diff options
Diffstat (limited to 'opcodes/i386-dis.c')
| -rw-r--r-- | opcodes/i386-dis.c | 95 |
1 files changed, 90 insertions, 5 deletions
diff --git a/opcodes/i386-dis.c b/opcodes/i386-dis.c index 4fb487d5a49..06a842eef79 100644 --- a/opcodes/i386-dis.c +++ b/opcodes/i386-dis.c @@ -388,6 +388,7 @@ fetch_data (struct disassemble_info *info, bfd_byte *addr) #define USE_GROUPS 2 #define USE_PREFIX_USER_TABLE 3 #define X86_64_SPECIAL 4 +#define IS_3BYTE_OPCODE 5 #define FLOAT NULL, NULL, FLOATCODE, NULL, 0, NULL, 0 @@ -453,6 +454,9 @@ fetch_data (struct disassemble_info *info, bfd_byte *addr) #define X86_64_0 NULL, NULL, X86_64_SPECIAL, NULL, 0, NULL, 0 +#define THREE_BYTE_0 NULL, NULL, IS_3BYTE_OPCODE, NULL, 0, NULL, 0 +#define THREE_BYTE_1 NULL, NULL, IS_3BYTE_OPCODE, NULL, 1, NULL, 0 + typedef void (*op_rtn) (int bytemode, int sizeflag); struct dis386 { @@ -858,9 +862,9 @@ static const struct dis386 dis386_twobyte[] = { { "(bad)", XX, XX, XX }, { "(bad)", XX, XX, XX }, /* 38 */ + { THREE_BYTE_0 }, { "(bad)", XX, XX, XX }, - { "(bad)", XX, XX, XX }, - { "(bad)", XX, XX, XX }, + { THREE_BYTE_1 }, { "(bad)", XX, XX, XX }, { "(bad)", XX, XX, XX }, { "(bad)", XX, XX, XX }, @@ -1113,7 +1117,7 @@ static const unsigned char twobyte_has_modrm[256] = { /* 00 */ 1,1,1,1,0,0,0,0,0,0,0,0,0,1,0,1, /* 0f */ /* 10 */ 1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0, /* 1f */ /* 20 */ 1,1,1,1,1,0,1,0,1,1,1,1,1,1,1,1, /* 2f */ - /* 30 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 3f */ + /* 30 */ 0,0,0,0,0,0,0,0,1,0,1,0,0,0,0,0, /* 3f */ /* 40 */ 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /* 4f */ /* 50 */ 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /* 5f */ /* 60 */ 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /* 6f */ @@ -1136,7 +1140,7 @@ static const unsigned char twobyte_uses_SSE_prefix[256] = { /* 00 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0f */ /* 10 */ 1,1,1,0,0,0,1,0,0,0,0,0,0,0,0,0, /* 1f */ /* 20 */ 0,0,0,0,0,0,0,0,0,0,1,0,1,1,0,0, /* 2f */ - /* 30 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 3f */ + /* 30 */ 0,0,0,0,0,0,0,0,1,0,1,0,0,0,0,0, /* 3f */ /* 40 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 4f */ /* 50 */ 0,1,1,1,0,0,0,0,1,1,1,1,1,1,1,1, /* 5f */ /* 60 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,1, /* 6f */ @@ -1749,6 +1753,79 @@ static const struct dis386 x86_64_table[][2] = { }, }; +static const struct dis386 three_byte_table[][32] = { + /* THREE_BYTE_0 */ + { + { "pshufb", MX, EM, XX }, + { "phaddw", MX, EM, XX }, + { "phaddd", MX, EM, XX }, + { "phaddsw", MX, EM, XX }, + { "pmaddubsw", MX, EM, XX }, + { "phsubw", MX, EM, XX }, + { "phsubd", MX, EM, XX }, + { "phsubsw", MX, EM, XX }, + { "psignb", MX, EM, XX }, + { "psignw", MX, EM, XX }, + { "psignd", MX, EM, XX }, + { "pmulhrsw", MX, EM, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "pabsb", MX, EM, XX }, + { "pabsw", MX, EM, XX }, + { "pabsd", MX, EM, XX }, + { "(bad)", XX, XX, XX } + }, + /* THREE_BYTE_1 */ + { + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "palignr", MX, EM, Ib }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX }, + { "(bad)", XX, XX, XX } + }, +}; + #define INTERNAL_DISASSEMBLER_ERROR _("<internal disassembler error>") static void @@ -2206,7 +2283,15 @@ print_insn (bfd_vma pc, disassemble_info *info) } } - if (need_modrm) + if (dp->name == NULL && dp->bytemode1 == IS_3BYTE_OPCODE) + { + FETCH_DATA (info, codep + 2); + dp = &three_byte_table[dp->bytemode2][*codep++]; + mod = (*codep >> 6) & 3; + reg = (*codep >> 3) & 7; + rm = *codep & 7; + } + else if (need_modrm) { FETCH_DATA (info, codep + 1); mod = (*codep >> 6) & 3; |