cpu: Introduce CPUClass::synchronize_from_tb() for cpu_pc_from_tb()

Where no extra implementation is needed, fall back to CPUClass::set_pc().

Acked-by: Michael Walle <michael@walle.cc> (for lm32)
Signed-off-by: Andreas Färber <afaerber@suse.de>

cpu-exec.c

@@ -59,8 +59,14 @@ static inline tcg_target_ulong cpu_tb_exec(CPUState *cpu, uint8_t *tb_ptr)
          * counter hit zero); we must restore the guest PC to the address
          * of the start of the TB.
          */
+        CPUClass *cc = CPU_GET_CLASS(cpu);
         TranslationBlock *tb = (TranslationBlock *)(next_tb & ~TB_EXIT_MASK);
-        cpu_pc_from_tb(env, tb);
+        if (cc->synchronize_from_tb) {
+            cc->synchronize_from_tb(cpu, tb);
+        } else {
+            assert(cc->set_pc);
+            cc->set_pc(cpu, tb->pc);
+        }
     }
     if ((next_tb & TB_EXIT_MASK) == TB_EXIT_REQUESTED) {
         /* We were asked to stop executing TBs (probably a pending

include/qom/cpu.h

@@ -60,6 +60,8 @@ typedef void (*CPUUnassignedAccess)(CPUState *cpu, hwaddr addr,
                                     bool is_write, bool is_exec, int opaque,
                                     unsigned size);
 
+struct TranslationBlock;
+
 /**
  * CPUClass:
  * @class_by_name: Callback to map -cpu command line model name to an
@@ -74,6 +76,8 @@ typedef void (*CPUUnassignedAccess)(CPUState *cpu, hwaddr addr,
  * @get_paging_enabled: Callback for inquiring whether paging is enabled.
  * @get_memory_mapping: Callback for obtaining the memory mappings.
  * @set_pc: Callback for setting the Program Counter register.
+ * @synchronize_from_tb: Callback for synchronizing state from a TCG
+ * #TranslationBlock.
  * @vmsd: State description for migration.
  *
  * Represents a CPU family or model.
@@ -98,6 +102,7 @@ typedef struct CPUClass {
     void (*get_memory_mapping)(CPUState *cpu, MemoryMappingList *list,
                                Error **errp);
     void (*set_pc)(CPUState *cpu, vaddr value);
+    void (*synchronize_from_tb)(CPUState *cpu, struct TranslationBlock *tb);
 
     const struct VMStateDescription *vmsd;
     int (*write_elf64_note)(WriteCoreDumpFunction f, CPUState *cpu,

target-alpha/cpu.h

@@ -515,9 +515,4 @@ static inline bool cpu_has_work(CPUState *cpu)
 
 #include "exec/exec-all.h"
 
-static inline void cpu_pc_from_tb(CPUAlphaState *env, TranslationBlock *tb)
-{
-    env->pc = tb->pc;
-}
-
 #endif /* !defined (__CPU_ALPHA_H__) */

target-arm/cpu.h

@@ -797,11 +797,6 @@ static inline bool cpu_has_work(CPUState *cpu)
 
 #include "exec/exec-all.h"
 
-static inline void cpu_pc_from_tb(CPUARMState *env, TranslationBlock *tb)
-{
-    env->regs[15] = tb->pc;
-}
-
 /* Load an instruction and return it in the standard little-endian order */
 static inline uint32_t arm_ldl_code(CPUARMState *env, uint32_t addr,
                                     bool do_swap)

target-cris/cpu.h

@@ -279,8 +279,4 @@ static inline bool cpu_has_work(CPUState *cpu)
 
 #include "exec/exec-all.h"
 
-static inline void cpu_pc_from_tb(CPUCRISState *env, TranslationBlock *tb)
-{
-    env->pc = tb->pc;
-}
 #endif

target-i386/cpu.c

@@ -2513,6 +2513,13 @@ static void x86_cpu_set_pc(CPUState *cs, vaddr value)
     cpu->env.eip = value;
 }
 
+static void x86_cpu_synchronize_from_tb(CPUState *cs, TranslationBlock *tb)
+{
+    X86CPU *cpu = X86_CPU(cs);
+
+    cpu->env.eip = tb->pc - tb->cs_base;
+}
+
 static void x86_cpu_common_class_init(ObjectClass *oc, void *data)
 {
     X86CPUClass *xcc = X86_CPU_CLASS(oc);
@@ -2530,6 +2537,7 @@ static void x86_cpu_common_class_init(ObjectClass *oc, void *data)
     cc->do_interrupt = x86_cpu_do_interrupt;
     cc->dump_state = x86_cpu_dump_state;
     cc->set_pc = x86_cpu_set_pc;
+    cc->synchronize_from_tb = x86_cpu_synchronize_from_tb;
     cc->get_arch_id = x86_cpu_get_arch_id;
     cc->get_paging_enabled = x86_cpu_get_paging_enabled;
 #ifndef CONFIG_USER_ONLY

target-i386/cpu.h

@@ -1148,11 +1148,6 @@ static inline bool cpu_has_work(CPUState *cs)
 
 #include "exec/exec-all.h"
 
-static inline void cpu_pc_from_tb(CPUX86State *env, TranslationBlock *tb)
-{
-    env->eip = tb->pc - tb->cs_base;
-}
-
 static inline void cpu_get_tb_cpu_state(CPUX86State *env, target_ulong *pc,
                                         target_ulong *cs_base, int *flags)
 {

target-lm32/cpu.h

@@ -232,9 +232,4 @@ static inline bool cpu_has_work(CPUState *cpu)
 
 #include "exec/exec-all.h"
 
-static inline void cpu_pc_from_tb(CPULM32State *env, TranslationBlock *tb)
-{
-    env->pc = tb->pc;
-}
-
 #endif

target-m68k/cpu.h

@@ -260,9 +260,4 @@ static inline bool cpu_has_work(CPUState *cpu)
 
 #include "exec/exec-all.h"
 
-static inline void cpu_pc_from_tb(CPUM68KState *env, TranslationBlock *tb)
-{
-    env->pc = tb->pc;
-}
-
 #endif

target-microblaze/cpu.h

@@ -365,9 +365,4 @@ static inline bool cpu_has_work(CPUState *cpu)
 
 #include "exec/exec-all.h"
 
-static inline void cpu_pc_from_tb(CPUMBState *env, TranslationBlock *tb)
-{
-    env->sregs[SR_PC] = tb->pc;
-}
-
 #endif

target-mips/cpu.c

@@ -35,6 +35,16 @@ static void mips_cpu_set_pc(CPUState *cs, vaddr value)
     }
 }
 
+static void mips_cpu_synchronize_from_tb(CPUState *cs, TranslationBlock *tb)
+{
+    MIPSCPU *cpu = MIPS_CPU(cs);
+    CPUMIPSState *env = &cpu->env;
+
+    env->active_tc.PC = tb->pc;
+    env->hflags &= ~MIPS_HFLAG_BMASK;
+    env->hflags |= tb->flags & MIPS_HFLAG_BMASK;
+}
+
 /* CPUClass::reset() */
 static void mips_cpu_reset(CPUState *s)
 {
@@ -90,6 +100,7 @@ static void mips_cpu_class_init(ObjectClass *c, void *data)
     cc->dump_state = mips_cpu_dump_state;
     cpu_class_set_do_unassigned_access(cc, mips_cpu_unassigned_access);
     cc->set_pc = mips_cpu_set_pc;
+    cc->synchronize_from_tb = mips_cpu_synchronize_from_tb;
 }
 
 static const TypeInfo mips_cpu_type_info = {

target-mips/cpu.h

@@ -732,13 +732,6 @@ static inline bool cpu_has_work(CPUState *cpu)
 
 #include "exec/exec-all.h"
 
-static inline void cpu_pc_from_tb(CPUMIPSState *env, TranslationBlock *tb)
-{
-    env->active_tc.PC = tb->pc;
-    env->hflags &= ~MIPS_HFLAG_BMASK;
-    env->hflags |= tb->flags & MIPS_HFLAG_BMASK;
-}
-
 static inline void compute_hflags(CPUMIPSState *env)
 {
     env->hflags &= ~(MIPS_HFLAG_COP1X | MIPS_HFLAG_64 | MIPS_HFLAG_CP0 |

target-moxie/cpu.h

@@ -143,11 +143,6 @@ static inline int cpu_mmu_index(CPUMoxieState *env)
 #include "exec/cpu-all.h"
 #include "exec/exec-all.h"
 
-static inline void cpu_pc_from_tb(CPUMoxieState *env, TranslationBlock *tb)
-{
-    env->pc = tb->pc;
-}
-
 static inline void cpu_get_tb_cpu_state(CPUMoxieState *env, target_ulong *pc,
                                         target_ulong *cs_base, int *flags)
 {

target-openrisc/cpu.h

@@ -428,9 +428,4 @@ static inline target_ulong cpu_get_pc(CPUOpenRISCState *env)
     return env->pc;
 }
 
-static inline void cpu_pc_from_tb(CPUOpenRISCState *env, TranslationBlock *tb)
-{
-    env->pc = tb->pc;
-}
-
 #endif /* CPU_OPENRISC_H */

target-ppc/cpu.h

@@ -2144,11 +2144,6 @@ static inline bool cpu_has_work(CPUState *cpu)
 
 #include "exec/exec-all.h"
 
-static inline void cpu_pc_from_tb(CPUPPCState *env, TranslationBlock *tb)
-{
-    env->nip = tb->pc;
-}
-
 void dump_mmu(FILE *f, fprintf_function cpu_fprintf, CPUPPCState *env);
 
 #endif /* !defined (__CPU_PPC_H__) */

target-s390x/cpu.h

@@ -1041,11 +1041,6 @@ static inline bool cpu_has_work(CPUState *cpu)
         (env->psw.mask & PSW_MASK_EXT);
 }
 
-static inline void cpu_pc_from_tb(CPUS390XState *env, TranslationBlock* tb)
-{
-    env->psw.addr = tb->pc;
-}
-
 /* fpu_helper.c */
 uint32_t set_cc_nz_f32(float32 v);
 uint32_t set_cc_nz_f64(float64 v);

target-sh4/cpu.c

@@ -31,6 +31,14 @@ static void superh_cpu_set_pc(CPUState *cs, vaddr value)
     cpu->env.pc = value;
 }
 
+static void superh_cpu_synchronize_from_tb(CPUState *cs, TranslationBlock *tb)
+{
+    SuperHCPU *cpu = SUPERH_CPU(cs);
+
+    cpu->env.pc = tb->pc;
+    cpu->env.flags = tb->flags;
+}
+
 /* CPUClass::reset() */
 static void superh_cpu_reset(CPUState *s)
 {
@@ -277,6 +285,7 @@ static void superh_cpu_class_init(ObjectClass *oc, void *data)
     cc->do_interrupt = superh_cpu_do_interrupt;
     cc->dump_state = superh_cpu_dump_state;
     cc->set_pc = superh_cpu_set_pc;
+    cc->synchronize_from_tb = superh_cpu_synchronize_from_tb;
     dc->vmsd = &vmstate_sh_cpu;
 }
 

target-sh4/cpu.h

@@ -359,10 +359,4 @@ static inline bool cpu_has_work(CPUState *cpu)
 
 #include "exec/exec-all.h"
 
-static inline void cpu_pc_from_tb(CPUSH4State *env, TranslationBlock *tb)
-{
-    env->pc = tb->pc;
-    env->flags = tb->flags;
-}
-
 #endif				/* _CPU_SH4_H */

target-sparc/cpu.c

@@ -731,6 +731,14 @@ static void sparc_cpu_set_pc(CPUState *cs, vaddr value)
     cpu->env.npc = value + 4;
 }
 
+static void sparc_cpu_synchronize_from_tb(CPUState *cs, TranslationBlock *tb)
+{
+    SPARCCPU *cpu = SPARC_CPU(cs);
+
+    cpu->env.pc = tb->pc;
+    cpu->env.npc = tb->cs_base;
+}
+
 static void sparc_cpu_realizefn(DeviceState *dev, Error **errp)
 {
     SPARCCPUClass *scc = SPARC_CPU_GET_CLASS(dev);
@@ -776,6 +784,7 @@ static void sparc_cpu_class_init(ObjectClass *oc, void *data)
     cc->dump_state = sparc_cpu_dump_state;
     cpu_class_set_do_unassigned_access(cc, sparc_cpu_unassigned_access);
     cc->set_pc = sparc_cpu_set_pc;
+    cc->synchronize_from_tb = sparc_cpu_synchronize_from_tb;
 }
 
 static const TypeInfo sparc_cpu_type_info = {

target-sparc/cpu.h

@@ -759,10 +759,4 @@ static inline bool cpu_has_work(CPUState *cpu)
 
 #include "exec/exec-all.h"
 
-static inline void cpu_pc_from_tb(CPUSPARCState *env, TranslationBlock *tb)
-{
-    env->pc = tb->pc;
-    env->npc = tb->cs_base;
-}
-
 #endif

target-unicore32/cpu.h

@@ -146,11 +146,6 @@ static inline int cpu_mmu_index(CPUUniCore32State *env)
 #include "cpu-qom.h"
 #include "exec/exec-all.h"
 
-static inline void cpu_pc_from_tb(CPUUniCore32State *env, TranslationBlock *tb)
-{
-    env->regs[31] = tb->pc;
-}
-
 static inline void cpu_get_tb_cpu_state(CPUUniCore32State *env, target_ulong *pc,
                                         target_ulong *cs_base, int *flags)
 {

target-xtensa/cpu.h

@@ -522,9 +522,4 @@ static inline int cpu_has_work(CPUState *cpu)
     return env->pending_irq_level;
 }
 
-static inline void cpu_pc_from_tb(CPUXtensaState *env, TranslationBlock *tb)
-{
-    env->pc = tb->pc;
-}
-
 #endif