v) {uint8 *b = (uint8 *)a; b[0] = v >> 24; b[1] = v >> 16; b[2] = v >> 8; b[3] = v;} |
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static inline void do_put_mem_word(uae_u16 *a, uae_u32 v) {uint8 *b = (uint8 *)a; b[0] = v >> 8; b[1] = v;} |
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#endif /* CPU_CAN_ACCESS_UNALIGNED */ |
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#endif /* WORDS_BIGENDIAN */ |
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#ifndef HAVE_OPTIMIZED_BYTESWAP_32 |
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static inline uae_u32 do_byteswap_32_g(uae_u32 v) |
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{ return (((v >> 24) & 0xff) | ((v >> 8) & 0xff00) | ((v & 0xff) << 24) | ((v & 0xff00) << 8)); } |
