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/*
* 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");
}
#else
// 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
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