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| author |   Christophe Leroy <christophe.leroy@csgroup.eu> | 2021-03-09 06:19:30 +0000 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2021-03-14 20:32:23 +1100 |
| commit | 08c18b63d9656e0389087d1956d2b37fd7019172 (patch) | |
| tree | c2eac6c9b7e7022ff8e8a3fdbaa5cad2f2032283 /arch | |
| parent | powerpc/traps: unrecoverable_exception() is not an interrupt handler (diff) | |
| download | linux-dev-08c18b63d9656e0389087d1956d2b37fd7019172.tar.xz linux-dev-08c18b63d9656e0389087d1956d2b37fd7019172.zip | |
powerpc/vdso32: Add missing _restgpr_31_x to fix build failure
With some defconfig including CONFIG_CC_OPTIMIZE_FOR_SIZE,
(for instance mvme5100_defconfig and ps3_defconfig), gcc 5
generates a call to _restgpr_31_x.
Until recently it went unnoticed, but
commit 42ed6d56ade2 ("powerpc/vdso: Block R_PPC_REL24 relocations")
made it rise to the surface.
Provide that function (copied from lib/crtsavres.S) in
gettimeofday.S
Fixes: ab037dd87a2f ("powerpc/vdso: Switch VDSO to generic C implementation.")
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/a7aa198a88bcd33c6e35e99f70f86c7b7f2f9440.1615270757.git.christophe.leroy@csgroup.eu
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/kernel/vdso32/gettimeofday.S | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/vdso32/gettimeofday.S b/arch/powerpc/kernel/vdso32/gettimeofday.S index a6e29f880e0e..d21d08140a5e 100644 --- a/arch/powerpc/kernel/vdso32/gettimeofday.S +++ b/arch/powerpc/kernel/vdso32/gettimeofday.S @@ -65,3 +65,14 @@ V_FUNCTION_END(__kernel_clock_getres) V_FUNCTION_BEGIN(__kernel_time) cvdso_call_time __c_kernel_time V_FUNCTION_END(__kernel_time) + +/* Routines for restoring 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 restore area. */ +_GLOBAL(_restgpr_31_x) +_GLOBAL(_rest32gpr_31_x) + lwz r0,4(r11) + lwz r31,-4(r11) + mtlr r0 + mr r1,r11 + blr |