24c96b9259
Pythons find_library is broken with binutils 2.34, and numpy could not import libraries because of not properly aligned ELF's. This is the second time binutils 2.34 got reverted. Next time, we should have a dedicated Hydra job for it. This reverts commit629fa8a2d4, reversing changes made to4ddd080d19.
137 lines
4 KiB
Diff
137 lines
4 KiB
Diff
From 28a27bdbb9500797e6767f80c8128b09112aeed5 Mon Sep 17 00:00:00 2001
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From: "H.J. Lu" <hjl.tools@gmail.com>
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Date: Sat, 11 Aug 2018 06:41:33 -0700
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Subject: [PATCH] x86: Properly add X86_ISA_1_NEEDED property
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Existing properties may be removed during property merging. We avoid
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adding X86_ISA_1_NEEDED property only if existing properties won't be
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removed.
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bfd/
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PR ld/23428
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* elfxx-x86.c (_bfd_x86_elf_link_setup_gnu_properties): Don't
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add X86_ISA_1_NEEDED property only if existing properties won't
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be removed.
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ld/
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PR ld/23428
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* testsuite/ld-elf/dummy.s: New file.
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* testsuite/ld-elf/linux-x86.S: Add X86_FEATURE_1_AND property.
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* testsuite/ld-elf/linux-x86.exp: Add dummy.s to pr23428.
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(cherry picked from commit ab9e342807d132182892de1be1a92d6e91a5c1da)
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---
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bfd/elfxx-x86.c | 28 ++++++++++++++++++++++------
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ld/testsuite/ld-elf/dummy.s | 1 +
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ld/testsuite/ld-elf/linux-x86.S | 28 ++++++++++++++++++++++++++++
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ld/testsuite/ld-elf/linux-x86.exp | 2 +-
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6 files changed, 66 insertions(+), 7 deletions(-)
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create mode 100644 ld/testsuite/ld-elf/dummy.s
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diff --git a/bfd/elfxx-x86.c b/bfd/elfxx-x86.c
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index 7ccfd25815..2d8f7b640b 100644
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--- a/bfd/elfxx-x86.c
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+++ b/bfd/elfxx-x86.c
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@@ -2588,7 +2588,6 @@ _bfd_x86_elf_link_setup_gnu_properties
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prop->pr_kind = property_number;
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}
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else if (has_text
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- && elf_properties (ebfd) == NULL
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&& elf_tdata (info->output_bfd)->o->build_id.sec == NULL
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&& !htab->elf.dynamic_sections_created
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&& !info->traditional_format
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@@ -2598,11 +2597,28 @@ _bfd_x86_elf_link_setup_gnu_properties
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/* If the separate code program header is needed, make sure
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that the first read-only PT_LOAD segment has no code by
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adding a GNU_PROPERTY_X86_ISA_1_NEEDED note. */
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- prop = _bfd_elf_get_property (ebfd,
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- GNU_PROPERTY_X86_ISA_1_NEEDED,
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- 4);
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- prop->u.number = GNU_PROPERTY_X86_ISA_1_486;
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- prop->pr_kind = property_number;
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+ elf_property_list *list;
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+ bfd_boolean need_property = TRUE;
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+
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+ for (list = elf_properties (ebfd); list; list = list->next)
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+ switch (list->property.pr_type)
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+ {
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+ case GNU_PROPERTY_STACK_SIZE:
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+ case GNU_PROPERTY_NO_COPY_ON_PROTECTED:
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+ case GNU_PROPERTY_X86_ISA_1_NEEDED:
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+ /* These properties won't be removed during merging. */
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+ need_property = FALSE;
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+ break;
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+ }
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+
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+ if (need_property)
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+ {
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+ prop = _bfd_elf_get_property (ebfd,
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+ GNU_PROPERTY_X86_ISA_1_NEEDED,
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+ 4);
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+ prop->u.number = GNU_PROPERTY_X86_ISA_1_486;
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+ prop->pr_kind = property_number;
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+ }
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}
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/* Create the GNU property note section if needed. */
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diff --git a/ld/testsuite/ld-elf/dummy.s b/ld/testsuite/ld-elf/dummy.s
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new file mode 100644
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index 0000000000..403f98000d
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--- /dev/null
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+++ b/ld/testsuite/ld-elf/dummy.s
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@@ -0,0 +1 @@
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+# Dummy
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diff --git a/ld/testsuite/ld-elf/linux-x86.S b/ld/testsuite/ld-elf/linux-x86.S
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index bdf40c6e01..d94abc1106 100644
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--- a/ld/testsuite/ld-elf/linux-x86.S
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+++ b/ld/testsuite/ld-elf/linux-x86.S
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@@ -61,3 +61,31 @@ syscall:
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ret /* Return to caller. */
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.size syscall, .-syscall
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.section .note.GNU-stack,"",@progbits
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+
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+ .section ".note.gnu.property", "a"
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+#ifdef __LP64__
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+ .p2align 3
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+#else
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+ .p2align 2
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+#endif
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+ .long 1f - 0f /* name length */
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+ .long 5f - 2f /* data length */
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+ .long 5 /* note type */
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+0: .asciz "GNU" /* vendor name */
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+1:
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+#ifdef __LP64__
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+ .p2align 3
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+#else
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+ .p2align 2
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+#endif
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+2: .long 0xc0000002 /* pr_type. */
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+ .long 4f - 3f /* pr_datasz. */
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+3:
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+ .long 0x2
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+4:
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+#ifdef __LP64__
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+ .p2align 3
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+#else
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+ .p2align 2
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+#endif
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+5:
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diff --git a/ld/testsuite/ld-elf/linux-x86.exp b/ld/testsuite/ld-elf/linux-x86.exp
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index 36217c6fb4..f6f5a80853 100644
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--- a/ld/testsuite/ld-elf/linux-x86.exp
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+++ b/ld/testsuite/ld-elf/linux-x86.exp
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@@ -37,7 +37,7 @@ run_ld_link_exec_tests [list \
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"Run PR ld/23428 test" \
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"--no-dynamic-linker -z separate-code" \
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"" \
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- { linux-x86.S pr23428.c } \
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+ { linux-x86.S pr23428.c dummy.s } \
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"pr23428" \
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"pass.out" \
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"$NOPIE_CFLAGS -fno-asynchronous-unwind-tables" \
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--
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2.20.1
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