diff options
| author | zbb <zbb@FreeBSD.org> | 2015-10-30 12:21:37 +0000 |
|---|---|---|
| committer | zbb <zbb@FreeBSD.org> | 2015-10-30 12:21:37 +0000 |
| commit | dbf29557d917055e8603643594313199f544af88 (patch) | |
| tree | 9ee6e26c7dd9d95b198842d5122fd05ccb8dbf31 /contrib/gdb | |
| parent | 2b14b99e0af107ce75981efc472db5350544b384 (diff) | |
| download | FreeBSD-src-dbf29557d917055e8603643594313199f544af88.zip FreeBSD-src-dbf29557d917055e8603643594313199f544af88.tar.gz | |
Workaround KGDB issues on ARM by ignoring ARM EABI version higher than 5
To make KGDB working, it needs to understand kernel ELF image.
By default it is compiled using EABI_5, which is not supported
on the gdb-6. As a workaround, treat these images as EABI_2 because
they share a lot of things in common.
This workaround does not guarantee ALL funtionalities
to work.
Submitted by: Wojciech Macek <wma@semihalf.com>
Reviewed by: jhb
Obtained from: Semihalf
Sponsored by: Juniper Networks Inc.
Differential Revision: https://reviews.freebsd.org/D4012
Diffstat (limited to 'contrib/gdb')
| -rw-r--r-- | contrib/gdb/gdb/arm-tdep.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/contrib/gdb/gdb/arm-tdep.c b/contrib/gdb/gdb/arm-tdep.c index 128219f..cec9061 100644 --- a/contrib/gdb/gdb/arm-tdep.c +++ b/contrib/gdb/gdb/arm-tdep.c @@ -2580,6 +2580,21 @@ arm_elf_osabi_sniffer (bfd *abfd) osabi = GDB_OSABI_ARM_EABI_V2; break; + case EF_ARM_EABI_VER3: + case EF_ARM_EABI_VER4: + case EF_ARM_EABI_VER5: + /* + * GDB does not support these EABI versions. Fallback + * to the highest known to make the KGDB working with + * kernel ELF image. + */ + osabi = GDB_OSABI_ARM_EABI_V2; + printf ("\n%s:%d " + "arm_elf_osabi_sniffer: Unsupported ARM EABI " + "version 0x%x, falling back to 0x%x\n", + __FILE__, __LINE__, eflags, EF_ARM_EABI_VER2); + break; + case EF_ARM_EABI_UNKNOWN: /* Assume GNU tools. */ osabi = GDB_OSABI_ARM_APCS; |
