mirror of
https://github.com/torvalds/linux.git
synced 2024-11-22 12:11:40 +00:00
s390: remove compat vdso code
Remove compat vdso code, since there is hardly any compat user space left. Still existing compat user space will have to use system calls instead. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
This commit is contained in:
Heiko Carstens
Vasily Gorbik
parent
aa137a6d30
commit
2115fbf721
@ -427,9 +427,6 @@ config COMPAT
|
||||
(and some other stuff like libraries and such) is needed for
|
||||
executing 31 bit applications. It is safe to say "Y".
|
||||
|
||||
config COMPAT_VDSO
|
||||
def_bool COMPAT && !CC_IS_CLANG
|
||||
|
||||
config SYSVIPC_COMPAT
|
||||
def_bool y if COMPAT && SYSVIPC
|
||||
|
||||
|
||||
@ -157,7 +157,6 @@ zfcpdump:
|
||||
|
||||
vdso_install:
|
||||
$(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso64 $@
|
||||
$(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso32 $@
|
||||
|
||||
archclean:
|
||||
$(Q)$(MAKE) $(clean)=$(boot)
|
||||
|
||||
@ -81,4 +81,3 @@ obj-$(CONFIG_TRACEPOINTS) += trace.o
|
||||
|
||||
# vdso
|
||||
obj-y += vdso64/
|
||||
obj-$(CONFIG_COMPAT_VDSO) += vdso32/
|
||||
|
||||
@ -29,13 +29,6 @@
|
||||
#include <asm/vdso.h>
|
||||
#include <asm/facility.h>
|
||||
|
||||
#ifdef CONFIG_COMPAT_VDSO
|
||||
extern char vdso32_start, vdso32_end;
|
||||
static void *vdso32_kbase = &vdso32_start;
|
||||
static unsigned int vdso32_pages;
|
||||
static struct page **vdso32_pagelist;
|
||||
#endif
|
||||
|
||||
extern char vdso64_start, vdso64_end;
|
||||
static void *vdso64_kbase = &vdso64_start;
|
||||
static unsigned int vdso64_pages;
|
||||
@ -55,12 +48,6 @@ static vm_fault_t vdso_fault(const struct vm_special_mapping *sm,
|
||||
|
||||
vdso_pagelist = vdso64_pagelist;
|
||||
vdso_pages = vdso64_pages;
|
||||
#ifdef CONFIG_COMPAT_VDSO
|
||||
if (vma->vm_mm->context.compat_mm) {
|
||||
vdso_pagelist = vdso32_pagelist;
|
||||
vdso_pages = vdso32_pages;
|
||||
}
|
||||
#endif
|
||||
|
||||
if (vmf->pgoff >= vdso_pages)
|
||||
return VM_FAULT_SIGBUS;
|
||||
@ -76,10 +63,6 @@ static int vdso_mremap(const struct vm_special_mapping *sm,
|
||||
unsigned long vdso_pages;
|
||||
|
||||
vdso_pages = vdso64_pages;
|
||||
#ifdef CONFIG_COMPAT_VDSO
|
||||
if (vma->vm_mm->context.compat_mm)
|
||||
vdso_pages = vdso32_pages;
|
||||
#endif
|
||||
|
||||
if ((vdso_pages << PAGE_SHIFT) != vma->vm_end - vma->vm_start)
|
||||
return -EINVAL;
|
||||
@ -209,12 +192,10 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp)
|
||||
if (!vdso_enabled)
|
||||
return 0;
|
||||
|
||||
if (is_compat_task())
|
||||
return 0;
|
||||
|
||||
vdso_pages = vdso64_pages;
|
||||
#ifdef CONFIG_COMPAT_VDSO
|
||||
mm->context.compat_mm = is_compat_task();
|
||||
if (mm->context.compat_mm)
|
||||
vdso_pages = vdso32_pages;
|
||||
#endif
|
||||
/*
|
||||
* vDSO has a problem and was disabled, just don't "enable" it for
|
||||
* the process
|
||||
@ -267,23 +248,6 @@ static int __init vdso_init(void)
|
||||
int i;
|
||||
|
||||
vdso_init_data(vdso_data);
|
||||
#ifdef CONFIG_COMPAT_VDSO
|
||||
/* Calculate the size of the 32 bit vDSO */
|
||||
vdso32_pages = ((&vdso32_end - &vdso32_start
|
||||
+ PAGE_SIZE - 1) >> PAGE_SHIFT) + 1;
|
||||
|
||||
/* Make sure pages are in the correct state */
|
||||
vdso32_pagelist = kcalloc(vdso32_pages + 1, sizeof(struct page *),
|
||||
GFP_KERNEL);
|
||||
BUG_ON(vdso32_pagelist == NULL);
|
||||
for (i = 0; i < vdso32_pages - 1; i++) {
|
||||
struct page *pg = virt_to_page(vdso32_kbase + i*PAGE_SIZE);
|
||||
get_page(pg);
|
||||
vdso32_pagelist[i] = pg;
|
||||
}
|
||||
vdso32_pagelist[vdso32_pages - 1] = virt_to_page(vdso_data);
|
||||
vdso32_pagelist[vdso32_pages] = NULL;
|
||||
#endif
|
||||
|
||||
/* Calculate the size of the 64 bit vDSO */
|
||||
vdso64_pages = ((&vdso64_end - &vdso64_start
|
||||
|
||||
1
arch/s390/kernel/vdso32/.gitignore
vendored
1
arch/s390/kernel/vdso32/.gitignore
vendored
@ -1 +0,0 @@
|
||||
vdso32.lds
|
||||
@ -1,66 +0,0 @@
|
||||
# SPDX-License-Identifier: GPL-2.0
|
||||
# List of files in the vdso, has to be asm only for now
|
||||
|
||||
KCOV_INSTRUMENT := n
|
||||
|
||||
obj-vdso32 = gettimeofday.o clock_getres.o clock_gettime.o note.o getcpu.o
|
||||
|
||||
# Build rules
|
||||
|
||||
targets := $(obj-vdso32) vdso32.so vdso32.so.dbg
|
||||
obj-vdso32 := $(addprefix $(obj)/, $(obj-vdso32))
|
||||
|
||||
KBUILD_AFLAGS += -DBUILD_VDSO
|
||||
KBUILD_CFLAGS += -DBUILD_VDSO
|
||||
|
||||
KBUILD_AFLAGS_31 := $(filter-out -m64,$(KBUILD_AFLAGS))
|
||||
KBUILD_AFLAGS_31 += -m31 -s
|
||||
|
||||
KBUILD_CFLAGS_31 := $(filter-out -m64,$(KBUILD_CFLAGS))
|
||||
KBUILD_CFLAGS_31 += -m31 -fPIC -shared -fno-common -fno-builtin
|
||||
KBUILD_CFLAGS_31 += -nostdlib -Wl,-soname=linux-vdso32.so.1 \
|
||||
-Wl,--hash-style=both
|
||||
|
||||
$(targets:%=$(obj)/%.dbg): KBUILD_CFLAGS = $(KBUILD_CFLAGS_31)
|
||||
$(targets:%=$(obj)/%.dbg): KBUILD_AFLAGS = $(KBUILD_AFLAGS_31)
|
||||
|
||||
obj-y += vdso32_wrapper.o
|
||||
extra-y += vdso32.lds
|
||||
CPPFLAGS_vdso32.lds += -P -C -U$(ARCH)
|
||||
|
||||
# Disable gcov profiling, ubsan and kasan for VDSO code
|
||||
GCOV_PROFILE := n
|
||||
UBSAN_SANITIZE := n
|
||||
KASAN_SANITIZE := n
|
||||
|
||||
# Force dependency (incbin is bad)
|
||||
$(obj)/vdso32_wrapper.o : $(obj)/vdso32.so
|
||||
|
||||
# link rule for the .so file, .lds has to be first
|
||||
$(obj)/vdso32.so.dbg: $(src)/vdso32.lds $(obj-vdso32) FORCE
|
||||
$(call if_changed,vdso32ld)
|
||||
|
||||
# strip rule for the .so file
|
||||
$(obj)/%.so: OBJCOPYFLAGS := -S
|
||||
$(obj)/%.so: $(obj)/%.so.dbg FORCE
|
||||
$(call if_changed,objcopy)
|
||||
|
||||
# assembly rules for the .S files
|
||||
$(obj-vdso32): %.o: %.S FORCE
|
||||
$(call if_changed_dep,vdso32as)
|
||||
|
||||
# actual build commands
|
||||
quiet_cmd_vdso32ld = VDSO32L $@
|
||||
cmd_vdso32ld = $(CC) $(c_flags) -Wl,-T $(filter %.lds %.o,$^) -o $@
|
||||
quiet_cmd_vdso32as = VDSO32A $@
|
||||
cmd_vdso32as = $(CC) $(a_flags) -c -o $@ $<
|
||||
|
||||
# install commands for the unstripped file
|
||||
quiet_cmd_vdso_install = INSTALL $@
|
||||
cmd_vdso_install = cp $(obj)/$@.dbg $(MODLIB)/vdso/$@
|
||||
|
||||
vdso32.so: $(obj)/vdso32.so.dbg
|
||||
@mkdir -p $(MODLIB)/vdso
|
||||
$(call cmd,vdso_install)
|
||||
|
||||
vdso_install: vdso32.so
|
||||
@ -1,44 +0,0 @@
|
||||
/* SPDX-License-Identifier: GPL-2.0 */
|
||||
/*
|
||||
* Userland implementation of clock_getres() for 32 bits processes in a
|
||||
* s390 kernel for use in the vDSO
|
||||
*
|
||||
* Copyright IBM Corp. 2008
|
||||
* Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com)
|
||||
*/
|
||||
#include <asm/vdso.h>
|
||||
#include <asm/asm-offsets.h>
|
||||
#include <asm/unistd.h>
|
||||
#include <asm/dwarf.h>
|
||||
|
||||
.text
|
||||
.align 4
|
||||
.globl __kernel_clock_getres
|
||||
.type __kernel_clock_getres,@function
|
||||
__kernel_clock_getres:
|
||||
CFI_STARTPROC
|
||||
basr %r1,0
|
||||
la %r1,4f-.(%r1)
|
||||
chi %r2,__CLOCK_REALTIME
|
||||
je 0f
|
||||
chi %r2,__CLOCK_MONOTONIC
|
||||
je 0f
|
||||
la %r1,5f-4f(%r1)
|
||||
chi %r2,__CLOCK_REALTIME_COARSE
|
||||
je 0f
|
||||
chi %r2,__CLOCK_MONOTONIC_COARSE
|
||||
jne 3f
|
||||
0: ltr %r3,%r3
|
||||
jz 2f /* res == NULL */
|
||||
1: l %r0,0(%r1)
|
||||
xc 0(4,%r3),0(%r3) /* set tp->tv_sec to zero */
|
||||
st %r0,4(%r3) /* store tp->tv_usec */
|
||||
2: lhi %r2,0
|
||||
br %r14
|
||||
3: lhi %r1,__NR_clock_getres /* fallback to svc */
|
||||
svc 0
|
||||
br %r14
|
||||
CFI_ENDPROC
|
||||
4: .long __CLOCK_REALTIME_RES
|
||||
5: .long __CLOCK_COARSE_RES
|
||||
.size __kernel_clock_getres,.-__kernel_clock_getres
|
||||
@ -1,179 +0,0 @@
|
||||
/* SPDX-License-Identifier: GPL-2.0 */
|
||||
/*
|
||||
* Userland implementation of clock_gettime() for 32 bits processes in a
|
||||
* s390 kernel for use in the vDSO
|
||||
*
|
||||
* Copyright IBM Corp. 2008
|
||||
* Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com)
|
||||
*/
|
||||
#include <asm/vdso.h>
|
||||
#include <asm/asm-offsets.h>
|
||||
#include <asm/unistd.h>
|
||||
#include <asm/dwarf.h>
|
||||
#include <asm/ptrace.h>
|
||||
|
||||
.text
|
||||
.align 4
|
||||
.globl __kernel_clock_gettime
|
||||
.type __kernel_clock_gettime,@function
|
||||
__kernel_clock_gettime:
|
||||
CFI_STARTPROC
|
||||
ahi %r15,-16
|
||||
CFI_DEF_CFA_OFFSET STACK_FRAME_OVERHEAD+16
|
||||
CFI_VAL_OFFSET 15, -STACK_FRAME_OVERHEAD
|
||||
basr %r5,0
|
||||
0: al %r5,21f-0b(%r5) /* get &_vdso_data */
|
||||
chi %r2,__CLOCK_REALTIME_COARSE
|
||||
je 10f
|
||||
chi %r2,__CLOCK_REALTIME
|
||||
je 11f
|
||||
chi %r2,__CLOCK_MONOTONIC_COARSE
|
||||
je 9f
|
||||
chi %r2,__CLOCK_MONOTONIC
|
||||
jne 19f
|
||||
|
||||
/* CLOCK_MONOTONIC */
|
||||
1: l %r4,__VDSO_UPD_COUNT+4(%r5) /* load update counter */
|
||||
tml %r4,0x0001 /* pending update ? loop */
|
||||
jnz 1b
|
||||
stcke 0(%r15) /* Store TOD clock */
|
||||
lm %r0,%r1,1(%r15)
|
||||
s %r0,__VDSO_XTIME_STAMP(%r5) /* TOD - cycle_last */
|
||||
sl %r1,__VDSO_XTIME_STAMP+4(%r5)
|
||||
brc 3,2f
|
||||
ahi %r0,-1
|
||||
2: ms %r0,__VDSO_TK_MULT(%r5) /* * tk->mult */
|
||||
lr %r2,%r0
|
||||
l %r0,__VDSO_TK_MULT(%r5)
|
||||
ltr %r1,%r1
|
||||
mr %r0,%r0
|
||||
jnm 3f
|
||||
a %r0,__VDSO_TK_MULT(%r5)
|
||||
3: alr %r0,%r2
|
||||
al %r0,__VDSO_WTOM_NSEC(%r5)
|
||||
al %r1,__VDSO_WTOM_NSEC+4(%r5)
|
||||
brc 12,5f
|
||||
ahi %r0,1
|
||||
5: l %r2,__VDSO_TK_SHIFT(%r5) /* Timekeeper shift */
|
||||
srdl %r0,0(%r2) /* >> tk->shift */
|
||||
l %r2,__VDSO_WTOM_SEC+4(%r5)
|
||||
cl %r4,__VDSO_UPD_COUNT+4(%r5) /* check update counter */
|
||||
jne 1b
|
||||
basr %r5,0
|
||||
6: ltr %r0,%r0
|
||||
jnz 7f
|
||||
cl %r1,20f-6b(%r5)
|
||||
jl 8f
|
||||
7: ahi %r2,1
|
||||
sl %r1,20f-6b(%r5)
|
||||
brc 3,6b
|
||||
ahi %r0,-1
|
||||
j 6b
|
||||
8: st %r2,0(%r3) /* store tp->tv_sec */
|
||||
st %r1,4(%r3) /* store tp->tv_nsec */
|
||||
lhi %r2,0
|
||||
ahi %r15,16
|
||||
CFI_DEF_CFA_OFFSET STACK_FRAME_OVERHEAD
|
||||
CFI_RESTORE 15
|
||||
br %r14
|
||||
|
||||
/* CLOCK_MONOTONIC_COARSE */
|
||||
CFI_DEF_CFA_OFFSET STACK_FRAME_OVERHEAD+16
|
||||
CFI_VAL_OFFSET 15, -STACK_FRAME_OVERHEAD
|
||||
9: l %r4,__VDSO_UPD_COUNT+4(%r5) /* load update counter */
|
||||
tml %r4,0x0001 /* pending update ? loop */
|
||||
jnz 9b
|
||||
l %r2,__VDSO_WTOM_CRS_SEC+4(%r5)
|
||||
l %r1,__VDSO_WTOM_CRS_NSEC+4(%r5)
|
||||
cl %r4,__VDSO_UPD_COUNT+4(%r5) /* check update counter */
|
||||
jne 9b
|
||||
j 8b
|
||||
|
||||
/* CLOCK_REALTIME_COARSE */
|
||||
10: l %r4,__VDSO_UPD_COUNT+4(%r5) /* load update counter */
|
||||
tml %r4,0x0001 /* pending update ? loop */
|
||||
jnz 10b
|
||||
l %r2,__VDSO_XTIME_CRS_SEC+4(%r5)
|
||||
l %r1,__VDSO_XTIME_CRS_NSEC+4(%r5)
|
||||
cl %r4,__VDSO_UPD_COUNT+4(%r5) /* check update counter */
|
||||
jne 10b
|
||||
j 17f
|
||||
|
||||
/* CLOCK_REALTIME */
|
||||
11: l %r4,__VDSO_UPD_COUNT+4(%r5) /* load update counter */
|
||||
tml %r4,0x0001 /* pending update ? loop */
|
||||
jnz 11b
|
||||
stcke 0(%r15) /* Store TOD clock */
|
||||
lm %r0,%r1,__VDSO_TS_END(%r5) /* TOD steering end time */
|
||||
s %r0,1(%r15) /* no - ts_steering_end */
|
||||
sl %r1,5(%r15)
|
||||
brc 3,22f
|
||||
ahi %r0,-1
|
||||
22: ltr %r0,%r0 /* past end of steering? */
|
||||
jm 24f
|
||||
srdl %r0,15 /* 1 per 2^16 */
|
||||
tm __VDSO_TS_DIR+3(%r5),0x01 /* steering direction? */
|
||||
jz 23f
|
||||
lcr %r0,%r0 /* negative TOD offset */
|
||||
lcr %r1,%r1
|
||||
je 23f
|
||||
ahi %r0,-1
|
||||
23: a %r0,1(%r15) /* add TOD timestamp */
|
||||
al %r1,5(%r15)
|
||||
brc 12,25f
|
||||
ahi %r0,1
|
||||
j 25f
|
||||
24: lm %r0,%r1,1(%r15) /* load TOD timestamp */
|
||||
25: s %r0,__VDSO_XTIME_STAMP(%r5) /* TOD - cycle_last */
|
||||
sl %r1,__VDSO_XTIME_STAMP+4(%r5)
|
||||
brc 3,12f
|
||||
ahi %r0,-1
|
||||
12: ms %r0,__VDSO_TK_MULT(%r5) /* * tk->mult */
|
||||
lr %r2,%r0
|
||||
l %r0,__VDSO_TK_MULT(%r5)
|
||||
ltr %r1,%r1
|
||||
mr %r0,%r0
|
||||
jnm 13f
|
||||
a %r0,__VDSO_TK_MULT(%r5)
|
||||
13: alr %r0,%r2
|
||||
al %r0,__VDSO_XTIME_NSEC(%r5) /* + tk->xtime_nsec */
|
||||
al %r1,__VDSO_XTIME_NSEC+4(%r5)
|
||||
brc 12,14f
|
||||
ahi %r0,1
|
||||
14: l %r2,__VDSO_TK_SHIFT(%r5) /* Timekeeper shift */
|
||||
srdl %r0,0(%r2) /* >> tk->shift */
|
||||
l %r2,__VDSO_XTIME_SEC+4(%r5)
|
||||
cl %r4,__VDSO_UPD_COUNT+4(%r5) /* check update counter */
|
||||
jne 11b
|
||||
basr %r5,0
|
||||
15: ltr %r0,%r0
|
||||
jnz 16f
|
||||
cl %r1,20f-15b(%r5)
|
||||
jl 17f
|
||||
16: ahi %r2,1
|
||||
sl %r1,20f-15b(%r5)
|
||||
brc 3,15b
|
||||
ahi %r0,-1
|
||||
j 15b
|
||||
17: st %r2,0(%r3) /* store tp->tv_sec */
|
||||
st %r1,4(%r3) /* store tp->tv_nsec */
|
||||
lhi %r2,0
|
||||
ahi %r15,16
|
||||
CFI_DEF_CFA_OFFSET STACK_FRAME_OVERHEAD
|
||||
CFI_RESTORE 15
|
||||
br %r14
|
||||
|
||||
/* Fallback to system call */
|
||||
CFI_DEF_CFA_OFFSET STACK_FRAME_OVERHEAD+16
|
||||
CFI_VAL_OFFSET 15, -STACK_FRAME_OVERHEAD
|
||||
19: lhi %r1,__NR_clock_gettime
|
||||
svc 0
|
||||
ahi %r15,16
|
||||
CFI_DEF_CFA_OFFSET STACK_FRAME_OVERHEAD
|
||||
CFI_RESTORE 15
|
||||
br %r14
|
||||
CFI_ENDPROC
|
||||
|
||||
20: .long 1000000000
|
||||
21: .long _vdso_data - 0b
|
||||
.size __kernel_clock_gettime,.-__kernel_clock_gettime
|
||||
@ -1,31 +0,0 @@
|
||||
/* SPDX-License-Identifier: GPL-2.0 */
|
||||
/*
|
||||
* Userland implementation of getcpu() for 32 bits processes in a
|
||||
* s390 kernel for use in the vDSO
|
||||
*
|
||||
* Copyright IBM Corp. 2016
|
||||
* Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com>
|
||||
*/
|
||||
#include <asm/vdso.h>
|
||||
#include <asm/asm-offsets.h>
|
||||
#include <asm/dwarf.h>
|
||||
|
||||
.text
|
||||
.align 4
|
||||
.globl __kernel_getcpu
|
||||
.type __kernel_getcpu,@function
|
||||
__kernel_getcpu:
|
||||
CFI_STARTPROC
|
||||
sacf 256
|
||||
lm %r4,%r5,__VDSO_GETCPU_VAL(%r0)
|
||||
sacf 0
|
||||
ltr %r2,%r2
|
||||
jz 2f
|
||||
st %r5,0(%r2)
|
||||
2: ltr %r3,%r3
|
||||
jz 3f
|
||||
st %r4,0(%r3)
|
||||
3: lhi %r2,0
|
||||
br %r14
|
||||
CFI_ENDPROC
|
||||
.size __kernel_getcpu,.-__kernel_getcpu
|
||||
@ -1,103 +0,0 @@
|
||||
/* SPDX-License-Identifier: GPL-2.0 */
|
||||
/*
|
||||
* Userland implementation of gettimeofday() for 32 bits processes in a
|
||||
* s390 kernel for use in the vDSO
|
||||
*
|
||||
* Copyright IBM Corp. 2008
|
||||
* Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com)
|
||||
*/
|
||||
#include <asm/vdso.h>
|
||||
#include <asm/asm-offsets.h>
|
||||
#include <asm/unistd.h>
|
||||
#include <asm/dwarf.h>
|
||||
#include <asm/ptrace.h>
|
||||
|
||||
.text
|
||||
.align 4
|
||||
.globl __kernel_gettimeofday
|
||||
.type __kernel_gettimeofday,@function
|
||||
__kernel_gettimeofday:
|
||||
CFI_STARTPROC
|
||||
ahi %r15,-16
|
||||
CFI_ADJUST_CFA_OFFSET 16
|
||||
CFI_VAL_OFFSET 15, -STACK_FRAME_OVERHEAD
|
||||
basr %r5,0
|
||||
0: al %r5,13f-0b(%r5) /* get &_vdso_data */
|
||||
1: ltr %r3,%r3 /* check if tz is NULL */
|
||||
je 2f
|
||||
mvc 0(8,%r3),__VDSO_TIMEZONE(%r5)
|
||||
2: ltr %r2,%r2 /* check if tv is NULL */
|
||||
je 10f
|
||||
l %r4,__VDSO_UPD_COUNT+4(%r5) /* load update counter */
|
||||
tml %r4,0x0001 /* pending update ? loop */
|
||||
jnz 1b
|
||||
stcke 0(%r15) /* Store TOD clock */
|
||||
lm %r0,%r1,__VDSO_TS_END(%r5) /* TOD steering end time */
|
||||
s %r0,1(%r15)
|
||||
sl %r1,5(%r15)
|
||||
brc 3,14f
|
||||
ahi %r0,-1
|
||||
14: ltr %r0,%r0 /* past end of steering? */
|
||||
jm 16f
|
||||
srdl %r0,15 /* 1 per 2^16 */
|
||||
tm __VDSO_TS_DIR+3(%r5),0x01 /* steering direction? */
|
||||
jz 15f
|
||||
lcr %r0,%r0 /* negative TOD offset */
|
||||
lcr %r1,%r1
|
||||
je 15f
|
||||
ahi %r0,-1
|
||||
15: a %r0,1(%r15) /* add TOD timestamp */
|
||||
al %r1,5(%r15)
|
||||
brc 12,17f
|
||||
ahi %r0,1
|
||||
j 17f
|
||||
16: lm %r0,%r1,1(%r15) /* load TOD timestamp */
|
||||
17: s %r0,__VDSO_XTIME_STAMP(%r5) /* TOD - cycle_last */
|
||||
sl %r1,__VDSO_XTIME_STAMP+4(%r5)
|
||||
brc 3,3f
|
||||
ahi %r0,-1
|
||||
3: ms %r0,__VDSO_TK_MULT(%r5) /* * tk->mult */
|
||||
st %r0,0(%r15)
|
||||
l %r0,__VDSO_TK_MULT(%r5)
|
||||
ltr %r1,%r1
|
||||
mr %r0,%r0
|
||||
jnm 4f
|
||||
a %r0,__VDSO_TK_MULT(%r5)
|
||||
4: al %r0,0(%r15)
|
||||
al %r0,__VDSO_XTIME_NSEC(%r5) /* + xtime */
|
||||
al %r1,__VDSO_XTIME_NSEC+4(%r5)
|
||||
brc 12,5f
|
||||
ahi %r0,1
|
||||
5: mvc 0(4,%r15),__VDSO_XTIME_SEC+4(%r5)
|
||||
cl %r4,__VDSO_UPD_COUNT+4(%r5) /* check update counter */
|
||||
jne 1b
|
||||
l %r4,__VDSO_TK_SHIFT(%r5) /* Timekeeper shift */
|
||||
srdl %r0,0(%r4) /* >> tk->shift */
|
||||
l %r4,0(%r15) /* get tv_sec from stack */
|
||||
basr %r5,0
|
||||
6: ltr %r0,%r0
|
||||
jnz 7f
|
||||
cl %r1,11f-6b(%r5)
|
||||
jl 8f
|
||||
7: ahi %r4,1
|
||||
sl %r1,11f-6b(%r5)
|
||||
brc 3,6b
|
||||
ahi %r0,-1
|
||||
j 6b
|
||||
8: st %r4,0(%r2) /* store tv->tv_sec */
|
||||
ltr %r1,%r1
|
||||
m %r0,12f-6b(%r5)
|
||||
jnm 9f
|
||||
al %r0,12f-6b(%r5)
|
||||
9: srl %r0,6
|
||||
st %r0,4(%r2) /* store tv->tv_usec */
|
||||
10: slr %r2,%r2
|
||||
ahi %r15,16
|
||||
CFI_ADJUST_CFA_OFFSET -16
|
||||
CFI_RESTORE 15
|
||||
br %r14
|
||||
CFI_ENDPROC
|
||||
11: .long 1000000000
|
||||
12: .long 274877907
|
||||
13: .long _vdso_data - 0b
|
||||
.size __kernel_gettimeofday,.-__kernel_gettimeofday
|
||||
@ -1,13 +0,0 @@
|
||||
/* SPDX-License-Identifier: GPL-2.0 */
|
||||
/*
|
||||
* This supplies .note.* sections to go into the PT_NOTE inside the vDSO text.
|
||||
* Here we can supply some information useful to userland.
|
||||
*/
|
||||
|
||||
#include <linux/uts.h>
|
||||
#include <linux/version.h>
|
||||
#include <linux/elfnote.h>
|
||||
|
||||
ELFNOTE_START(Linux, 0, "a")
|
||||
.long LINUX_VERSION_CODE
|
||||
ELFNOTE_END
|
||||
@ -1,142 +0,0 @@
|
||||
/* SPDX-License-Identifier: GPL-2.0 */
|
||||
/*
|
||||
* This is the infamous ld script for the 32 bits vdso
|
||||
* library
|
||||
*/
|
||||
|
||||
#include <asm/page.h>
|
||||
#include <asm/vdso.h>
|
||||
|
||||
OUTPUT_FORMAT("elf32-s390", "elf32-s390", "elf32-s390")
|
||||
OUTPUT_ARCH(s390:31-bit)
|
||||
ENTRY(_start)
|
||||
|
||||
SECTIONS
|
||||
{
|
||||
. = VDSO32_LBASE + 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
|
||||
|
||||
. = ALIGN(16);
|
||||
.text : {
|
||||
*(.text .stub .text.* .gnu.linkonce.t.*)
|
||||
} :text
|
||||
PROVIDE(__etext = .);
|
||||
PROVIDE(_etext = .);
|
||||
PROVIDE(etext = .);
|
||||
|
||||
/*
|
||||
* Other stuff is appended to the text segment:
|
||||
*/
|
||||
.rodata : { *(.rodata .rodata.* .gnu.linkonce.r.*) }
|
||||
.rodata1 : { *(.rodata1) }
|
||||
|
||||
.dynamic : { *(.dynamic) } :text :dynamic
|
||||
|
||||
.eh_frame_hdr : { *(.eh_frame_hdr) } :text :eh_frame_hdr
|
||||
.eh_frame : { KEEP (*(.eh_frame)) } :text
|
||||
.gcc_except_table : { *(.gcc_except_table .gcc_except_table.*) }
|
||||
|
||||
.rela.dyn ALIGN(8) : { *(.rela.dyn) }
|
||||
.got ALIGN(8) : { *(.got .toc) }
|
||||
|
||||
_end = .;
|
||||
PROVIDE(end = .);
|
||||
|
||||
/*
|
||||
* Stabs debugging sections are here too.
|
||||
*/
|
||||
.stab 0 : { *(.stab) }
|
||||
.stabstr 0 : { *(.stabstr) }
|
||||
.stab.excl 0 : { *(.stab.excl) }
|
||||
.stab.exclstr 0 : { *(.stab.exclstr) }
|
||||
.stab.index 0 : { *(.stab.index) }
|
||||
.stab.indexstr 0 : { *(.stab.indexstr) }
|
||||
.comment 0 : { *(.comment) }
|
||||
|
||||
/*
|
||||
* DWARF debug sections.
|
||||
* Symbols in the DWARF debugging sections are relative to the
|
||||
* beginning of the section so we begin them at 0.
|
||||
*/
|
||||
/* DWARF 1 */
|
||||
.debug 0 : { *(.debug) }
|
||||
.line 0 : { *(.line) }
|
||||
/* GNU DWARF 1 extensions */
|
||||
.debug_srcinfo 0 : { *(.debug_srcinfo) }
|
||||
.debug_sfnames 0 : { *(.debug_sfnames) }
|
||||
/* DWARF 1.1 and DWARF 2 */
|
||||
.debug_aranges 0 : { *(.debug_aranges) }
|
||||
.debug_pubnames 0 : { *(.debug_pubnames) }
|
||||
/* DWARF 2 */
|
||||
.debug_info 0 : { *(.debug_info .gnu.linkonce.wi.*) }
|
||||
.debug_abbrev 0 : { *(.debug_abbrev) }
|
||||
.debug_line 0 : { *(.debug_line) }
|
||||
.debug_frame 0 : { *(.debug_frame) }
|
||||
.debug_str 0 : { *(.debug_str) }
|
||||
.debug_loc 0 : { *(.debug_loc) }
|
||||
.debug_macinfo 0 : { *(.debug_macinfo) }
|
||||
/* SGI/MIPS DWARF 2 extensions */
|
||||
.debug_weaknames 0 : { *(.debug_weaknames) }
|
||||
.debug_funcnames 0 : { *(.debug_funcnames) }
|
||||
.debug_typenames 0 : { *(.debug_typenames) }
|
||||
.debug_varnames 0 : { *(.debug_varnames) }
|
||||
/* DWARF 3 */
|
||||
.debug_pubtypes 0 : { *(.debug_pubtypes) }
|
||||
.debug_ranges 0 : { *(.debug_ranges) }
|
||||
.gnu.attributes 0 : { KEEP (*(.gnu.attributes)) }
|
||||
|
||||
. = ALIGN(PAGE_SIZE);
|
||||
PROVIDE(_vdso_data = .);
|
||||
|
||||
/DISCARD/ : {
|
||||
*(.note.GNU-stack)
|
||||
*(.branch_lt)
|
||||
*(.data .data.* .gnu.linkonce.d.* .sdata*)
|
||||
*(.bss .sbss .dynbss .dynsbss)
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* Very old versions of ld do not recognize this name token; use the constant.
|
||||
*/
|
||||
#define PT_GNU_EH_FRAME 0x6474e550
|
||||
|
||||
/*
|
||||
* 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 FILEHDR PHDRS FLAGS(5); /* 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
|
||||
{
|
||||
VDSO_VERSION_STRING {
|
||||
global:
|
||||
/*
|
||||
* Has to be there for the kernel to find
|
||||
*/
|
||||
__kernel_gettimeofday;
|
||||
__kernel_clock_gettime;
|
||||
__kernel_clock_getres;
|
||||
__kernel_getcpu;
|
||||
|
||||
local: *;
|
||||
};
|
||||
}
|
||||
@ -1,15 +0,0 @@
|
||||
/* SPDX-License-Identifier: GPL-2.0 */
|
||||
#include <linux/init.h>
|
||||
#include <linux/linkage.h>
|
||||
#include <asm/page.h>
|
||||
|
||||
__PAGE_ALIGNED_DATA
|
||||
|
||||
.globl vdso32_start, vdso32_end
|
||||
.balign PAGE_SIZE
|
||||
vdso32_start:
|
||||
.incbin "arch/s390/kernel/vdso32/vdso32.so"
|
||||
.balign PAGE_SIZE
|
||||
vdso32_end:
|
||||
|
||||
.previous
|
||||
Loading…
Reference in New Issue
Block a user