| /* libs/opengles/iterators.S |
| ** |
| ** Copyright 2006, The Android Open Source Project |
| ** |
| ** Licensed under the Apache License, Version 2.0 (the "License"); |
| ** you may not use this file except in compliance with the License. |
| ** You may obtain a copy of the License at |
| ** |
| ** http://www.apache.org/licenses/LICENSE-2.0 |
| ** |
| ** Unless required by applicable law or agreed to in writing, software |
| ** distributed under the License is distributed on an "AS IS" BASIS, |
| ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| ** See the License for the specific language governing permissions and |
| ** limitations under the License. |
| */ |
| |
| |
| .text |
| .align 2 |
| .arm |
| |
| .global iterators0032 |
| .type iterators0032, %function |
| |
| /* |
| * iterators0032 |
| * |
| * MUST BE CALLED FROM ARM CODE |
| * |
| * r0: const compute_iterators_t* (this) |
| * r0 + 0: m_dx01 |
| * r0 + 4: m_dy10 |
| * r0 + 8: m_dx20 |
| * r0 +12: m_dy02 |
| * r0 +16: m_x0 |
| * r0 +20: m_y0 |
| * r0 +24: m_area |
| * r0 +28: m_scale |
| * r0 +29: m_area_scale; |
| * r1: int32_t* (out) |
| * r1 + 0: c |
| * r1 + 4: dcdx |
| * r1 + 8: dcdy |
| * r2: c0 |
| * r3: c1 |
| * [sp]: c2 |
| */ |
| |
| iterators0032: |
| stmfd sp!, {r4, r5, r6, r7, r8, lr} |
| ldr r4, [sp, #4*6] |
| |
| ldrb r12, [r0, #29] |
| sub r3, r3, r2 |
| sub r4, r4, r2 |
| sub r12, r12, #16 |
| mov r3, r3, asr r12 |
| mov r4, r4, asr r12 |
| |
| ldr r5, [r0, #0] |
| ldr r12, [r0, #4] |
| smull r8, lr, r4, r5 |
| ldr r5, [r0, #8] |
| smull r6, r7, r4, r12 |
| ldr r12, [r0, #12] |
| smlal r8, lr, r3, r5 |
| smlal r6, r7, r3, r12 |
| |
| ldr r3, [r0, #16] // m_x0 |
| ldr r4, [r0, #20] // m_x1 |
| |
| str r6, [r1, #4] |
| str r8, [r1, #8] |
| |
| umull r6, r5, r3, r6 |
| umull r8, r0, r4, r8 |
| mla r7, r3, r7, r5 |
| mla lr, r4, lr, r0 |
| adds r6, r6, r8 |
| adc r7, r7, lr |
| |
| movs r6, r6, lsr #4 |
| adc r6, r6, r7, lsl #28 |
| rsb r6, r6, r2, lsl #16 |
| str r6, [r1, #0] |
| |
| ldmfd sp!, {r4, r5, r6, r7, r8, pc} |
| |