diff options
| author | Ulrich Drepper <drepper@redhat.com> | 2008-12-31 10:21:51 -0800 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 2008-12-31 10:21:51 -0800 |
| commit | 54a6d4b1b6828519ea707f2ce4d8c1829c9fe595 (patch) | |
| tree | aa59bd9fb4fdde90c792e5f5527f839fdb210947 /libcpu | |
| parent | 98c245eb57b7a95b8673031cb8562b36716a04f4 (diff) | |
Fix printing of rex prefix in x86-64 disassembler.
Diffstat (limited to 'libcpu')
| -rw-r--r-- | libcpu/ChangeLog | 3 | ||||
| -rw-r--r-- | libcpu/i386_disasm.c | 17 |
2 files changed, 20 insertions, 0 deletions
diff --git a/libcpu/ChangeLog b/libcpu/ChangeLog index 041123e1..c562ff54 100644 --- a/libcpu/ChangeLog +++ b/libcpu/ChangeLog @@ -1,5 +1,8 @@ 2008-12-31 Ulrich Drepper <drepper@redhat.com> + * i386_disasm.c [X86_64] (i386_disasm): Handle rex prefix when + printing only prefix. + * i386_disasm.c (i386_disasm): Minor optimizations. * i386_parse.y (instrtable_out): No need to emit index, the reader can diff --git a/libcpu/i386_disasm.c b/libcpu/i386_disasm.c index 9961e4d9..b99748b6 100644 --- a/libcpu/i386_disasm.c +++ b/libcpu/i386_disasm.c @@ -520,6 +520,23 @@ i386_disasm (const uint8_t **startp, const uint8_t *end, GElf_Addr addr, case prefix_lock: ADD_STRING ("lock"); break; +#ifdef X86_64 + case 0x40 ... 0x4f: + ADD_STRING ("rex"); + if (byte != 0x40) + { + ADD_CHAR ('.'); + if (byte & 0x8) + ADD_CHAR ('w'); + if (byte & 0x4) + ADD_CHAR ('r'); + if (byte & 0x3) + ADD_CHAR ('x'); + if (byte & 0x1) + ADD_CHAR ('b'); + } + break; +#endif default: /* Cannot happen. */ puts ("unknown prefix"); |