(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
vdso_install:
$(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso64 $@
- $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso32 $@
archclean:
$(Q)$(MAKE) $(clean)=$(boot)
# vdso
obj-y += vdso64/
-obj-$(CONFIG_COMPAT_VDSO) += vdso32/
#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;
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;
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;
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
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
+++ /dev/null
-vdso32.lds
+++ /dev/null
-# 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
+++ /dev/null
-/* 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
+++ /dev/null
-/* 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
+++ /dev/null
-/* 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
+++ /dev/null
-/* 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
+++ /dev/null
-/* 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
+++ /dev/null
-/* 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: *;
- };
-}
+++ /dev/null
-/* 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
projects / linux-2.6-microblaze.git / commitdiff