From b7e215a8ee81d44281d9e0a2a25eceb47b6911dd Mon Sep 17 00:00:00 2001 From: Indu Bhagat Date: Thu, 20 May 2021 11:15:52 -0700 Subject: CTF/BTF debug formats This commit introduces support for generating CTF debugging information and BTF debugging information from GCC. 2021-06-28 Indu Bhagat David Faust Jose E. Marchesi Weimin Pan gcc/ * Makefile.in: Add ctfc.*, ctfout.c and btfout.c files to GTFILES. Add new object files. * common.opt: Add CTF and BTF debug info options. * btfout.c: New file. * ctfc.c: Likewise. * ctfc.h: Likewise. * ctfout.c: Likewise. * dwarf2ctf.c: Likewise. * dwarf2ctf.h: Likewise. * dwarf2cfi.c (dwarf2out_do_frame): Acknowledge CTF_DEBUG and BTF_DEBUG. * dwarf2out.c (dwarf2out_source_line): Likewise. (dwarf2out_finish): Skip emitting DWARF if CTF or BTF are to be generated. (debug_format_do_cu): New function. (dwarf2out_early_finish): Traverse DIEs and emit CTF/BTF for them if requested. Include dwarf2ctf.c. * final.c (dwarf2_debug_info_emitted_p): Acknowledge DWARF-based debug formats. * flag-types.h (enum debug_info_type): Add CTF_DEBUG and BTF_DEBUG. (CTF_DEBUG): New bitmask. (BTF_DEBUG): Likewise. (enum ctf_debug_info_levels): New enum. * gengtype.c (open_base_files): Handle ctfc.h. (main): Handle uint32_t type. * flags.h (btf_debuginfo_p): New definition. (dwarf_based_debuginfo_p): Likewise. * opts.c (debug_type_names): Add entries for CTF and BTF. (btf_debuginfo_p): New function. (dwarf_based_debuginfo_p): Likewise. (common_handle_option): Handle -gctfN and -gbtf options. (set_debug_level): Set CTF_DEBUG, BTF_DEBUG whenever appropriate. * toplev.c (process_options): Inform the user and ignore -gctfLEVEL if frontend is not C. include/ * ctf.h: New file. * btf.h: Likewise. libiberty/ * simple-object.c (handle_lto_debug_sections): Copy over .ctf sections. --- libiberty/simple-object.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'libiberty') diff --git a/libiberty/simple-object.c b/libiberty/simple-object.c index 6d70b95..909995d 100644 --- a/libiberty/simple-object.c +++ b/libiberty/simple-object.c @@ -304,6 +304,9 @@ handle_lto_debug_sections (const char *name, int rename) /* Copy over .GCC.command.line section under the same name if present. */ else if (strcmp (name, ".GCC.command.line") == 0) return strcpy (newname, name); + /* Copy over .ctf section under the same name if present. */ + else if (strcmp (name, ".ctf") == 0) + return strcpy (newname, name); free (newname); return NULL; } -- cgit v1.1