Greg Kroah-Hartman | b244131 | 2017-11-01 15:07:57 +0100 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2 | #include <linux/kernel.h> |
| 3 | #include <linux/sched.h> |
| 4 | #include <linux/types.h> |
| 5 | #include <asm/byteorder.h> |
| 6 | |
| 7 | #define add_ssaaaa(sh, sl, ah, al, bh, bl) \ |
Sam Ravnborg | 347b0cf | 2014-05-16 23:25:46 +0200 | [diff] [blame] | 8 | __asm__ ("addcc %r4,%5,%1\n\t" \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 9 | "addx %r2,%3,%0\n" \ |
Sam Ravnborg | 347b0cf | 2014-05-16 23:25:46 +0200 | [diff] [blame] | 10 | : "=r" (sh), \ |
| 11 | "=&r" (sl) \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 12 | : "%rJ" ((USItype)(ah)), \ |
| 13 | "rI" ((USItype)(bh)), \ |
| 14 | "%rJ" ((USItype)(al)), \ |
| 15 | "rI" ((USItype)(bl)) \ |
| 16 | : "cc") |
| 17 | #define sub_ddmmss(sh, sl, ah, al, bh, bl) \ |
Sam Ravnborg | 347b0cf | 2014-05-16 23:25:46 +0200 | [diff] [blame] | 18 | __asm__ ("subcc %r4,%5,%1\n\t" \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 19 | "subx %r2,%3,%0\n" \ |
Sam Ravnborg | 347b0cf | 2014-05-16 23:25:46 +0200 | [diff] [blame] | 20 | : "=r" (sh), \ |
| 21 | "=&r" (sl) \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 22 | : "rJ" ((USItype)(ah)), \ |
| 23 | "rI" ((USItype)(bh)), \ |
| 24 | "rJ" ((USItype)(al)), \ |
| 25 | "rI" ((USItype)(bl)) \ |
| 26 | : "cc") |
| 27 | |
| 28 | #define umul_ppmm(w1, w0, u, v) \ |
| 29 | __asm__ ("! Inlined umul_ppmm\n\t" \ |
| 30 | "wr %%g0,%2,%%y ! SPARC has 0-3 delay insn after a wr\n\t" \ |
| 31 | "sra %3,31,%%g2 ! Don't move this insn\n\t" \ |
| 32 | "and %2,%%g2,%%g2 ! Don't move this insn\n\t" \ |
| 33 | "andcc %%g0,0,%%g1 ! Don't move this insn\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,%3,%%g1\n\t" \ |
| 66 | "mulscc %%g1,0,%%g1\n\t" \ |
| 67 | "add %%g1,%%g2,%0\n\t" \ |
| 68 | "rd %%y,%1\n" \ |
Sam Ravnborg | 347b0cf | 2014-05-16 23:25:46 +0200 | [diff] [blame] | 69 | : "=r" (w1), \ |
| 70 | "=r" (w0) \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 71 | : "%rI" ((USItype)(u)), \ |
| 72 | "r" ((USItype)(v)) \ |
| 73 | : "%g1", "%g2", "cc") |
| 74 | |
| 75 | /* It's quite necessary to add this much assembler for the sparc. |
| 76 | The default udiv_qrnnd (in C) is more than 10 times slower! */ |
| 77 | #define udiv_qrnnd(q, r, n1, n0, d) \ |
| 78 | __asm__ ("! Inlined udiv_qrnnd\n\t" \ |
| 79 | "mov 32,%%g1\n\t" \ |
| 80 | "subcc %1,%2,%%g0\n\t" \ |
| 81 | "1: bcs 5f\n\t" \ |
| 82 | "addxcc %0,%0,%0 ! shift n1n0 and a q-bit in lsb\n\t" \ |
| 83 | "sub %1,%2,%1 ! this kills msb of n\n\t" \ |
| 84 | "addx %1,%1,%1 ! so this can't give carry\n\t" \ |
| 85 | "subcc %%g1,1,%%g1\n\t" \ |
| 86 | "2: bne 1b\n\t" \ |
| 87 | "subcc %1,%2,%%g0\n\t" \ |
| 88 | "bcs 3f\n\t" \ |
| 89 | "addxcc %0,%0,%0 ! shift n1n0 and a q-bit in lsb\n\t" \ |
| 90 | "b 3f\n\t" \ |
| 91 | "sub %1,%2,%1 ! this kills msb of n\n\t" \ |
| 92 | "4: sub %1,%2,%1\n\t" \ |
| 93 | "5: addxcc %1,%1,%1\n\t" \ |
| 94 | "bcc 2b\n\t" \ |
| 95 | "subcc %%g1,1,%%g1\n\t" \ |
| 96 | "! Got carry from n. Subtract next step to cancel this carry.\n\t" \ |
| 97 | "bne 4b\n\t" \ |
| 98 | "addcc %0,%0,%0 ! shift n1n0 and a 0-bit in lsb\n\t" \ |
| 99 | "sub %1,%2,%1\n\t" \ |
| 100 | "3: xnor %0,0,%0\n\t" \ |
| 101 | "! End of inline udiv_qrnnd\n" \ |
Sam Ravnborg | 347b0cf | 2014-05-16 23:25:46 +0200 | [diff] [blame] | 102 | : "=&r" (q), \ |
| 103 | "=&r" (r) \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 104 | : "r" ((USItype)(d)), \ |
| 105 | "1" ((USItype)(n1)), \ |
| 106 | "0" ((USItype)(n0)) : "%g1", "cc") |
| 107 | #define UDIV_NEEDS_NORMALIZATION 0 |
| 108 | |
| 109 | #define abort() \ |
| 110 | return 0 |
Linus Torvalds | 13da9e2 | 2010-05-26 08:30:15 -0700 | [diff] [blame] | 111 | |
| 112 | #ifdef __BIG_ENDIAN |
| 113 | #define __BYTE_ORDER __BIG_ENDIAN |
| 114 | #else |
| 115 | #define __BYTE_ORDER __LITTLE_ENDIAN |
| 116 | #endif |