[U-Boot] [PATCH v4 2/3] arm: make _end compiler-generated

8 Jan 2014

This prevents references to _end from generating absolute
relocation records.
This change is binary invariant for ARM targets.
Signed-off-by: Albert ARIBAUD albert.u.boot@aribaud.net
---
Changes in v4: None
Changes in v3:
- Replace _end in linker scripts with _image_binary_end
Changes in v2: None
arch/arm/cpu/arm1136/u-boot-spl.lds            | 6 +++++-
 arch/arm/cpu/arm920t/ep93xx/u-boot.lds         | 5 ++++-
 arch/arm/cpu/arm926ejs/mxs/u-boot-spl.lds      | 9 +++++++--
 arch/arm/cpu/arm926ejs/spear/u-boot-spl.lds    | 9 +++++++--
 arch/arm/cpu/armv7/am33xx/u-boot-spl.lds       | 6 +++++-
 arch/arm/cpu/armv7/omap-common/u-boot-spl.lds  | 6 +++++-
 arch/arm/cpu/armv7/socfpga/u-boot-spl.lds      | 6 +++++-
 arch/arm/cpu/at91-common/u-boot-spl.lds        | 6 +++++-
 arch/arm/cpu/ixp/u-boot.lds                    | 9 +++++++--
 arch/arm/cpu/u-boot-spl.lds                    | 9 +++++++--
 arch/arm/cpu/u-boot.lds                        | 9 +++++++--
 arch/arm/lib/Makefile                          | 2 +-
 arch/arm/lib/sections.c                        | 1 +
 board/Barix/ipam390/u-boot-spl-ipam390.lds     | 6 +++++-
 board/actux1/u-boot.lds                        | 9 +++++++--
 board/actux2/u-boot.lds                        | 9 +++++++--
 board/actux3/u-boot.lds                        | 9 +++++++--
 board/ait/cam_enc_4xx/u-boot-spl.lds           | 6 +++++-
 board/compulab/cm_t335/u-boot.lds              | 9 +++++++--
 board/davinci/da8xxevm/u-boot-spl-da850evm.lds | 6 +++++-
 board/davinci/da8xxevm/u-boot-spl-hawk.lds     | 5 ++++-
 board/dvlhost/u-boot.lds                       | 9 +++++++--
 board/freescale/mx31ads/u-boot.lds             | 9 +++++++--
 board/samsung/common/exynos-uboot-spl.lds      | 6 +++++-
 board/ti/am335x/u-boot.lds                     | 9 +++++++--
 board/vpac270/u-boot-spl.lds                   | 9 +++++++--
 26 files changed, 146 insertions(+), 38 deletions(-)

diff --git a/arch/arm/cpu/arm1136/u-boot-spl.lds b/arch/arm/cpu/arm1136/u-boot-spl.lds
index bccde73..0299902 100644
--- a/arch/arm/cpu/arm1136/u-boot-spl.lds
+++ b/arch/arm/cpu/arm1136/u-boot-spl.lds
@@ -33,7 +33,11 @@ SECTIONS
    .data : { *(SORT_BY_ALIGNMENT(.data*)) } >.sram
    . = ALIGN(4);
    __image_copy_end = .;
-	_end = .;
+
+	.end :
+	{
+		*(.__end)
+	}
.bss :
    {
diff --git a/arch/arm/cpu/arm920t/ep93xx/u-boot.lds b/arch/arm/cpu/arm920t/ep93xx/u-boot.lds
index 4bed4fc..9699404 100644
--- a/arch/arm/cpu/arm920t/ep93xx/u-boot.lds
+++ b/arch/arm/cpu/arm920t/ep93xx/u-boot.lds
@@ -50,5 +50,8 @@ SECTIONS
    .bss : { *(.bss*) }
    __bss_end = .;
-	_end = .;
+	.end :
+	{
+		*(.__end)
+	}
 }
diff --git a/arch/arm/cpu/arm926ejs/mxs/u-boot-spl.lds b/arch/arm/cpu/arm926ejs/mxs/u-boot-spl.lds
index 80fb9bd..d0b482d 100644
--- a/arch/arm/cpu/arm926ejs/mxs/u-boot-spl.lds
+++ b/arch/arm/cpu/arm926ejs/mxs/u-boot-spl.lds
@@ -49,9 +49,14 @@ SECTIONS
    	__bss_end = .;
    }
-	_end = .;
+	.end :
+	{
+		*(.__end)
+	}
+
+	_image_binary_end = .;
-	.dynsym _end : { *(.dynsym) }
+	.dynsym _image_binary_end : { *(.dynsym) }
    .dynbss : { *(.dynbss) }
    .dynstr : { *(.dynstr*) }
    .dynamic : { *(.dynamic*) }
diff --git a/arch/arm/cpu/arm926ejs/spear/u-boot-spl.lds b/arch/arm/cpu/arm926ejs/spear/u-boot-spl.lds
index 76b499d..b6d0f65 100644
--- a/arch/arm/cpu/arm926ejs/spear/u-boot-spl.lds
+++ b/arch/arm/cpu/arm926ejs/spear/u-boot-spl.lds
@@ -49,9 +49,14 @@ SECTIONS
    	__bss_end = .;
    }
-	_end = .;
+	.end :
+	{
+		*(.__end)
+	}
+
+	_image_binary_end = .;
-	.dynsym _end : { *(.dynsym) }
+	.dynsym _image_binary_end : { *(.dynsym) }
    .dynbss : { *(.dynbss) }
    .dynstr : { *(.dynstr*) }
    .dynamic : { *(.dynamic*) }
diff --git a/arch/arm/cpu/armv7/am33xx/u-boot-spl.lds b/arch/arm/cpu/armv7/am33xx/u-boot-spl.lds
index 9302856..b1c28c9 100644
--- a/arch/arm/cpu/armv7/am33xx/u-boot-spl.lds
+++ b/arch/arm/cpu/armv7/am33xx/u-boot-spl.lds
@@ -38,7 +38,11 @@ SECTIONS
. = ALIGN(4);
    __image_copy_end = .;
-	_end = .;
+
+	.end :
+	{
+		*(.__end)
+	} >.sram
.bss :
    {
diff --git a/arch/arm/cpu/armv7/omap-common/u-boot-spl.lds b/arch/arm/cpu/armv7/omap-common/u-boot-spl.lds
index 02aa129..745603d 100644
--- a/arch/arm/cpu/armv7/omap-common/u-boot-spl.lds
+++ b/arch/arm/cpu/armv7/omap-common/u-boot-spl.lds
@@ -39,7 +39,11 @@ SECTIONS
. = ALIGN(4);
    __image_copy_end = .;
-	_end = .;
+
+	.end :
+	{
+		*(.__end)
+	}
.bss :
    {
diff --git a/arch/arm/cpu/armv7/socfpga/u-boot-spl.lds b/arch/arm/cpu/armv7/socfpga/u-boot-spl.lds
index a7c9c9d..4282beb 100644
--- a/arch/arm/cpu/armv7/socfpga/u-boot-spl.lds
+++ b/arch/arm/cpu/armv7/socfpga/u-boot-spl.lds
@@ -28,7 +28,11 @@ SECTIONS
. = ALIGN(4);
    __image_copy_end = .;
-	_end = .;
+
+	.end :
+	{
+		*(.__end)
+	}
.bss : {
    	. = ALIGN(4);
diff --git a/arch/arm/cpu/at91-common/u-boot-spl.lds b/arch/arm/cpu/at91-common/u-boot-spl.lds
index 038335d..57ac1eb 100644
--- a/arch/arm/cpu/at91-common/u-boot-spl.lds
+++ b/arch/arm/cpu/at91-common/u-boot-spl.lds
@@ -37,7 +37,11 @@ SECTIONS
. = ALIGN(4);
    __image_copy_end = .;
-	_end = .;
+
+	.end :
+	{
+		*(.__end)
+	} >.sram
.bss :
    {
diff --git a/arch/arm/cpu/ixp/u-boot.lds b/arch/arm/cpu/ixp/u-boot.lds
index 676ae2c..85f8d7a 100644
--- a/arch/arm/cpu/ixp/u-boot.lds
+++ b/arch/arm/cpu/ixp/u-boot.lds
@@ -58,7 +58,12 @@ SECTIONS
    	*(.__rel_dyn_end)
    }
-	_end = .;
+	.end :
+	{
+		*(.__end)
+	}
+
+	_image_binary_end = .;
/*
  * Compiler-generated __bss_start and __bss_end, see arch/arm/lib/bss.c
@@ -79,7 +84,7 @@ SECTIONS
    	KEEP(*(.__bss_end));
    }
-	.dynsym _end : { *(.dynsym) }
+	.dynsym _image_binary_end : { *(.dynsym) }
    .dynbss : { *(.dynbss) }
    .dynstr : { *(.dynstr*) }
    .dynamic : { *(.dynamic*) }
diff --git a/arch/arm/cpu/u-boot-spl.lds b/arch/arm/cpu/u-boot-spl.lds
index 4880d0f..3e88668 100644
--- a/arch/arm/cpu/u-boot-spl.lds
+++ b/arch/arm/cpu/u-boot-spl.lds
@@ -42,7 +42,12 @@ SECTIONS
    	__rel_dyn_end = .;
    }
-	_end = .;
+	.end :
+	{
+		*(.__end)
+	}
+
+	_image_binary_end = .;
.bss __rel_dyn_start (OVERLAY) : {
    	__bss_start = .;
@@ -51,7 +56,7 @@ SECTIONS
    	__bss_end = .;
    }
-	.dynsym _end : { *(.dynsym) }
+	.dynsym _image_binary_end : { *(.dynsym) }
    .dynbss : { *(.dynbss) }
    .dynstr : { *(.dynstr*) }
    .dynamic : { *(.dynamic*) }
diff --git a/arch/arm/cpu/u-boot.lds b/arch/arm/cpu/u-boot.lds
index 9463a33..4f084e7 100644
--- a/arch/arm/cpu/u-boot.lds
+++ b/arch/arm/cpu/u-boot.lds
@@ -60,7 +60,12 @@ SECTIONS
    	*(.__rel_dyn_end)
    }
-	_end = .;
+	.end :
+	{
+		*(.__end)
+	}
+
+	_image_binary_end = .;
/*
     * Deprecated: this MMU section is used by pxa at present but
@@ -91,7 +96,7 @@ SECTIONS
    	KEEP(*(.__bss_end));
    }
-	.dynsym _end : { *(.dynsym) }
+	.dynsym _image_binary_end : { *(.dynsym) }
    .hash : { *(.hash) }
    .got.plt : { *(.got.plt) }
    .dynbss : { *(.dynbss) }
diff --git a/arch/arm/lib/Makefile b/arch/arm/lib/Makefile
index 679f19a..f39d510 100644
--- a/arch/arm/lib/Makefile
+++ b/arch/arm/lib/Makefile
@@ -24,7 +24,6 @@ obj-y += relocate.o
 ifndef CONFIG_SYS_GENERIC_BOARD
 obj-y	+= board.o
 endif
-obj-y += sections.o
obj-$(CONFIG_OF_LIBFDT) += bootm-fdt.o
 obj-$(CONFIG_CMD_BOOTM) += bootm.o
@@ -35,6 +34,7 @@ else
 obj-$(CONFIG_SPL_FRAMEWORK) += spl.o
 endif
+obj-y	+= sections.o
 obj-y	+= interrupts.o
 obj-y	+= reset.o
diff --git a/arch/arm/lib/sections.c b/arch/arm/lib/sections.c
index e35687c..5b30bcb 100644
--- a/arch/arm/lib/sections.c
+++ b/arch/arm/lib/sections.c
@@ -25,3 +25,4 @@ char __image_copy_start[0] __attribute__((section(".__image_copy_start")));
 char __image_copy_end[0] __attribute__((section(".__image_copy_end")));
 char __rel_dyn_start[0] __attribute__((section(".__rel_dyn_start")));
 char __rel_dyn_end[0] __attribute__((section(".__rel_dyn_end")));
+char _end[0] __attribute__((section(".__end")));
diff --git a/board/Barix/ipam390/u-boot-spl-ipam390.lds b/board/Barix/ipam390/u-boot-spl-ipam390.lds
index 5480d1f..8604696 100644
--- a/board/Barix/ipam390/u-boot-spl-ipam390.lds
+++ b/board/Barix/ipam390/u-boot-spl-ipam390.lds
@@ -49,5 +49,9 @@ SECTIONS
    } >.sram
__image_copy_end = .;
-	_end = .;
+
+	.end :
+	{
+		*(.__end)
+	} >.sram
 }
diff --git a/board/actux1/u-boot.lds b/board/actux1/u-boot.lds
index 4716e4f..34cd3a0 100644
--- a/board/actux1/u-boot.lds
+++ b/board/actux1/u-boot.lds
@@ -66,7 +66,12 @@ SECTIONS
    	*(.__rel_dyn_end)
    }
-	_end = .;
+	.end :
+	{
+		*(.__end)
+	}
+
+	_image_binary_end = .;
/*
  * Compiler-generated __bss_start and __bss_end, see arch/arm/lib/bss.c
@@ -87,7 +92,7 @@ SECTIONS
    	KEEP(*(.__bss_end));
    }
-	.dynsym _end : { *(.dynsym) }
+	.dynsym _image_binary_end : { *(.dynsym) }
    .dynbss : { *(.dynbss) }
    .dynstr : { *(.dynstr*) }
    .dynamic : { *(.dynamic*) }
diff --git a/board/actux2/u-boot.lds b/board/actux2/u-boot.lds
index f00d7c7..9b68af1 100644
--- a/board/actux2/u-boot.lds
+++ b/board/actux2/u-boot.lds
@@ -66,7 +66,12 @@ SECTIONS
    	*(.__rel_dyn_end)
    }
-	_end = .;
+	.end :
+	{
+		*(.__end)
+	}
+
+	_image_binary_end = .;
/*
  * Compiler-generated __bss_start and __bss_end, see arch/arm/lib/bss.c
@@ -87,7 +92,7 @@ SECTIONS
    	KEEP(*(.__bss_end));
    }
-	.dynsym _end : { *(.dynsym) }
+	.dynsym _image_binary_end : { *(.dynsym) }
    .dynbss : { *(.dynbss) }
    .dynstr : { *(.dynstr*) }
    .dynamic : { *(.dynamic*) }
diff --git a/board/actux3/u-boot.lds b/board/actux3/u-boot.lds
index 2de3ca6..9d2febc 100644
--- a/board/actux3/u-boot.lds
+++ b/board/actux3/u-boot.lds
@@ -66,7 +66,12 @@ SECTIONS
    	*(.__rel_dyn_end)
    }
-	_end = .;
+	.end :
+	{
+		*(.__end)
+	}
+
+	_image_binary_end = .;
/*
  * Compiler-generated __bss_start and __bss_end, see arch/arm/lib/bss.c
@@ -87,7 +92,7 @@ SECTIONS
    	KEEP(*(.__bss_end));
    }
-	.dynsym _end : { *(.dynsym) }
+	.dynsym _image_binary_end : { *(.dynsym) }
    .dynbss : { *(.dynbss) }
    .dynstr : { *(.dynstr*) }
    .dynamic : { *(.dynamic*) }
diff --git a/board/ait/cam_enc_4xx/u-boot-spl.lds b/board/ait/cam_enc_4xx/u-boot-spl.lds
index fdfbfc3..c0d09ad 100644
--- a/board/ait/cam_enc_4xx/u-boot-spl.lds
+++ b/board/ait/cam_enc_4xx/u-boot-spl.lds
@@ -48,5 +48,9 @@ SECTIONS
    } >.sram
__image_copy_end = .;
-	_end = .;
+
+	.end :
+	{
+		*(.__end)
+	}
 }
diff --git a/board/compulab/cm_t335/u-boot.lds b/board/compulab/cm_t335/u-boot.lds
index d25c19a..0984dfe 100644
--- a/board/compulab/cm_t335/u-boot.lds
+++ b/board/compulab/cm_t335/u-boot.lds
@@ -61,7 +61,12 @@ SECTIONS
    	*(.__rel_dyn_end)
    }
-	_end = .;
+	.end :
+	{
+		*(.__end)
+	}
+
+	_image_binary_end = .;
/*
     * Deprecated: this MMU section is used by pxa at present but
@@ -92,7 +97,7 @@ SECTIONS
    	KEEP(*(.__bss_end));
    }
-	.dynsym _end : { *(.dynsym) }
+	.dynsym _image_binary_end : { *(.dynsym) }
    .hash : { *(.hash) }
    .got.plt : { *(.got.plt) }
    .dynbss : { *(.dynbss) }
diff --git a/board/davinci/da8xxevm/u-boot-spl-da850evm.lds b/board/davinci/da8xxevm/u-boot-spl-da850evm.lds
index 5480d1f..de21a13 100644
--- a/board/davinci/da8xxevm/u-boot-spl-da850evm.lds
+++ b/board/davinci/da8xxevm/u-boot-spl-da850evm.lds
@@ -49,5 +49,9 @@ SECTIONS
    } >.sram
__image_copy_end = .;
-	_end = .;
+
+	.end :
+	{
+		*(.__end)
+	}
 }
diff --git a/board/davinci/da8xxevm/u-boot-spl-hawk.lds b/board/davinci/da8xxevm/u-boot-spl-hawk.lds
index d49c314..299226b 100644
--- a/board/davinci/da8xxevm/u-boot-spl-hawk.lds
+++ b/board/davinci/da8xxevm/u-boot-spl-hawk.lds
@@ -61,5 +61,8 @@ SECTIONS
    	__bss_end = .;
    }
-	_end = .;
+	.end :
+	{
+		*(.__end)
+	}
 }
diff --git a/board/dvlhost/u-boot.lds b/board/dvlhost/u-boot.lds
index ebcaf44..0744fee 100644
--- a/board/dvlhost/u-boot.lds
+++ b/board/dvlhost/u-boot.lds
@@ -66,7 +66,12 @@ SECTIONS
    	*(.__rel_dyn_end)
    }
-	_end = .;
+	.end :
+	{
+		*(.__end)
+	}
+
+	_image_binary_end = .;
/*
  * Compiler-generated __bss_start and __bss_end, see arch/arm/lib/bss.c
@@ -87,7 +92,7 @@ SECTIONS
    	KEEP(*(.__bss_end));
    }
-	.dynsym _end : { *(.dynsym) }
+	.dynsym _image_binary_end : { *(.dynsym) }
    .dynbss : { *(.dynbss) }
    .dynstr : { *(.dynstr*) }
    .dynamic : { *(.dynamic*) }
diff --git a/board/freescale/mx31ads/u-boot.lds b/board/freescale/mx31ads/u-boot.lds
index 1cca176..6da1d4b 100644
--- a/board/freescale/mx31ads/u-boot.lds
+++ b/board/freescale/mx31ads/u-boot.lds
@@ -69,7 +69,12 @@ SECTIONS
    	*(.__rel_dyn_end)
    }
-	_end = .;
+	.end :
+	{
+		*(.__end)
+	}
+
+	_image_binary_end = .;
/*
  * Compiler-generated __bss_start and __bss_end, see arch/arm/lib/bss.c
@@ -90,7 +95,7 @@ SECTIONS
    	KEEP(*(.__bss_end));
    }
-	.dynsym _end : { *(.dynsym) }
+	.dynsym _image_binary_end : { *(.dynsym) }
    .dynbss : { *(.dynbss) }
    .dynstr : { *(.dynstr*) }
    .dynamic : { *(.dynamic*) }
diff --git a/board/samsung/common/exynos-uboot-spl.lds b/board/samsung/common/exynos-uboot-spl.lds
index 8e3b73e..b22f9e0 100644
--- a/board/samsung/common/exynos-uboot-spl.lds
+++ b/board/samsung/common/exynos-uboot-spl.lds
@@ -42,7 +42,11 @@ SECTIONS
    . = ALIGN(4);
__image_copy_end = .;
-	_end = .;
+
+	.end :
+	{
+		*(.__end)
+	} >.sram
.bss :
    {
diff --git a/board/ti/am335x/u-boot.lds b/board/ti/am335x/u-boot.lds
index 6a734b3..ceb2022 100644
--- a/board/ti/am335x/u-boot.lds
+++ b/board/ti/am335x/u-boot.lds
@@ -77,7 +77,12 @@ SECTIONS
    	*(.__rel_dyn_end)
    }
-	_end = .;
+	.end :
+	{
+		*(.__end)
+	}
+
+	_image_binary_end = .;
/*
     * Deprecated: this MMU section is used by pxa at present but
@@ -108,7 +113,7 @@ SECTIONS
    	KEEP(*(.__bss_end));
    }
-	.dynsym _end : { *(.dynsym) }
+	.dynsym _image_binary_end : { *(.dynsym) }
    .dynbss : { *(.dynbss) }
    .dynstr : { *(.dynstr*) }
    .dynamic : { *(.dynamic*) }
diff --git a/board/vpac270/u-boot-spl.lds b/board/vpac270/u-boot-spl.lds
index 02d107c..318f1ee 100644
--- a/board/vpac270/u-boot-spl.lds
+++ b/board/vpac270/u-boot-spl.lds
@@ -53,7 +53,12 @@ SECTIONS
. = ALIGN(0x800);
-	_end = .;
+	.end :
+	{
+		*(.__end)
+	}
+
+	_image_binary_end = .;
.bss __rel_dyn_start (OVERLAY) : {
    	__bss_start = .;
@@ -62,7 +67,7 @@ SECTIONS
    	__bss_end = .;
    }
-	.dynsym _end : { *(.dynsym) }
+	.dynsym _image_binary_end : { *(.dynsym) }
    .dynbss : { *(.dynbss) }
    .dynstr : { *(.dynstr*) }
    .dynamic : { *(.dynamic*) }
-- 
1.8.3.2


    