Toolchain/binutils-gdb
1
0
Fork 0
forked from Imagelibrary/binutils-gdb
Code Pull Requests Activity

Fix BLX(1) for Thumb

Browse Source
This commit is contained in:
Nick Clifton
2001-03-06 22:33:47 +00:00
parent f8f3c6cc37
commit 4f3c3dbb37
9 changed files with 105 additions and 31 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
opcodes/ChangeLog
View File

@@ -1,3 +1,9 @@
2001-03-06 Nick Clifton <nickc@redhat.com>
* arm-dis.c (print_insn_thumb): Compute destination address
of BLX(1) instruction by taking bit 1 from PC and not from bit
0 of the offset.
2001-03-06 Igor Shevlyakov <igor@windriver.com>
* m68k-dis.c (print_insn_m68k): Recognize Coldfire CPUs

25
opcodes/arm-dis.c
View File

@@ -668,15 +668,32 @@ print_insn_thumb (pc, info, given)
/* Special processing for Thumb 2 instruction BL sequence: */
if (!*c) /* Check for empty (not NULL) assembler string. */
{
long offset;
info->bytes_per_chunk = 4;
info->bytes_per_line = 4;
offset = BDISP23 (given);
if ((given & 0x10000000) == 0)
func (stream, "blx\t");
{
func (stream, "blx\t");
/* The spec says that bit 1 of the branch's destination
address comes from bit 1 of the instruction's
address and not from the offset in the instruction. */
if (offset & 0x1)
{
/* func (stream, "*malformed!* "); */
offset &= ~ 0x1;
}
offset |= ((pc & 0x2) >> 1);
}
else
func (stream, "bl\t");
info->print_address_func (BDISP23 (given) * 2 + pc + 4, info);
func (stream, "bl\t");
info->print_address_func (offset * 2 + pc + 4, info);
return 4;
}
else