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Commit 3ccfc65c authored by Paul Mackerras's avatar Paul Mackerras Committed by Linus Torvalds
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[PATCH] powerpc: Eliminate "exceeds stub group size" linker warning 



It turns out that the linker warnings on 64-bit powerpc about "section
blah exceeds stub group size" were being triggered by conditional
branches in head_64.S branching to global symbols, whether in
head_64.S or in other files.  This eliminates the warnings by making
some global symbols in head_64.S no longer global, and by rearranging
some branches.

Signed-off-by: default avatarPaul Mackerras <paulus@samba.org>
[ Yee-haa. Maybe I'll notice newly introduced real warnings now - Linus ]
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent dd472546

arch/powerpc/kernel/head_64.S

+15 −12
Original line number Diff line number Diff line
@@ -487,7 +487,7 @@ BEGIN_FTR_SECTION 
	rlwimi	r13,r12,16,0x20

	mfcr	r12

	cmpwi	r13,0x2c

	beq	.do_stab_bolted_pSeries

	beq	do_stab_bolted_pSeries

	mtcrf	0x80,r12

	mfspr	r12,SPRN_SPRG2

END_FTR_SECTION_IFCLR(CPU_FTR_SLB)
@@ -600,7 +600,7 @@ system_call_pSeries: 
	STD_EXCEPTION_PSERIES(., performance_monitor)



	.align	7

_GLOBAL(do_stab_bolted_pSeries)

do_stab_bolted_pSeries:

	mtcrf	0x80,r12

	mfspr	r12,SPRN_SPRG2

	EXCEPTION_PROLOG_PSERIES(PACA_EXSLB, .do_stab_bolted)
@@ -1046,7 +1046,7 @@ slb_miss_fault: 
	li	r5,0

	std	r4,_DAR(r1)

	std	r5,_DSISR(r1)

	b	.handle_page_fault

	b	handle_page_fault



unrecov_user_slb:

	EXCEPTION_PROLOG_COMMON(0x4200, PACA_EXGEN)
@@ -1174,12 +1174,13 @@ program_check_common: 
	.globl fp_unavailable_common

fp_unavailable_common:

	EXCEPTION_PROLOG_COMMON(0x800, PACA_EXGEN)

	bne	.load_up_fpu		/* if from user, just load it up */

	bne	1f			/* if from user, just load it up */

	bl	.save_nvgprs

	addi	r3,r1,STACK_FRAME_OVERHEAD

	ENABLE_INTS

	bl	.kernel_fp_unavailable_exception

	BUG_OPCODE

1:	b	.load_up_fpu



	.align	7

	.globl altivec_unavailable_common
@@ -1279,10 +1280,10 @@ _GLOBAL(do_hash_page) 
	std	r4,_DSISR(r1)



	andis.	r0,r4,0xa450		/* weird error? */

	bne-	.handle_page_fault	/* if not, try to insert a HPTE */

	bne-	handle_page_fault	/* if not, try to insert a HPTE */

BEGIN_FTR_SECTION

	andis.	r0,r4,0x0020		/* Is it a segment table fault? */

	bne-	.do_ste_alloc		/* If so handle it */

	bne-	do_ste_alloc		/* If so handle it */

END_FTR_SECTION_IFCLR(CPU_FTR_SLB)



	/*
@@ -1324,7 +1325,7 @@ BEGIN_FW_FTR_SECTION 
	 * because ret_from_except_lite will check for and handle pending

	 * interrupts if necessary.

	 */

	beq	.ret_from_except_lite

	beq	13f

	/* For a hash failure, we don't bother re-enabling interrupts */

	ble-	12f
@@ -1346,14 +1347,14 @@ BEGIN_FW_FTR_SECTION 
END_FW_FTR_SECTION_IFCLR(FW_FEATURE_ISERIES)



/* Here we have a page fault that hash_page can't handle. */

_GLOBAL(handle_page_fault)

handle_page_fault:

	ENABLE_INTS

11:	ld	r4,_DAR(r1)

	ld	r5,_DSISR(r1)

	addi	r3,r1,STACK_FRAME_OVERHEAD

	bl	.do_page_fault

	cmpdi	r3,0

	beq+	.ret_from_except_lite

	beq+	13f

	bl	.save_nvgprs

	mr	r5,r3

	addi	r3,r1,STACK_FRAME_OVERHEAD
@@ -1370,12 +1371,14 @@ _GLOBAL(handle_page_fault) 
	bl	.low_hash_fault

	b	.ret_from_except



13:	b	.ret_from_except_lite



	/* here we have a segment miss */

_GLOBAL(do_ste_alloc)

do_ste_alloc:

	bl	.ste_allocate		/* try to insert stab entry */

	cmpdi	r3,0

	beq+	fast_exception_return

	b	.handle_page_fault

	bne-	handle_page_fault

	b	fast_exception_return



/*

 * r13 points to the PACA, r9 contains the saved CR,