From: Will Newton <will.newton@linaro.org>
To: binutils@sourceware.org
Subject: [PATCH v2] bfd/elfnn-aarch64.c: Fix calculation of DT_RELASZ
Date: Thu, 20 Mar 2014 15:46:00 -0000 [thread overview]
Message-ID: <1395330368-19311-1-git-send-email-will.newton@linaro.org> (raw)
The current code subtracts the size of the output section containing
relplt from RELASZ. In some cases this will be the same output
section as the dynamic relocs causing a value of zero to be output.
Calculating the size from input sections seems to make more sense.
bfd/ChangeLog:
2014-03-20 Will Newton <will.newton@linaro.org>
* elfnn-aarch64.c (elfNN_aarch64_finish_dynamic_sections):
Set value of DT_PLTRELSZ and DT_RELASZ based on the size
of input sections rather than output sections.
ld/testsuite/ChangeLog:
2014-03-20 Will Newton <will.newton@linaro.org>
* ld-aarch64/aarch64-elf.exp: Add relasz dump test.
* ld-aarch64/relasz.d: New file.
* ld-aarch64/relasz.s: Likewise.
---
bfd/elfnn-aarch64.c | 4 ++--
ld/testsuite/ld-aarch64/aarch64-elf.exp | 2 ++
ld/testsuite/ld-aarch64/relasz.d | 18 ++++++++++++++++++
ld/testsuite/ld-aarch64/relasz.s | 9 +++++++++
4 files changed, 31 insertions(+), 2 deletions(-)
create mode 100644 ld/testsuite/ld-aarch64/relasz.d
create mode 100644 ld/testsuite/ld-aarch64/relasz.s
Changes in v2:
- Add testcase
diff --git a/bfd/elfnn-aarch64.c b/bfd/elfnn-aarch64.c
index c2adcc9..638938d 100644
--- a/bfd/elfnn-aarch64.c
+++ b/bfd/elfnn-aarch64.c
@@ -6993,7 +6993,7 @@ elfNN_aarch64_finish_dynamic_sections (bfd *output_bfd,
break;
case DT_PLTRELSZ:
- s = htab->root.srelplt->output_section;
+ s = htab->root.srelplt;
dyn.d_un.d_val = s->size;
break;
@@ -7007,7 +7007,7 @@ elfNN_aarch64_finish_dynamic_sections (bfd *output_bfd,
about changing the DT_RELA entry. */
if (htab->root.srelplt != NULL)
{
- s = htab->root.srelplt->output_section;
+ s = htab->root.srelplt;
dyn.d_un.d_val -= s->size;
}
break;
diff --git a/ld/testsuite/ld-aarch64/aarch64-elf.exp b/ld/testsuite/ld-aarch64/aarch64-elf.exp
index 32cf73a..845ea20 100644
--- a/ld/testsuite/ld-aarch64/aarch64-elf.exp
+++ b/ld/testsuite/ld-aarch64/aarch64-elf.exp
@@ -157,3 +157,5 @@ run_dump_test "ifunc-19b"
run_dump_test "ifunc-20"
run_dump_test "ifunc-21"
run_dump_test "ifunc-22"
+
+run_dump_test "relasz"
diff --git a/ld/testsuite/ld-aarch64/relasz.d b/ld/testsuite/ld-aarch64/relasz.d
new file mode 100644
index 0000000..5cc5595
--- /dev/null
+++ b/ld/testsuite/ld-aarch64/relasz.d
@@ -0,0 +1,18 @@
+#source: relasz.s
+#ld: -shared -Taarch64.ld
+#readelf: -d
+# Check that the RELASZ section has the correct size even if we are
+# using a non-default linker script that merges .rela.dyn and .rela.plt
+# in the output.
+
+Dynamic section at offset 0x[0-9a-f]+ contains 9 entries:
+ Tag Type Name/Value
+ 0x0000000000000004 \(HASH\) 0x[0-9a-f]+
+ 0x0000000000000005 \(STRTAB\) 0x[0-9a-f]+
+ 0x0000000000000006 \(SYMTAB\) 0x[0-9a-f]+
+ 0x000000000000000a \(STRSZ\) [0-9]+ \(bytes\)
+ 0x000000000000000b \(SYMENT\) [0-9]+ \(bytes\)
+ 0x0000000000000007 \(RELA\) 0x[0-9a-f]+
+ 0x0000000000000008 \(RELASZ\) 24 \(bytes\)
+ 0x0000000000000009 \(RELAENT\) 24 \(bytes\)
+ 0x0000000000000000 \(NULL\) 0x0
diff --git a/ld/testsuite/ld-aarch64/relasz.s b/ld/testsuite/ld-aarch64/relasz.s
new file mode 100644
index 0000000..8c7f891
--- /dev/null
+++ b/ld/testsuite/ld-aarch64/relasz.s
@@ -0,0 +1,9 @@
+ .text
+ .global func
+ .type func, %function
+func:
+ adrp x0, :got:foo
+ ldr x0, [x0, #:got_lo12:foo]
+ ldr w0, [x0]
+ ret
+ .size func, .-func
--
1.8.1.4
next reply other threads:[~2014-03-20 15:46 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-03-20 15:46 Will Newton [this message]
2014-03-20 17:57 ` Jiong Wang
2014-03-24 8:49 ` Will Newton
2014-03-24 12:26 ` Marcus Shawcroft
2014-03-24 13:39 ` Alan Modra
2014-03-25 7:39 ` Marcus Shawcroft
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