Add qemu 2.4.0

Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5
Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>

1 files changed, 493 insertions, 0 deletions

diff --git a/qemu/target-alpha/cpu.h b/qemu/target-alpha/cpu.h
new file mode 100644
index 000000000..91c56d6bc
--- /dev/null
+++ b/qemu/target-alpha/cpu.h
@@ -0,0 +1,493 @@
+/*
+ *  Alpha emulation cpu definitions for qemu.
+ *
+ *  Copyright (c) 2007 Jocelyn Mayer
+ *
+ * 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/>.
+ */
+
+#if !defined (__CPU_ALPHA_H__)
+#define __CPU_ALPHA_H__
+
+#include "config.h"
+#include "qemu-common.h"
+
+#define TARGET_LONG_BITS 64
+#define ALIGNED_ONLY
+
+#define CPUArchState struct CPUAlphaState
+
+#include "exec/cpu-defs.h"
+
+#include "fpu/softfloat.h"
+
+#define ELF_MACHINE     EM_ALPHA
+
+#define ICACHE_LINE_SIZE 32
+#define DCACHE_LINE_SIZE 32
+
+#define TARGET_PAGE_BITS 13
+
+#ifdef CONFIG_USER_ONLY
+/* ??? The kernel likes to give addresses in high memory.  If the host has
+   more virtual address space than the guest, this can lead to impossible
+   allocations.  Honor the long-standing assumption that only kernel addrs
+   are negative, but otherwise allow allocations anywhere.  This could lead
+   to tricky emulation problems for programs doing tagged addressing, but
+   that's far fewer than encounter the impossible allocation problem.  */
+#define TARGET_PHYS_ADDR_SPACE_BITS  63
+#define TARGET_VIRT_ADDR_SPACE_BITS  63
+#else
+/* ??? EV4 has 34 phys addr bits, EV5 has 40, EV6 has 44.  */
+#define TARGET_PHYS_ADDR_SPACE_BITS  44
+#define TARGET_VIRT_ADDR_SPACE_BITS  (30 + TARGET_PAGE_BITS)
+#endif
+
+/* Alpha major type */
+enum {
+    ALPHA_EV3  = 1,
+    ALPHA_EV4  = 2,
+    ALPHA_SIM  = 3,
+    ALPHA_LCA  = 4,
+    ALPHA_EV5  = 5, /* 21164 */
+    ALPHA_EV45 = 6, /* 21064A */
+    ALPHA_EV56 = 7, /* 21164A */
+};
+
+/* EV4 minor type */
+enum {
+    ALPHA_EV4_2 = 0,
+    ALPHA_EV4_3 = 1,
+};
+
+/* LCA minor type */
+enum {
+    ALPHA_LCA_1 = 1, /* 21066 */
+    ALPHA_LCA_2 = 2, /* 20166 */
+    ALPHA_LCA_3 = 3, /* 21068 */
+    ALPHA_LCA_4 = 4, /* 21068 */
+    ALPHA_LCA_5 = 5, /* 21066A */
+    ALPHA_LCA_6 = 6, /* 21068A */
+};
+
+/* EV5 minor type */
+enum {
+    ALPHA_EV5_1 = 1, /* Rev BA, CA */
+    ALPHA_EV5_2 = 2, /* Rev DA, EA */
+    ALPHA_EV5_3 = 3, /* Pass 3 */
+    ALPHA_EV5_4 = 4, /* Pass 3.2 */
+    ALPHA_EV5_5 = 5, /* Pass 4 */
+};
+
+/* EV45 minor type */
+enum {
+    ALPHA_EV45_1 = 1, /* Pass 1 */
+    ALPHA_EV45_2 = 2, /* Pass 1.1 */
+    ALPHA_EV45_3 = 3, /* Pass 2 */
+};
+
+/* EV56 minor type */
+enum {
+    ALPHA_EV56_1 = 1, /* Pass 1 */
+    ALPHA_EV56_2 = 2, /* Pass 2 */
+};
+
+enum {
+    IMPLVER_2106x = 0, /* EV4, EV45 & LCA45 */
+    IMPLVER_21164 = 1, /* EV5, EV56 & PCA45 */
+    IMPLVER_21264 = 2, /* EV6, EV67 & EV68x */
+    IMPLVER_21364 = 3, /* EV7 & EV79 */
+};
+
+enum {
+    AMASK_BWX      = 0x00000001,
+    AMASK_FIX      = 0x00000002,
+    AMASK_CIX      = 0x00000004,
+    AMASK_MVI      = 0x00000100,
+    AMASK_TRAP     = 0x00000200,
+    AMASK_PREFETCH = 0x00001000,
+};
+
+enum {
+    VAX_ROUND_NORMAL = 0,
+    VAX_ROUND_CHOPPED,
+};
+
+enum {
+    IEEE_ROUND_NORMAL = 0,
+    IEEE_ROUND_DYNAMIC,
+    IEEE_ROUND_PLUS,
+    IEEE_ROUND_MINUS,
+    IEEE_ROUND_CHOPPED,
+};
+
+/* IEEE floating-point operations encoding */
+/* Trap mode */
+enum {
+    FP_TRAP_I   = 0x0,
+    FP_TRAP_U   = 0x1,
+    FP_TRAP_S  = 0x4,
+    FP_TRAP_SU  = 0x5,
+    FP_TRAP_SUI = 0x7,
+};
+
+/* Rounding mode */
+enum {
+    FP_ROUND_CHOPPED = 0x0,
+    FP_ROUND_MINUS   = 0x1,
+    FP_ROUND_NORMAL  = 0x2,
+    FP_ROUND_DYNAMIC = 0x3,
+};
+
+/* FPCR bits -- right-shifted 32 so we can use a uint32_t.  */
+#define FPCR_SUM                (1U << (63 - 32))
+#define FPCR_INED               (1U << (62 - 32))
+#define FPCR_UNFD               (1U << (61 - 32))
+#define FPCR_UNDZ               (1U << (60 - 32))
+#define FPCR_DYN_SHIFT          (58 - 32)
+#define FPCR_DYN_CHOPPED        (0U << FPCR_DYN_SHIFT)
+#define FPCR_DYN_MINUS          (1U << FPCR_DYN_SHIFT)
+#define FPCR_DYN_NORMAL         (2U << FPCR_DYN_SHIFT)
+#define FPCR_DYN_PLUS           (3U << FPCR_DYN_SHIFT)
+#define FPCR_DYN_MASK           (3U << FPCR_DYN_SHIFT)
+#define FPCR_IOV                (1U << (57 - 32))
+#define FPCR_INE                (1U << (56 - 32))
+#define FPCR_UNF                (1U << (55 - 32))
+#define FPCR_OVF                (1U << (54 - 32))
+#define FPCR_DZE                (1U << (53 - 32))
+#define FPCR_INV                (1U << (52 - 32))
+#define FPCR_OVFD               (1U << (51 - 32))
+#define FPCR_DZED               (1U << (50 - 32))
+#define FPCR_INVD               (1U << (49 - 32))
+#define FPCR_DNZ                (1U << (48 - 32))
+#define FPCR_DNOD               (1U << (47 - 32))
+#define FPCR_STATUS_MASK        (FPCR_IOV | FPCR_INE | FPCR_UNF \
+                                 | FPCR_OVF | FPCR_DZE | FPCR_INV)
+
+/* The silly software trap enables implemented by the kernel emulation.
+   These are more or less architecturally required, since the real hardware
+   has read-as-zero bits in the FPCR when the features aren't implemented.
+   For the purposes of QEMU, we pretend the FPCR can hold everything.  */
+#define SWCR_TRAP_ENABLE_INV    (1U << 1)
+#define SWCR_TRAP_ENABLE_DZE    (1U << 2)
+#define SWCR_TRAP_ENABLE_OVF    (1U << 3)
+#define SWCR_TRAP_ENABLE_UNF    (1U << 4)
+#define SWCR_TRAP_ENABLE_INE    (1U << 5)
+#define SWCR_TRAP_ENABLE_DNO    (1U << 6)
+#define SWCR_TRAP_ENABLE_MASK   ((1U << 7) - (1U << 1))
+
+#define SWCR_MAP_DMZ            (1U << 12)
+#define SWCR_MAP_UMZ            (1U << 13)
+#define SWCR_MAP_MASK           (SWCR_MAP_DMZ | SWCR_MAP_UMZ)
+
+#define SWCR_STATUS_INV         (1U << 17)
+#define SWCR_STATUS_DZE         (1U << 18)
+#define SWCR_STATUS_OVF         (1U << 19)
+#define SWCR_STATUS_UNF         (1U << 20)
+#define SWCR_STATUS_INE         (1U << 21)
+#define SWCR_STATUS_DNO         (1U << 22)
+#define SWCR_STATUS_MASK        ((1U << 23) - (1U << 17))
+
+#define SWCR_MASK  (SWCR_TRAP_ENABLE_MASK | SWCR_MAP_MASK | SWCR_STATUS_MASK)
+
+/* MMU modes definitions */
+
+/* Alpha has 5 MMU modes: PALcode, kernel, executive, supervisor, and user.
+   The Unix PALcode only exposes the kernel and user modes; presumably
+   executive and supervisor are used by VMS.
+
+   PALcode itself uses physical mode for code and kernel mode for data;
+   there are PALmode instructions that can access data via physical mode
+   or via an os-installed "alternate mode", which is one of the 4 above.
+
+   QEMU does not currently properly distinguish between code/data when
+   looking up addresses.  To avoid having to address this issue, our
+   emulated PALcode will cheat and use the KSEG mapping for its code+data
+   rather than physical addresses.
+
+   Moreover, we're only emulating Unix PALcode, and not attempting VMS.
+
+   All of which allows us to drop all but kernel and user modes.
+   Elide the unused MMU modes to save space.  */
+
+#define NB_MMU_MODES 2
+
+#define MMU_MODE0_SUFFIX _kernel
+#define MMU_MODE1_SUFFIX _user
+#define MMU_KERNEL_IDX   0
+#define MMU_USER_IDX     1
+
+typedef struct CPUAlphaState CPUAlphaState;
+
+struct CPUAlphaState {
+    uint64_t ir[31];
+    float64 fir[31];
+    uint64_t pc;
+    uint64_t unique;
+    uint64_t lock_addr;
+    uint64_t lock_st_addr;
+    uint64_t lock_value;
+
+    /* The FPCR, and disassembled portions thereof.  */
+    uint32_t fpcr;
+    uint32_t fpcr_exc_enable;
+    float_status fp_status;
+    uint8_t fpcr_dyn_round;
+    uint8_t fpcr_flush_to_zero;
+
+    /* The Internal Processor Registers.  Some of these we assume always
+       exist for use in user-mode.  */
+    uint8_t ps;
+    uint8_t intr_flag;
+    uint8_t pal_mode;
+    uint8_t fen;
+
+    uint32_t pcc_ofs;
+
+    /* These pass data from the exception logic in the translator and
+       helpers to the OS entry point.  This is used for both system
+       emulation and user-mode.  */
+    uint64_t trap_arg0;
+    uint64_t trap_arg1;
+    uint64_t trap_arg2;
+
+#if !defined(CONFIG_USER_ONLY)
+    /* The internal data required by our emulation of the Unix PALcode.  */
+    uint64_t exc_addr;
+    uint64_t palbr;
+    uint64_t ptbr;
+    uint64_t vptptr;
+    uint64_t sysval;
+    uint64_t usp;
+    uint64_t shadow[8];
+    uint64_t scratch[24];
+#endif
+
+    /* This alarm doesn't exist in real hardware; we wish it did.  */
+    uint64_t alarm_expire;
+
+    /* Those resources are used only in QEMU core */
+    CPU_COMMON
+
+    int error_code;
+
+    uint32_t features;
+    uint32_t amask;
+    int implver;
+};
+
+#define cpu_list alpha_cpu_list
+#define cpu_exec cpu_alpha_exec
+#define cpu_gen_code cpu_alpha_gen_code
+#define cpu_signal_handler cpu_alpha_signal_handler
+
+#include "exec/cpu-all.h"
+#include "cpu-qom.h"
+
+enum {
+    FEATURE_ASN    = 0x00000001,
+    FEATURE_SPS    = 0x00000002,
+    FEATURE_VIRBND = 0x00000004,
+    FEATURE_TBCHK  = 0x00000008,
+};
+
+enum {
+    EXCP_RESET,
+    EXCP_MCHK,
+    EXCP_SMP_INTERRUPT,
+    EXCP_CLK_INTERRUPT,
+    EXCP_DEV_INTERRUPT,
+    EXCP_MMFAULT,
+    EXCP_UNALIGN,
+    EXCP_OPCDEC,
+    EXCP_ARITH,
+    EXCP_FEN,
+    EXCP_CALL_PAL,
+    /* For Usermode emulation.  */
+    EXCP_STL_C,
+    EXCP_STQ_C,
+};
+
+/* Alpha-specific interrupt pending bits.  */
+#define CPU_INTERRUPT_TIMER	CPU_INTERRUPT_TGT_EXT_0
+#define CPU_INTERRUPT_SMP	CPU_INTERRUPT_TGT_EXT_1
+#define CPU_INTERRUPT_MCHK	CPU_INTERRUPT_TGT_EXT_2
+
+/* OSF/1 Page table bits.  */
+enum {
+    PTE_VALID = 0x0001,
+    PTE_FOR   = 0x0002,  /* used for page protection (fault on read) */
+    PTE_FOW   = 0x0004,  /* used for page protection (fault on write) */
+    PTE_FOE   = 0x0008,  /* used for page protection (fault on exec) */
+    PTE_ASM   = 0x0010,
+    PTE_KRE   = 0x0100,
+    PTE_URE   = 0x0200,
+    PTE_KWE   = 0x1000,
+    PTE_UWE   = 0x2000
+};
+
+/* Hardware interrupt (entInt) constants.  */
+enum {
+    INT_K_IP,
+    INT_K_CLK,
+    INT_K_MCHK,
+    INT_K_DEV,
+    INT_K_PERF,
+};
+
+/* Memory management (entMM) constants.  */
+enum {
+    MM_K_TNV,
+    MM_K_ACV,
+    MM_K_FOR,
+    MM_K_FOE,
+    MM_K_FOW
+};
+
+/* Arithmetic exception (entArith) constants.  */
+enum {
+    EXC_M_SWC = 1,      /* Software completion */
+    EXC_M_INV = 2,      /* Invalid operation */
+    EXC_M_DZE = 4,      /* Division by zero */
+    EXC_M_FOV = 8,      /* Overflow */
+    EXC_M_UNF = 16,     /* Underflow */
+    EXC_M_INE = 32,     /* Inexact result */
+    EXC_M_IOV = 64      /* Integer Overflow */
+};
+
+/* Processor status constants.  */
+enum {
+    /* Low 3 bits are interrupt mask level.  */
+    PS_INT_MASK = 7,
+
+    /* Bits 4 and 5 are the mmu mode.  The VMS PALcode uses all 4 modes;
+       The Unix PALcode only uses bit 4.  */
+    PS_USER_MODE = 8
+};
+
+static inline int cpu_mmu_index(CPUAlphaState *env)
+{
+    if (env->pal_mode) {
+        return MMU_KERNEL_IDX;
+    } else if (env->ps & PS_USER_MODE) {
+        return MMU_USER_IDX;
+    } else {
+        return MMU_KERNEL_IDX;
+    }
+}
+
+enum {
+    IR_V0   = 0,
+    IR_T0   = 1,
+    IR_T1   = 2,
+    IR_T2   = 3,
+    IR_T3   = 4,
+    IR_T4   = 5,
+    IR_T5   = 6,
+    IR_T6   = 7,
+    IR_T7   = 8,
+    IR_S0   = 9,
+    IR_S1   = 10,
+    IR_S2   = 11,
+    IR_S3   = 12,
+    IR_S4   = 13,
+    IR_S5   = 14,
+    IR_S6   = 15,
+    IR_FP   = IR_S6,
+    IR_A0   = 16,
+    IR_A1   = 17,
+    IR_A2   = 18,
+    IR_A3   = 19,
+    IR_A4   = 20,
+    IR_A5   = 21,
+    IR_T8   = 22,
+    IR_T9   = 23,
+    IR_T10  = 24,
+    IR_T11  = 25,
+    IR_RA   = 26,
+    IR_T12  = 27,
+    IR_PV   = IR_T12,
+    IR_AT   = 28,
+    IR_GP   = 29,
+    IR_SP   = 30,
+    IR_ZERO = 31,
+};
+
+void alpha_translate_init(void);
+
+AlphaCPU *cpu_alpha_init(const char *cpu_model);
+
+#define cpu_init(cpu_model) CPU(cpu_alpha_init(cpu_model))
+
+void alpha_cpu_list(FILE *f, fprintf_function cpu_fprintf);
+int cpu_alpha_exec(CPUState *cpu);
+/* 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_alpha_signal_handler(int host_signum, void *pinfo,
+                             void *puc);
+int alpha_cpu_handle_mmu_fault(CPUState *cpu, vaddr address, int rw,
+                               int mmu_idx);
+void do_restore_state(CPUAlphaState *, uintptr_t retaddr);
+void QEMU_NORETURN dynamic_excp(CPUAlphaState *, uintptr_t, int, int);
+void QEMU_NORETURN arith_excp(CPUAlphaState *, uintptr_t, int, uint64_t);
+
+uint64_t cpu_alpha_load_fpcr (CPUAlphaState *env);
+void cpu_alpha_store_fpcr (CPUAlphaState *env, uint64_t val);
+#ifndef CONFIG_USER_ONLY
+void swap_shadow_regs(CPUAlphaState *env);
+QEMU_NORETURN void alpha_cpu_unassigned_access(CPUState *cpu, hwaddr addr,
+                                               bool is_write, bool is_exec,
+                                               int unused, unsigned size);
+#endif
+
+/* Bits in TB->FLAGS that control how translation is processed.  */
+enum {
+    TB_FLAGS_PAL_MODE = 1,
+    TB_FLAGS_FEN = 2,
+    TB_FLAGS_USER_MODE = 8,
+
+    TB_FLAGS_AMASK_SHIFT = 4,
+    TB_FLAGS_AMASK_BWX = AMASK_BWX << TB_FLAGS_AMASK_SHIFT,
+    TB_FLAGS_AMASK_FIX = AMASK_FIX << TB_FLAGS_AMASK_SHIFT,
+    TB_FLAGS_AMASK_CIX = AMASK_CIX << TB_FLAGS_AMASK_SHIFT,
+    TB_FLAGS_AMASK_MVI = AMASK_MVI << TB_FLAGS_AMASK_SHIFT,
+    TB_FLAGS_AMASK_TRAP = AMASK_TRAP << TB_FLAGS_AMASK_SHIFT,
+    TB_FLAGS_AMASK_PREFETCH = AMASK_PREFETCH << TB_FLAGS_AMASK_SHIFT,
+};
+
+static inline void cpu_get_tb_cpu_state(CPUAlphaState *env, target_ulong *pc,
+                                        target_ulong *cs_base, int *pflags)
+{
+    int flags = 0;
+
+    *pc = env->pc;
+    *cs_base = 0;
+
+    if (env->pal_mode) {
+        flags = TB_FLAGS_PAL_MODE;
+    } else {
+        flags = env->ps & PS_USER_MODE;
+    }
+    if (env->fen) {
+        flags |= TB_FLAGS_FEN;
+    }
+    flags |= env->amask << TB_FLAGS_AMASK_SHIFT;
+
+    *pflags = flags;
+}
+
+#include "exec/exec-all.h"
+
+#endif /* !defined (__CPU_ALPHA_H__) */