target-ppc: add extended opcodes for dcbt/dcbtst
The latest glibc provides a memrchr routine using an extended opcode
of the 'dcbt' instruction :
00000000000a7cc0 <memrchr>:
a7cc0: 11 00 4c 3c addis r2,r12,17
a7cc4: b8 f8 42 38 addi r2,r2,-1864
a7cc8: 14 2a e3 7c add r7,r3,r5
a7ccc: d0 00 07 7c neg r0,r7
a7cd0: ff ff e7 38 addi r7,r7,-1
a7cd4: 78 1b 6a 7c mr r10,r3
a7cd8: 24 06 e6 78 rldicr r6,r7,0,56
a7cdc: 60 00 20 39 li r9,96
a7ce0: 2c 32 09 7e dcbtt r9,r6
....
which breaks grep, and other commands, in TCG mode :
invalid bits: 02000000 for opcode: 1f - 16 - 08 (7e09322c) 00003fff799feca0
This patch adds the extended opcodes for dcbt/dcbtst as no-ops just
like the 'dcbt' instruction.
Signed-off-by: Cédric Le Goater <clg@fr.ibm.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
3f34cf910c