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| author | Alan Modra <amodra@gmail.com> | 2014-06-16 09:56:29 +0930 |
|---|---|---|
| committer | Alan Modra <amodra@gmail.com> | 2014-06-16 12:26:38 +0930 |
| commit | 4b1a927e92e49f333838f8f11e621608cccb3a03 (patch) | |
| tree | 789d466a32bb13584a9809113e3079eb7380175a /gas | |
| parent | 44ed9ef26f62c4b348236c4dcea1de78d03900d9 (diff) | |
| download | gdb-4b1a927e92e49f333838f8f11e621608cccb3a03.zip gdb-4b1a927e92e49f333838f8f11e621608cccb3a03.tar.gz gdb-4b1a927e92e49f333838f8f11e621608cccb3a03.tar.bz2 | |
Fix uninitialised ARM data
MALLOC_PERTURB_=1 results in "FAIL: PIC" on arm-vxworks, due to garbage
in words with got relocs.
* config/tc-arm.c (s_arm_elf_cons): Initialise after frag_more.
(md_apply_fix): Delete now unnecessary zeroing for BFD_RELOC_ARM_GOT*
and BFD_RELOC_ARM_TLS* relocs. Simplify BFD_RELOC_8 case.
Diffstat (limited to 'gas')
| -rw-r--r-- | gas/ChangeLog | 6 | ||||
| -rw-r--r-- | gas/config/tc-arm.c | 12 |
2 files changed, 10 insertions, 8 deletions
diff --git a/gas/ChangeLog b/gas/ChangeLog index 953130a3..383393b 100644 --- a/gas/ChangeLog +++ b/gas/ChangeLog @@ -1,5 +1,11 @@ 2014-06-16 Alan Modra <amodra@gmail.com> + * config/tc-arm.c (s_arm_elf_cons): Initialise after frag_more. + (md_apply_fix): Delete now unnecessary zeroing for BFD_RELOC_ARM_GOT* + and BFD_RELOC_ARM_TLS* relocs. Simplify BFD_RELOC_8 case. + +2014-06-16 Alan Modra <amodra@gmail.com> + * config/tc-cris.c (md_create_long_jump): Follow "short" jump with a nop rather than leaving uninitialised. diff --git a/gas/config/tc-arm.c b/gas/config/tc-arm.c index 590855c..fc86db4 100644 --- a/gas/config/tc-arm.c +++ b/gas/config/tc-arm.c @@ -3453,7 +3453,8 @@ s_arm_elf_cons (int nbytes) memcpy (base, save_buf, p - base); offset = nbytes - size; - p = frag_more ((int) nbytes); + p = frag_more (nbytes); + memset (p, 0, nbytes); fix_new_exp (frag_now, p - frag_now->fr_literal + offset, size, &exp, 0, (enum bfd_reloc_code_real) reloc); } @@ -22384,7 +22385,7 @@ md_apply_fix (fixS * fixP, case BFD_RELOC_8: if (fixP->fx_done || !seg->use_rela_p) - md_number_to_chars (buf, value, 1); + *buf = value; break; case BFD_RELOC_16: @@ -22397,9 +22398,6 @@ md_apply_fix (fixS * fixP, case BFD_RELOC_ARM_THM_TLS_CALL: case BFD_RELOC_ARM_TLS_DESCSEQ: case BFD_RELOC_ARM_THM_TLS_DESCSEQ: - S_SET_THREAD_LOCAL (fixP->fx_addsy); - break; - case BFD_RELOC_ARM_TLS_GOTDESC: case BFD_RELOC_ARM_TLS_GD32: case BFD_RELOC_ARM_TLS_LE32: @@ -22407,12 +22405,10 @@ md_apply_fix (fixS * fixP, case BFD_RELOC_ARM_TLS_LDM32: case BFD_RELOC_ARM_TLS_LDO32: S_SET_THREAD_LOCAL (fixP->fx_addsy); - /* fall through */ + break; case BFD_RELOC_ARM_GOT32: case BFD_RELOC_ARM_GOTOFF: - if (fixP->fx_done || !seg->use_rela_p) - md_number_to_chars (buf, 0, 4); break; case BFD_RELOC_ARM_GOT_PREL: |