diff options
Diffstat (limited to 'gdb/gdbserver/linux-low.c')
| -rw-r--r-- | gdb/gdbserver/linux-low.c | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/gdb/gdbserver/linux-low.c b/gdb/gdbserver/linux-low.c index 6f703f589fe..7158a6798c9 100644 --- a/gdb/gdbserver/linux-low.c +++ b/gdb/gdbserver/linux-low.c @@ -7423,6 +7423,53 @@ linux_get_pc_64bit (struct regcache *regcache) return pc; } +/* Fetch the entry MATCH from the auxv vector, where entries are length + WORDSIZE. If no entry was found, return zero. */ + +static CORE_ADDR +linux_get_auxv (int wordsize, CORE_ADDR match) +{ + gdb_byte *data = (gdb_byte *) alloca (2 * wordsize); + int offset = 0; + + gdb_assert (wordsize == 4 || wordsize == 8); + + while ((*the_target->read_auxv) (offset, data, 2 * wordsize) == 2 * wordsize) + { + if (wordsize == 4) + { + uint32_t *data_p = (uint32_t *)data; + if (data_p[0] == match) + return data_p[1]; + } + else + { + uint64_t *data_p = (uint64_t *)data; + if (data_p[0] == match) + return data_p[1]; + } + + offset += 2 * wordsize; + } + + return 0; +} + +/* See linux-low.h. */ + +CORE_ADDR +linux_get_hwcap (int wordsize) +{ + return linux_get_auxv (wordsize, AT_HWCAP); +} + +/* See linux-low.h. */ + +CORE_ADDR +linux_get_hwcap2 (int wordsize) +{ + return linux_get_auxv (wordsize, AT_HWCAP2); +} static struct target_ops linux_target_ops = { linux_create_inferior, |