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| author | Jon Turney <jon.turney@dronecode.org.uk> | 2020-06-29 16:20:13 +0100 |
|---|---|---|
| committer | Jon Turney <jon.turney@dronecode.org.uk> | 2020-09-18 17:12:08 +0100 |
| commit | 7d155da3d945350fb40e12c64511e0d719df3137 (patch) | |
| tree | 0a3a48d364c32d4d3bbd0de6875c648fdd0f65d7 | |
| parent | e8ef12b99666ef6f84f4c7601dc76ae351e453f2 (diff) | |
| download | gdb-7d155da3d945350fb40e12c64511e0d719df3137.zip gdb-7d155da3d945350fb40e12c64511e0d719df3137.tar.gz gdb-7d155da3d945350fb40e12c64511e0d719df3137.tar.bz2 | |
Add sniffer for Cygwin x86_64 core dumps
Similarly to existing i386_cygwin_core_osabi_sniffer()
gdb/ChangeLog:
2020-07-01 Jon Turney <jon.turney@dronecode.org.uk>
* amd64-windows-tdep.c (amd64_cygwin_core_osabi_sniffer): New.
(_initialize_amd64_windows_tdep): Register amd64_cygwin_core_osabi_sniffer.
| -rw-r--r-- | gdb/ChangeLog | 5 | ||||
| -rw-r--r-- | gdb/amd64-windows-tdep.c | 25 |
2 files changed, 30 insertions, 0 deletions
diff --git a/gdb/ChangeLog b/gdb/ChangeLog index c7b7438..b2f65bd 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,3 +1,8 @@ +2020-07-01 Jon Turney <jon.turney@dronecode.org.uk> + + * amd64-windows-tdep.c (amd64_cygwin_core_osabi_sniffer): New. + (_initialize_amd64_windows_tdep): Register amd64_cygwin_core_osabi_sniffer. + 2020-09-18 Pedro Alves <pedro@palves.net> PR gdb/26631 diff --git a/gdb/amd64-windows-tdep.c b/gdb/amd64-windows-tdep.c index 487dfd4..e55d021 100644 --- a/gdb/amd64-windows-tdep.c +++ b/gdb/amd64-windows-tdep.c @@ -42,6 +42,8 @@ static int amd64_windows_dummy_call_integer_regs[] = AMD64_R9_REGNUM /* %r9 */ }; +#define AMD64_WINDOWS_SIZEOF_GREGSET 1232 + /* Return nonzero if an argument of type TYPE should be passed via one of the integer registers. */ @@ -1276,6 +1278,24 @@ amd64_windows_osabi_sniffer (bfd *abfd) return GDB_OSABI_WINDOWS; } +static enum gdb_osabi +amd64_cygwin_core_osabi_sniffer (bfd *abfd) +{ + const char *target_name = bfd_get_target (abfd); + + /* Cygwin uses elf core dumps. Do not claim all ELF executables, + check whether there is a .reg section of proper size. */ + if (strcmp (target_name, "elf64-x86-64") == 0) + { + asection *section = bfd_get_section_by_name (abfd, ".reg"); + if (section != nullptr + && bfd_section_size (section) == AMD64_WINDOWS_SIZEOF_GREGSET) + return GDB_OSABI_CYGWIN; + } + + return GDB_OSABI_UNKNOWN; +} + void _initialize_amd64_windows_tdep (); void _initialize_amd64_windows_tdep () @@ -1287,4 +1307,9 @@ _initialize_amd64_windows_tdep () gdbarch_register_osabi_sniffer (bfd_arch_i386, bfd_target_coff_flavour, amd64_windows_osabi_sniffer); + + /* Cygwin uses elf core dumps. */ + gdbarch_register_osabi_sniffer (bfd_arch_i386, bfd_target_elf_flavour, + amd64_cygwin_core_osabi_sniffer); + } |