diff options
Diffstat (limited to 'arch/sparc/math-emu/sfp-util.h')
| -rw-r--r-- | arch/sparc/math-emu/sfp-util.h | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/arch/sparc/math-emu/sfp-util.h b/arch/sparc/math-emu/sfp-util.h new file mode 100644 index 00000000000..d1b2aff3c25 --- /dev/null +++ b/arch/sparc/math-emu/sfp-util.h @@ -0,0 +1,115 @@ +#include <linux/kernel.h> +#include <linux/sched.h> +#include <linux/types.h> +#include <asm/byteorder.h> + +#define add_ssaaaa(sh, sl, ah, al, bh, bl) \ + __asm__ ("addcc %r4,%5,%1\n\t" \ + "addx %r2,%3,%0\n" \ + : "=r" ((USItype)(sh)), \ + "=&r" ((USItype)(sl)) \ + : "%rJ" ((USItype)(ah)), \ + "rI" ((USItype)(bh)), \ + "%rJ" ((USItype)(al)), \ + "rI" ((USItype)(bl)) \ + : "cc") +#define sub_ddmmss(sh, sl, ah, al, bh, bl) \ + __asm__ ("subcc %r4,%5,%1\n\t" \ + "subx %r2,%3,%0\n" \ + : "=r" ((USItype)(sh)), \ + "=&r" ((USItype)(sl)) \ + : "rJ" ((USItype)(ah)), \ + "rI" ((USItype)(bh)), \ + "rJ" ((USItype)(al)), \ + "rI" ((USItype)(bl)) \ + : "cc") + +#define umul_ppmm(w1, w0, u, v) \ + __asm__ ("! Inlined umul_ppmm\n\t" \ + "wr %%g0,%2,%%y ! SPARC has 0-3 delay insn after a wr\n\t" \ + "sra %3,31,%%g2 ! Don't move this insn\n\t" \ + "and %2,%%g2,%%g2 ! Don't move this insn\n\t" \ + "andcc %%g0,0,%%g1 ! Don't move this insn\n\t" \ + "mulscc %%g1,%3,%%g1\n\t" \ + "mulscc %%g1,%3,%%g1\n\t" \ + "mulscc %%g1,%3,%%g1\n\t" \ + "mulscc %%g1,%3,%%g1\n\t" \ + "mulscc %%g1,%3,%%g1\n\t" \ + "mulscc %%g1,%3,%%g1\n\t" \ + "mulscc %%g1,%3,%%g1\n\t" \ + "mulscc %%g1,%3,%%g1\n\t" \ + "mulscc %%g1,%3,%%g1\n\t" \ + "mulscc %%g1,%3,%%g1\n\t" \ + "mulscc %%g1,%3,%%g1\n\t" \ + "mulscc %%g1,%3,%%g1\n\t" \ + "mulscc %%g1,%3,%%g1\n\t" \ + "mulscc %%g1,%3,%%g1\n\t" \ + "mulscc %%g1,%3,%%g1\n\t" \ + "mulscc %%g1,%3,%%g1\n\t" \ + "mulscc %%g1,%3,%%g1\n\t" \ + "mulscc %%g1,%3,%%g1\n\t" \ + "mulscc %%g1,%3,%%g1\n\t" \ + "mulscc %%g1,%3,%%g1\n\t" \ + "mulscc %%g1,%3,%%g1\n\t" \ + "mulscc %%g1,%3,%%g1\n\t" \ + "mulscc %%g1,%3,%%g1\n\t" \ + "mulscc %%g1,%3,%%g1\n\t" \ + "mulscc %%g1,%3,%%g1\n\t" \ + "mulscc %%g1,%3,%%g1\n\t" \ + "mulscc %%g1,%3,%%g1\n\t" \ + "mulscc %%g1,%3,%%g1\n\t" \ + "mulscc %%g1,%3,%%g1\n\t" \ + "mulscc %%g1,%3,%%g1\n\t" \ + "mulscc %%g1,%3,%%g1\n\t" \ + "mulscc %%g1,%3,%%g1\n\t" \ + "mulscc %%g1,0,%%g1\n\t" \ + "add %%g1,%%g2,%0\n\t" \ + "rd %%y,%1\n" \ + : "=r" ((USItype)(w1)), \ + "=r" ((USItype)(w0)) \ + : "%rI" ((USItype)(u)), \ + "r" ((USItype)(v)) \ + : "%g1", "%g2", "cc") + +/* It's quite necessary to add this much assembler for the sparc. + The default udiv_qrnnd (in C) is more than 10 times slower! */ +#define udiv_qrnnd(q, r, n1, n0, d) \ + __asm__ ("! Inlined udiv_qrnnd\n\t" \ + "mov 32,%%g1\n\t" \ + "subcc %1,%2,%%g0\n\t" \ + "1: bcs 5f\n\t" \ + "addxcc %0,%0,%0 ! shift n1n0 and a q-bit in lsb\n\t" \ + "sub %1,%2,%1 ! this kills msb of n\n\t" \ + "addx %1,%1,%1 ! so this can't give carry\n\t" \ + "subcc %%g1,1,%%g1\n\t" \ + "2: bne 1b\n\t" \ + "subcc %1,%2,%%g0\n\t" \ + "bcs 3f\n\t" \ + "addxcc %0,%0,%0 ! shift n1n0 and a q-bit in lsb\n\t" \ + "b 3f\n\t" \ + "sub %1,%2,%1 ! this kills msb of n\n\t" \ + "4: sub %1,%2,%1\n\t" \ + "5: addxcc %1,%1,%1\n\t" \ + "bcc 2b\n\t" \ + "subcc %%g1,1,%%g1\n\t" \ + "! Got carry from n. Subtract next step to cancel this carry.\n\t" \ + "bne 4b\n\t" \ + "addcc %0,%0,%0 ! shift n1n0 and a 0-bit in lsb\n\t" \ + "sub %1,%2,%1\n\t" \ + "3: xnor %0,0,%0\n\t" \ + "! End of inline udiv_qrnnd\n" \ + : "=&r" ((USItype)(q)), \ + "=&r" ((USItype)(r)) \ + : "r" ((USItype)(d)), \ + "1" ((USItype)(n1)), \ + "0" ((USItype)(n0)) : "%g1", "cc") +#define UDIV_NEEDS_NORMALIZATION 0 + +#define abort() \ + return 0 + +#ifdef __BIG_ENDIAN +#define __BYTE_ORDER __BIG_ENDIAN +#else +#define __BYTE_ORDER __LITTLE_ENDIAN +#endif |