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-rw-r--r--sysdeps/m68k/sysdep.h118
1 files changed, 118 insertions, 0 deletions
diff --git a/sysdeps/m68k/sysdep.h b/sysdeps/m68k/sysdep.h
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+++ b/sysdeps/m68k/sysdep.h
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+/* 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) \
+ STABS_CURRENT_FILE1(""); \
+ STABS_CURRENT_FILE(name); \
+ .globl C_SYMBOL_NAME(name); \
+ ASM_TYPE_DIRECTIVE (C_SYMBOL_NAME(name),@function); \
+ .align ALIGNARG(2); \
+ STABS_FUN(name); \
+ C_LABEL(name) \
+ CALL_MCOUNT
+
+#undef END
+#define END(name) \
+ ASM_SIZE_DIRECTIVE(name); \
+ STABS_FUN_END(name)
+
+/* Remove the following two lines once the gdb bug is fixed. */
+#define STABS_CURRENT_FILE(name) \
+ STABS_CURRENT_FILE1 (#name)
+#define STABS_CURRENT_FILE1(name) \
+ 1: .stabs name,100,0,0,1b
+/* Emit stabs definition lines. We use F(0,1) and define t(0,1) as `int',
+ the same way gcc does it. */
+#define STABS_FUN(name) STABS_FUN1(name, name##:F(0,1))
+#define STABS_FUN1(name, namestr) \
+ .stabs "int:t(0,1)=r(0,1);-2147483648;2147483647;",128,0,0,0; \
+ .stabs #namestr,36,0,0,name
+#define STABS_FUN_END(name) \
+ 1: .stabs "",36,0,0,1b-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 */