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-rw-r--r--arch/nds32/kernel/vdso/.gitignore1
-rw-r--r--arch/nds32/kernel/vdso/Makefile79
-rw-r--r--arch/nds32/kernel/vdso/datapage.S21
-rwxr-xr-xarch/nds32/kernel/vdso/gen_vdso_offsets.sh15
-rw-r--r--arch/nds32/kernel/vdso/gettimeofday.c269
-rw-r--r--arch/nds32/kernel/vdso/note.S11
-rw-r--r--arch/nds32/kernel/vdso/sigreturn.S19
-rw-r--r--arch/nds32/kernel/vdso/vdso.S18
-rw-r--r--arch/nds32/kernel/vdso/vdso.lds.S75
9 files changed, 0 insertions, 508 deletions
diff --git a/arch/nds32/kernel/vdso/.gitignore b/arch/nds32/kernel/vdso/.gitignore
deleted file mode 100644
index f8b69d84238e..000000000000
--- a/arch/nds32/kernel/vdso/.gitignore
+++ /dev/null
@@ -1 +0,0 @@
-vdso.lds
diff --git a/arch/nds32/kernel/vdso/Makefile b/arch/nds32/kernel/vdso/Makefile
deleted file mode 100644
index 7c3c1ccb196e..000000000000
--- a/arch/nds32/kernel/vdso/Makefile
+++ /dev/null
@@ -1,79 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0-only
-#
-# Building a vDSO image for AArch64.
-#
-# Author: Will Deacon <will.deacon@arm.com>
-# Heavily based on the vDSO Makefiles for other archs.
-#
-
-obj-vdso := note.o datapage.o sigreturn.o gettimeofday.o
-
-# Build rules
-targets := $(obj-vdso) vdso.so vdso.so.dbg
-obj-vdso := $(addprefix $(obj)/, $(obj-vdso))
-
-ccflags-y := -shared -fno-common -fno-builtin -nostdlib -fPIC -Wl,-shared -g \
- -Wl,-soname=linux-vdso.so.1 -Wl,--hash-style=sysv
-
-# Disable gcov profiling for VDSO code
-GCOV_PROFILE := n
-
-
-obj-y += vdso.o
-extra-y += vdso.lds
-CPPFLAGS_vdso.lds += -P -C -U$(ARCH)
-
-# Force dependency
-$(obj)/vdso.o : $(obj)/vdso.so
-
-# Link rule for the .so file, .lds has to be first
-$(obj)/vdso.so.dbg: $(obj)/vdso.lds $(obj-vdso) FORCE
- $(call if_changed,vdsold)
-
-
-# Strip rule for the .so file
-$(obj)/%.so: OBJCOPYFLAGS := -S
-$(obj)/%.so: $(obj)/%.so.dbg FORCE
- $(call if_changed,objcopy)
-
-# Generate VDSO offsets using helper script
-gen-vdsosym := $(srctree)/$(src)/gen_vdso_offsets.sh
-quiet_cmd_vdsosym = VDSOSYM $@
- cmd_vdsosym = $(NM) $< | $(gen-vdsosym) | LC_ALL=C sort > $@
-
-include/generated/vdso-offsets.h: $(obj)/vdso.so.dbg FORCE
- $(call if_changed,vdsosym)
-
-
-
-# Assembly rules for the .S files
-
-sigreturn.o : sigreturn.S
- $(call if_changed_dep,vdsoas)
-
-note.o : note.S
- $(call if_changed_dep,vdsoas)
-
-datapage.o : datapage.S
- $(call if_changed_dep,vdsoas)
-
-gettimeofday.o : gettimeofday.c FORCE
- $(call if_changed_dep,vdsocc)
-
-# Actual build commands
-quiet_cmd_vdsold = VDSOL $@
- cmd_vdsold = $(CC) $(c_flags) -Wl,-n -Wl,-T $(real-prereqs) -o $@
-quiet_cmd_vdsoas = VDSOA $@
- cmd_vdsoas = $(CC) $(a_flags) -c -o $@ $<
-quiet_cmd_vdsocc = VDSOA $@
- cmd_vdsocc = $(CC) $(c_flags) -c -o $@ $<
-
-# 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)
-
-vdso_install: vdso.so
diff --git a/arch/nds32/kernel/vdso/datapage.S b/arch/nds32/kernel/vdso/datapage.S
deleted file mode 100644
index 4a62c3cab1c8..000000000000
--- a/arch/nds32/kernel/vdso/datapage.S
+++ /dev/null
@@ -1,21 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-// Copyright (C) 2005-2017 Andes Technology Corporation
-
-#include <linux/linkage.h>
-#include <asm/page.h>
-
-ENTRY(__get_timerpage)
- sethi $r0, hi20(. + PAGE_SIZE + 8)
- ori $r0, $r0, lo12(. + PAGE_SIZE + 4)
- mfusr $r1, $pc
- sub $r0, $r1, $r0
- ret
-ENDPROC(__get_timerpage)
-
-ENTRY(__get_datapage)
- sethi $r0, hi20(. + 2*PAGE_SIZE + 8)
- ori $r0, $r0, lo12(. + 2*PAGE_SIZE + 4)
- mfusr $r1, $pc
- sub $r0, $r1, $r0
- ret
-ENDPROC(__get_datapage)
diff --git a/arch/nds32/kernel/vdso/gen_vdso_offsets.sh b/arch/nds32/kernel/vdso/gen_vdso_offsets.sh
deleted file mode 100755
index 01924ff071ad..000000000000
--- a/arch/nds32/kernel/vdso/gen_vdso_offsets.sh
+++ /dev/null
@@ -1,15 +0,0 @@
-#!/bin/sh
-
-#
-# Match symbols in the DSO that look like VDSO_*; produce a header file
-# of constant offsets into the shared object.
-#
-# Doing this inside the Makefile will break the $(filter-out) function,
-# causing Kbuild to rebuild the vdso-offsets header file every time.
-#
-# Author: Will Deacon <will.deacon@arm.com
-#
-
-LC_ALL=C
-sed -n -e 's/^00*/0/' -e \
-'s/^\([0-9a-fA-F]*\) . VDSO_\([a-zA-Z0-9_]*\)$/\#define vdso_offset_\2\t0x\1/p'
diff --git a/arch/nds32/kernel/vdso/gettimeofday.c b/arch/nds32/kernel/vdso/gettimeofday.c
deleted file mode 100644
index 9ec03cf0ec54..000000000000
--- a/arch/nds32/kernel/vdso/gettimeofday.c
+++ /dev/null
@@ -1,269 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-// Copyright (C) 2005-2017 Andes Technology Corporation
-
-#include <linux/compiler.h>
-#include <linux/hrtimer.h>
-#include <linux/time.h>
-#include <asm/io.h>
-#include <asm/barrier.h>
-#include <asm/bug.h>
-#include <asm/page.h>
-#include <asm/unistd.h>
-#include <asm/vdso_datapage.h>
-#include <asm/vdso_timer_info.h>
-#include <asm/asm-offsets.h>
-
-#define X(x) #x
-#define Y(x) X(x)
-
-extern struct vdso_data *__get_datapage(void);
-extern struct vdso_data *__get_timerpage(void);
-
-static notrace unsigned int __vdso_read_begin(const struct vdso_data *vdata)
-{
- u32 seq;
-repeat:
- seq = READ_ONCE(vdata->seq_count);
- if (seq & 1) {
- cpu_relax();
- goto repeat;
- }
- return seq;
-}
-
-static notrace unsigned int vdso_read_begin(const struct vdso_data *vdata)
-{
- unsigned int seq;
-
- seq = __vdso_read_begin(vdata);
-
- smp_rmb(); /* Pairs with smp_wmb in vdso_write_end */
- return seq;
-}
-
-static notrace int vdso_read_retry(const struct vdso_data *vdata, u32 start)
-{
- smp_rmb(); /* Pairs with smp_wmb in vdso_write_begin */
- return vdata->seq_count != start;
-}
-
-static notrace long clock_gettime_fallback(clockid_t _clkid,
- struct __kernel_old_timespec *_ts)
-{
- register struct __kernel_old_timespec *ts asm("$r1") = _ts;
- register clockid_t clkid asm("$r0") = _clkid;
- register long ret asm("$r0");
-
- asm volatile ("movi $r15, %3\n"
- "syscall 0x0\n"
- :"=r" (ret)
- :"r"(clkid), "r"(ts), "i"(__NR_clock_gettime)
- :"$r15", "memory");
-
- return ret;
-}
-
-static notrace int do_realtime_coarse(struct __kernel_old_timespec *ts,
- struct vdso_data *vdata)
-{
- u32 seq;
-
- do {
- seq = vdso_read_begin(vdata);
-
- ts->tv_sec = vdata->xtime_coarse_sec;
- ts->tv_nsec = vdata->xtime_coarse_nsec;
-
- } while (vdso_read_retry(vdata, seq));
- return 0;
-}
-
-static notrace int do_monotonic_coarse(struct __kernel_old_timespec *ts,
- struct vdso_data *vdata)
-{
- u32 seq;
- u64 ns;
-
- do {
- seq = vdso_read_begin(vdata);
-
- ts->tv_sec = vdata->xtime_coarse_sec + vdata->wtm_clock_sec;
- ns = vdata->xtime_coarse_nsec + vdata->wtm_clock_nsec;
-
- } while (vdso_read_retry(vdata, seq));
-
- ts->tv_sec += __iter_div_u64_rem(ns, NSEC_PER_SEC, &ns);
- ts->tv_nsec = ns;
-
- return 0;
-}
-
-static notrace inline u64 vgetsns(struct vdso_data *vdso)
-{
- u32 cycle_now;
- u32 cycle_delta;
- u32 *timer_cycle_base;
-
- timer_cycle_base =
- (u32 *) ((char *)__get_timerpage() + vdso->cycle_count_offset);
- cycle_now = readl_relaxed(timer_cycle_base);
- if (true == vdso->cycle_count_down)
- cycle_now = ~(*timer_cycle_base);
- cycle_delta = cycle_now - (u32) vdso->cs_cycle_last;
- return ((u64) cycle_delta & vdso->cs_mask) * vdso->cs_mult;
-}
-
-static notrace int do_realtime(struct __kernel_old_timespec *ts, struct vdso_data *vdata)
-{
- unsigned count;
- u64 ns;
- do {
- count = vdso_read_begin(vdata);
- ts->tv_sec = vdata->xtime_clock_sec;
- ns = vdata->xtime_clock_nsec;
- ns += vgetsns(vdata);
- ns >>= vdata->cs_shift;
- } while (vdso_read_retry(vdata, count));
-
- ts->tv_sec += __iter_div_u64_rem(ns, NSEC_PER_SEC, &ns);
- ts->tv_nsec = ns;
-
- return 0;
-}
-
-static notrace int do_monotonic(struct __kernel_old_timespec *ts, struct vdso_data *vdata)
-{
- u64 ns;
- u32 seq;
-
- do {
- seq = vdso_read_begin(vdata);
-
- ts->tv_sec = vdata->xtime_clock_sec;
- ns = vdata->xtime_clock_nsec;
- ns += vgetsns(vdata);
- ns >>= vdata->cs_shift;
-
- ts->tv_sec += vdata->wtm_clock_sec;
- ns += vdata->wtm_clock_nsec;
-
- } while (vdso_read_retry(vdata, seq));
-
- ts->tv_sec += __iter_div_u64_rem(ns, NSEC_PER_SEC, &ns);
- ts->tv_nsec = ns;
-
- return 0;
-}
-
-notrace int __vdso_clock_gettime(clockid_t clkid, struct __kernel_old_timespec *ts)
-{
- struct vdso_data *vdata;
- int ret = -1;
-
- vdata = __get_datapage();
- if (vdata->cycle_count_offset == EMPTY_REG_OFFSET)
- return clock_gettime_fallback(clkid, ts);
-
- switch (clkid) {
- case CLOCK_REALTIME_COARSE:
- ret = do_realtime_coarse(ts, vdata);
- break;
- case CLOCK_MONOTONIC_COARSE:
- ret = do_monotonic_coarse(ts, vdata);
- break;
- case CLOCK_REALTIME:
- ret = do_realtime(ts, vdata);
- break;
- case CLOCK_MONOTONIC:
- ret = do_monotonic(ts, vdata);
- break;
- default:
- break;
- }
-
- if (ret)
- ret = clock_gettime_fallback(clkid, ts);
-
- return ret;
-}
-
-static notrace int clock_getres_fallback(clockid_t _clk_id,
- struct __kernel_old_timespec *_res)
-{
- register clockid_t clk_id asm("$r0") = _clk_id;
- register struct __kernel_old_timespec *res asm("$r1") = _res;
- register int ret asm("$r0");
-
- asm volatile ("movi $r15, %3\n"
- "syscall 0x0\n"
- :"=r" (ret)
- :"r"(clk_id), "r"(res), "i"(__NR_clock_getres)
- :"$r15", "memory");
-
- return ret;
-}
-
-notrace int __vdso_clock_getres(clockid_t clk_id, struct __kernel_old_timespec *res)
-{
- struct vdso_data *vdata = __get_datapage();
-
- if (res == NULL)
- return 0;
- switch (clk_id) {
- case CLOCK_REALTIME:
- case CLOCK_MONOTONIC:
- case CLOCK_MONOTONIC_RAW:
- res->tv_sec = 0;
- res->tv_nsec = vdata->hrtimer_res;
- break;
- case CLOCK_REALTIME_COARSE:
- case CLOCK_MONOTONIC_COARSE:
- res->tv_sec = 0;
- res->tv_nsec = CLOCK_COARSE_RES;
- break;
- default:
- return clock_getres_fallback(clk_id, res);
- }
- return 0;
-}
-
-static notrace inline int gettimeofday_fallback(struct __kernel_old_timeval *_tv,
- struct timezone *_tz)
-{
- register struct __kernel_old_timeval *tv asm("$r0") = _tv;
- register struct timezone *tz asm("$r1") = _tz;
- register int ret asm("$r0");
-
- asm volatile ("movi $r15, %3\n"
- "syscall 0x0\n"
- :"=r" (ret)
- :"r"(tv), "r"(tz), "i"(__NR_gettimeofday)
- :"$r15", "memory");
-
- return ret;
-}
-
-notrace int __vdso_gettimeofday(struct __kernel_old_timeval *tv, struct timezone *tz)
-{
- struct __kernel_old_timespec ts;
- struct vdso_data *vdata;
- int ret;
-
- vdata = __get_datapage();
-
- if (vdata->cycle_count_offset == EMPTY_REG_OFFSET)
- return gettimeofday_fallback(tv, tz);
-
- ret = do_realtime(&ts, vdata);
-
- if (tv) {
- tv->tv_sec = ts.tv_sec;
- tv->tv_usec = ts.tv_nsec / 1000;
- }
- if (tz) {
- tz->tz_minuteswest = vdata->tz_minuteswest;
- tz->tz_dsttime = vdata->tz_dsttime;
- }
-
- return ret;
-}
diff --git a/arch/nds32/kernel/vdso/note.S b/arch/nds32/kernel/vdso/note.S
deleted file mode 100644
index 0aeaa19b05f0..000000000000
--- a/arch/nds32/kernel/vdso/note.S
+++ /dev/null
@@ -1,11 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-// Copyright (C) 2012 ARM Limited
-// Copyright (C) 2005-2017 Andes Technology Corporation
-
-#include <linux/uts.h>
-#include <linux/version.h>
-#include <linux/elfnote.h>
-
-ELFNOTE_START(Linux, 0, "a")
- .long LINUX_VERSION_CODE
-ELFNOTE_END
diff --git a/arch/nds32/kernel/vdso/sigreturn.S b/arch/nds32/kernel/vdso/sigreturn.S
deleted file mode 100644
index 67e4d1d1612a..000000000000
--- a/arch/nds32/kernel/vdso/sigreturn.S
+++ /dev/null
@@ -1,19 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-// Copyright (C) 2012 ARM Limited
-// Copyright (C) 2005-2017 Andes Technology Corporation
-
-#include <linux/linkage.h>
-#include <asm/unistd.h>
-
- .text
-
-ENTRY(__kernel_rt_sigreturn)
- .cfi_startproc
- movi $r15, __NR_rt_sigreturn
- /*
- * The SWID of syscall should be __NR_rt_sigreturn to synchronize
- * the unwinding scheme in gcc
- */
- syscall __NR_rt_sigreturn
- .cfi_endproc
-ENDPROC(__kernel_rt_sigreturn)
diff --git a/arch/nds32/kernel/vdso/vdso.S b/arch/nds32/kernel/vdso/vdso.S
deleted file mode 100644
index 16737c11e55b..000000000000
--- a/arch/nds32/kernel/vdso/vdso.S
+++ /dev/null
@@ -1,18 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-// Copyright (C) 2012 ARM Limited
-// Copyright (C) 2005-2017 Andes Technology Corporation
-
-#include <linux/init.h>
-#include <linux/linkage.h>
-#include <linux/const.h>
-#include <asm/page.h>
-
- .globl vdso_start, vdso_end
- .section .rodata
- .balign PAGE_SIZE
-vdso_start:
- .incbin "arch/nds32/kernel/vdso/vdso.so"
- .balign PAGE_SIZE
-vdso_end:
-
- .previous
diff --git a/arch/nds32/kernel/vdso/vdso.lds.S b/arch/nds32/kernel/vdso/vdso.lds.S
deleted file mode 100644
index 1f2b16004594..000000000000
--- a/arch/nds32/kernel/vdso/vdso.lds.S
+++ /dev/null
@@ -1,75 +0,0 @@
-/*
- * SPDX-License-Identifier: GPL-2.0
- * Copyright (C) 2005-2017 Andes Technology Corporation
- */
-
-
-#include <linux/const.h>
-#include <asm/page.h>
-#include <asm/vdso.h>
-
-OUTPUT_ARCH(nds32)
-
-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
-
-
- .text : { *(.text*) } :text
-
- .eh_frame_hdr : { *(.eh_frame_hdr) } :text :eh_frame_hdr
- .eh_frame : { KEEP (*(.eh_frame)) } :text
-
- .dynamic : { *(.dynamic) } :text :dynamic
-
- .rodata : { *(.rodata*) } :text
-
-
- /DISCARD/ : {
- *(.note.GNU-stack)
- *(.data .data.* .gnu.linkonce.d.* .sdata*)
- *(.bss .sbss .dynbss .dynsbss)
- }
-}
-
-/*
- * 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 symbols we export from the DSO.
- */
-VERSION
-{
- LINUX_4 {
- global:
- __kernel_rt_sigreturn;
- __vdso_gettimeofday;
- __vdso_clock_getres;
- __vdso_clock_gettime;
- local: *;
- };
-}
-
-/*
- * Make the rt_sigreturn code visible to the kernel.
- */
-VDSO_rt_sigtramp = __kernel_rt_sigreturn;
generated by cgit (git 2.34.1) at 2025-08-01 02:42:07 +0000