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gas: ensure sections contents is zero for BFD_RELOC_PPC*_TLSM on XCOFF.
AIX ld expects the section contents for relocations BFD_RELOC_PPC_TLSM or BFD_RELOC_PPC64_TLSM to be zero. Actually, it seems to be the case for all the TLS relocations generated by AIX assembly but only these two are mandatory. * config/tc-ppc.c (md_apply_fix): Adjust addend to nullify section contents for BFD_RELOC_PPC_TLSM or BFD_RELOC_PPC64_TLSM. * testsuite/gas/ppc/xcoff-tlsm-32.d: New test. * testsuite/gas/ppc/xcoff-tlsm-64.d: New test. * testsuite/gas/ppc/xcoff-tlsm.s: New test. * testsuite/gas/ppc/aix.exp: Run new tests.
This commit is contained in:
Clément Chigot
committed by
Alan Modra
Alan Modra
parent
7993124ee2
commit
3478a63d7e
@ -1,3 +1,13 @@
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2021-06-17 Clément Chigot <clement.chigot@atos.net>
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* config/tc-ppc.c (md_apply_fix): Adjust addend to nullify
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section contents for BFD_RELOC_PPC_TLSM or
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BFD_RELOC_PPC64_TLSM.
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* testsuite/gas/ppc/xcoff-tlsm-32.d: New test.
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* testsuite/gas/ppc/xcoff-tlsm-64.d: New test.
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* testsuite/gas/ppc/xcoff-tlsm.s: New test.
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* testsuite/gas/ppc/aix.exp: Run new tests.
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2021-06-16 Jan Beulich <jbeulich@suse.com>
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2021-06-16 Jan Beulich <jbeulich@suse.com>
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* read.c (parse_one_float): New.
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* read.c (parse_one_float): New.
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@ -7411,11 +7411,9 @@ md_apply_fix (fixS *fixP, valueT *valP, segT seg)
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symbol_get_bfdsym (fixP->fx_addsy)->flags |= BSF_KEEP;
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symbol_get_bfdsym (fixP->fx_addsy)->flags |= BSF_KEEP;
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}
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}
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#else
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#else
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if (fixP->fx_r_type != BFD_RELOC_PPC_TOC16
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if (fixP->fx_r_type == BFD_RELOC_PPC_TOC16
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&& fixP->fx_r_type != BFD_RELOC_PPC_TOC16_HI
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|| fixP->fx_r_type == BFD_RELOC_PPC_TOC16_HI
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&& fixP->fx_r_type != BFD_RELOC_PPC_TOC16_LO)
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|| fixP->fx_r_type == BFD_RELOC_PPC_TOC16_LO)
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fixP->fx_addnumber = 0;
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else
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{
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{
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/* We want to use the offset within the toc, not the actual VMA
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/* We want to use the offset within the toc, not the actual VMA
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of the symbol. */
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of the symbol. */
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@ -7430,6 +7428,15 @@ md_apply_fix (fixS *fixP, valueT *valP, segT seg)
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/* Set *valP to avoid errors. */
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/* Set *valP to avoid errors. */
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*valP = value;
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*valP = value;
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}
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}
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else if (fixP->fx_r_type == BFD_RELOC_PPC_TLSM
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|| fixP->fx_r_type == BFD_RELOC_PPC64_TLSM)
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/* AIX ld expects the section contents for these relocations
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to be zero. Arrange for that to occur when
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bfd_install_relocation is called. */
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fixP->fx_addnumber = (- bfd_section_vma (S_GET_SEGMENT (fixP->fx_addsy))
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- S_GET_VALUE (fixP->fx_addsy));
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else
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fixP->fx_addnumber = 0;
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#endif
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#endif
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}
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}
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@ -78,4 +78,7 @@ if { [istarget "powerpc*-*-aix*"] || [istarget "rs6000-*-aix*"] } then {
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run_dump_test "xcoff-function-1-32"
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run_dump_test "xcoff-function-1-32"
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run_dump_test "xcoff-function-1-64"
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run_dump_test "xcoff-function-1-64"
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run_dump_test "xcoff-tlsm-32"
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run_dump_test "xcoff-tlsm-64"
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}
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}
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34
gas/testsuite/gas/ppc/xcoff-tlsm-32.d
Normal file
34
gas/testsuite/gas/ppc/xcoff-tlsm-32.d
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@ -0,0 +1,34 @@
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#as: -a32
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#source: xcoff-tlsm.s
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#objdump: -Dr
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#name: XCOFF TLSM relocation (32 bit)
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.*
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Disassembly of section .data:
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00000000 <TOC>:
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0: 00 00 00 10.*
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0: R_TLS foo_tdata-0x10
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00000004 <.foo_tdata>:
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4: 00 00 00 00.*
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4: R_TLSM foo_tdata-0x10
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00000008 <foo_tbss>:
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8: 00 00 00 20.*
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8: R_TLS foo_tbss-0x20
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0000000c <.foo_tbss>:
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c: 00 00 00 00.*
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c: R_TLSM foo_tbss-0x20
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Disassembly of section .tdata:
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00000010 <foo_tdata>:
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10: 00 00 00 01.*
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...
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Disassembly of section .tbss:
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00000020 <foo_tbss>:
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...
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36
gas/testsuite/gas/ppc/xcoff-tlsm-64.d
Normal file
36
gas/testsuite/gas/ppc/xcoff-tlsm-64.d
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@ -0,0 +1,36 @@
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#as: -a64
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#source: xcoff-tlsm.s
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#objdump: -Dr
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#name: XCOFF TLSM relocation (64 bit)
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.*
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Disassembly of section .data:
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0000000000000000 <TOC>:
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0: 00 00 00 00.*
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0: R_TLS foo_tdata-0x20
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4: 00 00 00 20.*
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0000000000000008 <.foo_tdata>:
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...
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8: R_TLSM foo_tdata-0x20
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0000000000000010 <foo_tbss>:
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10: 00 00 00 00.*
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10: R_TLS foo_tbss-0x30
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14: 00 00 00 30.*
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0000000000000018 <.foo_tbss>:
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...
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18: R_TLSM foo_tbss-0x30
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Disassembly of section .tdata:
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0000000000000020 <foo_tdata>:
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20: 00 00 00 01.*
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...
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Disassembly of section .tbss:
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0000000000000030 <foo_tbss>:
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...
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12
gas/testsuite/gas/ppc/xcoff-tlsm.s
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12
gas/testsuite/gas/ppc/xcoff-tlsm.s
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@ -0,0 +1,12 @@
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.csect foo_tdata[TL],4
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.align 2
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foo_tdata:
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.long 1
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.comm foo_tbss[UL],8
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.toc
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.tc foo_tdata[TC],foo_tdata[TL]
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.tc .foo_tdata[TC],foo_tdata[TL]@m
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.tc foo_tbss[TC],foo_tbss[UL]
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.tc .foo_tbss[TC],foo_tbss[UL]@m
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