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| author | Jin Kyu Song <jin.kyu.song@intel.com> | 2013-11-21 19:40:42 -0800 |
|---|---|---|
| committer | Jin Kyu Song <jin.kyu.song@intel.com> | 2013-11-22 11:59:14 -0800 |
| commit | 305f3cee04d1adf3f4e335c5645814f2b67e8a69 (patch) | |
| tree | f303bc5873de869d5a1f05212033302b55c59d63 /test | |
| parent | 5f3bfee708deba146302df4bb33d081f496399c0 (diff) | |
| download | nasm-305f3cee04d1adf3f4e335c5645814f2b67e8a69.tar.gz nasm-305f3cee04d1adf3f4e335c5645814f2b67e8a69.tar.bz2 nasm-305f3cee04d1adf3f4e335c5645814f2b67e8a69.zip | |
bnd: Drop bnd prefix for relaxed short jmp instructions
Reverted the redundant branch instruction patterns for bnd prefix.
And when a relaxed jmp instruction becomes a short (Jb) form,
bnd prefix is not needed because it does not initialize bnd registers.
So in that case, bnd prefix is silently dropped.
BND JMP foo -> drops bnd prefix
BND JMP short foo -> shows an explicit error
Signed-off-by: Jin Kyu Song <jin.kyu.song@intel.com>
Diffstat (limited to 'test')
| -rw-r--r-- | test/mpx-64.asm | 5 | ||||
| -rw-r--r-- | test/mpx.asm | 5 |
2 files changed, 8 insertions, 2 deletions
diff --git a/test/mpx-64.asm b/test/mpx-64.asm index bc5e7d4..d177622 100644 --- a/test/mpx-64.asm +++ b/test/mpx-64.asm @@ -111,7 +111,10 @@ BITS 64 ; bnd bnd ret bnd call foo - bnd jmp foo + bnd jmp foo ; when it becomes a Jb form - short jmp (eb), + ; bnd prefix is silently dropped + bnd jmp near 0 ; near jmp (opcode e9) +; bnd jmp short 0 ; explicit short jmp (opcode eb) : error bnd jno foo foo: bnd ret diff --git a/test/mpx.asm b/test/mpx.asm index 24ffcc8..1fd5b1d 100644 --- a/test/mpx.asm +++ b/test/mpx.asm @@ -79,7 +79,10 @@ BITS 32 ; bnd bnd ret bnd call foo - bnd jmp foo + bnd jmp foo ; when it becomes a Jb form - short jmp (eb), + ; bnd prefix is silently dropped + bnd jmp near 0 ; near jmp (opcode e9) +; bnd jmp short 0 ; explicit short jmp (opcode eb) : error bnd jno foo foo: bnd ret |