diff options
Diffstat (limited to 'opcodes/dis-buf.c')
| -rw-r--r-- | opcodes/dis-buf.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/opcodes/dis-buf.c b/opcodes/dis-buf.c index 523fe72..65b1edb 100644 --- a/opcodes/dis-buf.c +++ b/opcodes/dis-buf.c @@ -29,11 +29,17 @@ buffer_read_memory (memaddr, myaddr, length, info) int length; struct disassemble_info *info; { + int opb = info->octets_per_byte; + int end_addr_offset = length / opb; + int max_addr_offset = info->buffer_length / opb; + int octets = (memaddr - info->buffer_vma) * opb; + if (memaddr < info->buffer_vma - || memaddr - info->buffer_vma + length > info->buffer_length) + || memaddr - info->buffer_vma + end_addr_offset > max_addr_offset) /* Out of bounds. Use EIO because GDB uses it. */ return EIO; - memcpy (myaddr, info->buffer + (memaddr - info->buffer_vma), length); + memcpy (myaddr, info->buffer + octets, length); + return 0; } |