mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-09 04:21:49 +08:00
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.
105 lines
4.2 KiB
Makefile
105 lines
4.2 KiB
Makefile
#source: tls.s
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#as: -a64
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#ld: tmpdir/libtlslib.so
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#objdump: -dr
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#target: powerpc64*-*-*
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.*
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Disassembly of section \.text:
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.* <.*plt_call\.__tls_get_addr(|_opt)>:
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.* (e8 03 00 00|00 00 03 e8) ld r0,0\(r3\)
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.* (e9 83 00 08|08 00 83 e9) ld r12,8\(r3\)
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.* (2c 20 00 00|00 00 20 2c) cmpdi r0,0
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.* (7c 60 1b 78|78 1b 60 7c) mr r0,r3
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.* (7c 6c 6a 14|14 6a 6c 7c) add r3,r12,r13
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.* (4d 82 00 20|20 00 82 4d) beqlr *
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.* (7c 03 03 78|78 03 03 7c) mr r3,r0
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.* (7c 08 02 a6|a6 02 08 7c) mflr r0
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.* (f8 01 00 10|10 00 01 f8) std r0,16\(r1\)
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.* (f8 81 ff b8|b8 ff 81 f8) std r4,-72\(r1\)
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.* (f8 a1 ff c0|c0 ff a1 f8) std r5,-64\(r1\)
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.* (f8 c1 ff c8|c8 ff c1 f8) std r6,-56\(r1\)
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.* (f8 e1 ff d0|d0 ff e1 f8) std r7,-48\(r1\)
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.* (f9 01 ff d8|d8 ff 01 f9) std r8,-40\(r1\)
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.* (f9 21 ff e0|e0 ff 21 f9) std r9,-32\(r1\)
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.* (f9 41 ff e8|e8 ff 41 f9) std r10,-24\(r1\)
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.* (f9 61 ff f0|f0 ff 61 f9) std r11,-16\(r1\)
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.* (f8 21 ff 81|81 ff 21 f8) stdu r1,-128\(r1\)
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.* (f8 41 00 28|28 00 41 f8) std r2,40\(r1\)
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.* (e9 82 80 48|48 80 82 e9) ld r12,-32696\(r2\)
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.* (7d 89 03 a6|a6 03 89 7d) mtctr r12
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.* (e8 42 80 50|50 80 42 e8) ld r2,-32688\(r2\)
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.* (4e 80 04 21|21 04 80 4e) bctrl
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.* (e8 41 00 28|28 00 41 e8) ld r2,40\(r1\)
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.* (e8 81 00 38|38 00 81 e8) ld r4,56\(r1\)
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.* (e8 a1 00 40|40 00 a1 e8) ld r5,64\(r1\)
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.* (e8 c1 00 48|48 00 c1 e8) ld r6,72\(r1\)
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.* (e8 e1 00 50|50 00 e1 e8) ld r7,80\(r1\)
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.* (e9 01 00 58|58 00 01 e9) ld r8,88\(r1\)
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.* (e9 21 00 60|60 00 21 e9) ld r9,96\(r1\)
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.* (e9 41 00 68|68 00 41 e9) ld r10,104\(r1\)
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.* (e9 61 00 70|70 00 61 e9) ld r11,112\(r1\)
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.* (38 21 00 80|80 00 21 38) addi r1,r1,128
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.* (e8 01 00 10|10 00 01 e8) ld r0,16\(r1\)
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.* (7c 08 03 a6|a6 03 08 7c) mtlr r0
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.* (4e 80 00 20|20 00 80 4e) blr
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.* <._start>:
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.* (e8 62 80 10|10 80 62 e8) ld r3,-32752\(r2\)
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.* (7c 63 6a 14|14 6a 63 7c) add r3,r3,r13
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.* (60 00 00 00|00 00 00 60) nop
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.* (38 62 80 18|18 80 62 38) addi r3,r2,-32744
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.* (4b ff ff 61|61 ff ff 4b) bl .*
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.* (60 00 00 00|00 00 00 60) nop
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.* (60 00 00 00|00 00 00 60) nop
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.* (38 6d 90 38|38 90 6d 38) addi r3,r13,-28616
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.* (60 00 00 00|00 00 00 60) nop
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.* (60 00 00 00|00 00 00 60) nop
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.* (38 6d 10 00|00 10 6d 38) addi r3,r13,4096
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.* (60 00 00 00|00 00 00 60) nop
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.* (39 23 80 40|40 80 23 39) addi r9,r3,-32704
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.* (3d 23 00 00|00 00 23 3d) addis r9,r3,0
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.* (81 49 80 48|48 80 49 81) lwz r10,-32696\(r9\)
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.* (e9 22 80 28|28 80 22 e9) ld r9,-32728\(r2\)
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.* (7d 49 18 2a|2a 18 49 7d) ldx r10,r9,r3
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.* (60 00 00 00|00 00 00 60) nop
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.* (a1 4d 90 58|58 90 4d a1) lhz r10,-28584\(r13\)
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.* (89 4d 90 60|60 90 4d 89) lbz r10,-28576\(r13\)
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.* (60 00 00 00|00 00 00 60) nop
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.* (99 4d 90 68|68 90 4d 99) stb r10,-28568\(r13\)
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.* (60 00 00 00|00 00 00 60) nop
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.* (38 6d 90 00|00 90 6d 38) addi r3,r13,-28672
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.* (60 00 00 00|00 00 00 60) nop
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.* (60 00 00 00|00 00 00 60) nop
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.* (38 6d 10 00|00 10 6d 38) addi r3,r13,4096
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.* (60 00 00 00|00 00 00 60) nop
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.* (f9 43 80 08|08 80 43 f9) std r10,-32760\(r3\)
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.* (3d 23 00 00|00 00 23 3d) addis r9,r3,0
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.* (91 49 80 10|10 80 49 91) stw r10,-32752\(r9\)
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.* (e9 22 80 08|08 80 22 e9) ld r9,-32760\(r2\)
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.* (7d 49 19 2a|2a 19 49 7d) stdx r10,r9,r3
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.* (60 00 00 00|00 00 00 60) nop
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.* (b1 4d 90 58|58 90 4d b1) sth r10,-28584\(r13\)
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.* (e9 4d 90 2a|2a 90 4d e9) lwa r10,-28632\(r13\)
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.* (60 00 00 00|00 00 00 60) nop
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.* (a9 4d 90 30|30 90 4d a9) lha r10,-28624\(r13\)
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.* (00 00 00 00|38 02 01 00) .*
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.* (00 01 02 38|00 00 00 00) .*
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.* <__glink_PLTresolve>:
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.* (7d 88 02 a6|a6 02 88 7d) mflr r12
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.* (42 9f 00 05|05 00 9f 42) bcl 20,4\*cr7\+so,.*
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.* (7d 68 02 a6|a6 02 68 7d) mflr r11
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.* (e8 4b ff f0|f0 ff 4b e8) ld r2,-16\(r11\)
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.* (7d 88 03 a6|a6 03 88 7d) mtlr r12
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.* (7d 62 5a 14|14 5a 62 7d) add r11,r2,r11
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.* (e9 8b 00 00|00 00 8b e9) ld r12,0\(r11\)
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.* (e8 4b 00 08|08 00 4b e8) ld r2,8\(r11\)
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.* (7d 89 03 a6|a6 03 89 7d) mtctr r12
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.* (e9 6b 00 10|10 00 6b e9) ld r11,16\(r11\)
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.* (4e 80 04 20|20 04 80 4e) bctr
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.* <__tls_get_addr_opt@plt>:
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.* (38 00 00 00|00 00 00 38) li r0,0
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.* (4b ff ff d0|d0 ff ff 4b) b .*
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