--- /dev/null
+/*
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA
+ */
+#ifndef CPU_MICROBLAZE_H
+#define CPU_MICROBLAZE_H
+
+#define TARGET_LONG_BITS 32
+
+#define CPUState struct CPUMBState
+
+#include "cpu-defs.h"
+struct CPUMBState;
+#if !defined(CONFIG_USER_ONLY)
+#include "mmu.h"
+#endif
+
+#define TARGET_HAS_ICE 1
+
+#define ELF_MACHINE EM_XILINX_MICROBLAZE
+
+#define EXCP_NMI 1
+#define EXCP_MMU 2
+#define EXCP_IRQ 3
+#define EXCP_BREAK 4
+#define EXCP_HW_BREAK 5
+
+/* 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_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 */
+
+
+
+/* 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 0x00800000 /* new */
+#define PVR0_VERSION_MASK 0x0000FF00
+#define PVR0_USER1_MASK 0x000000FF
+
+/* 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
+
+/* 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 0x003C0000
+/* MSR Reset value PVR mask */
+#define PVR11_MSR_RESET_VALUE_MASK 0x000007FF
+
+
+
+/* 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
+typedef 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];
+
+ /* Internal flags. */
+#define IMM_FLAG 4
+#define DRTI_FLAG (1 << 16)
+#define DRTE_FLAG (1 << 17)
+#define DRTB_FLAG (1 << 18)
+#define D_FLAG (1 << 19) /* Bit in ESR. */
+/* TB dependant CPUState. */
+#define IFLAGS_TB_MASK (D_FLAG | IMM_FLAG | DRTI_FLAG | DRTE_FLAG | DRTB_FLAG)
+ uint32_t iflags;
+
+ struct {
+ uint32_t regs[16];
+ } pvr;
+
+#if !defined(CONFIG_USER_ONLY)
+ /* Unified MMU. */
+ struct microblaze_mmu mmu;
+#endif
+
+ CPU_COMMON
+} CPUMBState;
+
+CPUState *cpu_mb_init(const char *cpu_model);
+int cpu_mb_exec(CPUState *s);
+void cpu_mb_close(CPUState *s);
+void do_interrupt(CPUState *env);
+/* 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);
+
+enum {
+ CC_OP_DYNAMIC, /* Use env->cc_op */
+ CC_OP_FLAGS,
+ CC_OP_CMP,
+};
+
+/* FIXME: MB uses variable pages down to 1K but linux only uses 4k. */
+#define TARGET_PAGE_BITS 12
+#define MMAP_SHIFT TARGET_PAGE_BITS
+
+#define cpu_init cpu_mb_init
+#define cpu_exec cpu_mb_exec
+#define cpu_gen_code cpu_mb_gen_code
+#define cpu_signal_handler cpu_mb_signal_handler
+
+#define CPU_SAVE_VERSION 1
+
+/* 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 (CPUState *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 cpu_mb_handle_mmu_fault(CPUState *env, target_ulong address, int rw,
+ int mmu_idx, int is_softmmu);
+
+#if defined(CONFIG_USER_ONLY)
+static inline void cpu_clone_regs(CPUState *env, target_ulong newsp)
+{
+ if (newsp)
+ env->regs[R_SP] = newsp;
+ env->regs[3] = 0;
+}
+#endif
+
+static inline void cpu_set_tls(CPUState *env, target_ulong newtls)
+{
+}
+
+static inline int cpu_interrupts_enabled(CPUState *env)
+{
+ return env->sregs[SR_MSR] & MSR_IE;
+}
+
+#include "cpu-all.h"
+#include "exec-all.h"
+
+static inline void cpu_pc_from_tb(CPUState *env, TranslationBlock *tb)
+{
+ env->sregs[SR_PC] = tb->pc;
+}
+
+static inline target_ulong cpu_get_pc(CPUState *env)
+{
+ return env->sregs[SR_PC];
+}
+
+static inline void cpu_get_tb_cpu_state(CPUState *env, target_ulong *pc,
+ target_ulong *cs_base, int *flags)
+{
+ *pc = env->sregs[SR_PC];
+ *cs_base = 0;
+ *flags = env->iflags & IFLAGS_TB_MASK;
+}
+#endif
projects / qemu / blobdiff