From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:51638) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VJT36-0004b2-VV for qemu-devel@nongnu.org; Tue, 10 Sep 2013 14:52:30 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1VJT35-0005Bt-AO for qemu-devel@nongnu.org; Tue, 10 Sep 2013 14:52:28 -0400 Received: from 1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.d.1.0.0.b.8.0.1.0.0.2.ip6.arpa ([2001:8b0:1d0::1]:43707 helo=mnementh.archaic.org.uk) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VJT35-00056X-3E for qemu-devel@nongnu.org; Tue, 10 Sep 2013 14:52:27 -0400 From: Peter Maydell Date: Tue, 10 Sep 2013 19:52:13 +0100 Message-Id: <1378839142-7726-20-git-send-email-peter.maydell@linaro.org> In-Reply-To: <1378839142-7726-1-git-send-email-peter.maydell@linaro.org> References: <1378839142-7726-1-git-send-email-peter.maydell@linaro.org> Subject: [Qemu-devel] [PULL 19/28] linux-user: Add cpu loop for AArch64 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Anthony Liguori Cc: qemu-devel@nongnu.org Add the main linux-user cpu loop for AArch64. Since AArch64 has a different system call interface, doesn't need to worry about FPA emulation and may in the future keep the prefetch/data abort information in different system registers, it's simplest just to use a completely separate loop from the 32 bit ARM target, rather than peppering it with ifdefs. Signed-off-by: Peter Maydell Message-id: 1378235544-22290-14-git-send-email-peter.maydell@linaro.org --- linux-user/main.c | 82 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 82 insertions(+) diff --git a/linux-user/main.c b/linux-user/main.c index 5c2f7b2..b6e434a 100644 --- a/linux-user/main.c +++ b/linux-user/main.c @@ -449,6 +449,9 @@ void cpu_loop(CPUX86State *env) __r; \ }) +#ifdef TARGET_ABI32 +/* Commpage handling -- there is no commpage for AArch64 */ + /* * See the Linux kernel's Documentation/arm/kernel_user_helpers.txt * Input: @@ -582,6 +585,7 @@ do_kernel_trap(CPUARMState *env) return 0; } +#endif static int do_strex(CPUARMState *env) { @@ -661,6 +665,7 @@ done: return segv; } +#ifdef TARGET_ABI32 void cpu_loop(CPUARMState *env) { CPUState *cs = CPU(arm_env_get_cpu(env)); @@ -873,6 +878,83 @@ void cpu_loop(CPUARMState *env) } } +#else + +/* AArch64 main loop */ +void cpu_loop(CPUARMState *env) +{ + CPUState *cs = CPU(arm_env_get_cpu(env)); + int trapnr, sig; + target_siginfo_t info; + uint32_t addr; + + for (;;) { + cpu_exec_start(cs); + trapnr = cpu_arm_exec(env); + cpu_exec_end(cs); + + switch (trapnr) { + case EXCP_SWI: + env->xregs[0] = do_syscall(env, + env->xregs[8], + env->xregs[0], + env->xregs[1], + env->xregs[2], + env->xregs[3], + env->xregs[4], + env->xregs[5], + 0, 0); + break; + case EXCP_INTERRUPT: + /* just indicate that signals should be handled asap */ + break; + case EXCP_UDEF: + info.si_signo = SIGILL; + info.si_errno = 0; + info.si_code = TARGET_ILL_ILLOPN; + info._sifields._sigfault._addr = env->pc; + queue_signal(env, info.si_signo, &info); + break; + case EXCP_PREFETCH_ABORT: + addr = env->cp15.c6_insn; + goto do_segv; + case EXCP_DATA_ABORT: + addr = env->cp15.c6_data; + do_segv: + info.si_signo = SIGSEGV; + info.si_errno = 0; + /* XXX: check env->error_code */ + info.si_code = TARGET_SEGV_MAPERR; + info._sifields._sigfault._addr = addr; + queue_signal(env, info.si_signo, &info); + break; + case EXCP_DEBUG: + case EXCP_BKPT: + sig = gdb_handlesig(cs, TARGET_SIGTRAP); + if (sig) { + info.si_signo = sig; + info.si_errno = 0; + info.si_code = TARGET_TRAP_BRKPT; + queue_signal(env, info.si_signo, &info); + } + break; + case EXCP_STREX: + if (do_strex(env)) { + addr = env->cp15.c6_data; + goto do_segv; + } + break; + default: + fprintf(stderr, "qemu: unhandled CPU exception 0x%x - aborting\n", + trapnr); + cpu_dump_state(cs, stderr, fprintf, 0); + abort(); + } + process_pending_signals(env); + } +} +#endif /* ndef TARGET_ABI32 */ + #endif #ifdef TARGET_UNICORE32 -- 1.7.9.5