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| author | Alan Modra <amodra@gmail.com> | 2019-09-04 15:30:37 +0930 |
|---|---|---|
| committer | Alan Modra <amodra@gmail.com> | 2019-09-05 13:56:20 +0930 |
| commit | 77486630b13e9e586b0a1556cba9876a0ede99da (patch) | |
| tree | 161e6fdbc465968b10e3a7be716026b1f6acf33c /ld | |
| parent | 89bdc77eabf5ede68322f6e47e003c1dc45b9ccb (diff) | |
| download | gdb-77486630b13e9e586b0a1556cba9876a0ede99da.zip gdb-77486630b13e9e586b0a1556cba9876a0ede99da.tar.gz gdb-77486630b13e9e586b0a1556cba9876a0ede99da.tar.bz2 | |
R_PPC64_PCREL_OPT
The loads and stores handled in the second instruction of a sequence
marked by R_PPC64_PCREL_OPT may be a prefix instruction. For example:
pld ra,symbol@got@pcrel
0:
pld rt,off(ra)
.reloc 0b-8,R_PPC64_PCREL_OPT,(.-8)-(0b-8)
can be optimised to
pld rt,symbol+off@pcrel
pnop
* elf64-ppc.c (xlate_pcrel_opt): Handle prefix loads and stores
in second instruction.
(ppc64_elf_relocate_section): Likewise.
Diffstat (limited to 'ld')
| -rw-r--r-- | ld/ChangeLog | 6 | ||||
| -rw-r--r-- | ld/testsuite/ld-powerpc/pcrelopt.d | 17 | ||||
| -rw-r--r-- | ld/testsuite/ld-powerpc/pcrelopt.s | 12 |
3 files changed, 30 insertions, 5 deletions
diff --git a/ld/ChangeLog b/ld/ChangeLog index b654eb9..0da9e25 100644 --- a/ld/ChangeLog +++ b/ld/ChangeLog @@ -1,3 +1,9 @@ +2019-09-05 Alan Modra <amodra@gmail.com> + + * testsuite/ld-powerpc/pcrelopt.s, + * testsuite/ld-powerpc/pcrelopt.d: Test offset and prefix in + second instruction. + 2019-08-29 Alan Modra <amodra@gmail.com> PR ld/24406 diff --git a/ld/testsuite/ld-powerpc/pcrelopt.d b/ld/testsuite/ld-powerpc/pcrelopt.d index 18fdb95..aeaa0cd 100644 --- a/ld/testsuite/ld-powerpc/pcrelopt.d +++ b/ld/testsuite/ld-powerpc/pcrelopt.d @@ -80,10 +80,17 @@ Disassembly of section \.text: .*: (04 10 00 01|01 00 10 04) pstxv vs0,66028 .*: (d8 00 01 ec|ec 01 00 d8) .*: (60 00 00 00|00 00 00 60) nop -.*: (04 10 00 01|01 00 10 04) pld r9,66008 -.*: (e5 20 01 d8|d8 01 20 e5) -.*: (e8 09 00 00|00 00 09 e8) ld r0,0\(r9\) +.*: (06 10 00 01|01 00 10 06) plbz r3,70676 +.*: (88 60 14 14|14 14 60 88) +.*: (60 00 00 00|00 00 00 60) nop .*: (60 00 00 00|00 00 00 60) nop -.*: (06 10 00 01|01 00 10 06) pla r7,66000 -.*: (38 e0 01 d0|d0 01 e0 38) +.*: (04 10 12 35|35 12 10 04) plq r4,305485896 +.*: (e0 80 58 48|48 58 80 e0) +.*: (07 00 00 00|00 00 00 07) pnop +.*: (00 00 00 00|00 00 00 00) +.*: (04 10 00 01|01 00 10 04) pld r9,65976 +.*: (e5 20 01 b8|b8 01 20 e5) +.*: (e8 09 00 00|00 00 09 e8) ld r0,0\(r9\) +.*: (06 10 00 01|01 00 10 06) pla r7,65972 +.*: (38 e0 01 b4|b4 01 e0 38) .*: (88 c7 00 00|00 00 c7 88) lbz r6,0\(r7\) diff --git a/ld/testsuite/ld-powerpc/pcrelopt.s b/ld/testsuite/ld-powerpc/pcrelopt.s index 78b0f51..715a52b 100644 --- a/ld/testsuite/ld-powerpc/pcrelopt.s +++ b/ld/testsuite/ld-powerpc/pcrelopt.s @@ -103,6 +103,18 @@ _start: .reloc .-8,R_PPC64_PCREL_OPT,0f-(.-8) 0: stxv 0,0(9) +#offsets are allowed too + pld 9,sym@got@pcrel +0: + lbz 3,0x1234(9) + .reloc 0b-8,R_PPC64_PCREL_OPT,(.-4)-(0b-8) + +#and prefix insns as the second insn + pld 9,sym@got@pcrel +0: + plq 4,0x12345678(9) + .reloc 0b-8,R_PPC64_PCREL_OPT,(.-8)-(0b-8) + # This should not optimize .extern i .type i,@object |