Initial import of qemu-2.4.1HEADmaster

1 files changed, 345 insertions, 0 deletions

diff --git a/target-microblaze/cpu.h b/target-microblaze/cpu.h
new file mode 100644
index 00000000..7e20e59b
--- /dev/null
+++ b/target-microblaze/cpu.h
@@ -0,0 +1,345 @@
+/*
+ *  MicroBlaze virtual CPU header
+ *
+ *  Copyright (c) 2009 Edgar E. Iglesias
+ *
+ * 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
+ * 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_MICROBLAZE_H
+#define CPU_MICROBLAZE_H
+
+#include "config.h"
+#include "qemu-common.h"
+
+#define TARGET_LONG_BITS 32
+
+#define CPUArchState struct CPUMBState
+
+#include "exec/cpu-defs.h"
+#include "fpu/softfloat.h"
+struct CPUMBState;
+typedef struct CPUMBState CPUMBState;
+#if !defined(CONFIG_USER_ONLY)
+#include "mmu.h"
+#endif
+
+#define ELF_MACHINE	EM_MICROBLAZE
+
+#define EXCP_MMU        1
+#define EXCP_IRQ        2
+#define EXCP_BREAK      3
+#define EXCP_HW_BREAK   4
+#define EXCP_HW_EXCP    5
+
+/* MicroBlaze-specific interrupt pending bits.  */
+#define CPU_INTERRUPT_NMI       CPU_INTERRUPT_TGT_EXT_3
+
+/* Meanings of the MBCPU object's two inbound GPIO lines */
+#define MB_CPU_IRQ 0
+#define MB_CPU_FIR 1
+
+/* Register aliases. R0 - R15 */
+#define R_SP     1
+#define SR_PC    0
+#define SR_MSR   1
+#define SR_EAR   3
+#define SR_ESR   5
+#define SR_FSR   7
+#define SR_BTR   0xb
+#define SR_EDR   0xd
+
+/* MSR flags.  */
+#define MSR_BE  (1<<0) /* 0x001 */
+#define MSR_IE  (1<<1) /* 0x002 */
+#define MSR_C   (1<<2) /* 0x004 */
+#define MSR_BIP (1<<3) /* 0x008 */
+#define MSR_FSL (1<<4) /* 0x010 */
+#define MSR_ICE (1<<5) /* 0x020 */
+#define MSR_DZ  (1<<6) /* 0x040 */
+#define MSR_DCE (1<<7) /* 0x080 */
+#define MSR_EE  (1<<8) /* 0x100 */
+#define MSR_EIP (1<<9) /* 0x200 */
+#define MSR_PVR (1<<10) /* 0x400 */
+#define MSR_CC  (1<<31)
+
+/* Machine State Register (MSR) Fields */
+#define MSR_UM (1<<11) /* User Mode */
+#define MSR_UMS        (1<<12) /* User Mode Save */
+#define MSR_VM (1<<13) /* Virtual Mode */
+#define MSR_VMS        (1<<14) /* Virtual Mode Save */
+
+#define MSR_KERNEL      MSR_EE|MSR_VM
+//#define MSR_USER     MSR_KERNEL|MSR_UM|MSR_IE
+#define MSR_KERNEL_VMS  MSR_EE|MSR_VMS
+//#define MSR_USER_VMS MSR_KERNEL_VMS|MSR_UMS|MSR_IE
+
+/* Exception State Register (ESR) Fields */
+#define          ESR_DIZ       (1<<11) /* Zone Protection */
+#define          ESR_S         (1<<10) /* Store instruction */
+
+#define          ESR_ESS_FSL_OFFSET     5
+
+#define          ESR_EC_FSL             0
+#define          ESR_EC_UNALIGNED_DATA  1
+#define          ESR_EC_ILLEGAL_OP      2
+#define          ESR_EC_INSN_BUS        3
+#define          ESR_EC_DATA_BUS        4
+#define          ESR_EC_DIVZERO         5
+#define          ESR_EC_FPU             6
+#define          ESR_EC_PRIVINSN        7
+#define          ESR_EC_STACKPROT       7  /* Same as PRIVINSN.  */
+#define          ESR_EC_DATA_STORAGE    8
+#define          ESR_EC_INSN_STORAGE    9
+#define          ESR_EC_DATA_TLB        10
+#define          ESR_EC_INSN_TLB        11
+#define          ESR_EC_MASK            31
+
+/* Floating Point Status Register (FSR) Bits */
+#define FSR_IO          (1<<4) /* Invalid operation */
+#define FSR_DZ          (1<<3) /* Divide-by-zero */
+#define FSR_OF          (1<<2) /* Overflow */
+#define FSR_UF          (1<<1) /* Underflow */
+#define FSR_DO          (1<<0) /* Denormalized operand error */
+
+/* Version reg.  */
+/* Basic PVR mask */
+#define PVR0_PVR_FULL_MASK              0x80000000
+#define PVR0_USE_BARREL_MASK            0x40000000
+#define PVR0_USE_DIV_MASK               0x20000000
+#define PVR0_USE_HW_MUL_MASK            0x10000000
+#define PVR0_USE_FPU_MASK               0x08000000
+#define PVR0_USE_EXC_MASK               0x04000000
+#define PVR0_USE_ICACHE_MASK            0x02000000
+#define PVR0_USE_DCACHE_MASK            0x01000000
+#define PVR0_USE_MMU_MASK               0x00800000
+#define PVR0_USE_BTC			0x00400000
+#define PVR0_ENDI_MASK                  0x00200000
+#define PVR0_FAULT			0x00100000
+#define PVR0_VERSION_MASK               0x0000FF00
+#define PVR0_USER1_MASK                 0x000000FF
+#define PVR0_SPROT_MASK                 0x00000001
+
+/* User 2 PVR mask */
+#define PVR1_USER2_MASK                 0xFFFFFFFF
+
+/* Configuration PVR masks */
+#define PVR2_D_OPB_MASK                 0x80000000
+#define PVR2_D_LMB_MASK                 0x40000000
+#define PVR2_I_OPB_MASK                 0x20000000
+#define PVR2_I_LMB_MASK                 0x10000000
+#define PVR2_INTERRUPT_IS_EDGE_MASK     0x08000000
+#define PVR2_EDGE_IS_POSITIVE_MASK      0x04000000
+#define PVR2_D_PLB_MASK                 0x02000000      /* new */
+#define PVR2_I_PLB_MASK                 0x01000000      /* new */
+#define PVR2_INTERCONNECT               0x00800000      /* new */
+#define PVR2_USE_EXTEND_FSL             0x00080000      /* new */
+#define PVR2_USE_FSL_EXC                0x00040000      /* new */
+#define PVR2_USE_MSR_INSTR              0x00020000
+#define PVR2_USE_PCMP_INSTR             0x00010000
+#define PVR2_AREA_OPTIMISED             0x00008000
+#define PVR2_USE_BARREL_MASK            0x00004000
+#define PVR2_USE_DIV_MASK               0x00002000
+#define PVR2_USE_HW_MUL_MASK            0x00001000
+#define PVR2_USE_FPU_MASK               0x00000800
+#define PVR2_USE_MUL64_MASK             0x00000400
+#define PVR2_USE_FPU2_MASK              0x00000200      /* new */
+#define PVR2_USE_IPLBEXC                0x00000100
+#define PVR2_USE_DPLBEXC                0x00000080
+#define PVR2_OPCODE_0x0_ILL_MASK        0x00000040
+#define PVR2_UNALIGNED_EXC_MASK         0x00000020
+#define PVR2_ILL_OPCODE_EXC_MASK        0x00000010
+#define PVR2_IOPB_BUS_EXC_MASK          0x00000008
+#define PVR2_DOPB_BUS_EXC_MASK          0x00000004
+#define PVR2_DIV_ZERO_EXC_MASK          0x00000002
+#define PVR2_FPU_EXC_MASK               0x00000001
+
+/* Debug and exception PVR masks */
+#define PVR3_DEBUG_ENABLED_MASK         0x80000000
+#define PVR3_NUMBER_OF_PC_BRK_MASK      0x1E000000
+#define PVR3_NUMBER_OF_RD_ADDR_BRK_MASK 0x00380000
+#define PVR3_NUMBER_OF_WR_ADDR_BRK_MASK 0x0000E000
+#define PVR3_FSL_LINKS_MASK             0x00000380
+
+/* ICache config PVR masks */
+#define PVR4_USE_ICACHE_MASK            0x80000000
+#define PVR4_ICACHE_ADDR_TAG_BITS_MASK  0x7C000000
+#define PVR4_ICACHE_USE_FSL_MASK        0x02000000
+#define PVR4_ICACHE_ALLOW_WR_MASK       0x01000000
+#define PVR4_ICACHE_LINE_LEN_MASK       0x00E00000
+#define PVR4_ICACHE_BYTE_SIZE_MASK      0x001F0000
+
+/* DCache config PVR masks */
+#define PVR5_USE_DCACHE_MASK            0x80000000
+#define PVR5_DCACHE_ADDR_TAG_BITS_MASK  0x7C000000
+#define PVR5_DCACHE_USE_FSL_MASK        0x02000000
+#define PVR5_DCACHE_ALLOW_WR_MASK       0x01000000
+#define PVR5_DCACHE_LINE_LEN_MASK       0x00E00000
+#define PVR5_DCACHE_BYTE_SIZE_MASK      0x001F0000
+#define PVR5_DCACHE_WRITEBACK_MASK      0x00004000
+
+/* ICache base address PVR mask */
+#define PVR6_ICACHE_BASEADDR_MASK       0xFFFFFFFF
+
+/* ICache high address PVR mask */
+#define PVR7_ICACHE_HIGHADDR_MASK       0xFFFFFFFF
+
+/* DCache base address PVR mask */
+#define PVR8_DCACHE_BASEADDR_MASK       0xFFFFFFFF
+
+/* DCache high address PVR mask */
+#define PVR9_DCACHE_HIGHADDR_MASK       0xFFFFFFFF
+
+/* Target family PVR mask */
+#define PVR10_TARGET_FAMILY_MASK        0xFF000000
+
+/* MMU descrtiption */
+#define PVR11_USE_MMU                   0xC0000000
+#define PVR11_MMU_ITLB_SIZE             0x38000000
+#define PVR11_MMU_DTLB_SIZE             0x07000000
+#define PVR11_MMU_TLB_ACCESS            0x00C00000
+#define PVR11_MMU_ZONES                 0x003E0000
+/* MSR Reset value PVR mask */
+#define PVR11_MSR_RESET_VALUE_MASK      0x000007FF
+
+#define C_PVR_NONE                      0
+#define C_PVR_BASIC                     1
+#define C_PVR_FULL                      2
+
+/* CPU flags.  */
+
+/* Condition codes.  */
+#define CC_GE  5
+#define CC_GT  4
+#define CC_LE  3
+#define CC_LT  2
+#define CC_NE  1
+#define CC_EQ  0
+
+#define NB_MMU_MODES    3
+
+#define STREAM_EXCEPTION (1 << 0)
+#define STREAM_ATOMIC    (1 << 1)
+#define STREAM_TEST      (1 << 2)
+#define STREAM_CONTROL   (1 << 3)
+#define STREAM_NONBLOCK  (1 << 4)
+
+struct CPUMBState {
+    uint32_t debug;
+    uint32_t btaken;
+    uint32_t btarget;
+    uint32_t bimm;
+
+    uint32_t imm;
+    uint32_t regs[33];
+    uint32_t sregs[24];
+    float_status fp_status;
+    /* Stack protectors. Yes, it's a hw feature.  */
+    uint32_t slr, shr;
+
+    /* lwx/swx reserved address */
+#define RES_ADDR_NONE 0xffffffff /* Use 0xffffffff to indicate no reservation */
+    uint32_t res_addr;
+    uint32_t res_val;
+
+    /* Internal flags.  */
+#define IMM_FLAG	4
+#define MSR_EE_FLAG     (1 << 8)
+#define DRTI_FLAG	(1 << 16)
+#define DRTE_FLAG	(1 << 17)
+#define DRTB_FLAG	(1 << 18)
+#define D_FLAG		(1 << 19)  /* Bit in ESR.  */
+/* TB dependent CPUMBState.  */
+#define IFLAGS_TB_MASK  (D_FLAG | IMM_FLAG | DRTI_FLAG | DRTE_FLAG | DRTB_FLAG)
+    uint32_t iflags;
+
+#if !defined(CONFIG_USER_ONLY)
+    /* Unified MMU.  */
+    struct microblaze_mmu mmu;
+#endif
+
+    CPU_COMMON
+
+    /* These fields are preserved on reset.  */
+
+    struct {
+        uint32_t regs[16];
+    } pvr;
+};
+
+#include "cpu-qom.h"
+
+void mb_tcg_init(void);
+MicroBlazeCPU *cpu_mb_init(const char *cpu_model);
+int cpu_mb_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_mb_signal_handler(int host_signum, void *pinfo,
+                          void *puc);
+
+/* FIXME: MB uses variable pages down to 1K but linux only uses 4k.  */
+#define TARGET_PAGE_BITS 12
+
+#define TARGET_PHYS_ADDR_SPACE_BITS 32
+#define TARGET_VIRT_ADDR_SPACE_BITS 32
+
+#define cpu_init(cpu_model) CPU(cpu_mb_init(cpu_model))
+
+#define cpu_exec cpu_mb_exec
+#define cpu_gen_code cpu_mb_gen_code
+#define cpu_signal_handler cpu_mb_signal_handler
+
+/* MMU modes definitions */
+#define MMU_MODE0_SUFFIX _nommu
+#define MMU_MODE1_SUFFIX _kernel
+#define MMU_MODE2_SUFFIX _user
+#define MMU_NOMMU_IDX   0
+#define MMU_KERNEL_IDX  1
+#define MMU_USER_IDX    2
+/* See NB_MMU_MODES further up the file.  */
+
+static inline int cpu_mmu_index (CPUMBState *env)
+{
+        /* Are we in nommu mode?.  */
+        if (!(env->sregs[SR_MSR] & MSR_VM))
+            return MMU_NOMMU_IDX;
+
+	if (env->sregs[SR_MSR] & MSR_UM)
+            return MMU_USER_IDX;
+        return MMU_KERNEL_IDX;
+}
+
+int mb_cpu_handle_mmu_fault(CPUState *cpu, vaddr address, int rw,
+                            int mmu_idx);
+
+#include "exec/cpu-all.h"
+
+static inline void cpu_get_tb_cpu_state(CPUMBState *env, target_ulong *pc,
+                                        target_ulong *cs_base, int *flags)
+{
+    *pc = env->sregs[SR_PC];
+    *cs_base = 0;
+    *flags = (env->iflags & IFLAGS_TB_MASK) |
+                 (env->sregs[SR_MSR] & (MSR_UM | MSR_VM | MSR_EE));
+}
+
+#if !defined(CONFIG_USER_ONLY)
+void mb_cpu_unassigned_access(CPUState *cpu, hwaddr addr,
+                              bool is_write, bool is_exec, int is_asi,
+                              unsigned size);
+#endif
+
+#include "exec/exec-all.h"
+
+#endif