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[PATCH] powerpc: Eliminate "exceeds stub group size" linker warning

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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: Paul Mackerras <paulus@samba.org>
[ Yee-haa. Maybe I'll notice newly introduced real warnings now - Linus ]
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Paul Mackerras 2006-11-02 09:44:37 +11:00 committed by Linus Torvalds
parent dd472546ed
commit 3ccfc65c50
1 changed files with 15 additions and 12 deletions
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27
arch/powerpc/kernel/head_64.S
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@ -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,