[U-Boot] [PATCH v1] arm: keep all sections in ELF file
Albert ARIBAUD
albert.u.boot at aribaud.net
Thu Nov 7 14:21:46 CET 2013
Current LDS files /DISCARD/ a lot of sections when linking ELF
files, causing diagnostic tools such as readelf or objdump to
produce partial output. Keep all section at link stage, filter
only at objcopy time so that .bin remains minimal.
Signed-off-by: Albert ARIBAUD <albert.u.boot at aribaud.net>
---
This is a repost of the previously posted RFC.
I have verified on an intermediate form of the patch (with .hash
and .got.plt kept in place) that the change was binary invariant
wrt master branch of ARM repo.
Please test on your HW to make sure the .bin is functional across
a selection of boards.
Makefile | 2 +-
arch/arm/config.mk | 3 +++
arch/arm/cpu/arm926ejs/mxs/u-boot-spl.lds | 16 +++++++++-------
arch/arm/cpu/arm926ejs/spear/u-boot-spl.lds | 16 +++++++++-------
arch/arm/cpu/ixp/u-boot.lds | 15 +++++++++------
arch/arm/cpu/u-boot-spl.lds | 15 +++++++++------
arch/arm/cpu/u-boot.lds | 18 ++++++++++--------
board/actux1/u-boot.lds | 15 +++++++++------
board/actux2/u-boot.lds | 15 +++++++++------
board/actux3/u-boot.lds | 15 +++++++++------
board/dvlhost/u-boot.lds | 15 +++++++++------
board/freescale/mx31ads/u-boot.lds | 18 +++++++++---------
board/ti/am335x/u-boot.lds | 15 +++++++++------
board/vpac270/u-boot-spl.lds | 18 +++++++++---------
14 files changed, 113 insertions(+), 83 deletions(-)
diff --git a/Makefile b/Makefile
index dc04179..4720db5 100644
--- a/Makefile
+++ b/Makefile
@@ -428,7 +428,7 @@ $(obj)u-boot.hex: $(obj)u-boot
$(OBJCOPY) ${OBJCFLAGS} -O ihex $< $@
$(obj)u-boot.srec: $(obj)u-boot
- $(OBJCOPY) -O srec $< $@
+ $(OBJCOPY) ${OBJCFLAGS} -O srec $< $@
$(obj)u-boot.bin: $(obj)u-boot
$(OBJCOPY) ${OBJCFLAGS} -O binary $< $@
diff --git a/arch/arm/config.mk b/arch/arm/config.mk
index bdabcf4..fd3e5fb 100644
--- a/arch/arm/config.mk
+++ b/arch/arm/config.mk
@@ -103,3 +103,6 @@ ALL-y += checkarmreloc
# such usage by requiring word relocations.
PLATFORM_CPPFLAGS += $(call cc-option, -mword-relocations)
endif
+
+# limit ourselves to the sections we want in the .bin.
+OBJCFLAGS += -j .text -j .rodata -j .data -j .u_boot_list -j .rel.dyn
diff --git a/arch/arm/cpu/arm926ejs/mxs/u-boot-spl.lds b/arch/arm/cpu/arm926ejs/mxs/u-boot-spl.lds
index 40bcc31..80fb9bd 100644
--- a/arch/arm/cpu/arm926ejs/mxs/u-boot-spl.lds
+++ b/arch/arm/cpu/arm926ejs/mxs/u-boot-spl.lds
@@ -51,11 +51,13 @@ SECTIONS
_end = .;
- /DISCARD/ : { *(.dynstr*) }
- /DISCARD/ : { *(.dynsym*) }
- /DISCARD/ : { *(.dynamic*) }
- /DISCARD/ : { *(.hash*) }
- /DISCARD/ : { *(.plt*) }
- /DISCARD/ : { *(.interp*) }
- /DISCARD/ : { *(.gnu*) }
+ .dynsym _end : { *(.dynsym) }
+ .dynbss : { *(.dynbss) }
+ .dynstr : { *(.dynstr*) }
+ .dynamic : { *(.dynamic*) }
+ .hash : { *(.hash*) }
+ .plt : { *(.plt*) }
+ .interp : { *(.interp*) }
+ .gnu : { *(.gnu*) }
+ .ARM.exidx : { *(.ARM.exidx*) }
}
diff --git a/arch/arm/cpu/arm926ejs/spear/u-boot-spl.lds b/arch/arm/cpu/arm926ejs/spear/u-boot-spl.lds
index 4927736..76b499d 100644
--- a/arch/arm/cpu/arm926ejs/spear/u-boot-spl.lds
+++ b/arch/arm/cpu/arm926ejs/spear/u-boot-spl.lds
@@ -51,11 +51,13 @@ SECTIONS
_end = .;
- /DISCARD/ : { *(.dynstr*) }
- /DISCARD/ : { *(.dynsym*) }
- /DISCARD/ : { *(.dynamic*) }
- /DISCARD/ : { *(.hash*) }
- /DISCARD/ : { *(.plt*) }
- /DISCARD/ : { *(.interp*) }
- /DISCARD/ : { *(.gnu*) }
+ .dynsym _end : { *(.dynsym) }
+ .dynbss : { *(.dynbss) }
+ .dynstr : { *(.dynstr*) }
+ .dynamic : { *(.dynamic*) }
+ .hash : { *(.hash*) }
+ .plt : { *(.plt*) }
+ .interp : { *(.interp*) }
+ .gnu : { *(.gnu*) }
+ .ARM.exidx : { *(.ARM.exidx*) }
}
diff --git a/arch/arm/cpu/ixp/u-boot.lds b/arch/arm/cpu/ixp/u-boot.lds
index c8d2e12..676ae2c 100644
--- a/arch/arm/cpu/ixp/u-boot.lds
+++ b/arch/arm/cpu/ixp/u-boot.lds
@@ -79,10 +79,13 @@ SECTIONS
KEEP(*(.__bss_end));
}
- /DISCARD/ : { *(.dynsym) }
- /DISCARD/ : { *(.dynstr*) }
- /DISCARD/ : { *(.dynamic*) }
- /DISCARD/ : { *(.plt*) }
- /DISCARD/ : { *(.interp*) }
- /DISCARD/ : { *(.gnu*) }
+ .dynsym _end : { *(.dynsym) }
+ .dynbss : { *(.dynbss) }
+ .dynstr : { *(.dynstr*) }
+ .dynamic : { *(.dynamic*) }
+ .hash : { *(.hash*) }
+ .plt : { *(.plt*) }
+ .interp : { *(.interp*) }
+ .gnu : { *(.gnu*) }
+ .ARM.exidx : { *(.ARM.exidx*) }
}
diff --git a/arch/arm/cpu/u-boot-spl.lds b/arch/arm/cpu/u-boot-spl.lds
index 36cc54a..4880d0f 100644
--- a/arch/arm/cpu/u-boot-spl.lds
+++ b/arch/arm/cpu/u-boot-spl.lds
@@ -51,12 +51,15 @@ SECTIONS
__bss_end = .;
}
- /DISCARD/ : { *(.dynsym) }
- /DISCARD/ : { *(.dynstr*) }
- /DISCARD/ : { *(.dynamic*) }
- /DISCARD/ : { *(.plt*) }
- /DISCARD/ : { *(.interp*) }
- /DISCARD/ : { *(.gnu*) }
+ .dynsym _end : { *(.dynsym) }
+ .dynbss : { *(.dynbss) }
+ .dynstr : { *(.dynstr*) }
+ .dynamic : { *(.dynamic*) }
+ .hash : { *(.hash*) }
+ .plt : { *(.plt*) }
+ .interp : { *(.interp*) }
+ .gnu : { *(.gnu*) }
+ .ARM.exidx : { *(.ARM.exidx*) }
}
#if defined(CONFIG_SPL_MAX_SIZE)
diff --git a/arch/arm/cpu/u-boot.lds b/arch/arm/cpu/u-boot.lds
index 23bf030..9463a33 100644
--- a/arch/arm/cpu/u-boot.lds
+++ b/arch/arm/cpu/u-boot.lds
@@ -91,12 +91,14 @@ SECTIONS
KEEP(*(.__bss_end));
}
- /DISCARD/ : { *(.dynsym) }
- /DISCARD/ : { *(.dynstr*) }
- /DISCARD/ : { *(.dynamic*) }
- /DISCARD/ : { *(.plt*) }
- /DISCARD/ : { *(.interp*) }
- /DISCARD/ : { *(.gnu*) }
- /DISCARD/ : { *(.ARM.exidx*) }
- /DISCARD/ : { *(.gnu.linkonce.armexidx.*) }
+ .dynsym _end : { *(.dynsym) }
+ .hash : { *(.hash) }
+ .got.plt : { *(.got.plt) }
+ .dynbss : { *(.dynbss) }
+ .dynstr : { *(.dynstr*) }
+ .dynamic : { *(.dynamic*) }
+ .plt : { *(.plt*) }
+ .interp : { *(.interp*) }
+ .gnu : { *(.gnu*) }
+ .ARM.exidx : { *(.ARM.exidx*) }
}
diff --git a/board/actux1/u-boot.lds b/board/actux1/u-boot.lds
index a656fa9..12e018f 100644
--- a/board/actux1/u-boot.lds
+++ b/board/actux1/u-boot.lds
@@ -87,10 +87,13 @@ SECTIONS
KEEP(*(.__bss_end));
}
- /DISCARD/ : { *(.dynsym) }
- /DISCARD/ : { *(.dynstr*) }
- /DISCARD/ : { *(.dynamic*) }
- /DISCARD/ : { *(.plt*) }
- /DISCARD/ : { *(.interp*) }
- /DISCARD/ : { *(.gnu*) }
+ .dynsym _end : { *(.dynsym) }
+ .dynbss : { *(.dynbss) }
+ .dynstr : { *(.dynstr*) }
+ .dynamic : { *(.dynamic*) }
+ .hash : { *(.hash*) }
+ .plt : { *(.plt*) }
+ .interp : { *(.interp*) }
+ .gnu : { *(.gnu*) }
+ .ARM.exidx : { *(.ARM.exidx*) }
}
diff --git a/board/actux2/u-boot.lds b/board/actux2/u-boot.lds
index 7a17176..300273b 100644
--- a/board/actux2/u-boot.lds
+++ b/board/actux2/u-boot.lds
@@ -87,10 +87,13 @@ SECTIONS
KEEP(*(.__bss_end));
}
- /DISCARD/ : { *(.dynsym) }
- /DISCARD/ : { *(.dynstr*) }
- /DISCARD/ : { *(.dynamic*) }
- /DISCARD/ : { *(.plt*) }
- /DISCARD/ : { *(.interp*) }
- /DISCARD/ : { *(.gnu*) }
+ .dynsym _end : { *(.dynsym) }
+ .dynbss : { *(.dynbss) }
+ .dynstr : { *(.dynstr*) }
+ .dynamic : { *(.dynamic*) }
+ .hash : { *(.hash*) }
+ .plt : { *(.plt*) }
+ .interp : { *(.interp*) }
+ .gnu : { *(.gnu*) }
+ .ARM.exidx : { *(.ARM.exidx*) }
}
diff --git a/board/actux3/u-boot.lds b/board/actux3/u-boot.lds
index aadfdd2..9c97c53 100644
--- a/board/actux3/u-boot.lds
+++ b/board/actux3/u-boot.lds
@@ -87,10 +87,13 @@ SECTIONS
KEEP(*(.__bss_end));
}
- /DISCARD/ : { *(.dynsym) }
- /DISCARD/ : { *(.dynstr*) }
- /DISCARD/ : { *(.dynamic*) }
- /DISCARD/ : { *(.plt*) }
- /DISCARD/ : { *(.interp*) }
- /DISCARD/ : { *(.gnu*) }
+ .dynsym _end : { *(.dynsym) }
+ .dynbss : { *(.dynbss) }
+ .dynstr : { *(.dynstr*) }
+ .dynamic : { *(.dynamic*) }
+ .hash : { *(.hash*) }
+ .plt : { *(.plt*) }
+ .interp : { *(.interp*) }
+ .gnu : { *(.gnu*) }
+ .ARM.exidx : { *(.ARM.exidx*) }
}
diff --git a/board/dvlhost/u-boot.lds b/board/dvlhost/u-boot.lds
index 40c9c80..057d94b 100644
--- a/board/dvlhost/u-boot.lds
+++ b/board/dvlhost/u-boot.lds
@@ -87,10 +87,13 @@ SECTIONS
KEEP(*(.__bss_end));
}
- /DISCARD/ : { *(.dynsym) }
- /DISCARD/ : { *(.dynstr*) }
- /DISCARD/ : { *(.dynamic*) }
- /DISCARD/ : { *(.plt*) }
- /DISCARD/ : { *(.interp*) }
- /DISCARD/ : { *(.gnu*) }
+ .dynsym _end : { *(.dynsym) }
+ .dynbss : { *(.dynbss) }
+ .dynstr : { *(.dynstr*) }
+ .dynamic : { *(.dynamic*) }
+ .hash : { *(.hash*) }
+ .plt : { *(.plt*) }
+ .interp : { *(.interp*) }
+ .gnu : { *(.gnu*) }
+ .ARM.exidx : { *(.ARM.exidx*) }
}
diff --git a/board/freescale/mx31ads/u-boot.lds b/board/freescale/mx31ads/u-boot.lds
index 3acc4ca..6cfca2d 100644
--- a/board/freescale/mx31ads/u-boot.lds
+++ b/board/freescale/mx31ads/u-boot.lds
@@ -90,13 +90,13 @@ SECTIONS
KEEP(*(.__bss_end));
}
- /DISCARD/ : { *(.bss*) }
- /DISCARD/ : { *(.dynsym) }
- /DISCARD/ : { *(.dynstr*) }
- /DISCARD/ : { *(.dynsym*) }
- /DISCARD/ : { *(.dynamic*) }
- /DISCARD/ : { *(.hash*) }
- /DISCARD/ : { *(.plt*) }
- /DISCARD/ : { *(.interp*) }
- /DISCARD/ : { *(.gnu*) }
+ .dynsym _end : { *(.dynsym) }
+ .dynbss : { *(.dynbss) }
+ .dynstr : { *(.dynstr*) }
+ .dynamic : { *(.dynamic*) }
+ .hash : { *(.hash*) }
+ .plt : { *(.plt*) }
+ .interp : { *(.interp*) }
+ .gnu : { *(.gnu*) }
+ .ARM.exidx : { *(.ARM.exidx*) }
}
diff --git a/board/ti/am335x/u-boot.lds b/board/ti/am335x/u-boot.lds
index a173f62..9f96a43 100644
--- a/board/ti/am335x/u-boot.lds
+++ b/board/ti/am335x/u-boot.lds
@@ -108,10 +108,13 @@ SECTIONS
KEEP(*(.__bss_end));
}
- /DISCARD/ : { *(.dynsym) }
- /DISCARD/ : { *(.dynstr*) }
- /DISCARD/ : { *(.dynamic*) }
- /DISCARD/ : { *(.plt*) }
- /DISCARD/ : { *(.interp*) }
- /DISCARD/ : { *(.gnu*) }
+ .dynsym _end : { *(.dynsym) }
+ .dynbss : { *(.dynbss) }
+ .dynstr : { *(.dynstr*) }
+ .dynamic : { *(.dynamic*) }
+ .hash : { *(.hash*) }
+ .plt : { *(.plt*) }
+ .interp : { *(.interp*) }
+ .gnu : { *(.gnu*) }
+ .ARM.exidx : { *(.ARM.exidx*) }
}
diff --git a/board/vpac270/u-boot-spl.lds b/board/vpac270/u-boot-spl.lds
index 7eac497..08c78b3 100644
--- a/board/vpac270/u-boot-spl.lds
+++ b/board/vpac270/u-boot-spl.lds
@@ -62,13 +62,13 @@ SECTIONS
__bss_end = .;
}
- /DISCARD/ : { *(.bss*) }
- /DISCARD/ : { *(.dynsym) }
- /DISCARD/ : { *(.dynstr*) }
- /DISCARD/ : { *(.dynsym*) }
- /DISCARD/ : { *(.dynamic*) }
- /DISCARD/ : { *(.hash*) }
- /DISCARD/ : { *(.plt*) }
- /DISCARD/ : { *(.interp*) }
- /DISCARD/ : { *(.gnu*) }
+ .dynsym _end : { *(.dynsym) }
+ .dynbss : { *(.dynbss) }
+ .dynstr : { *(.dynstr*) }
+ .dynamic : { *(.dynamic*) }
+ .hash : { *(.hash*) }
+ .plt : { *(.plt*) }
+ .interp : { *(.interp*) }
+ .gnu : { *(.gnu*) }
+ .ARM.exidx : { *(.ARM.exidx*) }
}
--
1.8.3.2
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