1 /* Copyright (C) 1994-2022 Free Software Foundation, Inc. 2 This file is part of the GNU C Library. 3 4 The GNU C Library is free software; you can redistribute it and/or 5 modify it under the terms of the GNU Lesser General Public 6 License as published by the Free Software Foundation; either 7 version 2.1 of the License, or (at your option) any later version. 8 9 The GNU C Library is distributed in the hope that it will be useful, 10 but WITHOUT ANY WARRANTY; without even the implied warranty of 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 Lesser General Public License for more details. 13 14 You should have received a copy of the GNU Lesser General Public 15 License along with the GNU C Library; if not, see 16 <https://www.gnu.org/licenses/>. */ 17 18 #ifdef __ASSEMBLER__ 19 20 /* Get the Mach definitions of ENTRY and kernel_trap. */ 21 #include <mach/machine/syscall_sw.h> 22 23 /* The Mach definitions assume underscores should be prepended to 24 symbol names. Redefine them to do so only when appropriate. */ 25 #undef EXT 26 #undef LEXT 27 #define EXT(x) C_SYMBOL_NAME(x) 28 #define LEXT(x) C_SYMBOL_NAME(x##:) 29 30 /* For ELF we need to add the `.type' directive to make shared libraries 31 work right. */ 32 #undef ENTRY 33 #define ENTRY(name) \ 34 .globl name; \ 35 .align ALIGN; \ 36 .type name,@function; \ 37 name: 38 39 #endif 40 41 /* This is invoked by things run when there is random lossage, before they 42 try to do anything else. Just to be safe, deallocate the reply port so 43 bogons arriving on it don't foul up future RPCs. */ 44 45 #ifndef __ASSEMBLER__ 46 #define FATAL_PREPARE_INCLUDE <mach/mig_support.h> 47 #define FATAL_PREPARE __mig_dealloc_reply_port (MACH_PORT_NULL) 48 #endif 49 50 /* sysdeps/mach/MACHINE/sysdep.h should define the following macros. */ 51 52 /* Produce a text assembler label for the C global symbol NAME. */ 53 #ifndef ENTRY 54 #define ENTRY(name) .error ENTRY not defined by sysdeps/mach/MACHINE/sysdep.h 55 /* This is not used on all machines. */ 56 #endif 57 58 /* Set variables ARGC, ARGV, and ENVP for the arguments 59 left on the stack by the microkernel. */ 60 #ifndef SNARF_ARGS 61 #define SNARF_ARGS(argc, argv, envp) 62 #error SNARF_ARGS not defined by sysdeps/mach/MACHINE/sysdep.h 63 #endif 64 65 /* LOSE can be defined as the `halt' instruction or something 66 similar which will cause the process to die in a characteristic 67 way suggesting a bug. */ 68 #ifndef LOSE 69 #define LOSE ({ volatile int zero = 0; zero / zero; }) 70 #endif 71 72 /* One of these should be defined to specify the stack direction. */ 73 #if !defined (STACK_GROWTH_UP) && !defined (STACK_GROWTH_DOWN) 74 #error stack direction unspecified 75 #endif 76 77 /* Used by some assembly code. */ 78 #define C_SYMBOL_NAME(name) name 79