From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:33882) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bnKmc-00019C-A9 for qemu-devel@nongnu.org; Fri, 23 Sep 2016 03:20:31 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bnKma-0001Cy-5e for qemu-devel@nongnu.org; Fri, 23 Sep 2016 03:20:29 -0400 Received: from mailapp02.imgtec.com ([217.156.133.132]:5779 helo=mailapp01.imgtec.com) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bnKmZ-0001Cr-Vn for qemu-devel@nongnu.org; Fri, 23 Sep 2016 03:20:28 -0400 From: Leon Alrae Date: Fri, 23 Sep 2016 08:20:03 +0100 Message-ID: <1474615210-9006-3-git-send-email-leon.alrae@imgtec.com> In-Reply-To: <1474615210-9006-1-git-send-email-leon.alrae@imgtec.com> References: <1474615210-9006-1-git-send-email-leon.alrae@imgtec.com> MIME-Version: 1.0 Content-Type: text/plain Subject: [Qemu-devel] [PULL 2/9] target-mips: generate fences List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: peter.maydell@linaro.org, aurelien@aurel32.net Make use of memory barrier TCG opcode in MIPS front end. Signed-off-by: Leon Alrae Reviewed-by: Richard Henderson --- target-mips/translate.c | 32 ++++++++++++++++++++++++++++++-- 1 file changed, 30 insertions(+), 2 deletions(-) diff --git a/target-mips/translate.c b/target-mips/translate.c index bab52cb..55c2ca0 100644 --- a/target-mips/translate.c +++ b/target-mips/translate.c @@ -13109,6 +13109,34 @@ static void gen_ldst_pair (DisasContext *ctx, uint32_t opc, int rd, tcg_temp_free(t1); } +static void gen_sync(int stype) +{ + TCGBar tcg_mo = TCG_BAR_SC; + + switch (stype) { + case 0x4: /* SYNC_WMB */ + tcg_mo |= TCG_MO_ST_ST; + break; + case 0x10: /* SYNC_MB */ + tcg_mo |= TCG_MO_ALL; + break; + case 0x11: /* SYNC_ACQUIRE */ + tcg_mo |= TCG_MO_LD_LD | TCG_MO_LD_ST; + break; + case 0x12: /* SYNC_RELEASE */ + tcg_mo |= TCG_MO_ST_ST | TCG_MO_LD_ST; + break; + case 0x13: /* SYNC_RMB */ + tcg_mo |= TCG_MO_LD_LD; + break; + default: + tcg_mo |= TCG_MO_ALL; + break; + } + + tcg_gen_mb(tcg_mo); +} + static void gen_pool32axf (CPUMIPSState *env, DisasContext *ctx, int rt, int rs) { int extension = (ctx->opcode >> 6) & 0x3f; @@ -13384,7 +13412,7 @@ static void gen_pool32axf (CPUMIPSState *env, DisasContext *ctx, int rt, int rs) case 0x2d: switch (minor) { case SYNC: - /* NOP */ + gen_sync(extract32(ctx->opcode, 16, 5)); break; case SYSCALL: generate_exception_end(ctx, EXCP_SYSCALL); @@ -17201,7 +17229,7 @@ static void decode_opc_special(CPUMIPSState *env, DisasContext *ctx) break; case OPC_SYNC: check_insn(ctx, ISA_MIPS2); - /* Treat as NOP. */ + gen_sync(extract32(ctx->opcode, 6, 5)); break; #if defined(TARGET_MIPS64) -- 2.7.4