/* Assembler macros for m68k. Copyright (C) 1998 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 Library General Public License as published by the Free Software Foundation; either version 2 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 Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with the GNU C Library; see the file COPYING.LIB. If not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #include <sysdeps/generic/sysdep.h> #ifdef __ASSEMBLER__ /* Syntactic details of assembler. */ #ifdef HAVE_ELF /* ELF uses byte-counts for .align, most others use log2 of count of bytes. */ #define ALIGNARG(log2) 1<<log2 /* For ELF we need the `.type' directive to make shared libs work right. */ #define ASM_TYPE_DIRECTIVE(name,typearg) .type name,typearg #define ASM_SIZE_DIRECTIVE(name) .size name,.-name /* In ELF C symbols are asm symbols. */ #undef NO_UNDERSCORES #define NO_UNDERSCORES #else #define ALIGNARG(log2) log2 #define ASM_TYPE_DIRECTIVE(name,type) /* Nothing is specified. */ #define ASM_SIZE_DIRECTIVE(name) /* Nothing is specified. */ #endif /* Define an entry point visible from C. There is currently a bug in gdb which prevents us from specifying incomplete stabs information. Fake some entries here which specify the current source file. */ #define ENTRY(name) \ .globl C_SYMBOL_NAME(name); \ ASM_TYPE_DIRECTIVE (C_SYMBOL_NAME(name),@function); \ .align ALIGNARG(2); \ C_LABEL(name) \ CALL_MCOUNT #undef END #define END(name) ASM_SIZE_DIRECTIVE(name) /* If compiled for profiling, call `_mcount' at the start of each function. */ #ifdef PROF /* The mcount code relies on a normal frame pointer being on the stack to locate our caller, so push one just for its benefit. */ #define CALL_MCOUNT \ move.l %fp, -(%sp); move.l %sp, %fp; \ jbsr JUMPTARGET (mcount); \ move.l (%sp)+, %fp; #else #define CALL_MCOUNT /* Do nothing. */ #endif #ifdef NO_UNDERSCORES /* Since C identifiers are not normally prefixed with an underscore on this system, the asm identifier `syscall_error' intrudes on the C name space. Make sure we use an innocuous name. */ #define syscall_error __syscall_error #define mcount _mcount #endif #define PSEUDO(name, syscall_name, args) \ .globl syscall_error; \ ENTRY (name) \ DO_CALL (syscall_name, args); \ jcc JUMPTARGET(syscall_error) #undef PSEUDO_END #define PSEUDO_END(name) \ END (name) #ifdef PIC #define JUMPTARGET(name) name##@PLTPC #else #define JUMPTARGET(name) name #endif #endif /* __ASSEMBLER__ */