1 /* Definitions for PA_RISC with ELF format on 64-bit Linux 2 Copyright (C) 1999-2022 Free Software Foundation, Inc. 3 4 This file is part of GCC. 5 6 GCC is free software; you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as published by 8 the Free Software Foundation; either version 3, or (at your option) 9 any later version. 10 11 GCC is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 GNU General Public License for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with GCC; see the file COPYING3. If not see 18 <http://www.gnu.org/licenses/>. */ 19 20 #if 0 /* needs some work :-( */ 21 /* If defined, this macro specifies a table of register pairs used to 22 eliminate unneeded registers that point into the stack frame. */ 23 24 #define ELIMINABLE_REGS \ 25 { \ 26 {FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}, \ 27 {ARG_POINTER_REGNUM, STACK_POINTER_REGNUM}, \ 28 {ARG_POINTER_REGNUM, FRAME_POINTER_REGNUM}, \ 29 } 30 31 /* This macro returns the initial difference between the specified pair 32 of registers. */ 33 #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \ 34 do \ 35 { \ 36 int fsize; \ 37 \ 38 fsize = pa_compute_frame_size (get_frame_size (), 0); \ 39 if ((TO) == FRAME_POINTER_REGNUM \ 40 && (FROM) == ARG_POINTER_REGNUM) \ 41 { \ 42 (OFFSET) = -16; \ 43 break; \ 44 } \ 45 \ 46 gcc_assert ((TO) == STACK_POINTER_REGNUM); \ 47 \ 48 switch (FROM) \ 49 { \ 50 case FRAME_POINTER_REGNUM: \ 51 (OFFSET) = - fsize; \ 52 break; \ 53 \ 54 case ARG_POINTER_REGNUM: \ 55 (OFFSET) = - fsize - 16; \ 56 break; \ 57 \ 58 default: \ 59 gcc_unreachable (); \ 60 } \ 61 } while (0) 62 #endif 63
Indexes created Thu Apr 30 00:23:01 UTC 2026