Thread (9 messages) 9 messages, 4 authors, 2022-10-04
STALE1342d LANDED
Revisions (2)
  1. v1 [diff vs current]
  2. v2 current

[PATCH v2 3/5] powerpc/64: switch asm helpers from GOT to TOC relative addressing

From: Nicholas Piggin <npiggin@gmail.com>
Date: 2022-09-26 03:43:33
Subsystem: linux for powerpc (32-bit and 64-bit), the rest · Maintainers: Madhavan Srinivasan, Michael Ellerman, Linus Torvalds

There is no need to use GOT addressing within the kernel.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
---
 arch/powerpc/boot/ppc_asm.h        | 3 ++-
 arch/powerpc/include/asm/ppc_asm.h | 3 ++-
 2 files changed, 4 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc/boot/ppc_asm.h b/arch/powerpc/boot/ppc_asm.h
index 2824a3e32aab..a66cfd76fa4d 100644
--- a/arch/powerpc/boot/ppc_asm.h
+++ b/arch/powerpc/boot/ppc_asm.h
@@ -86,7 +86,8 @@
 
 #ifdef CONFIG_PPC64_BOOT_WRAPPER
 #define LOAD_REG_ADDR(reg,name)			\
-	ld	reg,name@got(r2)
+	addis	reg,r2,name@toc@ha;		\
+	addi	reg,reg,name@toc@l
 #else
 #define LOAD_REG_ADDR(reg,name)			\
 	lis	reg,name@ha;			\
diff --git a/arch/powerpc/include/asm/ppc_asm.h b/arch/powerpc/include/asm/ppc_asm.h
index 83c02f5a7f2a..da570b197e82 100644
--- a/arch/powerpc/include/asm/ppc_asm.h
+++ b/arch/powerpc/include/asm/ppc_asm.h
@@ -315,7 +315,8 @@ GLUE(.,name):
 	rldimi	reg, tmp, 32, 0
 
 #define LOAD_REG_ADDR(reg,name)			\
-	ld	reg,name@got(r2)
+	addis	reg,r2,name@toc@ha;		\
+	addi	reg,reg,name@toc@l
 
 #define LOAD_REG_ADDRBASE(reg,name)	LOAD_REG_ADDR(reg,name)
 #define ADDROFF(name)			0
-- 
2.37.2
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