08c18b63d9
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 commit42ed6d56ad("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:ab037dd87a("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
78 lines
1.9 KiB
ArmAsm
78 lines
1.9 KiB
ArmAsm
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* Userland implementation of gettimeofday() for 32 bits processes in a
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* ppc64 kernel for use in the vDSO
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*
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* Copyright (C) 2004 Benjamin Herrenschmuidt (benh@kernel.crashing.org,
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* IBM Corp.
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*/
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#include <asm/processor.h>
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#include <asm/ppc_asm.h>
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#include <asm/vdso.h>
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#include <asm/vdso_datapage.h>
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#include <asm/asm-offsets.h>
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#include <asm/unistd.h>
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#include <asm/vdso/gettimeofday.h>
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.text
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/*
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* Exact prototype of gettimeofday
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*
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* int __kernel_gettimeofday(struct timeval *tv, struct timezone *tz);
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*
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*/
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V_FUNCTION_BEGIN(__kernel_gettimeofday)
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cvdso_call __c_kernel_gettimeofday
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V_FUNCTION_END(__kernel_gettimeofday)
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/*
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* Exact prototype of clock_gettime()
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*
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* int __kernel_clock_gettime(clockid_t clock_id, struct timespec *tp);
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*
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*/
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V_FUNCTION_BEGIN(__kernel_clock_gettime)
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cvdso_call __c_kernel_clock_gettime
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V_FUNCTION_END(__kernel_clock_gettime)
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/*
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* Exact prototype of clock_gettime64()
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*
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* int __kernel_clock_gettime64(clockid_t clock_id, struct __timespec64 *ts);
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*
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*/
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V_FUNCTION_BEGIN(__kernel_clock_gettime64)
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cvdso_call __c_kernel_clock_gettime64
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V_FUNCTION_END(__kernel_clock_gettime64)
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/*
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* Exact prototype of clock_getres()
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*
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* int __kernel_clock_getres(clockid_t clock_id, struct timespec *res);
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*
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*/
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V_FUNCTION_BEGIN(__kernel_clock_getres)
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cvdso_call __c_kernel_clock_getres
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V_FUNCTION_END(__kernel_clock_getres)
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/*
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* Exact prototype of time()
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*
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* time_t time(time *t);
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*
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*/
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V_FUNCTION_BEGIN(__kernel_time)
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cvdso_call_time __c_kernel_time
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V_FUNCTION_END(__kernel_time)
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/* Routines for restoring integer registers, called by the compiler. */
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/* Called with r11 pointing to the stack header word of the caller of the */
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/* function, just beyond the end of the integer restore area. */
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_GLOBAL(_restgpr_31_x)
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_GLOBAL(_rest32gpr_31_x)
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lwz r0,4(r11)
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lwz r31,-4(r11)
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mtlr r0
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mr r1,r11
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blr
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