1 ;; Constraint definitions for eBPF.
2 ;; Copyright (C) 2019-2023 Free Software Foundation, Inc.
4 ;; This file is part of GCC.
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)
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.
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/>.
20 (define_constraint "I"
21 "A 32-bit signed immediate."
22 (and (match_code "const_int")
23 (match_test "IN_RANGE (ival, -1 - 0x7fffffff, 0x7fffffff)")))
25 (define_constraint "B"
26 "A constant argument for LDDW."
27 (match_code "const,symbol_ref,label_ref,const_double,const_int"))
29 (define_constraint "S"
30 "A constant call address."
31 (match_code "const,symbol_ref,label_ref,const_int"))
34 ;; Memory constraints.
37 ; Just like 'm' but disallows const_int.
38 ; Used for ldx[b,h,w,dw] and stx[b,h,w,dw] instructions.
39 (define_memory_constraint "q"
40 "Memory reference which is not a constant integer."
41 (and (match_code "mem")
42 (match_test "GET_CODE(XEXP(op, 0)) != CONST_INT")))