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authorUlrich Drepper <drepper@redhat.com>2004-12-22 20:10:10 +0000
committerUlrich Drepper <drepper@redhat.com>2004-12-22 20:10:10 +0000
commita334319f6530564d22e775935d9c91663623a1b4 (patch)
treeb5877475619e4c938e98757d518bb1e9cbead751 /sysdeps/m68k/sysdep.h
parent0ecb606cb6cf65de1d9fc8a919bceb4be476c602 (diff)
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(CFLAGS-tst-align.c): Add -mpreferred-stack-boundary=4.
Diffstat (limited to 'sysdeps/m68k/sysdep.h')
-rw-r--r--sysdeps/m68k/sysdep.h100
1 files changed, 100 insertions, 0 deletions
diff --git a/sysdeps/m68k/sysdep.h b/sysdeps/m68k/sysdep.h
new file mode 100644
index 0000000000..f492ff617c
--- /dev/null
+++ b/sysdeps/m68k/sysdep.h
@@ -0,0 +1,100 @@
+/* Assembler macros for m68k.
+ Copyright (C) 1998, 2003 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, 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)
+
+# undef JUMPTARGET
+# ifdef PIC
+# define JUMPTARGET(name) name##@PLTPC
+# else
+# define JUMPTARGET(name) name
+# endif
+
+#endif /* __ASSEMBLER__ */