| /* |
| * Copyright (C) 2016 The Android Open Source Project |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
| * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
| * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
| * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS |
| * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
| * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| */ |
| |
| #pragma once |
| |
| namespace unwindstack { |
| |
| #if defined(__arm__) |
| |
| inline __attribute__((__always_inline__)) void AsmGetRegs(void* reg_data) { |
| asm volatile( |
| #if defined(__thumb__) |
| ".align 2\n" |
| "bx pc\n" |
| "nop\n" |
| #endif |
| ".code 32\n" |
| "stmia %[base], {r0-r12}\n" |
| "add r2, %[base], #52\n" |
| "mov r3, r13\n" |
| "mov r4, r14\n" |
| "mov r5, r15\n" |
| "stmia r2, {r3-r5}\n" |
| #if defined(__thumb__) |
| "orr %[base], pc, #1\n" |
| "bx %[base]\n" |
| #endif |
| : [base] "+r"(reg_data) |
| : |
| : "r2", "r3", "r4", "r5", "memory"); |
| } |
| |
| #elif defined(__aarch64__) |
| |
| inline __attribute__((__always_inline__)) void AsmGetRegs(void* reg_data) { |
| asm volatile( |
| "1:\n" |
| "stp x0, x1, [%[base], #0]\n" |
| "stp x2, x3, [%[base], #16]\n" |
| "stp x4, x5, [%[base], #32]\n" |
| "stp x6, x7, [%[base], #48]\n" |
| "stp x8, x9, [%[base], #64]\n" |
| "stp x10, x11, [%[base], #80]\n" |
| "stp x12, x13, [%[base], #96]\n" |
| "stp x14, x15, [%[base], #112]\n" |
| "stp x16, x17, [%[base], #128]\n" |
| "stp x18, x19, [%[base], #144]\n" |
| "stp x20, x21, [%[base], #160]\n" |
| "stp x22, x23, [%[base], #176]\n" |
| "stp x24, x25, [%[base], #192]\n" |
| "stp x26, x27, [%[base], #208]\n" |
| "stp x28, x29, [%[base], #224]\n" |
| "str x30, [%[base], #240]\n" |
| "mov x12, sp\n" |
| "adr x13, 1b\n" |
| "stp x12, x13, [%[base], #248]\n" |
| : [base] "+r"(reg_data) |
| : |
| : "x12", "x13", "memory"); |
| } |
| |
| #elif defined(__riscv) |
| |
| inline __attribute__((__always_inline__)) void AsmGetRegs(void* reg_data) { |
| asm volatile( |
| "1:\n" |
| "sd ra, 8(%[base])\n" |
| "sd sp, 16(%[base])\n" |
| "sd gp, 24(%[base])\n" |
| "sd tp, 32(%[base])\n" |
| "sd t0, 40(%[base])\n" |
| "sd t1, 48(%[base])\n" |
| "sd t2, 56(%[base])\n" |
| "sd s0, 64(%[base])\n" |
| "sd s1, 72(%[base])\n" |
| "sd a0, 80(%[base])\n" |
| "sd a1, 88(%[base])\n" |
| "sd a2, 96(%[base])\n" |
| "sd a3, 104(%[base])\n" |
| "sd a4, 112(%[base])\n" |
| "sd a5, 120(%[base])\n" |
| "sd a6, 128(%[base])\n" |
| "sd a7, 136(%[base])\n" |
| "sd s2, 144(%[base])\n" |
| "sd s3, 152(%[base])\n" |
| "sd s4, 160(%[base])\n" |
| "sd s5, 168(%[base])\n" |
| "sd s6, 176(%[base])\n" |
| "sd s7, 184(%[base])\n" |
| "sd s8, 192(%[base])\n" |
| "sd s9, 200(%[base])\n" |
| "sd s10, 208(%[base])\n" |
| "sd s11, 216(%[base])\n" |
| "sd t3, 224(%[base])\n" |
| "sd t4, 232(%[base])\n" |
| "sd t5, 240(%[base])\n" |
| "sd t6, 248(%[base])\n" |
| "csrr t1, 0xc22\n" |
| "sd t1, 256(%[base])\n" |
| "la t1, 1b\n" |
| "sd t1, 0(%[base])\n" |
| : [base] "+r"(reg_data) |
| : |
| : "t1", "memory"); |
| } |
| |
| #elif defined(__i386__) || defined(__x86_64__) |
| |
| // Do not change this, some libraries depend on this function existing on |
| // these architectures. |
| extern "C" void AsmGetRegs(void* regs); |
| |
| #endif |
| |
| inline __attribute__((__always_inline__)) void RegsGetLocal(Regs* regs) { |
| AsmGetRegs(regs->RawData()); |
| } |
| |
| } // namespace unwindstack |