libphobos/libdruntime/gcc/unwind/c6x.d

// Exception handling and frame unwind runtime interface routines.
// Copyright (C) 2011-2023 Free Software Foundation, Inc.

// GCC is free software; you can redistribute it and/or modify it under
// the terms of the GNU General Public License as published by the Free
// Software Foundation; either version 3, or (at your option) any later
// version.

// GCC 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.  See the GNU General Public License
// for more details.

// You should have received a copy of the GNU General Public License
// along with GCC; see the file COPYING3.  If not see
// <http://www.gnu.org/licenses/>.

// extern(C) interface for the C6X EABI unwinder library.
// This corresponds to unwind-c6x.h

module gcc.unwind.c6x;

import gcc.config;

version (TIC6X):
static if (GNU_ARM_EABI_Unwinder):

// Not really the ARM EABI, but pretty close.
public import gcc.unwind.arm_common;

extern (C):
@nogc:

enum int UNWIND_STACK_REG = 31;
// Use A0 as a scratch register within the personality routine.
enum int UNWIND_POINTER_REG = 0;

_Unwind_Word _Unwind_GetIP(_Unwind_Context* context)
{
    return _Unwind_GetGR(context, 33);
}

void _Unwind_SetIP(_Unwind_Context* context, _Unwind_Word val)
{
    return _Unwind_SetGR(context, 33, val);
}

_Unwind_Word _Unwind_GetIPInfo(_Unwind_Context* context, int* ip_before_insn)
{
    *ip_before_insn = 0;
    return _Unwind_GetIP(context);
}