fpc/rtl/loongarch64/setjump.inc

{

    This file is part of the Free Pascal run time library.
    Copyright (c) 2008 by the Free Pascal development team.

    SetJmp and LongJmp implementation for exception handling

    See the file COPYING.FPC, included in this distribution,
    for details about the copyright.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

 **********************************************************************}

function fpc_setjmp(var S : jmp_buf) : longint;[Public, alias : 'FPC_SETJMP'];compilerproc;assembler;nostackframe;
  asm
    st.d $ra, $a0, 0
    st.d $sp, $a0, 8
    st.d $r21, $a0, 16
    st.d $fp, $a0, 24
    st.d $s0, $a0, 32
    st.d $s1, $a0, 40
    st.d $s2, $a0, 48
    st.d $s3, $a0, 56
    st.d $s4, $a0, 64
    st.d $s5, $a0, 72
    st.d $s6, $a0, 80
    st.d $s7, $a0, 88
    st.d $s8, $a0, 96

    fst.d $fs0, $a0, 104
    fst.d $fs1, $a0, 112
    fst.d $fs2, $a0, 120
    fst.d $fs3, $a0, 128
    fst.d $fs4, $a0, 136
    fst.d $fs5, $a0, 144
    fst.d $fs6, $a0, 152
    fst.d $fs7, $a0, 160

    ori $a0, $zero, 0
  end;


procedure fpc_longjmp(var S : jmp_buf;value : longint);[Public, alias : 'FPC_LONGJMP'];compilerproc;assembler;nostackframe;
  asm
    ld.d $ra, $a0, 0
    ld.d $sp, $a0, 8
    ld.d $r21, $a0, 16
    ld.d $fp, $a0, 24
    ld.d $s0, $a0, 32
    ld.d $s1, $a0, 40
    ld.d $s2, $a0, 48
    ld.d $s3, $a0, 56
    ld.d $s4, $a0, 64
    ld.d $s5, $a0, 72
    ld.d $s6, $a0, 80
    ld.d $s7, $a0, 88
    ld.d $s8, $a0, 96

    fld.d $fs0, $a0, 104
    fld.d $fs1, $a0, 112
    fld.d $fs2, $a0, 120
    fld.d $fs3, $a0, 128
    fld.d $fs4, $a0, 136
    fld.d $fs5, $a0, 144
    fld.d $fs6, $a0, 152
    fld.d $fs7, $a0, 160

    sltui $a0, $a1, 1
    add.d $a0, $a0, $a1
    jr $ra
  end;