https://sourceware.org/bugzilla/show_bug.cgi?id=20179
Bug ID: 20179
Summary: ld -pie -z text errors out for SPARC TLS objects:
read-only segment has dynamic relocations
Product: binutils
Version: 2.26
Status: NEW
Severity: normal
Priority: P2
Component: ld
Assignee: unassigned at sourceware dot org
Reporter: ro at gcc dot gnu.org
Target Milestone: ---
Host: sparc*-sun-solaris2.*
Target: sparc*-sun-solaris2.*
Build: sparc*-sun-solaris2.*
Created attachment 9296
--> https://sourceware.org/bugzilla/attachment.cgi?id=9296&action=edit
input object
When running the gcc testsuite on Solaris 12 with gas and gld, the PIE tests
FAIL with a gld error:
FAIL: gcc.dg/torture/tls/run-le.c -O0 -pie -fpie (test for excess errors)
Excess errors:
/vol/gcc/bin/gld-2.26: read-only segment has dynamic relocations.
The failure can be reproduced with
$ gld-2.26 -pie -z text -o run-le.exe run-le.o -lc
gld-2.26: warning: cannot find entry symbol _start; defaulting to
0000000000000330
gld-2.26: read-only segment has dynamic relocations.
Linking the exact same object with /bin/ld works just fine:
$ ld -z type=pie -z text -o run-le.exe run-le.o -lc
Checking which symbols triggers setting DT_TEXTREL, I find that tls_le is the
culprit:
$ elfdump -s run-le.o|grep tls_le
[7] 0 0x4 TLS GLOB D 0 .tdata tls_le
$ elfdump -r run-le.o
Relocation Section: .rela.text
index type offset value addend section symbol
[0] R_SPARC_TLS_LE_HIX22 0x4 0 0 .text tls_le
[1] R_SPARC_TLS_LE_LOX10 0x8 0 0 .text tls_le
[2] R_SPARC_TLS_LE_HIX22 0x20 0 0 .text tls_le
[3] R_SPARC_TLS_LE_LOX10 0x24 0 0 .text tls_le
However, the situation on Solaris/x86 is similar
$ elfdump -s run-le.o|grep tls_le
[11] 0 0x4 TLS GLOB D 0 .tdata tls_le
$ elfdump -r run-le.o |grep tls_le
[2] R_386_TLS_LE 0x15 0 .text tls_le
[5] R_386_TLS_LE 0x31 0 .text tls_le
and yet the warning doesn't trigger.
Rainer
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