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-rw-r--r--arch/powerpc/kernel/vdso/vdso32.lds.S138
1 files changed, 138 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/vdso/vdso32.lds.S b/arch/powerpc/kernel/vdso/vdso32.lds.S
new file mode 100644
index 000000000..bc0be274a
--- /dev/null
+++ b/arch/powerpc/kernel/vdso/vdso32.lds.S
@@ -0,0 +1,138 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * This is the infamous ld script for the 32 bits vdso
+ * library
+ */
+#include <asm/vdso.h>
+#include <asm/page.h>
+#include <asm-generic/vmlinux.lds.h>
+
+#ifdef __LITTLE_ENDIAN__
+OUTPUT_FORMAT("elf32-powerpcle", "elf32-powerpcle", "elf32-powerpcle")
+#else
+OUTPUT_FORMAT("elf32-powerpc", "elf32-powerpc", "elf32-powerpc")
+#endif
+OUTPUT_ARCH(powerpc:common)
+
+SECTIONS
+{
+ PROVIDE(_vdso_datapage = . - 2 * PAGE_SIZE);
+ . = 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.* __ftr_alt_*)
+ } :text
+ PROVIDE(__etext = .);
+ PROVIDE(_etext = .);
+ PROVIDE(etext = .);
+
+ . = ALIGN(8);
+ VDSO_ftr_fixup_start = .;
+ __ftr_fixup : { *(__ftr_fixup) }
+ VDSO_ftr_fixup_end = .;
+
+ . = ALIGN(8);
+ VDSO_mmu_ftr_fixup_start = .;
+ __mmu_ftr_fixup : { *(__mmu_ftr_fixup) }
+ VDSO_mmu_ftr_fixup_end = .;
+
+ . = ALIGN(8);
+ VDSO_lwsync_fixup_start = .;
+ __lwsync_fixup : { *(__lwsync_fixup) }
+ VDSO_lwsync_fixup_end = .;
+
+#ifdef CONFIG_PPC64
+ . = ALIGN(8);
+ VDSO_fw_ftr_fixup_start = .;
+ __fw_ftr_fixup : { *(__fw_ftr_fixup) }
+ VDSO_fw_ftr_fixup_end = .;
+#endif
+
+ /*
+ * Other stuff is appended to the text segment:
+ */
+ .rodata : { *(.rodata .rodata.* .gnu.linkonce.r.*) }
+ .rodata1 : { *(.rodata1) }
+
+ .eh_frame_hdr : { *(.eh_frame_hdr) } :text :eh_frame_hdr
+ .eh_frame : { KEEP (*(.eh_frame)) } :text
+ .gcc_except_table : { *(.gcc_except_table) }
+ .fixup : { *(.fixup) }
+
+ .dynamic : { *(.dynamic) } :text :dynamic
+ .got : { *(.got) } :text
+ .plt : { *(.plt) }
+
+ _end = .;
+ __end = .;
+ PROVIDE(end = .);
+
+ DWARF_DEBUG
+ ELF_DETAILS
+
+ /DISCARD/ : {
+ *(.note.GNU-stack)
+ *(.data .data.* .gnu.linkonce.d.* .sdata*)
+ *(.bss .sbss .dynbss .dynsbss)
+ *(.got1)
+ }
+}
+
+/*
+ * 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:
+ __kernel_get_syscall_map;
+ __kernel_gettimeofday;
+ __kernel_clock_gettime;
+ __kernel_clock_gettime64;
+ __kernel_clock_getres;
+ __kernel_time;
+ __kernel_get_tbfreq;
+ __kernel_sync_dicache;
+ __kernel_sigtramp32;
+ __kernel_sigtramp_rt32;
+#if defined(CONFIG_PPC64) || !defined(CONFIG_SMP)
+ __kernel_getcpu;
+#endif
+
+ local: *;
+ };
+}
+
+/*
+ * Make the sigreturn code visible to the kernel.
+ */
+VDSO_sigtramp32 = __kernel_sigtramp32;
+VDSO_sigtramp_rt32 = __kernel_sigtramp_rt32;