projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| 3402aac7 | 1 | //------------------------------------------------------------------------------\r |
| 1e57a462 | 2 | //\r |
| 3 | // Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>\r | |
| e58427e3 | 4 | // Copyright (c) 2018, Pete Batard. All rights reserved.<BR>\r |
| 1e57a462 | 5 | //\r |
| 4059386c | 6 | // SPDX-License-Identifier: BSD-2-Clause-Patent\r |
| 1e57a462 | 7 | //\r |
| 8 | //------------------------------------------------------------------------------\r | |
| 9 | \r | |
| 10 | \r | |
| e58427e3 PB |
11 | IMPORT __aeabi_uldivmod\r |
| 12 | EXPORT __aeabi_ldivmod\r | |
| 13 | EXPORT __rt_sdiv64\r | |
| 3402aac7 | 14 | \r |
| e58427e3 PB |
15 | AREA s___aeabi_ldivmod, CODE, READONLY, ARM\r |
| 16 | \r | |
| 17 | ARM\r | |
| 1e57a462 | 18 | \r |
| 19 | ;\r | |
| e58427e3 | 20 | ;INT64\r |
| 1e57a462 | 21 | ;EFIAPI\r |
| e58427e3 PB |
22 | ;__rt_sdiv64 (\r |
| 23 | ; IN INT64 Divisor\r | |
| 24 | ; IN INT64 Dividend\r | |
| 1e57a462 | 25 | ; );\r |
| 26 | ;\r | |
| e58427e3 PB |
27 | __rt_sdiv64\r |
| 28 | ; Swap r0-r1 and r2-r3\r | |
| 29 | MOV r12, r0\r | |
| 30 | MOV r0, r2\r | |
| 31 | MOV r2, r12\r | |
| 32 | MOV r12, r1\r | |
| 33 | MOV r1, r3\r | |
| 34 | MOV r3, r12\r | |
| 35 | B __aeabi_ldivmod\r | |
| 1e57a462 | 36 | \r |
| e58427e3 PB |
37 | ;\r |
| 38 | ;INT64\r | |
| 39 | ;EFIAPI\r | |
| 40 | ;__aeabi_ldivmod (\r | |
| 41 | ; IN INT64 Dividend\r | |
| 42 | ; IN INT64 Divisor\r | |
| 43 | ; );\r | |
| 44 | ;\r | |
| 45 | __aeabi_ldivmod\r | |
| 1e57a462 | 46 | PUSH {r4,lr}\r |
| 47 | ASRS r4,r1,#1\r | |
| 48 | EOR r4,r4,r3,LSR #1\r | |
| 49 | BPL L_Test1\r | |
| 50 | RSBS r0,r0,#0\r | |
| 51 | RSC r1,r1,#0\r | |
| 52 | L_Test1\r | |
| 53 | TST r3,r3\r | |
| 54 | BPL L_Test2\r | |
| 55 | RSBS r2,r2,#0\r | |
| 56 | RSC r3,r3,#0\r | |
| 57 | L_Test2\r | |
| e58427e3 | 58 | BL __aeabi_uldivmod\r |
| 1e57a462 | 59 | TST r4,#0x40000000\r |
| 60 | BEQ L_Test3\r | |
| 61 | RSBS r0,r0,#0\r | |
| 62 | RSC r1,r1,#0\r | |
| 63 | L_Test3\r | |
| 64 | TST r4,#0x80000000\r | |
| 65 | BEQ L_Exit\r | |
| 66 | RSBS r2,r2,#0\r | |
| 67 | RSC r3,r3,#0\r | |
| 68 | L_Exit\r | |
| 69 | POP {r4,pc}\r | |
| 3402aac7 | 70 | \r |
| 1e57a462 | 71 | END\r |