cpu: Remove CPU_COMMON

This macro is now always empty, so remove it.  This leaves the
entire contents of CPUArchState under the control of the guest
architecture.

Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

include/exec/cpu-defs.h

@@ -231,8 +231,6 @@ typedef struct CPUTLB { } CPUTLB;
 
 #endif  /* !CONFIG_USER_ONLY && CONFIG_TCG */
 
-#define CPU_COMMON  /* Nothing */
-
 /*
  * This structure must be placed in ArchCPU immedately
  * before CPUArchState, as a field named "neg".

target/alpha/cpu.h

@@ -251,9 +251,6 @@ struct CPUAlphaState {
     /* 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;

target/arm/cpu.h

@@ -645,9 +645,7 @@ typedef struct CPUARMState {
     /* Fields up to this point are cleared by a CPU reset */
     struct {} end_reset_fields;
 
-    CPU_COMMON
+    /* Fields after this point are preserved across CPU reset. */
-
-    /* Fields after CPU_COMMON are preserved across CPU reset. */
 
     /* Internal CPU feature flags.  */
     uint64_t features;

target/cris/cpu.h

@@ -163,8 +163,6 @@ typedef struct CPUCRISState {
         /* Fields up to this point are cleared by a CPU reset */
         struct {} end_reset_fields;
 
-        CPU_COMMON
-
         /* Members from load_info on are preserved across resets.  */
         void *load_info;
 } CPUCRISState;

target/hppa/cpu.h

@@ -197,9 +197,6 @@ struct CPUHPPAState {
     target_ureg cr_back[2];  /* back of cr17/cr18 */
     target_ureg shadow[7];   /* shadow registers */
 
-    /* Those resources are used only in QEMU core */
-    CPU_COMMON
-
     /* ??? The number of entries isn't specified by the architecture.  */
     /* ??? Implement a unified itlb/dtlb for the moment.  */
     /* ??? We should use a more intelligent data structure.  */

target/i386/cpu.h

@@ -1289,9 +1289,7 @@ typedef struct CPUX86State {
     /* Fields up to this point are cleared by a CPU reset */
     struct {} end_reset_fields;
 
-    CPU_COMMON
+    /* Fields after this point are preserved across CPU reset. */
-
-    /* Fields after CPU_COMMON are preserved across CPU reset. */
 
     /* processor features (e.g. for CPUID insn) */
     /* Minimum level/xlevel/xlevel2, based on CPU model + features */

target/lm32/cpu.h

@@ -159,8 +159,6 @@ struct CPULM32State {
     /* Fields up to this point are cleared by a CPU reset */
     struct {} end_reset_fields;
 
-    CPU_COMMON
-
     /* Fields from here on are preserved across CPU reset. */
     uint32_t eba;       /* exception base address */
     uint32_t deba;      /* debug exception base address */

target/m68k/cpu.h

@@ -143,8 +143,6 @@ typedef struct CPUM68KState {
     /* Fields up to this point are cleared by a CPU reset */
     struct {} end_reset_fields;
 
-    CPU_COMMON
-
     /* Fields from here on are preserved across CPU reset. */
     uint32_t features;
 } CPUM68KState;

target/microblaze/cpu.h

@@ -266,8 +266,6 @@ struct CPUMBState {
     /* Fields up to this point are cleared by a CPU reset */
     struct {} end_reset_fields;
 
-    CPU_COMMON
-
     /* These fields are preserved on reset.  */
 
     struct {

target/mips/cpu.h

@@ -1041,8 +1041,6 @@ struct CPUMIPSState {
     /* Fields up to this point are cleared by a CPU reset */
     struct {} end_reset_fields;
 
-    CPU_COMMON
-
     /* Fields from here on are preserved across CPU reset. */
     CPUMIPSMVPContext *mvp;
 #if !defined(CONFIG_USER_ONLY)

target/moxie/cpu.h

@@ -45,9 +45,6 @@ typedef struct CPUMoxieState {
 
     /* Fields up to this point are cleared by a CPU reset */
     struct {} end_reset_fields;
-
-    CPU_COMMON
-
 } CPUMoxieState;
 
 #include "qom/cpu.h"

target/nios2/cpu.h

@@ -167,8 +167,6 @@ struct CPUNios2State {
 
     uint32_t irq_pending;
 #endif
-
-    CPU_COMMON
 };
 
 /**

target/openrisc/cpu.h

@@ -286,8 +286,6 @@ typedef struct CPUOpenRISCState {
     /* Fields up to this point are cleared by a CPU reset */
     struct {} end_reset_fields;
 
-    CPU_COMMON
-
     /* Fields from here on are preserved across CPU reset. */
     uint32_t cpucfgr;         /* CPU configure register */
 

target/ppc/cpu.h

@@ -999,8 +999,6 @@ struct CPUPPCState {
     /* when a memory exception occurs, the access type is stored here */
     int access_type;
 
-    CPU_COMMON
-
     /* MMU context - only relevant for full system emulation */
 #if !defined(CONFIG_USER_ONLY)
 #if defined(TARGET_PPC64)

target/riscv/cpu.h

@@ -171,9 +171,6 @@ struct CPURISCVState {
 
     float_status fp_status;
 
-    /* QEMU */
-    CPU_COMMON
-
     /* Fields from here on are preserved across CPU reset. */
     QEMUTimer *timer; /* Internal timer */
 };

target/s390x/cpu.h

@@ -114,8 +114,6 @@ struct CPUS390XState {
     /* Fields up to this point are cleared by a CPU reset */
     struct {} end_reset_fields;
 
-    CPU_COMMON
-
 #if !defined(CONFIG_USER_ONLY)
     uint32_t core_id; /* PoP "CPU address", same as cpu_index */
     uint64_t cpuid;

target/sh4/cpu.h

@@ -179,8 +179,6 @@ typedef struct CPUSH4State {
     /* Fields up to this point are cleared by a CPU reset */
     struct {} end_reset_fields;
 
-    CPU_COMMON
-
     /* Fields from here on are preserved over CPU reset. */
     int id;			/* CPU model */
 

target/sparc/cpu.h

@@ -446,8 +446,6 @@ struct CPUSPARCState {
     /* Fields up to this point are cleared by a CPU reset */
     struct {} end_reset_fields;
 
-    CPU_COMMON
-
     /* Fields from here on are preserved across CPU reset. */
     target_ulong version;
     uint32_t nwindows;

target/tilegx/cpu.h

@@ -93,8 +93,6 @@ typedef struct CPUTLGState {
 
     /* Fields up to this point are cleared by a CPU reset */
     struct {} end_reset_fields;
-
-    CPU_COMMON
 } CPUTLGState;
 
 #include "qom/cpu.h"

target/tricore/cpu.h

@@ -184,8 +184,6 @@ struct CPUTriCoreState {
     int error_code;
     uint32_t hflags;    /* CPU State */
 
-    CPU_COMMON
-
     /* Internal CPU feature flags.  */
     uint64_t features;
 

target/unicore32/cpu.h

@@ -55,8 +55,6 @@ typedef struct CPUUniCore32State {
         float_status fp_status;
     } ucf64;
 
-    CPU_COMMON
-
     /* Internal CPU feature flags.  */
     uint32_t features;
 

target/xtensa/cpu.h

@@ -541,8 +541,6 @@ typedef struct CPUXtensaState {
 
     /* Watchpoints for DBREAK registers */
     struct CPUWatchpoint *cpu_watchpoint[MAX_NDBREAK];
-
-    CPU_COMMON
 } CPUXtensaState;
 
 /**