1 /* Copyright JS Foundation and other contributors, http://js.foundation 2 * 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 .syntax unified 17 18 .macro func _name 19 .global \_name 20 .type \_name, %function 21 \_name: 22 .endm 23 .macro endfunc _name 24 .size \_name, .-\_name 25 .endm 26 27 /** 28 * setjmp (jmp_buf env) 29 * 30 * See also: 31 * longjmp 32 * 33 * @return 0 - if returns from direct call, 34 * nonzero - if returns after longjmp. 35 */ 36 func setjmp 37 stmia r0!, {r4 - r11, lr} 38 str sp, [r0], #4 39 vstm r0, {s16 - s31} 40 mov r0, #0 41 bx lr 42 endfunc setjmp 43 44 /** 45 * longjmp (jmp_buf env, int val) 46 * 47 * Note: 48 * if val is not 0, then it would be returned from setjmp, 49 * otherwise - 0 would be returned. 50 * 51 * See also: 52 * setjmp 53 */ 54 func longjmp 55 ldmia r0!, {r4 - r11, lr} 56 ldr sp, [r0] 57 add r0, r0, #4 58 vldm r0, {s16 - s31} 59 mov r0, r1 60 cmp r0, #0 61 bne 1f 62 mov r0, #1 63 1: 64 bx lr 65 endfunc longjmp 66