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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 <agraf@suse.de>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
This commit is contained in:
Alexander Graf 2009-12-05 12:44:26 +01:00 committed by Aurelien Jarno
parent 6b02494d64
commit 10c339a07d
5 changed files with 208 additions and 2 deletions
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0
default-configs/s390x-softmmu.mak Normal file
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153
target-s390x/cpu.h
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@ -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

5
target-s390x/exec.h
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@ -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

22
target-s390x/helper.c
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@ -27,6 +27,9 @@
#include "gdbstub.h"
#include "qemu-common.h"
#include <linux/kvm.h>
#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 */

30
target-s390x/machine.c Normal file
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@ -0,0 +1,30 @@
/*
* QEMU S390x machine definitions
*
* Copyright (c) 2009 Alexander Graf <agraf@suse.de>
*
* 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 <http://www.gnu.org/licenses/>.
*/
#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;
}