Move target-* CPU file into a target/ folder

We've currently got 18 architectures in QEMU, and thus 18 target-xxx
folders in the root folder of the QEMU source tree. More architectures
(e.g. RISC-V, AVR) are likely to be included soon, too, so the main
folder of the QEMU sources slowly gets quite overcrowded with the
target-xxx folders.
To disburden the main folder a little bit, let's move the target-xxx
folders into a dedicated target/ folder, so that target-xxx/ simply
becomes target/xxx/ instead.

Acked-by: Laurent Vivier <laurent@vivier.eu> [m68k part]
Acked-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de> [tricore part]
Acked-by: Michael Walle <michael@walle.cc> [lm32 part]
Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> [s390x part]
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com> [s390x part]
Acked-by: Eduardo Habkost <ehabkost@redhat.com> [i386 part]
Acked-by: Artyom Tarasenko <atar4qemu@gmail.com> [sparc part]
Acked-by: Richard Henderson <rth@twiddle.net> [alpha part]
Acked-by: Max Filippov <jcmvbkbc@gmail.com> [xtensa part]
Reviewed-by: David Gibson <david@gibson.dropbear.id.au> [ppc part]
Acked-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com> [cris&microblaze part]
Acked-by: Guan Xuetao <gxt@mprc.pku.edu.cn> [unicore32 part]
Signed-off-by: Thomas Huth <thuth@redhat.com>

1 files changed, 308 insertions, 0 deletions

diff --git a/target/m68k/cpu.h b/target/m68k/cpu.h
new file mode 100644
index 0000000..6dfb54e
--- /dev/null
+++ b/target/m68k/cpu.h
@@ -0,0 +1,308 @@
+/*
+ * m68k virtual CPU header
+ *
+ *  Copyright (c) 2005-2007 CodeSourcery
+ *  Written by Paul Brook
+ *
+ * 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 M68K_CPU_H
+#define M68K_CPU_H
+
+#define TARGET_LONG_BITS 32
+
+#define CPUArchState struct CPUM68KState
+
+#include "qemu-common.h"
+#include "exec/cpu-defs.h"
+#include "cpu-qom.h"
+#include "fpu/softfloat.h"
+
+#define OS_BYTE     0
+#define OS_WORD     1
+#define OS_LONG     2
+#define OS_SINGLE   3
+#define OS_DOUBLE   4
+#define OS_EXTENDED 5
+#define OS_PACKED   6
+
+#define MAX_QREGS 32
+
+#define EXCP_ACCESS         2   /* Access (MMU) error.  */
+#define EXCP_ADDRESS        3   /* Address error.  */
+#define EXCP_ILLEGAL        4   /* Illegal instruction.  */
+#define EXCP_DIV0           5   /* Divide by zero */
+#define EXCP_PRIVILEGE      8   /* Privilege violation.  */
+#define EXCP_TRACE          9
+#define EXCP_LINEA          10  /* Unimplemented line-A (MAC) opcode.  */
+#define EXCP_LINEF          11  /* Unimplemented line-F (FPU) opcode.  */
+#define EXCP_DEBUGNBP       12  /* Non-breakpoint debug interrupt.  */
+#define EXCP_DEBEGBP        13  /* Breakpoint debug interrupt.  */
+#define EXCP_FORMAT         14  /* RTE format error.  */
+#define EXCP_UNINITIALIZED  15
+#define EXCP_TRAP0          32   /* User trap #0.  */
+#define EXCP_TRAP15         47   /* User trap #15.  */
+#define EXCP_UNSUPPORTED    61
+#define EXCP_ICE            13
+
+#define EXCP_RTE            0x100
+#define EXCP_HALT_INSN      0x101
+
+#define NB_MMU_MODES 2
+#define TARGET_INSN_START_EXTRA_WORDS 1
+
+typedef struct CPUM68KState {
+    uint32_t dregs[8];
+    uint32_t aregs[8];
+    uint32_t pc;
+    uint32_t sr;
+
+    /* SSP and USP.  The current_sp is stored in aregs[7], the other here.  */
+    int current_sp;
+    uint32_t sp[2];
+
+    /* Condition flags.  */
+    uint32_t cc_op;
+    uint32_t cc_x; /* always 0/1 */
+    uint32_t cc_n; /* in bit 31 (i.e. negative) */
+    uint32_t cc_v; /* in bit 31, unused, or computed from cc_n and cc_v */
+    uint32_t cc_c; /* either 0/1, unused, or computed from cc_n and cc_v */
+    uint32_t cc_z; /* == 0 or unused */
+
+    float64 fregs[8];
+    float64 fp_result;
+    uint32_t fpcr;
+    uint32_t fpsr;
+    float_status fp_status;
+
+    uint64_t mactmp;
+    /* EMAC Hardware deals with 48-bit values composed of one 32-bit and
+       two 8-bit parts.  We store a single 64-bit value and
+       rearrange/extend this when changing modes.  */
+    uint64_t macc[4];
+    uint32_t macsr;
+    uint32_t mac_mask;
+
+    /* Temporary storage for DIV helpers.  */
+    uint32_t div1;
+    uint32_t div2;
+
+    /* MMU status.  */
+    struct {
+        uint32_t ar;
+    } mmu;
+
+    /* Control registers.  */
+    uint32_t vbr;
+    uint32_t mbar;
+    uint32_t rambar0;
+    uint32_t cacr;
+
+    int pending_vector;
+    int pending_level;
+
+    uint32_t qregs[MAX_QREGS];
+
+    CPU_COMMON
+
+    /* Fields from here on are preserved across CPU reset. */
+    uint32_t features;
+} CPUM68KState;
+
+/**
+ * M68kCPU:
+ * @env: #CPUM68KState
+ *
+ * A Motorola 68k CPU.
+ */
+struct M68kCPU {
+    /*< private >*/
+    CPUState parent_obj;
+    /*< public >*/
+
+    CPUM68KState env;
+};
+
+static inline M68kCPU *m68k_env_get_cpu(CPUM68KState *env)
+{
+    return container_of(env, M68kCPU, env);
+}
+
+#define ENV_GET_CPU(e) CPU(m68k_env_get_cpu(e))
+
+#define ENV_OFFSET offsetof(M68kCPU, env)
+
+void m68k_cpu_do_interrupt(CPUState *cpu);
+bool m68k_cpu_exec_interrupt(CPUState *cpu, int int_req);
+void m68k_cpu_dump_state(CPUState *cpu, FILE *f, fprintf_function cpu_fprintf,
+                         int flags);
+hwaddr m68k_cpu_get_phys_page_debug(CPUState *cpu, vaddr addr);
+int m68k_cpu_gdb_read_register(CPUState *cpu, uint8_t *buf, int reg);
+int m68k_cpu_gdb_write_register(CPUState *cpu, uint8_t *buf, int reg);
+
+void m68k_tcg_init(void);
+void m68k_cpu_init_gdb(M68kCPU *cpu);
+M68kCPU *cpu_m68k_init(const char *cpu_model);
+/* 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_m68k_signal_handler(int host_signum, void *pinfo,
+                           void *puc);
+uint32_t cpu_m68k_get_ccr(CPUM68KState *env);
+void cpu_m68k_set_ccr(CPUM68KState *env, uint32_t);
+
+
+/* Instead of computing the condition codes after each m68k instruction,
+ * QEMU just stores one operand (called CC_SRC), the result
+ * (called CC_DEST) and the type of operation (called CC_OP). When the
+ * condition codes are needed, the condition codes can be calculated
+ * using this information. Condition codes are not generated if they
+ * are only needed for conditional branches.
+ */
+typedef enum {
+    /* Translator only -- use env->cc_op.  */
+    CC_OP_DYNAMIC = -1,
+
+    /* Each flag bit computed into cc_[xcnvz].  */
+    CC_OP_FLAGS,
+
+    /* X in cc_x, C = X, N in cc_n, Z in cc_n, V via cc_n/cc_v.  */
+    CC_OP_ADDB, CC_OP_ADDW, CC_OP_ADDL,
+    CC_OP_SUBB, CC_OP_SUBW, CC_OP_SUBL,
+
+    /* X in cc_x, {N,Z,C,V} via cc_n/cc_v.  */
+    CC_OP_CMPB, CC_OP_CMPW, CC_OP_CMPL,
+
+    /* X in cc_x, C = 0, V = 0, N in cc_n, Z in cc_n.  */
+    CC_OP_LOGIC,
+
+    CC_OP_NB
+} CCOp;
+
+#define CCF_C 0x01
+#define CCF_V 0x02
+#define CCF_Z 0x04
+#define CCF_N 0x08
+#define CCF_X 0x10
+
+#define SR_I_SHIFT 8
+#define SR_I  0x0700
+#define SR_M  0x1000
+#define SR_S  0x2000
+#define SR_T  0x8000
+
+#define M68K_SSP    0
+#define M68K_USP    1
+
+/* CACR fields are implementation defined, but some bits are common.  */
+#define M68K_CACR_EUSP  0x10
+
+#define MACSR_PAV0  0x100
+#define MACSR_OMC   0x080
+#define MACSR_SU    0x040
+#define MACSR_FI    0x020
+#define MACSR_RT    0x010
+#define MACSR_N     0x008
+#define MACSR_Z     0x004
+#define MACSR_V     0x002
+#define MACSR_EV    0x001
+
+void m68k_set_irq_level(M68kCPU *cpu, int level, uint8_t vector);
+void m68k_switch_sp(CPUM68KState *env);
+
+#define M68K_FPCR_PREC (1 << 6)
+
+void do_m68k_semihosting(CPUM68KState *env, int nr);
+
+/* There are 4 ColdFire core ISA revisions: A, A+, B and C.
+   Each feature covers the subset of instructions common to the
+   ISA revisions mentioned.  */
+
+enum m68k_features {
+    M68K_FEATURE_M68000,
+    M68K_FEATURE_CF_ISA_A,
+    M68K_FEATURE_CF_ISA_B, /* (ISA B or C).  */
+    M68K_FEATURE_CF_ISA_APLUSC, /* BIT/BITREV, FF1, STRLDSR (ISA A+ or C).  */
+    M68K_FEATURE_BRAL, /* Long unconditional branch.  (ISA A+ or B).  */
+    M68K_FEATURE_CF_FPU,
+    M68K_FEATURE_CF_MAC,
+    M68K_FEATURE_CF_EMAC,
+    M68K_FEATURE_CF_EMAC_B, /* Revision B EMAC (dual accumulate).  */
+    M68K_FEATURE_USP, /* User Stack Pointer.  (ISA A+, B or C).  */
+    M68K_FEATURE_EXT_FULL, /* 68020+ full extension word.  */
+    M68K_FEATURE_WORD_INDEX, /* word sized address index registers.  */
+    M68K_FEATURE_SCALED_INDEX, /* scaled address index registers.  */
+    M68K_FEATURE_LONG_MULDIV, /* 32 bit multiply/divide. */
+    M68K_FEATURE_QUAD_MULDIV, /* 64 bit multiply/divide. */
+    M68K_FEATURE_BCCL, /* Long conditional branches.  */
+    M68K_FEATURE_BITFIELD, /* Bit field insns.  */
+    M68K_FEATURE_FPU,
+    M68K_FEATURE_CAS,
+    M68K_FEATURE_BKPT,
+};
+
+static inline int m68k_feature(CPUM68KState *env, int feature)
+{
+    return (env->features & (1u << feature)) != 0;
+}
+
+void m68k_cpu_list(FILE *f, fprintf_function cpu_fprintf);
+
+void register_m68k_insns (CPUM68KState *env);
+
+#ifdef CONFIG_USER_ONLY
+/* Coldfire Linux uses 8k pages
+ * and m68k linux uses 4k pages
+ * use the smaller one
+ */
+#define TARGET_PAGE_BITS 12
+#else
+/* Smallest TLB entry size is 1k.  */
+#define TARGET_PAGE_BITS 10
+#endif
+
+#define TARGET_PHYS_ADDR_SPACE_BITS 32
+#define TARGET_VIRT_ADDR_SPACE_BITS 32
+
+#define cpu_init(cpu_model) CPU(cpu_m68k_init(cpu_model))
+
+#define cpu_signal_handler cpu_m68k_signal_handler
+#define cpu_list m68k_cpu_list
+
+/* MMU modes definitions */
+#define MMU_MODE0_SUFFIX _kernel
+#define MMU_MODE1_SUFFIX _user
+#define MMU_USER_IDX 1
+static inline int cpu_mmu_index (CPUM68KState *env, bool ifetch)
+{
+    return (env->sr & SR_S) == 0 ? 1 : 0;
+}
+
+int m68k_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(CPUM68KState *env, target_ulong *pc,
+                                        target_ulong *cs_base, uint32_t *flags)
+{
+    *pc = env->pc;
+    *cs_base = 0;
+    *flags = (env->fpcr & M68K_FPCR_PREC)       /* Bit  6 */
+            | (env->sr & SR_S)                  /* Bit  13 */
+            | ((env->macsr >> 4) & 0xf);        /* Bits 0-3 */
+}
+
+#endif