From 3f34cf910cbc4e77d25a300d8c290ae50bdcc2ed Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= Date: Thu, 20 Feb 2014 14:20:35 +0100 Subject: target-ppc: add extended opcodes for dcbt/dcbtst MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The latest glibc provides a memrchr routine using an extended opcode of the 'dcbt' instruction : 00000000000a7cc0 : 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 Signed-off-by: Alexander Graf --- target-ppc/translate.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/target-ppc/translate.c b/target-ppc/translate.c index 951f15e055..8885490aa8 100644 --- a/target-ppc/translate.c +++ b/target-ppc/translate.c @@ -9596,8 +9596,8 @@ GEN_HANDLER(mtspr, 0x1F, 0x13, 0x0E, 0x00000001, PPC_MISC), GEN_HANDLER(dcbf, 0x1F, 0x16, 0x02, 0x03C00001, PPC_CACHE), GEN_HANDLER(dcbi, 0x1F, 0x16, 0x0E, 0x03E00001, PPC_CACHE), GEN_HANDLER(dcbst, 0x1F, 0x16, 0x01, 0x03E00001, PPC_CACHE), -GEN_HANDLER(dcbt, 0x1F, 0x16, 0x08, 0x02000001, PPC_CACHE), -GEN_HANDLER(dcbtst, 0x1F, 0x16, 0x07, 0x02000001, PPC_CACHE), +GEN_HANDLER(dcbt, 0x1F, 0x16, 0x08, 0x00000001, PPC_CACHE), +GEN_HANDLER(dcbtst, 0x1F, 0x16, 0x07, 0x00000001, PPC_CACHE), GEN_HANDLER(dcbz, 0x1F, 0x16, 0x1F, 0x03C00001, PPC_CACHE_DCBZ), GEN_HANDLER(dst, 0x1F, 0x16, 0x0A, 0x01800001, PPC_ALTIVEC), GEN_HANDLER(dstst, 0x1F, 0x16, 0x0B, 0x02000001, PPC_ALTIVEC), -- cgit v1.2.3