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Diffstat (limited to 'target-s390x/cpu.h')
-rw-r--r-- | target-s390x/cpu.h | 269 |
1 files changed, 269 insertions, 0 deletions
diff --git a/target-s390x/cpu.h b/target-s390x/cpu.h new file mode 100644 index 0000000..e47c372 --- /dev/null +++ b/target-s390x/cpu.h @@ -0,0 +1,269 @@ +/* + * S/390 virtual CPU header + * + * Copyright (c) 2009 Ulrich Hecht + * + * 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/>. + */ +#ifndef CPU_S390X_H +#define CPU_S390X_H + +#define TARGET_LONG_BITS 64 + +#define ELF_MACHINE EM_S390 + +#define CPUState struct CPUS390XState + +#include "cpu-defs.h" + +#include "softfloat.h" + +#define NB_MMU_MODES 2 + +typedef union FPReg { + struct { +#ifdef WORDS_BIGENDIAN + float32 e; + int32_t __pad; +#else + int32_t __pad; + float32 e; +#endif + }; + float64 d; + uint64_t i; +} FPReg; + +typedef struct CPUS390XState { + uint64_t regs[16]; /* GP registers */ + + uint32_t aregs[16]; /* access registers */ + + uint32_t fpc; /* floating-point control register */ + FPReg fregs[16]; /* FP registers */ + float_status fpu_status; /* passed to softfloat lib */ + + struct { + uint64_t mask; + uint64_t addr; + } psw; + + int cc; /* condition code (0-3) */ + + uint64_t __excp_addr; + + CPU_COMMON +} CPUS390XState; + +#if defined(CONFIG_USER_ONLY) +static inline void cpu_clone_regs(CPUState *env, target_ulong newsp) +{ + if (newsp) + env->regs[15] = newsp; + env->regs[0] = 0; +} +#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); + +/* you can call this signal handler from your SIGBUS and SIGSEGV + signal handlers to inform the virtual CPU of exceptions. non zero + is returned if the signal was handled by the virtual CPU. */ +int cpu_s390x_signal_handler(int host_signum, void *pinfo, + void *puc); +int cpu_s390x_handle_mmu_fault (CPUS390XState *env, target_ulong address, int rw, + int mmu_idx, int is_softmuu); +#define cpu_handle_mmu_fault cpu_s390x_handle_mmu_fault + +#define TARGET_PAGE_BITS 12 + +/* ??? This is certainly wrong for 64-bit s390x, but given that only KVM + emulation actually works, this is good enough for a placeholder. */ +#define TARGET_PHYS_ADDR_SPACE_BITS 32 +#define TARGET_VIRT_ADDR_SPACE_BITS 32 + +#ifndef CONFIG_USER_ONLY +int s390_virtio_hypercall(CPUState *env); +void kvm_s390_virtio_irq(CPUState *env, int config_change, uint64_t token); +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 + +#include "cpu-all.h" + +#define EXCP_OPEX 1 /* operation exception (sigill) */ +#define EXCP_SVC 2 /* supervisor call (syscall) */ +#define EXCP_ADDR 5 /* addressing exception */ +#define EXCP_EXECUTE_SVC 0xff00000 /* supervisor call via execute insn */ + +static inline void cpu_get_tb_cpu_state(CPUState* env, target_ulong *pc, + target_ulong *cs_base, int *flags) +{ + *pc = env->psw.addr; + /* XXX this is correct for user-mode emulation, but needs + * the asce register information as well when softmmu + * is implemented in the future */ + *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 |