arm: make _end compiler-generated

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>

arm: make _end compiler-generated
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>
Albert ARIBAUD
1 parent 62bbc2f25a
Showing 22 changed files with 117 additions and 29 deletions Side-by-side Diff
arch/arm/cpu/arm1136/u-boot-spl.lds
arch/arm/cpu/arm920t/ep93xx/u-boot.lds
arch/arm/cpu/arm926ejs/mxs/u-boot-spl.lds
arch/arm/cpu/arm926ejs/spear/u-boot-spl.lds
arch/arm/cpu/armv7/am33xx/u-boot-spl.lds
arch/arm/cpu/armv7/omap-common/u-boot-spl.lds
arch/arm/cpu/armv7/socfpga/u-boot-spl.lds
arch/arm/cpu/armv7/zynq/u-boot.lds
arch/arm/cpu/at91-common/u-boot-spl.lds
arch/arm/cpu/u-boot-spl.lds
arch/arm/cpu/u-boot.lds
arch/arm/lib/Makefile
arch/arm/lib/sections.c
board/Barix/ipam390/u-boot-spl-ipam390.lds
board/ait/cam_enc_4xx/u-boot-spl.lds
board/compulab/cm_t335/u-boot.lds
board/davinci/da8xxevm/u-boot-spl-da850evm.lds
board/davinci/da8xxevm/u-boot-spl-hawk.lds
board/freescale/mx31ads/u-boot.lds
board/samsung/common/exynos-uboot-spl.lds
@@ -33,7 +33,11 @@
 	.data : { *(SORT_BY_ALIGNMENT(.data*)) } >.sram
 	. = ALIGN(4);
 	__image_copy_end = .;
-	_end = .;
+
+	.end :
+	{
+		*(.__end)
+	}
  
 	.bss :
 	{
@@ -50,6 +50,9 @@
 	.bss : { *(.bss*) }
 	__bss_end = .;
  
-	_end = .;
+	.end :
+	{
+		*(.__end)
+	}
 }
@@ -49,9 +49,14 @@
 		__bss_end = .;
 	}
  
-	_end = .;
+	.end :
+	{
+		*(.__end)
+	}
  
-	.dynsym _end : { *(.dynsym) }
+	_image_binary_end = .;
+
+	.dynsym _image_binary_end : { *(.dynsym) }
 	.dynbss : { *(.dynbss) }
 	.dynstr : { *(.dynstr*) }
 	.dynamic : { *(.dynamic*) }
@@ -49,9 +49,14 @@
 		__bss_end = .;
 	}
  
-	_end = .;
+	.end :
+	{
+		*(.__end)
+	}
  
-	.dynsym _end : { *(.dynsym) }
+	_image_binary_end = .;
+
+	.dynsym _image_binary_end : { *(.dynsym) }
 	.dynbss : { *(.dynbss) }
 	.dynstr : { *(.dynstr*) }
 	.dynamic : { *(.dynamic*) }
@@ -38,7 +38,11 @@
  
 	. = ALIGN(4);
 	__image_copy_end = .;
-	_end = .;
+
+	.end :
+	{
+		*(.__end)
+	} >.sram
  
 	.bss :
 	{
@@ -39,7 +39,11 @@
  
 	. = ALIGN(4);
 	__image_copy_end = .;
-	_end = .;
+
+	.end :
+	{
+		*(.__end)
+	}
  
 	.bss :
 	{
@@ -28,7 +28,11 @@
  
 	. = ALIGN(4);
 	__image_copy_end = .;
-	_end = .;
+
+	.end :
+	{
+		*(.__end)
+	}
  
 	.bss : {
 		. = ALIGN(4);
@@ -60,7 +60,12 @@
 		*(.__rel_dyn_end)
 	}
  
-	_end = .;
+	.end :
+	{
+		*(.__end)
+	}
+
+	_image_binary_end = .;
  
 /*
  * Compiler-generated __bss_start and __bss_end, see arch/arm/lib/bss.c
@@ -37,7 +37,11 @@
  
 	. = ALIGN(4);
 	__image_copy_end = .;
-	_end = .;
+
+	.end :
+	{
+		*(.__end)
+	} >.sram
  
 	.bss :
 	{
@@ -42,8 +42,13 @@
 		__rel_dyn_end = .;
 	}
  
-	_end = .;
+	.end :
+	{
+		*(.__end)
+	}
  
+	_image_binary_end = .;
+
 	.bss __rel_dyn_start (OVERLAY) : {
 		__bss_start = .;
 		*(.bss*)
@@ -51,7 +56,7 @@
 		__bss_end = .;
 	}
  
-	.dynsym _end : { *(.dynsym) }
+	.dynsym _image_binary_end : { *(.dynsym) }
 	.dynbss : { *(.dynbss) }
 	.dynstr : { *(.dynstr*) }
 	.dynamic : { *(.dynamic*) }
@@ -60,8 +60,13 @@
 		*(.__rel_dyn_end)
 	}
  
-	_end = .;
+	.end :
+	{
+		*(.__end)
+	}
  
+	_image_binary_end = .;
+
 	/*
 	 * Deprecated: this MMU section is used by pxa at present but
 	 * should not be used by new boards/CPUs.
@@ -91,7 +96,7 @@
 		KEEP(*(.__bss_end));
 	}
  
-	.dynsym _end : { *(.dynsym) }
+	.dynsym _image_binary_end : { *(.dynsym) }
 	.dynbss : { *(.dynbss) }
 	.dynstr : { *(.dynstr*) }
 	.dynamic : { *(.dynamic*) }
@@ -32,7 +32,6 @@
 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
@@ -43,6 +42,7 @@
 obj-$(CONFIG_SPL_FRAMEWORK) += spl.o
 endif
  
+obj-y	+= sections.o
 ifdef CONFIG_ARM64
 obj-y	+= interrupts_64.o
 else
@@ -25,4 +25,5 @@
 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")));
@@ -49,6 +49,10 @@
 	} >.sram
  
 	__image_copy_end = .;
-	_end = .;
+
+	.end :
+	{
+		*(.__end)
+	} >.sram
 }
@@ -48,6 +48,10 @@
 	} >.sram
  
 	__image_copy_end = .;
-	_end = .;
+
+	.end :
+	{
+		*(.__end)
+	}
 }
@@ -61,8 +61,13 @@
 		*(.__rel_dyn_end)
 	}
  
-	_end = .;
+	.end :
+	{
+		*(.__end)
+	}
  
+	_image_binary_end = .;
+
 	/*
 	 * Deprecated: this MMU section is used by pxa at present but
 	 * should not be used by new boards/CPUs.
@@ -92,7 +97,7 @@
 		KEEP(*(.__bss_end));
 	}
  
-	.dynsym _end : { *(.dynsym) }
+	.dynsym _image_binary_end : { *(.dynsym) }
 	.hash : { *(.hash) }
 	.got.plt : { *(.got.plt) }
 	.dynbss : { *(.dynbss) }
@@ -49,6 +49,10 @@
 	} >.sram
  
 	__image_copy_end = .;
-	_end = .;
+
+	.end :
+	{
+		*(.__end)
+	}
 }
@@ -61,6 +61,9 @@
 		__bss_end = .;
 	}
  
-	_end = .;
+	.end :
+	{
+		*(.__end)
+	}
 }
@@ -69,8 +69,13 @@
 		*(.__rel_dyn_end)
 	}
  
-	_end = .;
+	.end :
+	{
+		*(.__end)
+	}
  
+	_image_binary_end = .;
+
 /*
  * Compiler-generated __bss_start and __bss_end, see arch/arm/lib/bss.c
  * __bss_base and __bss_limit are for linker only (overlay ordering)
@@ -90,7 +95,7 @@
 		KEEP(*(.__bss_end));
 	}
  
-	.dynsym _end : { *(.dynsym) }
+	.dynsym _image_binary_end : { *(.dynsym) }
 	.dynbss : { *(.dynbss) }
 	.dynstr : { *(.dynstr*) }
 	.dynamic : { *(.dynamic*) }
@@ -42,7 +42,11 @@
 	. = ALIGN(4);
  
 	__image_copy_end = .;
-	_end = .;
+
+	.end :
+	{
+		*(.__end)
+	} >.sram
  
 	.bss :
 	{
@@ -77,8 +77,13 @@
 		*(.__rel_dyn_end)
 	}
  
-	_end = .;
+	.end :
+	{
+		*(.__end)
+	}
  
+	_image_binary_end = .;
+
 	/*
 	 * Deprecated: this MMU section is used by pxa at present but
 	 * should not be used by new boards/CPUs.
@@ -108,7 +113,7 @@
 		KEEP(*(.__bss_end));
 	}
  
-	.dynsym _end : { *(.dynsym) }
+	.dynsym _image_binary_end : { *(.dynsym) }
 	.dynbss : { *(.dynbss) }
 	.dynstr : { *(.dynstr*) }
 	.dynamic : { *(.dynamic*) }
@@ -54,8 +54,13 @@
  
 	. = ALIGN(0x800);
  
-	_end = .;
+	.end :
+	{
+		*(.__end)
+	}
  
+	_image_binary_end = .;
+
 	.bss __rel_dyn_start (OVERLAY) : {
 		__bss_start = .;
 		*(.bss*)
@@ -63,7 +68,7 @@
 		__bss_end = .;
 	}
  
-	.dynsym _end : { *(.dynsym) }
+	.dynsym _image_binary_end : { *(.dynsym) }
 	.dynbss : { *(.dynbss) }
 	.dynstr : { *(.dynstr*) }
 	.dynamic : { *(.dynamic*) }
...	...	@@ -33,7 +33,11 @@
33	33	.data : { (SORT_BY_ALIGNMENT(.data)) } >.sram
34	34	. = ALIGN(4);
35	35	__image_copy_end = .;
36		- _end = .;
	36	+
	37	+ .end :
	38	+ {
	39	+ *(.__end)
	40	+ }
37	41
38	42	.bss :
39	43	{
...	...	@@ -50,6 +50,9 @@
50	50	.bss : { (.bss) }
51	51	__bss_end = .;
52	52
53		- _end = .;
	53	+ .end :
	54	+ {
	55	+ *(.__end)
	56	+ }
54	57	}
...	...	@@ -49,9 +49,14 @@
49	49	__bss_end = .;
50	50	}
51	51
52		- _end = .;
	52	+ .end :
	53	+ {
	54	+ *(.__end)
	55	+ }
53	56
54		- .dynsym _end : { *(.dynsym) }
	57	+ _image_binary_end = .;
	58	+
	59	+ .dynsym _image_binary_end : { *(.dynsym) }
55	60	.dynbss : { *(.dynbss) }
56	61	.dynstr : { (.dynstr) }
57	62	.dynamic : { (.dynamic) }
...	...	@@ -38,7 +38,11 @@
38	38
39	39	. = ALIGN(4);
40	40	__image_copy_end = .;
41		- _end = .;
	41	+
	42	+ .end :
	43	+ {
	44	+ *(.__end)
	45	+ } >.sram
42	46
43	47	.bss :
44	48	{
...	...	@@ -39,7 +39,11 @@
39	39
40	40	. = ALIGN(4);
41	41	__image_copy_end = .;
42		- _end = .;
	42	+
	43	+ .end :
	44	+ {
	45	+ *(.__end)
	46	+ }
43	47
44	48	.bss :
45	49	{
...	...	@@ -28,7 +28,11 @@
28	28
29	29	. = ALIGN(4);
30	30	__image_copy_end = .;
31		- _end = .;
	31	+
	32	+ .end :
	33	+ {
	34	+ *(.__end)
	35	+ }
32	36
33	37	.bss : {
34	38	. = ALIGN(4);
...	...	@@ -60,7 +60,12 @@
60	60	*(.__rel_dyn_end)
61	61	}
62	62
63		- _end = .;
	63	+ .end :
	64	+ {
	65	+ *(.__end)
	66	+ }
	67	+
	68	+ _image_binary_end = .;
64	69
65	70	/*
66	71	* Compiler-generated __bss_start and __bss_end, see arch/arm/lib/bss.c
...	...	@@ -37,7 +37,11 @@
37	37
38	38	. = ALIGN(4);
39	39	__image_copy_end = .;
40		- _end = .;
	40	+
	41	+ .end :
	42	+ {
	43	+ *(.__end)
	44	+ } >.sram
41	45
42	46	.bss :
43	47	{
...	...	@@ -42,8 +42,13 @@
42	42	__rel_dyn_end = .;
43	43	}
44	44
45		- _end = .;
	45	+ .end :
	46	+ {
	47	+ *(.__end)
	48	+ }
46	49
	50	+ _image_binary_end = .;
	51	+
47	52	.bss __rel_dyn_start (OVERLAY) : {
48	53	__bss_start = .;
49	54	(.bss)
...	...	@@ -51,7 +56,7 @@
51	56	__bss_end = .;
52	57	}
53	58
54		- .dynsym _end : { *(.dynsym) }
	59	+ .dynsym _image_binary_end : { *(.dynsym) }
55	60	.dynbss : { *(.dynbss) }
56	61	.dynstr : { (.dynstr) }
57	62	.dynamic : { (.dynamic) }
...	...	@@ -60,8 +60,13 @@
60	60	*(.__rel_dyn_end)
61	61	}
62	62
63		- _end = .;
	63	+ .end :
	64	+ {
	65	+ *(.__end)
	66	+ }
64	67
	68	+ _image_binary_end = .;
	69	+
65	70	/*
66	71	* Deprecated: this MMU section is used by pxa at present but
67	72	* should not be used by new boards/CPUs.
...	...	@@ -91,7 +96,7 @@
91	96	KEEP(*(.__bss_end));
92	97	}
93	98
94		- .dynsym _end : { *(.dynsym) }
	99	+ .dynsym _image_binary_end : { *(.dynsym) }
95	100	.dynbss : { *(.dynbss) }
96	101	.dynstr : { (.dynstr) }
97	102	.dynamic : { (.dynamic) }