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| author | Max Filippov <jcmvbkbc@gmail.com> | 2017-01-25 10:54:11 -0800 |
|---|---|---|
| committer | Max Filippov <jcmvbkbc@gmail.com> | 2018-03-16 09:40:34 -0700 |
| commit | ba7651fba54199e5dedbbd08157687291b9dbae3 (patch) | |
| tree | f03b970e3cfdfde9040ff14c59dc0bf3acfb6fe3 /target/xtensa/cpu.c | |
| parent | bf9c3a5a96dfabcdcb7964110866bb9bc06a43c1 (diff) | |
| download | qemu-ba7651fba54199e5dedbbd08157687291b9dbae3.zip qemu-ba7651fba54199e5dedbbd08157687291b9dbae3.tar.gz qemu-ba7651fba54199e5dedbbd08157687291b9dbae3.tar.bz2 | |
target/xtensa: add linux-user support
Import list of syscalls from the kernel source. Conditionalize code/data
that is only used with softmmu. Implement exception handlers. Implement
signal hander (only the core registers for now, no coprocessors or TIE).
Cc: Riku Voipio <riku.voipio@iki.fi>
Cc: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Diffstat (limited to 'target/xtensa/cpu.c')
| -rw-r--r-- | target/xtensa/cpu.c | 26 |
1 files changed, 22 insertions, 4 deletions
diff --git a/target/xtensa/cpu.c b/target/xtensa/cpu.c index 4573388..2b5b537 100644 --- a/target/xtensa/cpu.c +++ b/target/xtensa/cpu.c @@ -45,9 +45,13 @@ static void xtensa_cpu_set_pc(CPUState *cs, vaddr value) static bool xtensa_cpu_has_work(CPUState *cs) { +#ifndef CONFIG_USER_ONLY XtensaCPU *cpu = XTENSA_CPU(cs); return !cpu->env.runstall && cpu->env.pending_irq_level; +#else + return true; +#endif } /* CPUClass::reset() */ @@ -62,8 +66,16 @@ static void xtensa_cpu_reset(CPUState *s) env->exception_taken = 0; env->pc = env->config->exception_vector[EXC_RESET0 + env->static_vectors]; env->sregs[LITBASE] &= ~1; +#ifndef CONFIG_USER_ONLY env->sregs[PS] = xtensa_option_enabled(env->config, XTENSA_OPTION_INTERRUPT) ? 0x1f : 0x10; + env->pending_irq_level = 0; +#else + env->sregs[PS] = + (xtensa_option_enabled(env->config, + XTENSA_OPTION_WINDOWED_REGISTER) ? PS_WOE : 0) | + PS_UM | (3 << PS_RING_SHIFT); +#endif env->sregs[VECBASE] = env->config->vecbase; env->sregs[IBREAKENABLE] = 0; env->sregs[MEMCTL] = MEMCTL_IL0EN & env->config->memctl_mask; @@ -73,9 +85,10 @@ static void xtensa_cpu_reset(CPUState *s) env->sregs[CONFIGID0] = env->config->configid[0]; env->sregs[CONFIGID1] = env->config->configid[1]; - env->pending_irq_level = 0; +#ifndef CONFIG_USER_ONLY reset_mmu(env); s->halted = env->runstall; +#endif } static ObjectClass *xtensa_cpu_class_by_name(const char *cpu_model) @@ -104,11 +117,12 @@ static void xtensa_cpu_disas_set_info(CPUState *cs, disassemble_info *info) static void xtensa_cpu_realizefn(DeviceState *dev, Error **errp) { CPUState *cs = CPU(dev); - XtensaCPU *cpu = XTENSA_CPU(dev); XtensaCPUClass *xcc = XTENSA_CPU_GET_CLASS(dev); Error *local_err = NULL; - xtensa_irq_init(&cpu->env); +#ifndef CONFIG_USER_ONLY + xtensa_irq_init(&XTENSA_CPU(dev)->env); +#endif cpu_exec_realizefn(cs, &local_err); if (local_err != NULL) { @@ -133,11 +147,13 @@ static void xtensa_cpu_initfn(Object *obj) cs->env_ptr = env; env->config = xcc->config; +#ifndef CONFIG_USER_ONLY env->address_space_er = g_malloc(sizeof(*env->address_space_er)); env->system_er = g_malloc(sizeof(*env->system_er)); memory_region_init_io(env->system_er, NULL, NULL, env, "er", UINT64_C(0x100000000)); address_space_init(env->address_space_er, env->system_er, "ER"); +#endif } static const VMStateDescription vmstate_xtensa_cpu = { @@ -166,7 +182,9 @@ static void xtensa_cpu_class_init(ObjectClass *oc, void *data) cc->gdb_read_register = xtensa_cpu_gdb_read_register; cc->gdb_write_register = xtensa_cpu_gdb_write_register; cc->gdb_stop_before_watchpoint = true; -#ifndef CONFIG_USER_ONLY +#ifdef CONFIG_USER_ONLY + cc->handle_mmu_fault = xtensa_cpu_handle_mmu_fault; +#else cc->do_unaligned_access = xtensa_cpu_do_unaligned_access; cc->get_phys_page_debug = xtensa_cpu_get_phys_page_debug; cc->do_unassigned_access = xtensa_cpu_do_unassigned_access; |