diff options
| author | H.J. Lu <hjl.tools@gmail.com> | 2020-09-30 16:33:35 -0700 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2020-09-30 16:33:52 -0700 |
| commit | 27f134698ac529f3050f5ddbd31a0ab0bbe5be99 (patch) | |
| tree | 4d78aee19d40896740744c7d668272fd0b186e66 /gas/config | |
| parent | 95eb9e54a51fdb819c8525a0a33138d861f31bc8 (diff) | |
| download | gdb-27f134698ac529f3050f5ddbd31a0ab0bbe5be99.zip gdb-27f134698ac529f3050f5ddbd31a0ab0bbe5be99.tar.gz gdb-27f134698ac529f3050f5ddbd31a0ab0bbe5be99.tar.bz2 | |
x86: Check register operand for AddrPrefixOpReg
If the address prefix changes the register operand, we need to check the
register operand when the memory operand is RIP-relative.
PR gas/26685
* config/tc-i386.c (process_suffix): Check the register operand
for the address size prefix if the memory operand is symbol(%rip).
* testsuite/gas/i386/x86-64-enqcmd.s: Add tests with RIP-relative
addressing.
* testsuite/gas/i386/x86-64-movdir.s: Likewise.
* testsuite/gas/i386/x86-64-enqcmd-intel.d: Updated.
* testsuite/gas/i386/x86-64-enqcmd.d: Likewise.
* testsuite/gas/i386/x86-64-movdir-intel.d: Likewise.
* testsuite/gas/i386/x86-64-movdir.d: Likewise.
Diffstat (limited to 'gas/config')
| -rw-r--r-- | gas/config/tc-i386.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/gas/config/tc-i386.c b/gas/config/tc-i386.c index 4891c45a..094f555 100644 --- a/gas/config/tc-i386.c +++ b/gas/config/tc-i386.c @@ -7178,6 +7178,19 @@ process_suffix (void) unsigned int op; enum { need_word, need_dword, need_qword } need; + /* Check the register operand for the address size prefix if + the memory operand is symbol(%rip). */ + if (i.mem_operands == 1 + && i.reg_operands == 1 + && i.operands == 2 + && i.base_reg + && i.base_reg->reg_num == RegIP + && i.base_reg->reg_type.bitfield.qword + && i.types[1].bitfield.class == Reg + && i.op[1].regs->reg_type.bitfield.dword + && !add_prefix (ADDR_PREFIX_OPCODE)) + return 0; + if (flag_code == CODE_32BIT) need = i.prefix[ADDR_PREFIX] ? need_word : need_dword; else if (i.prefix[ADDR_PREFIX]) |