From 10c339a07d42fcccbccd3f8a5e9c94ccb51fe3e4 Mon Sep 17 00:00:00 2001 From: Alexander Graf Date: Sat, 5 Dec 2009 12:44:26 +0100 Subject: [PATCH] Add support for S390x system emulation Let's enable the basics for system emulation so we can run virtual machines with KVM! Signed-off-by: Alexander Graf Signed-off-by: Aurelien Jarno --- default-configs/s390x-softmmu.mak | 0 target-s390x/cpu.h | 153 +++++++++++++++++++++++++++++- target-s390x/exec.h | 5 + target-s390x/helper.c | 22 +++++ target-s390x/machine.c | 30 ++++++ 5 files changed, 208 insertions(+), 2 deletions(-) create mode 100644 default-configs/s390x-softmmu.mak create mode 100644 target-s390x/machine.c diff --git a/default-configs/s390x-softmmu.mak b/default-configs/s390x-softmmu.mak new file mode 100644 index 0000000000..e69de29bb2 diff --git a/target-s390x/cpu.h b/target-s390x/cpu.h index 9b10518fe7..0e75e1caac 100644 --- a/target-s390x/cpu.h +++ b/target-s390x/cpu.h @@ -30,8 +30,7 @@ #include "softfloat.h" -#define NB_MMU_MODES 2 // guess -#define MMU_USER_IDX 0 // guess +#define NB_MMU_MODES 2 typedef union FPReg { struct { @@ -77,6 +76,15 @@ static inline void cpu_clone_regs(CPUState *env, target_ulong newsp) } #endif +#define MMU_MODE0_SUFFIX _kernel +#define MMU_MODE1_SUFFIX _user +#define MMU_USER_IDX 1 +static inline int cpu_mmu_index (CPUState *env) +{ + /* XXX: Currently we don't implement virtual memory */ + return 0; +} + CPUS390XState *cpu_s390x_init(const char *cpu_model); int cpu_s390x_exec(CPUS390XState *s); void cpu_s390x_close(CPUS390XState *s); @@ -92,6 +100,13 @@ int cpu_s390x_handle_mmu_fault (CPUS390XState *env, target_ulong address, int rw #define TARGET_PAGE_BITS 12 +#ifndef CONFIG_USER_ONLY +extern int s390_virtio_hypercall(CPUState *env); +extern void kvm_s390_virtio_irq(CPUState *env, int config_change, uint64_t token); +extern CPUState *s390_cpu_addr2state(uint16_t cpu_addr); +#endif + + #define cpu_init cpu_s390x_init #define cpu_exec cpu_s390x_exec #define cpu_gen_code cpu_s390x_gen_code @@ -119,4 +134,138 @@ static inline void cpu_get_tb_cpu_state(CPUState* env, target_ulong *pc, *cs_base = 0; *flags = env->psw.mask; } + +/* Program Status Word. */ +#define S390_PSWM_REGNUM 0 +#define S390_PSWA_REGNUM 1 +/* General Purpose Registers. */ +#define S390_R0_REGNUM 2 +#define S390_R1_REGNUM 3 +#define S390_R2_REGNUM 4 +#define S390_R3_REGNUM 5 +#define S390_R4_REGNUM 6 +#define S390_R5_REGNUM 7 +#define S390_R6_REGNUM 8 +#define S390_R7_REGNUM 9 +#define S390_R8_REGNUM 10 +#define S390_R9_REGNUM 11 +#define S390_R10_REGNUM 12 +#define S390_R11_REGNUM 13 +#define S390_R12_REGNUM 14 +#define S390_R13_REGNUM 15 +#define S390_R14_REGNUM 16 +#define S390_R15_REGNUM 17 +/* Access Registers. */ +#define S390_A0_REGNUM 18 +#define S390_A1_REGNUM 19 +#define S390_A2_REGNUM 20 +#define S390_A3_REGNUM 21 +#define S390_A4_REGNUM 22 +#define S390_A5_REGNUM 23 +#define S390_A6_REGNUM 24 +#define S390_A7_REGNUM 25 +#define S390_A8_REGNUM 26 +#define S390_A9_REGNUM 27 +#define S390_A10_REGNUM 28 +#define S390_A11_REGNUM 29 +#define S390_A12_REGNUM 30 +#define S390_A13_REGNUM 31 +#define S390_A14_REGNUM 32 +#define S390_A15_REGNUM 33 +/* Floating Point Control Word. */ +#define S390_FPC_REGNUM 34 +/* Floating Point Registers. */ +#define S390_F0_REGNUM 35 +#define S390_F1_REGNUM 36 +#define S390_F2_REGNUM 37 +#define S390_F3_REGNUM 38 +#define S390_F4_REGNUM 39 +#define S390_F5_REGNUM 40 +#define S390_F6_REGNUM 41 +#define S390_F7_REGNUM 42 +#define S390_F8_REGNUM 43 +#define S390_F9_REGNUM 44 +#define S390_F10_REGNUM 45 +#define S390_F11_REGNUM 46 +#define S390_F12_REGNUM 47 +#define S390_F13_REGNUM 48 +#define S390_F14_REGNUM 49 +#define S390_F15_REGNUM 50 +/* Total. */ +#define S390_NUM_REGS 51 + +/* Pseudo registers -- PC and condition code. */ +#define S390_PC_REGNUM S390_NUM_REGS +#define S390_CC_REGNUM (S390_NUM_REGS+1) +#define S390_NUM_PSEUDO_REGS 2 +#define S390_NUM_TOTAL_REGS (S390_NUM_REGS+2) + + + +/* Program Status Word. */ +#define S390_PSWM_REGNUM 0 +#define S390_PSWA_REGNUM 1 +/* General Purpose Registers. */ +#define S390_R0_REGNUM 2 +#define S390_R1_REGNUM 3 +#define S390_R2_REGNUM 4 +#define S390_R3_REGNUM 5 +#define S390_R4_REGNUM 6 +#define S390_R5_REGNUM 7 +#define S390_R6_REGNUM 8 +#define S390_R7_REGNUM 9 +#define S390_R8_REGNUM 10 +#define S390_R9_REGNUM 11 +#define S390_R10_REGNUM 12 +#define S390_R11_REGNUM 13 +#define S390_R12_REGNUM 14 +#define S390_R13_REGNUM 15 +#define S390_R14_REGNUM 16 +#define S390_R15_REGNUM 17 +/* Access Registers. */ +#define S390_A0_REGNUM 18 +#define S390_A1_REGNUM 19 +#define S390_A2_REGNUM 20 +#define S390_A3_REGNUM 21 +#define S390_A4_REGNUM 22 +#define S390_A5_REGNUM 23 +#define S390_A6_REGNUM 24 +#define S390_A7_REGNUM 25 +#define S390_A8_REGNUM 26 +#define S390_A9_REGNUM 27 +#define S390_A10_REGNUM 28 +#define S390_A11_REGNUM 29 +#define S390_A12_REGNUM 30 +#define S390_A13_REGNUM 31 +#define S390_A14_REGNUM 32 +#define S390_A15_REGNUM 33 +/* Floating Point Control Word. */ +#define S390_FPC_REGNUM 34 +/* Floating Point Registers. */ +#define S390_F0_REGNUM 35 +#define S390_F1_REGNUM 36 +#define S390_F2_REGNUM 37 +#define S390_F3_REGNUM 38 +#define S390_F4_REGNUM 39 +#define S390_F5_REGNUM 40 +#define S390_F6_REGNUM 41 +#define S390_F7_REGNUM 42 +#define S390_F8_REGNUM 43 +#define S390_F9_REGNUM 44 +#define S390_F10_REGNUM 45 +#define S390_F11_REGNUM 46 +#define S390_F12_REGNUM 47 +#define S390_F13_REGNUM 48 +#define S390_F14_REGNUM 49 +#define S390_F15_REGNUM 50 +/* Total. */ +#define S390_NUM_REGS 51 + +/* Pseudo registers -- PC and condition code. */ +#define S390_PC_REGNUM S390_NUM_REGS +#define S390_CC_REGNUM (S390_NUM_REGS+1) +#define S390_NUM_PSEUDO_REGS 2 +#define S390_NUM_TOTAL_REGS (S390_NUM_REGS+2) + + #endif diff --git a/target-s390x/exec.h b/target-s390x/exec.h index 5198359804..13dc7dd066 100644 --- a/target-s390x/exec.h +++ b/target-s390x/exec.h @@ -22,9 +22,14 @@ register struct CPUS390XState *env asm(AREG0); +#include "config.h" #include "cpu.h" #include "exec-all.h" +#if !defined(CONFIG_USER_ONLY) +#include "softmmu_exec.h" +#endif /* !defined(CONFIG_USER_ONLY) */ + static inline int cpu_has_work(CPUState *env) { return env->interrupt_request & CPU_INTERRUPT_HARD; // guess diff --git a/target-s390x/helper.c b/target-s390x/helper.c index 4a198ae32f..4c2dc82115 100644 --- a/target-s390x/helper.c +++ b/target-s390x/helper.c @@ -27,6 +27,9 @@ #include "gdbstub.h" #include "qemu-common.h" +#include +#include "kvm.h" + CPUS390XState *cpu_s390x_init(const char *cpu_model) { CPUS390XState *env; @@ -60,3 +63,22 @@ void cpu_reset(CPUS390XState *env) /* FIXME: reset vector? */ tlb_flush(env, 1); } + +#ifndef CONFIG_USER_ONLY + +int cpu_s390x_handle_mmu_fault (CPUState *env, target_ulong address, int rw, + int mmu_idx, int is_softmmu) +{ + target_ulong phys; + int prot; + + /* XXX: implement mmu */ + + phys = address; + prot = PAGE_READ | PAGE_WRITE; + + return tlb_set_page(env, address & TARGET_PAGE_MASK, + phys & TARGET_PAGE_MASK, prot, + mmu_idx, is_softmmu); +} +#endif /* CONFIG_USER_ONLY */ diff --git a/target-s390x/machine.c b/target-s390x/machine.c new file mode 100644 index 0000000000..3e79be6d56 --- /dev/null +++ b/target-s390x/machine.c @@ -0,0 +1,30 @@ +/* + * QEMU S390x machine definitions + * + * Copyright (c) 2009 Alexander Graf + * + * 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 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 . + */ + +#include "hw/hw.h" +#include "hw/boards.h" + +void cpu_save(QEMUFile *f, void *opaque) +{ +} + +int cpu_load(QEMUFile *f, void *opaque, int version_id) +{ + return 0; +}