diff options
Diffstat (limited to 'libunwindstack/AsmGetRegsX86.S')
-rw-r--r-- | libunwindstack/AsmGetRegsX86.S | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/libunwindstack/AsmGetRegsX86.S b/libunwindstack/AsmGetRegsX86.S new file mode 100644 index 000000000..021e6286c --- /dev/null +++ b/libunwindstack/AsmGetRegsX86.S @@ -0,0 +1,62 @@ +/* + * 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. + */ + + .text + .global AsmGetRegs + .balign 16 + .type AsmGetRegs, @function +AsmGetRegs: + .cfi_startproc + mov 4(%esp), %eax + movl $0, (%eax) + movl %ecx, 4(%eax) + movl %edx, 8(%eax) + movl %ebx, 12(%eax) + + /* ESP */ + leal 4(%esp), %ecx + movl %ecx, 16(%eax) + + movl %ebp, 20(%eax) + movl %esi, 24(%eax) + movl %edi, 28(%eax) + + /* EIP */ + movl (%esp), %ecx + movl %ecx, 32(%eax) + + mov %cs, 36(%eax) + mov %ss, 40(%eax) + mov %ds, 44(%eax) + mov %es, 48(%eax) + mov %fs, 52(%eax) + mov %gs, 56(%eax) + ret + + .cfi_endproc + .size AsmGetRegs, .-AsmGetRegs |