From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:60837) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1flEhs-0007R6-1S for qemu-devel@nongnu.org; Thu, 02 Aug 2018 10:36:01 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1flEho-0000Jb-3d for qemu-devel@nongnu.org; Thu, 02 Aug 2018 10:36:00 -0400 Received: from mx2.rt-rk.com ([89.216.37.149]:40705 helo=mail.rt-rk.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1flEhn-0000Ig-S7 for qemu-devel@nongnu.org; Thu, 02 Aug 2018 10:35:56 -0400 From: Stefan Markovic Date: Thu, 2 Aug 2018 16:16:33 +0200 Message-Id: <1533219424-7627-47-git-send-email-stefan.markovic@rt-rk.com> In-Reply-To: <1533219424-7627-1-git-send-email-stefan.markovic@rt-rk.com> References: <1533219424-7627-1-git-send-email-stefan.markovic@rt-rk.com> Subject: [Qemu-devel] [PATCH v6 46/77] target/mips: Add updating BadInstr, BadInstrP, BadInstrX for nanoMIPS List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: laurent@vivier.eu, riku.voipio@iki.fi, philippe.mathieu.daude@gmail.com, aurelien@aurel32.net, richard.henderson@linaro.org, amarkovic@wavecomp.com, smarkovic@wavecomp.com, pjovanovic@wavecomp.com, pburton@wavecomp.com, arikalo@wavecomp.com From: Stefan Markovic Update BadInstr, BadInstrP,and BadInstrX registers for nanoMIPS. The same support for pre-nanoMIPS remains unimplemented. Signed-off-by: Yongbok Kim Signed-off-by: Aleksandar Markovic Signed-off-by: Stefan Markovic --- target/mips/helper.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/target/mips/helper.c b/target/mips/helper.c index e215af9..b25e000 100644 --- a/target/mips/helper.c +++ b/target/mips/helper.c @@ -682,6 +682,31 @@ static void set_hflags_for_handler (CPUMIPSState *env) static inline void set_badinstr_registers(CPUMIPSState *env) { + if (env->insn_flags & ISA_NANOMIPS32) { + if (env->CP0_Config3 & (1 << CP0C3_BI)) { + uint32_t instr = (cpu_lduw_code(env, env->active_tc.PC)) << 16; + if ((instr & 0x10000000) == 0) { + instr |= cpu_lduw_code(env, env->active_tc.PC + 2); + } + env->CP0_BadInstr = instr; + + if ((instr & 0xFC000000) == 0x60000000) { + instr = cpu_lduw_code(env, env->active_tc.PC + 4) << 16; + env->CP0_BadInstrX = instr; + } + } + if ((env->CP0_Config3 & (1 << CP0C3_BP)) && + (env->hflags & MIPS_HFLAG_BMASK)) { + if (!(env->hflags & MIPS_HFLAG_B16)) { + env->CP0_BadInstrP = cpu_ldl_code(env, env->active_tc.PC - 4); + } else { + env->CP0_BadInstrP = + (cpu_lduw_code(env, env->active_tc.PC - 2)) << 16; + } + } + return; + } + if (env->hflags & MIPS_HFLAG_M16) { /* TODO: add BadInstr support for microMIPS */ return; -- 1.9.1