[Qemu-devel] [PATCH for 2.13 06/19] linux-user: move ppc/ppc64 cpu loop to ppc directory

[Laurent Vivier]

No code change, only move code from main.c to
ppc/cpu_loop.c.

Signed-off-by: Laurent Vivier <address@hidden>
---
 linux-user/main.c         | 560 +---------------------------------------------
 linux-user/ppc/cpu_loop.c | 553 +++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 554 insertions(+), 559 deletions(-)

diff --git a/linux-user/main.c b/linux-user/main.c
index 349dcd6a20..b5d0513b44 100644
--- a/linux-user/main.c
+++ b/linux-user/main.c
@@ -149,547 +149,6 @@ void fork_end(int child)
     }
 }
 
-#ifdef TARGET_PPC
-static inline uint64_t cpu_ppc_get_tb(CPUPPCState *env)
-{
-    return cpu_get_host_ticks();
-}
-
-uint64_t cpu_ppc_load_tbl(CPUPPCState *env)
-{
-    return cpu_ppc_get_tb(env);
-}
-
-uint32_t cpu_ppc_load_tbu(CPUPPCState *env)
-{
-    return cpu_ppc_get_tb(env) >> 32;
-}
-
-uint64_t cpu_ppc_load_atbl(CPUPPCState *env)
-{
-    return cpu_ppc_get_tb(env);
-}
-
-uint32_t cpu_ppc_load_atbu(CPUPPCState *env)
-{
-    return cpu_ppc_get_tb(env) >> 32;
-}
-
-uint32_t cpu_ppc601_load_rtcu(CPUPPCState *env)
-__attribute__ (( alias ("cpu_ppc_load_tbu") ));
-
-uint32_t cpu_ppc601_load_rtcl(CPUPPCState *env)
-{
-    return cpu_ppc_load_tbl(env) & 0x3FFFFF80;
-}
-
-/* XXX: to be fixed */
-int ppc_dcr_read (ppc_dcr_t *dcr_env, int dcrn, uint32_t *valp)
-{
-    return -1;
-}
-
-int ppc_dcr_write (ppc_dcr_t *dcr_env, int dcrn, uint32_t val)
-{
-    return -1;
-}
-
-static int do_store_exclusive(CPUPPCState *env)
-{
-    target_ulong addr;
-    target_ulong page_addr;
-    target_ulong val, val2 __attribute__((unused)) = 0;
-    int flags;
-    int segv = 0;
-
-    addr = env->reserve_ea;
-    page_addr = addr & TARGET_PAGE_MASK;
-    start_exclusive();
-    mmap_lock();
-    flags = page_get_flags(page_addr);
-    if ((flags & PAGE_READ) == 0) {
-        segv = 1;
-    } else {
-        int reg = env->reserve_info & 0x1f;
-        int size = env->reserve_info >> 5;
-        int stored = 0;
-
-        if (addr == env->reserve_addr) {
-            switch (size) {
-            case 1: segv = get_user_u8(val, addr); break;
-            case 2: segv = get_user_u16(val, addr); break;
-            case 4: segv = get_user_u32(val, addr); break;
-#if defined(TARGET_PPC64)
-            case 8: segv = get_user_u64(val, addr); break;
-            case 16: {
-                segv = get_user_u64(val, addr);
-                if (!segv) {
-                    segv = get_user_u64(val2, addr + 8);
-                }
-                break;
-            }
-#endif
-            default: abort();
-            }
-            if (!segv && val == env->reserve_val) {
-                val = env->gpr[reg];
-                switch (size) {
-                case 1: segv = put_user_u8(val, addr); break;
-                case 2: segv = put_user_u16(val, addr); break;
-                case 4: segv = put_user_u32(val, addr); break;
-#if defined(TARGET_PPC64)
-                case 8: segv = put_user_u64(val, addr); break;
-                case 16: {
-                    if (val2 == env->reserve_val2) {
-                        if (msr_le) {
-                            val2 = val;
-                            val = env->gpr[reg+1];
-                        } else {
-                            val2 = env->gpr[reg+1];
-                        }
-                        segv = put_user_u64(val, addr);
-                        if (!segv) {
-                            segv = put_user_u64(val2, addr + 8);
-                        }
-                    }
-                    break;
-                }
-#endif
-                default: abort();
-                }
-                if (!segv) {
-                    stored = 1;
-                }
-            }
-        }
-        env->crf[0] = (stored << 1) | xer_so;
-        env->reserve_addr = (target_ulong)-1;
-    }
-    if (!segv) {
-        env->nip += 4;
-    }
-    mmap_unlock();
-    end_exclusive();
-    return segv;
-}
-
-void cpu_loop(CPUPPCState *env)
-{
-    CPUState *cs = CPU(ppc_env_get_cpu(env));
-    target_siginfo_t info;
-    int trapnr;
-    target_ulong ret;
-
-    for(;;) {
-        cpu_exec_start(cs);
-        trapnr = cpu_exec(cs);
-        cpu_exec_end(cs);
-        process_queued_cpu_work(cs);
-
-        switch(trapnr) {
-        case POWERPC_EXCP_NONE:
-            /* Just go on */
-            break;
-        case POWERPC_EXCP_CRITICAL: /* Critical input                        */
-            cpu_abort(cs, "Critical interrupt while in user mode. "
-                      "Aborting\n");
-            break;
-        case POWERPC_EXCP_MCHECK:   /* Machine check exception               */
-            cpu_abort(cs, "Machine check exception while in user mode. "
-                      "Aborting\n");
-            break;
-        case POWERPC_EXCP_DSI:      /* Data storage exception                */
-            /* XXX: check this. Seems bugged */
-            switch (env->error_code & 0xFF000000) {
-            case 0x40000000:
-            case 0x42000000:
-                info.si_signo = TARGET_SIGSEGV;
-                info.si_errno = 0;
-                info.si_code = TARGET_SEGV_MAPERR;
-                break;
-            case 0x04000000:
-                info.si_signo = TARGET_SIGILL;
-                info.si_errno = 0;
-                info.si_code = TARGET_ILL_ILLADR;
-                break;
-            case 0x08000000:
-                info.si_signo = TARGET_SIGSEGV;
-                info.si_errno = 0;
-                info.si_code = TARGET_SEGV_ACCERR;
-                break;
-            default:
-                /* Let's send a regular segfault... */
-                EXCP_DUMP(env, "Invalid segfault errno (%02x)\n",
-                          env->error_code);
-                info.si_signo = TARGET_SIGSEGV;
-                info.si_errno = 0;
-                info.si_code = TARGET_SEGV_MAPERR;
-                break;
-            }
-            info._sifields._sigfault._addr = env->spr[SPR_DAR];
-            queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
-            break;
-        case POWERPC_EXCP_ISI:      /* Instruction storage exception         */
-            /* XXX: check this */
-            switch (env->error_code & 0xFF000000) {
-            case 0x40000000:
-                info.si_signo = TARGET_SIGSEGV;
-            info.si_errno = 0;
-                info.si_code = TARGET_SEGV_MAPERR;
-                break;
-            case 0x10000000:
-            case 0x08000000:
-                info.si_signo = TARGET_SIGSEGV;
-                info.si_errno = 0;
-                info.si_code = TARGET_SEGV_ACCERR;
-                break;
-            default:
-                /* Let's send a regular segfault... */
-                EXCP_DUMP(env, "Invalid segfault errno (%02x)\n",
-                          env->error_code);
-                info.si_signo = TARGET_SIGSEGV;
-                info.si_errno = 0;
-                info.si_code = TARGET_SEGV_MAPERR;
-                break;
-            }
-            info._sifields._sigfault._addr = env->nip - 4;
-            queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
-            break;
-        case POWERPC_EXCP_EXTERNAL: /* External input                        */
-            cpu_abort(cs, "External interrupt while in user mode. "
-                      "Aborting\n");
-            break;
-        case POWERPC_EXCP_ALIGN:    /* Alignment exception                   */
-            /* XXX: check this */
-            info.si_signo = TARGET_SIGBUS;
-            info.si_errno = 0;
-            info.si_code = TARGET_BUS_ADRALN;
-            info._sifields._sigfault._addr = env->nip;
-            queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
-            break;
-        case POWERPC_EXCP_PROGRAM:  /* Program exception                     */
-        case POWERPC_EXCP_HV_EMU:   /* HV emulation                          */
-            /* XXX: check this */
-            switch (env->error_code & ~0xF) {
-            case POWERPC_EXCP_FP:
-                info.si_signo = TARGET_SIGFPE;
-                info.si_errno = 0;
-                switch (env->error_code & 0xF) {
-                case POWERPC_EXCP_FP_OX:
-                    info.si_code = TARGET_FPE_FLTOVF;
-                    break;
-                case POWERPC_EXCP_FP_UX:
-                    info.si_code = TARGET_FPE_FLTUND;
-                    break;
-                case POWERPC_EXCP_FP_ZX:
-                case POWERPC_EXCP_FP_VXZDZ:
-                    info.si_code = TARGET_FPE_FLTDIV;
-                    break;
-                case POWERPC_EXCP_FP_XX:
-                    info.si_code = TARGET_FPE_FLTRES;
-                    break;
-                case POWERPC_EXCP_FP_VXSOFT:
-                    info.si_code = TARGET_FPE_FLTINV;
-                    break;
-                case POWERPC_EXCP_FP_VXSNAN:
-                case POWERPC_EXCP_FP_VXISI:
-                case POWERPC_EXCP_FP_VXIDI:
-                case POWERPC_EXCP_FP_VXIMZ:
-                case POWERPC_EXCP_FP_VXVC:
-                case POWERPC_EXCP_FP_VXSQRT:
-                case POWERPC_EXCP_FP_VXCVI:
-                    info.si_code = TARGET_FPE_FLTSUB;
-                    break;
-                default:
-                    EXCP_DUMP(env, "Unknown floating point exception (%02x)\n",
-                              env->error_code);
-                    break;
-                }
-                break;
-            case POWERPC_EXCP_INVAL:
-                info.si_signo = TARGET_SIGILL;
-                info.si_errno = 0;
-                switch (env->error_code & 0xF) {
-                case POWERPC_EXCP_INVAL_INVAL:
-                    info.si_code = TARGET_ILL_ILLOPC;
-                    break;
-                case POWERPC_EXCP_INVAL_LSWX:
-                    info.si_code = TARGET_ILL_ILLOPN;
-                    break;
-                case POWERPC_EXCP_INVAL_SPR:
-                    info.si_code = TARGET_ILL_PRVREG;
-                    break;
-                case POWERPC_EXCP_INVAL_FP:
-                    info.si_code = TARGET_ILL_COPROC;
-                    break;
-                default:
-                    EXCP_DUMP(env, "Unknown invalid operation (%02x)\n",
-                              env->error_code & 0xF);
-                    info.si_code = TARGET_ILL_ILLADR;
-                    break;
-                }
-                break;
-            case POWERPC_EXCP_PRIV:
-                info.si_signo = TARGET_SIGILL;
-                info.si_errno = 0;
-                switch (env->error_code & 0xF) {
-                case POWERPC_EXCP_PRIV_OPC:
-                    info.si_code = TARGET_ILL_PRVOPC;
-                    break;
-                case POWERPC_EXCP_PRIV_REG:
-                    info.si_code = TARGET_ILL_PRVREG;
-                    break;
-                default:
-                    EXCP_DUMP(env, "Unknown privilege violation (%02x)\n",
-                              env->error_code & 0xF);
-                    info.si_code = TARGET_ILL_PRVOPC;
-                    break;
-                }
-                break;
-            case POWERPC_EXCP_TRAP:
-                cpu_abort(cs, "Tried to call a TRAP\n");
-                break;
-            default:
-                /* Should not happen ! */
-                cpu_abort(cs, "Unknown program exception (%02x)\n",
-                          env->error_code);
-                break;
-            }
-            info._sifields._sigfault._addr = env->nip;
-            queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
-            break;
-        case POWERPC_EXCP_FPU:      /* Floating-point unavailable exception  */
-            info.si_signo = TARGET_SIGILL;
-            info.si_errno = 0;
-            info.si_code = TARGET_ILL_COPROC;
-            info._sifields._sigfault._addr = env->nip;
-            queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
-            break;
-        case POWERPC_EXCP_SYSCALL:  /* System call exception                 */
-            cpu_abort(cs, "Syscall exception while in user mode. "
-                      "Aborting\n");
-            break;
-        case POWERPC_EXCP_APU:      /* Auxiliary processor unavailable       */
-            info.si_signo = TARGET_SIGILL;
-            info.si_errno = 0;
-            info.si_code = TARGET_ILL_COPROC;
-            info._sifields._sigfault._addr = env->nip;
-            queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
-            break;
-        case POWERPC_EXCP_DECR:     /* Decrementer exception                 */
-            cpu_abort(cs, "Decrementer interrupt while in user mode. "
-                      "Aborting\n");
-            break;
-        case POWERPC_EXCP_FIT:      /* Fixed-interval timer interrupt        */
-            cpu_abort(cs, "Fix interval timer interrupt while in user mode. "
-                      "Aborting\n");
-            break;
-        case POWERPC_EXCP_WDT:      /* Watchdog timer interrupt              */
-            cpu_abort(cs, "Watchdog timer interrupt while in user mode. "
-                      "Aborting\n");
-            break;
-        case POWERPC_EXCP_DTLB:     /* Data TLB error                        */
-            cpu_abort(cs, "Data TLB exception while in user mode. "
-                      "Aborting\n");
-            break;
-        case POWERPC_EXCP_ITLB:     /* Instruction TLB error                 */
-            cpu_abort(cs, "Instruction TLB exception while in user mode. "
-                      "Aborting\n");
-            break;
-        case POWERPC_EXCP_SPEU:     /* SPE/embedded floating-point unavail.  */
-            info.si_signo = TARGET_SIGILL;
-            info.si_errno = 0;
-            info.si_code = TARGET_ILL_COPROC;
-            info._sifields._sigfault._addr = env->nip;
-            queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
-            break;
-        case POWERPC_EXCP_EFPDI:    /* Embedded floating-point data IRQ      */
-            cpu_abort(cs, "Embedded floating-point data IRQ not handled\n");
-            break;
-        case POWERPC_EXCP_EFPRI:    /* Embedded floating-point round IRQ     */
-            cpu_abort(cs, "Embedded floating-point round IRQ not handled\n");
-            break;
-        case POWERPC_EXCP_EPERFM:   /* Embedded performance monitor IRQ      */
-            cpu_abort(cs, "Performance monitor exception not handled\n");
-            break;
-        case POWERPC_EXCP_DOORI:    /* Embedded doorbell interrupt           */
-            cpu_abort(cs, "Doorbell interrupt while in user mode. "
-                       "Aborting\n");
-            break;
-        case POWERPC_EXCP_DOORCI:   /* Embedded doorbell critical interrupt  */
-            cpu_abort(cs, "Doorbell critical interrupt while in user mode. "
-                      "Aborting\n");
-            break;
-        case POWERPC_EXCP_RESET:    /* System reset exception                */
-            cpu_abort(cs, "Reset interrupt while in user mode. "
-                      "Aborting\n");
-            break;
-        case POWERPC_EXCP_DSEG:     /* Data segment exception                */
-            cpu_abort(cs, "Data segment exception while in user mode. "
-                      "Aborting\n");
-            break;
-        case POWERPC_EXCP_ISEG:     /* Instruction segment exception         */
-            cpu_abort(cs, "Instruction segment exception "
-                      "while in user mode. Aborting\n");
-            break;
-        /* PowerPC 64 with hypervisor mode support */
-        case POWERPC_EXCP_HDECR:    /* Hypervisor decrementer exception      */
-            cpu_abort(cs, "Hypervisor decrementer interrupt "
-                      "while in user mode. Aborting\n");
-            break;
-        case POWERPC_EXCP_TRACE:    /* Trace exception                       */
-            /* Nothing to do:
-             * we use this exception to emulate step-by-step execution mode.
-             */
-            break;
-        /* PowerPC 64 with hypervisor mode support */
-        case POWERPC_EXCP_HDSI:     /* Hypervisor data storage exception     */
-            cpu_abort(cs, "Hypervisor data storage exception "
-                      "while in user mode. Aborting\n");
-            break;
-        case POWERPC_EXCP_HISI:     /* Hypervisor instruction storage excp   */
-            cpu_abort(cs, "Hypervisor instruction storage exception "
-                      "while in user mode. Aborting\n");
-            break;
-        case POWERPC_EXCP_HDSEG:    /* Hypervisor data segment exception     */
-            cpu_abort(cs, "Hypervisor data segment exception "
-                      "while in user mode. Aborting\n");
-            break;
-        case POWERPC_EXCP_HISEG:    /* Hypervisor instruction segment excp   */
-            cpu_abort(cs, "Hypervisor instruction segment exception "
-                      "while in user mode. Aborting\n");
-            break;
-        case POWERPC_EXCP_VPU:      /* Vector unavailable exception          */
-            info.si_signo = TARGET_SIGILL;
-            info.si_errno = 0;
-            info.si_code = TARGET_ILL_COPROC;
-            info._sifields._sigfault._addr = env->nip;
-            queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
-            break;
-        case POWERPC_EXCP_PIT:      /* Programmable interval timer IRQ       */
-            cpu_abort(cs, "Programmable interval timer interrupt "
-                      "while in user mode. Aborting\n");
-            break;
-        case POWERPC_EXCP_IO:       /* IO error exception                    */
-            cpu_abort(cs, "IO error exception while in user mode. "
-                      "Aborting\n");
-            break;
-        case POWERPC_EXCP_RUNM:     /* Run mode exception                    */
-            cpu_abort(cs, "Run mode exception while in user mode. "
-                      "Aborting\n");
-            break;
-        case POWERPC_EXCP_EMUL:     /* Emulation trap exception              */
-            cpu_abort(cs, "Emulation trap exception not handled\n");
-            break;
-        case POWERPC_EXCP_IFTLB:    /* Instruction fetch TLB error           */
-            cpu_abort(cs, "Instruction fetch TLB exception "
-                      "while in user-mode. Aborting");
-            break;
-        case POWERPC_EXCP_DLTLB:    /* Data load TLB miss                    */
-            cpu_abort(cs, "Data load TLB exception while in user-mode. "
-                      "Aborting");
-            break;
-        case POWERPC_EXCP_DSTLB:    /* Data store TLB miss                   */
-            cpu_abort(cs, "Data store TLB exception while in user-mode. "
-                      "Aborting");
-            break;
-        case POWERPC_EXCP_FPA:      /* Floating-point assist exception       */
-            cpu_abort(cs, "Floating-point assist exception not handled\n");
-            break;
-        case POWERPC_EXCP_IABR:     /* Instruction address breakpoint        */
-            cpu_abort(cs, "Instruction address breakpoint exception "
-                      "not handled\n");
-            break;
-        case POWERPC_EXCP_SMI:      /* System management interrupt           */
-            cpu_abort(cs, "System management interrupt while in user mode. "
-                      "Aborting\n");
-            break;
-        case POWERPC_EXCP_THERM:    /* Thermal interrupt                     */
-            cpu_abort(cs, "Thermal interrupt interrupt while in user mode. "
-                      "Aborting\n");
-            break;
-        case POWERPC_EXCP_PERFM:   /* Embedded performance monitor IRQ      */
-            cpu_abort(cs, "Performance monitor exception not handled\n");
-            break;
-        case POWERPC_EXCP_VPUA:     /* Vector assist exception               */
-            cpu_abort(cs, "Vector assist exception not handled\n");
-            break;
-        case POWERPC_EXCP_SOFTP:    /* Soft patch exception                  */
-            cpu_abort(cs, "Soft patch exception not handled\n");
-            break;
-        case POWERPC_EXCP_MAINT:    /* Maintenance exception                 */
-            cpu_abort(cs, "Maintenance exception while in user mode. "
-                      "Aborting\n");
-            break;
-        case POWERPC_EXCP_STOP:     /* stop translation                      */
-            /* We did invalidate the instruction cache. Go on */
-            break;
-        case POWERPC_EXCP_BRANCH:   /* branch instruction:                   */
-            /* We just stopped because of a branch. Go on */
-            break;
-        case POWERPC_EXCP_SYSCALL_USER:
-            /* system call in user-mode emulation */
-            /* WARNING:
-             * PPC ABI uses overflow flag in cr0 to signal an error
-             * in syscalls.
-             */
-            env->crf[0] &= ~0x1;
-            env->nip += 4;
-            ret = do_syscall(env, env->gpr[0], env->gpr[3], env->gpr[4],
-                             env->gpr[5], env->gpr[6], env->gpr[7],
-                             env->gpr[8], 0, 0);
-            if (ret == -TARGET_ERESTARTSYS) {
-                env->nip -= 4;
-                break;
-            }
-            if (ret == (target_ulong)(-TARGET_QEMU_ESIGRETURN)) {
-                /* Returning from a successful sigreturn syscall.
-                   Avoid corrupting register state.  */
-                break;
-            }
-            if (ret > (target_ulong)(-515)) {
-                env->crf[0] |= 0x1;
-                ret = -ret;
-            }
-            env->gpr[3] = ret;
-            break;
-        case POWERPC_EXCP_STCX:
-            if (do_store_exclusive(env)) {
-                info.si_signo = TARGET_SIGSEGV;
-                info.si_errno = 0;
-                info.si_code = TARGET_SEGV_MAPERR;
-                info._sifields._sigfault._addr = env->nip;
-                queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
-            }
-            break;
-        case EXCP_DEBUG:
-            {
-                int sig;
-
-                sig = gdb_handlesig(cs, TARGET_SIGTRAP);
-                if (sig) {
-                    info.si_signo = sig;
-                    info.si_errno = 0;
-                    info.si_code = TARGET_TRAP_BRKPT;
-                    queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
-                  }
-            }
-            break;
-        case EXCP_INTERRUPT:
-            /* just indicate that signals should be handled asap */
-            break;
-        case EXCP_ATOMIC:
-            cpu_exec_step_atomic(cs);
-            break;
-        default:
-            cpu_abort(cs, "Unknown exception 0x%x. Aborting\n", trapnr);
-            break;
-        }
-        process_pending_signals(env);
-    }
-}
-#endif
-
 #ifdef TARGET_MIPS
 
 # ifdef TARGET_ABI_MIPSO32
@@ -3724,24 +3183,7 @@ int main(int argc, char **argv, char **envp)
 
     target_cpu_copy_regs(env, regs);
 
-#if defined(TARGET_PPC)
-    {
-        int i;
-
-#if defined(TARGET_PPC64)
-        int flag = (env->insns_flags2 & PPC2_BOOKE206) ? MSR_CM : MSR_SF;
-#if defined(TARGET_ABI32)
-        env->msr &= ~((target_ulong)1 << flag);
-#else
-        env->msr |= (target_ulong)1 << flag;
-#endif
-#endif
-        env->nip = regs->nip;
-        for(i = 0; i < 32; i++) {
-            env->gpr[i] = regs->gpr[i];
-        }
-    }
-#elif defined(TARGET_M68K)
+#if defined(TARGET_M68K)
     {
         env->pc = regs->pc;
         env->dregs[0] = regs->d0;
diff --git a/linux-user/ppc/cpu_loop.c b/linux-user/ppc/cpu_loop.c
index b7700a5561..2fb516cb00 100644
--- a/linux-user/ppc/cpu_loop.c
+++ b/linux-user/ppc/cpu_loop.c
@@ -21,6 +21,559 @@
 #include "qemu.h"
 #include "cpu_loop-common.h"
 
+static inline uint64_t cpu_ppc_get_tb(CPUPPCState *env)
+{
+    return cpu_get_host_ticks();
+}
+
+uint64_t cpu_ppc_load_tbl(CPUPPCState *env)
+{
+    return cpu_ppc_get_tb(env);
+}
+
+uint32_t cpu_ppc_load_tbu(CPUPPCState *env)
+{
+    return cpu_ppc_get_tb(env) >> 32;
+}
+
+uint64_t cpu_ppc_load_atbl(CPUPPCState *env)
+{
+    return cpu_ppc_get_tb(env);
+}
+
+uint32_t cpu_ppc_load_atbu(CPUPPCState *env)
+{
+    return cpu_ppc_get_tb(env) >> 32;
+}
+
+uint32_t cpu_ppc601_load_rtcu(CPUPPCState *env)
+__attribute__ (( alias ("cpu_ppc_load_tbu") ));
+
+uint32_t cpu_ppc601_load_rtcl(CPUPPCState *env)
+{
+    return cpu_ppc_load_tbl(env) & 0x3FFFFF80;
+}
+
+/* XXX: to be fixed */
+int ppc_dcr_read (ppc_dcr_t *dcr_env, int dcrn, uint32_t *valp)
+{
+    return -1;
+}
+
+int ppc_dcr_write (ppc_dcr_t *dcr_env, int dcrn, uint32_t val)
+{
+    return -1;
+}
+
+static int do_store_exclusive(CPUPPCState *env)
+{
+    target_ulong addr;
+    target_ulong page_addr;
+    target_ulong val, val2 __attribute__((unused)) = 0;
+    int flags;
+    int segv = 0;
+
+    addr = env->reserve_ea;
+    page_addr = addr & TARGET_PAGE_MASK;
+    start_exclusive();
+    mmap_lock();
+    flags = page_get_flags(page_addr);
+    if ((flags & PAGE_READ) == 0) {
+        segv = 1;
+    } else {
+        int reg = env->reserve_info & 0x1f;
+        int size = env->reserve_info >> 5;
+        int stored = 0;
+
+        if (addr == env->reserve_addr) {
+            switch (size) {
+            case 1: segv = get_user_u8(val, addr); break;
+            case 2: segv = get_user_u16(val, addr); break;
+            case 4: segv = get_user_u32(val, addr); break;
+#if defined(TARGET_PPC64)
+            case 8: segv = get_user_u64(val, addr); break;
+            case 16: {
+                segv = get_user_u64(val, addr);
+                if (!segv) {
+                    segv = get_user_u64(val2, addr + 8);
+                }
+                break;
+            }
+#endif
+            default: abort();
+            }
+            if (!segv && val == env->reserve_val) {
+                val = env->gpr[reg];
+                switch (size) {
+                case 1: segv = put_user_u8(val, addr); break;
+                case 2: segv = put_user_u16(val, addr); break;
+                case 4: segv = put_user_u32(val, addr); break;
+#if defined(TARGET_PPC64)
+                case 8: segv = put_user_u64(val, addr); break;
+                case 16: {
+                    if (val2 == env->reserve_val2) {
+                        if (msr_le) {
+                            val2 = val;
+                            val = env->gpr[reg+1];
+                        } else {
+                            val2 = env->gpr[reg+1];
+                        }
+                        segv = put_user_u64(val, addr);
+                        if (!segv) {
+                            segv = put_user_u64(val2, addr + 8);
+                        }
+                    }
+                    break;
+                }
+#endif
+                default: abort();
+                }
+                if (!segv) {
+                    stored = 1;
+                }
+            }
+        }
+        env->crf[0] = (stored << 1) | xer_so;
+        env->reserve_addr = (target_ulong)-1;
+    }
+    if (!segv) {
+        env->nip += 4;
+    }
+    mmap_unlock();
+    end_exclusive();
+    return segv;
+}
+
+void cpu_loop(CPUPPCState *env)
+{
+    CPUState *cs = CPU(ppc_env_get_cpu(env));
+    target_siginfo_t info;
+    int trapnr;
+    target_ulong ret;
+
+    for(;;) {
+        cpu_exec_start(cs);
+        trapnr = cpu_exec(cs);
+        cpu_exec_end(cs);
+        process_queued_cpu_work(cs);
+
+        switch(trapnr) {
+        case POWERPC_EXCP_NONE:
+            /* Just go on */
+            break;
+        case POWERPC_EXCP_CRITICAL: /* Critical input                        */
+            cpu_abort(cs, "Critical interrupt while in user mode. "
+                      "Aborting\n");
+            break;
+        case POWERPC_EXCP_MCHECK:   /* Machine check exception               */
+            cpu_abort(cs, "Machine check exception while in user mode. "
+                      "Aborting\n");
+            break;
+        case POWERPC_EXCP_DSI:      /* Data storage exception                */
+            /* XXX: check this. Seems bugged */
+            switch (env->error_code & 0xFF000000) {
+            case 0x40000000:
+            case 0x42000000:
+                info.si_signo = TARGET_SIGSEGV;
+                info.si_errno = 0;
+                info.si_code = TARGET_SEGV_MAPERR;
+                break;
+            case 0x04000000:
+                info.si_signo = TARGET_SIGILL;
+                info.si_errno = 0;
+                info.si_code = TARGET_ILL_ILLADR;
+                break;
+            case 0x08000000:
+                info.si_signo = TARGET_SIGSEGV;
+                info.si_errno = 0;
+                info.si_code = TARGET_SEGV_ACCERR;
+                break;
+            default:
+                /* Let's send a regular segfault... */
+                EXCP_DUMP(env, "Invalid segfault errno (%02x)\n",
+                          env->error_code);
+                info.si_signo = TARGET_SIGSEGV;
+                info.si_errno = 0;
+                info.si_code = TARGET_SEGV_MAPERR;
+                break;
+            }
+            info._sifields._sigfault._addr = env->spr[SPR_DAR];
+            queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
+            break;
+        case POWERPC_EXCP_ISI:      /* Instruction storage exception         */
+            /* XXX: check this */
+            switch (env->error_code & 0xFF000000) {
+            case 0x40000000:
+                info.si_signo = TARGET_SIGSEGV;
+            info.si_errno = 0;
+                info.si_code = TARGET_SEGV_MAPERR;
+                break;
+            case 0x10000000:
+            case 0x08000000:
+                info.si_signo = TARGET_SIGSEGV;
+                info.si_errno = 0;
+                info.si_code = TARGET_SEGV_ACCERR;
+                break;
+            default:
+                /* Let's send a regular segfault... */
+                EXCP_DUMP(env, "Invalid segfault errno (%02x)\n",
+                          env->error_code);
+                info.si_signo = TARGET_SIGSEGV;
+                info.si_errno = 0;
+                info.si_code = TARGET_SEGV_MAPERR;
+                break;
+            }
+            info._sifields._sigfault._addr = env->nip - 4;
+            queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
+            break;
+        case POWERPC_EXCP_EXTERNAL: /* External input                        */
+            cpu_abort(cs, "External interrupt while in user mode. "
+                      "Aborting\n");
+            break;
+        case POWERPC_EXCP_ALIGN:    /* Alignment exception                   */
+            /* XXX: check this */
+            info.si_signo = TARGET_SIGBUS;
+            info.si_errno = 0;
+            info.si_code = TARGET_BUS_ADRALN;
+            info._sifields._sigfault._addr = env->nip;
+            queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
+            break;
+        case POWERPC_EXCP_PROGRAM:  /* Program exception                     */
+        case POWERPC_EXCP_HV_EMU:   /* HV emulation                          */
+            /* XXX: check this */
+            switch (env->error_code & ~0xF) {
+            case POWERPC_EXCP_FP:
+                info.si_signo = TARGET_SIGFPE;
+                info.si_errno = 0;
+                switch (env->error_code & 0xF) {
+                case POWERPC_EXCP_FP_OX:
+                    info.si_code = TARGET_FPE_FLTOVF;
+                    break;
+                case POWERPC_EXCP_FP_UX:
+                    info.si_code = TARGET_FPE_FLTUND;
+                    break;
+                case POWERPC_EXCP_FP_ZX:
+                case POWERPC_EXCP_FP_VXZDZ:
+                    info.si_code = TARGET_FPE_FLTDIV;
+                    break;
+                case POWERPC_EXCP_FP_XX:
+                    info.si_code = TARGET_FPE_FLTRES;
+                    break;
+                case POWERPC_EXCP_FP_VXSOFT:
+                    info.si_code = TARGET_FPE_FLTINV;
+                    break;
+                case POWERPC_EXCP_FP_VXSNAN:
+                case POWERPC_EXCP_FP_VXISI:
+                case POWERPC_EXCP_FP_VXIDI:
+                case POWERPC_EXCP_FP_VXIMZ:
+                case POWERPC_EXCP_FP_VXVC:
+                case POWERPC_EXCP_FP_VXSQRT:
+                case POWERPC_EXCP_FP_VXCVI:
+                    info.si_code = TARGET_FPE_FLTSUB;
+                    break;
+                default:
+                    EXCP_DUMP(env, "Unknown floating point exception (%02x)\n",
+                              env->error_code);
+                    break;
+                }
+                break;
+            case POWERPC_EXCP_INVAL:
+                info.si_signo = TARGET_SIGILL;
+                info.si_errno = 0;
+                switch (env->error_code & 0xF) {
+                case POWERPC_EXCP_INVAL_INVAL:
+                    info.si_code = TARGET_ILL_ILLOPC;
+                    break;
+                case POWERPC_EXCP_INVAL_LSWX:
+                    info.si_code = TARGET_ILL_ILLOPN;
+                    break;
+                case POWERPC_EXCP_INVAL_SPR:
+                    info.si_code = TARGET_ILL_PRVREG;
+                    break;
+                case POWERPC_EXCP_INVAL_FP:
+                    info.si_code = TARGET_ILL_COPROC;
+                    break;
+                default:
+                    EXCP_DUMP(env, "Unknown invalid operation (%02x)\n",
+                              env->error_code & 0xF);
+                    info.si_code = TARGET_ILL_ILLADR;
+                    break;
+                }
+                break;
+            case POWERPC_EXCP_PRIV:
+                info.si_signo = TARGET_SIGILL;
+                info.si_errno = 0;
+                switch (env->error_code & 0xF) {
+                case POWERPC_EXCP_PRIV_OPC:
+                    info.si_code = TARGET_ILL_PRVOPC;
+                    break;
+                case POWERPC_EXCP_PRIV_REG:
+                    info.si_code = TARGET_ILL_PRVREG;
+                    break;
+                default:
+                    EXCP_DUMP(env, "Unknown privilege violation (%02x)\n",
+                              env->error_code & 0xF);
+                    info.si_code = TARGET_ILL_PRVOPC;
+                    break;
+                }
+                break;
+            case POWERPC_EXCP_TRAP:
+                cpu_abort(cs, "Tried to call a TRAP\n");
+                break;
+            default:
+                /* Should not happen ! */
+                cpu_abort(cs, "Unknown program exception (%02x)\n",
+                          env->error_code);
+                break;
+            }
+            info._sifields._sigfault._addr = env->nip;
+            queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
+            break;
+        case POWERPC_EXCP_FPU:      /* Floating-point unavailable exception  */
+            info.si_signo = TARGET_SIGILL;
+            info.si_errno = 0;
+            info.si_code = TARGET_ILL_COPROC;
+            info._sifields._sigfault._addr = env->nip;
+            queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
+            break;
+        case POWERPC_EXCP_SYSCALL:  /* System call exception                 */
+            cpu_abort(cs, "Syscall exception while in user mode. "
+                      "Aborting\n");
+            break;
+        case POWERPC_EXCP_APU:      /* Auxiliary processor unavailable       */
+            info.si_signo = TARGET_SIGILL;
+            info.si_errno = 0;
+            info.si_code = TARGET_ILL_COPROC;
+            info._sifields._sigfault._addr = env->nip;
+            queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
+            break;
+        case POWERPC_EXCP_DECR:     /* Decrementer exception                 */
+            cpu_abort(cs, "Decrementer interrupt while in user mode. "
+                      "Aborting\n");
+            break;
+        case POWERPC_EXCP_FIT:      /* Fixed-interval timer interrupt        */
+            cpu_abort(cs, "Fix interval timer interrupt while in user mode. "
+                      "Aborting\n");
+            break;
+        case POWERPC_EXCP_WDT:      /* Watchdog timer interrupt              */
+            cpu_abort(cs, "Watchdog timer interrupt while in user mode. "
+                      "Aborting\n");
+            break;
+        case POWERPC_EXCP_DTLB:     /* Data TLB error                        */
+            cpu_abort(cs, "Data TLB exception while in user mode. "
+                      "Aborting\n");
+            break;
+        case POWERPC_EXCP_ITLB:     /* Instruction TLB error                 */
+            cpu_abort(cs, "Instruction TLB exception while in user mode. "
+                      "Aborting\n");
+            break;
+        case POWERPC_EXCP_SPEU:     /* SPE/embedded floating-point unavail.  */
+            info.si_signo = TARGET_SIGILL;
+            info.si_errno = 0;
+            info.si_code = TARGET_ILL_COPROC;
+            info._sifields._sigfault._addr = env->nip;
+            queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
+            break;
+        case POWERPC_EXCP_EFPDI:    /* Embedded floating-point data IRQ      */
+            cpu_abort(cs, "Embedded floating-point data IRQ not handled\n");
+            break;
+        case POWERPC_EXCP_EFPRI:    /* Embedded floating-point round IRQ     */
+            cpu_abort(cs, "Embedded floating-point round IRQ not handled\n");
+            break;
+        case POWERPC_EXCP_EPERFM:   /* Embedded performance monitor IRQ      */
+            cpu_abort(cs, "Performance monitor exception not handled\n");
+            break;
+        case POWERPC_EXCP_DOORI:    /* Embedded doorbell interrupt           */
+            cpu_abort(cs, "Doorbell interrupt while in user mode. "
+                       "Aborting\n");
+            break;
+        case POWERPC_EXCP_DOORCI:   /* Embedded doorbell critical interrupt  */
+            cpu_abort(cs, "Doorbell critical interrupt while in user mode. "
+                      "Aborting\n");
+            break;
+        case POWERPC_EXCP_RESET:    /* System reset exception                */
+            cpu_abort(cs, "Reset interrupt while in user mode. "
+                      "Aborting\n");
+            break;
+        case POWERPC_EXCP_DSEG:     /* Data segment exception                */
+            cpu_abort(cs, "Data segment exception while in user mode. "
+                      "Aborting\n");
+            break;
+        case POWERPC_EXCP_ISEG:     /* Instruction segment exception         */
+            cpu_abort(cs, "Instruction segment exception "
+                      "while in user mode. Aborting\n");
+            break;
+        /* PowerPC 64 with hypervisor mode support */
+        case POWERPC_EXCP_HDECR:    /* Hypervisor decrementer exception      */
+            cpu_abort(cs, "Hypervisor decrementer interrupt "
+                      "while in user mode. Aborting\n");
+            break;
+        case POWERPC_EXCP_TRACE:    /* Trace exception                       */
+            /* Nothing to do:
+             * we use this exception to emulate step-by-step execution mode.
+             */
+            break;
+        /* PowerPC 64 with hypervisor mode support */
+        case POWERPC_EXCP_HDSI:     /* Hypervisor data storage exception     */
+            cpu_abort(cs, "Hypervisor data storage exception "
+                      "while in user mode. Aborting\n");
+            break;
+        case POWERPC_EXCP_HISI:     /* Hypervisor instruction storage excp   */
+            cpu_abort(cs, "Hypervisor instruction storage exception "
+                      "while in user mode. Aborting\n");
+            break;
+        case POWERPC_EXCP_HDSEG:    /* Hypervisor data segment exception     */
+            cpu_abort(cs, "Hypervisor data segment exception "
+                      "while in user mode. Aborting\n");
+            break;
+        case POWERPC_EXCP_HISEG:    /* Hypervisor instruction segment excp   */
+            cpu_abort(cs, "Hypervisor instruction segment exception "
+                      "while in user mode. Aborting\n");
+            break;
+        case POWERPC_EXCP_VPU:      /* Vector unavailable exception          */
+            info.si_signo = TARGET_SIGILL;
+            info.si_errno = 0;
+            info.si_code = TARGET_ILL_COPROC;
+            info._sifields._sigfault._addr = env->nip;
+            queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
+            break;
+        case POWERPC_EXCP_PIT:      /* Programmable interval timer IRQ       */
+            cpu_abort(cs, "Programmable interval timer interrupt "
+                      "while in user mode. Aborting\n");
+            break;
+        case POWERPC_EXCP_IO:       /* IO error exception                    */
+            cpu_abort(cs, "IO error exception while in user mode. "
+                      "Aborting\n");
+            break;
+        case POWERPC_EXCP_RUNM:     /* Run mode exception                    */
+            cpu_abort(cs, "Run mode exception while in user mode. "
+                      "Aborting\n");
+            break;
+        case POWERPC_EXCP_EMUL:     /* Emulation trap exception              */
+            cpu_abort(cs, "Emulation trap exception not handled\n");
+            break;
+        case POWERPC_EXCP_IFTLB:    /* Instruction fetch TLB error           */
+            cpu_abort(cs, "Instruction fetch TLB exception "
+                      "while in user-mode. Aborting");
+            break;
+        case POWERPC_EXCP_DLTLB:    /* Data load TLB miss                    */
+            cpu_abort(cs, "Data load TLB exception while in user-mode. "
+                      "Aborting");
+            break;
+        case POWERPC_EXCP_DSTLB:    /* Data store TLB miss                   */
+            cpu_abort(cs, "Data store TLB exception while in user-mode. "
+                      "Aborting");
+            break;
+        case POWERPC_EXCP_FPA:      /* Floating-point assist exception       */
+            cpu_abort(cs, "Floating-point assist exception not handled\n");
+            break;
+        case POWERPC_EXCP_IABR:     /* Instruction address breakpoint        */
+            cpu_abort(cs, "Instruction address breakpoint exception "
+                      "not handled\n");
+            break;
+        case POWERPC_EXCP_SMI:      /* System management interrupt           */
+            cpu_abort(cs, "System management interrupt while in user mode. "
+                      "Aborting\n");
+            break;
+        case POWERPC_EXCP_THERM:    /* Thermal interrupt                     */
+            cpu_abort(cs, "Thermal interrupt interrupt while in user mode. "
+                      "Aborting\n");
+            break;
+        case POWERPC_EXCP_PERFM:   /* Embedded performance monitor IRQ      */
+            cpu_abort(cs, "Performance monitor exception not handled\n");
+            break;
+        case POWERPC_EXCP_VPUA:     /* Vector assist exception               */
+            cpu_abort(cs, "Vector assist exception not handled\n");
+            break;
+        case POWERPC_EXCP_SOFTP:    /* Soft patch exception                  */
+            cpu_abort(cs, "Soft patch exception not handled\n");
+            break;
+        case POWERPC_EXCP_MAINT:    /* Maintenance exception                 */
+            cpu_abort(cs, "Maintenance exception while in user mode. "
+                      "Aborting\n");
+            break;
+        case POWERPC_EXCP_STOP:     /* stop translation                      */
+            /* We did invalidate the instruction cache. Go on */
+            break;
+        case POWERPC_EXCP_BRANCH:   /* branch instruction:                   */
+            /* We just stopped because of a branch. Go on */
+            break;
+        case POWERPC_EXCP_SYSCALL_USER:
+            /* system call in user-mode emulation */
+            /* WARNING:
+             * PPC ABI uses overflow flag in cr0 to signal an error
+             * in syscalls.
+             */
+            env->crf[0] &= ~0x1;
+            env->nip += 4;
+            ret = do_syscall(env, env->gpr[0], env->gpr[3], env->gpr[4],
+                             env->gpr[5], env->gpr[6], env->gpr[7],
+                             env->gpr[8], 0, 0);
+            if (ret == -TARGET_ERESTARTSYS) {
+                env->nip -= 4;
+                break;
+            }
+            if (ret == (target_ulong)(-TARGET_QEMU_ESIGRETURN)) {
+                /* Returning from a successful sigreturn syscall.
+                   Avoid corrupting register state.  */
+                break;
+            }
+            if (ret > (target_ulong)(-515)) {
+                env->crf[0] |= 0x1;
+                ret = -ret;
+            }
+            env->gpr[3] = ret;
+            break;
+        case POWERPC_EXCP_STCX:
+            if (do_store_exclusive(env)) {
+                info.si_signo = TARGET_SIGSEGV;
+                info.si_errno = 0;
+                info.si_code = TARGET_SEGV_MAPERR;
+                info._sifields._sigfault._addr = env->nip;
+                queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
+            }
+            break;
+        case EXCP_DEBUG:
+            {
+                int sig;
+
+                sig = gdb_handlesig(cs, TARGET_SIGTRAP);
+                if (sig) {
+                    info.si_signo = sig;
+                    info.si_errno = 0;
+                    info.si_code = TARGET_TRAP_BRKPT;
+                    queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
+                  }
+            }
+            break;
+        case EXCP_INTERRUPT:
+            /* just indicate that signals should be handled asap */
+            break;
+        case EXCP_ATOMIC:
+            cpu_exec_step_atomic(cs);
+            break;
+        default:
+            cpu_abort(cs, "Unknown exception 0x%x. Aborting\n", trapnr);
+            break;
+        }
+        process_pending_signals(env);
+    }
+}
+
 void target_cpu_copy_regs(CPUArchState *env, struct target_pt_regs *regs)
 {
+    int i;
+
+#if defined(TARGET_PPC64)
+    int flag = (env->insns_flags2 & PPC2_BOOKE206) ? MSR_CM : MSR_SF;
+#if defined(TARGET_ABI32)
+    env->msr &= ~((target_ulong)1 << flag);
+#else
+    env->msr |= (target_ulong)1 << flag;
+#endif
+#endif
+    env->nip = regs->nip;
+    for(i = 0; i < 32; i++) {
+        env->gpr[i] = regs->gpr[i];
+    }
 }
-- 
2.14.3