diff options
| author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
| commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
| tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/sparc/math-emu/sfp-util.h | |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
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 000000000000..d1b2aff3c259 --- /dev/null +++ b/arch/sparc/math-emu/sfp-util.h | |||
| @@ -0,0 +1,115 @@ | |||
| 1 | #include <linux/kernel.h> | ||
| 2 | #include <linux/sched.h> | ||
| 3 | #include <linux/types.h> | ||
| 4 | #include <asm/byteorder.h> | ||
| 5 | |||
| 6 | #define add_ssaaaa(sh, sl, ah, al, bh, bl) \ | ||
| 7 | __asm__ ("addcc %r4,%5,%1\n\t" \ | ||
| 8 | "addx %r2,%3,%0\n" \ | ||
| 9 | : "=r" ((USItype)(sh)), \ | ||
| 10 | "=&r" ((USItype)(sl)) \ | ||
| 11 | : "%rJ" ((USItype)(ah)), \ | ||
| 12 | "rI" ((USItype)(bh)), \ | ||
| 13 | "%rJ" ((USItype)(al)), \ | ||
| 14 | "rI" ((USItype)(bl)) \ | ||
| 15 | : "cc") | ||
| 16 | #define sub_ddmmss(sh, sl, ah, al, bh, bl) \ | ||
| 17 | __asm__ ("subcc %r4,%5,%1\n\t" \ | ||
| 18 | "subx %r2,%3,%0\n" \ | ||
| 19 | : "=r" ((USItype)(sh)), \ | ||
| 20 | "=&r" ((USItype)(sl)) \ | ||
| 21 | : "rJ" ((USItype)(ah)), \ | ||
| 22 | "rI" ((USItype)(bh)), \ | ||
| 23 | "rJ" ((USItype)(al)), \ | ||
| 24 | "rI" ((USItype)(bl)) \ | ||
| 25 | : "cc") | ||
| 26 | |||
| 27 | #define umul_ppmm(w1, w0, u, v) \ | ||
| 28 | __asm__ ("! Inlined umul_ppmm\n\t" \ | ||
| 29 | "wr %%g0,%2,%%y ! SPARC has 0-3 delay insn after a wr\n\t" \ | ||
| 30 | "sra %3,31,%%g2 ! Don't move this insn\n\t" \ | ||
| 31 | "and %2,%%g2,%%g2 ! Don't move this insn\n\t" \ | ||
| 32 | "andcc %%g0,0,%%g1 ! Don't move this insn\n\t" \ | ||
| 33 | "mulscc %%g1,%3,%%g1\n\t" \ | ||
| 34 | "mulscc %%g1,%3,%%g1\n\t" \ | ||
| 35 | "mulscc %%g1,%3,%%g1\n\t" \ | ||
| 36 | "mulscc %%g1,%3,%%g1\n\t" \ | ||
| 37 | "mulscc %%g1,%3,%%g1\n\t" \ | ||
| 38 | "mulscc %%g1,%3,%%g1\n\t" \ | ||
| 39 | "mulscc %%g1,%3,%%g1\n\t" \ | ||
| 40 | "mulscc %%g1,%3,%%g1\n\t" \ | ||
| 41 | "mulscc %%g1,%3,%%g1\n\t" \ | ||
| 42 | "mulscc %%g1,%3,%%g1\n\t" \ | ||
| 43 | "mulscc %%g1,%3,%%g1\n\t" \ | ||
| 44 | "mulscc %%g1,%3,%%g1\n\t" \ | ||
| 45 | "mulscc %%g1,%3,%%g1\n\t" \ | ||
| 46 | "mulscc %%g1,%3,%%g1\n\t" \ | ||
| 47 | "mulscc %%g1,%3,%%g1\n\t" \ | ||
| 48 | "mulscc %%g1,%3,%%g1\n\t" \ | ||
| 49 | "mulscc %%g1,%3,%%g1\n\t" \ | ||
| 50 | "mulscc %%g1,%3,%%g1\n\t" \ | ||
| 51 | "mulscc %%g1,%3,%%g1\n\t" \ | ||
| 52 | "mulscc %%g1,%3,%%g1\n\t" \ | ||
| 53 | "mulscc %%g1,%3,%%g1\n\t" \ | ||
| 54 | "mulscc %%g1,%3,%%g1\n\t" \ | ||
| 55 | "mulscc %%g1,%3,%%g1\n\t" \ | ||
| 56 | "mulscc %%g1,%3,%%g1\n\t" \ | ||
| 57 | "mulscc %%g1,%3,%%g1\n\t" \ | ||
| 58 | "mulscc %%g1,%3,%%g1\n\t" \ | ||
| 59 | "mulscc %%g1,%3,%%g1\n\t" \ | ||
| 60 | "mulscc %%g1,%3,%%g1\n\t" \ | ||
| 61 | "mulscc %%g1,%3,%%g1\n\t" \ | ||
| 62 | "mulscc %%g1,%3,%%g1\n\t" \ | ||
| 63 | "mulscc %%g1,%3,%%g1\n\t" \ | ||
| 64 | "mulscc %%g1,%3,%%g1\n\t" \ | ||
| 65 | "mulscc %%g1,0,%%g1\n\t" \ | ||
| 66 | "add %%g1,%%g2,%0\n\t" \ | ||
| 67 | "rd %%y,%1\n" \ | ||
| 68 | : "=r" ((USItype)(w1)), \ | ||
| 69 | "=r" ((USItype)(w0)) \ | ||
| 70 | : "%rI" ((USItype)(u)), \ | ||
| 71 | "r" ((USItype)(v)) \ | ||
| 72 | : "%g1", "%g2", "cc") | ||
| 73 | |||
| 74 | /* It's quite necessary to add this much assembler for the sparc. | ||
| 75 | The default udiv_qrnnd (in C) is more than 10 times slower! */ | ||
| 76 | #define udiv_qrnnd(q, r, n1, n0, d) \ | ||
| 77 | __asm__ ("! Inlined udiv_qrnnd\n\t" \ | ||
| 78 | "mov 32,%%g1\n\t" \ | ||
| 79 | "subcc %1,%2,%%g0\n\t" \ | ||
| 80 | "1: bcs 5f\n\t" \ | ||
| 81 | "addxcc %0,%0,%0 ! shift n1n0 and a q-bit in lsb\n\t" \ | ||
| 82 | "sub %1,%2,%1 ! this kills msb of n\n\t" \ | ||
| 83 | "addx %1,%1,%1 ! so this can't give carry\n\t" \ | ||
| 84 | "subcc %%g1,1,%%g1\n\t" \ | ||
| 85 | "2: bne 1b\n\t" \ | ||
| 86 | "subcc %1,%2,%%g0\n\t" \ | ||
| 87 | "bcs 3f\n\t" \ | ||
| 88 | "addxcc %0,%0,%0 ! shift n1n0 and a q-bit in lsb\n\t" \ | ||
| 89 | "b 3f\n\t" \ | ||
| 90 | "sub %1,%2,%1 ! this kills msb of n\n\t" \ | ||
| 91 | "4: sub %1,%2,%1\n\t" \ | ||
| 92 | "5: addxcc %1,%1,%1\n\t" \ | ||
| 93 | "bcc 2b\n\t" \ | ||
| 94 | "subcc %%g1,1,%%g1\n\t" \ | ||
| 95 | "! Got carry from n. Subtract next step to cancel this carry.\n\t" \ | ||
| 96 | "bne 4b\n\t" \ | ||
| 97 | "addcc %0,%0,%0 ! shift n1n0 and a 0-bit in lsb\n\t" \ | ||
| 98 | "sub %1,%2,%1\n\t" \ | ||
| 99 | "3: xnor %0,0,%0\n\t" \ | ||
| 100 | "! End of inline udiv_qrnnd\n" \ | ||
| 101 | : "=&r" ((USItype)(q)), \ | ||
| 102 | "=&r" ((USItype)(r)) \ | ||
| 103 | : "r" ((USItype)(d)), \ | ||
| 104 | "1" ((USItype)(n1)), \ | ||
| 105 | "0" ((USItype)(n0)) : "%g1", "cc") | ||
| 106 | #define UDIV_NEEDS_NORMALIZATION 0 | ||
| 107 | |||
| 108 | #define abort() \ | ||
| 109 | return 0 | ||
| 110 | |||
| 111 | #ifdef __BIG_ENDIAN | ||
| 112 | #define __BYTE_ORDER __BIG_ENDIAN | ||
| 113 | #else | ||
| 114 | #define __BYTE_ORDER __LITTLE_ENDIAN | ||
| 115 | #endif | ||