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remove dependency on Zbt-supporting compilers

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Romain Dolbeau
2023-04-10 10:14:33 +02:00
parent 7d9ce79bfe
commit cf2d9b51d5
3 changed files with 32 additions and 7 deletions
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21
ldsdsupport.h
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@@ -121,3 +121,24 @@ static inline unsigned int ufma8vlv(const unsigned int a, const unsigned int b,
_ufma8vlv(r, a, b);
return r;
}
#ifdef COMPILER_SUPPORT_FSR
static inline unsigned int fsr(const unsigned int a, const unsigned int b, const unsigned int c) {
unsigned int r;
asm("fsr %0, %1, %2, %3\n" : "=r"(r) : "r"(a), "r"(b), "r"(c));
return r;
}
#else
#define opcode_zbt(opcode, func3, func2, rd, rs1, rs2, rs3) \
asm volatile(".word ((" #opcode ") | (regnum_%0 << 7) | (regnum_%1 << 15) | (regnum_%2 << 20) | ((" #func3 ") << 12) | ((" #func2 ") << 25) | (regnum_%3 << 27));" \
: "=r" (rd) \
: "r" (rs1), "r" (rs2), "r" (rs3) \
);
#define _fsr(rd, rs1, rs2, rs3) opcode_zbt(0x00000033, 0x05, 0x02, rd, rs1, rs2, rs3)
static inline unsigned int fsr(const unsigned int a, const unsigned int b, const unsigned int c) {
unsigned int r;
_fsr(r, a, c, b); // !!!!
return r;
}
#endif