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authorAustin Foxley <austinf@cetoncorp.com>2009-10-17 12:26:24 -0700
committerAustin Foxley <austinf@cetoncorp.com>2009-10-17 12:26:24 -0700
commitc68d0fa2d88fc2134a38d99e7e944828384a7671 (patch)
tree6596943bd1c77f18d6e49d4153ddd3f3d67b49f5 /libpthread/nptl/sysdeps/sh/sysdep.h
parent9a03e98a3b418f33c347a6023e9320f3a42cb9e4 (diff)
libpthread/nptl: core of the "Native Posix Threading Library" for uClibc
targetting arm,sh,i386,mips,sparc for now Signed-off-by: Austin Foxley <austinf@cetoncorp.com>
Diffstat (limited to 'libpthread/nptl/sysdeps/sh/sysdep.h')
-rw-r--r--libpthread/nptl/sysdeps/sh/sysdep.h82
1 files changed, 82 insertions, 0 deletions
diff --git a/libpthread/nptl/sysdeps/sh/sysdep.h b/libpthread/nptl/sysdeps/sh/sysdep.h
new file mode 100644
index 000000000..5b75198f9
--- /dev/null
+++ b/libpthread/nptl/sysdeps/sh/sysdep.h
@@ -0,0 +1,82 @@
+/* Assembler macros for SH.
+ Copyright (C) 1999, 2000, 2005 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>
+
+#include <features.h>
+#include <libc-internal.h>
+
+#ifdef __ASSEMBLER__
+
+/* Syntactic details of assembler. */
+
+#define ALIGNARG(log2) 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
+
+#ifdef SHARED
+#define PLTJMP(_x) _x##@PLT
+#else
+#define PLTJMP(_x) _x
+#endif
+
+/* Define an entry point visible from C. */
+#define ENTRY(name) \
+ ASM_GLOBAL_DIRECTIVE C_SYMBOL_NAME(name); \
+ ASM_TYPE_DIRECTIVE (C_SYMBOL_NAME(name),function) \
+ .align ALIGNARG(5); \
+ C_LABEL(name) \
+ cfi_startproc; \
+ CALL_MCOUNT
+
+#undef END
+#define END(name) \
+ cfi_endproc; \
+ ASM_SIZE_DIRECTIVE(C_SYMBOL_NAME(name))
+
+/* If compiled for profiling, call `mcount' at the start of each function. */
+#ifdef PROF
+#define CALL_MCOUNT \
+ mov.l 1f,r1; \
+ sts.l pr,@-r15; \
+ cfi_adjust_cfa_offset (4); \
+ cfi_rel_offset (pr, 0); \
+ mova 2f,r0; \
+ jmp @r1; \
+ lds r0,pr; \
+ .align 2; \
+1: .long mcount; \
+2: lds.l @r15+,pr; \
+ cfi_adjust_cfa_offset (-4); \
+ cfi_restore (pr)
+
+#else
+#define CALL_MCOUNT /* Do nothing. */
+#endif
+
+#ifdef __UCLIBC_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
+
+#endif /* __ASSEMBLER__ */