On Wednesday, October 23, 2019, Michael Rolnik <mrol...@gmail.com> wrote:
> Hi Aleksandar. > > I am fixing flag C and I will make flag Z to be like the others, just once > bit > > Sent from my cell phone, please ignore typos > No worries, thanks. A. > > On Tue, Oct 22, 2019, 1:37 AM Michael Rolnik <mrol...@gmail.com> wrote: > >> This includes: >> - CPU data structures >> - object model classes and functions >> - migration functions >> - GDB hooks >> >> Co-developed-by: Michael Rolnik <mrol...@gmail.com> >> Co-developed-by: Sarah Harris <s.e.har...@kent.ac.uk> >> Signed-off-by: Michael Rolnik <mrol...@gmail.com> >> Signed-off-by: Sarah Harris <s.e.har...@kent.ac.uk> >> Signed-off-by: Michael Rolnik <mrol...@gmail.com> >> Acked-by: Igor Mammedov <imamm...@redhat.com> >> --- >> gdb-xml/avr-cpu.xml | 49 ++++ >> target/avr/cpu-param.h | 37 +++ >> target/avr/cpu-qom.h | 54 ++++ >> target/avr/cpu.c | 576 +++++++++++++++++++++++++++++++++++++++++ >> target/avr/cpu.h | 254 ++++++++++++++++++ >> target/avr/gdbstub.c | 85 ++++++ >> target/avr/machine.c | 121 +++++++++ >> 7 files changed, 1176 insertions(+) >> create mode 100644 gdb-xml/avr-cpu.xml >> create mode 100644 target/avr/cpu-param.h >> create mode 100644 target/avr/cpu-qom.h >> create mode 100644 target/avr/cpu.c >> create mode 100644 target/avr/cpu.h >> create mode 100644 target/avr/gdbstub.c >> create mode 100644 target/avr/machine.c >> >> diff --git a/gdb-xml/avr-cpu.xml b/gdb-xml/avr-cpu.xml >> new file mode 100644 >> index 0000000000..c4747f5b40 >> --- /dev/null >> +++ b/gdb-xml/avr-cpu.xml >> @@ -0,0 +1,49 @@ >> +<?xml version="1.0"?> >> +<!-- Copyright (C) 2018-2019 Free Software Foundation, Inc. >> + >> + Copying and distribution of this file, with or without modification, >> + are permitted in any medium without royalty provided the copyright >> + notice and this notice are preserved. --> >> + >> +<!-- Register numbers are hard-coded in order to maintain backward >> + compatibility with older versions of tools that didn't use xml >> + register descriptions. --> >> + >> +<!DOCTYPE feature SYSTEM "gdb-target.dtd"> >> +<feature name="org.gnu.gdb.riscv.cpu"> >> + <reg name="r0" bitsize="8" type="int" regnum="0"/> >> + <reg name="r1" bitsize="8" type="int"/> >> + <reg name="r2" bitsize="8" type="int"/> >> + <reg name="r3" bitsize="8" type="int"/> >> + <reg name="r4" bitsize="8" type="int"/> >> + <reg name="r5" bitsize="8" type="int"/> >> + <reg name="r6" bitsize="8" type="int"/> >> + <reg name="r7" bitsize="8" type="int"/> >> + <reg name="r8" bitsize="8" type="int"/> >> + <reg name="r9" bitsize="8" type="int"/> >> + <reg name="r10" bitsize="8" type="int"/> >> + <reg name="r11" bitsize="8" type="int"/> >> + <reg name="r12" bitsize="8" type="int"/> >> + <reg name="r13" bitsize="8" type="int"/> >> + <reg name="r14" bitsize="8" type="int"/> >> + <reg name="r15" bitsize="8" type="int"/> >> + <reg name="r16" bitsize="8" type="int"/> >> + <reg name="r17" bitsize="8" type="int"/> >> + <reg name="r18" bitsize="8" type="int"/> >> + <reg name="r19" bitsize="8" type="int"/> >> + <reg name="r20" bitsize="8" type="int"/> >> + <reg name="r21" bitsize="8" type="int"/> >> + <reg name="r22" bitsize="8" type="int"/> >> + <reg name="r23" bitsize="8" type="int"/> >> + <reg name="r24" bitsize="8" type="int"/> >> + <reg name="r25" bitsize="8" type="int"/> >> + <reg name="r26" bitsize="8" type="int"/> >> + <reg name="r27" bitsize="8" type="int"/> >> + <reg name="r28" bitsize="8" type="int"/> >> + <reg name="r29" bitsize="8" type="int"/> >> + <reg name="r30" bitsize="8" type="int"/> >> + <reg name="r31" bitsize="8" type="int"/> >> + <reg name="sreg" bitsize="8" type="int"/> >> + <reg name="sp" bitsize="8" type="int"/> >> + <reg name="pc" bitsize="8" type="int"/> >> +</feature> >> diff --git a/target/avr/cpu-param.h b/target/avr/cpu-param.h >> new file mode 100644 >> index 0000000000..ccd1ea3429 >> --- /dev/null >> +++ b/target/avr/cpu-param.h >> @@ -0,0 +1,37 @@ >> +/* >> + * QEMU AVR CPU >> + * >> + * Copyright (c) 2019 Michael Rolnik >> + * >> + * This library is free software; you can redistribute it and/or >> + * modify it under the terms of the GNU Lesser General Public >> + * License as published by the Free Software Foundation; either >> + * version 2.1 of the License, or (at your option) any later version. >> + * >> + * This library is distributed in the hope that it will be useful, >> + * but WITHOUT ANY WARRANTY; without even the implied warranty of >> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU >> + * Lesser General Public License for more details. >> + * >> + * You should have received a copy of the GNU Lesser General Public >> + * License along with this library; if not, see >> + * <http://www.gnu.org/licenses/lgpl-2.1.html> >> + */ >> + >> +#ifndef AVR_CPU_PARAM_H >> +#define AVR_CPU_PARAM_H 1 >> + >> +#define TARGET_LONG_BITS 32 >> +/* >> + * TARGET_PAGE_BITS cannot be more than 8 bits because >> + * 1. all IO registers occupy [0x0000 .. 0x00ff] address range, and they >> + * should be implemented as a device and not memory >> + * 2. SRAM starts at the address 0x0100 >> + */ >> +#define TARGET_PAGE_BITS 8 >> +#define TARGET_PHYS_ADDR_SPACE_BITS 24 >> +#define TARGET_VIRT_ADDR_SPACE_BITS 24 >> +#define NB_MMU_MODES 2 >> + >> + >> +#endif >> diff --git a/target/avr/cpu-qom.h b/target/avr/cpu-qom.h >> new file mode 100644 >> index 0000000000..e28b58c897 >> --- /dev/null >> +++ b/target/avr/cpu-qom.h >> @@ -0,0 +1,54 @@ >> +/* >> + * QEMU AVR CPU >> + * >> + * Copyright (c) 2019 Michael Rolnik >> + * >> + * This library is free software; you can redistribute it and/or >> + * modify it under the terms of the GNU Lesser General Public >> + * License as published by the Free Software Foundation; either >> + * version 2.1 of the License, or (at your option) any later version. >> + * >> + * This library is distributed in the hope that it will be useful, >> + * but WITHOUT ANY WARRANTY; without even the implied warranty of >> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU >> + * Lesser General Public License for more details. >> + * >> + * You should have received a copy of the GNU Lesser General Public >> + * License along with this library; if not, see >> + * <http://www.gnu.org/licenses/lgpl-2.1.html> >> + */ >> + >> +#ifndef QEMU_AVR_QOM_H >> +#define QEMU_AVR_QOM_H >> + >> +#include "hw/core/cpu.h" >> + >> +#define TYPE_AVR_CPU "avr-cpu" >> + >> +#define AVR_CPU_CLASS(klass) \ >> + OBJECT_CLASS_CHECK(AVRCPUClass, (klass), TYPE_AVR_CPU) >> +#define AVR_CPU(obj) \ >> + OBJECT_CHECK(AVRCPU, (obj), TYPE_AVR_CPU) >> +#define AVR_CPU_GET_CLASS(obj) \ >> + OBJECT_GET_CLASS(AVRCPUClass, (obj), TYPE_AVR_CPU) >> + >> +/** >> + * AVRCPUClass: >> + * @parent_realize: The parent class' realize handler. >> + * @parent_reset: The parent class' reset handler. >> + * @vr: Version Register value. >> + * >> + * A AVR CPU model. >> + */ >> +typedef struct AVRCPUClass { >> + /*< private >*/ >> + CPUClass parent_class; >> + /*< public >*/ >> + DeviceRealize parent_realize; >> + void (*parent_reset)(CPUState *cpu); >> +} AVRCPUClass; >> + >> +typedef struct AVRCPU AVRCPU; >> + >> + >> +#endif /* !defined (QEMU_AVR_CPU_QOM_H) */ >> diff --git a/target/avr/cpu.c b/target/avr/cpu.c >> new file mode 100644 >> index 0000000000..dae56d7845 >> --- /dev/null >> +++ b/target/avr/cpu.c >> @@ -0,0 +1,576 @@ >> +/* >> + * QEMU AVR CPU >> + * >> + * Copyright (c) 2019 Michael Rolnik >> + * >> + * This library is free software; you can redistribute it and/or >> + * modify it under the terms of the GNU Lesser General Public >> + * License as published by the Free Software Foundation; either >> + * version 2.1 of the License, or (at your option) any later version. >> + * >> + * This library is distributed in the hope that it will be useful, >> + * but WITHOUT ANY WARRANTY; without even the implied warranty of >> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU >> + * Lesser General Public License for more details. >> + * >> + * You should have received a copy of the GNU Lesser General Public >> + * License along with this library; if not, see >> + * <http://www.gnu.org/licenses/lgpl-2.1.html> >> + */ >> + >> +#include "qemu/osdep.h" >> +#include "qapi/error.h" >> +#include "qemu/qemu-print.h" >> +#include "exec/exec-all.h" >> +#include "cpu.h" >> + >> +static void avr_cpu_set_pc(CPUState *cs, vaddr value) >> +{ >> + AVRCPU *cpu = AVR_CPU(cs); >> + >> + cpu->env.pc_w = value / 2; /* internally PC points to words */ >> +} >> + >> +static bool avr_cpu_has_work(CPUState *cs) >> +{ >> + AVRCPU *cpu = AVR_CPU(cs); >> + CPUAVRState *env = &cpu->env; >> + >> + return (cs->interrupt_request & (CPU_INTERRUPT_HARD | >> CPU_INTERRUPT_RESET)) >> + && cpu_interrupts_enabled(env); >> +} >> + >> +static void avr_cpu_synchronize_from_tb(CPUState *cs, TranslationBlock >> *tb) >> +{ >> + AVRCPU *cpu = AVR_CPU(cs); >> + CPUAVRState *env = &cpu->env; >> + >> + env->pc_w = tb->pc / 2; /* internally PC points to words */ >> +} >> + >> +static void avr_cpu_reset(CPUState *cs) >> +{ >> + AVRCPU *cpu = AVR_CPU(cs); >> + AVRCPUClass *mcc = AVR_CPU_GET_CLASS(cpu); >> + CPUAVRState *env = &cpu->env; >> + >> + mcc->parent_reset(cs); >> + >> + env->pc_w = 0; >> + env->sregI = 1; >> + env->sregC = 0; >> + env->sregZ = 0; >> + env->sregN = 0; >> + env->sregV = 0; >> + env->sregS = 0; >> + env->sregH = 0; >> + env->sregT = 0; >> + >> + env->rampD = 0; >> + env->rampX = 0; >> + env->rampY = 0; >> + env->rampZ = 0; >> + env->eind = 0; >> + env->sp = 0; >> + >> + env->skip = 0; >> + >> + memset(env->r, 0, sizeof(env->r)); >> + >> + tlb_flush(cs); >> +} >> + >> +static void avr_cpu_disas_set_info(CPUState *cpu, disassemble_info >> *info) >> +{ >> + info->mach = bfd_arch_avr; >> + info->print_insn = NULL; >> +} >> + >> +static void avr_cpu_realizefn(DeviceState *dev, Error **errp) >> +{ >> + CPUState *cs = CPU(dev); >> + AVRCPUClass *mcc = AVR_CPU_GET_CLASS(dev); >> + Error *local_err = NULL; >> + >> + cpu_exec_realizefn(cs, &local_err); >> + if (local_err != NULL) { >> + error_propagate(errp, local_err); >> + return; >> + } >> + qemu_init_vcpu(cs); >> + cpu_reset(cs); >> + >> + mcc->parent_realize(dev, errp); >> +} >> + >> +static void avr_cpu_set_int(void *opaque, int irq, int level) >> +{ >> + AVRCPU *cpu = opaque; >> + CPUAVRState *env = &cpu->env; >> + CPUState *cs = CPU(cpu); >> + >> + uint64_t mask = (1ull << irq); >> + if (level) { >> + env->intsrc |= mask; >> + cpu_interrupt(cs, CPU_INTERRUPT_HARD); >> + } else { >> + env->intsrc &= ~mask; >> + if (env->intsrc == 0) { >> + cpu_reset_interrupt(cs, CPU_INTERRUPT_HARD); >> + } >> + } >> +} >> + >> +static void avr_cpu_initfn(Object *obj) >> +{ >> + AVRCPU *cpu = AVR_CPU(obj); >> + >> + cpu_set_cpustate_pointers(cpu); >> + >> +#ifndef CONFIG_USER_ONLY >> + /* Set the number of interrupts supported by the CPU. */ >> + qdev_init_gpio_in(DEVICE(cpu), avr_cpu_set_int, 57); >> +#endif >> +} >> + >> +static ObjectClass *avr_cpu_class_by_name(const char *cpu_model) >> +{ >> + ObjectClass *oc; >> + >> + oc = object_class_by_name(cpu_model); >> + if (object_class_dynamic_cast(oc, TYPE_AVR_CPU) == NULL || >> + object_class_is_abstract(oc)) { >> + oc = NULL; >> + } >> + return oc; >> +} >> + >> +static void avr_cpu_dump_state(CPUState *cs, FILE *f, int flags) >> +{ >> + AVRCPU *cpu = AVR_CPU(cs); >> + CPUAVRState *env = &cpu->env; >> + int i; >> + >> + qemu_fprintf(f, "\n"); >> + qemu_fprintf(f, "PC: %06x\n", env->pc_w); >> + qemu_fprintf(f, "SP: %04x\n", env->sp); >> + qemu_fprintf(f, "rampD: %02x\n", env->rampD >> 16); >> + qemu_fprintf(f, "rampX: %02x\n", env->rampX >> 16); >> + qemu_fprintf(f, "rampY: %02x\n", env->rampY >> 16); >> + qemu_fprintf(f, "rampZ: %02x\n", env->rampZ >> 16); >> + qemu_fprintf(f, "EIND: %02x\n", env->eind >> 16); >> + qemu_fprintf(f, "X: %02x%02x\n", env->r[27], env->r[26]); >> + qemu_fprintf(f, "Y: %02x%02x\n", env->r[29], env->r[28]); >> + qemu_fprintf(f, "Z: %02x%02x\n", env->r[31], env->r[30]); >> + qemu_fprintf(f, "SREG: [ %c %c %c %c %c %c %c %c ]\n", >> + env->sregI ? 'I' : '-', >> + env->sregT ? 'T' : '-', >> + env->sregH ? 'H' : '-', >> + env->sregS ? 'S' : '-', >> + env->sregV ? 'V' : '-', >> + env->sregN ? '-' : 'N', /* Zf has negative logic >> */ >> + env->sregZ ? 'Z' : '-', >> + env->sregC ? 'I' : '-'); >> + qemu_fprintf(f, "SKIP: %02x\n", env->skip); >> + >> + qemu_fprintf(f, "\n"); >> + for (i = 0; i < ARRAY_SIZE(env->r); i++) { >> + qemu_fprintf(f, "R[%02d]: %02x ", i, env->r[i]); >> + >> + if ((i % 8) == 7) { >> + qemu_fprintf(f, "\n"); >> + } >> + } >> + qemu_fprintf(f, "\n"); >> +} >> + >> +static void avr_cpu_class_init(ObjectClass *oc, void *data) >> +{ >> + DeviceClass *dc = DEVICE_CLASS(oc); >> + CPUClass *cc = CPU_CLASS(oc); >> + AVRCPUClass *mcc = AVR_CPU_CLASS(oc); >> + >> + mcc->parent_realize = dc->realize; >> + dc->realize = avr_cpu_realizefn; >> + >> + mcc->parent_reset = cc->reset; >> + cc->reset = avr_cpu_reset; >> + >> + cc->class_by_name = avr_cpu_class_by_name; >> + >> + cc->has_work = avr_cpu_has_work; >> + cc->do_interrupt = avr_cpu_do_interrupt; >> + cc->cpu_exec_interrupt = avr_cpu_exec_interrupt; >> + cc->dump_state = avr_cpu_dump_state; >> + cc->set_pc = avr_cpu_set_pc; >> +#if !defined(CONFIG_USER_ONLY) >> + cc->memory_rw_debug = avr_cpu_memory_rw_debug; >> +#endif >> +#ifdef CONFIG_USER_ONLY >> + cc->handle_mmu_fault = avr_cpu_handle_mmu_fault; >> +#else >> + cc->get_phys_page_debug = avr_cpu_get_phys_page_debug; >> + cc->vmsd = &vms_avr_cpu; >> +#endif >> + cc->disas_set_info = avr_cpu_disas_set_info; >> + cc->tlb_fill = avr_cpu_tlb_fill; >> + cc->tcg_initialize = avr_cpu_tcg_init; >> + cc->synchronize_from_tb = avr_cpu_synchronize_from_tb; >> + cc->gdb_read_register = avr_cpu_gdb_read_register; >> + cc->gdb_write_register = avr_cpu_gdb_write_register; >> + cc->gdb_num_core_regs = 35; >> + cc->gdb_core_xml_file = "avr-cpu.xml"; >> +} >> + >> +static void avr_avr1_initfn(Object *obj) >> +{ >> + AVRCPU *cpu = AVR_CPU(obj); >> + CPUAVRState *env = &cpu->env; >> + >> + avr_set_feature(env, AVR_FEATURE_LPM); >> + avr_set_feature(env, AVR_FEATURE_2_BYTE_SP); >> + avr_set_feature(env, AVR_FEATURE_2_BYTE_PC); >> +} >> + >> +static void avr_avr2_initfn(Object *obj) >> +{ >> + AVRCPU *cpu = AVR_CPU(obj); >> + CPUAVRState *env = &cpu->env; >> + >> + avr_set_feature(env, AVR_FEATURE_LPM); >> + avr_set_feature(env, AVR_FEATURE_IJMP_ICALL); >> + avr_set_feature(env, AVR_FEATURE_ADIW_SBIW); >> + avr_set_feature(env, AVR_FEATURE_SRAM); >> + avr_set_feature(env, AVR_FEATURE_BREAK); >> + >> + avr_set_feature(env, AVR_FEATURE_2_BYTE_PC); >> + avr_set_feature(env, AVR_FEATURE_2_BYTE_SP); >> +} >> + >> +static void avr_avr25_initfn(Object *obj) >> +{ >> + AVRCPU *cpu = AVR_CPU(obj); >> + CPUAVRState *env = &cpu->env; >> + >> + avr_set_feature(env, AVR_FEATURE_LPM); >> + avr_set_feature(env, AVR_FEATURE_IJMP_ICALL); >> + avr_set_feature(env, AVR_FEATURE_ADIW_SBIW); >> + avr_set_feature(env, AVR_FEATURE_SRAM); >> + avr_set_feature(env, AVR_FEATURE_BREAK); >> + >> + avr_set_feature(env, AVR_FEATURE_2_BYTE_PC); >> + avr_set_feature(env, AVR_FEATURE_2_BYTE_SP); >> + avr_set_feature(env, AVR_FEATURE_LPMX); >> + avr_set_feature(env, AVR_FEATURE_MOVW); >> +} >> + >> +static void avr_avr3_initfn(Object *obj) >> +{ >> + AVRCPU *cpu = AVR_CPU(obj); >> + CPUAVRState *env = &cpu->env; >> + >> + avr_set_feature(env, AVR_FEATURE_LPM); >> + avr_set_feature(env, AVR_FEATURE_IJMP_ICALL); >> + avr_set_feature(env, AVR_FEATURE_ADIW_SBIW); >> + avr_set_feature(env, AVR_FEATURE_SRAM); >> + avr_set_feature(env, AVR_FEATURE_BREAK); >> + >> + avr_set_feature(env, AVR_FEATURE_2_BYTE_PC); >> + avr_set_feature(env, AVR_FEATURE_2_BYTE_SP); >> + avr_set_feature(env, AVR_FEATURE_JMP_CALL); >> +} >> + >> +static void avr_avr31_initfn(Object *obj) >> +{ >> + AVRCPU *cpu = AVR_CPU(obj); >> + CPUAVRState *env = &cpu->env; >> + >> + avr_set_feature(env, AVR_FEATURE_LPM); >> + avr_set_feature(env, AVR_FEATURE_IJMP_ICALL); >> + avr_set_feature(env, AVR_FEATURE_ADIW_SBIW); >> + avr_set_feature(env, AVR_FEATURE_SRAM); >> + avr_set_feature(env, AVR_FEATURE_BREAK); >> + >> + avr_set_feature(env, AVR_FEATURE_2_BYTE_PC); >> + avr_set_feature(env, AVR_FEATURE_2_BYTE_SP); >> + avr_set_feature(env, AVR_FEATURE_RAMPZ); >> + avr_set_feature(env, AVR_FEATURE_ELPM); >> + avr_set_feature(env, AVR_FEATURE_JMP_CALL); >> +} >> + >> +static void avr_avr35_initfn(Object *obj) >> +{ >> + AVRCPU *cpu = AVR_CPU(obj); >> + CPUAVRState *env = &cpu->env; >> + >> + avr_set_feature(env, AVR_FEATURE_LPM); >> + avr_set_feature(env, AVR_FEATURE_IJMP_ICALL); >> + avr_set_feature(env, AVR_FEATURE_ADIW_SBIW); >> + avr_set_feature(env, AVR_FEATURE_SRAM); >> + avr_set_feature(env, AVR_FEATURE_BREAK); >> + >> + avr_set_feature(env, AVR_FEATURE_2_BYTE_PC); >> + avr_set_feature(env, AVR_FEATURE_2_BYTE_SP); >> + avr_set_feature(env, AVR_FEATURE_JMP_CALL); >> + avr_set_feature(env, AVR_FEATURE_LPMX); >> + avr_set_feature(env, AVR_FEATURE_MOVW); >> +} >> + >> +static void avr_avr4_initfn(Object *obj) >> +{ >> + AVRCPU *cpu = AVR_CPU(obj); >> + CPUAVRState *env = &cpu->env; >> + >> + avr_set_feature(env, AVR_FEATURE_LPM); >> + avr_set_feature(env, AVR_FEATURE_IJMP_ICALL); >> + avr_set_feature(env, AVR_FEATURE_ADIW_SBIW); >> + avr_set_feature(env, AVR_FEATURE_SRAM); >> + avr_set_feature(env, AVR_FEATURE_BREAK); >> + >> + avr_set_feature(env, AVR_FEATURE_2_BYTE_PC); >> + avr_set_feature(env, AVR_FEATURE_2_BYTE_SP); >> + avr_set_feature(env, AVR_FEATURE_LPMX); >> + avr_set_feature(env, AVR_FEATURE_MOVW); >> + avr_set_feature(env, AVR_FEATURE_MUL); >> +} >> + >> +static void avr_avr5_initfn(Object *obj) >> +{ >> + AVRCPU *cpu = AVR_CPU(obj); >> + CPUAVRState *env = &cpu->env; >> + >> + avr_set_feature(env, AVR_FEATURE_LPM); >> + avr_set_feature(env, AVR_FEATURE_IJMP_ICALL); >> + avr_set_feature(env, AVR_FEATURE_ADIW_SBIW); >> + avr_set_feature(env, AVR_FEATURE_SRAM); >> + avr_set_feature(env, AVR_FEATURE_BREAK); >> + >> + avr_set_feature(env, AVR_FEATURE_2_BYTE_PC); >> + avr_set_feature(env, AVR_FEATURE_2_BYTE_SP); >> + avr_set_feature(env, AVR_FEATURE_JMP_CALL); >> + avr_set_feature(env, AVR_FEATURE_LPMX); >> + avr_set_feature(env, AVR_FEATURE_MOVW); >> + avr_set_feature(env, AVR_FEATURE_MUL); >> +} >> + >> +static void avr_avr51_initfn(Object *obj) >> +{ >> + AVRCPU *cpu = AVR_CPU(obj); >> + CPUAVRState *env = &cpu->env; >> + >> + avr_set_feature(env, AVR_FEATURE_LPM); >> + avr_set_feature(env, AVR_FEATURE_IJMP_ICALL); >> + avr_set_feature(env, AVR_FEATURE_ADIW_SBIW); >> + avr_set_feature(env, AVR_FEATURE_SRAM); >> + avr_set_feature(env, AVR_FEATURE_BREAK); >> + >> + avr_set_feature(env, AVR_FEATURE_2_BYTE_PC); >> + avr_set_feature(env, AVR_FEATURE_2_BYTE_SP); >> + avr_set_feature(env, AVR_FEATURE_RAMPZ); >> + avr_set_feature(env, AVR_FEATURE_ELPMX); >> + avr_set_feature(env, AVR_FEATURE_ELPM); >> + avr_set_feature(env, AVR_FEATURE_JMP_CALL); >> + avr_set_feature(env, AVR_FEATURE_LPMX); >> + avr_set_feature(env, AVR_FEATURE_MOVW); >> + avr_set_feature(env, AVR_FEATURE_MUL); >> +} >> + >> +static void avr_avr6_initfn(Object *obj) >> +{ >> + AVRCPU *cpu = AVR_CPU(obj); >> + CPUAVRState *env = &cpu->env; >> + >> + avr_set_feature(env, AVR_FEATURE_LPM); >> + avr_set_feature(env, AVR_FEATURE_IJMP_ICALL); >> + avr_set_feature(env, AVR_FEATURE_ADIW_SBIW); >> + avr_set_feature(env, AVR_FEATURE_SRAM); >> + avr_set_feature(env, AVR_FEATURE_BREAK); >> + >> + avr_set_feature(env, AVR_FEATURE_3_BYTE_PC); >> + avr_set_feature(env, AVR_FEATURE_2_BYTE_SP); >> + avr_set_feature(env, AVR_FEATURE_RAMPZ); >> + avr_set_feature(env, AVR_FEATURE_EIJMP_EICALL); >> + avr_set_feature(env, AVR_FEATURE_ELPMX); >> + avr_set_feature(env, AVR_FEATURE_ELPM); >> + avr_set_feature(env, AVR_FEATURE_JMP_CALL); >> + avr_set_feature(env, AVR_FEATURE_LPMX); >> + avr_set_feature(env, AVR_FEATURE_MOVW); >> + avr_set_feature(env, AVR_FEATURE_MUL); >> +} >> + >> +static void avr_xmega2_initfn(Object *obj) >> +{ >> + AVRCPU *cpu = AVR_CPU(obj); >> + CPUAVRState *env = &cpu->env; >> + >> + avr_set_feature(env, AVR_FEATURE_LPM); >> + avr_set_feature(env, AVR_FEATURE_IJMP_ICALL); >> + avr_set_feature(env, AVR_FEATURE_ADIW_SBIW); >> + avr_set_feature(env, AVR_FEATURE_SRAM); >> + avr_set_feature(env, AVR_FEATURE_BREAK); >> + >> + avr_set_feature(env, AVR_FEATURE_2_BYTE_PC); >> + avr_set_feature(env, AVR_FEATURE_2_BYTE_SP); >> + avr_set_feature(env, AVR_FEATURE_JMP_CALL); >> + avr_set_feature(env, AVR_FEATURE_LPMX); >> + avr_set_feature(env, AVR_FEATURE_MOVW); >> + avr_set_feature(env, AVR_FEATURE_MUL); >> + avr_set_feature(env, AVR_FEATURE_RMW); >> +} >> + >> +static void avr_xmega4_initfn(Object *obj) >> +{ >> + AVRCPU *cpu = AVR_CPU(obj); >> + CPUAVRState *env = &cpu->env; >> + >> + avr_set_feature(env, AVR_FEATURE_LPM); >> + avr_set_feature(env, AVR_FEATURE_IJMP_ICALL); >> + avr_set_feature(env, AVR_FEATURE_ADIW_SBIW); >> + avr_set_feature(env, AVR_FEATURE_SRAM); >> + avr_set_feature(env, AVR_FEATURE_BREAK); >> + >> + avr_set_feature(env, AVR_FEATURE_2_BYTE_PC); >> + avr_set_feature(env, AVR_FEATURE_2_BYTE_SP); >> + avr_set_feature(env, AVR_FEATURE_RAMPZ); >> + avr_set_feature(env, AVR_FEATURE_ELPMX); >> + avr_set_feature(env, AVR_FEATURE_ELPM); >> + avr_set_feature(env, AVR_FEATURE_JMP_CALL); >> + avr_set_feature(env, AVR_FEATURE_LPMX); >> + avr_set_feature(env, AVR_FEATURE_MOVW); >> + avr_set_feature(env, AVR_FEATURE_MUL); >> + avr_set_feature(env, AVR_FEATURE_RMW); >> +} >> + >> +static void avr_xmega5_initfn(Object *obj) >> +{ >> + AVRCPU *cpu = AVR_CPU(obj); >> + CPUAVRState *env = &cpu->env; >> + >> + avr_set_feature(env, AVR_FEATURE_LPM); >> + avr_set_feature(env, AVR_FEATURE_IJMP_ICALL); >> + avr_set_feature(env, AVR_FEATURE_ADIW_SBIW); >> + avr_set_feature(env, AVR_FEATURE_SRAM); >> + avr_set_feature(env, AVR_FEATURE_BREAK); >> + >> + avr_set_feature(env, AVR_FEATURE_2_BYTE_PC); >> + avr_set_feature(env, AVR_FEATURE_2_BYTE_SP); >> + avr_set_feature(env, AVR_FEATURE_RAMPD); >> + avr_set_feature(env, AVR_FEATURE_RAMPX); >> + avr_set_feature(env, AVR_FEATURE_RAMPY); >> + avr_set_feature(env, AVR_FEATURE_RAMPZ); >> + avr_set_feature(env, AVR_FEATURE_ELPMX); >> + avr_set_feature(env, AVR_FEATURE_ELPM); >> + avr_set_feature(env, AVR_FEATURE_JMP_CALL); >> + avr_set_feature(env, AVR_FEATURE_LPMX); >> + avr_set_feature(env, AVR_FEATURE_MOVW); >> + avr_set_feature(env, AVR_FEATURE_MUL); >> + avr_set_feature(env, AVR_FEATURE_RMW); >> +} >> + >> +static void avr_xmega6_initfn(Object *obj) >> +{ >> + AVRCPU *cpu = AVR_CPU(obj); >> + CPUAVRState *env = &cpu->env; >> + >> + avr_set_feature(env, AVR_FEATURE_LPM); >> + avr_set_feature(env, AVR_FEATURE_IJMP_ICALL); >> + avr_set_feature(env, AVR_FEATURE_ADIW_SBIW); >> + avr_set_feature(env, AVR_FEATURE_SRAM); >> + avr_set_feature(env, AVR_FEATURE_BREAK); >> + >> + avr_set_feature(env, AVR_FEATURE_3_BYTE_PC); >> + avr_set_feature(env, AVR_FEATURE_2_BYTE_SP); >> + avr_set_feature(env, AVR_FEATURE_RAMPZ); >> + avr_set_feature(env, AVR_FEATURE_EIJMP_EICALL); >> + avr_set_feature(env, AVR_FEATURE_ELPMX); >> + avr_set_feature(env, AVR_FEATURE_ELPM); >> + avr_set_feature(env, AVR_FEATURE_JMP_CALL); >> + avr_set_feature(env, AVR_FEATURE_LPMX); >> + avr_set_feature(env, AVR_FEATURE_MOVW); >> + avr_set_feature(env, AVR_FEATURE_MUL); >> + avr_set_feature(env, AVR_FEATURE_RMW); >> +} >> + >> +static void avr_xmega7_initfn(Object *obj) >> +{ >> + AVRCPU *cpu = AVR_CPU(obj); >> + CPUAVRState *env = &cpu->env; >> + >> + avr_set_feature(env, AVR_FEATURE_LPM); >> + avr_set_feature(env, AVR_FEATURE_IJMP_ICALL); >> + avr_set_feature(env, AVR_FEATURE_ADIW_SBIW); >> + avr_set_feature(env, AVR_FEATURE_SRAM); >> + avr_set_feature(env, AVR_FEATURE_BREAK); >> + >> + avr_set_feature(env, AVR_FEATURE_3_BYTE_PC); >> + avr_set_feature(env, AVR_FEATURE_2_BYTE_SP); >> + avr_set_feature(env, AVR_FEATURE_RAMPD); >> + avr_set_feature(env, AVR_FEATURE_RAMPX); >> + avr_set_feature(env, AVR_FEATURE_RAMPY); >> + avr_set_feature(env, AVR_FEATURE_RAMPZ); >> + avr_set_feature(env, AVR_FEATURE_EIJMP_EICALL); >> + avr_set_feature(env, AVR_FEATURE_ELPMX); >> + avr_set_feature(env, AVR_FEATURE_ELPM); >> + avr_set_feature(env, AVR_FEATURE_JMP_CALL); >> + avr_set_feature(env, AVR_FEATURE_LPMX); >> + avr_set_feature(env, AVR_FEATURE_MOVW); >> + avr_set_feature(env, AVR_FEATURE_MUL); >> + avr_set_feature(env, AVR_FEATURE_RMW); >> +} >> + >> +typedef struct AVRCPUInfo { >> + const char *name; >> + void (*initfn)(Object *obj); >> +} AVRCPUInfo; >> + >> + >> +static void avr_cpu_list_entry(gpointer data, gpointer user_data) >> +{ >> + const char *typename = object_class_get_name(OBJECT_CLASS(data)); >> + >> + qemu_printf("%s\n", typename); >> +} >> + >> +void avr_cpu_list(void) >> +{ >> + GSList *list; >> + list = object_class_get_list_sorted(TYPE_AVR_CPU, false); >> + g_slist_foreach(list, avr_cpu_list_entry, NULL); >> + g_slist_free(list); >> +} >> + >> +#define DEFINE_AVR_CPU_TYPE(model, initfn) \ >> + { \ >> + .parent = TYPE_AVR_CPU, \ >> + .instance_init = initfn, \ >> + .name = model "-avr-cpu", \ >> + } >> + >> +static const TypeInfo avr_cpu_type_info[] = { >> + { >> + .name = TYPE_AVR_CPU, >> + .parent = TYPE_CPU, >> + .instance_size = sizeof(AVRCPU), >> + .instance_init = avr_cpu_initfn, >> + .class_size = sizeof(AVRCPUClass), >> + .class_init = avr_cpu_class_init, >> + .abstract = true, >> + }, >> + DEFINE_AVR_CPU_TYPE("avr1", avr_avr1_initfn), >> + DEFINE_AVR_CPU_TYPE("avr2", avr_avr2_initfn), >> + DEFINE_AVR_CPU_TYPE("avr25", avr_avr25_initfn), >> + DEFINE_AVR_CPU_TYPE("avr3", avr_avr3_initfn), >> + DEFINE_AVR_CPU_TYPE("avr31", avr_avr31_initfn), >> + DEFINE_AVR_CPU_TYPE("avr35", avr_avr35_initfn), >> + DEFINE_AVR_CPU_TYPE("avr4", avr_avr4_initfn), >> + DEFINE_AVR_CPU_TYPE("avr5", avr_avr5_initfn), >> + DEFINE_AVR_CPU_TYPE("avr51", avr_avr51_initfn), >> + DEFINE_AVR_CPU_TYPE("avr6", avr_avr6_initfn), >> + DEFINE_AVR_CPU_TYPE("xmega2", avr_xmega2_initfn), >> + DEFINE_AVR_CPU_TYPE("xmega4", avr_xmega4_initfn), >> + DEFINE_AVR_CPU_TYPE("xmega5", avr_xmega5_initfn), >> + DEFINE_AVR_CPU_TYPE("xmega6", avr_xmega6_initfn), >> + DEFINE_AVR_CPU_TYPE("xmega7", avr_xmega7_initfn), >> +}; >> + >> +DEFINE_TYPES(avr_cpu_type_info) >> diff --git a/target/avr/cpu.h b/target/avr/cpu.h >> new file mode 100644 >> index 0000000000..45d644f4f4 >> --- /dev/null >> +++ b/target/avr/cpu.h >> @@ -0,0 +1,254 @@ >> +/* >> + * QEMU AVR CPU >> + * >> + * Copyright (c) 2019 Michael Rolnik >> + * >> + * This library is free software; you can redistribute it and/or >> + * modify it under the terms of the GNU Lesser General Public >> + * License as published by the Free Software Foundation; either >> + * version 2.1 of the License, or (at your option) any later version. >> + * >> + * This library is distributed in the hope that it will be useful, >> + * but WITHOUT ANY WARRANTY; without even the implied warranty of >> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU >> + * Lesser General Public License for more details. >> + * >> + * You should have received a copy of the GNU Lesser General Public >> + * License along with this library; if not, see >> + * <http://www.gnu.org/licenses/lgpl-2.1.html> >> + */ >> + >> +#ifndef QEMU_AVR_CPU_H >> +#define QEMU_AVR_CPU_H >> + >> +#include "cpu-qom.h" >> +#include "exec/cpu-defs.h" >> + >> +#define TCG_GUEST_DEFAULT_MO 0 >> + >> +#define CPU_RESOLVING_TYPE TYPE_AVR_CPU >> + >> +/* >> + * AVR has two memory spaces, data & code. >> + * e.g. both have 0 address >> + * ST/LD instructions access data space >> + * LPM/SPM and instruction fetching access code memory space >> + */ >> +#define MMU_CODE_IDX 0 >> +#define MMU_DATA_IDX 1 >> + >> +#define EXCP_RESET 1 >> +#define EXCP_INT(n) (EXCP_RESET + (n) + 1) >> + >> +/* Number of CPU registers */ >> +#define NO_CPU_REGISTERS 32 >> +/* Number of IO registers accessible by ld/st/in/out */ >> +#define NO_IO_REGISTERS 64 >> + >> +/* >> + * Offsets of AVR memory regions in host memory space. >> + * >> + * This is needed because the AVR has separate code and data address >> + * spaces that both have start from zero but have to go somewhere in >> + * host memory. >> + * >> + * It's also useful to know where some things are, like the IO registers. >> + */ >> +/* Flash program memory */ >> +#define OFFSET_CODE 0x00000000 >> +/* CPU registers, IO registers, and SRAM */ >> +#define OFFSET_DATA 0x00800000 >> +/* CPU registers specifically, these are mapped at the start of data */ >> +#define OFFSET_CPU_REGISTERS OFFSET_DATA >> +/* >> + * IO registers, including status register, stack pointer, and memory >> + * mapped peripherals, mapped just after CPU registers >> + */ >> +#define OFFSET_IO_REGISTERS (OFFSET_DATA + NO_CPU_REGISTERS) >> + >> +enum avr_features { >> + AVR_FEATURE_SRAM, >> + >> + AVR_FEATURE_1_BYTE_PC, >> + AVR_FEATURE_2_BYTE_PC, >> + AVR_FEATURE_3_BYTE_PC, >> + >> + AVR_FEATURE_1_BYTE_SP, >> + AVR_FEATURE_2_BYTE_SP, >> + >> + AVR_FEATURE_BREAK, >> + AVR_FEATURE_DES, >> + AVR_FEATURE_RMW, /* Read Modify Write - XCH LAC LAS LAT */ >> + >> + AVR_FEATURE_EIJMP_EICALL, >> + AVR_FEATURE_IJMP_ICALL, >> + AVR_FEATURE_JMP_CALL, >> + >> + AVR_FEATURE_ADIW_SBIW, >> + >> + AVR_FEATURE_SPM, >> + AVR_FEATURE_SPMX, >> + >> + AVR_FEATURE_ELPMX, >> + AVR_FEATURE_ELPM, >> + AVR_FEATURE_LPMX, >> + AVR_FEATURE_LPM, >> + >> + AVR_FEATURE_MOVW, >> + AVR_FEATURE_MUL, >> + AVR_FEATURE_RAMPD, >> + AVR_FEATURE_RAMPX, >> + AVR_FEATURE_RAMPY, >> + AVR_FEATURE_RAMPZ, >> +}; >> + >> +typedef struct CPUAVRState CPUAVRState; >> + >> +struct CPUAVRState { >> + uint32_t pc_w; /* 0x003fffff up to 22 bits */ >> + >> + uint32_t sregC; /* 0x00000001 1 bits */ >> + uint32_t sregZ; /* 0x0000ffff 16 bits, negative logic; */ >> + /* 0=flag set, >0=flag cleared */ >> + uint32_t sregN; /* 0x00000001 1 bits */ >> + uint32_t sregV; /* 0x00000001 1 bits */ >> + uint32_t sregS; /* 0x00000001 1 bits */ >> + uint32_t sregH; /* 0x00000001 1 bits */ >> + uint32_t sregT; /* 0x00000001 1 bits */ >> + uint32_t sregI; /* 0x00000001 1 bits */ >> + >> + uint32_t rampD; /* 0x00ff0000 8 bits */ >> + uint32_t rampX; /* 0x00ff0000 8 bits */ >> + uint32_t rampY; /* 0x00ff0000 8 bits */ >> + uint32_t rampZ; /* 0x00ff0000 8 bits */ >> + uint32_t eind; /* 0x00ff0000 8 bits */ >> + >> + uint32_t r[NO_CPU_REGISTERS]; /* 8 bits each */ >> + uint32_t sp; /* 16 bits */ >> + >> + uint32_t skip; /* if set skip instruction */ >> + >> + uint64_t intsrc; /* interrupt sources */ >> + bool fullacc; /* CPU/MEM if true MEM only otherwise */ >> + >> + uint32_t features; >> +}; >> + >> +/** >> + * AVRCPU: >> + * @env: #CPUAVRState >> + * >> + * A AVR CPU. >> + */ >> +typedef struct AVRCPU { >> + /*< private >*/ >> + CPUState parent_obj; >> + /*< public >*/ >> + >> + CPUNegativeOffsetState neg; >> + CPUAVRState env; >> +} AVRCPU; >> + >> +#ifndef CONFIG_USER_ONLY >> +extern const struct VMStateDescription vms_avr_cpu; >> +#endif >> + >> +void avr_cpu_do_interrupt(CPUState *cpu); >> +bool avr_cpu_exec_interrupt(CPUState *cpu, int int_req); >> +hwaddr avr_cpu_get_phys_page_debug(CPUState *cpu, vaddr addr); >> +int avr_cpu_gdb_read_register(CPUState *cpu, uint8_t *buf, int reg); >> +int avr_cpu_gdb_write_register(CPUState *cpu, uint8_t *buf, int reg); >> + >> +static inline int avr_feature(CPUAVRState *env, int feature) >> +{ >> + return (env->features & (1U << feature)) != 0; >> +} >> + >> +static inline void avr_set_feature(CPUAVRState *env, int feature) >> +{ >> + env->features |= (1U << feature); >> +} >> + >> +#define cpu_list avr_cpu_list >> +#define cpu_signal_handler cpu_avr_signal_handler >> +#define cpu_mmu_index avr_cpu_mmu_index >> + >> +static inline int avr_cpu_mmu_index(CPUAVRState *env, bool ifetch) >> +{ >> + return ifetch ? MMU_CODE_IDX : MMU_DATA_IDX; >> +} >> + >> +void avr_cpu_tcg_init(void); >> + >> +void avr_cpu_list(void); >> +int cpu_avr_exec(CPUState *cpu); >> +int cpu_avr_signal_handler(int host_signum, void *pinfo, void *puc); >> +int avr_cpu_handle_mmu_fault(CPUState *cpu, vaddr address, int size, >> + int rw, int mmu_idx); >> +int avr_cpu_memory_rw_debug(CPUState *cs, vaddr address, uint8_t *buf, >> + int len, bool is_write); >> + >> +enum { >> + TB_FLAGS_FULL_ACCESS = 1, >> + TB_FLAGS_SKIP = 2, >> +}; >> + >> +static inline void cpu_get_tb_cpu_state(CPUAVRState *env, target_ulong >> *pc, >> + target_ulong *cs_base, uint32_t *pflags) >> +{ >> + uint32_t flags = 0; >> + >> + *pc = env->pc_w * 2; >> + *cs_base = 0; >> + >> + if (env->fullacc) { >> + flags |= TB_FLAGS_FULL_ACCESS; >> + } >> + if (env->skip) { >> + flags |= TB_FLAGS_SKIP; >> + } >> + >> + *pflags = flags; >> +} >> + >> +static inline int cpu_interrupts_enabled(CPUAVRState *env) >> +{ >> + return env->sregI != 0; >> +} >> + >> +static inline uint8_t cpu_get_sreg(CPUAVRState *env) >> +{ >> + uint8_t sreg; >> + sreg = (env->sregC & 0x01) << 0 >> + | (env->sregZ == 0 ? 1 : 0) << 1 >> + | (env->sregN) << 2 >> + | (env->sregV) << 3 >> + | (env->sregS) << 4 >> + | (env->sregH) << 5 >> + | (env->sregT) << 6 >> + | (env->sregI) << 7; >> + return sreg; >> +} >> + >> +static inline void cpu_set_sreg(CPUAVRState *env, uint8_t sreg) >> +{ >> + env->sregC = (sreg >> 0) & 0x01; >> + env->sregZ = (sreg >> 1) & 0x01 ? 0 : 1; >> + env->sregN = (sreg >> 2) & 0x01; >> + env->sregV = (sreg >> 3) & 0x01; >> + env->sregS = (sreg >> 4) & 0x01; >> + env->sregH = (sreg >> 5) & 0x01; >> + env->sregT = (sreg >> 6) & 0x01; >> + env->sregI = (sreg >> 7) & 0x01; >> +} >> + >> +bool avr_cpu_tlb_fill(CPUState *cs, vaddr address, int size, >> + MMUAccessType access_type, int mmu_idx, >> + bool probe, uintptr_t retaddr); >> + >> +typedef CPUAVRState CPUArchState; >> +typedef AVRCPU ArchCPU; >> + >> +#include "exec/cpu-all.h" >> + >> +#endif /* !defined (QEMU_AVR_CPU_H) */ >> diff --git a/target/avr/gdbstub.c b/target/avr/gdbstub.c >> new file mode 100644 >> index 0000000000..20a5252482 >> --- /dev/null >> +++ b/target/avr/gdbstub.c >> @@ -0,0 +1,85 @@ >> +/* >> + * QEMU AVR CPU >> + * >> + * Copyright (c) 2019 Michael Rolnik >> + * >> + * This library is free software; you can redistribute it and/or >> + * modify it under the terms of the GNU Lesser General Public >> + * License as published by the Free Software Foundation; either >> + * version 2.1 of the License, or (at your option) any later version. >> + * >> + * This library is distributed in the hope that it will be useful, >> + * but WITHOUT ANY WARRANTY; without even the implied warranty of >> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU >> + * Lesser General Public License for more details. >> + * >> + * You should have received a copy of the GNU Lesser General Public >> + * License along with this library; if not, see >> + * <http://www.gnu.org/licenses/lgpl-2.1.html> >> + */ >> + >> +#include "qemu/osdep.h" >> +#include "qemu-common.h" >> +#include "exec/gdbstub.h" >> + >> +int avr_cpu_gdb_read_register(CPUState *cs, uint8_t *mem_buf, int n) >> +{ >> + AVRCPU *cpu = AVR_CPU(cs); >> + CPUAVRState *env = &cpu->env; >> + >> + /* R */ >> + if (n < 32) { >> + return gdb_get_reg8(mem_buf, env->r[n]); >> + } >> + >> + /* SREG */ >> + if (n == 32) { >> + uint8_t sreg = cpu_get_sreg(env); >> + >> + return gdb_get_reg8(mem_buf, sreg); >> + } >> + >> + /* SP */ >> + if (n == 33) { >> + return gdb_get_reg16(mem_buf, env->sp & 0x0000ffff); >> + } >> + >> + /* PC */ >> + if (n == 34) { >> + return gdb_get_reg32(mem_buf, env->pc_w * 2); >> + } >> + >> + return 0; >> +} >> + >> +int avr_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n) >> +{ >> + AVRCPU *cpu = AVR_CPU(cs); >> + CPUAVRState *env = &cpu->env; >> + >> + /* R */ >> + if (n < 32) { >> + env->r[n] = *mem_buf; >> + return 1; >> + } >> + >> + /* SREG */ >> + if (n == 32) { >> + cpu_set_sreg(env, *mem_buf); >> + return 1; >> + } >> + >> + /* SP */ >> + if (n == 33) { >> + env->sp = lduw_p(mem_buf); >> + return 2; >> + } >> + >> + /* PC */ >> + if (n == 34) { >> + env->pc_w = ldl_p(mem_buf) / 2; >> + return 4; >> + } >> + >> + return 0; >> +} >> diff --git a/target/avr/machine.c b/target/avr/machine.c >> new file mode 100644 >> index 0000000000..f6dcda7adc >> --- /dev/null >> +++ b/target/avr/machine.c >> @@ -0,0 +1,121 @@ >> +/* >> + * QEMU AVR CPU >> + * >> + * Copyright (c) 2019 Michael Rolnik >> + * >> + * This library is free software; you can redistribute it and/or >> + * modify it under the terms of the GNU Lesser General Public >> + * License as published by the Free Software Foundation; either >> + * version 2.1 of the License, or (at your option) any later version. >> + * >> + * This library is distributed in the hope that it will be useful, >> + * but WITHOUT ANY WARRANTY; without even the implied warranty of >> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU >> + * Lesser General Public License for more details. >> + * >> + * You should have received a copy of the GNU Lesser General Public >> + * License along with this library; if not, see >> + * <http://www.gnu.org/licenses/lgpl-2.1.html> >> + */ >> + >> +#include "qemu/osdep.h" >> +#include "cpu.h" >> +#include "migration/cpu.h" >> + >> +static int get_sreg(QEMUFile *f, void *opaque, size_t size, >> + const VMStateField *field) >> +{ >> + CPUAVRState *env = opaque; >> + uint8_t sreg; >> + >> + sreg = qemu_get_byte(f); >> + cpu_set_sreg(env, sreg); >> + return 0; >> +} >> + >> +static int put_sreg( >> + QEMUFile *f, void *opaque, size_t size, >> + const VMStateField *field, QJSON *vmdesc) >> +{ >> + CPUAVRState *env = opaque; >> + uint8_t sreg = cpu_get_sreg(env); >> + >> + qemu_put_byte(f, sreg); >> + return 0; >> +} >> + >> +static const VMStateInfo vms_sreg = { >> + .name = "sreg", >> + .get = get_sreg, >> + .put = put_sreg, >> +}; >> + >> +static int get_segment( >> + QEMUFile *f, void *opaque, size_t size, const VMStateField *field) >> +{ >> + uint32_t *ramp = opaque; >> + uint8_t temp; >> + >> + temp = qemu_get_byte(f); >> + *ramp = ((uint32_t)temp) << 16; >> + return 0; >> +} >> + >> +static int put_segment( >> + QEMUFile *f, void *opaque, size_t size, >> + const VMStateField *field, QJSON *vmdesc) >> +{ >> + uint32_t *ramp = opaque; >> + uint8_t temp = *ramp >> 16; >> + >> + qemu_put_byte(f, temp); >> + return 0; >> +} >> + >> +static const VMStateInfo vms_rampD = { >> + .name = "rampD", >> + .get = get_segment, >> + .put = put_segment, >> +}; >> +static const VMStateInfo vms_rampX = { >> + .name = "rampX", >> + .get = get_segment, >> + .put = put_segment, >> +}; >> +static const VMStateInfo vms_rampY = { >> + .name = "rampY", >> + .get = get_segment, >> + .put = put_segment, >> +}; >> +static const VMStateInfo vms_rampZ = { >> + .name = "rampZ", >> + .get = get_segment, >> + .put = put_segment, >> +}; >> +static const VMStateInfo vms_eind = { >> + .name = "eind", >> + .get = get_segment, >> + .put = put_segment, >> +}; >> + >> +const VMStateDescription vms_avr_cpu = { >> + .name = "cpu", >> + .version_id = 0, >> + .minimum_version_id = 0, >> + .fields = (VMStateField[]) { >> + VMSTATE_UINT32(env.pc_w, AVRCPU), >> + VMSTATE_UINT32(env.sp, AVRCPU), >> + VMSTATE_UINT32(env.skip, AVRCPU), >> + >> + VMSTATE_UINT32_ARRAY(env.r, AVRCPU, NO_CPU_REGISTERS), >> + >> + VMSTATE_SINGLE(env, AVRCPU, 0, vms_sreg, CPUAVRState), >> + VMSTATE_SINGLE(env.rampD, AVRCPU, 0, vms_rampD, uint32_t), >> + VMSTATE_SINGLE(env.rampX, AVRCPU, 0, vms_rampX, uint32_t), >> + VMSTATE_SINGLE(env.rampY, AVRCPU, 0, vms_rampY, uint32_t), >> + VMSTATE_SINGLE(env.rampZ, AVRCPU, 0, vms_rampZ, uint32_t), >> + VMSTATE_SINGLE(env.eind, AVRCPU, 0, vms_eind, uint32_t), >> + >> + VMSTATE_END_OF_LIST() >> + } >> +}; >> -- >> 2.17.2 (Apple Git-113) >> >>
