diff options
| author | Vasily Gorbik <gor@linux.ibm.com> | 2020-11-13 00:03:29 +0100 |
|---|---|---|
| committer | Josh Poimboeuf <jpoimboe@redhat.com> | 2021-01-13 18:13:13 -0600 |
| commit | 8bfe273238d77d3cee18e4c03b2f26ae360b5661 (patch) | |
| tree | cd0313607796a23f9adf6f5f60a441f84ffc69dd /tools/objtool/orc_gen.c | |
| parent | a1a664ece586457e9f7652b0bc5b08386259e358 (diff) | |
objtool: Fix x86 orc generation on big endian cross-compiles
Correct objtool orc generation endianness problems to enable fully
functional x86 cross-compiles on big endian hardware.
Introduce bswap_if_needed() macro, which does a byte swap if target
endianness doesn't match the host, i.e. cross-compilation for little
endian on big endian and vice versa. The macro is used for conversion
of multi-byte values which are read from / about to be written to a
target native endianness ELF file.
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Diffstat (limited to 'tools/objtool/orc_gen.c')
| -rw-r--r-- | tools/objtool/orc_gen.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/tools/objtool/orc_gen.c b/tools/objtool/orc_gen.c index 9ce68b385a1b..1be7e16b2595 100644 --- a/tools/objtool/orc_gen.c +++ b/tools/objtool/orc_gen.c @@ -11,6 +11,7 @@ #include "check.h" #include "warn.h" +#include "endianness.h" int create_orc(struct objtool_file *file) { @@ -96,6 +97,8 @@ static int create_orc_entry(struct elf *elf, struct section *u_sec, struct secti /* populate ORC data */ orc = (struct orc_entry *)u_sec->data->d_buf + idx; memcpy(orc, o, sizeof(*orc)); + orc->sp_offset = bswap_if_needed(orc->sp_offset); + orc->bp_offset = bswap_if_needed(orc->bp_offset); /* populate reloc for ip */ reloc = malloc(sizeof(*reloc)); |