libitm/config/s390/sjlj.S

   1 /* Copyright (C) 2013-2020 Free Software Foundation, Inc.
   2    Contributed by Andreas Krebbel <krebbel@linux.vnet.ibm.com>
   3
   4    This file is part of the GNU Transactional Memory Library (libitm).
   5
   6    Libitm is free software; you can redistribute it and/or modify it
   7    under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3 of the License, or
   9    (at your option) any later version.
  10
  11    Libitm is distributed in the hope that it will be useful, but WITHOUT ANY
  12    WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
  13    FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  14    more details.
  15
  16    Under Section 7 of GPL version 3, you are granted additional
  17    permissions described in the GCC Runtime Library Exception, version
  18    3.1, as published by the Free Software Foundation.
  19
  20    You should have received a copy of the GNU General Public License and
  21    a copy of the GCC Runtime Library Exception along with this program;
  22    see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  23    <http://www.gnu.org/licenses/>.  */
  24
  25
  26 #include "asmcfi.h"
  27
  28 .text
  29         .align 4
  30 .globl  _ITM_beginTransaction
  31         .type _ITM_beginTransaction, @function
  32
  33         /* _ITM_beginTransaction (int props); props -> r2 */
  34 _ITM_beginTransaction:
  35         cfi_startproc
  36 #ifdef __s390x__
  37         lgr     %r3,%r15        /* backup stack pointer */
  38         aghi    %r15,-304       /* jump buffer (144) + reg save area (160) */
  39         cfi_adjust_cfa_offset(304)
  40         stmg    %r6,%r14,160(%r15)
  41         stg     %r3,72+160(%r15) /* store the old stack pointer */
  42         std     %f8,80+160(%r15)
  43         std     %f9,88+160(%r15)
  44         std     %f10,96+160(%r15)
  45         std     %f11,104+160(%r15)
  46         std     %f12,112+160(%r15)
  47         std     %f13,120+160(%r15)
  48         std     %f14,128+160(%r15)
  49         std     %f15,136+160(%r15)
  50         la      %r3,160(%r15)   /* second argument to GTM_begin_transaction */
  51         brasl   %r14,GTM_begin_transaction
  52         lg      %r1,64+160(%r15)
  53         aghi    %r15,304
  54         cfi_adjust_cfa_offset(-304)
  55         br      %r1
  56 #else
  57         lr      %r3,%r15        /* backup stack pointer */
  58         ahi     %r15,-152       /* jump buffer (56) + reg save area (96) */
  59         cfi_adjust_cfa_offset(152)
  60         stm     %r6,%r14,96(%r15)
  61         st      %r3,36+96(%r15) /* store the old stack pointer */
  62         std     %f4,40+96(%r15)
  63         std     %f6,48+96(%r15)
  64         la      %r3,96(%r15)    /* second argument to GTM_begin_transaction */
  65         /* begin_transaction (uint32_t prop, const gtm_jmpbuf *jb) */
  66         brasl   %r14,GTM_begin_transaction /* requires mzarch */
  67         l       %r1,32+96(%r15)
  68         ahi     %r15,152
  69         cfi_adjust_cfa_offset(-152)
  70         br      %r1
  71 #endif
  72         cfi_endproc
  73
  74         .size _ITM_beginTransaction, .-_ITM_beginTransaction
  75
  76         .align 4
  77 .globl  GTM_longjmp
  78         .type GTM_longjmp, @function
  79         .hidden GTM_longjmp
  80
  81         /* uint32_t GTM_longjmp (uint32_t, const gtm_jmpbuf *, uint32_t) */
  82 GTM_longjmp:
  83         /* First parameter becomes the return value of
  84            _ITM_beginTransaction (r2).
  85            Third parameter is ignored for now.  */
  86         cfi_startproc
  87 #ifdef __s390x__
  88         ld      %f8,80(%r3)
  89         ld      %f9,88(%r3)
  90         ld      %f10,96(%r3)
  91         ld      %f11,104(%r3)
  92         ld      %f12,112(%r3)
  93         ld      %f13,120(%r3)
  94         ld      %f14,128(%r3)
  95         ld      %f15,136(%r3)
  96         lmg     %r6,%r15,0(%r3)
  97         br      %r14
  98 #else
  99         ld      %f4,40(%r3)
 100         ld      %f6,48(%r3)
 101         lm      %r6,%r15,0(%r3)
 102         br      %r14
 103 #endif
 104         cfi_endproc
 105
 106         .size GTM_longjmp, .-GTM_longjmp
 107
 108         .section .note.GNU-stack, "", @progbits