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.
51 lines
1.2 KiB
Plaintext
51 lines
1.2 KiB
Plaintext
Contents of the \.eh_frame section:
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0+ 0+10 0+ CIE
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Version: 1
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Augmentation: "zR"
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Code alignment factor: 4
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Data alignment factor: -8
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Return address column: 65
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Augmentation data: 1b
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DW_CFA_def_cfa: r1 ofs 0
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0+14 0+34 0+18 FDE cie=0+ pc=0+240\.\.0+2e0
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DW_CFA_advance_loc: 72 to 0+288
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DW_CFA_def_cfa_offset: 128
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DW_CFA_offset_extended_sf: r65 at cfa\+16
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DW_CFA_offset: r4 at cfa-72
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DW_CFA_offset: r5 at cfa-64
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DW_CFA_offset: r6 at cfa-56
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DW_CFA_offset: r7 at cfa-48
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DW_CFA_offset: r8 at cfa-40
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DW_CFA_offset: r9 at cfa-32
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DW_CFA_offset: r10 at cfa-24
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DW_CFA_offset: r11 at cfa-16
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DW_CFA_advance_loc: 68 to 0+2cc
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DW_CFA_def_cfa_offset: 0
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DW_CFA_restore: r4
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DW_CFA_restore: r5
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DW_CFA_restore: r6
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DW_CFA_restore: r7
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DW_CFA_restore: r8
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DW_CFA_restore: r9
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DW_CFA_restore: r10
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DW_CFA_restore: r11
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DW_CFA_advance_loc: 8 to 0+2d4
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DW_CFA_restore_extended: r65
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DW_CFA_nop
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DW_CFA_nop
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0+4c 0+14 0+50 FDE cie=0+ pc=0+2f8\.\.0+32c
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DW_CFA_advance_loc: 4 to 0+2fc
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DW_CFA_register: r65 in r12
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DW_CFA_advance_loc: 20 to 0+310
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DW_CFA_restore_extended: r65
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0+64 0+10 0+68 FDE cie=0+ pc=0+2e0\.\.0+2ec
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DW_CFA_nop
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DW_CFA_nop
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DW_CFA_nop
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