[RFT] configure: Simplify alternate .text segment

Message ID	1371608954-86331-1-git-send-email-emaste@freebsd.org
State	New
Headers	show Return-Path: <qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org> From: Ed Maste <emaste@freebsd.org> To: qemu-devel@nongnu.org Date: Tue, 18 Jun 2013 22:29:14 -0400 Message-Id: <1371608954-86331-1-git-send-email-emaste@freebsd.org> Cc: Ed Maste <emaste@freebsd.org> Subject: [Qemu-devel] [RFT PATCH] configure: Simplify alternate .text segment Precedence: list Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org

diff --git a/configure b/configure index ad32f87..9d46354 100755 --- a/configure +++ b/configure @@ -4072,9 +4072,6 @@ if test "$gcov" = "yes" ; then echo "GCOV=$gcov_tool" >> $config_host_mak fi -# generate list of library paths for linker script -$ld --verbose -v 2> /dev/null | grep SEARCH_DIR > config-host.ld - # use included Linux headers if test "$linux" = "yes" ; then mkdir -p linux-headers @@ -4437,21 +4434,33 @@ if test "$gprof" = "yes" ; then fi fi -if test "$ARCH" = "tci"; then - linker_script="" -else - linker_script="-Wl,-T../config-host.ld -Wl,-T,\$(SRC_PATH)/ldscripts/\$(ARCH).ld" -fi - if test "$target_linux_user" = "yes" -o "$target_bsd_user" = "yes" ; then + textseg_addr= case "$ARCH" in - alpha | s390x | aarch64) - # The default placement of the application is fine. + arm | hppa | i386 | ia64 | m68k | ppc | ppc64 | s390 | sparc | sparc64 | x86_64) + default_textseg_addr=0x400000 + textseg_addr=0x60000000 ;; - *) - ldflags="$linker_script $ldflags" + mips) + default_textseg_addr=0x120000000 + textseg_addr=0x400000 ;; esac + if [ -n "$textseg_addr" ]; then + try_ldflags="-Ttext-segment=$textseg_addr" + if $ld $try_ldflags /dev/null >/dev/null 2>&1; then + ldflags="$ldflags $try_ldflags" + else + # In case ld does not support -Ttext-segment, edit the default linker + # script via sed to set the .text start addr. This is needed on FreeBSD + # at least. + $ld --verbose 2>/dev/null | sed \ + -e '1,/==================================================/d' \ + -e '/==================================================/,$d' \ + -e "s/$default_textseg_addr/$textseg_addr/g" > config-host.ld + ldflags="$ldflags -Wl,-T../config-host.ld" + fi + fi fi echo "LDFLAGS+=$ldflags" >> $config_target_mak diff --git a/ldscripts/alpha.ld b/ldscripts/alpha.ld deleted file mode 100644 index 906d76b..0000000 --- a/ldscripts/alpha.ld +++ /dev/null @@ -1,127 +0,0 @@ -OUTPUT_FORMAT("elf64-alpha", "elf64-alpha", - "elf64-alpha") -OUTPUT_ARCH(alpha) -ENTRY(__start) -SECTIONS -{ - /* Read-only sections, merged into text segment: */ - . = 0x60000000 + SIZEOF_HEADERS; - .interp : { *(.interp) } - .hash : { *(.hash) } - .dynsym : { *(.dynsym) } - .dynstr : { *(.dynstr) } - .gnu.version : { *(.gnu.version) } - .gnu.version_d : { *(.gnu.version_d) } - .gnu.version_r : { *(.gnu.version_r) } - .rel.text : - { *(.rel.text) *(.rel.gnu.linkonce.t*) } - .rela.text : - { *(.rela.text) *(.rela.gnu.linkonce.t*) } - .rel.data : - { *(.rel.data) *(.rel.gnu.linkonce.d*) } - .rela.data : - { *(.rela.data) *(.rela.gnu.linkonce.d*) } - .rel.rodata : - { *(.rel.rodata) *(.rel.gnu.linkonce.r*) } - .rela.rodata : - { *(.rela.rodata) *(.rela.gnu.linkonce.r*) } - .rel.got : { *(.rel.got) } - .rela.got : { *(.rela.got) } - .rel.ctors : { *(.rel.ctors) } - .rela.ctors : { *(.rela.ctors) } - .rel.dtors : { *(.rel.dtors) } - .rela.dtors : { *(.rela.dtors) } - .rel.init : { *(.rel.init) } - .rela.init : { *(.rela.init) } - .rel.fini : { *(.rel.fini) } - .rela.fini : { *(.rela.fini) } - .rel.bss : { *(.rel.bss) } - .rela.bss : { *(.rela.bss) } - .rel.plt : { *(.rel.plt) } - .rela.plt : { *(.rela.plt) } - .init : { *(.init) } =0x47ff041f - .text : - { - *(.text) - /* .gnu.warning sections are handled specially by elf32.em. */ - *(.gnu.warning) - *(.gnu.linkonce.t*) - } =0x47ff041f - _etext = .; - PROVIDE (etext = .); - .fini : { *(.fini) } =0x47ff041f - .rodata : { *(.rodata) *(.gnu.linkonce.r*) } - .rodata1 : { *(.rodata1) } - .reginfo : { *(.reginfo) } - /* Adjust the address for the data segment. We want to adjust up to - the same address within the page on the next page up. */ - . = ALIGN(0x100000) + (. & (0x100000 - 1)); - .data : - { - *(.data) - *(.gnu.linkonce.d*) - CONSTRUCTORS - } - .data1 : { *(.data1) } - .ctors : - { - *(.ctors) - } - .dtors : - { - *(.dtors) - } - .plt : { *(.plt) } - .got : { *(.got.plt) *(.got) } - .dynamic : { *(.dynamic) } - /* We want the small data sections together, so single-instruction offsets - can access them all, and initialized data all before uninitialized, so - we can shorten the on-disk segment size. */ - .sdata : { *(.sdata) } - _edata = .; - PROVIDE (edata = .); - __bss_start = .; - .sbss : { *(.sbss) *(.scommon) } - .bss : - { - *(.dynbss) - *(.bss) - *(COMMON) - } - _end = . ; - PROVIDE (end = .); - /* Stabs debugging sections. */ - .stab 0 : { *(.stab) } - .stabstr 0 : { *(.stabstr) } - .stab.excl 0 : { *(.stab.excl) } - .stab.exclstr 0 : { *(.stab.exclstr) } - .stab.index 0 : { *(.stab.index) } - .stab.indexstr 0 : { *(.stab.indexstr) } - .comment 0 : { *(.comment) } - /* DWARF debug sections. - Symbols in the DWARF debugging sections are relative to the beginning - of the section so we begin them at 0. */ - /* DWARF 1 */ - .debug 0 : { *(.debug) } - .line 0 : { *(.line) } - /* GNU DWARF 1 extensions */ - .debug_srcinfo 0 : { *(.debug_srcinfo) } - .debug_sfnames 0 : { *(.debug_sfnames) } - /* DWARF 1.1 and DWARF 2 */ - .debug_aranges 0 : { *(.debug_aranges) } - .debug_pubnames 0 : { *(.debug_pubnames) } - /* DWARF 2 */ - .debug_info 0 : { *(.debug_info) } - .debug_abbrev 0 : { *(.debug_abbrev) } - .debug_line 0 : { *(.debug_line) } - .debug_frame 0 : { *(.debug_frame) } - .debug_str 0 : { *(.debug_str) } - .debug_loc 0 : { *(.debug_loc) } - .debug_macinfo 0 : { *(.debug_macinfo) } - /* SGI/MIPS DWARF 2 extensions */ - .debug_weaknames 0 : { *(.debug_weaknames) } - .debug_funcnames 0 : { *(.debug_funcnames) } - .debug_typenames 0 : { *(.debug_typenames) } - .debug_varnames 0 : { *(.debug_varnames) } - /* These must appear regardless of . */ -} diff --git a/ldscripts/arm.ld b/ldscripts/arm.ld deleted file mode 100644 index 7f13da9..0000000 --- a/ldscripts/arm.ld +++ /dev/null @@ -1,153 +0,0 @@ -OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm", - "elf32-littlearm") -OUTPUT_ARCH(arm) -ENTRY(_start) -SECTIONS -{ - /* Read-only sections, merged into text segment: */ - . = 0x60000000 + SIZEOF_HEADERS; - .interp : { *(.interp) } - .hash : { *(.hash) } - .dynsym : { *(.dynsym) } - .dynstr : { *(.dynstr) } - .gnu.version : { *(.gnu.version) } - .gnu.version_d : { *(.gnu.version_d) } - .gnu.version_r : { *(.gnu.version_r) } - .rel.text : - { *(.rel.text) *(.rel.gnu.linkonce.t*) } - .rela.text : - { *(.rela.text) *(.rela.gnu.linkonce.t*) } - .rel.data : - { *(.rel.data) *(.rel.gnu.linkonce.d*) } - .rela.data : - { *(.rela.data) *(.rela.gnu.linkonce.d*) } - .rel.rodata : - { *(.rel.rodata) *(.rel.gnu.linkonce.r*) } - .rela.rodata : - { *(.rela.rodata) *(.rela.gnu.linkonce.r*) } - .rel.got : { *(.rel.got) } - .rela.got : { *(.rela.got) } - .rel.ctors : { *(.rel.ctors) } - .rela.ctors : { *(.rela.ctors) } - .rel.dtors : { *(.rel.dtors) } - .rela.dtors : { *(.rela.dtors) } - .rel.init : { *(.rel.init) } - .rela.init : { *(.rela.init) } - .rel.fini : { *(.rel.fini) } - .rela.fini : { *(.rela.fini) } - .rel.bss : { *(.rel.bss) } - .rela.bss : { *(.rela.bss) } - .rel.plt : { *(.rel.plt) } - .rela.plt : { *(.rela.plt) } - .init : { *(.init) } =0x47ff041f - .text : - { - *(.text) - /* .gnu.warning sections are handled specially by elf32.em. */ - *(.gnu.warning) - *(.gnu.linkonce.t*) - } =0x47ff041f - _etext = .; - PROVIDE (etext = .); - .fini : { *(.fini) } =0x47ff041f - .rodata : { *(.rodata) *(.gnu.linkonce.r*) } - .rodata1 : { *(.rodata1) } - .ARM.extab : { *(.ARM.extab* .gnu.linkonce.armextab.*) } - __exidx_start = .; - .ARM.exidx : { *(.ARM.exidx* .gnu.linkonce.armexidx.*) } - __exidx_end = .; - .reginfo : { *(.reginfo) } - /* Adjust the address for the data segment. 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[RFT] configure: Simplify alternate .text segment

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