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| author | Andreas Krebbel <Andreas.Krebbel@de.ibm.com> | 2012-02-17 08:38:06 +0000 |
|---|---|---|
| committer | Andreas Krebbel <Andreas.Krebbel@de.ibm.com> | 2012-02-17 08:38:06 +0000 |
| commit | d0ddfe27502fccf0e608a0f6080e8075847399b6 (patch) | |
| tree | e038f71d25647fd2e988736ae492fd5ba6202d34 /bfd/elf32-s390.c | |
| parent | 980bb25303b2a59b6e46dd0536ede7d39d536e85 (diff) | |
| download | gdb-d0ddfe27502fccf0e608a0f6080e8075847399b6.zip gdb-d0ddfe27502fccf0e608a0f6080e8075847399b6.tar.gz gdb-d0ddfe27502fccf0e608a0f6080e8075847399b6.tar.bz2 | |
2012-02-17 Andreas Krebbel <Andreas.Krebbel@de.ibm.com>
* elf32-s390.c (elf_s390_relocate_section): Support basr in the
GD->LE and LD->LE optimizations.
Diffstat (limited to 'bfd/elf32-s390.c')
| -rw-r--r-- | bfd/elf32-s390.c | 32 |
1 files changed, 26 insertions, 6 deletions
diff --git a/bfd/elf32-s390.c b/bfd/elf32-s390.c index bb58670..85a20bd 100644 --- a/bfd/elf32-s390.c +++ b/bfd/elf32-s390.c @@ -2919,11 +2919,18 @@ elf_s390_relocate_section (output_bfd, info, input_bfd, input_section, insn = bfd_get_32 (input_bfd, contents + rel->r_offset); if ((insn & 0xff000fff) != 0x4d000000 && - (insn & 0xffff0000) != 0xc0e50000) + (insn & 0xffff0000) != 0xc0e50000 && + (insn & 0xff000000) != 0x0d000000) invalid_tls_insn (input_bfd, input_section, rel); if (!info->shared && (h == NULL || h->dynindx == -1)) { - if ((insn & 0xff000000) == 0x4d000000) + if ((insn & 0xff000000) == 0x0d000000) + { + /* GD->LE transition. + basr rx, ry -> nopr r7 */ + insn = 0x07070000 | (insn & 0xffff); + } + else if ((insn & 0xff000000) == 0x4d000000) { /* GD->LE transition. bas %r14,0(%rx,%r13) -> bc 0,0 */ @@ -2932,7 +2939,7 @@ elf_s390_relocate_section (output_bfd, info, input_bfd, input_section, else { /* GD->LE transition. - brasl %r14,_tls_get_addr@plt -> brcl 0,. */ + brasl %r14,_tls_get_offset@plt -> brcl 0,. */ insn = 0xc0040000; bfd_put_16 (output_bfd, 0x0000, contents + rel->r_offset + 4); @@ -2940,6 +2947,11 @@ elf_s390_relocate_section (output_bfd, info, input_bfd, input_section, } else { + /* If basr is used in the pic case to invoke + _tls_get_offset, something went wrong before. */ + if ((insn & 0xff000000) == 0x0d000000) + invalid_tls_insn (input_bfd, input_section, rel); + if ((insn & 0xff000000) == 0x4d000000) { /* GD->IE transition. @@ -2966,9 +2978,17 @@ elf_s390_relocate_section (output_bfd, info, input_bfd, input_section, insn = bfd_get_32 (input_bfd, contents + rel->r_offset); if ((insn & 0xff000fff) != 0x4d000000 && - (insn & 0xffff0000) != 0xc0e50000) + (insn & 0xffff0000) != 0xc0e50000 && + (insn & 0xff000000) != 0x0d000000) invalid_tls_insn (input_bfd, input_section, rel); - if ((insn & 0xff000000) == 0x4d000000) + + if ((insn & 0xff000000) == 0x0d000000) + { + /* LD->LE transition. + basr rx, ry -> nopr r7 */ + insn = 0x07070000 | (insn & 0xffff); + } + else if ((insn & 0xff000000) == 0x4d000000) { /* LD->LE transition. bas %r14,0(%rx,%r13) -> bc 0,0 */ @@ -2977,7 +2997,7 @@ elf_s390_relocate_section (output_bfd, info, input_bfd, input_section, else { /* LD->LE transition. - brasl %r14,__tls_get_addr@plt -> brcl 0,. */ + brasl %r14,__tls_get_offset@plt -> brcl 0,. */ insn = 0xc0040000; bfd_put_16 (output_bfd, 0x0000, contents + rel->r_offset + 4); |