linux-kernel - [PATCH 4.9 21/24] ARM: use LOADADDR() to get load address of sections

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Date:   Wed,  9 Mar 2022 16:59:34 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Catalin Marinas <catalin.marinas@....com>,
        "Russell King (Oracle)" <rmk+kernel@...linux.org.uk>
Subject: [PATCH 4.9 21/24] ARM: use LOADADDR() to get load address of sections

From: "Russell King (Oracle)" <rmk+kernel@...linux.org.uk>

commit 8d9d651ff2270a632e9dc497b142db31e8911315 upstream.

Use the linker's LOADADDR() macro to get the load address of the
sections, and provide a macro to set the start and end symbols.

Acked-by: Catalin Marinas <catalin.marinas@....com>
Signed-off-by: Russell King (Oracle) <rmk+kernel@...linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 arch/arm/kernel/vmlinux-xip.lds.S |   19 ++++++++++++-------
 arch/arm/kernel/vmlinux.lds.S     |   19 ++++++++++++-------
 2 files changed, 24 insertions(+), 14 deletions(-)

--- a/arch/arm/kernel/vmlinux-xip.lds.S
+++ b/arch/arm/kernel/vmlinux-xip.lds.S
@@ -12,6 +12,11 @@
 #include <asm/memory.h>
 #include <asm/page.h>
 
+/* Set start/end symbol names to the LMA for the section */
+#define ARM_LMA(sym, section)						\
+	sym##_start = LOADADDR(section);				\
+	sym##_end = LOADADDR(section) + SIZEOF(section)
+
 #define PROC_INFO							\
 	. = ALIGN(4);							\
 	VMLINUX_SYMBOL(__proc_info_begin) = .;				\
@@ -148,19 +153,19 @@ SECTIONS
 	 * The vectors and stubs are relocatable code, and the
 	 * only thing that matters is their relative offsets
 	 */
-	__vectors_start = .;
+	__vectors_lma = .;
 	.vectors 0xffff0000 : AT(__vectors_start) {
 		*(.vectors)
 	}
-	. = __vectors_start + SIZEOF(.vectors);
-	__vectors_end = .;
+	ARM_LMA(__vectors, .vectors);
+	. = __vectors_lma + SIZEOF(.vectors);
 
-	__stubs_start = .;
-	.stubs ADDR(.vectors) + 0x1000 : AT(__stubs_start) {
+	__stubs_lma = .;
+	.stubs ADDR(.vectors) + 0x1000 : AT(__stubs_lma) {
 		*(.stubs)
 	}
-	. = __stubs_start + SIZEOF(.stubs);
-	__stubs_end = .;
+	ARM_LMA(__stubs, .stubs);
+	. = __stubs_lma + SIZEOF(.stubs);
 
 	PROVIDE(vector_fiq_offset = vector_fiq - ADDR(.vectors));
 
--- a/arch/arm/kernel/vmlinux.lds.S
+++ b/arch/arm/kernel/vmlinux.lds.S
@@ -14,6 +14,11 @@
 #include <asm/page.h>
 #include <asm/pgtable.h>
 
+/* Set start/end symbol names to the LMA for the section */
+#define ARM_LMA(sym, section)						\
+	sym##_start = LOADADDR(section);				\
+	sym##_end = LOADADDR(section) + SIZEOF(section)
+
 #define PROC_INFO							\
 	. = ALIGN(4);							\
 	VMLINUX_SYMBOL(__proc_info_begin) = .;				\
@@ -169,19 +174,19 @@ SECTIONS
 	 * The vectors and stubs are relocatable code, and the
 	 * only thing that matters is their relative offsets
 	 */
-	__vectors_start = .;
+	__vectors_lma = .;
 	.vectors 0xffff0000 : AT(__vectors_start) {
 		*(.vectors)
 	}
-	. = __vectors_start + SIZEOF(.vectors);
-	__vectors_end = .;
+	ARM_LMA(__vectors, .vectors);
+	. = __vectors_lma + SIZEOF(.vectors);
 
-	__stubs_start = .;
-	.stubs ADDR(.vectors) + 0x1000 : AT(__stubs_start) {
+	__stubs_lma = .;
+	.stubs ADDR(.vectors) + 0x1000 : AT(__stubs_lma) {
 		*(.stubs)
 	}
-	. = __stubs_start + SIZEOF(.stubs);
-	__stubs_end = .;
+	ARM_LMA(__stubs, .stubs);
+	. = __stubs_lma + SIZEOF(.stubs);
 
 	PROVIDE(vector_fiq_offset = vector_fiq - ADDR(.vectors));