diff options
| author | Keith Packard <keithp@keithp.com> | 2013-05-13 22:27:00 -0700 |
|---|---|---|
| committer | Keith Packard <keithp@keithp.com> | 2013-05-13 22:27:00 -0700 |
| commit | 80a6b0ea5c36c307a8edc79ad10ef7a8ff3d480e (patch) | |
| tree | ed8d614d2a77d8534f1c2b7c5554dec8a25e310a /altoslib | |
| parent | 9bd717e71d69338b1af521b37e8bd975e503398e (diff) | |
altoslib: Correct hexfile address ranges
Stop trying to use sentinal values for addresses and just keep a
boolean tracking whether they've been initialized. Avoids precision
errors in the variables.
Signed-off-by: Keith Packard <keithp@keithp.com>
Diffstat (limited to 'altoslib')
| -rw-r--r-- | altoslib/AltosHexfile.java | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/altoslib/AltosHexfile.java b/altoslib/AltosHexfile.java index 68f42f14..2140228a 100644 --- a/altoslib/AltosHexfile.java +++ b/altoslib/AltosHexfile.java @@ -230,17 +230,19 @@ public class AltosHexfile { } long extended_addr = 0; - long base = 0xffffffff; - long bound = 0x00000000; + long base = 0; + long bound = 0; + boolean set = false; for (HexRecord record : record_list) { switch (record.type) { case 0: long addr = extended_addr + record.address; long r_bound = addr + record.data.length; - if (addr < base) + if (!set || addr < base) base = addr; - if (r_bound > bound) + if (!set || r_bound > bound) bound = r_bound; + set = true; break; case 1: break; @@ -259,7 +261,7 @@ public class AltosHexfile { } } - if (base >= bound) + if (!set || base >= bound) throw new IOException("invalid hex file"); if (bound - base > 4 * 1024 * 1024) |