Prepare for radical source tree reorganization.zack/build-layout-experiment

All top-level files and directories are moved into a temporary storage
directory, REORG.TODO, except for files that will certainly still
exist in their current form at top level when we're done (COPYING,
COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which
are moved to the new directory OldChangeLogs, instead), and the
generated file INSTALL (which is just deleted; in the new order, there
will be no generated files checked into version control).

1 files changed, 425 insertions, 0 deletions

diff --git a/REORG.TODO/sysdeps/powerpc/powerpc64/sysdep.h b/REORG.TODO/sysdeps/powerpc/powerpc64/sysdep.h
new file mode 100644
index 0000000000..db7c1d78b5
--- /dev/null
+++ b/REORG.TODO/sysdeps/powerpc/powerpc64/sysdep.h
@@ -0,0 +1,425 @@
+/* Assembly macros for 64-bit PowerPC.
+   Copyright (C) 2002-2017 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, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <sysdeps/powerpc/sysdep.h>
+
+#ifdef __ASSEMBLER__
+
+/* Stack frame offsets.  */
+#if _CALL_ELF != 2
+#define FRAME_MIN_SIZE		112
+#define FRAME_MIN_SIZE_PARM	112
+#define FRAME_BACKCHAIN		0
+#define FRAME_CR_SAVE		8
+#define FRAME_LR_SAVE		16
+#define FRAME_TOC_SAVE		40
+#define FRAME_PARM_SAVE		48
+#define FRAME_PARM1_SAVE	48
+#define FRAME_PARM2_SAVE	56
+#define FRAME_PARM3_SAVE	64
+#define FRAME_PARM4_SAVE	72
+#define FRAME_PARM5_SAVE	80
+#define FRAME_PARM6_SAVE	88
+#define FRAME_PARM7_SAVE	96
+#define FRAME_PARM8_SAVE	104
+#define FRAME_PARM9_SAVE	112
+#else
+#define FRAME_MIN_SIZE		32
+#define FRAME_MIN_SIZE_PARM	96
+#define FRAME_BACKCHAIN		0
+#define FRAME_CR_SAVE		8
+#define FRAME_LR_SAVE		16
+#define FRAME_TOC_SAVE		24
+#define FRAME_PARM_SAVE		32
+#define FRAME_PARM1_SAVE	32
+#define FRAME_PARM2_SAVE	40
+#define FRAME_PARM3_SAVE	48
+#define FRAME_PARM4_SAVE	56
+#define FRAME_PARM5_SAVE	64
+#define FRAME_PARM6_SAVE	72
+#define FRAME_PARM7_SAVE	80
+#define FRAME_PARM8_SAVE	88
+#define FRAME_PARM9_SAVE	96
+#endif
+
+/* Support macros for CALL_MCOUNT.  */
+#if _CALL_ELF == 2
+#define call_mcount_parm_offset (-64)
+#else
+#define call_mcount_parm_offset FRAME_PARM_SAVE
+#endif
+	.macro SAVE_ARG NARG
+	.if \NARG
+	SAVE_ARG \NARG-1
+	std	2+\NARG,call_mcount_parm_offset-8+8*(\NARG)(1)
+	.endif
+	.endm
+
+	.macro REST_ARG NARG
+	.if \NARG
+	REST_ARG \NARG-1
+	ld	2+\NARG,FRAME_MIN_SIZE_PARM+call_mcount_parm_offset-8+8*(\NARG)(1)
+	.endif
+	.endm
+
+	.macro CFI_SAVE_ARG NARG
+	.if \NARG
+	CFI_SAVE_ARG \NARG-1
+	cfi_offset(2+\NARG,call_mcount_parm_offset-8+8*(\NARG))
+	.endif
+	.endm
+
+	.macro CFI_REST_ARG NARG
+	.if \NARG
+	CFI_REST_ARG \NARG-1
+	cfi_restore(2+\NARG)
+	.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,FRAME_LR_SAVE(r1)
+	stdu	r1,-FRAME_MIN_SIZE_PARM(r1)
+	cfi_adjust_cfa_offset(FRAME_MIN_SIZE_PARM)
+	cfi_offset(lr,FRAME_LR_SAVE)
+	CFI_SAVE_ARG \NARG
+	bl	JUMPTARGET (_mcount)
+#ifndef SHARED
+	nop
+#endif
+	ld	r0,FRAME_MIN_SIZE_PARM+FRAME_LR_SAVE(r1)
+	REST_ARG \NARG
+	mtlr	r0
+	addi	r1,r1,FRAME_MIN_SIZE_PARM
+	cfi_adjust_cfa_offset(-FRAME_MIN_SIZE_PARM)
+	cfi_restore(lr)
+	CFI_REST_ARG \NARG
+#endif
+	.endm
+
+#if _CALL_ELF != 2
+
+/* Macro to prepare for calling via a function pointer.  */
+	.macro PPC64_LOAD_FUNCPTR PTR
+	ld      r12,0(\PTR)
+	ld      r2,8(\PTR)
+	mtctr   r12
+	ld      r11,16(\PTR)
+	.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)	\
+	.type BODY_LABEL(name),@function;	\
+	.globl name;				\
+	.section ".opd","aw";			\
+	.align 3;				\
+name##: OPD_ENT (name);				\
+	.previous;
+
+#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);
+#define LOCALENTRY(name)
+
+#else /* _CALL_ELF */
+
+/* Macro to prepare for calling via a function pointer.  */
+	.macro PPC64_LOAD_FUNCPTR PTR
+	mr	r12,\PTR
+	mtctr   r12
+	.endm
+
+#define DOT_LABEL(X) X
+#define BODY_LABEL(X) X
+#define ENTRY_2(name)	\
+	.globl name;				\
+	.type name,@function;
+#define END_2(name)	\
+	.size name,.-name;
+#define LOCALENTRY(name)	\
+1:      addis	r2,r12,.TOC.-1b@ha; \
+        addi	r2,r2,.TOC.-1b@l; \
+	.localentry name,.-name;
+
+#endif /* _CALL_ELF */
+
+#define ENTRY(name)	\
+	.section	".text";		\
+	ENTRY_2(name)				\
+	.align ALIGNARG(2);			\
+BODY_LABEL(name):				\
+	cfi_startproc;				\
+	LOCALENTRY(name)
+
+#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) \
+	.section	".text";		\
+	ENTRY_2(name)				\
+	.align ALIGNARG(alignt);		\
+	EALIGN_W_##words;			\
+BODY_LABEL(name):				\
+	cfi_startproc;				\
+	LOCALENTRY(name)
+
+/* 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)
+
+#if !IS_IN(rtld) && defined (ENABLE_LOCK_ELISION)
+# define ABORT_TRANSACTION \
+    cmpdi    13,0;		\
+    beq      1f;		\
+    lwz      0,TM_CAPABLE(13);	\
+    cmpwi    0,0;		\
+    beq	     1f;		\
+    li       11,_ABORT_SYSCALL;	\
+    tabort.  11;		\
+    .align 4;                   \
+1:
+#else
+# define ABORT_TRANSACTION
+#endif
+
+#define DO_CALL(syscall) \
+    ABORT_TRANSACTION \
+    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));
+
+#ifdef SHARED
+#define TAIL_CALL_SYSCALL_ERROR \
+    b JUMPTARGET(__syscall_error)
+#else
+/* Static version might be linked into a large app with a toc exceeding
+   64k.  We can't put a toc adjusting stub on a plain branch, so can't
+   tail call __syscall_error.  */
+#define TAIL_CALL_SYSCALL_ERROR \
+    .ifdef .Local_syscall_error; \
+    b .Local_syscall_error; \
+    .else; \
+.Local_syscall_error: \
+    mflr 0; \
+    std 0,FRAME_LR_SAVE(1); \
+    stdu 1,-FRAME_MIN_SIZE(1); \
+    cfi_adjust_cfa_offset(FRAME_MIN_SIZE); \
+    cfi_offset(lr,FRAME_LR_SAVE); \
+    bl JUMPTARGET(__syscall_error); \
+    nop; \
+    ld 0,FRAME_MIN_SIZE+FRAME_LR_SAVE(1); \
+    addi 1,1,FRAME_MIN_SIZE; \
+    cfi_adjust_cfa_offset(-FRAME_MIN_SIZE); \
+    mtlr 0; \
+    cfi_restore(lr); \
+    blr; \
+    .endif
+#endif
+
+#define PSEUDO_RET \
+    bnslr+; \
+    TAIL_CALL_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__ */
+
+#if _CALL_ELF != 2
+
+#define PPC64_LOAD_FUNCPTR(ptr) \
+	"ld 	12,0(" #ptr ");\n"					\
+	"ld	2,8(" #ptr ");\n"					\
+	"mtctr	12;\n"							\
+	"ld	11,16(" #ptr ");"
+
+#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
+
+#define ENTRY_1(name)	\
+	".type   " BODY_PREFIX #name ",@function;\n"			\
+	".globl " #name ";\n"						\
+	".pushsection \".opd\",\"aw\";\n"				\
+	".align  3;\n"							\
+#name ":\n"								\
+	OPD_ENT (name) "\n"						\
+	".popsection;"
+
+#define DOT_PREFIX ""
+#define BODY_PREFIX ".LY"
+#define ENTRY_2(name)	\
+	".type " #name ",@function;\n"					\
+	ENTRY_1(name)
+#define END_2(name)	\
+	".size " #name ",.-" BODY_PREFIX #name ";\n"			\
+	".size " BODY_PREFIX #name ",.-" BODY_PREFIX #name ";"
+#define LOCALENTRY(name)
+
+#else /* _CALL_ELF */
+
+#define PPC64_LOAD_FUNCPTR(ptr) \
+	"mr	12," #ptr ";\n"						\
+	"mtctr 	12;"
+
+#define DOT_PREFIX ""
+#define BODY_PREFIX ""
+#define ENTRY_2(name)	\
+	".type " #name ",@function;\n"					\
+	".globl " #name ";"
+#define END_2(name)	\
+	".size " #name ",.-" #name ";"
+#define LOCALENTRY(name)	\
+	"1: addis 2,12,.TOC.-1b@ha;\n"					\
+	"addi	2,2,.TOC.-1b@l;\n"					\
+	".localentry " #name ",.-" #name ";"
+
+#endif /* _CALL_ELF */
+
+#endif	/* __ASSEMBLER__ */