[PATCH] powerpc: put the gpr sabe/restore functions in their own section
From: Stephen Rothwell <hidden>
Date: 2012-07-06 07:09:46
Subsystem:
linux for powerpc (32-bit and 64-bit), the rest · Maintainers:
Madhavan Srinivasan, Linus Torvalds
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 <redacted> --- arch/powerpc/lib/crtsavres.S | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/arch/powerpc/lib/crtsavres.S b/arch/powerpc/lib/crtsavres.S
index 1c893f0..b2c68ce 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)
--
1.7.10.280.gaa39
--
Cheers,
Stephen Rothwell sfr@canb.auug.org.auAttachments
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