1 /* Copyright (C) 1999, 2002 Free Software Foundation, Inc. 2 This file is part of the GNU C Library. 3 Contributed by Philip Blundell <philb@gnu.org>, 1999. 4 5 The GNU C Library is free software; you can redistribute it and/or 6 modify it under the terms of the GNU Lesser General Public 7 License as published by the Free Software Foundation; either 8 version 2.1 of the License, or (at your option) any later version. 9 10 The GNU C Library is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 Lesser General Public License for more details. 14 15 You should have received a copy of the GNU Lesser General Public 16 License along with the GNU C Library; if not, see 17 <http://www.gnu.org/licenses/>. */ 18 19 #include <bits/armsigctx.h> 20 #include <linux/version.h> 21 22 #define SIGCONTEXT int _a2, int _a3, int _a4, union k_sigcontext 23 #define SIGCONTEXT_EXTRA_ARGS _a2, _a3, _a4, 24 25 /* The sigcontext structure changed between 2.0 and 2.1 kernels. On any 26 modern system we should be able to assume that the "new" format will be 27 in use. */ 28 #if LINUX_VERSION_CODE > 131328 29 30 #define GET_PC(ctx) ((void *) ctx.v21.arm_pc) 31 #define GET_FRAME(ctx) ADVANCE_STACK_FRAME ((void *) ctx.v21.arm_fp) 32 #define GET_STACK(ctx) ((void *) ctx.v21.arm_sp) 33 34 #else 35 36 #define GET_PC(ctx) ((void *)((ctx.v20.magic == SIGCONTEXT_2_0_MAGIC) ? \ 37 ctx.v20.reg.ARM_pc : ctx.v21.arm_pc)) 38 #define GET_FRAME(ctx) \ 39 ADVANCE_STACK_FRAME((void *)((ctx.v20.magic == SIGCONTEXT_2_0_MAGIC) ? \ 40 ctx.v20.reg.ARM_fp : ctx.v21.arm_fp)) 41 #define GET_STACK(ctx) ((void *)((ctx.v20.magic == SIGCONTEXT_2_0_MAGIC) ? \ 42 ctx.v20.reg.ARM_sp : ctx.v21.arm_sp)) 43 44 #endif 45 46 #define ADVANCE_STACK_FRAME(frm) \ 47 ((struct layout *)frm - 1) 48 49 #define CALL_SIGHANDLER(handler, signo, ctx) \ 50 (handler)((signo), SIGCONTEXT_EXTRA_ARGS (ctx)) 51