From: Stephen Rothwell <sfr@canb.auug.org.au>
Date: Thu, 5 Jul 2012 21:09:40 +0000 (+0000)
Subject: powerpc: Put the gpr save/restore functions in their own section
X-Git-Tag: next-20120724~105^2~12
X-Git-Url: https://git.kernelconcepts.de/?p=karo-tx-linux.git;a=commitdiff_plain;h=1d5a436d2ce9d1b65c905f69a33e78d69245993e

powerpc: Put the gpr save/restore functions in their own section

This allows the linker to know that calls to them do not need to switch
TOC and stop errors like the following when linking large configurations:

powerpc64-linux-ld: drivers/built-in.o: In function `.gpiochip_is_requested':
(.text+0x4): sibling call optimization to `_savegpr0_29' does not allow automatic multiple TOCs; recompile with -mminimal-toc or -fno-optimize-sibling-calls, or make `_savegpr0_29' extern

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---

diff --git a/arch/powerpc/lib/crtsavres.S b/arch/powerpc/lib/crtsavres.S
index 1c893f05d224..b2c68ce139ae 100644
--- a/arch/powerpc/lib/crtsavres.S
+++ b/arch/powerpc/lib/crtsavres.S
@@ -41,12 +41,13 @@
 #include <asm/ppc_asm.h>
 
 	.file	"crtsavres.S"
-	.section ".text"
 
 #ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
 
 #ifndef CONFIG_PPC64
 
+	.section ".text"
+
 /* Routines for saving integer registers, called by the compiler.  */
 /* Called with r11 pointing to the stack header word of the caller of the */
 /* function, just beyond the end of the integer save area.  */
@@ -232,6 +233,8 @@ _GLOBAL(_rest32gpr_31_x)
 
 #else /* CONFIG_PPC64 */
 
+	.section ".text.save.restore","ax",@progbits
+
 .globl	_savegpr0_14
 _savegpr0_14:
 	std	r14,-144(r1)