| Christopher Ferris | 2a25c4a | 2017-07-07 16:35:48 -0700 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (C) 2016 The Android Open Source Project |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions |
| 7 | * are met: |
| 8 | * * Redistributions of source code must retain the above copyright |
| 9 | * notice, this list of conditions and the following disclaimer. |
| 10 | * * Redistributions in binary form must reproduce the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer in |
| 12 | * the documentation and/or other materials provided with the |
| 13 | * distribution. |
| 14 | * |
| 15 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 16 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 17 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
| 18 | * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
| 19 | * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 20 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
| 21 | * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS |
| 22 | * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
| 23 | * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| 24 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| 25 | * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 26 | * SUCH DAMAGE. |
| 27 | */ |
| 28 | |
| 29 | #ifndef _LIBUNWINDSTACK_REGS_GET_LOCAL_H |
| 30 | #define _LIBUNWINDSTACK_REGS_GET_LOCAL_H |
| 31 | |
| 32 | #if defined(__arm__) |
| 33 | |
| 34 | inline void RegsGetLocal(Regs* regs) { |
| 35 | void* reg_data = regs->RawData(); |
| 36 | asm volatile( |
| 37 | ".align 2\n" |
| 38 | "bx pc\n" |
| 39 | "nop\n" |
| 40 | ".code 32\n" |
| 41 | "stmia %[base], {r0-r12}\n" |
| 42 | "add %[base], #52\n" |
| 43 | "mov r1, r13\n" |
| 44 | "mov r2, r14\n" |
| 45 | "mov r3, r15\n" |
| 46 | "stmia %[base], {r1-r3}\n" |
| 47 | "orr %[base], pc, #1\n" |
| 48 | "bx %[base]\n" |
| 49 | : [base] "+r"(reg_data) |
| 50 | : |
| 51 | : "memory"); |
| 52 | |
| 53 | regs->SetFromRaw(); |
| 54 | } |
| 55 | |
| 56 | #elif defined(__aarch64__) |
| 57 | |
| 58 | inline void RegsGetLocal(Regs* regs) { |
| 59 | void* reg_data = regs->RawData(); |
| 60 | asm volatile( |
| 61 | "1:\n" |
| 62 | "stp x0, x1, [%[base], #0]\n" |
| 63 | "stp x2, x3, [%[base], #16]\n" |
| 64 | "stp x4, x5, [%[base], #32]\n" |
| 65 | "stp x6, x7, [%[base], #48]\n" |
| 66 | "stp x8, x9, [%[base], #64]\n" |
| 67 | "stp x10, x11, [%[base], #80]\n" |
| 68 | "stp x12, x13, [%[base], #96]\n" |
| 69 | "stp x14, x15, [%[base], #112]\n" |
| 70 | "stp x16, x17, [%[base], #128]\n" |
| 71 | "stp x18, x19, [%[base], #144]\n" |
| 72 | "stp x20, x21, [%[base], #160]\n" |
| 73 | "stp x22, x23, [%[base], #176]\n" |
| 74 | "stp x24, x25, [%[base], #192]\n" |
| 75 | "stp x26, x27, [%[base], #208]\n" |
| 76 | "stp x28, x29, [%[base], #224]\n" |
| 77 | "str x30, [%[base], #240]\n" |
| 78 | "mov x12, sp\n" |
| 79 | "adr x13, 1b\n" |
| 80 | "stp x12, x13, [%[base], #248]\n" |
| 81 | : [base] "+r"(reg_data) |
| 82 | : |
| 83 | : "x12", "x13", "memory"); |
| 84 | |
| 85 | regs->SetFromRaw(); |
| 86 | } |
| 87 | |
| 88 | #elif defined(__i386__) || defined(__x86_64__) |
| 89 | |
| 90 | extern "C" void AsmGetRegs(void* regs); |
| 91 | |
| 92 | inline void RegsGetLocal(Regs* regs) { |
| 93 | AsmGetRegs(regs->RawData()); |
| 94 | |
| 95 | regs->SetFromRaw(); |
| 96 | } |
| 97 | |
| 98 | #endif |
| 99 | |
| 100 | #endif // _LIBUNWINDSTACK_REGS_GET_LOCAL_H |