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90 lines
3 KiB
C
90 lines
3 KiB
C
//
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// GCC Inline Assembler version (ARM)
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//
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#ifndef pragmas_arm_h_
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#define pragmas_arm_h_
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#define EDUKE32_SCALER_PRAGMA(a) \
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static inline int32_t mulscale##a(int32_t eax, int32_t edx) { return dw((qw(eax) * edx) >> by(a)); } \
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\
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static inline int32_t dmulscale##a(int32_t eax, int32_t edx, int32_t esi, int32_t edi) \
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{ \
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return dw(((qw(eax) * edx) + (qw(esi) * edi)) >> by(a)); \
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}
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EDUKE32_GENERATE_PRAGMAS EDUKE32_SCALER_PRAGMA(32)
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#undef EDUKE32_SCALER_PRAGMA
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static inline void swapchar(void *a, void *b)
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{
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char t = *((char *)b);
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*((char *)b) = *((char *)a);
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*((char *)a) = t;
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}
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static inline void swapchar2(void *a, void *b, int32_t s)
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{
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swapchar(a, b);
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swapchar((char *)a + 1, (char *)b + s);
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}
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static inline void swapshort(void *a, void *b)
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{
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int16_t t = *((int16_t *)b);
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*((int16_t *)b) = *((int16_t *)a);
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*((int16_t *)a) = t;
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}
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static inline void swaplong(void *a, void *b)
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{
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int32_t t = *((int32_t *)b);
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*((int32_t *)b) = *((int32_t *)a);
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*((int32_t *)a) = t;
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}
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static inline void swapfloat(void *a, void *b)
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{
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float t = *((float *)b);
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*((float *)b) = *((float *)a);
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*((float *)a) = t;
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}
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static inline void swap64bit(void *a, void *b)
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{
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int64_t t = *((int64_t *)b);
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*((int64_t *)b) = *((int64_t *)a);
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*((int64_t *)a) = t;
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}
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static inline char readpixel(void *s) { return (*((char *)(s))); }
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static inline void drawpixel(void *s, char a) { *((char *)(s)) = a; }
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static inline int32_t klabs(int32_t a)
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{
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const uint32_t m = a >> (sizeof(int32_t) * CHAR_BIT - 1);
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return (a ^ m) - m;
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}
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static inline int32_t ksgn(int32_t a) { return (a > 0) - (a < 0); }
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static inline int32_t mulscale(int32_t eax, int32_t edx, int32_t ecx) { return dw((qw(eax) * qw(edx)) >> by(ecx)); }
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static inline int32_t dmulscale(int32_t eax, int32_t edx, int32_t esi, int32_t edi, int32_t ecx)
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{
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return dw(((qw(eax) * qw(edx)) + (qw(esi) * qw(edi))) >> by(ecx));
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}
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void qinterpolatedown16(intptr_t bufptr, int32_t num, int32_t val, int32_t add);
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void qinterpolatedown16short(intptr_t bufptr, int32_t num, int32_t val, int32_t add);
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void clearbuf(void *d, int32_t c, int32_t a);
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void copybuf(const void *s, void *d, int32_t c);
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void swapbuf4(void *a, void *b, int32_t c);
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void clearbufbyte(void *D, int32_t c, int32_t a);
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void copybufbyte(const void *S, void *D, int32_t c);
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void copybufreverse(const void *S, void *D, int32_t c);
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static inline int32_t krecipasm(int32_t i)
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{
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// Ken did this
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float const f = (float const)i;
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i = *(int32_t const *)&f;
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return ((reciptable[(i >> 12) & 2047] >> (((i - 0x3f800000) >> 23) & 31)) ^ (i >> 31));
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}
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#endif
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