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-rw-r--r--arch/tile/kernel/vdso/Makefile117
-rw-r--r--arch/tile/kernel/vdso/vdso.S28
-rw-r--r--arch/tile/kernel/vdso/vdso.lds.S89
-rw-r--r--arch/tile/kernel/vdso/vdso32.S28
-rw-r--r--arch/tile/kernel/vdso/vgettimeofday.c198
-rw-r--r--arch/tile/kernel/vdso/vrt_sigreturn.S30
6 files changed, 0 insertions, 490 deletions
diff --git a/arch/tile/kernel/vdso/Makefile b/arch/tile/kernel/vdso/Makefile
deleted file mode 100644
index b596a7396382..000000000000
--- a/arch/tile/kernel/vdso/Makefile
+++ /dev/null
@@ -1,117 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-# Symbols present in the vdso
-vdso-syms = rt_sigreturn gettimeofday
-
-# Files to link into the vdso
-obj-vdso = $(patsubst %, v%.o, $(vdso-syms))
-
-# Build rules
-targets := $(obj-vdso) vdso.so vdso.so.dbg vdso.lds vdso-dummy.o
-obj-vdso := $(addprefix $(obj)/, $(obj-vdso))
-
-# vdso32 is only for tilegx -m32 compat task.
-VDSO32-$(CONFIG_COMPAT) := y
-
-obj-y += vdso.o vdso-syms.o
-obj-$(VDSO32-y) += vdso32.o
-CPPFLAGS_vdso.lds += -P -C -U$(ARCH)
-
-# vDSO code runs in userspace and -pg doesn't help with profiling anyway.
-CFLAGS_REMOVE_vdso.o = -pg
-CFLAGS_REMOVE_vdso32.o = -pg
-CFLAGS_REMOVE_vrt_sigreturn.o = -pg
-CFLAGS_REMOVE_vrt_sigreturn32.o = -pg
-CFLAGS_REMOVE_vgettimeofday.o = -pg
-CFLAGS_REMOVE_vgettimeofday32.o = -pg
-
-ifdef CONFIG_FEEDBACK_COLLECT
-# vDSO code runs in userspace, not collecting feedback data.
-CFLAGS_REMOVE_vdso.o = -ffeedback-generate
-CFLAGS_REMOVE_vdso32.o = -ffeedback-generate
-CFLAGS_REMOVE_vrt_sigreturn.o = -ffeedback-generate
-CFLAGS_REMOVE_vrt_sigreturn32.o = -ffeedback-generate
-CFLAGS_REMOVE_vgettimeofday.o = -ffeedback-generate
-CFLAGS_REMOVE_vgettimeofday32.o = -ffeedback-generate
-endif
-
-# Disable gcov profiling for VDSO code
-GCOV_PROFILE := n
-
-# Force dependency
-$(obj)/vdso.o: $(obj)/vdso.so
-
-# link rule for the .so file, .lds has to be first
-SYSCFLAGS_vdso.so.dbg = $(c_flags)
-$(obj)/vdso.so.dbg: $(src)/vdso.lds $(obj-vdso) FORCE
- $(call if_changed,vdsold)
-
-# We also create a special relocatable object that should mirror the symbol
-# table and layout of the linked DSO. With ld -R we can then refer to
-# these symbols in the kernel code rather than hand-coded addresses.
-
-SYSCFLAGS_vdso.so.dbg = -shared -s -Wl,-soname=linux-vdso.so.1 \
- $(call cc-ldoption, -Wl$(comma)--hash-style=both)
-SYSCFLAGS_vdso_dummy.o = -r
-$(obj)/vdso-dummy.o: $(src)/vdso.lds $(obj)/vrt_sigreturn.o FORCE
- $(call if_changed,vdsold)
-
-LDFLAGS_vdso-syms.o := -r -R
-$(obj)/vdso-syms.o: $(obj)/vdso-dummy.o FORCE
- $(call if_changed,ld)
-
-# strip rule for the .so file
-$(obj)/%.so: OBJCOPYFLAGS := -S
-$(obj)/%.so: $(obj)/%.so.dbg FORCE
- $(call if_changed,objcopy)
-
-# actual build commands
-# The DSO images are built using a special linker script
-# Add -lgcc so tilepro gets static muldi3 and lshrdi3 definitions.
-# Make sure only to export the intended __vdso_xxx symbol offsets.
-quiet_cmd_vdsold = VDSOLD $@
- cmd_vdsold = $(CC) $(KCFLAGS) -nostdlib $(SYSCFLAGS_$(@F)) \
- -Wl,-T,$(filter-out FORCE,$^) -o $@.tmp -lgcc && \
- $(CROSS_COMPILE)objcopy \
- $(patsubst %, -G __vdso_%, $(vdso-syms)) $@.tmp $@
-
-# install commands for the unstripped file
-quiet_cmd_vdso_install = INSTALL $@
- cmd_vdso_install = cp $(obj)/$@.dbg $(MODLIB)/vdso/$@
-
-vdso.so: $(obj)/vdso.so.dbg
- @mkdir -p $(MODLIB)/vdso
- $(call cmd,vdso_install)
-
-vdso32.so: $(obj)/vdso32.so.dbg
- $(call cmd,vdso_install)
-
-vdso_install: vdso.so
-vdso32_install: vdso32.so
-
-
-KBUILD_AFLAGS_32 := $(filter-out -m64,$(KBUILD_AFLAGS))
-KBUILD_AFLAGS_32 += -m32 -s
-KBUILD_CFLAGS_32 := $(filter-out -m64,$(KBUILD_CFLAGS))
-KBUILD_CFLAGS_32 += -m32 -fPIC -shared
-
-obj-vdso32 = $(patsubst %, v%32.o, $(vdso-syms))
-
-targets += $(obj-vdso32) vdso32.so vdso32.so.dbg
-obj-vdso32 := $(addprefix $(obj)/, $(obj-vdso32))
-
-$(obj-vdso32:%=%): KBUILD_AFLAGS = $(KBUILD_AFLAGS_32)
-$(obj-vdso32:%=%): KBUILD_CFLAGS = $(KBUILD_CFLAGS_32)
-
-$(obj)/vgettimeofday32.o: $(obj)/vgettimeofday.c FORCE
- $(call if_changed_rule,cc_o_c)
-
-$(obj)/vrt_sigreturn32.o: $(obj)/vrt_sigreturn.S FORCE
- $(call if_changed,as_o_S)
-
-# Force dependency
-$(obj)/vdso32.o: $(obj)/vdso32.so
-
-SYSCFLAGS_vdso32.so.dbg = -m32 -shared -s -Wl,-soname=linux-vdso32.so.1 \
- $(call cc-ldoption, -Wl$(comma)--hash-style=both)
-$(obj)/vdso32.so.dbg: $(src)/vdso.lds $(obj-vdso32) FORCE
- $(call if_changed,vdsold)
diff --git a/arch/tile/kernel/vdso/vdso.S b/arch/tile/kernel/vdso/vdso.S
deleted file mode 100644
index 3467adb41630..000000000000
--- a/arch/tile/kernel/vdso/vdso.S
+++ /dev/null
@@ -1,28 +0,0 @@
-/*
- * Copyright 2012 Tilera Corporation. All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation, version 2.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
- * NON INFRINGEMENT. See the GNU General Public License for
- * more details.
- */
-
-#include <linux/init.h>
-#include <linux/linkage.h>
-#include <asm/page.h>
-
- __PAGE_ALIGNED_DATA
-
- .global vdso_start, vdso_end
- .align PAGE_SIZE
-vdso_start:
- .incbin "arch/tile/kernel/vdso/vdso.so"
- .align PAGE_SIZE
-vdso_end:
-
- .previous
diff --git a/arch/tile/kernel/vdso/vdso.lds.S b/arch/tile/kernel/vdso/vdso.lds.S
deleted file mode 100644
index 731529f3f06f..000000000000
--- a/arch/tile/kernel/vdso/vdso.lds.S
+++ /dev/null
@@ -1,89 +0,0 @@
-/*
- * Copyright 2012 Tilera Corporation. All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation, version 2.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
- * NON INFRINGEMENT. See the GNU General Public License for
- * more details.
- */
-
-#define VDSO_VERSION_STRING LINUX_2.6
-
-
-OUTPUT_ARCH(tile)
-
-/* The ELF entry point can be used to set the AT_SYSINFO value. */
-ENTRY(__vdso_rt_sigreturn);
-
-
-SECTIONS
-{
- . = SIZEOF_HEADERS;
-
- .hash : { *(.hash) } :text
- .gnu.hash : { *(.gnu.hash) }
- .dynsym : { *(.dynsym) }
- .dynstr : { *(.dynstr) }
- .gnu.version : { *(.gnu.version) }
- .gnu.version_d : { *(.gnu.version_d) }
- .gnu.version_r : { *(.gnu.version_r) }
-
- .note : { *(.note.*) } :text :note
- .dynamic : { *(.dynamic) } :text :dynamic
-
- .eh_frame_hdr : { *(.eh_frame_hdr) } :text :eh_frame_hdr
- .eh_frame : { KEEP (*(.eh_frame)) } :text
-
- .rodata : { *(.rodata .rodata.* .gnu.linkonce.r.*) }
-
- /*
- * This linker script is used both with -r and with -shared.
- * For the layouts to match, we need to skip more than enough
- * space for the dynamic symbol table et al. If this amount
- * is insufficient, ld -shared will barf. Just increase it here.
- */
- . = 0x1000;
- .text : { *(.text .text.*) } :text
-
- .data : {
- *(.got.plt) *(.got)
- *(.data .data.* .gnu.linkonce.d.*)
- *(.dynbss)
- *(.bss .bss.* .gnu.linkonce.b.*)
- }
-}
-
-
-/*
- * We must supply the ELF program headers explicitly to get just one
- * PT_LOAD segment, and set the flags explicitly to make segments read-only.
- */
-PHDRS
-{
- text PT_LOAD FLAGS(5) FILEHDR PHDRS; /* PF_R|PF_X */
- dynamic PT_DYNAMIC FLAGS(4); /* PF_R */
- note PT_NOTE FLAGS(4); /* PF_R */
- eh_frame_hdr PT_GNU_EH_FRAME;
-}
-
-
-/*
- * This controls what userland symbols we export from the vDSO.
- */
-VERSION
-{
- VDSO_VERSION_STRING {
- global:
- __vdso_rt_sigreturn;
- __vdso_gettimeofday;
- gettimeofday;
- __vdso_clock_gettime;
- clock_gettime;
- local:*;
- };
-}
diff --git a/arch/tile/kernel/vdso/vdso32.S b/arch/tile/kernel/vdso/vdso32.S
deleted file mode 100644
index 1d1ac3257e11..000000000000
--- a/arch/tile/kernel/vdso/vdso32.S
+++ /dev/null
@@ -1,28 +0,0 @@
-/*
- * Copyright 2013 Tilera Corporation. All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation, version 2.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
- * NON INFRINGEMENT. See the GNU General Public License for
- * more details.
- */
-
-#include <linux/init.h>
-#include <linux/linkage.h>
-#include <asm/page.h>
-
- __PAGE_ALIGNED_DATA
-
- .global vdso32_start, vdso32_end
- .align PAGE_SIZE
-vdso32_start:
- .incbin "arch/tile/kernel/vdso/vdso32.so"
- .align PAGE_SIZE
-vdso32_end:
-
- .previous
diff --git a/arch/tile/kernel/vdso/vgettimeofday.c b/arch/tile/kernel/vdso/vgettimeofday.c
deleted file mode 100644
index e63310c49742..000000000000
--- a/arch/tile/kernel/vdso/vgettimeofday.c
+++ /dev/null
@@ -1,198 +0,0 @@
-/*
- * Copyright 2012 Tilera Corporation. All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation, version 2.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
- * NON INFRINGEMENT. See the GNU General Public License for
- * more details.
- */
-
-#define VDSO_BUILD /* avoid some shift warnings for -m32 in <asm/page.h> */
-#include <linux/time.h>
-#include <asm/timex.h>
-#include <asm/unistd.h>
-#include <asm/vdso.h>
-
-#if CHIP_HAS_SPLIT_CYCLE()
-static inline cycles_t get_cycles_inline(void)
-{
- unsigned int high = __insn_mfspr(SPR_CYCLE_HIGH);
- unsigned int low = __insn_mfspr(SPR_CYCLE_LOW);
- unsigned int high2 = __insn_mfspr(SPR_CYCLE_HIGH);
-
- while (unlikely(high != high2)) {
- low = __insn_mfspr(SPR_CYCLE_LOW);
- high = high2;
- high2 = __insn_mfspr(SPR_CYCLE_HIGH);
- }
-
- return (((cycles_t)high) << 32) | low;
-}
-#define get_cycles get_cycles_inline
-#endif
-
-struct syscall_return_value {
- long value;
- long error;
-};
-
-/*
- * Find out the vDSO data page address in the process address space.
- */
-inline unsigned long get_datapage(void)
-{
- unsigned long ret;
-
- /* vdso data page located in the 2nd vDSO page. */
- asm volatile ("lnk %0" : "=r"(ret));
- ret &= ~(PAGE_SIZE - 1);
- ret += PAGE_SIZE;
-
- return ret;
-}
-
-static inline u64 vgetsns(struct vdso_data *vdso)
-{
- return ((get_cycles() - vdso->cycle_last) & vdso->mask) * vdso->mult;
-}
-
-static inline int do_realtime(struct vdso_data *vdso, struct timespec *ts)
-{
- unsigned count;
- u64 ns;
-
- do {
- count = raw_read_seqcount_begin(&vdso->tb_seq);
- ts->tv_sec = vdso->wall_time_sec;
- ns = vdso->wall_time_snsec;
- ns += vgetsns(vdso);
- ns >>= vdso->shift;
- } while (unlikely(read_seqcount_retry(&vdso->tb_seq, count)));
-
- ts->tv_sec += __iter_div_u64_rem(ns, NSEC_PER_SEC, &ns);
- ts->tv_nsec = ns;
-
- return 0;
-}
-
-static inline int do_monotonic(struct vdso_data *vdso, struct timespec *ts)
-{
- unsigned count;
- u64 ns;
-
- do {
- count = raw_read_seqcount_begin(&vdso->tb_seq);
- ts->tv_sec = vdso->monotonic_time_sec;
- ns = vdso->monotonic_time_snsec;
- ns += vgetsns(vdso);
- ns >>= vdso->shift;
- } while (unlikely(read_seqcount_retry(&vdso->tb_seq, count)));
-
- ts->tv_sec += __iter_div_u64_rem(ns, NSEC_PER_SEC, &ns);
- ts->tv_nsec = ns;
-
- return 0;
-}
-
-static inline int do_realtime_coarse(struct vdso_data *vdso,
- struct timespec *ts)
-{
- unsigned count;
-
- do {
- count = raw_read_seqcount_begin(&vdso->tb_seq);
- ts->tv_sec = vdso->wall_time_coarse_sec;
- ts->tv_nsec = vdso->wall_time_coarse_nsec;
- } while (unlikely(read_seqcount_retry(&vdso->tb_seq, count)));
-
- return 0;
-}
-
-static inline int do_monotonic_coarse(struct vdso_data *vdso,
- struct timespec *ts)
-{
- unsigned count;
-
- do {
- count = raw_read_seqcount_begin(&vdso->tb_seq);
- ts->tv_sec = vdso->monotonic_time_coarse_sec;
- ts->tv_nsec = vdso->monotonic_time_coarse_nsec;
- } while (unlikely(read_seqcount_retry(&vdso->tb_seq, count)));
-
- return 0;
-}
-
-struct syscall_return_value __vdso_gettimeofday(struct timeval *tv,
- struct timezone *tz)
-{
- struct syscall_return_value ret = { 0, 0 };
- unsigned count;
- struct vdso_data *vdso = (struct vdso_data *)get_datapage();
-
- /* The use of the timezone is obsolete, normally tz is NULL. */
- if (unlikely(tz != NULL)) {
- do {
- count = raw_read_seqcount_begin(&vdso->tz_seq);
- tz->tz_minuteswest = vdso->tz_minuteswest;
- tz->tz_dsttime = vdso->tz_dsttime;
- } while (unlikely(read_seqcount_retry(&vdso->tz_seq, count)));
- }
-
- if (unlikely(tv == NULL))
- return ret;
-
- do_realtime(vdso, (struct timespec *)tv);
- tv->tv_usec /= 1000;
-
- return ret;
-}
-
-int gettimeofday(struct timeval *tv, struct timezone *tz)
- __attribute__((weak, alias("__vdso_gettimeofday")));
-
-static struct syscall_return_value vdso_fallback_gettime(long clock,
- struct timespec *ts)
-{
- struct syscall_return_value ret;
- __asm__ __volatile__ (
- "swint1"
- : "=R00" (ret.value), "=R01" (ret.error)
- : "R10" (__NR_clock_gettime), "R00" (clock), "R01" (ts)
- : "r2", "r3", "r4", "r5", "r6", "r7",
- "r8", "r9", "r11", "r12", "r13", "r14", "r15",
- "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23",
- "r24", "r25", "r26", "r27", "r28", "r29", "memory");
- return ret;
-}
-
-struct syscall_return_value __vdso_clock_gettime(clockid_t clock,
- struct timespec *ts)
-{
- struct vdso_data *vdso = (struct vdso_data *)get_datapage();
- struct syscall_return_value ret = { 0, 0 };
-
- switch (clock) {
- case CLOCK_REALTIME:
- do_realtime(vdso, ts);
- return ret;
- case CLOCK_MONOTONIC:
- do_monotonic(vdso, ts);
- return ret;
- case CLOCK_REALTIME_COARSE:
- do_realtime_coarse(vdso, ts);
- return ret;
- case CLOCK_MONOTONIC_COARSE:
- do_monotonic_coarse(vdso, ts);
- return ret;
- default:
- return vdso_fallback_gettime(clock, ts);
- }
-}
-
-int clock_gettime(clockid_t clock, struct timespec *ts)
- __attribute__((weak, alias("__vdso_clock_gettime")));
diff --git a/arch/tile/kernel/vdso/vrt_sigreturn.S b/arch/tile/kernel/vdso/vrt_sigreturn.S
deleted file mode 100644
index 6326caf4a039..000000000000
--- a/arch/tile/kernel/vdso/vrt_sigreturn.S
+++ /dev/null
@@ -1,30 +0,0 @@
-/*
- * Copyright 2012 Tilera Corporation. All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation, version 2.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
- * NON INFRINGEMENT. See the GNU General Public License for
- * more details.
- */
-
-#include <linux/linkage.h>
-#include <arch/abi.h>
-#include <asm/unistd.h>
-
-/*
- * Note that libc has a copy of this function that it uses to compare
- * against the PC when a stack backtrace ends, so if this code is
- * changed, the libc implementation(s) should also be updated.
- */
-ENTRY(__vdso_rt_sigreturn)
- moveli TREG_SYSCALL_NR_NAME, __NR_rt_sigreturn
- swint1
- /* We don't use ENDPROC to avoid tagging this symbol as FUNC,
- * which confuses the perf tool.
- */
- END(__vdso_rt_sigreturn)
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