projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| d4697bc9 | 1 | /* Copyright (C) 2004-2014 Free Software Foundation, Inc. |
| 08e3c578 | 2 | This file is part of the GNU C Library. |
| a424e418 | 3 | |
| 08e3c578 RH |
4 | The GNU C Library is free software; you can redistribute it and/or |
| 5 | modify it under the terms of the GNU Lesser General Public | |
| 6 | License as published by the Free Software Foundation; either | |
| 7 | version 2.1 of the License, or (at your option) any later version. | |
| 8 | ||
| 9 | The GNU C Library is distributed in the hope that it will be useful, | |
| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 12 | Lesser General Public License for more details. | |
| 13 | ||
| 14 | You should have received a copy of the GNU Lesser General Public | |
| ab84e3ff PE |
15 | License along with the GNU C Library. If not, see |
| 16 | <http://www.gnu.org/licenses/>. */ | |
| 08e3c578 RH |
17 | |
| 18 | #include "div_libc.h" | |
| 19 | ||
| 20 | /* 32-bit signed int divide. This is not a normal C function. Argument | |
| 21 | registers are t10 and t11, the result goes in t12. Only t12 and AT may | |
| 22 | be clobbered. | |
| 23 | ||
| a61c91b0 RH |
24 | The FPU can handle all input values except zero. Whee! |
| 25 | ||
| 26 | The FPCR save/restore is due to the fact that the EV6 _will_ set FPCR_INE | |
| 27 | for cvttq/c even without /sui being set. It will not, however, properly | |
| 28 | raise the exception, so we don't have to worry about FPCR_INED being clear | |
| 29 | and so dying by SIGFPE. */ | |
| 08e3c578 RH |
30 | |
| 31 | #ifndef EXTEND | |
| 32 | #define EXTEND(S,D) sextl S, D | |
| 33 | #endif | |
| 34 | ||
| 35 | .text | |
| 36 | .align 4 | |
| 37 | .globl __divl | |
| 685896ef | 38 | .type __divl, @funcnoplt |
| 08e3c578 RH |
39 | .usepv __divl, no |
| 40 | ||
| 41 | cfi_startproc | |
| 42 | cfi_return_column (RA) | |
| 43 | __divl: | |
| 44 | lda sp, -FRAME(sp) | |
| 45 | cfi_def_cfa_offset (FRAME) | |
| 46 | CALL_MCOUNT | |
| 47 | stt $f0, 0(sp) | |
| a61c91b0 | 48 | excb |
| 08e3c578 | 49 | beq Y, DIVBYZERO |
| a61c91b0 RH |
50 | |
| 51 | stt $f1, 8(sp) | |
| 52 | stt $f2, 16(sp) | |
| 08e3c578 RH |
53 | cfi_rel_offset ($f0, 0) |
| 54 | cfi_rel_offset ($f1, 8) | |
| a61c91b0 RH |
55 | cfi_rel_offset ($f2, 16) |
| 56 | mf_fpcr $f2 | |
| 08e3c578 RH |
57 | |
| 58 | EXTEND (X, RV) | |
| 59 | EXTEND (Y, AT) | |
| a61c91b0 | 60 | _ITOFT2 RV, $f0, 24, AT, $f1, 32 |
| 08e3c578 RH |
61 | cvtqt $f0, $f0 |
| 62 | cvtqt $f1, $f1 | |
| 08e3c578 RH |
63 | divt/c $f0, $f1, $f0 |
| 64 | cvttq/c $f0, $f0 | |
| a61c91b0 RH |
65 | excb |
| 66 | mt_fpcr $f2 | |
| 67 | _FTOIT $f0, RV, 24 | |
| 08e3c578 | 68 | |
| de47cb70 | 69 | ldt $f0, 0(sp) |
| 08e3c578 | 70 | ldt $f1, 8(sp) |
| a61c91b0 | 71 | ldt $f2, 16(sp) |
| 08e3c578 RH |
72 | lda sp, FRAME(sp) |
| 73 | cfi_restore ($f0) | |
| 74 | cfi_restore ($f1) | |
| a61c91b0 | 75 | cfi_restore ($f2) |
| 08e3c578 | 76 | cfi_def_cfa_offset (0) |
| de47cb70 | 77 | sextl RV, RV |
| 08e3c578 RH |
78 | ret $31, (RA), 1 |
| 79 | ||
| 80 | cfi_endproc | |
| 81 | .size __divl, .-__divl | |
| 82 | ||
| 83 | DO_DIVBYZERO |