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| author | Szabolcs Nagy <szabolcs.nagy@arm.com> | 2015-07-27 11:45:27 +0100 |
|---|---|---|
| committer | Szabolcs Nagy <szabolcs.nagy@arm.com> | 2015-07-27 11:45:27 +0100 |
| commit | b68a20d6675f1360ea4db50a9835c073675b9889 (patch) | |
| tree | 04c4b525cdd838ddd3bdd0cf0bfad8cb1157aad1 /ld | |
| parent | 0c096ed760273eb364d2e4e6def21f688ceff525 (diff) | |
| download | gdb-b68a20d6675f1360ea4db50a9835c073675b9889.zip gdb-b68a20d6675f1360ea4db50a9835c073675b9889.tar.gz gdb-b68a20d6675f1360ea4db50a9835c073675b9889.tar.bz2 | |
[ARM] Fix extern protected data handling
Emit *GLOB_DAT instead of *RELATIVE relocs for protected data
in shared objects.
This is needed for the fix of glibc bug 17711:
https://sourceware.org/bugzilla/show_bug.cgi?id=17711
bfd:
PR ld/18705
* elf32-arm.c (elf_backend_extern_protected_data): Define.
ld/testsuite:
PR ld/18705
* ld-arm/protected-data.d: New.
* ld-arm/protected-data.s: New.
* ld-arm/arm-elf.exp: Add new test.
Diffstat (limited to 'ld')
| -rw-r--r-- | ld/testsuite/ChangeLog | 7 | ||||
| -rw-r--r-- | ld/testsuite/ld-arm/arm-elf.exp | 1 | ||||
| -rw-r--r-- | ld/testsuite/ld-arm/protected-data.d | 4 | ||||
| -rw-r--r-- | ld/testsuite/ld-arm/protected-data.s | 29 |
4 files changed, 41 insertions, 0 deletions
diff --git a/ld/testsuite/ChangeLog b/ld/testsuite/ChangeLog index de0ad1b..734fe69 100644 --- a/ld/testsuite/ChangeLog +++ b/ld/testsuite/ChangeLog @@ -1,3 +1,10 @@ +2015-07-27 Szabolcs Nagy <szabolcs.nagy@arm.com> + + PR ld/18705 + * ld-arm/protected-data.d: New. + * ld-arm/protected-data.s: New. + * ld-arm/arm-elf.exp: Add new test. + 2015-07-26 H.J. Lu <hongjiu.lu@intel.com> PR ld/18718 diff --git a/ld/testsuite/ld-arm/arm-elf.exp b/ld/testsuite/ld-arm/arm-elf.exp index 28b41ca..882f5cb 100644 --- a/ld/testsuite/ld-arm/arm-elf.exp +++ b/ld/testsuite/ld-arm/arm-elf.exp @@ -904,3 +904,4 @@ if { ![istarget "arm*-*-nacl*"] } { } run_dump_test "unresolved-2" run_dump_test "gc-hidden-1" +run_dump_test "protected-data" diff --git a/ld/testsuite/ld-arm/protected-data.d b/ld/testsuite/ld-arm/protected-data.d new file mode 100644 index 0000000..51c51c6 --- /dev/null +++ b/ld/testsuite/ld-arm/protected-data.d @@ -0,0 +1,4 @@ +#ld: -shared +#readelf: -r -W +#... +.* R_ARM_GLOB_DAT .* var.* diff --git a/ld/testsuite/ld-arm/protected-data.s b/ld/testsuite/ld-arm/protected-data.s new file mode 100644 index 0000000..8c8072d --- /dev/null +++ b/ld/testsuite/ld-arm/protected-data.s @@ -0,0 +1,29 @@ + .syntax unified + + .data + .protected var + .global var + .align 2 + .type var, %object + .size var, 4 +var: + .word 1 + + .text + .align 2 + .global getaddr + .thumb + .thumb_func + .type getaddr, %function +getaddr: + ldr r3, 2f + ldr r2, 2f+4 +1: + add r3, pc + ldr r0, [r3, r2] + bx lr + .align 2 +2: + .word _GLOBAL_OFFSET_TABLE_-(1b+4) + .word var(GOT) + .size getaddr, .-getaddr |