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| author | Peter Maydell <peter.maydell@linaro.org> | 2013-09-03 20:12:13 +0100 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2013-09-10 19:11:28 +0100 |
| commit | 1861c4543ffa6224d0661036afaa7ec1cf30e8bb (patch) | |
| tree | 4c1e09a89143406e6efea36881333f6acbf3cbdb | |
| parent | 067d983127da5c05a365230b12f2f557ec721c97 (diff) | |
| download | qemu-1861c4543ffa6224d0661036afaa7ec1cf30e8bb.zip qemu-1861c4543ffa6224d0661036afaa7ec1cf30e8bb.tar.gz qemu-1861c4543ffa6224d0661036afaa7ec1cf30e8bb.tar.bz2 | |
linux-user: Add cpu loop for AArch64
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 <peter.maydell@linaro.org>
Message-id: 1378235544-22290-14-git-send-email-peter.maydell@linaro.org
| -rw-r--r-- | linux-user/main.c | 82 |
1 files changed, 82 insertions, 0 deletions
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 |