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[src/trunk]: src/sys/arch/sbmips/stand Use a ldscript to make sure boot progr...



details:   https://anonhg.NetBSD.org/src/rev/b9bbb2d041a0
branches:  trunk
changeset: 772879:b9bbb2d041a0
user:      matt <matt%NetBSD.org@localhost>
date:      Thu Jan 19 19:58:16 2012 +0000

description:
Use a ldscript to make sure boot programs are linked correctly.

diffstat:

 sys/arch/sbmips/stand/Makefile.bootprogs   |    4 +-
 sys/arch/sbmips/stand/boot/Makefile        |    6 +-
 sys/arch/sbmips/stand/common/boot.ldscript |  262 +++++++++++++++++++++++++++++
 sys/arch/sbmips/stand/netboot/Makefile     |    6 +-
 4 files changed, 271 insertions(+), 7 deletions(-)

diffs (truncated from 324 to 300 lines):

diff -r 2174f714e332 -r b9bbb2d041a0 sys/arch/sbmips/stand/Makefile.bootprogs
--- a/sys/arch/sbmips/stand/Makefile.bootprogs  Thu Jan 19 18:35:27 2012 +0000
+++ b/sys/arch/sbmips/stand/Makefile.bootprogs  Thu Jan 19 19:58:16 2012 +0000
@@ -1,4 +1,4 @@
-# $NetBSD: Makefile.bootprogs,v 1.9 2011/02/20 07:47:39 matt Exp $
+# $NetBSD: Makefile.bootprogs,v 1.10 2012/01/19 19:58:16 matt Exp $
 
 .include <bsd.own.mk>
 .include <bsd.sys.mk>          # for HOST_SH
@@ -65,6 +65,8 @@
 REGION1_START=         0x20000000              # "Region 1 start"
 REGION1_SIZE!=         expr 256 \* 1024        # 256k
 
+LDSCRIPT=              ${.CURDIR}/../common/boot.ldscript
+
 # our memory lauout:
 
 #      'unified' boot loaders (e.g. netboot) can consume all of region
diff -r 2174f714e332 -r b9bbb2d041a0 sys/arch/sbmips/stand/boot/Makefile
--- a/sys/arch/sbmips/stand/boot/Makefile       Thu Jan 19 18:35:27 2012 +0000
+++ b/sys/arch/sbmips/stand/boot/Makefile       Thu Jan 19 19:58:16 2012 +0000
@@ -1,4 +1,4 @@
-# $NetBSD: Makefile,v 1.2 2011/02/20 07:47:39 matt Exp $
+# $NetBSD: Makefile,v 1.3 2012/01/19 19:58:16 matt Exp $
 
 PROG = boot
 
@@ -25,8 +25,8 @@
 SAMISCMAKEFLAGS= SA_INCLUDE_NET=no SA_USE_CREAD=yes
 .include "../Makefile.bootprogs"
 
-${PROG}.sym: ${OBJS} ${LIBSA} ${LIBZ} ${LIBKERN}
+${PROG}.sym: ${OBJS} ${LIBSA} ${LIBZ} ${LIBKERN} ${LDSCRIPT}
        ${_MKTARGET_LINK}
-       ${LD} -Ttext ${BOOT_RELOC} -N -e start -o ${PROG}.sym \
+       ${LD} -T ${LDSCRIPT} -N -e start -o ${PROG}.sym \
            ${OBJS} ${LIBSA} ${LIBZ} ${LIBSA} ${LIBKERN}
        ${SIZE} ${PROG}.sym
diff -r 2174f714e332 -r b9bbb2d041a0 sys/arch/sbmips/stand/common/boot.ldscript
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/arch/sbmips/stand/common/boot.ldscript        Thu Jan 19 19:58:16 2012 +0000
@@ -0,0 +1,262 @@
+/* Script for -N: mix text and data on same page; don't align data */
+OUTPUT_FORMAT("elf32-tradbigmips", "elf32-tradbigmips",
+             "elf32-tradlittlemips")
+OUTPUT_ARCH(mips)
+ENTRY(__start)
+SEARCH_DIR("=/usr/lib");
+SECTIONS
+{
+  /* Read-only sections, merged into text segment: */
+  PROVIDE (__executable_start = SEGMENT_START("text-segment", 0x20000000)); . = SEGMENT_START("text-segment", 0x20000000) + SIZEOF_HEADERS;
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+  {
+    _ftext = . ;
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+    *(.text.exit .text.exit.*)
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+     the same address within the page on the next page up.  */
+  . = .;
+  /* Exception handling  */
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+  /* Thread Local Storage sections  */
+  .tdata         : { *(.tdata .tdata.* .gnu.linkonce.td.*) }
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+  {
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+      _end.  Align after .bss to ensure correct alignment even if the
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+      FIXME: Why do we need it? When there is no .bss section, we don't
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