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| author | Daniel Jacobowitz <drow@false.org> | 2004-03-09 15:44:26 +0000 |
|---|---|---|
| committer | Daniel Jacobowitz <drow@false.org> | 2004-03-09 15:44:26 +0000 |
| commit | aa17d93ef598c597538deaa8f19217ee8ca0ec26 (patch) | |
| tree | 81dc4804855b6cacc97436f9dbab5ad45ed506ff /gdb/arm-tdep.c | |
| parent | 58670637de158d29a389b48b82179e26b13d96ee (diff) | |
| download | gdb-aa17d93ef598c597538deaa8f19217ee8ca0ec26.zip gdb-aa17d93ef598c597538deaa8f19217ee8ca0ec26.tar.gz gdb-aa17d93ef598c597538deaa8f19217ee8ca0ec26.tar.bz2 | |
* arm-tdep.c (thumb_get_next_pc): Handle Thumb BLX.
Diffstat (limited to 'gdb/arm-tdep.c')
| -rw-r--r-- | gdb/arm-tdep.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/gdb/arm-tdep.c b/gdb/arm-tdep.c index 06bfcb6..05c0f23 100644 --- a/gdb/arm-tdep.c +++ b/gdb/arm-tdep.c @@ -1651,13 +1651,16 @@ thumb_get_next_pc (CORE_ADDR pc) { nextpc = pc_val + (sbits (inst1, 0, 10) << 1); } - else if ((inst1 & 0xf800) == 0xf000) /* long branch with link */ + else if ((inst1 & 0xf800) == 0xf000) /* long branch with link, and blx */ { unsigned short inst2 = read_memory_integer (pc + 2, 2); offset = (sbits (inst1, 0, 10) << 12) + (bits (inst2, 0, 10) << 1); nextpc = pc_val + offset; + /* For BLX make sure to clear the low bits. */ + if (bits (inst2, 11, 12) == 1) + nextpc = nextpc & 0xfffffffc; } - else if ((inst1 & 0xff80) == 0x4700) /* branch and exchange (bx) */ + else if ((inst1 & 0xff00) == 0x4700) /* bx REG, blx REG */ { if (bits (inst1, 3, 6) == 0x0f) nextpc = pc_val; |