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9e7028aa1e
This implements register saving and restoring in the __tls_get_addr call stub, so that when glibc supports the optimized tls call stub gcc can generate code that assumes only r0, r12 and of course r3 are changed on a __tls_get_addr call. When gcc expects __tls_get_addr calls to preserve registers the call will be to __tls_get_addr_desc, which will be translated by the linker to a call to __tls_get_addr_opt. bfd/ * elf64-ppc.h (struct ppc64_elf_params): Add no_tls_get_addr_regsave. * elf64-ppc.c (struct ppc_link_hash_table): Add tga_desc and tga_desc_fd. (is_tls_get_addr): Match tga_desc and tga_desc_df too. (STDU_R1_0R1, ADDI_R1_R1): Define. (tls_get_addr_prologue, tls_get_addr_epilogue): New functions. (ppc64_elf_tls_setup): Set up tga_desc and tga_desc_fd. Indirect tga_desc_fd to opt_fd, and tga_desc to opt. Set no_tls_get_addr_regsave. (branch_reloc_hash_match): Add hash3 and hash4. (ppc64_elf_tls_optimize): Handle tga_desc_fd and tga_desc too. (ppc64_elf_size_dynamic_sections): Likewise. (ppc64_elf_relocate_section): Likewise. (plt_stub_size, build_plt_stub): Likewise. Size regsave __tls_get_addr stub. (build_tls_get_addr_stub): Build regsave __tls_get_addr stub and eh_frame. (ppc_size_one_stub): Handle tga_desc_fd and tga_desc too. Size eh_frame for regsave __tls_get_addr. gas/ * config/tc-ppc.c (parse_tls_arg): Handle tls arg for __tls_get_addr_desc and __tls_get_addr_opt. ld/ * emultempl/ppc64elf.em (ppc64_opt, PARSE_AND_LIST_LONGOPTS), (PARSE_AND_LIST_OPTIONS, PARSE_AND_LIST_ARGS_CASES): Support --tls-get-addr-regsave and --no-tls-get-addr-regsave. (params): Init new field. * ld.texi (--tls-get-addr-regsave, --no-tls-get-addr-regsave): Document. * testsuite/ld-powerpc/tlsdesc.s, * testsuite/ld-powerpc/tlsdesc.d, * testsuite/ld-powerpc/tlsdesc.wf, * testsuite/ld-powerpc/tlsdesc2.d, * testsuite/ld-powerpc/tlsdesc2.wf, * testsuite/ld-powerpc/tlsexenors.d, * testsuite/ld-powerpc/tlsexenors.r, * testsuite/ld-powerpc/tlsexers.d, * testsuite/ld-powerpc/tlsexers.r, * testsuite/ld-powerpc/tlsexetocnors.d, * testsuite/ld-powerpc/tlsexetocrs.d, * testsuite/ld-powerpc/tlsexetocrs.r, * testsuite/ld-powerpc/tlsopt6.d, * testsuite/ld-powerpc/tlsopt6.wf: New. * testsuite/ld-powerpc/powerpc.exp: Run new tests.
114 lines
3.6 KiB
R
114 lines
3.6 KiB
R
#source: tls.s
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#source: tlslib.s
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#as: -a64
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#ld: --no-tls-optimize
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#readelf: -WSsrl
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#target: powerpc64*-*-*
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There are [0-9]+ section headers, starting at offset 0x[0-9a-f]+:
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Section Headers:
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+\[Nr\] Name +Type +Address +Off +Size +ES Flg Lk Inf Al
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+\[[ 0-9]+\] +NULL +0+ 0+ 0+ 0+ +0 +0 +0
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+\[[ 0-9]+\] \.rela\.dyn +.*
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+\[[ 0-9]+\] \.rela\.plt +.*
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+\[[ 0-9]+\] \.opd .*
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#...
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Elf file type is EXEC \(Executable file\)
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Entry point .*
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Program Headers:
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+Type +Offset +VirtAddr +PhysAddr +FileSiz +MemSiz +Flg Align
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+TLS .* 0x0+38 0x0+70 R +0x8
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Section to Segment mapping:
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+0+ +
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+01 +\.interp *
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+04 +\.dynamic *
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+05 +\.tdata \.tbss *
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Relocation section '\.rela\.dyn' at offset .* contains 3 entries:
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+Offset +Info +Type +Symbol's Value +Symbol's Name \+ Addend
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[0-9a-f ]+R_PPC64_DTPMOD64 +0+ gd \+ 0
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[0-9a-f ]+R_PPC64_DTPREL64 +0+ gd \+ 0
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[0-9a-f ]+R_PPC64_DTPMOD64 +0+ ld \+ 0
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Relocation section '\.rela\.plt' at offset .* contains 1 entry:
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+Offset +Info +Type +Symbol's Value +Symbol's Name \+ Addend
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[0-9a-f ]+R_PPC64_JMP_SLOT +0+ __tls_get_addr_opt \+ 0
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Symbol table '\.dynsym' contains [0-9]+ entries:
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+Num: +Value +Size +Type +Bind +Vis +Ndx +Name
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.* NOTYPE +LOCAL +DEFAULT +UND *
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.* TLS +GLOBAL +DEFAULT +UND gd
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.* TLS +GLOBAL +DEFAULT +UND ld
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.* FUNC +GLOBAL +DEFAULT +UND __tls_get_addr_opt
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Symbol table '\.symtab' contains [0-9]+ entries:
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.* FILE +LOCAL +DEFAULT +ABS .*
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.* NOTYPE +LOCAL +DEFAULT +ABS TLSMARK
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.* TLS +LOCAL +DEFAULT +8 gd4
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.* TLS +LOCAL +DEFAULT +8 ld4
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.* TLS +LOCAL +DEFAULT +8 ld5
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.* TLS +LOCAL +DEFAULT +8 ld6
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.* TLS +LOCAL +DEFAULT +8 ie4
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.* TLS +LOCAL +DEFAULT +8 le4
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.* TLS +LOCAL +DEFAULT +8 le5
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.* FILE +LOCAL +DEFAULT +ABS
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.* OBJECT +LOCAL +DEFAULT +10 _DYNAMIC
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.* NOTYPE +LOCAL +DEFAULT +7 __glink_PLTresolve
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.* NOTYPE +LOCAL +DEFAULT +7 .*\.plt_call\.__tls_get_addr(|_opt)
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.* GLOBAL +DEFAULT +UND gd
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.* GLOBAL +DEFAULT +9 le0
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.* GLOBAL +DEFAULT +9 ld0
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.* GLOBAL +DEFAULT +9 le1
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.* GLOBAL +DEFAULT +UND ld
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.* FUNC +GLOBAL +DEFAULT +11 _start
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.* TLS +GLOBAL +DEFAULT +9 ld2
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.* TLS +GLOBAL +DEFAULT +9 ld1
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.* NOTYPE +GLOBAL +DEFAULT +13 __bss_start
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.* FUNC +GLOBAL +DEFAULT +UND __tls_get_addr_opt
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.* NOTYPE +GLOBAL +DEFAULT +13 _edata
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.* NOTYPE +GLOBAL +DEFAULT +13 _end
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.* TLS +GLOBAL +DEFAULT +9 gd0
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.* TLS +GLOBAL +DEFAULT +9 ie0
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