tcg: Split out target/arch/cpu-param.h

For all targets, into this new file move TARGET_LONG_BITS,
TARGET_PAGE_BITS, TARGET_PHYS_ADDR_SPACE_BITS,
TARGET_VIRT_ADDR_SPACE_BITS, and NB_MMU_MODES.

Include this new file from exec/cpu-defs.h.

This now removes the somewhat odd requirement that target/arch/cpu.h
defines TARGET_LONG_BITS before including exec/cpu-defs.h, so push the
bulk of the includes within target/arch/cpu.h to the top.

Backports commit 74433bf083b0766aba81534f92de13194f23ff3e from qemu

qemu/include/exec/cpu-defs.h

@@ -35,8 +35,28 @@
 #endif
 #include "exec/memattrs.h"
 
+#include "cpu-param.h"
+
 #ifndef TARGET_LONG_BITS
-#error TARGET_LONG_BITS must be defined before including this header
+# error TARGET_LONG_BITS must be defined in cpu-param.h
+#endif
+#ifndef NB_MMU_MODES
+# error NB_MMU_MODES must be defined in cpu-param.h
+#endif
+#ifndef TARGET_PHYS_ADDR_SPACE_BITS
+# error TARGET_PHYS_ADDR_SPACE_BITS must be defined in cpu-param.h
+#endif
+#ifndef TARGET_VIRT_ADDR_SPACE_BITS
+# error TARGET_VIRT_ADDR_SPACE_BITS must be defined in cpu-param.h
+#endif
+#ifndef TARGET_PAGE_BITS
+# ifdef TARGET_PAGE_BITS_VARY
+#  ifndef TARGET_PAGE_BITS_MIN
+#   error TARGET_PAGE_BITS_MIN must be defined in cpu-param.h
+#  endif
+# else
+#  error TARGET_PAGE_BITS must be defined in cpu-param.h
+# endif
 #endif
 
 #define TARGET_LONG_SIZE (TARGET_LONG_BITS / 8)

qemu/target/arm/cpu-param.h

@@ -0,0 +1,36 @@
+/*
+ * ARM cpu parameters for qemu.
+ *
+ * Copyright (c) 2003 Fabrice Bellard
+ * SPDX-License-Identifier: LGPL-2.0+
+ */
+
+#ifndef ARM_CPU_PARAM_H
+#define ARM_CPU_PARAM_H 1
+
+#ifdef TARGET_AARCH64
+# define TARGET_LONG_BITS             64
+# define TARGET_PHYS_ADDR_SPACE_BITS  48
+# define TARGET_VIRT_ADDR_SPACE_BITS  48
+#else
+# define TARGET_LONG_BITS             32
+# define TARGET_PHYS_ADDR_SPACE_BITS  40
+# define TARGET_VIRT_ADDR_SPACE_BITS  32
+#endif
+
+#ifdef CONFIG_USER_ONLY
+#define TARGET_PAGE_BITS 12
+#else
+/*
+ * ARMv7 and later CPUs have 4K pages minimum, but ARMv5 and v6
+ * have to support 1K tiny pages.
+ */
+// Unicorn: Commented out until VTLB support is implemented.
+//# define TARGET_PAGE_BITS_VARY
+//# define TARGET_PAGE_BITS_MIN  10
+# define TARGET_PAGE_BITS 10
+#endif
+
+#define NB_MMU_MODES 8
+
+#endif

qemu/target/arm/cpu.h

@@ -24,23 +24,15 @@
 
 #include "kvm-consts.h"
 #include "hw/registerfields.h"
-
-#if defined(TARGET_AARCH64)
-  /* AArch64 definitions */
-#  define TARGET_LONG_BITS 64
-#else
-#  define TARGET_LONG_BITS 32
-#endif
+#include "qemu-common.h"
+#include "cpu-qom.h"
+#include "exec/cpu-defs.h"
 
 /* ARM processors have a weak memory model */
 #define TCG_GUEST_DEFAULT_MO      (0)
 
 #define CPUArchState struct CPUARMState
 
-#include "qemu-common.h"
-#include "cpu-qom.h"
-#include "exec/cpu-defs.h"
-
 #define EXCP_UDEF            1   /* undefined instruction */
 #define EXCP_SWI             2   /* software interrupt */
 #define EXCP_PREFETCH_ABORT  3
@@ -116,7 +108,6 @@ enum {
 #define ARM_CPU_VIRQ 2
 #define ARM_CPU_VFIQ 3
 
-#define NB_MMU_MODES 8
 /* ARM-specific extra insn start words:
  * 1: Conditional execution bits
  * 2: Partial exception syndrome for data aborts
@@ -2590,23 +2581,6 @@ bool write_cpustate_to_list(ARMCPU *cpu);
 #define ARM_CPUID_TI915T      0x54029152
 #define ARM_CPUID_TI925T      0x54029252
 
-#if defined(CONFIG_USER_ONLY)
-#define TARGET_PAGE_BITS 12
-#else
-/* The ARM MMU allows 1k pages.  */
-/* ??? Linux doesn't actually use these, and they're deprecated in recent
-   architecture revisions.  Maybe a configure option to disable them.  */
-#define TARGET_PAGE_BITS 10
-#endif
-
-#if defined(TARGET_AARCH64)
-#  define TARGET_PHYS_ADDR_SPACE_BITS 48
-#  define TARGET_VIRT_ADDR_SPACE_BITS 48
-#else
-#  define TARGET_PHYS_ADDR_SPACE_BITS 40
-#  define TARGET_VIRT_ADDR_SPACE_BITS 32
-#endif
-
 static inline bool arm_excp_unmasked(CPUState *cs, unsigned int excp_idx,
                                      unsigned int target_el)
 {

qemu/target/i386/cpu-param.h

@@ -0,0 +1,28 @@
+/*
+ * i386 cpu parameters for qemu.
+ *
+ * Copyright (c) 2003 Fabrice Bellard
+ * SPDX-License-Identifier: LGPL-2.0+
+ */
+
+#ifndef I386_CPU_PARAM_H
+#define I386_CPU_PARAM_H 1
+
+#ifdef TARGET_X86_64
+# define TARGET_LONG_BITS             64
+# define TARGET_PHYS_ADDR_SPACE_BITS  52
+/*
+ * ??? This is really 48 bits, sign-extended, but the only thing
+ * accessible to userland with bit 48 set is the VSYSCALL, and that
+ * is handled via other mechanisms.
+ */
+# define TARGET_VIRT_ADDR_SPACE_BITS  47
+#else
+# define TARGET_LONG_BITS             32
+# define TARGET_PHYS_ADDR_SPACE_BITS  36
+# define TARGET_VIRT_ADDR_SPACE_BITS  32
+#endif
+#define TARGET_PAGE_BITS 12
+#define NB_MMU_MODES 3
+
+#endif

qemu/target/i386/cpu.h

@@ -24,12 +24,6 @@
 #include "qemu-common.h"
 #include "cpu-qom.h"
 
-#ifdef TARGET_X86_64
-#define TARGET_LONG_BITS 64
-#else
-#define TARGET_LONG_BITS 32
-#endif
-
 /* The x86 has a strong memory model with some store-after-load re-ordering */
 #define TCG_GUEST_DEFAULT_MO      (TCG_MO_ALL & ~TCG_MO_ST_LD)
 
@@ -915,7 +909,6 @@ typedef struct {
 #define MAX_FIXED_COUNTERS 3
 #define MAX_GP_COUNTERS    (MSR_IA32_PERF_STATUS - MSR_P6_EVNTSEL0)
 
-#define NB_MMU_MODES 3
 #define TARGET_INSN_START_EXTRA_WORDS 1
 
 #define NB_OPMASK_REGS 8
@@ -1610,19 +1603,6 @@ void cpu_x86_update_dr7(CPUX86State *env, uint32_t new_dr7);
 void cpu_smm_update(CPUX86State *env);
 uint64_t cpu_get_tsc(CPUX86State *env);
 
-#define TARGET_PAGE_BITS 12
-
-#ifdef TARGET_X86_64
-#define TARGET_PHYS_ADDR_SPACE_BITS 52
-/* ??? This is really 48 bits, sign-extended, but the only thing
-   accessible to userland with bit 48 set is the VSYSCALL, and that
-   is handled via other mechanisms.  */
-#define TARGET_VIRT_ADDR_SPACE_BITS 47
-#else
-#define TARGET_PHYS_ADDR_SPACE_BITS 36
-#define TARGET_VIRT_ADDR_SPACE_BITS 32
-#endif
-
 /* XXX: This value should match the one returned by CPUID
  * and in exec.c */
 # if defined(TARGET_X86_64)

qemu/target/m68k/cpu-param.h

@@ -0,0 +1,22 @@
+/*
+ * m68k cpu parameters for qemu.
+ *
+ * Copyright (c) 2005-2007 CodeSourcery
+ * SPDX-License-Identifier: LGPL-2.0+
+ */
+
+#ifndef M68K_CPU_PARAM_H
+#define M68K_CPU_PARAM_H 1
+
+#define TARGET_LONG_BITS 32
+/*
+ * Coldfire Linux uses 8k pages
+ * and m68k linux uses 4k pages
+ * use the smallest one
+ */
+#define TARGET_PAGE_BITS 12
+#define TARGET_PHYS_ADDR_SPACE_BITS 32
+#define TARGET_VIRT_ADDR_SPACE_BITS 32
+#define NB_MMU_MODES 2
+
+#endif

qemu/target/m68k/cpu.h

@@ -21,15 +21,13 @@
 #ifndef M68K_CPU_H
 #define M68K_CPU_H
 
-#define TARGET_LONG_BITS 32
-
-#define CPUArchState struct CPUM68KState
-
 #include "config.h"
 #include "qemu-common.h"
 #include "cpu-qom.h"
 #include "exec/cpu-defs.h"
 
+#define CPUArchState struct CPUM68KState
+
 #define OS_BYTE     0
 #define OS_WORD     1
 #define OS_LONG     2
@@ -83,7 +81,6 @@
 #define M68K_MAX_TTR 2
 #define TTR(type, index) ttr[((type & ACCESS_CODE) == ACCESS_CODE) * 2 + index]
 
-#define NB_MMU_MODES 2
 #define TARGET_INSN_START_EXTRA_WORDS 1
 
 typedef CPU_LDoubleU FPReg;
@@ -497,12 +494,6 @@ void m68k_cpu_list(FILE *f, fprintf_function cpu_fprintf);
 
 void register_m68k_insns (CPUM68KState *env);
 
-/* Coldfire Linux uses 8k pages
- * and m68k linux uses 4k pages
- * use the smallest one
- */
-#define TARGET_PAGE_BITS 12
-
 enum {
     /* 1 bit to define user level / supervisor access */
     ACCESS_SUPER = 0x01,
@@ -517,9 +508,6 @@ enum {
     ACCESS_DATA  = 0x20, /* Data load/store access        */
 };
 
-#define TARGET_PHYS_ADDR_SPACE_BITS 32
-#define TARGET_VIRT_ADDR_SPACE_BITS 32
-
 #define M68K_CPU_TYPE_SUFFIX "-" TYPE_M68K_CPU
 #define M68K_CPU_TYPE_NAME(model) model M68K_CPU_TYPE_SUFFIX
 #define CPU_RESOLVING_TYPE TYPE_M68K_CPU

qemu/target/mips/cpu-param.h

@@ -0,0 +1,29 @@
+/*
+ * MIPS cpu parameters for qemu.
+ *
+ * SPDX-License-Identifier: LGPL-2.0+
+ */
+
+#ifndef MIPS_CPU_PARAM_H
+#define MIPS_CPU_PARAM_H 1
+
+#ifdef TARGET_MIPS64
+# define TARGET_LONG_BITS 64
+#else
+# define TARGET_LONG_BITS 32
+#endif
+#ifdef TARGET_MIPS64
+#define TARGET_PHYS_ADDR_SPACE_BITS 48
+#define TARGET_VIRT_ADDR_SPACE_BITS 48
+#else
+#define TARGET_PHYS_ADDR_SPACE_BITS 40
+# ifdef CONFIG_USER_ONLY
+#  define TARGET_VIRT_ADDR_SPACE_BITS 31
+# else
+#  define TARGET_VIRT_ADDR_SPACE_BITS 32
+#endif
+#endif
+#define TARGET_PAGE_BITS 12
+#define NB_MMU_MODES 4
+
+#endif

qemu/target/mips/cpu.h

@@ -8,9 +8,9 @@
 #include "config.h"
 #include "qemu-common.h"
 #include "cpu-qom.h"
-#include "mips-defs.h"
 #include "exec/cpu-defs.h"
 #include "fpu/softfloat.h"
+#include "mips-defs.h"
 
 struct CPUMIPSState;
 
@@ -102,7 +102,6 @@ struct CPUMIPSFPUContext {
 #define FP_UNIMPLEMENTED  32
 };
 
-#define NB_MMU_MODES 4
 #define TARGET_INSN_START_EXTRA_WORDS 2
 
 typedef struct CPUMIPSMVPContext CPUMIPSMVPContext;

qemu/target/mips/mips-defs.h

@@ -5,19 +5,8 @@
 //#define USE_HOST_FLOAT_REGS
 
 /* Real pages are variable size... */
-#define TARGET_PAGE_BITS 12
 #define MIPS_TLB_MAX 128
 
-#if defined(TARGET_MIPS64)
-#define TARGET_LONG_BITS 64
-#define TARGET_PHYS_ADDR_SPACE_BITS 48
-#define TARGET_VIRT_ADDR_SPACE_BITS 48
-#else
-#define TARGET_LONG_BITS 32
-#define TARGET_PHYS_ADDR_SPACE_BITS 40
-#define TARGET_VIRT_ADDR_SPACE_BITS 32
-#endif
-
 /*
  * bit definitions for insn_flags (ISAs/ASEs flags)
  * ------------------------------------------------

qemu/target/riscv/cpu-param.h

@@ -0,0 +1,23 @@
+/*
+ * RISC-V cpu parameters for qemu.
+ *
+ * Copyright (c) 2017-2018 SiFive, Inc.
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#ifndef RISCV_CPU_PARAM_H
+#define RISCV_CPU_PARAM_H 1
+
+#if defined(TARGET_RISCV64)
+# define TARGET_LONG_BITS 64
+# define TARGET_PHYS_ADDR_SPACE_BITS 56 /* 44-bit PPN */
+# define TARGET_VIRT_ADDR_SPACE_BITS 48 /* sv48 */
+#elif defined(TARGET_RISCV32)
+# define TARGET_LONG_BITS 32
+# define TARGET_PHYS_ADDR_SPACE_BITS 34 /* 22-bit PPN */
+# define TARGET_VIRT_ADDR_SPACE_BITS 32 /* sv32 */
+#endif
+#define TARGET_PAGE_BITS 12 /* 4 KiB Pages */
+#define NB_MMU_MODES 4
+
+#endif

qemu/target/riscv/cpu.h

@@ -20,22 +20,6 @@
 #ifndef RISCV_CPU_H
 #define RISCV_CPU_H
 
-/* QEMU addressing/paging config */
-#define TARGET_PAGE_BITS 12 /* 4 KiB Pages */
-#if defined(TARGET_RISCV64)
-#define TARGET_LONG_BITS 64
-#define TARGET_PHYS_ADDR_SPACE_BITS 56 /* 44-bit PPN */
-#define TARGET_VIRT_ADDR_SPACE_BITS 48 /* sv48 */
-#elif defined(TARGET_RISCV32)
-#define TARGET_LONG_BITS 32
-#define TARGET_PHYS_ADDR_SPACE_BITS 34 /* 22-bit PPN */
-#define TARGET_VIRT_ADDR_SPACE_BITS 32 /* sv32 */
-#endif
-
-#define TCG_GUEST_DEFAULT_MO 0
-
-#define CPUArchState struct CPURISCVState
-
 #include "config.h"
 
 #include "qemu-common.h"
@@ -43,6 +27,10 @@
 #include "exec/cpu-defs.h"
 #include "fpu/softfloat.h"
 
+#define TCG_GUEST_DEFAULT_MO 0
+
+#define CPUArchState struct CPURISCVState
+
 #define TYPE_RISCV_CPU "riscv-cpu"
 
 #define RISCV_CPU_TYPE_SUFFIX "-" TYPE_RISCV_CPU
@@ -100,7 +88,6 @@ enum {
 
 #define TRANSLATE_FAIL 1
 #define TRANSLATE_SUCCESS 0
-#define NB_MMU_MODES 4
 #define MMU_USER_IDX 3
 
 #define MAX_RISCV_PMPS (16)

qemu/target/sparc/cpu-param.h

@@ -0,0 +1,28 @@
+/*
+ * Sparc cpu parameters for qemu.
+ *
+ * SPDX-License-Identifier: LGPL-2.0+
+ */
+
+#ifndef SPARC_CPU_PARAM_H
+#define SPARC_CPU_PARAM_H 1
+
+#ifdef TARGET_SPARC64
+# define TARGET_LONG_BITS 64
+# define TARGET_PAGE_BITS 13 /* 8k */
+# define TARGET_PHYS_ADDR_SPACE_BITS  41
+# ifdef TARGET_ABI32
+#  define TARGET_VIRT_ADDR_SPACE_BITS 32
+# else
+#  define TARGET_VIRT_ADDR_SPACE_BITS 44
+# endif
+# define NB_MMU_MODES 6
+#else
+# define TARGET_LONG_BITS 32
+# define TARGET_PAGE_BITS 12 /* 4k */
+# define TARGET_PHYS_ADDR_SPACE_BITS 36
+# define TARGET_VIRT_ADDR_SPACE_BITS 32
+# define NB_MMU_MODES 3
+#endif
+
+#endif

qemu/target/sparc/cpu.h

@@ -4,32 +4,18 @@
 #include "config.h"
 #include "qemu-common.h"
 #include "cpu-qom.h"
-#include "qemu/bswap.h"
+#include "exec/cpu-defs.h"
 
 #define ALIGNED_ONLY
 
 #if !defined(TARGET_SPARC64)
-#define TARGET_LONG_BITS 32
 #define TARGET_DPREGS 16
-#define TARGET_PAGE_BITS 12 /* 4k */
-#define TARGET_PHYS_ADDR_SPACE_BITS 36
-#define TARGET_VIRT_ADDR_SPACE_BITS 32
 #else
-#define TARGET_LONG_BITS 64
 #define TARGET_DPREGS 32
-#define TARGET_PAGE_BITS 13 /* 8k */
-#define TARGET_PHYS_ADDR_SPACE_BITS 41
-# ifdef TARGET_ABI32
-#  define TARGET_VIRT_ADDR_SPACE_BITS 32
-# else
-#  define TARGET_VIRT_ADDR_SPACE_BITS 44
-# endif
 #endif
 
 #define CPUArchState struct CPUSPARCState
 
-#include "exec/cpu-defs.h"
-
 /*#define EXCP_INTERRUPT 0x100*/
 
 /* trap definitions */
@@ -221,10 +207,7 @@ enum {
 #define MIN_NWINDOWS 3
 #define MAX_NWINDOWS 32
 
-#if !defined(TARGET_SPARC64)
-#define NB_MMU_MODES 3
-#else
-#define NB_MMU_MODES 6
+#ifdef TARGET_SPARC64
 typedef struct trap_state {
     uint64_t tpc;
     uint64_t tnpc;