| 1e57a462 |
1 | #------------------------------------------------------------------------------ \r |
| 2 | #\r |
| 3 | # Copyright (c) 2008 - 2010, Apple Inc. All rights reserved.<BR>\r |
| 4 | #\r |
| 5 | # This program and the accompanying materials\r |
| 6 | # are licensed and made available under the terms and conditions of the BSD License\r |
| 7 | # which accompanies this distribution. The full text of the license may be found at\r |
| 8 | # http://opensource.org/licenses/bsd-license.php\r |
| 9 | #\r |
| 10 | # THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r |
| 11 | # WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r |
| 12 | #\r |
| 13 | #------------------------------------------------------------------------------\r |
| 14 | \r |
| 15 | .text\r |
| 16 | .align 2\r |
| 17 | GCC_ASM_EXPORT(__clzsi2)\r |
| 18 | \r |
| 19 | ASM_PFX(__clzsi2):\r |
| 20 | @ frame_needed = 1, uses_anonymous_args = 0\r |
| 21 | stmfd sp!, {r7, lr}\r |
| 22 | add r7, sp, #0\r |
| 23 | movs r3, r0, lsr #16\r |
| 24 | movne r3, #16\r |
| 25 | moveq r3, #0\r |
| 26 | movne r9, #0\r |
| 27 | moveq r9, #16\r |
| 28 | mov r3, r0, lsr r3\r |
| 29 | tst r3, #65280\r |
| 30 | movne r0, #8\r |
| 31 | moveq r0, #0\r |
| 32 | movne lr, #0\r |
| 33 | moveq lr, #8\r |
| 34 | mov r3, r3, lsr r0\r |
| 35 | tst r3, #240\r |
| 36 | movne r0, #4\r |
| 37 | moveq r0, #0\r |
| 38 | movne ip, #0\r |
| 39 | moveq ip, #4\r |
| 40 | mov r3, r3, lsr r0\r |
| 41 | tst r3, #12\r |
| 42 | movne r0, #2\r |
| 43 | moveq r0, #0\r |
| 44 | movne r1, #0\r |
| 45 | moveq r1, #2\r |
| 46 | mov r2, r3, lsr r0\r |
| 47 | add r3, lr, r9\r |
| 48 | add r0, r3, ip\r |
| 49 | add r1, r0, r1\r |
| 50 | mov r0, r2, lsr #1\r |
| 51 | eor r0, r0, #1\r |
| 52 | ands r0, r0, #1\r |
| 53 | mvnne r0, #0\r |
| 54 | rsb r3, r2, #2\r |
| 55 | and r0, r0, r3\r |
| 56 | add r0, r1, r0\r |
| 57 | ldmfd sp!, {r7, pc}\r |
projects / mirror_edk2.git / blame