Merge patch series "Various toolchain compatibility fixes/improvements"

Sam Edwards <cfsworks@gmail.com> says:

This is v2 of my "misc. fixes" series, sent to prepare the codebase for more
direct LLVM support in the near future. This series contains several fixes that
I found in the process of preparing that support and which address issues
independent of any future feature or enhancement. I am sending these now, both
so that their inclusion is not delayed by discussion on my upcoming series and
to make the latter more manageable.

Link: https://lore.kernel.org/r/20250315221813.1265193-1-CFSworks@gmail.com

3 files changed, 20 insertions, 1 deletions

diff --git a/arch/arm/lib/Makefile b/arch/arm/lib/Makefile
index 1c95dd6fed2..74cd5051552 100644
--- a/arch/arm/lib/Makefile
+++ b/arch/arm/lib/Makefile
@@ -92,6 +92,7 @@ obj-$(CONFIG_GENERATE_ACPI_TABLE) += acpi_table.o
 # For EABI conformant tool chains, provide eabi_compat()
 ifneq (,$(findstring -mabi=aapcs-linux,$(PLATFORM_CPPFLAGS)))
 extra-y	+= eabi_compat.o
+CFLAGS_REMOVE_eabi_compat.o := $(LTO_CFLAGS)
 endif
 
 # some files can only build in ARM or THUMB2, not THUMB1
diff --git a/arch/arm/lib/crt0_arm_efi.S b/arch/arm/lib/crt0_arm_efi.S
index 1e7de5c3343..593ee1e194a 100644
--- a/arch/arm/lib/crt0_arm_efi.S
+++ b/arch/arm/lib/crt0_arm_efi.S
@@ -150,7 +150,8 @@ _start:
 	adr		r1, .L_DYNAMIC
 	ldr		r0, [r1]
 	add		r1, r0, r1
-	adrl		r0, image_base
+	sub		r0, pc, #((.+8-image_base) & 0xff)
+	sub		r0, r0, #((.+4-image_base) & 0xff00)
 	bl		_relocate
 	teq		r0, #0
 	bne		0f
diff --git a/arch/arm/lib/eabi_compat.c b/arch/arm/lib/eabi_compat.c
index 602efe04c04..e6cafcc5f2b 100644
--- a/arch/arm/lib/eabi_compat.c
+++ b/arch/arm/lib/eabi_compat.c
@@ -33,7 +33,24 @@ void __aeabi_memcpy(void *dest, const void *src, size_t n)
 	(void) memcpy(dest, src, n);
 }
 
+void __aeabi_memcpy4(void *dest, const void *src, size_t n) __alias(__aeabi_memcpy);
+
+void __aeabi_memcpy8(void *dest, const void *src, size_t n) __alias(__aeabi_memcpy);
+
 void __aeabi_memset(void *dest, size_t n, int c)
 {
 	(void) memset(dest, c, n);
 }
+
+void __aeabi_memset4(void *dest, size_t n, int c) __alias(__aeabi_memset);
+
+void __aeabi_memset8(void *dest, size_t n, int c) __alias(__aeabi_memset);
+
+void __aeabi_memclr(void *dest, size_t n)
+{
+	(void) memset(dest, 0, n);
+}
+
+void __aeabi_memclr4(void *dest, size_t n) __alias(__aeabi_memclr);
+
+void __aeabi_memclr8(void *dest, size_t n) __alias(__aeabi_memclr);