IABSD.fr/src/lib/csu/powerpc64

Branch : - branch - master - tag -

• Show log

  Commit

• Author : drahn
  Date : 2020-06-26 19:57:02
  Hash : 6becf282
  Message : Fix powerpc64 pie binraries, in register renumbering one line was missed.

• md_init.h

• /* $OpenBSD: md_init.h,v 1.2 2020/06/26 19:57:02 drahn Exp $ */
  
  /*
   * Copyright (c) 2020 Dale Rahn <drahn@openbsd.org>
   *
   * Permission to use, copy, modify, and distribute this software for any
   * purpose with or without fee is hereby granted, provided that the above
   * copyright notice and this permission notice appear in all copies.
   *
   * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
   * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
   * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
   * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
   * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
   * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
   */
  
  #define MD_SECT_CALL_FUNC(section, func)				\
  	__asm (".section "#section", \"ax\"				\n" \
  	"	bl " #func "						\n" \
  	"	.previous")
  
  #define MD_SECTION_PROLOGUE(sect, entry_pt)				\
  	__asm (								\
  	".section "#sect",\"ax\",@progbits				\n" \
  	"	.globl " #entry_pt "					\n" \
  	"	.type " #entry_pt ",@function				\n" \
  	"	.align 4						\n" \
  	#entry_pt":							\n" \
  	".L_"sect"_gep:							\n" \
  	"	addis %r2, %r12, .TOC.-.L_"sect"_gep@ha			\n" \
  	"	addi %r2, %r2, .TOC.-.L_"sect"_gep@l			\n" \
  	".L_"sect"_lep:							\n" \
  	"	.localentry " #entry_pt", .L_"sect"_lep-.L_"sect"_gep;	\n" \
  	"	mflr	%r0						\n" \
  	"	std	%r0,16(%r1)					\n" \
  	"	stdu	%r1,-64(%r1)					\n" \
  	"	/* fall thru */						\n" \
  	"	.previous")
  
  
  #define MD_SECTION_EPILOGUE(sect)					\
  	__asm (								\
  	".section "#sect",\"ax\",@progbits				\n" \
  	"	addi	%r1,%r1,64					\n" \
  	"	ld	%r0,16(%r1)					\n" \
  	"	mtlr	%r0						\n" \
  	"	blr							\n" \
  	"	.previous")
  
  #include <sys/syscall.h>	/* for SYS_mprotect */
  
  #define STR(x) __STRING(x)
  
  #define	MD_CRT0_START							\
  __asm(									\
  "	.text								\n" \
  "	.section	\".text\"					\n" \
  "	.align 2							\n" \
  "	.globl	_start							\n" \
  "	.type	_start, @function					\n" \
  "	.globl	__start							\n" \
  "	.type	__start, @function					\n" \
  "_start:								\n" \
  "__start:								\n" \
  "	bl	1f							\n" \
  "1:									\n" \
  "	mflr	%r30							\n" \
  "	addis	%r2, %r30, .TOC.-1b@ha					\n" \
  "	addi	%r2, %r2, .TOC.-1b@l					\n" \
  "	# put cleanup in r6 instead of r7				\n" \
  "	mr	%r6, %r7						\n" \
  "	li	%r7, 0							\n" \
  "	stdu	%r7, -64(%r1)						\n" \
  "	b ___start							\n" \
  )
  
  #define	MD_RCRT0_START							\
  __asm(									\
  "	.text								\n" \
  "	.section	\".text\"					\n" \
  "	.align 2							\n" \
  "	.globl	_start							\n" \
  "	.type	_start, @function					\n" \
  "	.globl	__start							\n" \
  "	.type	__start, @function					\n" \
  "_start:								\n" \
  "__start:								\n" \
  "	bl	1f							\n" \
  "1:									\n" \
  "	mflr	%r31							\n" \
  "	addis	%r2, %r31, .TOC.-1b@ha					\n" \
  "	addi	%r2, %r2, .TOC.-1b@l					\n" \
  "	stdu	1, (-48 -((9+3)*8))(%r1) # allocate dl_data		\n" \
  "									\n" \
  "	# Preserve program parameters during setup 			\n" \
  "	mr %r15, %r3			# argc				\n" \
  "	mr %r16, %r4			# argv				\n" \
  "	mr %r17, %r5			# envp				\n" \
  "									\n" \
  "	addis	%r14, %r2, _DYNAMIC@toc@ha				\n" \
  "	addi	%r14, %r14, _DYNAMIC@toc@l				\n" \
  "									\n" \
  "	subi	%r3, %r16, 8	# pointer to argc on stack.		\n" \
  "	addi	%r4, %r1, 48	# dl_data				\n" \
  "	mr	%r5, %r14	# dynamicp				\n" \
  "									\n" \
  "      bl      _dl_boot_bind						\n" \
  "									\n" \
  "	# restore program arguments 					\n" \
  "	mr %r3, %r15							\n" \
  "	mr %r4, %r16							\n" \
  "	mr %r5, %r17							\n" \
  "	li %r6, 0							\n" \
  "	bl ___start							\n" \
  "									\n" \
  "	.globl	_dl_exit						\n" \
  "	.type	_dl_exit, @function					\n" \
  "_dl_exit:								\n" \
  "	li	%r0, " STR(SYS_exit) "					\n" \
  "	sc								\n" \
  "	blr								\n" \
  )