powerpc: Add TLS and NPTL support

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

1 files changed, 264 insertions, 0 deletions

diff --git a/libc/sysdeps/linux/powerpc/powerpc64/sysdep.h b/libc/sysdeps/linux/powerpc/powerpc64/sysdep.h
new file mode 100644
index 000000000..467288576
--- /dev/null
+++ b/libc/sysdeps/linux/powerpc/powerpc64/sysdep.h
@@ -0,0 +1,264 @@
+/* Assembly macros for 64-bit PowerPC.
+   Copyright (C) 2002, 2003, 2004, 2006 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., 51 Franklin Street, Fifth Floor, Boston MA
+   02110-1301 USA.  */
+
+#ifdef __ELF__
+
+#ifdef __ASSEMBLER__
+
+/* Support macros for CALL_MCOUNT.  */
+	.macro SAVE_ARG NARG
+	.if \NARG
+	SAVE_ARG \NARG-1
+	std	2+\NARG,-72+8*(\NARG)(1)
+	.endif
+	.endm
+
+	.macro REST_ARG NARG
+	.if \NARG
+	REST_ARG \NARG-1
+	ld	2+\NARG,40+8*(\NARG)(1)
+	.endif
+	.endm
+
+/* If compiled for profiling, call `_mcount' at the start of each function.
+   see ppc-mcount.S for more details.  */
+	.macro CALL_MCOUNT NARG
+#ifdef	PROF
+	mflr	r0
+	SAVE_ARG \NARG
+	std	r0,16(r1)
+	stdu	r1,-112(r1)
+	bl	JUMPTARGET (_mcount)
+	ld	r0,128(r1)
+	REST_ARG \NARG
+	addi	r1,r1,112
+	mtlr	r0
+#endif
+	.endm
+
+#ifdef USE_PPC64_OVERLAPPING_OPD
+# define OPD_ENT(name)	.quad BODY_LABEL (name), .TOC.@tocbase
+#else
+# define OPD_ENT(name)	.quad BODY_LABEL (name), .TOC.@tocbase, 0
+#endif
+
+#define ENTRY_1(name)	\
+	.section	".text";		\
+	.type BODY_LABEL(name),@function;	\
+	.globl name;				\
+	.section ".opd","aw";			\
+	.align 3;				\
+name##: OPD_ENT (name);				\
+	.previous;
+
+#ifdef HAVE_ASM_GLOBAL_DOT_NAME
+# define DOT_LABEL(X) .##X
+# define BODY_LABEL(X) .##X
+# define ENTRY_2(name)	\
+	.globl BODY_LABEL(name);		\
+	ENTRY_1(name)				\
+	.size name, 24;
+# define END_2(name)	\
+	.size BODY_LABEL(name),.-BODY_LABEL(name);
+#else
+# define DOT_LABEL(X) X
+# define BODY_LABEL(X) .LY##X
+# define ENTRY_2(name)	\
+	.type name,@function;			\
+	ENTRY_1(name)
+# define END_2(name)	\
+	.size name,.-BODY_LABEL(name);		\
+	.size BODY_LABEL(name),.-BODY_LABEL(name);
+#endif
+
+#define ENTRY(name)	\
+	ENTRY_2(name)				\
+	.align ALIGNARG(2);			\
+BODY_LABEL(name):				\
+	cfi_startproc;
+
+#define EALIGN_W_0  /* No words to insert.  */
+#define EALIGN_W_1  nop
+#define EALIGN_W_2  nop;nop
+#define EALIGN_W_3  nop;nop;nop
+#define EALIGN_W_4  EALIGN_W_3;nop
+#define EALIGN_W_5  EALIGN_W_4;nop
+#define EALIGN_W_6  EALIGN_W_5;nop
+#define EALIGN_W_7  EALIGN_W_6;nop
+
+/* EALIGN is like ENTRY, but does alignment to 'words'*4 bytes
+   past a 2^alignt boundary.  */
+#define EALIGN(name, alignt, words) \
+	ENTRY_2(name)				\
+	.align ALIGNARG(alignt);		\
+	EALIGN_W_##words;			\
+BODY_LABEL(name):				\
+	cfi_startproc;
+
+/* Local labels stripped out by the linker.  */
+#undef L
+#define L(x) .L##x
+
+#define tostring(s) #s
+#define stringify(s) tostring(s)
+#define XGLUE(a,b) a##b
+#define GLUE(a,b) XGLUE(a,b)
+#define LT_LABEL(name) GLUE(.LT,name)
+#define LT_LABELSUFFIX(name,suffix) GLUE(GLUE(.LT,name),suffix)
+
+/* Support Traceback tables */
+#define TB_ASM			0x000c000000000000
+#define TB_GLOBALLINK		0x0000800000000000
+#define TB_IS_EPROL		0x0000400000000000
+#define TB_HAS_TBOFF		0x0000200000000000
+#define TB_INT_PROC		0x0000100000000000
+#define TB_HAS_CTL		0x0000080000000000
+#define TB_TOCLESS		0x0000040000000000
+#define TB_FP_PRESENT		0x0000020000000000
+#define TB_LOG_ABORT		0x0000010000000000
+#define TB_INT_HANDL		0x0000008000000000
+#define TB_NAME_PRESENT		0x0000004000000000
+#define TB_USES_ALLOCA		0x0000002000000000
+#define TB_SAVES_CR		0x0000000200000000
+#define TB_SAVES_LR		0x0000000100000000
+#define TB_STORES_BC		0x0000000080000000
+#define TB_FIXUP		0x0000000040000000
+#define TB_FP_SAVED(fprs)	(((fprs) & 0x3f) << 24)
+#define TB_GPR_SAVED(gprs)	(((fprs) & 0x3f) << 16)
+#define TB_FIXEDPARMS(parms)	(((parms) & 0xff) << 8)
+#define TB_FLOATPARMS(parms)	(((parms) & 0x7f) << 1)
+#define TB_PARMSONSTK		0x0000000000000001
+
+#define PPC_HIGHER(v) 		(((v) >> 32) & 0xffff)
+#define TB_DEFAULT		TB_ASM | TB_HAS_TBOFF | TB_NAME_PRESENT
+
+#define TRACEBACK(name) \
+LT_LABEL(name): ; \
+	.long	0 ; \
+	.quad	TB_DEFAULT ; \
+	.long	LT_LABEL(name)-BODY_LABEL(name) ; \
+	.short	LT_LABELSUFFIX(name,_name_end)-LT_LABELSUFFIX(name,_name_start) ; \
+LT_LABELSUFFIX(name,_name_start): ;\
+	.ascii	stringify(name) ; \
+LT_LABELSUFFIX(name,_name_end): ; \
+	.align	2 ;
+
+#define TRACEBACK_MASK(name,mask) \
+LT_LABEL(name): ; \
+	.long	0 ; \
+	.quad	TB_DEFAULT | mask ; \
+	.long	LT_LABEL(name)-BODY_LABEL(name) ; \
+	.short	LT_LABELSUFFIX(name,_name_end)-LT_LABELSUFFIX(name,_name_start) ; \
+LT_LABELSUFFIX(name,_name_start): ;\
+	.ascii	stringify(name) ; \
+LT_LABELSUFFIX(name,_name_end): ; \
+	.align	2 ;
+
+/* END generates Traceback tables */
+#undef	END
+#define END(name) \
+  cfi_endproc;			\
+  TRACEBACK(name)		\
+  END_2(name)
+
+/* This form supports more informative traceback tables */
+#define END_GEN_TB(name,mask)	\
+  cfi_endproc;			\
+  TRACEBACK_MASK(name,mask)	\
+  END_2(name)
+
+#define DO_CALL(syscall) \
+    li 0,syscall; \
+    sc
+
+/* ppc64 is always PIC */
+#undef JUMPTARGET
+#define JUMPTARGET(name) DOT_LABEL(name)
+
+#define PSEUDO(name, syscall_name, args) \
+  .section ".text";	\
+  ENTRY (name) \
+  DO_CALL (SYS_ify (syscall_name));
+
+#define PSEUDO_RET \
+    bnslr+; \
+    b JUMPTARGET(__syscall_error)
+
+#define ret PSEUDO_RET
+
+#undef	PSEUDO_END
+#define	PSEUDO_END(name) \
+  END (name)
+
+#define PSEUDO_NOERRNO(name, syscall_name, args) \
+  .section ".text";	\
+  ENTRY (name) \
+  DO_CALL (SYS_ify (syscall_name));
+
+#define PSEUDO_RET_NOERRNO \
+    blr
+
+#define ret_NOERRNO PSEUDO_RET_NOERRNO
+
+#undef	PSEUDO_END_NOERRNO
+#define	PSEUDO_END_NOERRNO(name) \
+  END (name)
+
+#define PSEUDO_ERRVAL(name, syscall_name, args) \
+  .section ".text";	\
+  ENTRY (name) \
+  DO_CALL (SYS_ify (syscall_name));
+
+#define PSEUDO_RET_ERRVAL \
+    blr
+
+#define ret_ERRVAL PSEUDO_RET_ERRVAL
+
+#undef	PSEUDO_END_ERRVAL
+#define	PSEUDO_END_ERRVAL(name) \
+  END (name)
+
+#else /* !__ASSEMBLER__ */
+
+#ifdef USE_PPC64_OVERLAPPING_OPD
+# define OPD_ENT(name)	".quad " BODY_PREFIX #name ", .TOC.@tocbase;"
+#else
+# define OPD_ENT(name)	".quad " BODY_PREFIX #name ", .TOC.@tocbase, 0;"
+#endif
+
+#ifdef HAVE_ASM_GLOBAL_DOT_NAME
+# define DOT_PREFIX "."
+# define BODY_PREFIX "."
+# define ENTRY_2(name)	\
+	".globl " BODY_PREFIX #name ";\n"				\
+	".size  " #name ", 24;"
+# define END_2(name)	\
+	".size " BODY_PREFIX #name ",.-" BODY_PREFIX #name ";"
+#else
+# define DOT_PREFIX ""
+# define BODY_PREFIX ".LY"
+# define ENTRY_2(name) ".type " #name ",@function;"
+# define END_2(name)	\
+	".size " #name ",.-" BODY_PREFIX #name ";\n"			\
+	".size " BODY_PREFIX #name ",.-" BODY_PREFIX #name ";"
+#endif
+
+#endif	/* __ASSEMBLER__ */
+
+#endif /* __ELF__ */