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sysdeps/m68k/stackinfo.h
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Paul Eggert
Update copyright dates with scripts/update-copyrights
02 янв 2026, 00:42
02 янв 2026, 00:42
66f3e92
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/* Copyright (C) 1999-2026 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. The GNU C Library 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 Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with the GNU C Library. If not, see <https://www.gnu.org/licenses/>. */ /* This file contains a bit of information about the stack allocation of the processor. */ #ifndef _STACKINFO_H #define _STACKINFO_H 1 #include <elf.h> /* On m68k the stack grows down. */ #define _STACK_GROWS_DOWN 1 /* Default to an executable stack. PROT_EXEC can be overridden if PT_GNU_STACK is present, but it is presumed absent. */ #define DEFAULT_STACK_PROT_PERMS (PROT_READ|PROT_WRITE|PROT_EXEC) /* Access to the stack pointer. */ #define stackinfo_get_sp() \ ({ void *p__; asm volatile ("move.l %%sp, %0" : "=r" (p__)); p__; }) #define stackinfo_sub_sp(ptr) \ ({ ptrdiff_t d__; \ asm volatile ("sub.l %%sp, %0" : "=r" (d__) : "0" (ptr)); \ d__; }) #endif /* stackinfo.h */